2 * class.c: Class management for the Mono runtime
5 * Miguel de Icaza (miguel@ximian.com)
7 * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
8 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
9 * Copyright 2012 Xamarin Inc (http://www.xamarin.com)
19 #include <mono/metadata/image.h>
20 #include <mono/metadata/assembly.h>
21 #include <mono/metadata/metadata.h>
22 #include <mono/metadata/metadata-internals.h>
23 #include <mono/metadata/profiler-private.h>
24 #include <mono/metadata/tabledefs.h>
25 #include <mono/metadata/tokentype.h>
26 #include <mono/metadata/class-internals.h>
27 #include <mono/metadata/object.h>
28 #include <mono/metadata/appdomain.h>
29 #include <mono/metadata/mono-endian.h>
30 #include <mono/metadata/debug-helpers.h>
31 #include <mono/metadata/reflection.h>
32 #include <mono/metadata/exception.h>
33 #include <mono/metadata/security-manager.h>
34 #include <mono/metadata/security-core-clr.h>
35 #include <mono/metadata/attrdefs.h>
36 #include <mono/metadata/gc-internals.h>
37 #include <mono/metadata/verify-internals.h>
38 #include <mono/metadata/mono-debug.h>
39 #include <mono/utils/mono-counters.h>
40 #include <mono/utils/mono-string.h>
41 #include <mono/utils/mono-error-internals.h>
42 #include <mono/utils/mono-logger-internals.h>
43 #include <mono/utils/mono-memory-model.h>
44 #include <mono/utils/atomic.h>
45 #include <mono/utils/bsearch.h>
46 #include <mono/utils/checked-build.h>
50 gboolean mono_print_vtable = FALSE;
51 gboolean mono_align_small_structs = FALSE;
54 guint32 inflated_classes, inflated_classes_size, inflated_methods_size;
55 guint32 classes_size, class_ext_size;
57 /* Low level lock which protects data structures in this module */
58 static mono_mutex_t classes_mutex;
60 /* Function supplied by the runtime to find classes by name using information from the AOT file */
61 static MonoGetClassFromName get_class_from_name = NULL;
63 static MonoClass * mono_class_create_from_typedef (MonoImage *image, guint32 type_token, MonoError *error);
64 static gboolean mono_class_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res);
65 static gboolean can_access_type (MonoClass *access_klass, MonoClass *member_klass);
66 static MonoMethod* find_method_in_metadata (MonoClass *klass, const char *name, int param_count, int flags);
67 static int generic_array_methods (MonoClass *klass);
68 static void setup_generic_array_ifaces (MonoClass *klass, MonoClass *iface, MonoMethod **methods, int pos);
70 static MonoMethod* mono_class_get_virtual_methods (MonoClass* klass, gpointer *iter);
71 static char* mono_assembly_name_from_token (MonoImage *image, guint32 type_token);
72 static void mono_field_resolve_type (MonoClassField *field, MonoError *error);
73 static guint32 mono_field_resolve_flags (MonoClassField *field);
74 static void mono_class_setup_vtable_full (MonoClass *klass, GList *in_setup);
75 static void mono_generic_class_setup_parent (MonoClass *klass, MonoClass *gklass);
78 We use gclass recording to allow recursive system f types to be referenced by a parent.
80 Given the following type hierarchy:
82 class TextBox : TextBoxBase<TextBox> {}
83 class TextBoxBase<T> : TextInput<TextBox> where T : TextBoxBase<T> {}
84 class TextInput<T> : Input<T> where T: TextInput<T> {}
87 The runtime tries to load TextBoxBase<>.
88 To load TextBoxBase<> to do so it must resolve the parent which is TextInput<TextBox>.
89 To instantiate TextInput<TextBox> it must resolve TextInput<> and TextBox.
90 To load TextBox it must resolve the parent which is TextBoxBase<TextBox>.
92 At this point the runtime must instantiate TextBoxBase<TextBox>. Both types are partially loaded
93 at this point, iow, both are registered in the type map and both and a NULL parent. This means
94 that the resulting generic instance will have a NULL parent, which is wrong and will cause breakage.
96 To fix that what we do is to record all generic instantes created while resolving the parent of
97 any generic type definition and, after resolved, correct the parent field if needed.
100 static int record_gclass_instantiation;
101 static GSList *gclass_recorded_list;
102 typedef gboolean (*gclass_record_func) (MonoClass*, void*);
107 mono_locks_os_acquire (&classes_mutex, ClassesLock);
111 classes_unlock (void)
113 mono_locks_os_release (&classes_mutex, ClassesLock);
117 * LOCKING: loader lock must be held until pairing disable_gclass_recording is called.
120 enable_gclass_recording (void)
122 ++record_gclass_instantiation;
126 * LOCKING: loader lock must be held since pairing enable_gclass_recording was called.
129 disable_gclass_recording (gclass_record_func func, void *user_data)
131 GSList **head = &gclass_recorded_list;
133 g_assert (record_gclass_instantiation > 0);
134 --record_gclass_instantiation;
137 GSList *node = *head;
138 if (func ((MonoClass*)node->data, user_data)) {
140 g_slist_free_1 (node);
146 /* We automatically discard all recorded gclasses when disabled. */
147 if (!record_gclass_instantiation && gclass_recorded_list) {
148 g_slist_free (gclass_recorded_list);
149 gclass_recorded_list = NULL;
154 * mono_class_from_typeref:
155 * @image: a MonoImage
156 * @type_token: a TypeRef token
158 * Creates the MonoClass* structure representing the type defined by
159 * the typeref token valid inside @image.
160 * Returns: The MonoClass* representing the typeref token, NULL ifcould
164 mono_class_from_typeref (MonoImage *image, guint32 type_token)
167 MonoClass *klass = mono_class_from_typeref_checked (image, type_token, &error);
168 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
173 * mono_class_from_typeref_checked:
174 * @image: a MonoImage
175 * @type_token: a TypeRef token
176 * @error: error return code, if any.
178 * Creates the MonoClass* structure representing the type defined by
179 * the typeref token valid inside @image.
181 * Returns: The MonoClass* representing the typeref token, NULL if it could
182 * not be loaded with the @error value filled with the information about the
186 mono_class_from_typeref_checked (MonoImage *image, guint32 type_token, MonoError *error)
188 guint32 cols [MONO_TYPEREF_SIZE];
189 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEREF];
191 const char *name, *nspace;
192 MonoClass *res = NULL;
195 mono_error_init (error);
197 if (!mono_verifier_verify_typeref_row (image, (type_token & 0xffffff) - 1, error))
200 mono_metadata_decode_row (t, (type_token&0xffffff)-1, cols, MONO_TYPEREF_SIZE);
202 name = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAME]);
203 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAMESPACE]);
205 idx = cols [MONO_TYPEREF_SCOPE] >> MONO_RESOLUTION_SCOPE_BITS;
206 switch (cols [MONO_TYPEREF_SCOPE] & MONO_RESOLUTION_SCOPE_MASK) {
207 case MONO_RESOLUTION_SCOPE_MODULE:
209 LAMESPEC The spec says that a null module resolution scope should go through the exported type table.
210 This is not the observed behavior of existing implementations.
211 The defacto behavior is that it's just a typedef in disguise.
213 /* a typedef in disguise */
214 res = mono_class_from_name_checked (image, nspace, name, error);
217 case MONO_RESOLUTION_SCOPE_MODULEREF:
218 module = mono_image_load_module (image, idx);
220 res = mono_class_from_name_checked (module, nspace, name, error);
223 case MONO_RESOLUTION_SCOPE_TYPEREF: {
224 MonoClass *enclosing;
227 if (idx == mono_metadata_token_index (type_token)) {
228 mono_error_set_bad_image (error, image, "Image with self-referencing typeref token %08x.", type_token);
232 enclosing = mono_class_from_typeref_checked (image, MONO_TOKEN_TYPE_REF | idx, error);
233 return_val_if_nok (error, NULL);
235 if (enclosing->nested_classes_inited && enclosing->ext) {
236 /* Micro-optimization: don't scan the metadata tables if enclosing is already inited */
237 for (tmp = enclosing->ext->nested_classes; tmp; tmp = tmp->next) {
238 res = (MonoClass *)tmp->data;
239 if (strcmp (res->name, name) == 0)
243 /* Don't call mono_class_init as we might've been called by it recursively */
244 int i = mono_metadata_nesting_typedef (enclosing->image, enclosing->type_token, 1);
246 guint32 class_nested = mono_metadata_decode_row_col (&enclosing->image->tables [MONO_TABLE_NESTEDCLASS], i - 1, MONO_NESTED_CLASS_NESTED);
247 guint32 string_offset = mono_metadata_decode_row_col (&enclosing->image->tables [MONO_TABLE_TYPEDEF], class_nested - 1, MONO_TYPEDEF_NAME);
248 const char *nname = mono_metadata_string_heap (enclosing->image, string_offset);
250 if (strcmp (nname, name) == 0)
251 return mono_class_create_from_typedef (enclosing->image, MONO_TOKEN_TYPE_DEF | class_nested, error);
253 i = mono_metadata_nesting_typedef (enclosing->image, enclosing->type_token, i + 1);
256 g_warning ("TypeRef ResolutionScope not yet handled (%d) for %s.%s in image %s", idx, nspace, name, image->name);
259 case MONO_RESOLUTION_SCOPE_ASSEMBLYREF:
263 if (idx > image->tables [MONO_TABLE_ASSEMBLYREF].rows) {
264 mono_error_set_bad_image (error, image, "Image with invalid assemblyref token %08x.", idx);
268 if (!image->references || !image->references [idx - 1])
269 mono_assembly_load_reference (image, idx - 1);
270 g_assert (image->references [idx - 1]);
272 /* If the assembly did not load, register this as a type load exception */
273 if (image->references [idx - 1] == REFERENCE_MISSING){
274 MonoAssemblyName aname;
277 mono_assembly_get_assemblyref (image, idx - 1, &aname);
278 human_name = mono_stringify_assembly_name (&aname);
279 mono_error_set_assembly_load_simple (error, human_name, image->assembly ? image->assembly->ref_only : FALSE);
283 res = mono_class_from_name_checked (image->references [idx - 1]->image, nspace, name, error);
286 /* Generic case, should be avoided for when a better error is possible. */
287 if (!res && mono_error_ok (error)) {
288 if (mono_loader_get_last_error ()) { /*FIXME plug the above to not leak errors*/
289 mono_error_set_from_loader_error (error);
291 char *name = mono_class_name_from_token (image, type_token);
292 char *assembly = mono_assembly_name_from_token (image, type_token);
293 mono_error_set_type_load_name (error, name, assembly, "Could not resolve type with token %08x", type_token);
296 mono_loader_assert_no_error ();
302 mono_image_memdup (MonoImage *image, void *data, guint size)
304 void *res = mono_image_alloc (image, size);
305 memcpy (res, data, size);
309 /* Copy everything mono_metadata_free_array free. */
311 mono_dup_array_type (MonoImage *image, MonoArrayType *a)
314 a = (MonoArrayType *)mono_image_memdup (image, a, sizeof (MonoArrayType));
316 a->sizes = (int *)mono_image_memdup (image, a->sizes, a->numsizes * sizeof (int));
318 a->lobounds = (int *)mono_image_memdup (image, a->lobounds, a->numlobounds * sizeof (int));
320 a = (MonoArrayType *)g_memdup (a, sizeof (MonoArrayType));
322 a->sizes = (int *)g_memdup (a->sizes, a->numsizes * sizeof (int));
324 a->lobounds = (int *)g_memdup (a->lobounds, a->numlobounds * sizeof (int));
329 /* Copy everything mono_metadata_free_method_signature free. */
331 mono_metadata_signature_deep_dup (MonoImage *image, MonoMethodSignature *sig)
335 sig = mono_metadata_signature_dup_full (image, sig);
337 sig->ret = mono_metadata_type_dup (image, sig->ret);
338 for (i = 0; i < sig->param_count; ++i)
339 sig->params [i] = mono_metadata_type_dup (image, sig->params [i]);
345 _mono_type_get_assembly_name (MonoClass *klass, GString *str)
347 MonoAssembly *ta = klass->image->assembly;
350 name = mono_stringify_assembly_name (&ta->aname);
351 g_string_append_printf (str, ", %s", name);
356 mono_type_name_check_byref (MonoType *type, GString *str)
359 g_string_append_c (str, '&');
363 * mono_identifier_escape_type_name_chars:
364 * @str: a destination string
365 * @identifier: an IDENTIFIER in internal form
369 * The displayed form of the identifier is appended to str.
371 * The displayed form of an identifier has the characters ,+&*[]\
372 * that have special meaning in type names escaped with a preceeding
373 * backslash (\) character.
376 mono_identifier_escape_type_name_chars (GString* str, const char* identifier)
382 // reserve space for common case: there will be no escaped characters.
383 g_string_set_size(str, n + strlen(identifier));
384 g_string_set_size(str, n);
386 for (const char* s = identifier; *s != 0 ; s++) {
395 g_string_append_c (str, '\\');
396 g_string_append_c (str, *s);
399 g_string_append_c (str, *s);
407 mono_type_get_name_recurse (MonoType *type, GString *str, gboolean is_recursed,
408 MonoTypeNameFormat format)
412 switch (type->type) {
413 case MONO_TYPE_ARRAY: {
414 int i, rank = type->data.array->rank;
415 MonoTypeNameFormat nested_format;
417 nested_format = format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED ?
418 MONO_TYPE_NAME_FORMAT_FULL_NAME : format;
420 mono_type_get_name_recurse (
421 &type->data.array->eklass->byval_arg, str, FALSE, nested_format);
422 g_string_append_c (str, '[');
424 g_string_append_c (str, '*');
425 for (i = 1; i < rank; i++)
426 g_string_append_c (str, ',');
427 g_string_append_c (str, ']');
429 mono_type_name_check_byref (type, str);
431 if (format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED)
432 _mono_type_get_assembly_name (type->data.array->eklass, str);
435 case MONO_TYPE_SZARRAY: {
436 MonoTypeNameFormat nested_format;
438 nested_format = format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED ?
439 MONO_TYPE_NAME_FORMAT_FULL_NAME : format;
441 mono_type_get_name_recurse (
442 &type->data.klass->byval_arg, str, FALSE, nested_format);
443 g_string_append (str, "[]");
445 mono_type_name_check_byref (type, str);
447 if (format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED)
448 _mono_type_get_assembly_name (type->data.klass, str);
451 case MONO_TYPE_PTR: {
452 MonoTypeNameFormat nested_format;
454 nested_format = format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED ?
455 MONO_TYPE_NAME_FORMAT_FULL_NAME : format;
457 mono_type_get_name_recurse (
458 type->data.type, str, FALSE, nested_format);
459 g_string_append_c (str, '*');
461 mono_type_name_check_byref (type, str);
463 if (format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED)
464 _mono_type_get_assembly_name (mono_class_from_mono_type (type->data.type), str);
469 if (!mono_generic_param_info (type->data.generic_param))
470 g_string_append_printf (str, "%s%d", type->type == MONO_TYPE_VAR ? "!" : "!!", type->data.generic_param->num);
472 g_string_append (str, mono_generic_param_info (type->data.generic_param)->name);
474 mono_type_name_check_byref (type, str);
478 klass = mono_class_from_mono_type (type);
479 if (klass->nested_in) {
480 mono_type_get_name_recurse (
481 &klass->nested_in->byval_arg, str, TRUE, format);
482 if (format == MONO_TYPE_NAME_FORMAT_IL)
483 g_string_append_c (str, '.');
485 g_string_append_c (str, '+');
486 } else if (*klass->name_space) {
487 if (format == MONO_TYPE_NAME_FORMAT_IL)
488 g_string_append (str, klass->name_space);
490 mono_identifier_escape_type_name_chars (str, klass->name_space);
491 g_string_append_c (str, '.');
493 if (format == MONO_TYPE_NAME_FORMAT_IL) {
494 char *s = strchr (klass->name, '`');
495 int len = s ? s - klass->name : strlen (klass->name);
496 g_string_append_len (str, klass->name, len);
498 mono_identifier_escape_type_name_chars (str, klass->name);
502 if (klass->generic_class) {
503 MonoGenericClass *gclass = klass->generic_class;
504 MonoGenericInst *inst = gclass->context.class_inst;
505 MonoTypeNameFormat nested_format;
508 nested_format = format == MONO_TYPE_NAME_FORMAT_FULL_NAME ?
509 MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED : format;
511 if (format == MONO_TYPE_NAME_FORMAT_IL)
512 g_string_append_c (str, '<');
514 g_string_append_c (str, '[');
515 for (i = 0; i < inst->type_argc; i++) {
516 MonoType *t = inst->type_argv [i];
519 g_string_append_c (str, ',');
520 if ((nested_format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED) &&
521 (t->type != MONO_TYPE_VAR) && (type->type != MONO_TYPE_MVAR))
522 g_string_append_c (str, '[');
523 mono_type_get_name_recurse (inst->type_argv [i], str, FALSE, nested_format);
524 if ((nested_format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED) &&
525 (t->type != MONO_TYPE_VAR) && (type->type != MONO_TYPE_MVAR))
526 g_string_append_c (str, ']');
528 if (format == MONO_TYPE_NAME_FORMAT_IL)
529 g_string_append_c (str, '>');
531 g_string_append_c (str, ']');
532 } else if (klass->generic_container &&
533 (format != MONO_TYPE_NAME_FORMAT_FULL_NAME) &&
534 (format != MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED)) {
537 if (format == MONO_TYPE_NAME_FORMAT_IL)
538 g_string_append_c (str, '<');
540 g_string_append_c (str, '[');
541 for (i = 0; i < klass->generic_container->type_argc; i++) {
543 g_string_append_c (str, ',');
544 g_string_append (str, mono_generic_container_get_param_info (klass->generic_container, i)->name);
546 if (format == MONO_TYPE_NAME_FORMAT_IL)
547 g_string_append_c (str, '>');
549 g_string_append_c (str, ']');
552 mono_type_name_check_byref (type, str);
554 if ((format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED) &&
555 (type->type != MONO_TYPE_VAR) && (type->type != MONO_TYPE_MVAR))
556 _mono_type_get_assembly_name (klass, str);
562 * mono_type_get_name_full:
564 * @format: the format for the return string.
567 * Returns: The string representation in a number of formats:
569 * if format is MONO_TYPE_NAME_FORMAT_REFLECTION, the return string is
570 * returned in the formatrequired by System.Reflection, this is the
571 * inverse of mono_reflection_parse_type ().
573 * if format is MONO_TYPE_NAME_FORMAT_IL, it returns a syntax that can
574 * be used by the IL assembler.
576 * if format is MONO_TYPE_NAME_FORMAT_FULL_NAME
578 * if format is MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED
581 mono_type_get_name_full (MonoType *type, MonoTypeNameFormat format)
585 result = g_string_new ("");
587 mono_type_get_name_recurse (type, result, FALSE, format);
589 return g_string_free (result, FALSE);
593 * mono_type_get_full_name:
596 * Returns: The string representation for type as required by System.Reflection.
597 * The inverse of mono_reflection_parse_type ().
600 mono_type_get_full_name (MonoClass *klass)
602 return mono_type_get_name_full (mono_class_get_type (klass), MONO_TYPE_NAME_FORMAT_REFLECTION);
606 * mono_type_get_name:
609 * Returns: The string representation for type as it would be represented in IL code.
612 mono_type_get_name (MonoType *type)
614 return mono_type_get_name_full (type, MONO_TYPE_NAME_FORMAT_IL);
618 * mono_type_get_underlying_type:
621 * Returns: The MonoType for the underlying integer type if @type
622 * is an enum and byref is false, otherwise the type itself.
625 mono_type_get_underlying_type (MonoType *type)
627 if (type->type == MONO_TYPE_VALUETYPE && type->data.klass->enumtype && !type->byref)
628 return mono_class_enum_basetype (type->data.klass);
629 if (type->type == MONO_TYPE_GENERICINST && type->data.generic_class->container_class->enumtype && !type->byref)
630 return mono_class_enum_basetype (type->data.generic_class->container_class);
635 * mono_class_is_open_constructed_type:
638 * Returns: TRUE if type represents a generics open constructed type.
639 * IOW, not all type parameters required for the instantiation have
640 * been provided or it's a generic type definition.
642 * An open constructed type means it's a non realizable type. Not to
643 * be mixed up with an abstract type - we can't cast or dispatch to
644 * an open type, for example.
647 mono_class_is_open_constructed_type (MonoType *t)
653 case MONO_TYPE_SZARRAY:
654 return mono_class_is_open_constructed_type (&t->data.klass->byval_arg);
655 case MONO_TYPE_ARRAY:
656 return mono_class_is_open_constructed_type (&t->data.array->eklass->byval_arg);
658 return mono_class_is_open_constructed_type (t->data.type);
659 case MONO_TYPE_GENERICINST:
660 return t->data.generic_class->context.class_inst->is_open;
661 case MONO_TYPE_CLASS:
662 case MONO_TYPE_VALUETYPE:
663 return t->data.klass->generic_container != NULL;
670 This is a simple function to catch the most common bad instances of generic types.
671 Specially those that might lead to further failures in the runtime.
674 is_valid_generic_argument (MonoType *type)
676 switch (type->type) {
678 //case MONO_TYPE_TYPEDBYREF:
686 inflate_generic_type (MonoImage *image, MonoType *type, MonoGenericContext *context, MonoError *error)
688 mono_error_init (error);
690 switch (type->type) {
691 case MONO_TYPE_MVAR: {
693 int num = mono_type_get_generic_param_num (type);
694 MonoGenericInst *inst = context->method_inst;
697 if (num >= inst->type_argc) {
698 MonoGenericParamInfo *info = mono_generic_param_info (type->data.generic_param);
699 mono_error_set_bad_image (error, image, "MVAR %d (%s) cannot be expanded in this context with %d instantiations",
700 num, info ? info->name : "", inst->type_argc);
704 if (!is_valid_generic_argument (inst->type_argv [num])) {
705 MonoGenericParamInfo *info = mono_generic_param_info (type->data.generic_param);
706 mono_error_set_bad_image (error, image, "MVAR %d (%s) cannot be expanded with type 0x%x",
707 num, info ? info->name : "", inst->type_argv [num]->type);
711 * Note that the VAR/MVAR cases are different from the rest. The other cases duplicate @type,
712 * while the VAR/MVAR duplicates a type from the context. So, we need to ensure that the
713 * ->byref and ->attrs from @type are propagated to the returned type.
715 nt = mono_metadata_type_dup (image, inst->type_argv [num]);
716 nt->byref = type->byref;
717 nt->attrs = type->attrs;
720 case MONO_TYPE_VAR: {
722 int num = mono_type_get_generic_param_num (type);
723 MonoGenericInst *inst = context->class_inst;
726 if (num >= inst->type_argc) {
727 MonoGenericParamInfo *info = mono_generic_param_info (type->data.generic_param);
728 mono_error_set_bad_image (error, image, "VAR %d (%s) cannot be expanded in this context with %d instantiations",
729 num, info ? info->name : "", inst->type_argc);
732 if (!is_valid_generic_argument (inst->type_argv [num])) {
733 MonoGenericParamInfo *info = mono_generic_param_info (type->data.generic_param);
734 mono_error_set_bad_image (error, image, "VAR %d (%s) cannot be expanded with type 0x%x",
735 num, info ? info->name : "", inst->type_argv [num]->type);
738 nt = mono_metadata_type_dup (image, inst->type_argv [num]);
739 nt->byref = type->byref;
740 nt->attrs = type->attrs;
743 case MONO_TYPE_SZARRAY: {
744 MonoClass *eclass = type->data.klass;
745 MonoType *nt, *inflated = inflate_generic_type (NULL, &eclass->byval_arg, context, error);
746 if (!inflated || !mono_error_ok (error))
748 nt = mono_metadata_type_dup (image, type);
749 nt->data.klass = mono_class_from_mono_type (inflated);
750 mono_metadata_free_type (inflated);
753 case MONO_TYPE_ARRAY: {
754 MonoClass *eclass = type->data.array->eklass;
755 MonoType *nt, *inflated = inflate_generic_type (NULL, &eclass->byval_arg, context, error);
756 if (!inflated || !mono_error_ok (error))
758 nt = mono_metadata_type_dup (image, type);
759 nt->data.array->eklass = mono_class_from_mono_type (inflated);
760 mono_metadata_free_type (inflated);
763 case MONO_TYPE_GENERICINST: {
764 MonoGenericClass *gclass = type->data.generic_class;
765 MonoGenericInst *inst;
767 if (!gclass->context.class_inst->is_open)
770 inst = mono_metadata_inflate_generic_inst (gclass->context.class_inst, context, error);
771 return_val_if_nok (error, NULL);
773 if (inst != gclass->context.class_inst)
774 gclass = mono_metadata_lookup_generic_class (gclass->container_class, inst, gclass->is_dynamic);
776 if (gclass == type->data.generic_class)
779 nt = mono_metadata_type_dup (image, type);
780 nt->data.generic_class = gclass;
783 case MONO_TYPE_CLASS:
784 case MONO_TYPE_VALUETYPE: {
785 MonoClass *klass = type->data.klass;
786 MonoGenericContainer *container = klass->generic_container;
787 MonoGenericInst *inst;
788 MonoGenericClass *gclass = NULL;
794 /* We can't use context->class_inst directly, since it can have more elements */
795 inst = mono_metadata_inflate_generic_inst (container->context.class_inst, context, error);
796 return_val_if_nok (error, NULL);
798 if (inst == container->context.class_inst)
801 gclass = mono_metadata_lookup_generic_class (klass, inst, image_is_dynamic (klass->image));
803 nt = mono_metadata_type_dup (image, type);
804 nt->type = MONO_TYPE_GENERICINST;
805 nt->data.generic_class = gclass;
815 mono_generic_class_get_context (MonoGenericClass *gclass)
817 return &gclass->context;
821 mono_class_get_context (MonoClass *klass)
823 return klass->generic_class ? mono_generic_class_get_context (klass->generic_class) : NULL;
827 * mono_class_get_generic_container:
829 * Return the generic container of KLASS which should be a generic type definition.
831 MonoGenericContainer*
832 mono_class_get_generic_container (MonoClass *klass)
834 g_assert (klass->is_generic);
836 return klass->generic_container;
840 * mono_class_get_generic_class:
842 * Return the MonoGenericClass of KLASS, which should be a generic instance.
845 mono_class_get_generic_class (MonoClass *klass)
847 g_assert (klass->is_inflated);
849 return klass->generic_class;
853 * mono_class_inflate_generic_type_with_mempool:
854 * @mempool: a mempool
856 * @context: a generics context
857 * @error: error context
859 * The same as mono_class_inflate_generic_type, but allocates the MonoType
860 * from mempool if it is non-NULL. If it is NULL, the MonoType is
861 * allocated on the heap and is owned by the caller.
862 * The returned type can potentially be the same as TYPE, so it should not be
863 * modified by the caller, and it should be freed using mono_metadata_free_type ().
866 mono_class_inflate_generic_type_with_mempool (MonoImage *image, MonoType *type, MonoGenericContext *context, MonoError *error)
868 MonoType *inflated = NULL;
869 mono_error_init (error);
872 inflated = inflate_generic_type (image, type, context, error);
873 return_val_if_nok (error, NULL);
876 MonoType *shared = mono_metadata_get_shared_type (type);
881 return mono_metadata_type_dup (image, type);
885 mono_stats.inflated_type_count++;
890 * mono_class_inflate_generic_type:
892 * @context: a generics context
894 * If @type is a generic type and @context is not NULL, instantiate it using the
895 * generics context @context.
897 * Returns: The instantiated type or a copy of @type. The returned MonoType is allocated
898 * on the heap and is owned by the caller. Returns NULL on error.
900 * @deprecated Please use mono_class_inflate_generic_type_checked instead
903 mono_class_inflate_generic_type (MonoType *type, MonoGenericContext *context)
907 result = mono_class_inflate_generic_type_checked (type, context, &error);
908 mono_error_cleanup (&error);
913 * mono_class_inflate_generic_type:
915 * @context: a generics context
916 * @error: error context to use
918 * If @type is a generic type and @context is not NULL, instantiate it using the
919 * generics context @context.
921 * Returns: The instantiated type or a copy of @type. The returned MonoType is allocated
922 * on the heap and is owned by the caller.
925 mono_class_inflate_generic_type_checked (MonoType *type, MonoGenericContext *context, MonoError *error)
927 return mono_class_inflate_generic_type_with_mempool (NULL, type, context, error);
931 * mono_class_inflate_generic_type_no_copy:
933 * Same as inflate_generic_type_with_mempool, but return TYPE if no inflation
937 mono_class_inflate_generic_type_no_copy (MonoImage *image, MonoType *type, MonoGenericContext *context, MonoError *error)
939 MonoType *inflated = NULL;
941 mono_error_init (error);
943 inflated = inflate_generic_type (image, type, context, error);
944 return_val_if_nok (error, NULL);
950 mono_stats.inflated_type_count++;
955 * mono_class_inflate_generic_class:
957 * Inflate the class @gklass with @context. Set @error on failure.
960 mono_class_inflate_generic_class_checked (MonoClass *gklass, MonoGenericContext *context, MonoError *error)
965 inflated = mono_class_inflate_generic_type_checked (&gklass->byval_arg, context, error);
966 return_val_if_nok (error, NULL);
968 res = mono_class_from_mono_type (inflated);
969 mono_metadata_free_type (inflated);
974 static MonoGenericContext
975 inflate_generic_context (MonoGenericContext *context, MonoGenericContext *inflate_with, MonoError *error)
977 MonoGenericInst *class_inst = NULL;
978 MonoGenericInst *method_inst = NULL;
979 MonoGenericContext res = { NULL, NULL };
981 mono_error_init (error);
983 if (context->class_inst) {
984 class_inst = mono_metadata_inflate_generic_inst (context->class_inst, inflate_with, error);
985 if (!mono_error_ok (error))
989 if (context->method_inst) {
990 method_inst = mono_metadata_inflate_generic_inst (context->method_inst, inflate_with, error);
991 if (!mono_error_ok (error))
995 res.class_inst = class_inst;
996 res.method_inst = method_inst;
1002 * mono_class_inflate_generic_method:
1003 * @method: a generic method
1004 * @context: a generics context
1006 * Instantiate the generic method @method using the generics context @context.
1008 * Returns: The new instantiated method
1011 mono_class_inflate_generic_method (MonoMethod *method, MonoGenericContext *context)
1013 return mono_class_inflate_generic_method_full (method, NULL, context);
1017 mono_class_inflate_generic_method_checked (MonoMethod *method, MonoGenericContext *context, MonoError *error)
1019 return mono_class_inflate_generic_method_full_checked (method, NULL, context, error);
1023 * mono_class_inflate_generic_method_full:
1025 * Instantiate method @method with the generic context @context.
1026 * BEWARE: All non-trivial fields are invalid, including klass, signature, and header.
1027 * Use mono_method_signature () and mono_method_get_header () to get the correct values.
1030 mono_class_inflate_generic_method_full (MonoMethod *method, MonoClass *klass_hint, MonoGenericContext *context)
1033 MonoMethod *res = mono_class_inflate_generic_method_full_checked (method, klass_hint, context, &error);
1034 if (!mono_error_ok (&error))
1035 /*FIXME do proper error handling - on this case, kill this function. */
1036 g_error ("Could not inflate generic method due to %s", mono_error_get_message (&error));
1042 * mono_class_inflate_generic_method_full_checked:
1043 * Same as mono_class_inflate_generic_method_full but return failure using @error.
1046 mono_class_inflate_generic_method_full_checked (MonoMethod *method, MonoClass *klass_hint, MonoGenericContext *context, MonoError *error)
1049 MonoMethodInflated *iresult, *cached;
1050 MonoMethodSignature *sig;
1051 MonoGenericContext tmp_context;
1053 mono_error_init (error);
1055 /* The `method' has already been instantiated before => we need to peel out the instantiation and create a new context */
1056 while (method->is_inflated) {
1057 MonoGenericContext *method_context = mono_method_get_context (method);
1058 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
1060 tmp_context = inflate_generic_context (method_context, context, error);
1061 return_val_if_nok (error, NULL);
1063 context = &tmp_context;
1065 if (mono_metadata_generic_context_equal (method_context, context))
1068 method = imethod->declaring;
1072 * A method only needs to be inflated if the context has argument for which it is
1075 * class Foo<T> { void Bar(); } - doesn't need to be inflated if only mvars' are supplied
1076 * class Foo { void Bar<T> (); } - doesn't need to be if only vars' are supplied
1079 if (!((method->is_generic && context->method_inst) ||
1080 (method->klass->generic_container && context->class_inst)))
1083 iresult = g_new0 (MonoMethodInflated, 1);
1084 iresult->context = *context;
1085 iresult->declaring = method;
1087 if (!context->method_inst && method->is_generic)
1088 iresult->context.method_inst = mono_method_get_generic_container (method)->context.method_inst;
1090 if (!context->class_inst) {
1091 g_assert (!iresult->declaring->klass->generic_class);
1092 if (iresult->declaring->klass->generic_container)
1093 iresult->context.class_inst = iresult->declaring->klass->generic_container->context.class_inst;
1094 else if (iresult->declaring->klass->generic_class)
1095 iresult->context.class_inst = iresult->declaring->klass->generic_class->context.class_inst;
1097 /* This can happen with some callers like mono_object_get_virtual_method () */
1098 if (!iresult->declaring->klass->generic_container && !iresult->declaring->klass->generic_class)
1099 iresult->context.class_inst = NULL;
1101 MonoImageSet *set = mono_metadata_get_image_set_for_method (iresult);
1104 mono_image_set_lock (set);
1105 cached = (MonoMethodInflated *)g_hash_table_lookup (set->gmethod_cache, iresult);
1106 mono_image_set_unlock (set);
1110 return (MonoMethod*)cached;
1113 mono_stats.inflated_method_count++;
1115 inflated_methods_size += sizeof (MonoMethodInflated);
1117 sig = mono_method_signature (method);
1119 char *name = mono_type_get_full_name (method->klass);
1120 mono_error_set_bad_image (error, method->klass->image, "Could not resolve signature of method %s:%s", name, method->name);
1126 memcpy (&iresult->method.pinvoke, method, sizeof (MonoMethodPInvoke));
1128 memcpy (&iresult->method.method, method, sizeof (MonoMethod));
1131 result = (MonoMethod *) iresult;
1132 result->is_inflated = TRUE;
1133 result->is_generic = FALSE;
1134 result->sre_method = FALSE;
1135 result->signature = NULL;
1137 if (!context->method_inst) {
1138 /* Set the generic_container of the result to the generic_container of method */
1139 MonoGenericContainer *generic_container = mono_method_get_generic_container (method);
1141 if (generic_container) {
1142 result->is_generic = 1;
1143 mono_method_set_generic_container (result, generic_container);
1147 if (!klass_hint || !klass_hint->generic_class ||
1148 klass_hint->generic_class->container_class != method->klass ||
1149 klass_hint->generic_class->context.class_inst != context->class_inst)
1152 if (method->klass->generic_container)
1153 result->klass = klass_hint;
1155 if (!result->klass) {
1156 MonoType *inflated = inflate_generic_type (NULL, &method->klass->byval_arg, context, error);
1157 if (!mono_error_ok (error))
1160 result->klass = inflated ? mono_class_from_mono_type (inflated) : method->klass;
1162 mono_metadata_free_type (inflated);
1166 * FIXME: This should hold, but it doesn't:
1168 * if (result->is_inflated && mono_method_get_context (result)->method_inst &&
1169 * mono_method_get_context (result)->method_inst == mono_method_get_generic_container (((MonoMethodInflated*)result)->declaring)->context.method_inst) {
1170 * g_assert (result->is_generic);
1173 * Fixing this here causes other things to break, hence a very
1174 * ugly hack in mini-trampolines.c - see
1175 * is_generic_method_definition().
1179 mono_image_set_lock (set);
1180 cached = (MonoMethodInflated *)g_hash_table_lookup (set->gmethod_cache, iresult);
1182 g_hash_table_insert (set->gmethod_cache, iresult, iresult);
1183 iresult->owner = set;
1186 mono_image_set_unlock (set);
1188 return (MonoMethod*)cached;
1196 * mono_get_inflated_method:
1198 * Obsolete. We keep it around since it's mentioned in the public API.
1201 mono_get_inflated_method (MonoMethod *method)
1207 * mono_method_get_context_general:
1209 * @uninflated: handle uninflated methods?
1211 * Returns the generic context of a method or NULL if it doesn't have
1212 * one. For an inflated method that's the context stored in the
1213 * method. Otherwise it's in the method's generic container or in the
1214 * generic container of the method's class.
1217 mono_method_get_context_general (MonoMethod *method, gboolean uninflated)
1219 if (method->is_inflated) {
1220 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
1221 return &imethod->context;
1225 if (method->is_generic)
1226 return &(mono_method_get_generic_container (method)->context);
1227 if (method->klass->generic_container)
1228 return &method->klass->generic_container->context;
1233 * mono_method_get_context:
1236 * Returns the generic context for method if it's inflated, otherwise
1240 mono_method_get_context (MonoMethod *method)
1242 return mono_method_get_context_general (method, FALSE);
1246 * mono_method_get_generic_container:
1248 * Returns the generic container of METHOD, which should be a generic method definition.
1249 * Returns NULL if METHOD is not a generic method definition.
1250 * LOCKING: Acquires the loader lock.
1252 MonoGenericContainer*
1253 mono_method_get_generic_container (MonoMethod *method)
1255 MonoGenericContainer *container;
1257 if (!method->is_generic)
1260 container = (MonoGenericContainer *)mono_image_property_lookup (method->klass->image, method, MONO_METHOD_PROP_GENERIC_CONTAINER);
1261 g_assert (container);
1267 * mono_method_set_generic_container:
1269 * Sets the generic container of METHOD to CONTAINER.
1270 * LOCKING: Acquires the image lock.
1273 mono_method_set_generic_container (MonoMethod *method, MonoGenericContainer* container)
1275 g_assert (method->is_generic);
1277 mono_image_property_insert (method->klass->image, method, MONO_METHOD_PROP_GENERIC_CONTAINER, container);
1281 * mono_class_find_enum_basetype:
1282 * @class: The enum class
1284 * Determine the basetype of an enum by iterating through its fields. We do this
1285 * in a separate function since it is cheaper than calling mono_class_setup_fields.
1288 mono_class_find_enum_basetype (MonoClass *klass, MonoError *error)
1290 MonoGenericContainer *container = NULL;
1291 MonoImage *m = klass->image;
1292 const int top = klass->field.count;
1295 g_assert (klass->enumtype);
1297 mono_error_init (error);
1299 if (klass->generic_container)
1300 container = klass->generic_container;
1301 else if (klass->generic_class) {
1302 MonoClass *gklass = klass->generic_class->container_class;
1304 container = gklass->generic_container;
1305 g_assert (container);
1309 * Fetch all the field information.
1311 for (i = 0; i < top; i++){
1313 guint32 cols [MONO_FIELD_SIZE];
1314 int idx = klass->field.first + i;
1317 /* klass->field.first and idx points into the fieldptr table */
1318 mono_metadata_decode_table_row (m, MONO_TABLE_FIELD, idx, cols, MONO_FIELD_SIZE);
1320 if (cols [MONO_FIELD_FLAGS] & FIELD_ATTRIBUTE_STATIC) //no need to decode static fields
1323 if (!mono_verifier_verify_field_signature (klass->image, cols [MONO_FIELD_SIGNATURE], NULL)) {
1324 mono_error_set_bad_image (error, klass->image, "Invalid field signature %x", cols [MONO_FIELD_SIGNATURE]);
1328 sig = mono_metadata_blob_heap (m, cols [MONO_FIELD_SIGNATURE]);
1329 mono_metadata_decode_value (sig, &sig);
1330 /* FIELD signature == 0x06 */
1332 mono_error_set_bad_image (error, klass->image, "Invalid field signature %x, expected 0x6 but got %x", cols [MONO_FIELD_SIGNATURE], *sig);
1336 ftype = mono_metadata_parse_type_checked (m, container, cols [MONO_FIELD_FLAGS], FALSE, sig + 1, &sig, error);
1340 if (klass->generic_class) {
1341 //FIXME do we leak here?
1342 ftype = mono_class_inflate_generic_type_checked (ftype, mono_class_get_context (klass), error);
1343 if (!mono_error_ok (error))
1345 ftype->attrs = cols [MONO_FIELD_FLAGS];
1350 mono_error_set_type_load_class (error, klass, "Could not find base type");
1353 mono_loader_assert_no_error ();
1358 * Checks for MonoClass::exception_type without resolving all MonoType's into MonoClass'es
1361 mono_type_has_exceptions (MonoType *type)
1363 switch (type->type) {
1364 case MONO_TYPE_CLASS:
1365 case MONO_TYPE_VALUETYPE:
1366 case MONO_TYPE_SZARRAY:
1367 return mono_class_has_failure (type->data.klass);
1368 case MONO_TYPE_ARRAY:
1369 return mono_class_has_failure (type->data.array->eklass);
1370 case MONO_TYPE_GENERICINST:
1371 return mono_class_has_failure (mono_generic_class_get_class (type->data.generic_class));
1380 * Allocate memory for some data belonging to CLASS, either from its image's mempool,
1384 mono_class_alloc (MonoClass *klass, int size)
1386 if (klass->generic_class)
1387 return mono_image_set_alloc (klass->generic_class->owner, size);
1389 return mono_image_alloc (klass->image, size);
1393 mono_class_alloc0 (MonoClass *klass, int size)
1397 res = mono_class_alloc (klass, size);
1398 memset (res, 0, size);
1402 #define mono_class_new0(klass,struct_type, n_structs) \
1403 ((struct_type *) mono_class_alloc0 ((klass), ((gsize) sizeof (struct_type)) * ((gsize) (n_structs))))
1406 * mono_class_setup_basic_field_info:
1407 * @class: The class to initialize
1409 * Initializes the klass->fields.
1410 * LOCKING: Assumes the loader lock is held.
1413 mono_class_setup_basic_field_info (MonoClass *klass)
1415 MonoClassField *field;
1423 gtd = klass->generic_class ? mono_class_get_generic_type_definition (klass) : NULL;
1424 image = klass->image;
1425 top = klass->field.count;
1427 if (klass->generic_class && image_is_dynamic (klass->generic_class->container_class->image) && !klass->generic_class->container_class->wastypebuilder) {
1429 * This happens when a generic instance of an unfinished generic typebuilder
1430 * is used as an element type for creating an array type. We can't initialize
1431 * the fields of this class using the fields of gklass, since gklass is not
1432 * finished yet, fields could be added to it later.
1438 mono_class_setup_basic_field_info (gtd);
1440 top = gtd->field.count;
1441 klass->field.first = gtd->field.first;
1442 klass->field.count = gtd->field.count;
1445 klass->fields = (MonoClassField *)mono_class_alloc0 (klass, sizeof (MonoClassField) * top);
1448 * Fetch all the field information.
1450 for (i = 0; i < top; i++){
1451 field = &klass->fields [i];
1452 field->parent = klass;
1455 field->name = mono_field_get_name (>d->fields [i]);
1457 int idx = klass->field.first + i;
1458 /* klass->field.first and idx points into the fieldptr table */
1459 guint32 name_idx = mono_metadata_decode_table_row_col (image, MONO_TABLE_FIELD, idx, MONO_FIELD_NAME);
1460 /* The name is needed for fieldrefs */
1461 field->name = mono_metadata_string_heap (image, name_idx);
1467 * mono_class_setup_fields:
1468 * @class: The class to initialize
1470 * Initializes the klass->fields.
1471 * LOCKING: Assumes the loader lock is held.
1474 mono_class_setup_fields (MonoClass *klass)
1477 MonoImage *m = klass->image;
1479 guint32 layout = klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK;
1480 int i, blittable = TRUE;
1481 guint32 real_size = 0;
1482 guint32 packing_size = 0;
1483 gboolean explicit_size;
1484 MonoClassField *field;
1485 MonoGenericContainer *container = NULL;
1486 MonoClass *gtd = klass->generic_class ? mono_class_get_generic_type_definition (klass) : NULL;
1489 * FIXME: We have a race condition here. It's possible that this function returns
1490 * to its caller with `instance_size` set to `0` instead of the actual size. This
1491 * is not a problem when the function is called recursively on the same class,
1492 * because the size will be initialized by the outer invocation. What follows is a
1493 * description of how it can occur in other cases, too. There it is a problem,
1494 * because it can lead to the GC being asked to allocate an object of size `0`,
1495 * which SGen chokes on. The race condition is triggered infrequently by
1496 * `tests/sgen-suspend.cs`.
1498 * This function is called for a class whenever one of its subclasses is inited.
1499 * For example, it's called for every subclass of Object. What it does is this:
1501 * if (klass->setup_fields_called)
1504 * klass->instance_size = 0;
1506 * klass->setup_fields_called = 1;
1507 * ... critical point
1508 * klass->instance_size = actual_instance_size;
1510 * The last two steps are sometimes reversed, but that only changes the way in which
1511 * the race condition works.
1513 * Assume thread A goes through this function and makes it to the critical point.
1514 * Now thread B runs the function and, since `setup_fields_called` is set, returns
1515 * immediately, but `instance_size` is incorrect.
1517 * The other case looks like this:
1519 * if (klass->setup_fields_called)
1521 * ... critical point X
1522 * klass->instance_size = 0;
1523 * ... critical point Y
1524 * klass->instance_size = actual_instance_size;
1526 * klass->setup_fields_called = 1;
1528 * Assume thread A goes through the function and makes it to critical point X. Now
1529 * thread B runs through the whole of the function, returning, assuming
1530 * `instance_size` is set. At that point thread A gets to run and makes it to
1531 * critical point Y, at which time `instance_size` is `0` again, invalidating thread
1534 if (klass->setup_fields_called)
1537 if (klass->generic_class && image_is_dynamic (klass->generic_class->container_class->image) && !klass->generic_class->container_class->wastypebuilder) {
1539 * This happens when a generic instance of an unfinished generic typebuilder
1540 * is used as an element type for creating an array type. We can't initialize
1541 * the fields of this class using the fields of gklass, since gklass is not
1542 * finished yet, fields could be added to it later.
1547 mono_class_setup_basic_field_info (klass);
1548 top = klass->field.count;
1551 mono_class_setup_fields (gtd);
1552 if (mono_class_has_failure (gtd)) {
1553 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
1558 klass->instance_size = 0;
1560 klass->sizes.class_size = 0;
1562 if (klass->parent) {
1563 /* For generic instances, klass->parent might not have been initialized */
1564 mono_class_init (klass->parent);
1565 if (!klass->parent->size_inited) {
1566 mono_class_setup_fields (klass->parent);
1567 if (mono_class_has_failure (klass->parent)) {
1568 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
1572 klass->instance_size += klass->parent->instance_size;
1573 klass->min_align = klass->parent->min_align;
1574 /* we use |= since it may have been set already */
1575 klass->has_references |= klass->parent->has_references;
1576 blittable = klass->parent->blittable;
1578 klass->instance_size = sizeof (MonoObject);
1579 klass->min_align = 1;
1582 /* We can't really enable 16 bytes alignment until the GC supports it.
1583 The whole layout/instance size code must be reviewed because we do alignment calculation in terms of the
1584 boxed instance, which leads to unexplainable holes at the beginning of an object embedding a simd type.
1585 Bug #506144 is an example of this issue.
1587 if (klass->simd_type)
1588 klass->min_align = 16;
1590 /* Get the real size */
1591 explicit_size = mono_metadata_packing_from_typedef (klass->image, klass->type_token, &packing_size, &real_size);
1593 if (explicit_size) {
1594 if ((packing_size & 0xffffff00) != 0) {
1595 char *err_msg = g_strdup_printf ("Could not load struct '%s' with packing size %d >= 256", klass->name, packing_size);
1596 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, err_msg);
1599 klass->packing_size = packing_size;
1600 real_size += klass->instance_size;
1604 if (explicit_size && real_size) {
1605 klass->instance_size = MAX (real_size, klass->instance_size);
1607 klass->blittable = blittable;
1608 mono_memory_barrier ();
1609 klass->size_inited = 1;
1610 klass->fields_inited = 1;
1611 klass->setup_fields_called = 1;
1615 if (layout == TYPE_ATTRIBUTE_AUTO_LAYOUT && !(mono_is_corlib_image (klass->image) && !strcmp (klass->name_space, "System") && !strcmp (klass->name, "ValueType")))
1618 /* Prevent infinite loops if the class references itself */
1619 klass->setup_fields_called = 1;
1621 if (klass->generic_container) {
1622 container = klass->generic_container;
1624 container = gtd->generic_container;
1625 g_assert (container);
1629 * Fetch all the field information.
1631 for (i = 0; i < top; i++){
1632 int idx = klass->field.first + i;
1633 field = &klass->fields [i];
1635 field->parent = klass;
1638 mono_field_resolve_type (field, &error);
1639 if (!mono_error_ok (&error)) {
1640 /*mono_field_resolve_type already failed class*/
1641 mono_error_cleanup (&error);
1645 g_error ("could not resolve %s:%s\n", mono_type_get_full_name(klass), field->name);
1646 g_assert (field->type);
1649 if (mono_field_is_deleted (field))
1652 MonoClassField *gfield = >d->fields [i];
1653 field->offset = gfield->offset;
1655 if (layout == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) {
1657 mono_metadata_field_info (m, idx, &offset, NULL, NULL);
1658 field->offset = offset;
1660 if (field->offset == (guint32)-1 && !(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
1661 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Missing field layout info for %s", field->name));
1664 if (field->offset < -1) { /*-1 is used to encode special static fields */
1665 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Invalid negative field offset %d for %s", field->offset, field->name));
1668 if (klass->generic_container) {
1669 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Generic class cannot have explicit layout."));
1675 /* Only do these checks if we still think this type is blittable */
1676 if (blittable && !(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
1677 if (field->type->byref || MONO_TYPE_IS_REFERENCE (field->type)) {
1680 MonoClass *field_class = mono_class_from_mono_type (field->type);
1682 mono_class_setup_fields (field_class);
1683 if (mono_class_has_failure (field_class)) {
1684 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
1688 if (!field_class || !field_class->blittable)
1693 if (klass->enumtype && !(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
1694 klass->cast_class = klass->element_class = mono_class_from_mono_type (field->type);
1695 blittable = klass->element_class->blittable;
1698 if (mono_type_has_exceptions (field->type)) {
1699 char *class_name = mono_type_get_full_name (klass);
1700 char *type_name = mono_type_full_name (field->type);
1702 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
1703 g_warning ("Invalid type %s for instance field %s:%s", type_name, class_name, field->name);
1704 g_free (class_name);
1708 /* The def_value of fields is compute lazily during vtable creation */
1711 if (klass == mono_defaults.string_class)
1714 klass->blittable = blittable;
1716 if (klass->enumtype && !mono_class_enum_basetype (klass)) {
1717 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
1720 if (explicit_size && real_size) {
1721 klass->instance_size = MAX (real_size, klass->instance_size);
1724 if (mono_class_has_failure (klass))
1726 mono_class_layout_fields (klass);
1728 /*valuetypes can't be neither bigger than 1Mb or empty. */
1729 if (klass->valuetype && (klass->instance_size <= 0 || klass->instance_size > (0x100000 + sizeof (MonoObject))))
1730 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
1732 mono_memory_barrier ();
1733 klass->fields_inited = 1;
1737 * mono_class_setup_fields_locking:
1738 * @class: The class to initialize
1740 * Initializes the klass->fields array of fields.
1741 * Aquires the loader lock.
1744 mono_class_setup_fields_locking (MonoClass *klass)
1746 /* This can be checked without locks */
1747 if (klass->fields_inited)
1749 mono_loader_lock ();
1750 mono_class_setup_fields (klass);
1751 mono_loader_unlock ();
1755 * mono_class_has_references:
1757 * Returns whenever @klass->has_references is set, initializing it if needed.
1758 * Aquires the loader lock.
1761 mono_class_has_references (MonoClass *klass)
1763 if (klass->init_pending) {
1764 /* Be conservative */
1767 mono_class_init (klass);
1769 return klass->has_references;
1774 * mono_type_get_basic_type_from_generic:
1777 * Returns a closed type corresponding to the possibly open type
1781 mono_type_get_basic_type_from_generic (MonoType *type)
1783 /* When we do generic sharing we let type variables stand for reference/primitive types. */
1784 if (!type->byref && (type->type == MONO_TYPE_VAR || type->type == MONO_TYPE_MVAR) &&
1785 (!type->data.generic_param->gshared_constraint || type->data.generic_param->gshared_constraint->type == MONO_TYPE_OBJECT))
1786 return &mono_defaults.object_class->byval_arg;
1791 type_has_references (MonoClass *klass, MonoType *ftype)
1793 if (MONO_TYPE_IS_REFERENCE (ftype) || IS_GC_REFERENCE (klass, ftype) || ((MONO_TYPE_ISSTRUCT (ftype) && mono_class_has_references (mono_class_from_mono_type (ftype)))))
1795 if (!ftype->byref && (ftype->type == MONO_TYPE_VAR || ftype->type == MONO_TYPE_MVAR)) {
1796 MonoGenericParam *gparam = ftype->data.generic_param;
1798 if (gparam->gshared_constraint)
1799 return mono_class_has_references (mono_class_from_mono_type (gparam->gshared_constraint));
1805 * mono_class_layout_fields:
1808 * Compute the placement of fields inside an object or struct, according to
1809 * the layout rules and set the following fields in @class:
1810 * - has_references (if the class contains instance references firled or structs that contain references)
1811 * - has_static_refs (same, but for static fields)
1812 * - instance_size (size of the object in memory)
1813 * - class_size (size needed for the static fields)
1814 * - size_inited (flag set when the instance_size is set)
1816 * LOCKING: this is supposed to be called with the loader lock held.
1819 mono_class_layout_fields (MonoClass *klass)
1822 const int top = klass->field.count;
1823 guint32 layout = klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK;
1824 guint32 pass, passes, real_size;
1825 gboolean gc_aware_layout = FALSE;
1826 gboolean has_static_fields = FALSE;
1827 MonoClassField *field;
1830 * When we do generic sharing we need to have layout
1831 * information for open generic classes (either with a generic
1832 * context containing type variables or with a generic
1833 * container), so we don't return in that case anymore.
1837 * Enable GC aware auto layout: in this mode, reference
1838 * fields are grouped together inside objects, increasing collector
1840 * Requires that all classes whose layout is known to native code be annotated
1841 * with [StructLayout (LayoutKind.Sequential)]
1842 * Value types have gc_aware_layout disabled by default, as per
1843 * what the default is for other runtimes.
1845 /* corlib is missing [StructLayout] directives in many places */
1846 if (layout == TYPE_ATTRIBUTE_AUTO_LAYOUT) {
1847 if (!klass->valuetype)
1848 gc_aware_layout = TRUE;
1851 /* Compute klass->has_references */
1853 * Process non-static fields first, since static fields might recursively
1854 * refer to the class itself.
1856 for (i = 0; i < top; i++) {
1859 field = &klass->fields [i];
1861 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
1862 ftype = mono_type_get_underlying_type (field->type);
1863 ftype = mono_type_get_basic_type_from_generic (ftype);
1864 if (type_has_references (klass, ftype))
1865 klass->has_references = TRUE;
1869 for (i = 0; i < top; i++) {
1872 field = &klass->fields [i];
1874 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC) {
1875 ftype = mono_type_get_underlying_type (field->type);
1876 ftype = mono_type_get_basic_type_from_generic (ftype);
1877 if (type_has_references (klass, ftype))
1878 klass->has_static_refs = TRUE;
1882 for (i = 0; i < top; i++) {
1885 field = &klass->fields [i];
1887 ftype = mono_type_get_underlying_type (field->type);
1888 ftype = mono_type_get_basic_type_from_generic (ftype);
1889 if (type_has_references (klass, ftype)) {
1890 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
1891 klass->has_static_refs = TRUE;
1893 klass->has_references = TRUE;
1898 * Compute field layout and total size (not considering static fields)
1902 case TYPE_ATTRIBUTE_AUTO_LAYOUT:
1903 case TYPE_ATTRIBUTE_SEQUENTIAL_LAYOUT:
1905 if (gc_aware_layout)
1910 if (layout != TYPE_ATTRIBUTE_AUTO_LAYOUT)
1913 if (klass->parent) {
1914 mono_class_setup_fields (klass->parent);
1915 if (mono_class_has_failure (klass->parent)) {
1916 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
1919 real_size = klass->parent->instance_size;
1921 real_size = sizeof (MonoObject);
1924 for (pass = 0; pass < passes; ++pass) {
1925 for (i = 0; i < top; i++){
1930 field = &klass->fields [i];
1932 if (mono_field_is_deleted (field))
1934 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
1937 ftype = mono_type_get_underlying_type (field->type);
1938 ftype = mono_type_get_basic_type_from_generic (ftype);
1939 if (gc_aware_layout) {
1940 if (type_has_references (klass, ftype)) {
1949 if ((top == 1) && (klass->instance_size == sizeof (MonoObject)) &&
1950 (strcmp (mono_field_get_name (field), "$PRIVATE$") == 0)) {
1951 /* This field is a hack inserted by MCS to empty structures */
1955 size = mono_type_size (field->type, &align);
1957 /* FIXME (LAMESPEC): should we also change the min alignment according to pack? */
1958 align = klass->packing_size ? MIN (klass->packing_size, align): align;
1959 /* if the field has managed references, we need to force-align it
1962 if (type_has_references (klass, ftype))
1963 align = MAX (align, sizeof (gpointer));
1965 klass->min_align = MAX (align, klass->min_align);
1966 field->offset = real_size;
1968 field->offset += align - 1;
1969 field->offset &= ~(align - 1);
1971 /*TypeBuilders produce all sort of weird things*/
1972 g_assert (image_is_dynamic (klass->image) || field->offset > 0);
1973 real_size = field->offset + size;
1976 klass->instance_size = MAX (real_size, klass->instance_size);
1978 if (klass->instance_size & (klass->min_align - 1)) {
1979 klass->instance_size += klass->min_align - 1;
1980 klass->instance_size &= ~(klass->min_align - 1);
1984 case TYPE_ATTRIBUTE_EXPLICIT_LAYOUT: {
1988 for (i = 0; i < top; i++) {
1993 field = &klass->fields [i];
1996 * There must be info about all the fields in a type if it
1997 * uses explicit layout.
1999 if (mono_field_is_deleted (field))
2001 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
2004 size = mono_type_size (field->type, &align);
2005 align = klass->packing_size ? MIN (klass->packing_size, align): align;
2006 klass->min_align = MAX (align, klass->min_align);
2009 * When we get here, field->offset is already set by the
2010 * loader (for either runtime fields or fields loaded from metadata).
2011 * The offset is from the start of the object: this works for both
2012 * classes and valuetypes.
2014 field->offset += sizeof (MonoObject);
2015 ftype = mono_type_get_underlying_type (field->type);
2016 ftype = mono_type_get_basic_type_from_generic (ftype);
2017 if (type_has_references (klass, ftype)) {
2018 if (field->offset % sizeof (gpointer)) {
2019 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
2026 real_size = MAX (real_size, size + field->offset);
2029 if (klass->has_references) {
2030 ref_bitmap = g_new0 (guint8, real_size / sizeof (gpointer));
2032 /* Check for overlapping reference and non-reference fields */
2033 for (i = 0; i < top; i++) {
2036 field = &klass->fields [i];
2038 if (mono_field_is_deleted (field))
2040 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
2042 ftype = mono_type_get_underlying_type (field->type);
2043 if (MONO_TYPE_IS_REFERENCE (ftype))
2044 ref_bitmap [field->offset / sizeof (gpointer)] = 1;
2046 for (i = 0; i < top; i++) {
2047 field = &klass->fields [i];
2049 if (mono_field_is_deleted (field))
2051 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
2054 // FIXME: Too much code does this
2056 if (!MONO_TYPE_IS_REFERENCE (field->type) && ref_bitmap [field->offset / sizeof (gpointer)]) {
2057 char *err_msg = g_strdup_printf ("Could not load type '%s' because it contains an object field at offset %d that is incorrectly aligned or overlapped by a non-object field.", klass->name, field->offset);
2058 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, err_msg);
2062 g_free (ref_bitmap);
2065 klass->instance_size = MAX (real_size, klass->instance_size);
2066 if (klass->instance_size & (klass->min_align - 1)) {
2067 klass->instance_size += klass->min_align - 1;
2068 klass->instance_size &= ~(klass->min_align - 1);
2074 if (layout != TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) {
2076 * This leads to all kinds of problems with nested structs, so only
2077 * enable it when a MONO_DEBUG property is set.
2079 * For small structs, set min_align to at least the struct size to improve
2080 * performance, and since the JIT memset/memcpy code assumes this and generates
2081 * unaligned accesses otherwise. See #78990 for a testcase.
2083 if (mono_align_small_structs) {
2084 if (klass->instance_size <= sizeof (MonoObject) + sizeof (gpointer))
2085 klass->min_align = MAX (klass->min_align, klass->instance_size - sizeof (MonoObject));
2089 mono_memory_barrier ();
2090 klass->size_inited = 1;
2093 * Compute static field layout and size
2095 for (i = 0; i < top; i++){
2099 field = &klass->fields [i];
2101 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC) || field->type->attrs & FIELD_ATTRIBUTE_LITERAL)
2103 if (mono_field_is_deleted (field))
2106 if (mono_type_has_exceptions (field->type)) {
2107 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
2111 has_static_fields = TRUE;
2113 size = mono_type_size (field->type, &align);
2114 field->offset = klass->sizes.class_size;
2115 /*align is always non-zero here*/
2116 field->offset += align - 1;
2117 field->offset &= ~(align - 1);
2118 klass->sizes.class_size = field->offset + size;
2121 if (has_static_fields && klass->sizes.class_size == 0)
2122 /* Simplify code which depends on class_size != 0 if the class has static fields */
2123 klass->sizes.class_size = 8;
2127 create_array_method (MonoClass *klass, const char *name, MonoMethodSignature *sig)
2131 method = (MonoMethod *) mono_image_alloc0 (klass->image, sizeof (MonoMethodPInvoke));
2132 method->klass = klass;
2133 method->flags = METHOD_ATTRIBUTE_PUBLIC;
2134 method->iflags = METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL;
2135 method->signature = sig;
2136 method->name = name;
2139 if (name [0] == '.') {
2140 method->flags |= METHOD_ATTRIBUTE_RT_SPECIAL_NAME | METHOD_ATTRIBUTE_SPECIAL_NAME;
2142 method->iflags |= METHOD_IMPL_ATTRIBUTE_RUNTIME;
2148 * mono_class_setup_methods:
2151 * Initializes the 'methods' array in CLASS.
2152 * Calling this method should be avoided if possible since it allocates a lot
2153 * of long-living MonoMethod structures.
2154 * Methods belonging to an interface are assigned a sequential slot starting
2157 * On failure this function sets klass->exception_type
2160 mono_class_setup_methods (MonoClass *klass)
2163 MonoMethod **methods;
2168 if (klass->generic_class) {
2170 MonoClass *gklass = klass->generic_class->container_class;
2172 mono_class_init (gklass);
2173 if (!mono_class_has_failure (gklass))
2174 mono_class_setup_methods (gklass);
2175 if (mono_class_has_failure (gklass)) {
2176 /* FIXME make exception_data less opaque so it's possible to dup it here */
2177 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Generic type definition failed to load"));
2181 /* The + 1 makes this always non-NULL to pass the check in mono_class_setup_methods () */
2182 count = gklass->method.count;
2183 methods = (MonoMethod **)mono_class_alloc0 (klass, sizeof (MonoMethod*) * (count + 1));
2185 for (i = 0; i < count; i++) {
2186 methods [i] = mono_class_inflate_generic_method_full_checked (
2187 gklass->methods [i], klass, mono_class_get_context (klass), &error);
2188 if (!mono_error_ok (&error)) {
2189 char *method = mono_method_full_name (gklass->methods [i], TRUE);
2190 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Could not inflate method %s due to %s", method, mono_error_get_message (&error)));
2193 mono_error_cleanup (&error);
2197 } else if (klass->rank) {
2199 MonoMethod *amethod;
2200 MonoMethodSignature *sig;
2201 int count_generic = 0, first_generic = 0;
2203 gboolean jagged_ctor = FALSE;
2205 count = 3 + (klass->rank > 1? 2: 1);
2207 mono_class_setup_interfaces (klass, &error);
2208 g_assert (mono_error_ok (&error)); /*FIXME can this fail for array types?*/
2210 if (klass->rank == 1 && klass->element_class->rank) {
2212 klass->method.count ++;
2215 if (klass->interface_count) {
2216 count_generic = generic_array_methods (klass);
2217 first_generic = count;
2218 count += klass->interface_count * count_generic;
2221 methods = (MonoMethod **)mono_class_alloc0 (klass, sizeof (MonoMethod*) * count);
2223 sig = mono_metadata_signature_alloc (klass->image, klass->rank);
2224 sig->ret = &mono_defaults.void_class->byval_arg;
2225 sig->pinvoke = TRUE;
2226 sig->hasthis = TRUE;
2227 for (i = 0; i < klass->rank; ++i)
2228 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2230 amethod = create_array_method (klass, ".ctor", sig);
2231 methods [method_num++] = amethod;
2232 if (klass->rank > 1) {
2233 sig = mono_metadata_signature_alloc (klass->image, klass->rank * 2);
2234 sig->ret = &mono_defaults.void_class->byval_arg;
2235 sig->pinvoke = TRUE;
2236 sig->hasthis = TRUE;
2237 for (i = 0; i < klass->rank * 2; ++i)
2238 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2240 amethod = create_array_method (klass, ".ctor", sig);
2241 methods [method_num++] = amethod;
2245 /* Jagged arrays have an extra ctor in .net which creates an array of arrays */
2246 sig = mono_metadata_signature_alloc (klass->image, klass->rank + 1);
2247 sig->ret = &mono_defaults.void_class->byval_arg;
2248 sig->pinvoke = TRUE;
2249 sig->hasthis = TRUE;
2250 for (i = 0; i < klass->rank + 1; ++i)
2251 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2252 amethod = create_array_method (klass, ".ctor", sig);
2253 methods [method_num++] = amethod;
2256 /* element Get (idx11, [idx2, ...]) */
2257 sig = mono_metadata_signature_alloc (klass->image, klass->rank);
2258 sig->ret = &klass->element_class->byval_arg;
2259 sig->pinvoke = TRUE;
2260 sig->hasthis = TRUE;
2261 for (i = 0; i < klass->rank; ++i)
2262 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2263 amethod = create_array_method (klass, "Get", sig);
2264 methods [method_num++] = amethod;
2265 /* element& Address (idx11, [idx2, ...]) */
2266 sig = mono_metadata_signature_alloc (klass->image, klass->rank);
2267 sig->ret = &klass->element_class->this_arg;
2268 sig->pinvoke = TRUE;
2269 sig->hasthis = TRUE;
2270 for (i = 0; i < klass->rank; ++i)
2271 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2272 amethod = create_array_method (klass, "Address", sig);
2273 methods [method_num++] = amethod;
2274 /* void Set (idx11, [idx2, ...], element) */
2275 sig = mono_metadata_signature_alloc (klass->image, klass->rank + 1);
2276 sig->ret = &mono_defaults.void_class->byval_arg;
2277 sig->pinvoke = TRUE;
2278 sig->hasthis = TRUE;
2279 for (i = 0; i < klass->rank; ++i)
2280 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2281 sig->params [i] = &klass->element_class->byval_arg;
2282 amethod = create_array_method (klass, "Set", sig);
2283 methods [method_num++] = amethod;
2285 for (i = 0; i < klass->interface_count; i++)
2286 setup_generic_array_ifaces (klass, klass->interfaces [i], methods, first_generic + i * count_generic);
2290 count = klass->method.count;
2291 methods = (MonoMethod **)mono_class_alloc (klass, sizeof (MonoMethod*) * count);
2292 for (i = 0; i < count; ++i) {
2293 int idx = mono_metadata_translate_token_index (klass->image, MONO_TABLE_METHOD, klass->method.first + i + 1);
2294 methods [i] = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | idx, klass, NULL, &error);
2296 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Could not load method %d due to %s", i, mono_error_get_message (&error)));
2297 mono_error_cleanup (&error);
2302 if (MONO_CLASS_IS_INTERFACE (klass)) {
2304 /*Only assign slots to virtual methods as interfaces are allowed to have static methods.*/
2305 for (i = 0; i < count; ++i) {
2306 if (methods [i]->flags & METHOD_ATTRIBUTE_VIRTUAL)
2307 methods [i]->slot = slot++;
2311 mono_image_lock (klass->image);
2313 if (!klass->methods) {
2314 klass->method.count = count;
2316 /* Needed because of the double-checking locking pattern */
2317 mono_memory_barrier ();
2319 klass->methods = methods;
2322 mono_image_unlock (klass->image);
2326 * mono_class_get_method_by_index:
2328 * Returns klass->methods [index], initializing klass->methods if neccesary.
2330 * LOCKING: Acquires the loader lock.
2333 mono_class_get_method_by_index (MonoClass *klass, int index)
2336 /* Avoid calling setup_methods () if possible */
2337 if (klass->generic_class && !klass->methods) {
2338 MonoClass *gklass = klass->generic_class->container_class;
2341 m = mono_class_inflate_generic_method_full_checked (
2342 gklass->methods [index], klass, mono_class_get_context (klass), &error);
2343 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
2345 * If setup_methods () is called later for this class, no duplicates are created,
2346 * since inflate_generic_method guarantees that only one instance of a method
2347 * is created for each context.
2350 mono_class_setup_methods (klass);
2351 g_assert (m == klass->methods [index]);
2355 mono_class_setup_methods (klass);
2356 if (mono_class_has_failure (klass)) /*FIXME do proper error handling*/
2358 g_assert (index >= 0 && index < klass->method.count);
2359 return klass->methods [index];
2364 * mono_class_get_inflated_method:
2366 * Given an inflated class CLASS and a method METHOD which should be a method of
2367 * CLASS's generic definition, return the inflated method corresponding to METHOD.
2370 mono_class_get_inflated_method (MonoClass *klass, MonoMethod *method)
2372 MonoClass *gklass = klass->generic_class->container_class;
2375 g_assert (method->klass == gklass);
2377 mono_class_setup_methods (gklass);
2378 g_assert (!mono_class_has_failure (gklass)); /*FIXME do proper error handling*/
2380 for (i = 0; i < gklass->method.count; ++i) {
2381 if (gklass->methods [i] == method) {
2382 if (klass->methods) {
2383 return klass->methods [i];
2386 MonoMethod *result = mono_class_inflate_generic_method_full_checked (gklass->methods [i], klass, mono_class_get_context (klass), &error);
2387 g_assert (mono_error_ok (&error)); /* FIXME don't swallow this error */
2397 * mono_class_get_vtable_entry:
2399 * Returns klass->vtable [offset], computing it if neccesary. Returns NULL on failure.
2400 * LOCKING: Acquires the loader lock.
2403 mono_class_get_vtable_entry (MonoClass *klass, int offset)
2407 if (klass->rank == 1) {
2409 * szarrays do not overwrite any methods of Array, so we can avoid
2410 * initializing their vtables in some cases.
2412 mono_class_setup_vtable (klass->parent);
2413 if (offset < klass->parent->vtable_size)
2414 return klass->parent->vtable [offset];
2417 if (klass->generic_class) {
2419 MonoClass *gklass = klass->generic_class->container_class;
2420 mono_class_setup_vtable (gklass);
2421 m = gklass->vtable [offset];
2423 m = mono_class_inflate_generic_method_full_checked (m, klass, mono_class_get_context (klass), &error);
2424 g_assert (mono_error_ok (&error)); /* FIXME don't swallow this error */
2426 mono_class_setup_vtable (klass);
2427 if (mono_class_has_failure (klass))
2429 m = klass->vtable [offset];
2436 * mono_class_get_vtable_size:
2438 * Return the vtable size for KLASS.
2441 mono_class_get_vtable_size (MonoClass *klass)
2443 mono_class_setup_vtable (klass);
2445 return klass->vtable_size;
2449 * mono_class_setup_properties:
2451 * Initialize klass->ext.property and klass->ext.properties.
2453 * This method can fail the class.
2456 mono_class_setup_properties (MonoClass *klass)
2458 guint startm, endm, i, j;
2459 guint32 cols [MONO_PROPERTY_SIZE];
2460 MonoTableInfo *msemt = &klass->image->tables [MONO_TABLE_METHODSEMANTICS];
2461 MonoProperty *properties;
2465 if (klass->ext && klass->ext->properties)
2468 if (klass->generic_class) {
2469 MonoClass *gklass = klass->generic_class->container_class;
2471 mono_class_init (gklass);
2472 mono_class_setup_properties (gklass);
2473 if (mono_class_has_failure (gklass)) {
2474 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Generic type definition failed to load"));
2478 properties = mono_class_new0 (klass, MonoProperty, gklass->ext->property.count + 1);
2480 for (i = 0; i < gklass->ext->property.count; i++) {
2482 MonoProperty *prop = &properties [i];
2484 *prop = gklass->ext->properties [i];
2487 prop->get = mono_class_inflate_generic_method_full_checked (
2488 prop->get, klass, mono_class_get_context (klass), &error);
2490 prop->set = mono_class_inflate_generic_method_full_checked (
2491 prop->set, klass, mono_class_get_context (klass), &error);
2493 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
2494 prop->parent = klass;
2497 first = gklass->ext->property.first;
2498 count = gklass->ext->property.count;
2500 first = mono_metadata_properties_from_typedef (klass->image, mono_metadata_token_index (klass->type_token) - 1, &last);
2501 count = last - first;
2504 mono_class_setup_methods (klass);
2505 if (mono_class_has_failure (klass))
2509 properties = (MonoProperty *)mono_class_alloc0 (klass, sizeof (MonoProperty) * count);
2510 for (i = first; i < last; ++i) {
2511 mono_metadata_decode_table_row (klass->image, MONO_TABLE_PROPERTY, i, cols, MONO_PROPERTY_SIZE);
2512 properties [i - first].parent = klass;
2513 properties [i - first].attrs = cols [MONO_PROPERTY_FLAGS];
2514 properties [i - first].name = mono_metadata_string_heap (klass->image, cols [MONO_PROPERTY_NAME]);
2516 startm = mono_metadata_methods_from_property (klass->image, i, &endm);
2517 for (j = startm; j < endm; ++j) {
2520 mono_metadata_decode_row (msemt, j, cols, MONO_METHOD_SEMA_SIZE);
2522 if (klass->image->uncompressed_metadata) {
2524 /* It seems like the MONO_METHOD_SEMA_METHOD column needs no remapping */
2525 method = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | cols [MONO_METHOD_SEMA_METHOD], klass, NULL, &error);
2526 mono_error_cleanup (&error); /* FIXME don't swallow this error */
2528 method = klass->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - klass->method.first];
2531 switch (cols [MONO_METHOD_SEMA_SEMANTICS]) {
2532 case METHOD_SEMANTIC_SETTER:
2533 properties [i - first].set = method;
2535 case METHOD_SEMANTIC_GETTER:
2536 properties [i - first].get = method;
2545 mono_class_alloc_ext (klass);
2547 mono_image_lock (klass->image);
2549 if (klass->ext->properties) {
2550 /* We leak 'properties' which was allocated from the image mempool */
2551 mono_image_unlock (klass->image);
2555 klass->ext->property.first = first;
2556 klass->ext->property.count = count;
2558 /* Flush any pending writes as we do double checked locking on klass->ext->properties */
2559 mono_memory_barrier ();
2561 /* Leave this assignment as the last op in the function */
2562 klass->ext->properties = properties;
2564 mono_image_unlock (klass->image);
2568 inflate_method_listz (MonoMethod **methods, MonoClass *klass, MonoGenericContext *context)
2570 MonoMethod **om, **retval;
2573 for (om = methods, count = 0; *om; ++om, ++count)
2576 retval = g_new0 (MonoMethod*, count + 1);
2578 for (om = methods, count = 0; *om; ++om, ++count) {
2580 retval [count] = mono_class_inflate_generic_method_full_checked (*om, klass, context, &error);
2581 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
2587 /*This method can fail the class.*/
2589 mono_class_setup_events (MonoClass *klass)
2592 guint startm, endm, i, j;
2593 guint32 cols [MONO_EVENT_SIZE];
2594 MonoTableInfo *msemt = &klass->image->tables [MONO_TABLE_METHODSEMANTICS];
2598 if (klass->ext && klass->ext->events)
2601 if (klass->generic_class) {
2602 MonoClass *gklass = klass->generic_class->container_class;
2603 MonoGenericContext *context = NULL;
2605 mono_class_setup_events (gklass);
2606 if (mono_class_has_failure (gklass)) {
2607 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Generic type definition failed to load"));
2611 first = gklass->ext->event.first;
2612 count = gklass->ext->event.count;
2614 events = mono_class_new0 (klass, MonoEvent, count);
2617 context = mono_class_get_context (klass);
2619 for (i = 0; i < count; i++) {
2621 MonoEvent *event = &events [i];
2622 MonoEvent *gevent = &gklass->ext->events [i];
2624 mono_error_init (&error); //since we do conditional calls, we must ensure the default value is ok
2626 event->parent = klass;
2627 event->name = gevent->name;
2628 event->add = gevent->add ? mono_class_inflate_generic_method_full_checked (gevent->add, klass, context, &error) : NULL;
2629 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
2630 event->remove = gevent->remove ? mono_class_inflate_generic_method_full_checked (gevent->remove, klass, context, &error) : NULL;
2631 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
2632 event->raise = gevent->raise ? mono_class_inflate_generic_method_full_checked (gevent->raise, klass, context, &error) : NULL;
2633 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
2635 #ifndef MONO_SMALL_CONFIG
2636 event->other = gevent->other ? inflate_method_listz (gevent->other, klass, context) : NULL;
2638 event->attrs = gevent->attrs;
2641 first = mono_metadata_events_from_typedef (klass->image, mono_metadata_token_index (klass->type_token) - 1, &last);
2642 count = last - first;
2645 mono_class_setup_methods (klass);
2646 if (mono_class_has_failure (klass)) {
2647 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Generic type definition failed to load"));
2652 events = (MonoEvent *)mono_class_alloc0 (klass, sizeof (MonoEvent) * count);
2653 for (i = first; i < last; ++i) {
2654 MonoEvent *event = &events [i - first];
2656 mono_metadata_decode_table_row (klass->image, MONO_TABLE_EVENT, i, cols, MONO_EVENT_SIZE);
2657 event->parent = klass;
2658 event->attrs = cols [MONO_EVENT_FLAGS];
2659 event->name = mono_metadata_string_heap (klass->image, cols [MONO_EVENT_NAME]);
2661 startm = mono_metadata_methods_from_event (klass->image, i, &endm);
2662 for (j = startm; j < endm; ++j) {
2665 mono_metadata_decode_row (msemt, j, cols, MONO_METHOD_SEMA_SIZE);
2667 if (klass->image->uncompressed_metadata) {
2669 /* It seems like the MONO_METHOD_SEMA_METHOD column needs no remapping */
2670 method = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | cols [MONO_METHOD_SEMA_METHOD], klass, NULL, &error);
2671 mono_error_cleanup (&error); /* FIXME don't swallow this error */
2673 method = klass->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - klass->method.first];
2676 switch (cols [MONO_METHOD_SEMA_SEMANTICS]) {
2677 case METHOD_SEMANTIC_ADD_ON:
2678 event->add = method;
2680 case METHOD_SEMANTIC_REMOVE_ON:
2681 event->remove = method;
2683 case METHOD_SEMANTIC_FIRE:
2684 event->raise = method;
2686 case METHOD_SEMANTIC_OTHER: {
2687 #ifndef MONO_SMALL_CONFIG
2690 if (event->other == NULL) {
2691 event->other = g_new0 (MonoMethod*, 2);
2693 while (event->other [n])
2695 event->other = (MonoMethod **)g_realloc (event->other, (n + 2) * sizeof (MonoMethod*));
2697 event->other [n] = method;
2698 /* NULL terminated */
2699 event->other [n + 1] = NULL;
2710 mono_class_alloc_ext (klass);
2712 mono_image_lock (klass->image);
2714 if (klass->ext->events) {
2715 mono_image_unlock (klass->image);
2719 klass->ext->event.first = first;
2720 klass->ext->event.count = count;
2722 /* Flush any pending writes as we do double checked locking on klass->ext.events */
2723 mono_memory_barrier ();
2725 /* Leave this assignment as the last op in the function */
2726 klass->ext->events = events;
2728 mono_image_unlock (klass->image);
2732 * Global pool of interface IDs, represented as a bitset.
2733 * LOCKING: Protected by the classes lock.
2735 static MonoBitSet *global_interface_bitset = NULL;
2738 * mono_unload_interface_ids:
2739 * @bitset: bit set of interface IDs
2741 * When an image is unloaded, the interface IDs associated with
2742 * the image are put back in the global pool of IDs so the numbers
2746 mono_unload_interface_ids (MonoBitSet *bitset)
2749 mono_bitset_sub (global_interface_bitset, bitset);
2754 mono_unload_interface_id (MonoClass *klass)
2756 if (global_interface_bitset && klass->interface_id) {
2758 mono_bitset_clear (global_interface_bitset, klass->interface_id);
2764 * mono_get_unique_iid:
2767 * Assign a unique integer ID to the interface represented by @class.
2768 * The ID will positive and as small as possible.
2769 * LOCKING: Acquires the classes lock.
2770 * Returns: The new ID.
2773 mono_get_unique_iid (MonoClass *klass)
2777 g_assert (MONO_CLASS_IS_INTERFACE (klass));
2781 if (!global_interface_bitset) {
2782 global_interface_bitset = mono_bitset_new (128, 0);
2785 iid = mono_bitset_find_first_unset (global_interface_bitset, -1);
2787 int old_size = mono_bitset_size (global_interface_bitset);
2788 MonoBitSet *new_set = mono_bitset_clone (global_interface_bitset, old_size * 2);
2789 mono_bitset_free (global_interface_bitset);
2790 global_interface_bitset = new_set;
2793 mono_bitset_set (global_interface_bitset, iid);
2794 /* set the bit also in the per-image set */
2795 if (!klass->generic_class) {
2796 if (klass->image->interface_bitset) {
2797 if (iid >= mono_bitset_size (klass->image->interface_bitset)) {
2798 MonoBitSet *new_set = mono_bitset_clone (klass->image->interface_bitset, iid + 1);
2799 mono_bitset_free (klass->image->interface_bitset);
2800 klass->image->interface_bitset = new_set;
2803 klass->image->interface_bitset = mono_bitset_new (iid + 1, 0);
2805 mono_bitset_set (klass->image->interface_bitset, iid);
2810 #ifndef MONO_SMALL_CONFIG
2811 if (mono_print_vtable) {
2813 char *type_name = mono_type_full_name (&klass->byval_arg);
2814 if (klass->generic_class && !klass->generic_class->context.class_inst->is_open) {
2815 generic_id = klass->generic_class->context.class_inst->id;
2816 g_assert (generic_id != 0);
2820 printf ("Interface: assigned id %d to %s|%s|%d\n", iid, klass->image->name, type_name, generic_id);
2825 g_assert (iid <= 65535);
2830 collect_implemented_interfaces_aux (MonoClass *klass, GPtrArray **res, MonoError *error)
2835 mono_class_setup_interfaces (klass, error);
2836 return_if_nok (error);
2838 for (i = 0; i < klass->interface_count; i++) {
2839 ic = klass->interfaces [i];
2842 *res = g_ptr_array_new ();
2843 g_ptr_array_add (*res, ic);
2844 mono_class_init (ic);
2845 if (mono_class_has_failure (ic)) {
2846 mono_error_set_type_load_class (error, ic, "Error Loading class");
2850 collect_implemented_interfaces_aux (ic, res, error);
2851 return_if_nok (error);
2856 mono_class_get_implemented_interfaces (MonoClass *klass, MonoError *error)
2858 GPtrArray *res = NULL;
2860 collect_implemented_interfaces_aux (klass, &res, error);
2861 if (!mono_error_ok (error)) {
2863 g_ptr_array_free (res, TRUE);
2870 compare_interface_ids (const void *p_key, const void *p_element) {
2871 const MonoClass *key = (const MonoClass *)p_key;
2872 const MonoClass *element = *(const MonoClass **)p_element;
2874 return (key->interface_id - element->interface_id);
2877 /*FIXME verify all callers if they should switch to mono_class_interface_offset_with_variance*/
2879 mono_class_interface_offset (MonoClass *klass, MonoClass *itf) {
2880 MonoClass **result = (MonoClass **)mono_binary_search (
2882 klass->interfaces_packed,
2883 klass->interface_offsets_count,
2884 sizeof (MonoClass *),
2885 compare_interface_ids);
2887 return klass->interface_offsets_packed [result - (klass->interfaces_packed)];
2894 * mono_class_interface_offset_with_variance:
2896 * Return the interface offset of @itf in @klass. Sets @non_exact_match to TRUE if the match required variance check
2897 * If @itf is an interface with generic variant arguments, try to find the compatible one.
2899 * Note that this function is responsible for resolving ambiguities. Right now we use whatever ordering interfaces_packed gives us.
2901 * FIXME figure out MS disambiguation rules and fix this function.
2904 mono_class_interface_offset_with_variance (MonoClass *klass, MonoClass *itf, gboolean *non_exact_match) {
2905 int i = mono_class_interface_offset (klass, itf);
2906 *non_exact_match = FALSE;
2910 if (!mono_class_has_variant_generic_params (itf))
2913 for (i = 0; i < klass->interface_offsets_count; i++) {
2914 if (mono_class_is_variant_compatible (itf, klass->interfaces_packed [i], FALSE)) {
2915 *non_exact_match = TRUE;
2916 return klass->interface_offsets_packed [i];
2924 print_implemented_interfaces (MonoClass *klass) {
2927 GPtrArray *ifaces = NULL;
2929 int ancestor_level = 0;
2931 name = mono_type_get_full_name (klass);
2932 printf ("Packed interface table for class %s has size %d\n", name, klass->interface_offsets_count);
2935 for (i = 0; i < klass->interface_offsets_count; i++)
2936 printf (" [%03d][UUID %03d][SLOT %03d][SIZE %03d] interface %s.%s\n", i,
2937 klass->interfaces_packed [i]->interface_id,
2938 klass->interface_offsets_packed [i],
2939 klass->interfaces_packed [i]->method.count,
2940 klass->interfaces_packed [i]->name_space,
2941 klass->interfaces_packed [i]->name );
2942 printf ("Interface flags: ");
2943 for (i = 0; i <= klass->max_interface_id; i++)
2944 if (MONO_CLASS_IMPLEMENTS_INTERFACE (klass, i))
2945 printf ("(%d,T)", i);
2947 printf ("(%d,F)", i);
2949 printf ("Dump interface flags:");
2950 #ifdef COMPRESSED_INTERFACE_BITMAP
2952 const uint8_t* p = klass->interface_bitmap;
2953 i = klass->max_interface_id;
2955 printf (" %d x 00 %02X", p [0], p [1]);
2961 for (i = 0; i < ((((klass->max_interface_id + 1) >> 3)) + (((klass->max_interface_id + 1) & 7)? 1 :0)); i++)
2962 printf (" %02X", klass->interface_bitmap [i]);
2965 while (klass != NULL) {
2966 printf ("[LEVEL %d] Implemented interfaces by class %s:\n", ancestor_level, klass->name);
2967 ifaces = mono_class_get_implemented_interfaces (klass, &error);
2968 if (!mono_error_ok (&error)) {
2969 printf (" Type failed due to %s\n", mono_error_get_message (&error));
2970 mono_error_cleanup (&error);
2971 } else if (ifaces) {
2972 for (i = 0; i < ifaces->len; i++) {
2973 MonoClass *ic = (MonoClass *)g_ptr_array_index (ifaces, i);
2974 printf (" [UIID %d] interface %s\n", ic->interface_id, ic->name);
2975 printf (" [%03d][UUID %03d][SLOT %03d][SIZE %03d] interface %s.%s\n", i,
2977 mono_class_interface_offset (klass, ic),
2982 g_ptr_array_free (ifaces, TRUE);
2985 klass = klass->parent;
2990 inflate_class_one_arg (MonoClass *gtype, MonoClass *arg0)
2993 args [0] = &arg0->byval_arg;
2995 return mono_class_bind_generic_parameters (gtype, 1, args, FALSE);
2999 array_class_get_if_rank (MonoClass *klass, guint rank)
3001 return rank ? mono_array_class_get (klass, rank) : klass;
3005 fill_valuetype_array_derived_types (MonoClass **valuetype_types, MonoClass *eclass, int rank)
3007 valuetype_types [0] = eclass;
3008 if (eclass == mono_defaults.int16_class)
3009 valuetype_types [1] = mono_defaults.uint16_class;
3010 else if (eclass == mono_defaults.uint16_class)
3011 valuetype_types [1] = mono_defaults.int16_class;
3012 else if (eclass == mono_defaults.int32_class)
3013 valuetype_types [1] = mono_defaults.uint32_class;
3014 else if (eclass == mono_defaults.uint32_class)
3015 valuetype_types [1] = mono_defaults.int32_class;
3016 else if (eclass == mono_defaults.int64_class)
3017 valuetype_types [1] = mono_defaults.uint64_class;
3018 else if (eclass == mono_defaults.uint64_class)
3019 valuetype_types [1] = mono_defaults.int64_class;
3020 else if (eclass == mono_defaults.byte_class)
3021 valuetype_types [1] = mono_defaults.sbyte_class;
3022 else if (eclass == mono_defaults.sbyte_class)
3023 valuetype_types [1] = mono_defaults.byte_class;
3024 else if (eclass->enumtype && mono_class_enum_basetype (eclass))
3025 valuetype_types [1] = mono_class_from_mono_type (mono_class_enum_basetype (eclass));
3028 /* this won't be needed once bug #325495 is completely fixed
3029 * though we'll need something similar to know which interfaces to allow
3030 * in arrays when they'll be lazyly created
3032 * FIXME: System.Array/InternalEnumerator don't need all this interface fabrication machinery.
3033 * MS returns diferrent types based on which instance is called. For example:
3034 * object obj = new byte[10][];
3035 * Type a = ((IEnumerable<byte[]>)obj).GetEnumerator ().GetType ();
3036 * Type b = ((IEnumerable<IList<byte>>)obj).GetEnumerator ().GetType ();
3039 * Fixing this should kill quite some code, save some bits and improve compatibility.
3042 get_implicit_generic_array_interfaces (MonoClass *klass, int *num, int *is_enumerator)
3044 MonoClass *eclass = klass->element_class;
3045 static MonoClass* generic_icollection_class = NULL;
3046 static MonoClass* generic_ienumerable_class = NULL;
3047 static MonoClass* generic_ienumerator_class = NULL;
3048 static MonoClass* generic_ireadonlylist_class = NULL;
3049 static MonoClass* generic_ireadonlycollection_class = NULL;
3050 MonoClass *valuetype_types[2] = { NULL, NULL };
3051 MonoClass **interfaces = NULL;
3052 int i, nifaces, interface_count, real_count, original_rank;
3054 gboolean internal_enumerator;
3055 gboolean eclass_is_valuetype;
3057 if (!mono_defaults.generic_ilist_class) {
3061 internal_enumerator = FALSE;
3062 eclass_is_valuetype = FALSE;
3063 original_rank = eclass->rank;
3064 if (klass->byval_arg.type != MONO_TYPE_SZARRAY) {
3065 if (klass->generic_class && klass->nested_in == mono_defaults.array_class && strcmp (klass->name, "InternalEnumerator`1") == 0) {
3067 * For a Enumerator<T[]> we need to get the list of interfaces for T.
3069 eclass = mono_class_from_mono_type (klass->generic_class->context.class_inst->type_argv [0]);
3070 original_rank = eclass->rank;
3072 eclass = eclass->element_class;
3073 internal_enumerator = TRUE;
3074 *is_enumerator = TRUE;
3082 * with this non-lazy impl we can't implement all the interfaces so we do just the minimal stuff
3083 * for deep levels of arrays of arrays (string[][] has all the interfaces, string[][][] doesn't)
3085 all_interfaces = eclass->rank && eclass->element_class->rank? FALSE: TRUE;
3087 if (!generic_icollection_class) {
3088 generic_icollection_class = mono_class_load_from_name (mono_defaults.corlib,
3089 "System.Collections.Generic", "ICollection`1");
3090 generic_ienumerable_class = mono_class_load_from_name (mono_defaults.corlib,
3091 "System.Collections.Generic", "IEnumerable`1");
3092 generic_ienumerator_class = mono_class_load_from_name (mono_defaults.corlib,
3093 "System.Collections.Generic", "IEnumerator`1");
3094 generic_ireadonlylist_class = mono_class_load_from_name (mono_defaults.corlib,
3095 "System.Collections.Generic", "IReadOnlyList`1");
3096 generic_ireadonlycollection_class = mono_class_load_from_name (mono_defaults.corlib,
3097 "System.Collections.Generic", "IReadOnlyCollection`1");
3100 mono_class_init (eclass);
3103 * Arrays in 2.0 need to implement a number of generic interfaces
3104 * (IList`1, ICollection`1, IEnumerable`1 for a number of types depending
3105 * on the element class). For net 4.5, we also need to implement IReadOnlyList`1/IReadOnlyCollection`1.
3106 * We collect the types needed to build the
3107 * instantiations in interfaces at intervals of 3/5, because 3/5 are
3108 * the generic interfaces needed to implement.
3110 * On 4.5, as an optimization, we don't expand ref classes for the variant generic interfaces
3111 * (IEnumerator, IReadOnlyList and IReadOnlyColleciton). The regular dispatch code can handle those cases.
3113 if (eclass->valuetype) {
3114 nifaces = generic_ireadonlylist_class ? 5 : 3;
3115 fill_valuetype_array_derived_types (valuetype_types, eclass, original_rank);
3117 /* IList, ICollection, IEnumerable, IReadOnlyList`1 */
3118 real_count = interface_count = valuetype_types [1] ? (nifaces * 2) : nifaces;
3119 if (internal_enumerator) {
3121 if (valuetype_types [1])
3125 interfaces = (MonoClass **)g_malloc0 (sizeof (MonoClass*) * real_count);
3126 interfaces [0] = valuetype_types [0];
3127 if (valuetype_types [1])
3128 interfaces [nifaces] = valuetype_types [1];
3130 eclass_is_valuetype = TRUE;
3133 int idepth = eclass->idepth;
3134 if (!internal_enumerator)
3136 nifaces = generic_ireadonlylist_class ? 2 : 3;
3138 // FIXME: This doesn't seem to work/required for generic params
3139 if (!(eclass->this_arg.type == MONO_TYPE_VAR || eclass->this_arg.type == MONO_TYPE_MVAR || (image_is_dynamic (eclass->image) && !eclass->wastypebuilder)))
3140 mono_class_setup_interface_offsets (eclass);
3142 interface_count = all_interfaces? eclass->interface_offsets_count: eclass->interface_count;
3143 /* we add object for interfaces and the supertypes for the other
3144 * types. The last of the supertypes is the element class itself which we
3145 * already created the explicit interfaces for (so we include it for IEnumerator
3146 * and exclude it for arrays).
3148 if (MONO_CLASS_IS_INTERFACE (eclass))
3151 interface_count += idepth;
3152 if (eclass->rank && eclass->element_class->valuetype) {
3153 fill_valuetype_array_derived_types (valuetype_types, eclass->element_class, original_rank);
3154 if (valuetype_types [1])
3157 /* IList, ICollection, IEnumerable, IReadOnlyList */
3158 interface_count *= nifaces;
3159 real_count = interface_count;
3160 if (internal_enumerator) {
3161 real_count += (MONO_CLASS_IS_INTERFACE (eclass) ? 1 : idepth) + eclass->interface_offsets_count;
3162 if (valuetype_types [1])
3165 interfaces = (MonoClass **)g_malloc0 (sizeof (MonoClass*) * real_count);
3166 if (MONO_CLASS_IS_INTERFACE (eclass)) {
3167 interfaces [0] = mono_defaults.object_class;
3171 for (i = 0; i < idepth; i++) {
3172 mono_class_init (eclass->supertypes [i]);
3173 interfaces [j] = eclass->supertypes [i];
3177 if (all_interfaces) {
3178 for (i = 0; i < eclass->interface_offsets_count; i++) {
3179 interfaces [j] = eclass->interfaces_packed [i];
3183 for (i = 0; i < eclass->interface_count; i++) {
3184 interfaces [j] = eclass->interfaces [i];
3188 if (valuetype_types [1]) {
3189 interfaces [j] = array_class_get_if_rank (valuetype_types [1], original_rank);
3194 /* instantiate the generic interfaces */
3195 for (i = 0; i < interface_count; i += nifaces) {
3196 MonoClass *iface = interfaces [i];
3198 interfaces [i + 0] = inflate_class_one_arg (mono_defaults.generic_ilist_class, iface);
3199 interfaces [i + 1] = inflate_class_one_arg (generic_icollection_class, iface);
3201 if (eclass->valuetype) {
3202 interfaces [i + 2] = inflate_class_one_arg (generic_ienumerable_class, iface);
3203 if (generic_ireadonlylist_class) {
3204 interfaces [i + 3] = inflate_class_one_arg (generic_ireadonlylist_class, iface);
3205 interfaces [i + 4] = inflate_class_one_arg (generic_ireadonlycollection_class, iface);
3208 if (!generic_ireadonlylist_class)
3209 interfaces [i + 2] = inflate_class_one_arg (generic_ienumerable_class, iface);
3212 if (internal_enumerator) {
3214 /* instantiate IEnumerator<iface> */
3215 for (i = 0; i < interface_count; i++) {
3216 interfaces [i] = inflate_class_one_arg (generic_ienumerator_class, interfaces [i]);
3218 j = interface_count;
3219 if (!eclass_is_valuetype) {
3220 if (MONO_CLASS_IS_INTERFACE (eclass)) {
3221 interfaces [j] = inflate_class_one_arg (generic_ienumerator_class, mono_defaults.object_class);
3224 for (i = 0; i < eclass->idepth; i++) {
3225 interfaces [j] = inflate_class_one_arg (generic_ienumerator_class, eclass->supertypes [i]);
3229 for (i = 0; i < eclass->interface_offsets_count; i++) {
3230 interfaces [j] = inflate_class_one_arg (generic_ienumerator_class, eclass->interfaces_packed [i]);
3234 interfaces [j++] = inflate_class_one_arg (generic_ienumerator_class, array_class_get_if_rank (valuetype_types [0], original_rank));
3236 if (valuetype_types [1])
3237 interfaces [j] = inflate_class_one_arg (generic_ienumerator_class, array_class_get_if_rank (valuetype_types [1], original_rank));
3241 char *type_name = mono_type_get_name_full (&klass->byval_arg, 0);
3242 for (i = 0; i < real_count; ++i) {
3243 char *name = mono_type_get_name_full (&interfaces [i]->byval_arg, 0);
3244 g_print ("%s implements %s\n", type_name, name);
3255 find_array_interface (MonoClass *klass, const char *name)
3258 for (i = 0; i < klass->interface_count; ++i) {
3259 if (strcmp (klass->interfaces [i]->name, name) == 0)
3266 * Return the number of virtual methods.
3267 * Even for interfaces we can't simply return the number of methods as all CLR types are allowed to have static methods.
3268 * Return -1 on failure.
3269 * FIXME It would be nice if this information could be cached somewhere.
3272 count_virtual_methods (MonoClass *klass)
3276 klass = mono_class_get_generic_type_definition (klass); /*We can find this information by looking at the GTD*/
3278 if (klass->methods || !MONO_CLASS_HAS_STATIC_METADATA (klass)) {
3279 mono_class_setup_methods (klass);
3280 if (mono_class_has_failure (klass))
3283 for (i = 0; i < klass->method.count; ++i) {
3284 flags = klass->methods [i]->flags;
3285 if (flags & METHOD_ATTRIBUTE_VIRTUAL)
3289 for (i = 0; i < klass->method.count; ++i) {
3290 flags = mono_metadata_decode_table_row_col (klass->image, MONO_TABLE_METHOD, klass->method.first + i, MONO_METHOD_FLAGS);
3292 if (flags & METHOD_ATTRIBUTE_VIRTUAL)
3300 find_interface (int num_ifaces, MonoClass **interfaces_full, MonoClass *ic)
3308 m = (l + num_ifaces) / 2;
3309 if (interfaces_full [m] == ic)
3311 if (l == num_ifaces)
3313 if (!interfaces_full [m] || interfaces_full [m]->interface_id > ic->interface_id) {
3322 find_interface_offset (int num_ifaces, MonoClass **interfaces_full, int *interface_offsets_full, MonoClass *ic)
3324 int i = find_interface (num_ifaces, interfaces_full, ic);
3326 return interface_offsets_full [i];
3331 set_interface_and_offset (int num_ifaces, MonoClass **interfaces_full, int *interface_offsets_full, MonoClass *ic, int offset, mono_bool force_set)
3333 int i = find_interface (num_ifaces, interfaces_full, ic);
3337 interface_offsets_full [i] = offset;
3340 for (i = 0; i < num_ifaces; ++i) {
3341 if (interfaces_full [i]) {
3343 if (interfaces_full [i]->interface_id < ic->interface_id)
3346 while (end < num_ifaces && interfaces_full [end]) end++;
3347 memmove (interfaces_full + i + 1, interfaces_full + i, sizeof (MonoClass*) * (end - i));
3348 memmove (interface_offsets_full + i + 1, interface_offsets_full + i, sizeof (int) * (end - i));
3350 interfaces_full [i] = ic;
3351 interface_offsets_full [i] = offset;
3357 #ifdef COMPRESSED_INTERFACE_BITMAP
3360 * Compressed interface bitmap design.
3362 * Interface bitmaps take a large amount of memory, because their size is
3363 * linear with the maximum interface id assigned in the process (each interface
3364 * is assigned a unique id as it is loaded). The number of interface classes
3365 * is high because of the many implicit interfaces implemented by arrays (we'll
3366 * need to lazy-load them in the future).
3367 * Most classes implement a very small number of interfaces, so the bitmap is
3368 * sparse. This bitmap needs to be checked by interface casts, so access to the
3369 * needed bit must be fast and doable with few jit instructions.
3371 * The current compression format is as follows:
3372 * *) it is a sequence of one or more two-byte elements
3373 * *) the first byte in the element is the count of empty bitmap bytes
3374 * at the current bitmap position
3375 * *) the second byte in the element is an actual bitmap byte at the current
3378 * As an example, the following compressed bitmap bytes:
3379 * 0x07 0x01 0x00 0x7
3380 * correspond to the following bitmap:
3381 * 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x01 0x07
3383 * Each two-byte element can represent up to 2048 bitmap bits, but as few as a single
3384 * bitmap byte for non-sparse sequences. In practice the interface bitmaps created
3385 * during a gmcs bootstrap are reduced to less tha 5% of the original size.
3389 * mono_compress_bitmap:
3390 * @dest: destination buffer
3391 * @bitmap: bitmap buffer
3392 * @size: size of @bitmap in bytes
3394 * This is a mono internal function.
3395 * The @bitmap data is compressed into a format that is small but
3396 * still searchable in few instructions by the JIT and runtime.
3397 * The compressed data is stored in the buffer pointed to by the
3398 * @dest array. Passing a #NULL value for @dest allows to just compute
3399 * the size of the buffer.
3400 * This compression algorithm assumes the bits set in the bitmap are
3401 * few and far between, like in interface bitmaps.
3402 * Returns: The size of the compressed bitmap in bytes.
3405 mono_compress_bitmap (uint8_t *dest, const uint8_t *bitmap, int size)
3409 const uint8_t *end = bitmap + size;
3410 while (bitmap < end) {
3411 if (*bitmap || numz == 255) {
3435 * mono_class_interface_match:
3436 * @bitmap: a compressed bitmap buffer
3437 * @id: the index to check in the bitmap
3439 * This is a mono internal function.
3440 * Checks if a bit is set in a compressed interface bitmap. @id must
3441 * be already checked for being smaller than the maximum id encoded in the
3444 * Returns: A non-zero value if bit @id is set in the bitmap @bitmap,
3448 mono_class_interface_match (const uint8_t *bitmap, int id)
3451 id -= bitmap [0] * 8;
3455 return bitmap [1] & (1 << id);
3464 * LOCKING: this is supposed to be called with the loader lock held.
3465 * Return -1 on failure and set exception_type
3468 setup_interface_offsets (MonoClass *klass, int cur_slot, gboolean overwrite)
3472 int i, j, max_iid, num_ifaces;
3473 MonoClass **interfaces_full = NULL;
3474 int *interface_offsets_full = NULL;
3476 GPtrArray **ifaces_array = NULL;
3477 int interface_offsets_count;
3478 MonoClass **array_interfaces = NULL;
3479 int num_array_interfaces;
3480 int is_enumerator = FALSE;
3482 mono_class_setup_supertypes (klass);
3484 * get the implicit generic interfaces for either the arrays or for System.Array/InternalEnumerator<T>
3485 * implicit interfaces have the property that they are assigned the same slot in the
3486 * vtables for compatible interfaces
3488 array_interfaces = get_implicit_generic_array_interfaces (klass, &num_array_interfaces, &is_enumerator);
3490 /* compute maximum number of slots and maximum interface id */
3492 num_ifaces = num_array_interfaces; /* this can include duplicated ones */
3493 ifaces_array = g_new0 (GPtrArray *, klass->idepth);
3494 for (j = 0; j < klass->idepth; j++) {
3495 k = klass->supertypes [j];
3496 num_ifaces += k->interface_count;
3497 for (i = 0; i < k->interface_count; i++) {
3498 ic = k->interfaces [i];
3501 mono_class_init (ic);
3503 if (max_iid < ic->interface_id)
3504 max_iid = ic->interface_id;
3506 ifaces = mono_class_get_implemented_interfaces (k, &error);
3507 if (!mono_error_ok (&error)) {
3508 char *name = mono_type_get_full_name (k);
3509 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Error getting the interfaces of %s due to %s", name, mono_error_get_message (&error)));
3511 mono_error_cleanup (&error);
3516 num_ifaces += ifaces->len;
3517 for (i = 0; i < ifaces->len; ++i) {
3518 ic = (MonoClass *)g_ptr_array_index (ifaces, i);
3519 if (max_iid < ic->interface_id)
3520 max_iid = ic->interface_id;
3522 ifaces_array [j] = ifaces;
3526 for (i = 0; i < num_array_interfaces; ++i) {
3527 ic = array_interfaces [i];
3528 mono_class_init (ic);
3529 if (max_iid < ic->interface_id)
3530 max_iid = ic->interface_id;
3533 if (MONO_CLASS_IS_INTERFACE (klass)) {
3535 if (max_iid < klass->interface_id)
3536 max_iid = klass->interface_id;
3538 klass->max_interface_id = max_iid;
3539 /* compute vtable offset for interfaces */
3540 interfaces_full = (MonoClass **)g_malloc0 (sizeof (MonoClass*) * num_ifaces);
3541 interface_offsets_full = (int *)g_malloc (sizeof (int) * num_ifaces);
3543 for (i = 0; i < num_ifaces; i++) {
3544 interface_offsets_full [i] = -1;
3547 /* skip the current class */
3548 for (j = 0; j < klass->idepth - 1; j++) {
3549 k = klass->supertypes [j];
3550 ifaces = ifaces_array [j];
3553 for (i = 0; i < ifaces->len; ++i) {
3555 ic = (MonoClass *)g_ptr_array_index (ifaces, i);
3557 /*Force the sharing of interface offsets between parent and subtypes.*/
3558 io = mono_class_interface_offset (k, ic);
3560 set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, ic, io, TRUE);
3565 g_assert (klass == klass->supertypes [klass->idepth - 1]);
3566 ifaces = ifaces_array [klass->idepth - 1];
3568 for (i = 0; i < ifaces->len; ++i) {
3570 ic = (MonoClass *)g_ptr_array_index (ifaces, i);
3571 if (set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, ic, cur_slot, FALSE))
3573 count = count_virtual_methods (ic);
3575 char *name = mono_type_get_full_name (ic);
3576 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Error calculating interface offset of %s", name));
3585 if (MONO_CLASS_IS_INTERFACE (klass))
3586 set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, klass, cur_slot, TRUE);
3588 if (num_array_interfaces) {
3589 if (is_enumerator) {
3590 int ienumerator_idx = find_array_interface (klass, "IEnumerator`1");
3591 int ienumerator_offset = find_interface_offset (num_ifaces, interfaces_full, interface_offsets_full, klass->interfaces [ienumerator_idx]);
3592 g_assert (ienumerator_offset >= 0);
3593 for (i = 0; i < num_array_interfaces; ++i) {
3594 ic = array_interfaces [i];
3595 if (strcmp (ic->name, "IEnumerator`1") == 0)
3596 set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, ic, ienumerator_offset, TRUE);
3598 g_assert_not_reached ();
3599 /*g_print ("type %s has %s offset at %d (%s)\n", klass->name, ic->name, interface_offsets_full [ic->interface_id], klass->interfaces [0]->name);*/
3602 int ilist_offset, icollection_offset, ienumerable_offset, ireadonlylist_offset, ireadonlycollection_offset;
3603 int ilist_iface_idx = find_array_interface (klass, "IList`1");
3604 MonoClass* ilist_class = klass->interfaces [ilist_iface_idx];
3605 int ireadonlylist_iface_idx = find_array_interface (klass, "IReadOnlyList`1");
3606 MonoClass* ireadonlylist_class = ireadonlylist_iface_idx != -1 ? klass->interfaces [ireadonlylist_iface_idx] : NULL;
3607 int icollection_iface_idx = find_array_interface (ilist_class, "ICollection`1");
3608 int ienumerable_iface_idx = find_array_interface (ilist_class, "IEnumerable`1");
3609 int ireadonlycollection_iface_idx = ireadonlylist_iface_idx != -1 ? find_array_interface (ireadonlylist_class, "IReadOnlyCollection`1") : -1;
3610 ilist_offset = find_interface_offset (num_ifaces, interfaces_full, interface_offsets_full, klass->interfaces [ilist_iface_idx]);
3611 icollection_offset = find_interface_offset (num_ifaces, interfaces_full, interface_offsets_full, ilist_class->interfaces [icollection_iface_idx]);
3612 ienumerable_offset = find_interface_offset (num_ifaces, interfaces_full, interface_offsets_full, ilist_class->interfaces [ienumerable_iface_idx]);
3613 ireadonlylist_offset = ireadonlylist_iface_idx != -1 ? find_interface_offset (num_ifaces, interfaces_full, interface_offsets_full, klass->interfaces [ireadonlylist_iface_idx]) : -1;
3614 ireadonlycollection_offset = ireadonlycollection_iface_idx != -1 ? find_interface_offset (num_ifaces, interfaces_full, interface_offsets_full, ireadonlylist_class->interfaces [ireadonlycollection_iface_idx]) : -1;
3615 g_assert (ilist_offset >= 0 && icollection_offset >= 0 && ienumerable_offset >= 0);
3616 for (i = 0; i < num_array_interfaces; ++i) {
3618 ic = array_interfaces [i];
3619 if (ic->generic_class->container_class == mono_defaults.generic_ilist_class)
3620 offset = ilist_offset;
3621 else if (strcmp (ic->name, "ICollection`1") == 0)
3622 offset = icollection_offset;
3623 else if (strcmp (ic->name, "IEnumerable`1") == 0)
3624 offset = ienumerable_offset;
3625 else if (strcmp (ic->name, "IReadOnlyList`1") == 0)
3626 offset = ireadonlylist_offset;
3627 else if (strcmp (ic->name, "IReadOnlyCollection`1") == 0)
3628 offset = ireadonlycollection_offset;
3630 g_assert_not_reached ();
3631 set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, ic, offset, TRUE);
3632 /*g_print ("type %s has %s offset at %d (%s)\n", klass->name, ic->name, offset, klass->interfaces [0]->name);*/
3637 for (interface_offsets_count = 0, i = 0; i < num_ifaces; i++) {
3638 if (interface_offsets_full [i] != -1) {
3639 interface_offsets_count ++;
3644 * We might get called multiple times:
3645 * - mono_class_init ()
3646 * - mono_class_setup_vtable ().
3647 * - mono_class_setup_interface_offsets ().
3648 * mono_class_setup_interface_offsets () passes 0 as CUR_SLOT, so the computed interface offsets will be invalid. This
3649 * means we have to overwrite those when called from other places (#4440).
3651 if (klass->interfaces_packed) {
3653 g_assert (klass->interface_offsets_count == interface_offsets_count);
3657 klass->interface_offsets_count = interface_offsets_count;
3658 klass->interfaces_packed = (MonoClass **)mono_class_alloc (klass, sizeof (MonoClass*) * interface_offsets_count);
3659 klass->interface_offsets_packed = (guint16 *)mono_class_alloc (klass, sizeof (guint16) * interface_offsets_count);
3660 bsize = (sizeof (guint8) * ((max_iid + 1) >> 3)) + (((max_iid + 1) & 7)? 1 :0);
3661 #ifdef COMPRESSED_INTERFACE_BITMAP
3662 bitmap = g_malloc0 (bsize);
3664 bitmap = (uint8_t *)mono_class_alloc0 (klass, bsize);
3666 for (i = 0; i < interface_offsets_count; i++) {
3667 int id = interfaces_full [i]->interface_id;
3668 bitmap [id >> 3] |= (1 << (id & 7));
3669 klass->interfaces_packed [i] = interfaces_full [i];
3670 klass->interface_offsets_packed [i] = interface_offsets_full [i];
3671 /*if (num_array_interfaces)
3672 g_print ("type %s has %s offset at %d\n", mono_type_get_name_full (&klass->byval_arg, 0), mono_type_get_name_full (&interfaces_full [i]->byval_arg, 0), interface_offsets_full [i]);*/
3674 #ifdef COMPRESSED_INTERFACE_BITMAP
3675 i = mono_compress_bitmap (NULL, bitmap, bsize);
3676 klass->interface_bitmap = mono_class_alloc0 (klass, i);
3677 mono_compress_bitmap (klass->interface_bitmap, bitmap, bsize);
3680 klass->interface_bitmap = bitmap;
3685 g_free (interfaces_full);
3686 g_free (interface_offsets_full);
3687 g_free (array_interfaces);
3688 for (i = 0; i < klass->idepth; i++) {
3689 ifaces = ifaces_array [i];
3691 g_ptr_array_free (ifaces, TRUE);
3693 g_free (ifaces_array);
3695 //printf ("JUST DONE: ");
3696 //print_implemented_interfaces (klass);
3702 * Setup interface offsets for interfaces.
3704 * - klass->max_interface_id
3705 * - klass->interface_offsets_count
3706 * - klass->interfaces_packed
3707 * - klass->interface_offsets_packed
3708 * - klass->interface_bitmap
3710 * This function can fail @class.
3713 mono_class_setup_interface_offsets (MonoClass *klass)
3715 mono_loader_lock ();
3717 setup_interface_offsets (klass, 0, FALSE);
3719 mono_loader_unlock ();
3722 /*Checks if @klass has @parent as one of it's parents type gtd
3726 * Bar<T> : Foo<Bar<Bar<T>>>
3730 mono_class_has_gtd_parent (MonoClass *klass, MonoClass *parent)
3732 klass = mono_class_get_generic_type_definition (klass);
3733 parent = mono_class_get_generic_type_definition (parent);
3734 mono_class_setup_supertypes (klass);
3735 mono_class_setup_supertypes (parent);
3737 return klass->idepth >= parent->idepth &&
3738 mono_class_get_generic_type_definition (klass->supertypes [parent->idepth - 1]) == parent;
3742 mono_class_check_vtable_constraints (MonoClass *klass, GList *in_setup)
3744 MonoGenericInst *ginst;
3746 if (!klass->generic_class) {
3747 mono_class_setup_vtable_full (klass, in_setup);
3748 return !mono_class_has_failure (klass);
3751 mono_class_setup_vtable_full (mono_class_get_generic_type_definition (klass), in_setup);
3752 if (mono_class_has_failure (klass->generic_class->container_class)) {
3753 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Failed to load generic definition vtable"));
3757 ginst = klass->generic_class->context.class_inst;
3758 for (i = 0; i < ginst->type_argc; ++i) {
3760 if (ginst->type_argv [i]->type != MONO_TYPE_GENERICINST)
3762 arg = mono_class_from_mono_type (ginst->type_argv [i]);
3763 /*Those 2 will be checked by mono_class_setup_vtable itself*/
3764 if (mono_class_has_gtd_parent (klass, arg) || mono_class_has_gtd_parent (arg, klass))
3766 if (!mono_class_check_vtable_constraints (arg, in_setup)) {
3767 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Failed to load generic parameter %d", i));
3775 * mono_class_setup_vtable:
3777 * Creates the generic vtable of CLASS.
3778 * Initializes the following fields in MonoClass:
3781 * Plus all the fields initialized by setup_interface_offsets ().
3782 * If there is an error during vtable construction, klass->exception_type is set.
3784 * LOCKING: Acquires the loader lock.
3787 mono_class_setup_vtable (MonoClass *klass)
3789 mono_class_setup_vtable_full (klass, NULL);
3793 mono_class_setup_vtable_full (MonoClass *klass, GList *in_setup)
3795 MonoMethod **overrides;
3796 MonoGenericContext *context;
3804 if (MONO_CLASS_IS_INTERFACE (klass)) {
3805 /* This sets method->slot for all methods if this is an interface */
3806 mono_class_setup_methods (klass);
3810 if (mono_class_has_failure (klass))
3813 if (g_list_find (in_setup, klass))
3816 mono_loader_lock ();
3818 if (klass->vtable) {
3819 mono_loader_unlock ();
3823 mono_stats.generic_vtable_count ++;
3824 in_setup = g_list_prepend (in_setup, klass);
3826 if (klass->generic_class) {
3827 if (!mono_class_check_vtable_constraints (klass, in_setup)) {
3828 mono_loader_unlock ();
3829 g_list_remove (in_setup, klass);
3833 context = mono_class_get_context (klass);
3834 type_token = klass->generic_class->container_class->type_token;
3836 context = (MonoGenericContext *) klass->generic_container;
3837 type_token = klass->type_token;
3840 if (image_is_dynamic (klass->image)) {
3841 /* Generic instances can have zero method overrides without causing any harm.
3842 * This is true since we don't do layout all over again for them, we simply inflate
3843 * the layout of the parent.
3845 mono_reflection_get_dynamic_overrides (klass, &overrides, &onum);
3847 /* The following call fails if there are missing methods in the type */
3848 /* FIXME it's probably a good idea to avoid this for generic instances. */
3849 ok = mono_class_get_overrides_full (klass->image, type_token, &overrides, &onum, context);
3853 mono_class_setup_vtable_general (klass, overrides, onum, in_setup);
3855 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Could not load list of method overrides"));
3859 mono_loader_unlock ();
3860 g_list_remove (in_setup, klass);
3865 #define DEBUG_INTERFACE_VTABLE_CODE 0
3866 #define TRACE_INTERFACE_VTABLE_CODE 0
3867 #define VERIFY_INTERFACE_VTABLE_CODE 0
3868 #define VTABLE_SELECTOR (1)
3870 #if (TRACE_INTERFACE_VTABLE_CODE|DEBUG_INTERFACE_VTABLE_CODE)
3871 #define DEBUG_INTERFACE_VTABLE(stmt) do {\
3872 if (!(VTABLE_SELECTOR)) break; \
3876 #define DEBUG_INTERFACE_VTABLE(stmt)
3879 #if TRACE_INTERFACE_VTABLE_CODE
3880 #define TRACE_INTERFACE_VTABLE(stmt) do {\
3881 if (!(VTABLE_SELECTOR)) break; \
3885 #define TRACE_INTERFACE_VTABLE(stmt)
3888 #if VERIFY_INTERFACE_VTABLE_CODE
3889 #define VERIFY_INTERFACE_VTABLE(stmt) do {\
3890 if (!(VTABLE_SELECTOR)) break; \
3894 #define VERIFY_INTERFACE_VTABLE(stmt)
3898 #if (TRACE_INTERFACE_VTABLE_CODE|DEBUG_INTERFACE_VTABLE_CODE)
3900 mono_signature_get_full_desc (MonoMethodSignature *sig, gboolean include_namespace)
3904 GString *res = g_string_new ("");
3906 g_string_append_c (res, '(');
3907 for (i = 0; i < sig->param_count; ++i) {
3909 g_string_append_c (res, ',');
3910 mono_type_get_desc (res, sig->params [i], include_namespace);
3912 g_string_append (res, ")=>");
3913 if (sig->ret != NULL) {
3914 mono_type_get_desc (res, sig->ret, include_namespace);
3916 g_string_append (res, "NULL");
3919 g_string_free (res, FALSE);
3923 print_method_signatures (MonoMethod *im, MonoMethod *cm) {
3924 char *im_sig = mono_signature_get_full_desc (mono_method_signature (im), TRUE);
3925 char *cm_sig = mono_signature_get_full_desc (mono_method_signature (cm), TRUE);
3926 printf ("(IM \"%s\", CM \"%s\")", im_sig, cm_sig);
3934 is_wcf_hack_disabled (void)
3936 static gboolean disabled;
3937 static gboolean inited = FALSE;
3939 disabled = g_getenv ("MONO_DISABLE_WCF_HACK") != NULL;
3946 check_interface_method_override (MonoClass *klass, MonoMethod *im, MonoMethod *cm, gboolean require_newslot, gboolean interface_is_explicitly_implemented_by_class, gboolean slot_is_empty)
3948 MonoMethodSignature *cmsig, *imsig;
3949 if (strcmp (im->name, cm->name) == 0) {
3950 if (! (cm->flags & METHOD_ATTRIBUTE_PUBLIC)) {
3951 TRACE_INTERFACE_VTABLE (printf ("[PUBLIC CHECK FAILED]"));
3954 if (! slot_is_empty) {
3955 if (require_newslot) {
3956 if (! interface_is_explicitly_implemented_by_class) {
3957 TRACE_INTERFACE_VTABLE (printf ("[NOT EXPLICIT IMPLEMENTATION IN FULL SLOT REFUSED]"));
3960 if (! (cm->flags & METHOD_ATTRIBUTE_NEW_SLOT)) {
3961 TRACE_INTERFACE_VTABLE (printf ("[NEWSLOT CHECK FAILED]"));
3965 TRACE_INTERFACE_VTABLE (printf ("[FULL SLOT REFUSED]"));
3968 cmsig = mono_method_signature (cm);
3969 imsig = mono_method_signature (im);
3970 if (!cmsig || !imsig) {
3971 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Could not resolve the signature of a virtual method"));
3975 if (! mono_metadata_signature_equal (cmsig, imsig)) {
3976 TRACE_INTERFACE_VTABLE (printf ("[SIGNATURE CHECK FAILED "));
3977 TRACE_INTERFACE_VTABLE (print_method_signatures (im, cm));
3978 TRACE_INTERFACE_VTABLE (printf ("]"));
3981 TRACE_INTERFACE_VTABLE (printf ("[SECURITY CHECKS]"));
3982 if (mono_security_core_clr_enabled ())
3983 mono_security_core_clr_check_override (klass, cm, im);
3985 TRACE_INTERFACE_VTABLE (printf ("[NAME CHECK OK]"));
3986 if (is_wcf_hack_disabled () && !mono_method_can_access_method_full (cm, im, NULL)) {
3987 char *body_name = mono_method_full_name (cm, TRUE);
3988 char *decl_name = mono_method_full_name (im, TRUE);
3989 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Method %s overrides method '%s' which is not accessible", body_name, decl_name));
3997 MonoClass *ic = im->klass;
3998 const char *ic_name_space = ic->name_space;
3999 const char *ic_name = ic->name;
4002 if (! require_newslot) {
4003 TRACE_INTERFACE_VTABLE (printf ("[INJECTED METHOD REFUSED]"));
4006 if (cm->klass->rank == 0) {
4007 TRACE_INTERFACE_VTABLE (printf ("[RANK CHECK FAILED]"));
4010 cmsig = mono_method_signature (cm);
4011 imsig = mono_method_signature (im);
4012 if (!cmsig || !imsig) {
4013 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Could not resolve the signature of a virtual method"));
4017 if (! mono_metadata_signature_equal (cmsig, imsig)) {
4018 TRACE_INTERFACE_VTABLE (printf ("[(INJECTED) SIGNATURE CHECK FAILED "));
4019 TRACE_INTERFACE_VTABLE (print_method_signatures (im, cm));
4020 TRACE_INTERFACE_VTABLE (printf ("]"));
4023 if (mono_class_get_image (ic) != mono_defaults.corlib) {
4024 TRACE_INTERFACE_VTABLE (printf ("[INTERFACE CORLIB CHECK FAILED]"));
4027 if ((ic_name_space == NULL) || (strcmp (ic_name_space, "System.Collections.Generic") != 0)) {
4028 TRACE_INTERFACE_VTABLE (printf ("[INTERFACE NAMESPACE CHECK FAILED]"));
4031 if ((ic_name == NULL) || ((strcmp (ic_name, "IEnumerable`1") != 0) && (strcmp (ic_name, "ICollection`1") != 0) && (strcmp (ic_name, "IList`1") != 0) && (strcmp (ic_name, "IReadOnlyList`1") != 0) && (strcmp (ic_name, "IReadOnlyCollection`1") != 0))) {
4032 TRACE_INTERFACE_VTABLE (printf ("[INTERFACE NAME CHECK FAILED]"));
4036 subname = strstr (cm->name, ic_name_space);
4037 if (subname != cm->name) {
4038 TRACE_INTERFACE_VTABLE (printf ("[ACTUAL NAMESPACE CHECK FAILED]"));
4041 subname += strlen (ic_name_space);
4042 if (subname [0] != '.') {
4043 TRACE_INTERFACE_VTABLE (printf ("[FIRST DOT CHECK FAILED]"));
4047 if (strstr (subname, ic_name) != subname) {
4048 TRACE_INTERFACE_VTABLE (printf ("[ACTUAL CLASS NAME CHECK FAILED]"));
4051 subname += strlen (ic_name);
4052 if (subname [0] != '.') {
4053 TRACE_INTERFACE_VTABLE (printf ("[SECOND DOT CHECK FAILED]"));
4057 if (strcmp (subname, im->name) != 0) {
4058 TRACE_INTERFACE_VTABLE (printf ("[METHOD NAME CHECK FAILED]"));
4062 TRACE_INTERFACE_VTABLE (printf ("[SECURITY CHECKS (INJECTED CASE)]"));
4063 if (mono_security_core_clr_enabled ())
4064 mono_security_core_clr_check_override (klass, cm, im);
4066 TRACE_INTERFACE_VTABLE (printf ("[INJECTED INTERFACE CHECK OK]"));
4067 if (is_wcf_hack_disabled () && !mono_method_can_access_method_full (cm, im, NULL)) {
4068 char *body_name = mono_method_full_name (cm, TRUE);
4069 char *decl_name = mono_method_full_name (im, TRUE);
4070 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Method %s overrides method '%s' which is not accessible", body_name, decl_name));
4080 #if (TRACE_INTERFACE_VTABLE_CODE|DEBUG_INTERFACE_VTABLE_CODE)
4082 foreach_override (gpointer key, gpointer value, gpointer user_data) {
4083 MonoMethod *method = key;
4084 MonoMethod *override = value;
4085 MonoClass *method_class = mono_method_get_class (method);
4086 MonoClass *override_class = mono_method_get_class (override);
4088 printf (" Method '%s.%s:%s' has override '%s.%s:%s'\n",
4089 mono_class_get_namespace (method_class), mono_class_get_name (method_class), mono_method_get_name (method),
4090 mono_class_get_namespace (override_class), mono_class_get_name (override_class), mono_method_get_name (override));
4093 print_overrides (GHashTable *override_map, const char *message) {
4095 printf ("Override map \"%s\" START:\n", message);
4096 g_hash_table_foreach (override_map, foreach_override, NULL);
4097 printf ("Override map \"%s\" END.\n", message);
4099 printf ("Override map \"%s\" EMPTY.\n", message);
4103 print_vtable_full (MonoClass *klass, MonoMethod** vtable, int size, int first_non_interface_slot, const char *message, gboolean print_interfaces) {
4104 char *full_name = mono_type_full_name (&klass->byval_arg);
4108 printf ("*** Vtable for class '%s' at \"%s\" (size %d)\n", full_name, message, size);
4110 if (print_interfaces) {
4111 print_implemented_interfaces (klass);
4112 printf ("* Interfaces for class '%s' done.\nStarting vtable (size %d):\n", full_name, size);
4115 if (klass->parent) {
4116 parent_size = klass->parent->vtable_size;
4120 for (i = 0; i < size; ++i) {
4121 MonoMethod *cm = vtable [i];
4122 char *cm_name = cm ? mono_method_full_name (cm, TRUE) : g_strdup ("nil");
4123 char newness = (i < parent_size) ? 'O' : ((i < first_non_interface_slot) ? 'I' : 'N');
4125 printf (" [%c][%03d][INDEX %03d] %s [%p]\n", newness, i, cm ? cm->slot : - 1, cm_name, cm);
4133 #if VERIFY_INTERFACE_VTABLE_CODE
4135 mono_method_try_get_vtable_index (MonoMethod *method)
4137 if (method->is_inflated && (method->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
4138 MonoMethodInflated *imethod = (MonoMethodInflated*)method;
4139 if (imethod->declaring->is_generic)
4140 return imethod->declaring->slot;
4142 return method->slot;
4146 mono_class_verify_vtable (MonoClass *klass)
4149 char *full_name = mono_type_full_name (&klass->byval_arg);
4151 printf ("*** Verifying VTable of class '%s' \n", full_name);
4155 if (!klass->methods)
4158 for (i = 0; i < klass->method.count; ++i) {
4159 MonoMethod *cm = klass->methods [i];
4162 if (!(cm->flags & METHOD_ATTRIBUTE_VIRTUAL))
4166 full_name = mono_method_full_name (cm, TRUE);
4168 slot = mono_method_try_get_vtable_index (cm);
4170 if (slot >= klass->vtable_size) {
4171 printf ("\tInvalid method %s at index %d with vtable of length %d\n", full_name, slot, klass->vtable_size);
4175 if (slot >= 0 && klass->vtable [slot] != cm && (klass->vtable [slot])) {
4176 char *other_name = klass->vtable [slot] ? mono_method_full_name (klass->vtable [slot], TRUE) : g_strdup ("[null value]");
4177 printf ("\tMethod %s has slot %d but vtable has %s on it\n", full_name, slot, other_name);
4178 g_free (other_name);
4181 printf ("\tVirtual method %s does n't have an assigned slot\n", full_name);
4188 print_unimplemented_interface_method_info (MonoClass *klass, MonoClass *ic, MonoMethod *im, int im_slot, MonoMethod **overrides, int onum) {
4190 char *method_signature;
4193 for (index = 0; index < onum; ++index) {
4194 mono_trace_warning (MONO_TRACE_TYPE, " at slot %d: %s (%d) overrides %s (%d)\n", im_slot, overrides [index*2+1]->name,
4195 overrides [index*2+1]->slot, overrides [index*2]->name, overrides [index*2]->slot);
4197 method_signature = mono_signature_get_desc (mono_method_signature (im), FALSE);
4198 type_name = mono_type_full_name (&klass->byval_arg);
4199 mono_trace_warning (MONO_TRACE_TYPE, "no implementation for interface method %s::%s(%s) in class %s\n",
4200 mono_type_get_name (&ic->byval_arg), im->name, method_signature, type_name);
4201 g_free (method_signature);
4203 mono_class_setup_methods (klass);
4204 if (mono_class_has_failure (klass)) {
4205 char *name = mono_type_get_full_name (klass);
4206 mono_trace_warning (MONO_TRACE_TYPE, "CLASS %s failed to resolve methods\n", name);
4210 for (index = 0; index < klass->method.count; ++index) {
4211 MonoMethod *cm = klass->methods [index];
4212 method_signature = mono_signature_get_desc (mono_method_signature (cm), TRUE);
4214 mono_trace_warning (MONO_TRACE_TYPE, "METHOD %s(%s)\n", cm->name, method_signature);
4215 g_free (method_signature);
4220 mono_method_get_method_definition (MonoMethod *method)
4222 while (method->is_inflated)
4223 method = ((MonoMethodInflated*)method)->declaring;
4228 verify_class_overrides (MonoClass *klass, MonoMethod **overrides, int onum)
4232 for (i = 0; i < onum; ++i) {
4233 MonoMethod *decl = overrides [i * 2];
4234 MonoMethod *body = overrides [i * 2 + 1];
4236 if (mono_class_get_generic_type_definition (body->klass) != mono_class_get_generic_type_definition (klass)) {
4237 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Method belongs to a different class than the declared one"));
4241 if (!(body->flags & METHOD_ATTRIBUTE_VIRTUAL) || (body->flags & METHOD_ATTRIBUTE_STATIC)) {
4242 if (body->flags & METHOD_ATTRIBUTE_STATIC)
4243 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Method must not be static to override a base type"));
4245 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Method must be virtual to override a base type"));
4249 if (!(decl->flags & METHOD_ATTRIBUTE_VIRTUAL) || (decl->flags & METHOD_ATTRIBUTE_STATIC)) {
4250 if (body->flags & METHOD_ATTRIBUTE_STATIC)
4251 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Cannot override a static method in a base type"));
4253 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Cannot override a non virtual method in a base type"));
4257 if (!mono_class_is_assignable_from_slow (decl->klass, klass)) {
4258 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Method overrides a class or interface that is not extended or implemented by this type"));
4262 body = mono_method_get_method_definition (body);
4263 decl = mono_method_get_method_definition (decl);
4265 if (is_wcf_hack_disabled () && !mono_method_can_access_method_full (body, decl, NULL)) {
4266 char *body_name = mono_method_full_name (body, TRUE);
4267 char *decl_name = mono_method_full_name (decl, TRUE);
4268 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Method %s overrides method '%s' which is not accessible", body_name, decl_name));
4278 mono_class_need_stelemref_method (MonoClass *klass)
4280 return klass->rank == 1 && MONO_TYPE_IS_REFERENCE (&klass->element_class->byval_arg);
4284 * LOCKING: this is supposed to be called with the loader lock held.
4287 mono_class_setup_vtable_general (MonoClass *klass, MonoMethod **overrides, int onum, GList *in_setup)
4291 MonoMethod **vtable;
4292 int i, max_vtsize = 0, max_iid, cur_slot = 0;
4293 GPtrArray *ifaces = NULL;
4294 GHashTable *override_map = NULL;
4296 #if (DEBUG_INTERFACE_VTABLE_CODE|TRACE_INTERFACE_VTABLE_CODE)
4297 int first_non_interface_slot;
4299 GSList *virt_methods = NULL, *l;
4300 int stelemref_slot = 0;
4305 if (overrides && !verify_class_overrides (klass, overrides, onum))
4308 ifaces = mono_class_get_implemented_interfaces (klass, &error);
4309 if (!mono_error_ok (&error)) {
4310 char *name = mono_type_get_full_name (klass);
4311 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Could not resolve %s interfaces due to %s", name, mono_error_get_message (&error)));
4313 mono_error_cleanup (&error);
4315 } else if (ifaces) {
4316 for (i = 0; i < ifaces->len; i++) {
4317 MonoClass *ic = (MonoClass *)g_ptr_array_index (ifaces, i);
4318 max_vtsize += ic->method.count;
4320 g_ptr_array_free (ifaces, TRUE);
4324 if (klass->parent) {
4325 mono_class_init (klass->parent);
4326 mono_class_setup_vtable_full (klass->parent, in_setup);
4328 if (mono_class_has_failure (klass->parent)) {
4329 char *name = mono_type_get_full_name (klass->parent);
4330 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Parent %s failed to load", name));
4335 max_vtsize += klass->parent->vtable_size;
4336 cur_slot = klass->parent->vtable_size;
4339 max_vtsize += klass->method.count;
4341 /*Array have a slot for stelemref*/
4342 if (mono_class_need_stelemref_method (klass)) {
4343 stelemref_slot = cur_slot;
4348 vtable = (MonoMethod **)alloca (sizeof (gpointer) * max_vtsize);
4349 memset (vtable, 0, sizeof (gpointer) * max_vtsize);
4351 /* printf ("METAINIT %s.%s\n", klass->name_space, klass->name); */
4353 cur_slot = setup_interface_offsets (klass, cur_slot, TRUE);
4354 if (cur_slot == -1) /*setup_interface_offsets fails the type.*/
4357 max_iid = klass->max_interface_id;
4358 DEBUG_INTERFACE_VTABLE (first_non_interface_slot = cur_slot);
4360 /* Optimized version for generic instances */
4361 if (klass->generic_class) {
4363 MonoClass *gklass = klass->generic_class->container_class;
4366 mono_class_setup_vtable_full (gklass, in_setup);
4367 if (mono_class_has_failure (gklass)) {
4368 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
4372 tmp = (MonoMethod **)mono_class_alloc0 (klass, sizeof (gpointer) * gklass->vtable_size);
4373 klass->vtable_size = gklass->vtable_size;
4374 for (i = 0; i < gklass->vtable_size; ++i)
4375 if (gklass->vtable [i]) {
4376 MonoMethod *inflated = mono_class_inflate_generic_method_full_checked (gklass->vtable [i], klass, mono_class_get_context (klass), &error);
4377 if (!mono_error_ok (&error)) {
4378 char *err_msg = g_strdup_printf ("Could not inflate method due to %s", mono_error_get_message (&error));
4379 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, err_msg);
4381 mono_error_cleanup (&error);
4385 tmp [i]->slot = gklass->vtable [i]->slot;
4387 mono_memory_barrier ();
4388 klass->vtable = tmp;
4390 /* Have to set method->slot for abstract virtual methods */
4391 if (klass->methods && gklass->methods) {
4392 for (i = 0; i < klass->method.count; ++i)
4393 if (klass->methods [i]->slot == -1)
4394 klass->methods [i]->slot = gklass->methods [i]->slot;
4400 if (klass->parent && klass->parent->vtable_size) {
4401 MonoClass *parent = klass->parent;
4404 memcpy (vtable, parent->vtable, sizeof (gpointer) * parent->vtable_size);
4406 // Also inherit parent interface vtables, just as a starting point.
4407 // This is needed otherwise bug-77127.exe fails when the property methods
4408 // have different names in the iterface and the class, because for child
4409 // classes the ".override" information is not used anymore.
4410 for (i = 0; i < parent->interface_offsets_count; i++) {
4411 MonoClass *parent_interface = parent->interfaces_packed [i];
4412 int interface_offset = mono_class_interface_offset (klass, parent_interface);
4413 /*FIXME this is now dead code as this condition will never hold true.
4414 Since interface offsets are inherited then the offset of an interface implemented
4415 by a parent will never be the out of it's vtable boundary.
4417 if (interface_offset >= parent->vtable_size) {
4418 int parent_interface_offset = mono_class_interface_offset (parent, parent_interface);
4421 mono_class_setup_methods (parent_interface); /*FIXME Just kill this whole chunk of dead code*/
4422 TRACE_INTERFACE_VTABLE (printf (" +++ Inheriting interface %s.%s\n", parent_interface->name_space, parent_interface->name));
4423 for (j = 0; j < parent_interface->method.count && !mono_class_has_failure (klass); j++) {
4424 vtable [interface_offset + j] = parent->vtable [parent_interface_offset + j];
4425 TRACE_INTERFACE_VTABLE (printf (" --- Inheriting: [%03d][(%03d)+(%03d)] => [%03d][(%03d)+(%03d)]\n",
4426 parent_interface_offset + j, parent_interface_offset, j,
4427 interface_offset + j, interface_offset, j));
4434 /*Array have a slot for stelemref*/
4435 if (mono_class_need_stelemref_method (klass)) {
4436 MonoMethod *method = mono_marshal_get_virtual_stelemref (klass);
4438 method->slot = stelemref_slot;
4440 g_assert (method->slot == stelemref_slot);
4442 vtable [stelemref_slot] = method;
4445 TRACE_INTERFACE_VTABLE (print_vtable_full (klass, vtable, cur_slot, first_non_interface_slot, "AFTER INHERITING PARENT VTABLE", TRUE));
4446 /* override interface methods */
4447 for (i = 0; i < onum; i++) {
4448 MonoMethod *decl = overrides [i*2];
4449 if (MONO_CLASS_IS_INTERFACE (decl->klass)) {
4451 dslot = mono_method_get_vtable_slot (decl);
4453 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
4457 dslot += mono_class_interface_offset (klass, decl->klass);
4458 vtable [dslot] = overrides [i*2 + 1];
4459 vtable [dslot]->slot = dslot;
4461 override_map = g_hash_table_new (mono_aligned_addr_hash, NULL);
4463 g_hash_table_insert (override_map, overrides [i * 2], overrides [i * 2 + 1]);
4465 if (mono_security_core_clr_enabled ())
4466 mono_security_core_clr_check_override (klass, vtable [dslot], decl);
4469 TRACE_INTERFACE_VTABLE (print_overrides (override_map, "AFTER OVERRIDING INTERFACE METHODS"));
4470 TRACE_INTERFACE_VTABLE (print_vtable_full (klass, vtable, cur_slot, first_non_interface_slot, "AFTER OVERRIDING INTERFACE METHODS", FALSE));
4473 * Create a list of virtual methods to avoid calling
4474 * mono_class_get_virtual_methods () which is slow because of the metadata
4478 gpointer iter = NULL;
4481 virt_methods = NULL;
4482 while ((cm = mono_class_get_virtual_methods (klass, &iter))) {
4483 virt_methods = g_slist_prepend (virt_methods, cm);
4485 if (mono_class_has_failure (klass))
4489 // Loop on all implemented interfaces...
4490 for (i = 0; i < klass->interface_offsets_count; i++) {
4491 MonoClass *parent = klass->parent;
4493 gboolean interface_is_explicitly_implemented_by_class;
4496 ic = klass->interfaces_packed [i];
4497 ic_offset = mono_class_interface_offset (klass, ic);
4499 mono_class_setup_methods (ic);
4500 if (mono_class_has_failure (ic))
4503 // Check if this interface is explicitly implemented (instead of just inherited)
4504 if (parent != NULL) {
4505 int implemented_interfaces_index;
4506 interface_is_explicitly_implemented_by_class = FALSE;
4507 for (implemented_interfaces_index = 0; implemented_interfaces_index < klass->interface_count; implemented_interfaces_index++) {
4508 if (ic == klass->interfaces [implemented_interfaces_index]) {
4509 interface_is_explicitly_implemented_by_class = TRUE;
4514 interface_is_explicitly_implemented_by_class = TRUE;
4517 // Loop on all interface methods...
4518 for (im_index = 0; im_index < ic->method.count; im_index++) {
4519 MonoMethod *im = ic->methods [im_index];
4520 int im_slot = ic_offset + im->slot;
4521 MonoMethod *override_im = (override_map != NULL) ? (MonoMethod *)g_hash_table_lookup (override_map, im) : NULL;
4523 if (im->flags & METHOD_ATTRIBUTE_STATIC)
4526 TRACE_INTERFACE_VTABLE (printf ("\tchecking iface method %s\n", mono_method_full_name (im,1)));
4528 // If there is an explicit implementation, just use it right away,
4529 // otherwise look for a matching method
4530 if (override_im == NULL) {
4534 // First look for a suitable method among the class methods
4535 for (l = virt_methods; l; l = l->next) {
4536 cm = (MonoMethod *)l->data;
4537 TRACE_INTERFACE_VTABLE (printf (" For slot %d ('%s'.'%s':'%s'), trying method '%s'.'%s':'%s'... [EXPLICIT IMPLEMENTATION = %d][SLOT IS NULL = %d]", im_slot, ic->name_space, ic->name, im->name, cm->klass->name_space, cm->klass->name, cm->name, interface_is_explicitly_implemented_by_class, (vtable [im_slot] == NULL)));
4538 if (check_interface_method_override (klass, im, cm, TRUE, interface_is_explicitly_implemented_by_class, (vtable [im_slot] == NULL))) {
4539 TRACE_INTERFACE_VTABLE (printf ("[check ok]: ASSIGNING"));
4540 vtable [im_slot] = cm;
4541 /* Why do we need this? */
4546 TRACE_INTERFACE_VTABLE (printf ("\n"));
4547 if (mono_class_has_failure (klass)) /*Might be set by check_interface_method_override*/
4551 // If the slot is still empty, look in all the inherited virtual methods...
4552 if ((vtable [im_slot] == NULL) && klass->parent != NULL) {
4553 MonoClass *parent = klass->parent;
4554 // Reverse order, so that last added methods are preferred
4555 for (cm_index = parent->vtable_size - 1; cm_index >= 0; cm_index--) {
4556 MonoMethod *cm = parent->vtable [cm_index];
4558 TRACE_INTERFACE_VTABLE ((cm != NULL) && printf (" For slot %d ('%s'.'%s':'%s'), trying (ancestor) method '%s'.'%s':'%s'... ", im_slot, ic->name_space, ic->name, im->name, cm->klass->name_space, cm->klass->name, cm->name));
4559 if ((cm != NULL) && check_interface_method_override (klass, im, cm, FALSE, FALSE, TRUE)) {
4560 TRACE_INTERFACE_VTABLE (printf ("[everything ok]: ASSIGNING"));
4561 vtable [im_slot] = cm;
4562 /* Why do we need this? */
4568 if (mono_class_has_failure (klass)) /*Might be set by check_interface_method_override*/
4570 TRACE_INTERFACE_VTABLE ((cm != NULL) && printf ("\n"));
4574 g_assert (vtable [im_slot] == override_im);
4579 // If the class is not abstract, check that all its interface slots are full.
4580 // The check is done here and not directly at the end of the loop above because
4581 // it can happen (for injected generic array interfaces) that the same slot is
4582 // processed multiple times (those interfaces have overlapping slots), and it
4583 // will not always be the first pass the one that fills the slot.
4584 if (! (klass->flags & TYPE_ATTRIBUTE_ABSTRACT)) {
4585 for (i = 0; i < klass->interface_offsets_count; i++) {
4589 ic = klass->interfaces_packed [i];
4590 ic_offset = mono_class_interface_offset (klass, ic);
4592 for (im_index = 0; im_index < ic->method.count; im_index++) {
4593 MonoMethod *im = ic->methods [im_index];
4594 int im_slot = ic_offset + im->slot;
4596 if (im->flags & METHOD_ATTRIBUTE_STATIC)
4599 TRACE_INTERFACE_VTABLE (printf (" [class is not abstract, checking slot %d for interface '%s'.'%s', method %s, slot check is %d]\n",
4600 im_slot, ic->name_space, ic->name, im->name, (vtable [im_slot] == NULL)));
4601 if (vtable [im_slot] == NULL) {
4602 print_unimplemented_interface_method_info (klass, ic, im, im_slot, overrides, onum);
4609 TRACE_INTERFACE_VTABLE (print_vtable_full (klass, vtable, cur_slot, first_non_interface_slot, "AFTER SETTING UP INTERFACE METHODS", FALSE));
4610 for (l = virt_methods; l; l = l->next) {
4611 cm = (MonoMethod *)l->data;
4613 * If the method is REUSE_SLOT, we must check in the
4614 * base class for a method to override.
4616 if (!(cm->flags & METHOD_ATTRIBUTE_NEW_SLOT)) {
4618 for (k = klass->parent; k ; k = k->parent) {
4623 while ((m1 = mono_class_get_virtual_methods (k, &k_iter))) {
4624 MonoMethodSignature *cmsig, *m1sig;
4626 cmsig = mono_method_signature (cm);
4627 m1sig = mono_method_signature (m1);
4629 if (!cmsig || !m1sig) {
4630 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
4634 if (!strcmp(cm->name, m1->name) &&
4635 mono_metadata_signature_equal (cmsig, m1sig)) {
4637 if (mono_security_core_clr_enabled ())
4638 mono_security_core_clr_check_override (klass, cm, m1);
4640 slot = mono_method_get_vtable_slot (m1);
4644 if (is_wcf_hack_disabled () && !mono_method_can_access_method_full (cm, m1, NULL)) {
4645 char *body_name = mono_method_full_name (cm, TRUE);
4646 char *decl_name = mono_method_full_name (m1, TRUE);
4647 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Method %s overrides method '%s' which is not accessible", body_name, decl_name));
4653 g_assert (cm->slot < max_vtsize);
4655 override_map = g_hash_table_new (mono_aligned_addr_hash, NULL);
4656 TRACE_INTERFACE_VTABLE (printf ("adding iface override from %s [%p] to %s [%p]\n",
4657 mono_method_full_name (m1, 1), m1,
4658 mono_method_full_name (cm, 1), cm));
4659 g_hash_table_insert (override_map, m1, cm);
4663 if (mono_class_has_failure (k))
4673 /*Non final newslot methods must be given a non-interface vtable slot*/
4674 if ((cm->flags & METHOD_ATTRIBUTE_NEW_SLOT) && !(cm->flags & METHOD_ATTRIBUTE_FINAL) && cm->slot >= 0)
4678 cm->slot = cur_slot++;
4680 if (!(cm->flags & METHOD_ATTRIBUTE_ABSTRACT))
4681 vtable [cm->slot] = cm;
4684 /* override non interface methods */
4685 for (i = 0; i < onum; i++) {
4686 MonoMethod *decl = overrides [i*2];
4687 if (!MONO_CLASS_IS_INTERFACE (decl->klass)) {
4688 g_assert (decl->slot != -1);
4689 vtable [decl->slot] = overrides [i*2 + 1];
4690 overrides [i * 2 + 1]->slot = decl->slot;
4692 override_map = g_hash_table_new (mono_aligned_addr_hash, NULL);
4693 TRACE_INTERFACE_VTABLE (printf ("adding explicit override from %s [%p] to %s [%p]\n",
4694 mono_method_full_name (decl, 1), decl,
4695 mono_method_full_name (overrides [i * 2 + 1], 1), overrides [i * 2 + 1]));
4696 g_hash_table_insert (override_map, decl, overrides [i * 2 + 1]);
4698 if (mono_security_core_clr_enabled ())
4699 mono_security_core_clr_check_override (klass, vtable [decl->slot], decl);
4704 * If a method occupies more than one place in the vtable, and it is
4705 * overriden, then change the other occurances too.
4710 for (i = 0; i < max_vtsize; ++i)
4712 TRACE_INTERFACE_VTABLE (printf ("checking slot %d method %s[%p] for overrides\n", i, mono_method_full_name (vtable [i], 1), vtable [i]));
4714 cm = (MonoMethod *)g_hash_table_lookup (override_map, vtable [i]);
4719 g_hash_table_destroy (override_map);
4720 override_map = NULL;
4723 g_slist_free (virt_methods);
4724 virt_methods = NULL;
4726 /* Ensure that all vtable slots are filled with concrete instance methods */
4727 if (!(klass->flags & TYPE_ATTRIBUTE_ABSTRACT)) {
4728 for (i = 0; i < cur_slot; ++i) {
4729 if (vtable [i] == NULL || (vtable [i]->flags & (METHOD_ATTRIBUTE_ABSTRACT | METHOD_ATTRIBUTE_STATIC))) {
4730 char *type_name = mono_type_get_full_name (klass);
4731 char *method_name = vtable [i] ? mono_method_full_name (vtable [i], TRUE) : g_strdup ("none");
4732 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Type %s has invalid vtable method slot %d with method %s", type_name, i, method_name));
4734 g_free (method_name);
4740 if (klass->generic_class) {
4741 MonoClass *gklass = klass->generic_class->container_class;
4743 mono_class_init (gklass);
4745 klass->vtable_size = MAX (gklass->vtable_size, cur_slot);
4747 /* Check that the vtable_size value computed in mono_class_init () is correct */
4748 if (klass->vtable_size)
4749 g_assert (cur_slot == klass->vtable_size);
4750 klass->vtable_size = cur_slot;
4753 /* Try to share the vtable with our parent. */
4754 if (klass->parent && (klass->parent->vtable_size == klass->vtable_size) && (memcmp (klass->parent->vtable, vtable, sizeof (gpointer) * klass->vtable_size) == 0)) {
4755 mono_memory_barrier ();
4756 klass->vtable = klass->parent->vtable;
4758 MonoMethod **tmp = (MonoMethod **)mono_class_alloc0 (klass, sizeof (gpointer) * klass->vtable_size);
4759 memcpy (tmp, vtable, sizeof (gpointer) * klass->vtable_size);
4760 mono_memory_barrier ();
4761 klass->vtable = tmp;
4764 DEBUG_INTERFACE_VTABLE (print_vtable_full (klass, klass->vtable, klass->vtable_size, first_non_interface_slot, "FINALLY", FALSE));
4765 if (mono_print_vtable) {
4768 print_implemented_interfaces (klass);
4770 for (i = 0; i <= max_iid; i++)
4771 if (MONO_CLASS_IMPLEMENTS_INTERFACE (klass, i))
4774 printf ("VTable %s (vtable entries = %d, interfaces = %d)\n", mono_type_full_name (&klass->byval_arg),
4775 klass->vtable_size, icount);
4777 for (i = 0; i < cur_slot; ++i) {
4782 printf (" slot assigned: %03d, slot index: %03d %s\n", i, cm->slot,
4783 mono_method_full_name (cm, TRUE));
4789 printf ("Interfaces %s.%s (max_iid = %d)\n", klass->name_space,
4790 klass->name, max_iid);
4792 for (i = 0; i < klass->interface_count; i++) {
4793 ic = klass->interfaces [i];
4794 printf (" slot offset: %03d, method count: %03d, iid: %03d %s\n",
4795 mono_class_interface_offset (klass, ic),
4796 count_virtual_methods (ic), ic->interface_id, mono_type_full_name (&ic->byval_arg));
4799 for (k = klass->parent; k ; k = k->parent) {
4800 for (i = 0; i < k->interface_count; i++) {
4801 ic = k->interfaces [i];
4802 printf (" parent slot offset: %03d, method count: %03d, iid: %03d %s\n",
4803 mono_class_interface_offset (klass, ic),
4804 count_virtual_methods (ic), ic->interface_id, mono_type_full_name (&ic->byval_arg));
4810 VERIFY_INTERFACE_VTABLE (mono_class_verify_vtable (klass));
4815 char *name = mono_type_get_full_name (klass);
4816 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("VTable setup of type %s failed", name));
4819 g_hash_table_destroy (override_map);
4821 g_slist_free (virt_methods);
4826 * mono_method_get_vtable_slot:
4828 * Returns method->slot, computing it if neccesary. Return -1 on failure.
4829 * LOCKING: Acquires the loader lock.
4831 * FIXME Use proper MonoError machinery here.
4834 mono_method_get_vtable_slot (MonoMethod *method)
4836 if (method->slot == -1) {
4837 mono_class_setup_vtable (method->klass);
4838 if (mono_class_has_failure (method->klass))
4840 if (method->slot == -1) {
4844 if (!method->klass->generic_class) {
4845 g_assert (method->is_inflated);
4846 return mono_method_get_vtable_slot (((MonoMethodInflated*)method)->declaring);
4849 /* This can happen for abstract methods of generic instances due to the shortcut code in mono_class_setup_vtable_general (). */
4850 g_assert (method->klass->generic_class);
4851 gklass = method->klass->generic_class->container_class;
4852 mono_class_setup_methods (method->klass);
4853 g_assert (method->klass->methods);
4854 for (i = 0; i < method->klass->method.count; ++i) {
4855 if (method->klass->methods [i] == method)
4858 g_assert (i < method->klass->method.count);
4859 g_assert (gklass->methods);
4860 method->slot = gklass->methods [i]->slot;
4862 g_assert (method->slot != -1);
4864 return method->slot;
4868 * mono_method_get_vtable_index:
4871 * Returns the index into the runtime vtable to access the method or,
4872 * in the case of a virtual generic method, the virtual generic method
4873 * thunk. Returns -1 on failure.
4875 * FIXME Use proper MonoError machinery here.
4878 mono_method_get_vtable_index (MonoMethod *method)
4880 if (method->is_inflated && (method->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
4881 MonoMethodInflated *imethod = (MonoMethodInflated*)method;
4882 if (imethod->declaring->is_generic)
4883 return mono_method_get_vtable_slot (imethod->declaring);
4885 return mono_method_get_vtable_slot (method);
4888 static MonoMethod *default_ghc = NULL;
4889 static MonoMethod *default_finalize = NULL;
4890 static int finalize_slot = -1;
4891 static int ghc_slot = -1;
4894 initialize_object_slots (MonoClass *klass)
4899 if (klass == mono_defaults.object_class) {
4900 mono_class_setup_vtable (klass);
4901 for (i = 0; i < klass->vtable_size; ++i) {
4902 MonoMethod *cm = klass->vtable [i];
4904 if (!strcmp (cm->name, "GetHashCode"))
4906 else if (!strcmp (cm->name, "Finalize"))
4910 g_assert (ghc_slot > 0);
4911 default_ghc = klass->vtable [ghc_slot];
4913 g_assert (finalize_slot > 0);
4914 default_finalize = klass->vtable [finalize_slot];
4919 MonoMethod *array_method;
4921 } GenericArrayMethodInfo;
4923 static int generic_array_method_num = 0;
4924 static GenericArrayMethodInfo *generic_array_method_info = NULL;
4927 generic_array_methods (MonoClass *klass)
4929 int i, count_generic = 0;
4930 GList *list = NULL, *tmp;
4931 if (generic_array_method_num)
4932 return generic_array_method_num;
4933 mono_class_setup_methods (klass->parent); /*This is setting up System.Array*/
4934 g_assert (!mono_class_has_failure (klass->parent)); /*So hitting this assert is a huge problem*/
4935 for (i = 0; i < klass->parent->method.count; i++) {
4936 MonoMethod *m = klass->parent->methods [i];
4937 if (!strncmp (m->name, "InternalArray__", 15)) {
4939 list = g_list_prepend (list, m);
4942 list = g_list_reverse (list);
4943 generic_array_method_info = (GenericArrayMethodInfo *)mono_image_alloc (mono_defaults.corlib, sizeof (GenericArrayMethodInfo) * count_generic);
4945 for (tmp = list; tmp; tmp = tmp->next) {
4946 const char *mname, *iname;
4948 MonoMethod *m = (MonoMethod *)tmp->data;
4949 const char *ireadonlylist_prefix = "InternalArray__IReadOnlyList_";
4950 const char *ireadonlycollection_prefix = "InternalArray__IReadOnlyCollection_";
4952 generic_array_method_info [i].array_method = m;
4953 if (!strncmp (m->name, "InternalArray__ICollection_", 27)) {
4954 iname = "System.Collections.Generic.ICollection`1.";
4955 mname = m->name + 27;
4956 } else if (!strncmp (m->name, "InternalArray__IEnumerable_", 27)) {
4957 iname = "System.Collections.Generic.IEnumerable`1.";
4958 mname = m->name + 27;
4959 } else if (!strncmp (m->name, ireadonlylist_prefix, strlen (ireadonlylist_prefix))) {
4960 iname = "System.Collections.Generic.IReadOnlyList`1.";
4961 mname = m->name + strlen (ireadonlylist_prefix);
4962 } else if (!strncmp (m->name, ireadonlycollection_prefix, strlen (ireadonlycollection_prefix))) {
4963 iname = "System.Collections.Generic.IReadOnlyCollection`1.";
4964 mname = m->name + strlen (ireadonlycollection_prefix);
4965 } else if (!strncmp (m->name, "InternalArray__", 15)) {
4966 iname = "System.Collections.Generic.IList`1.";
4967 mname = m->name + 15;
4969 g_assert_not_reached ();
4972 name = (gchar *)mono_image_alloc (mono_defaults.corlib, strlen (iname) + strlen (mname) + 1);
4973 strcpy (name, iname);
4974 strcpy (name + strlen (iname), mname);
4975 generic_array_method_info [i].name = name;
4978 /*g_print ("array generic methods: %d\n", count_generic);*/
4980 generic_array_method_num = count_generic;
4982 return generic_array_method_num;
4986 setup_generic_array_ifaces (MonoClass *klass, MonoClass *iface, MonoMethod **methods, int pos)
4988 MonoGenericContext tmp_context;
4991 tmp_context.class_inst = NULL;
4992 tmp_context.method_inst = iface->generic_class->context.class_inst;
4993 //g_print ("setting up array interface: %s\n", mono_type_get_name_full (&iface->byval_arg, 0));
4995 for (i = 0; i < generic_array_method_num; i++) {
4997 MonoMethod *m = generic_array_method_info [i].array_method;
4998 MonoMethod *inflated;
5000 inflated = mono_class_inflate_generic_method_checked (m, &tmp_context, &error);
5001 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
5002 methods [pos++] = mono_marshal_get_generic_array_helper (klass, iface, generic_array_method_info [i].name, inflated);
5007 concat_two_strings_with_zero (MonoImage *image, const char *s1, const char *s2)
5009 int null_length = strlen ("(null)");
5010 int len = (s1 ? strlen (s1) : null_length) + (s2 ? strlen (s2) : null_length) + 2;
5011 char *s = (char *)mono_image_alloc (image, len);
5014 result = g_snprintf (s, len, "%s%c%s", s1 ? s1 : "(null)", '\0', s2 ? s2 : "(null)");
5015 g_assert (result == len - 1);
5021 set_failure_from_loader_error (MonoClass *klass, MonoLoaderError *error)
5023 gpointer exception_data = NULL;
5025 switch (error->exception_type) {
5026 case MONO_EXCEPTION_TYPE_LOAD:
5027 exception_data = concat_two_strings_with_zero (klass->image, error->class_name, error->assembly_name);
5030 case MONO_EXCEPTION_MISSING_METHOD:
5031 exception_data = concat_two_strings_with_zero (klass->image, error->class_name, error->member_name);
5034 case MONO_EXCEPTION_MISSING_FIELD: {
5035 const char *name_space = error->klass->name_space ? error->klass->name_space : NULL;
5036 const char *class_name;
5039 class_name = g_strdup_printf ("%s.%s", name_space, error->klass->name);
5041 class_name = error->klass->name;
5043 exception_data = concat_two_strings_with_zero (klass->image, class_name, error->member_name);
5046 g_free ((void*)class_name);
5050 case MONO_EXCEPTION_FILE_NOT_FOUND: {
5053 if (error->ref_only)
5054 msg = "Cannot resolve dependency to assembly '%s' because it has not been preloaded. When using the ReflectionOnly APIs, dependent assemblies must be pre-loaded or loaded on demand through the ReflectionOnlyAssemblyResolve event.";
5056 msg = "Could not load file or assembly '%s' or one of its dependencies.";
5058 exception_data = concat_two_strings_with_zero (klass->image, msg, error->assembly_name);
5062 case MONO_EXCEPTION_BAD_IMAGE:
5063 exception_data = error->msg;
5067 g_assert_not_reached ();
5070 mono_class_set_failure (klass, error->exception_type, exception_data);
5075 * @class: the class to initialize
5077 * Compute the instance_size, class_size and other infos that cannot be
5078 * computed at mono_class_get() time. Also compute vtable_size if possible.
5079 * Returns TRUE on success or FALSE if there was a problem in loading
5080 * the type (incorrect assemblies, missing assemblies, methods, etc).
5082 * LOCKING: Acquires the loader lock.
5085 mono_class_init (MonoClass *klass)
5088 MonoCachedClassInfo cached_info;
5089 gboolean has_cached_info;
5093 /* Double-checking locking pattern */
5094 if (klass->inited || mono_class_has_failure (klass))
5095 return !mono_class_has_failure (klass);
5097 /*g_print ("Init class %s\n", mono_type_get_full_name (klass));*/
5099 /* We do everything inside the lock to prevent races */
5100 mono_loader_lock ();
5102 if (klass->inited || mono_class_has_failure (klass)) {
5103 mono_loader_unlock ();
5104 /* Somebody might have gotten in before us */
5105 return !mono_class_has_failure (klass);
5108 if (klass->init_pending) {
5109 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Recursive type definition detected"));
5113 klass->init_pending = 1;
5115 if (mono_verifier_is_enabled_for_class (klass) && !mono_verifier_verify_class (klass)) {
5116 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, concat_two_strings_with_zero (klass->image, klass->name, klass->image->assembly_name));
5121 if (klass->byval_arg.type == MONO_TYPE_ARRAY || klass->byval_arg.type == MONO_TYPE_SZARRAY) {
5122 MonoClass *element_class = klass->element_class;
5123 if (!element_class->inited)
5124 mono_class_init (element_class);
5125 if (mono_class_has_failure (element_class)) {
5126 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
5131 mono_stats.initialized_class_count++;
5133 if (klass->generic_class && !klass->generic_class->is_dynamic) {
5134 MonoClass *gklass = klass->generic_class->container_class;
5136 mono_stats.generic_class_count++;
5138 klass->method = gklass->method;
5139 klass->field = gklass->field;
5141 mono_class_init (gklass);
5142 // FIXME: Why is this needed ?
5143 if (!mono_class_has_failure (gklass))
5144 mono_class_setup_methods (gklass);
5145 if (mono_class_has_failure (gklass)) {
5146 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Generic Type Defintion failed to init"));
5150 if (MONO_CLASS_IS_INTERFACE (klass))
5151 klass->interface_id = mono_get_unique_iid (klass);
5154 if (klass->parent && !klass->parent->inited)
5155 mono_class_init (klass->parent);
5157 has_cached_info = mono_class_get_cached_class_info (klass, &cached_info);
5159 if (klass->generic_class || image_is_dynamic (klass->image) || !klass->type_token || (has_cached_info && !cached_info.has_nested_classes))
5160 klass->nested_classes_inited = TRUE;
5163 * Computes the size used by the fields, and their locations
5165 if (has_cached_info) {
5166 klass->instance_size = cached_info.instance_size;
5167 klass->sizes.class_size = cached_info.class_size;
5168 klass->packing_size = cached_info.packing_size;
5169 klass->min_align = cached_info.min_align;
5170 klass->blittable = cached_info.blittable;
5171 klass->has_references = cached_info.has_references;
5172 klass->has_static_refs = cached_info.has_static_refs;
5173 klass->no_special_static_fields = cached_info.no_special_static_fields;
5176 if (!klass->size_inited){
5177 mono_class_setup_fields (klass);
5178 if (mono_class_has_failure (klass) || mono_loader_get_last_error ())
5182 /* Initialize arrays */
5184 klass->method.count = 3 + (klass->rank > 1? 2: 1);
5186 if (klass->interface_count) {
5187 int count_generic = generic_array_methods (klass);
5188 klass->method.count += klass->interface_count * count_generic;
5192 mono_class_setup_supertypes (klass);
5195 initialize_object_slots (klass);
5198 * Initialize the rest of the data without creating a generic vtable if possible.
5199 * If possible, also compute vtable_size, so mono_class_create_runtime_vtable () can
5200 * also avoid computing a generic vtable.
5202 if (has_cached_info) {
5204 klass->vtable_size = cached_info.vtable_size;
5205 klass->has_finalize = cached_info.has_finalize;
5206 klass->has_finalize_inited = TRUE;
5207 klass->ghcimpl = cached_info.ghcimpl;
5208 klass->has_cctor = cached_info.has_cctor;
5209 } else if (klass->rank == 1 && klass->byval_arg.type == MONO_TYPE_SZARRAY) {
5210 /* SZARRAY can have 2 vtable layouts, with and without the stelemref method.
5211 * The first slot if for array with.
5213 static int szarray_vtable_size[2] = { 0 };
5215 int slot = MONO_TYPE_IS_REFERENCE (&klass->element_class->byval_arg) ? 0 : 1;
5218 if (!szarray_vtable_size [slot]) {
5219 mono_class_setup_vtable (klass);
5220 szarray_vtable_size [slot] = klass->vtable_size;
5222 klass->vtable_size = szarray_vtable_size[slot];
5224 } else if (klass->generic_class && !MONO_CLASS_IS_INTERFACE (klass)) {
5225 MonoClass *gklass = klass->generic_class->container_class;
5227 /* Generic instance case */
5228 klass->ghcimpl = gklass->ghcimpl;
5229 klass->has_cctor = gklass->has_cctor;
5231 mono_class_setup_vtable (gklass);
5232 if (mono_class_has_failure (gklass)) {
5233 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
5237 klass->vtable_size = gklass->vtable_size;
5241 /* ghcimpl is not currently used
5243 if (klass->parent) {
5244 MonoMethod *cmethod = klass->vtable [ghc_slot];
5245 if (cmethod->is_inflated)
5246 cmethod = ((MonoMethodInflated*)cmethod)->declaring;
5247 if (cmethod == default_ghc) {
5253 /* C# doesn't allow interfaces to have cctors */
5254 if (!MONO_CLASS_IS_INTERFACE (klass) || klass->image != mono_defaults.corlib) {
5255 MonoMethod *cmethod = NULL;
5257 if (klass->type_token && !image_is_dynamic(klass->image)) {
5258 cmethod = find_method_in_metadata (klass, ".cctor", 0, METHOD_ATTRIBUTE_SPECIAL_NAME);
5259 /* The find_method function ignores the 'flags' argument */
5260 if (cmethod && (cmethod->flags & METHOD_ATTRIBUTE_SPECIAL_NAME))
5261 klass->has_cctor = 1;
5263 mono_class_setup_methods (klass);
5264 if (mono_class_has_failure (klass))
5267 for (i = 0; i < klass->method.count; ++i) {
5268 MonoMethod *method = klass->methods [i];
5269 if ((method->flags & METHOD_ATTRIBUTE_SPECIAL_NAME) &&
5270 (strcmp (".cctor", method->name) == 0)) {
5271 klass->has_cctor = 1;
5279 if (klass->parent) {
5280 int first_iface_slot;
5281 /* This will compute klass->parent->vtable_size for some classes */
5282 mono_class_init (klass->parent);
5283 if (mono_class_has_failure (klass->parent)) {
5284 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
5287 if (mono_loader_get_last_error ())
5289 if (!klass->parent->vtable_size) {
5290 /* FIXME: Get rid of this somehow */
5291 mono_class_setup_vtable (klass->parent);
5292 if (mono_class_has_failure (klass->parent)) {
5293 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
5296 if (mono_loader_get_last_error ())
5299 first_iface_slot = klass->parent->vtable_size;
5300 if (mono_class_need_stelemref_method (klass))
5302 setup_interface_offsets (klass, first_iface_slot, TRUE);
5304 setup_interface_offsets (klass, 0, TRUE);
5307 if (mono_security_core_clr_enabled ())
5308 mono_security_core_clr_check_inheritance (klass);
5310 if (mono_loader_get_last_error ()) {
5311 if (!mono_class_has_failure (klass)) {
5312 set_failure_from_loader_error (klass, mono_loader_get_last_error ());
5314 mono_loader_clear_error ();
5317 if (klass->generic_class && !mono_verifier_class_is_valid_generic_instantiation (klass))
5318 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Invalid generic instantiation"));
5323 /* Because of the double-checking locking pattern */
5324 mono_memory_barrier ();
5326 klass->init_pending = 0;
5328 mono_loader_unlock ();
5330 return !mono_class_has_failure (klass);
5334 * mono_class_has_finalizer:
5336 * Return whenever KLASS has a finalizer, initializing klass->has_finalizer in the
5340 mono_class_has_finalizer (MonoClass *klass)
5342 gboolean has_finalize = FALSE;
5344 if (klass->has_finalize_inited)
5345 return klass->has_finalize;
5347 /* Interfaces and valuetypes are not supposed to have finalizers */
5348 if (!(MONO_CLASS_IS_INTERFACE (klass) || klass->valuetype)) {
5349 MonoMethod *cmethod = NULL;
5351 if (klass->rank == 1 && klass->byval_arg.type == MONO_TYPE_SZARRAY) {
5352 } else if (klass->generic_class) {
5353 MonoClass *gklass = klass->generic_class->container_class;
5355 has_finalize = mono_class_has_finalizer (gklass);
5356 } else if (klass->parent && klass->parent->has_finalize) {
5357 has_finalize = TRUE;
5359 if (klass->parent) {
5361 * Can't search in metadata for a method named Finalize, because that
5362 * ignores overrides.
5364 mono_class_setup_vtable (klass);
5365 if (mono_class_has_failure (klass) || mono_loader_get_last_error ())
5368 cmethod = klass->vtable [finalize_slot];
5372 g_assert (klass->vtable_size > finalize_slot);
5374 if (klass->parent) {
5375 if (cmethod->is_inflated)
5376 cmethod = ((MonoMethodInflated*)cmethod)->declaring;
5377 if (cmethod != default_finalize)
5378 has_finalize = TRUE;
5384 mono_image_lock (klass->image);
5386 if (!klass->has_finalize_inited) {
5387 klass->has_finalize = has_finalize ? 1 : 0;
5389 mono_memory_barrier ();
5390 klass->has_finalize_inited = TRUE;
5393 mono_image_unlock (klass->image);
5395 return klass->has_finalize;
5399 mono_is_corlib_image (MonoImage *image)
5401 /* FIXME: allow the dynamic case for our compilers and with full trust */
5402 if (image_is_dynamic (image))
5403 return image->assembly && !strcmp (image->assembly->aname.name, "mscorlib");
5405 return image == mono_defaults.corlib;
5409 * LOCKING: this assumes the loader lock is held
5412 mono_class_setup_mono_type (MonoClass *klass)
5414 const char *name = klass->name;
5415 const char *nspace = klass->name_space;
5416 gboolean is_corlib = mono_is_corlib_image (klass->image);
5418 klass->this_arg.byref = 1;
5419 klass->this_arg.data.klass = klass;
5420 klass->this_arg.type = MONO_TYPE_CLASS;
5421 klass->byval_arg.data.klass = klass;
5422 klass->byval_arg.type = MONO_TYPE_CLASS;
5424 if (is_corlib && !strcmp (nspace, "System")) {
5425 if (!strcmp (name, "ValueType")) {
5427 * do not set the valuetype bit for System.ValueType.
5428 * klass->valuetype = 1;
5430 klass->blittable = TRUE;
5431 } else if (!strcmp (name, "Enum")) {
5433 * do not set the valuetype bit for System.Enum.
5434 * klass->valuetype = 1;
5436 klass->valuetype = 0;
5437 klass->enumtype = 0;
5438 } else if (!strcmp (name, "Object")) {
5439 klass->byval_arg.type = MONO_TYPE_OBJECT;
5440 klass->this_arg.type = MONO_TYPE_OBJECT;
5441 } else if (!strcmp (name, "String")) {
5442 klass->byval_arg.type = MONO_TYPE_STRING;
5443 klass->this_arg.type = MONO_TYPE_STRING;
5444 } else if (!strcmp (name, "TypedReference")) {
5445 klass->byval_arg.type = MONO_TYPE_TYPEDBYREF;
5446 klass->this_arg.type = MONO_TYPE_TYPEDBYREF;
5450 if (klass->valuetype) {
5451 int t = MONO_TYPE_VALUETYPE;
5453 if (is_corlib && !strcmp (nspace, "System")) {
5456 if (!strcmp (name, "Boolean")) {
5457 t = MONO_TYPE_BOOLEAN;
5458 } else if (!strcmp(name, "Byte")) {
5460 klass->blittable = TRUE;
5464 if (!strcmp (name, "Char")) {
5469 if (!strcmp (name, "Double")) {
5471 klass->blittable = TRUE;
5475 if (!strcmp (name, "Int32")) {
5477 klass->blittable = TRUE;
5478 } else if (!strcmp(name, "Int16")) {
5480 klass->blittable = TRUE;
5481 } else if (!strcmp(name, "Int64")) {
5483 klass->blittable = TRUE;
5484 } else if (!strcmp(name, "IntPtr")) {
5486 klass->blittable = TRUE;
5490 if (!strcmp (name, "Single")) {
5492 klass->blittable = TRUE;
5493 } else if (!strcmp(name, "SByte")) {
5495 klass->blittable = TRUE;
5499 if (!strcmp (name, "UInt32")) {
5501 klass->blittable = TRUE;
5502 } else if (!strcmp(name, "UInt16")) {
5504 klass->blittable = TRUE;
5505 } else if (!strcmp(name, "UInt64")) {
5507 klass->blittable = TRUE;
5508 } else if (!strcmp(name, "UIntPtr")) {
5510 klass->blittable = TRUE;
5514 if (!strcmp (name, "TypedReference")) {
5515 t = MONO_TYPE_TYPEDBYREF;
5516 klass->blittable = TRUE;
5520 if (!strcmp (name, "Void")) {
5528 klass->byval_arg.type = (MonoTypeEnum)t;
5529 klass->this_arg.type = (MonoTypeEnum)t;
5532 if (MONO_CLASS_IS_INTERFACE (klass))
5533 klass->interface_id = mono_get_unique_iid (klass);
5539 * COM initialization is delayed until needed.
5540 * However when a [ComImport] attribute is present on a type it will trigger
5541 * the initialization. This is not a problem unless the BCL being executed
5542 * lacks the types that COM depends on (e.g. Variant on Silverlight).
5545 init_com_from_comimport (MonoClass *klass)
5547 /* we don't always allow COM initialization under the CoreCLR (e.g. Moonlight does not require it) */
5548 if (mono_security_core_clr_enabled ()) {
5549 /* but some other CoreCLR user could requires it for their platform (i.e. trusted) code */
5550 if (!mono_security_core_clr_determine_platform_image (klass->image)) {
5551 /* but it can not be made available for application (i.e. user code) since all COM calls
5552 * are considered native calls. In this case we fail with a TypeLoadException (just like
5553 * Silverlight 2 does */
5554 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
5559 /* FIXME : we should add an extra checks to ensure COM can be initialized properly before continuing */
5561 #endif /*DISABLE_COM*/
5564 * LOCKING: this assumes the loader lock is held
5567 mono_class_setup_parent (MonoClass *klass, MonoClass *parent)
5569 gboolean system_namespace;
5570 gboolean is_corlib = mono_is_corlib_image (klass->image);
5572 system_namespace = !strcmp (klass->name_space, "System") && is_corlib;
5574 /* if root of the hierarchy */
5575 if (system_namespace && !strcmp (klass->name, "Object")) {
5576 klass->parent = NULL;
5577 klass->instance_size = sizeof (MonoObject);
5580 if (!strcmp (klass->name, "<Module>")) {
5581 klass->parent = NULL;
5582 klass->instance_size = 0;
5586 if (!MONO_CLASS_IS_INTERFACE (klass)) {
5587 /* Imported COM Objects always derive from __ComObject. */
5589 if (MONO_CLASS_IS_IMPORT (klass)) {
5590 init_com_from_comimport (klass);
5591 if (parent == mono_defaults.object_class)
5592 parent = mono_class_get_com_object_class ();
5596 /* set the parent to something useful and safe, but mark the type as broken */
5597 parent = mono_defaults.object_class;
5598 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
5601 klass->parent = parent;
5603 if (parent->generic_class && !parent->name) {
5605 * If the parent is a generic instance, we may get
5606 * called before it is fully initialized, especially
5607 * before it has its name.
5612 #ifndef DISABLE_REMOTING
5613 klass->marshalbyref = parent->marshalbyref;
5614 klass->contextbound = parent->contextbound;
5617 klass->delegate = parent->delegate;
5619 if (MONO_CLASS_IS_IMPORT (klass) || mono_class_is_com_object (parent))
5620 mono_class_set_is_com_object (klass);
5622 if (system_namespace) {
5623 #ifndef DISABLE_REMOTING
5624 if (klass->name [0] == 'M' && !strcmp (klass->name, "MarshalByRefObject"))
5625 klass->marshalbyref = 1;
5627 if (klass->name [0] == 'C' && !strcmp (klass->name, "ContextBoundObject"))
5628 klass->contextbound = 1;
5630 if (klass->name [0] == 'D' && !strcmp (klass->name, "Delegate"))
5631 klass->delegate = 1;
5634 if (klass->parent->enumtype || (mono_is_corlib_image (klass->parent->image) && (strcmp (klass->parent->name, "ValueType") == 0) &&
5635 (strcmp (klass->parent->name_space, "System") == 0)))
5636 klass->valuetype = 1;
5637 if (mono_is_corlib_image (klass->parent->image) && ((strcmp (klass->parent->name, "Enum") == 0) && (strcmp (klass->parent->name_space, "System") == 0))) {
5638 klass->valuetype = klass->enumtype = 1;
5640 /*klass->enumtype = klass->parent->enumtype; */
5642 /* initialize com types if COM interfaces are present */
5644 if (MONO_CLASS_IS_IMPORT (klass))
5645 init_com_from_comimport (klass);
5647 klass->parent = NULL;
5653 * mono_class_setup_supertypes:
5656 * Build the data structure needed to make fast type checks work.
5657 * This currently sets two fields in @class:
5658 * - idepth: distance between @class and System.Object in the type
5660 * - supertypes: array of classes: each element has a class in the hierarchy
5661 * starting from @class up to System.Object
5663 * LOCKING: This function is atomic, in case of contention we waste memory.
5666 mono_class_setup_supertypes (MonoClass *klass)
5669 MonoClass **supertypes;
5671 mono_atomic_load_acquire (supertypes, MonoClass **, &klass->supertypes);
5675 if (klass->parent && !klass->parent->supertypes)
5676 mono_class_setup_supertypes (klass->parent);
5678 klass->idepth = klass->parent->idepth + 1;
5682 ms = MAX (MONO_DEFAULT_SUPERTABLE_SIZE, klass->idepth);
5683 supertypes = (MonoClass **)mono_class_alloc0 (klass, sizeof (MonoClass *) * ms);
5685 if (klass->parent) {
5686 CHECKED_METADATA_WRITE_PTR ( supertypes [klass->idepth - 1] , klass );
5689 for (supertype_idx = 0; supertype_idx < klass->parent->idepth; supertype_idx++)
5690 CHECKED_METADATA_WRITE_PTR ( supertypes [supertype_idx] , klass->parent->supertypes [supertype_idx] );
5692 CHECKED_METADATA_WRITE_PTR ( supertypes [0] , klass );
5695 CHECKED_METADATA_WRITE_PTR_ATOMIC ( klass->supertypes , supertypes );
5699 fix_gclass_incomplete_instantiation (MonoClass *gclass, void *user_data)
5701 MonoClass *gtd = (MonoClass*)user_data;
5702 /* Only try to fix generic instances of @gtd */
5703 if (gclass->generic_class->container_class != gtd)
5706 /* Check if the generic instance has no parent. */
5707 if (gtd->parent && !gclass->parent)
5708 mono_generic_class_setup_parent (gclass, gtd);
5714 mono_class_set_failure_and_error (MonoClass *klass, MonoError *error, const char *msg)
5716 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup (msg));
5717 mono_error_set_type_load_class (error, klass, msg);
5721 mono_class_set_failure_from_loader_error (MonoClass *klass, MonoError *error, char *msg)
5723 MonoLoaderError *lerror = mono_loader_get_last_error ();
5726 set_failure_from_loader_error (klass, lerror);
5727 mono_error_set_from_loader_error (error);
5731 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, msg);
5732 mono_error_set_type_load_class (error, klass, msg);
5737 * mono_class_create_from_typedef:
5738 * @image: image where the token is valid
5739 * @type_token: typedef token
5740 * @error: used to return any error found while creating the type
5742 * Create the MonoClass* representing the specified type token.
5743 * @type_token must be a TypeDef token.
5745 * FIXME: don't return NULL on failure, just the the caller figure it out.
5748 mono_class_create_from_typedef (MonoImage *image, guint32 type_token, MonoError *error)
5750 MonoTableInfo *tt = &image->tables [MONO_TABLE_TYPEDEF];
5751 MonoClass *klass, *parent = NULL;
5752 guint32 cols [MONO_TYPEDEF_SIZE];
5753 guint32 cols_next [MONO_TYPEDEF_SIZE];
5754 guint tidx = mono_metadata_token_index (type_token);
5755 MonoGenericContext *context = NULL;
5756 const char *name, *nspace;
5758 MonoClass **interfaces;
5759 guint32 field_last, method_last;
5760 guint32 nesting_tokeen;
5762 mono_error_init (error);
5764 if (mono_metadata_token_table (type_token) != MONO_TABLE_TYPEDEF || tidx > tt->rows) {
5765 mono_error_set_bad_image (error, image, "Invalid typedef token %x", type_token);
5766 mono_loader_assert_no_error ();
5770 mono_loader_lock ();
5772 if ((klass = (MonoClass *)mono_internal_hash_table_lookup (&image->class_cache, GUINT_TO_POINTER (type_token)))) {
5773 mono_loader_unlock ();
5774 mono_loader_assert_no_error ();
5778 mono_metadata_decode_row (tt, tidx - 1, cols, MONO_TYPEDEF_SIZE);
5780 name = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
5781 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
5783 klass = (MonoClass *)mono_image_alloc0 (image, sizeof (MonoClass));
5786 klass->name_space = nspace;
5788 mono_profiler_class_event (klass, MONO_PROFILE_START_LOAD);
5790 klass->image = image;
5791 klass->type_token = type_token;
5792 klass->flags = cols [MONO_TYPEDEF_FLAGS];
5794 mono_internal_hash_table_insert (&image->class_cache, GUINT_TO_POINTER (type_token), klass);
5796 classes_size += sizeof (MonoClass);
5799 * Check whether we're a generic type definition.
5801 klass->generic_container = mono_metadata_load_generic_params (image, klass->type_token, NULL);
5802 if (klass->generic_container) {
5803 klass->is_generic = 1;
5804 klass->generic_container->owner.klass = klass;
5805 klass->generic_container->is_anonymous = FALSE; // Owner class is now known, container is no longer anonymous
5806 context = &klass->generic_container->context;
5809 if (klass->generic_container)
5810 enable_gclass_recording ();
5812 if (cols [MONO_TYPEDEF_EXTENDS]) {
5814 guint32 parent_token = mono_metadata_token_from_dor (cols [MONO_TYPEDEF_EXTENDS]);
5816 if (mono_metadata_token_table (parent_token) == MONO_TABLE_TYPESPEC) {
5817 /*WARNING: this must satisfy mono_metadata_type_hash*/
5818 klass->this_arg.byref = 1;
5819 klass->this_arg.data.klass = klass;
5820 klass->this_arg.type = MONO_TYPE_CLASS;
5821 klass->byval_arg.data.klass = klass;
5822 klass->byval_arg.type = MONO_TYPE_CLASS;
5824 parent = mono_class_get_checked (image, parent_token, error);
5825 if (parent && context) /* Always inflate */
5826 parent = mono_class_inflate_generic_class_checked (parent, context, error);
5828 if (parent == NULL) {
5829 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup (mono_error_get_message (error)));
5830 goto parent_failure;
5833 for (tmp = parent; tmp; tmp = tmp->parent) {
5835 mono_class_set_failure_and_error (klass, error, "Cycle found while resolving parent");
5836 goto parent_failure;
5838 if (klass->generic_container && tmp->generic_class && tmp->generic_class->container_class == klass) {
5839 mono_class_set_failure_and_error (klass, error, "Parent extends generic instance of this type");
5840 goto parent_failure;
5845 mono_class_setup_parent (klass, parent);
5847 /* uses ->valuetype, which is initialized by mono_class_setup_parent above */
5848 mono_class_setup_mono_type (klass);
5850 if (klass->generic_container)
5851 disable_gclass_recording (fix_gclass_incomplete_instantiation, klass);
5854 * This might access klass->byval_arg for recursion generated by generic constraints,
5855 * so it has to come after setup_mono_type ().
5857 if ((nesting_tokeen = mono_metadata_nested_in_typedef (image, type_token))) {
5858 klass->nested_in = mono_class_create_from_typedef (image, nesting_tokeen, error);
5859 if (!mono_error_ok (error)) {
5860 /*FIXME implement a mono_class_set_failure_from_mono_error */
5861 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup (mono_error_get_message (error)));
5862 mono_loader_unlock ();
5863 mono_profiler_class_loaded (klass, MONO_PROFILE_FAILED);
5864 mono_loader_assert_no_error ();
5869 if ((klass->flags & TYPE_ATTRIBUTE_STRING_FORMAT_MASK) == TYPE_ATTRIBUTE_UNICODE_CLASS)
5873 if ((klass->flags & TYPE_ATTRIBUTE_STRING_FORMAT_MASK) == TYPE_ATTRIBUTE_AUTO_CLASS)
5877 klass->cast_class = klass->element_class = klass;
5879 if (!klass->enumtype) {
5880 if (!mono_metadata_interfaces_from_typedef_full (
5881 image, type_token, &interfaces, &icount, FALSE, context, error)){
5883 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup (mono_error_get_message (error)));
5884 mono_loader_unlock ();
5885 mono_profiler_class_loaded (klass, MONO_PROFILE_FAILED);
5889 klass->interfaces = interfaces;
5890 klass->interface_count = icount;
5891 klass->interfaces_inited = 1;
5894 /*g_print ("Load class %s\n", name);*/
5897 * Compute the field and method lists
5899 klass->field.first = cols [MONO_TYPEDEF_FIELD_LIST] - 1;
5900 klass->method.first = cols [MONO_TYPEDEF_METHOD_LIST] - 1;
5902 if (tt->rows > tidx){
5903 mono_metadata_decode_row (tt, tidx, cols_next, MONO_TYPEDEF_SIZE);
5904 field_last = cols_next [MONO_TYPEDEF_FIELD_LIST] - 1;
5905 method_last = cols_next [MONO_TYPEDEF_METHOD_LIST] - 1;
5907 field_last = image->tables [MONO_TABLE_FIELD].rows;
5908 method_last = image->tables [MONO_TABLE_METHOD].rows;
5911 if (cols [MONO_TYPEDEF_FIELD_LIST] &&
5912 cols [MONO_TYPEDEF_FIELD_LIST] <= image->tables [MONO_TABLE_FIELD].rows)
5913 klass->field.count = field_last - klass->field.first;
5915 klass->field.count = 0;
5917 if (cols [MONO_TYPEDEF_METHOD_LIST] <= image->tables [MONO_TABLE_METHOD].rows)
5918 klass->method.count = method_last - klass->method.first;
5920 klass->method.count = 0;
5922 /* reserve space to store vector pointer in arrays */
5923 if (mono_is_corlib_image (image) && !strcmp (nspace, "System") && !strcmp (name, "Array")) {
5924 klass->instance_size += 2 * sizeof (gpointer);
5925 g_assert (klass->field.count == 0);
5928 if (klass->enumtype) {
5929 MonoType *enum_basetype = mono_class_find_enum_basetype (klass, error);
5930 if (!enum_basetype) {
5931 /*set it to a default value as the whole runtime can't handle this to be null*/
5932 klass->cast_class = klass->element_class = mono_defaults.int32_class;
5933 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup (mono_error_get_message (error)));
5934 mono_loader_unlock ();
5935 mono_profiler_class_loaded (klass, MONO_PROFILE_FAILED);
5936 mono_loader_assert_no_error ();
5939 klass->cast_class = klass->element_class = mono_class_from_mono_type (enum_basetype);
5943 * If we're a generic type definition, load the constraints.
5944 * We must do this after the class has been constructed to make certain recursive scenarios
5947 if (klass->generic_container && !mono_metadata_load_generic_param_constraints_checked (image, type_token, klass->generic_container, error)) {
5948 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup_printf ("Could not load generic parameter constrains due to %s", mono_error_get_message (error)));
5949 mono_loader_unlock ();
5950 mono_profiler_class_loaded (klass, MONO_PROFILE_FAILED);
5951 mono_loader_assert_no_error ();
5955 if (klass->image->assembly_name && !strcmp (klass->image->assembly_name, "Mono.Simd") && !strcmp (nspace, "Mono.Simd")) {
5956 if (!strncmp (name, "Vector", 6))
5957 klass->simd_type = !strcmp (name + 6, "2d") || !strcmp (name + 6, "2ul") || !strcmp (name + 6, "2l") || !strcmp (name + 6, "4f") || !strcmp (name + 6, "4ui") || !strcmp (name + 6, "4i") || !strcmp (name + 6, "8s") || !strcmp (name + 6, "8us") || !strcmp (name + 6, "16b") || !strcmp (name + 6, "16sb");
5960 mono_loader_unlock ();
5962 mono_profiler_class_loaded (klass, MONO_PROFILE_OK);
5963 mono_loader_assert_no_error ();
5968 mono_class_setup_mono_type (klass);
5969 mono_loader_unlock ();
5970 mono_profiler_class_loaded (klass, MONO_PROFILE_FAILED);
5971 mono_loader_assert_no_error ();
5975 /** Is klass a Nullable<T> ginst? */
5977 mono_class_is_nullable (MonoClass *klass)
5979 return klass->generic_class != NULL &&
5980 klass->generic_class->container_class == mono_defaults.generic_nullable_class;
5984 /** if klass is T? return T */
5986 mono_class_get_nullable_param (MonoClass *klass)
5988 g_assert (mono_class_is_nullable (klass));
5989 return mono_class_from_mono_type (klass->generic_class->context.class_inst->type_argv [0]);
5993 mono_generic_class_setup_parent (MonoClass *klass, MonoClass *gtd)
5997 MonoGenericClass *gclass = klass->generic_class;
5999 klass->parent = mono_class_inflate_generic_class_checked (gtd->parent, mono_generic_class_get_context (gclass), &error);
6000 if (!mono_error_ok (&error)) {
6001 /*Set parent to something safe as the runtime doesn't handle well this kind of failure.*/
6002 klass->parent = mono_defaults.object_class;
6003 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
6004 mono_error_cleanup (&error);
6008 mono_class_setup_parent (klass, klass->parent);
6010 if (klass->enumtype) {
6011 klass->cast_class = gtd->cast_class;
6012 klass->element_class = gtd->element_class;
6018 * Create the `MonoClass' for an instantiation of a generic type.
6019 * We only do this if we actually need it.
6022 mono_generic_class_get_class (MonoGenericClass *gclass)
6024 MonoClass *klass, *gklass;
6026 if (gclass->cached_class)
6027 return gclass->cached_class;
6029 mono_loader_lock ();
6030 if (gclass->cached_class) {
6031 mono_loader_unlock ();
6032 return gclass->cached_class;
6035 klass = (MonoClass *)mono_image_set_alloc0 (gclass->owner, sizeof (MonoClass));
6037 gklass = gclass->container_class;
6039 if (record_gclass_instantiation > 0)
6040 gclass_recorded_list = g_slist_append (gclass_recorded_list, klass);
6042 if (gklass->nested_in) {
6043 /* The nested_in type should not be inflated since it's possible to produce a nested type with less generic arguments*/
6044 klass->nested_in = gklass->nested_in;
6047 klass->name = gklass->name;
6048 klass->name_space = gklass->name_space;
6050 mono_profiler_class_event (klass, MONO_PROFILE_START_LOAD);
6052 klass->image = gklass->image;
6053 klass->flags = gklass->flags;
6054 klass->type_token = gklass->type_token;
6055 klass->field.count = gklass->field.count;
6057 klass->is_inflated = 1;
6058 klass->generic_class = gclass;
6060 klass->byval_arg.type = MONO_TYPE_GENERICINST;
6061 klass->this_arg.type = klass->byval_arg.type;
6062 klass->this_arg.data.generic_class = klass->byval_arg.data.generic_class = gclass;
6063 klass->this_arg.byref = TRUE;
6064 klass->enumtype = gklass->enumtype;
6065 klass->valuetype = gklass->valuetype;
6067 klass->cast_class = klass->element_class = klass;
6069 if (mono_class_is_nullable (klass))
6070 klass->cast_class = klass->element_class = mono_class_get_nullable_param (klass);
6073 * We're not interested in the nested classes of a generic instance.
6074 * We use the generic type definition to look for nested classes.
6077 mono_generic_class_setup_parent (klass, gklass);
6079 if (gclass->is_dynamic) {
6081 * We don't need to do any init workf with unbaked typebuilders. Generic instances created at this point will be later unregistered and/or fixed.
6082 * This is to avoid work that would probably give wrong results as fields change as we build the TypeBuilder.
6083 * See remove_instantiations_of_and_ensure_contents in reflection.c and its usage in reflection.c to understand the fixup stage of SRE banking.
6085 if (!gklass->wastypebuilder)
6088 mono_class_setup_supertypes (klass);
6090 if (klass->enumtype) {
6092 * For enums, gklass->fields might not been set, but instance_size etc. is
6093 * already set in mono_reflection_create_internal_class (). For non-enums,
6094 * these will be computed normally in mono_class_layout_fields ().
6096 klass->instance_size = gklass->instance_size;
6097 klass->sizes.class_size = gklass->sizes.class_size;
6098 mono_memory_barrier ();
6099 klass->size_inited = 1;
6103 mono_memory_barrier ();
6104 gclass->cached_class = klass;
6106 mono_profiler_class_loaded (klass, MONO_PROFILE_OK);
6108 inflated_classes ++;
6109 inflated_classes_size += sizeof (MonoClass);
6111 mono_loader_unlock ();
6117 get_image_for_container (MonoGenericContainer *container)
6120 if (container->is_anonymous) {
6121 result = container->owner.image;
6124 if (container->is_method) {
6125 MonoMethod *method = container->owner.method;
6126 g_assert_checked (method);
6127 klass = method->klass;
6129 klass = container->owner.klass;
6131 g_assert_checked (klass);
6132 result = klass->image;
6139 get_image_for_generic_param (MonoGenericParam *param)
6141 MonoGenericContainer *container = mono_generic_param_owner (param);
6142 g_assert_checked (container);
6143 return get_image_for_container (container);
6146 // Make a string in the designated image consisting of a single integer.
6147 #define INT_STRING_SIZE 16
6149 make_generic_name_string (MonoImage *image, int num)
6151 char *name = (char *)mono_image_alloc0 (image, INT_STRING_SIZE);
6152 g_snprintf (name, INT_STRING_SIZE, "%d", num);
6156 // This is called by mono_class_from_generic_parameter_internal when a new class must be created.
6157 // pinfo is derived from param by the caller for us.
6159 make_generic_param_class (MonoGenericParam *param, MonoGenericParamInfo *pinfo)
6161 MonoClass *klass, **ptr;
6163 MonoGenericContainer *container = mono_generic_param_owner (param);
6164 g_assert_checked (container);
6166 MonoImage *image = get_image_for_container (container);
6167 gboolean is_mvar = container->is_method;
6168 gboolean is_anonymous = container->is_anonymous;
6170 klass = (MonoClass *)mono_image_alloc0 (image, sizeof (MonoClass));
6171 classes_size += sizeof (MonoClass);
6174 CHECKED_METADATA_WRITE_PTR_EXEMPT ( klass->name , pinfo->name );
6176 int n = mono_generic_param_num (param);
6177 CHECKED_METADATA_WRITE_PTR_LOCAL ( klass->name , make_generic_name_string (image, n) );
6181 CHECKED_METADATA_WRITE_PTR_EXEMPT ( klass->name_space , "" );
6182 } else if (is_mvar) {
6183 MonoMethod *omethod = container->owner.method;
6184 CHECKED_METADATA_WRITE_PTR_EXEMPT ( klass->name_space , (omethod && omethod->klass) ? omethod->klass->name_space : "" );
6186 MonoClass *oklass = container->owner.klass;
6187 CHECKED_METADATA_WRITE_PTR_EXEMPT ( klass->name_space , oklass ? oklass->name_space : "" );
6190 mono_profiler_class_event (klass, MONO_PROFILE_START_LOAD);
6192 // Count non-NULL items in pinfo->constraints
6195 for (ptr = pinfo->constraints; ptr && *ptr; ptr++, count++)
6199 if ((count > 0) && !MONO_CLASS_IS_INTERFACE (pinfo->constraints [0])) {
6200 CHECKED_METADATA_WRITE_PTR ( klass->parent , pinfo->constraints [0] );
6202 } else if (pinfo && pinfo->flags & GENERIC_PARAMETER_ATTRIBUTE_VALUE_TYPE_CONSTRAINT) {
6203 CHECKED_METADATA_WRITE_PTR ( klass->parent , mono_class_load_from_name (mono_defaults.corlib, "System", "ValueType") );
6205 CHECKED_METADATA_WRITE_PTR ( klass->parent , mono_defaults.object_class );
6208 if (count - pos > 0) {
6209 klass->interface_count = count - pos;
6210 CHECKED_METADATA_WRITE_PTR_LOCAL ( klass->interfaces , (MonoClass **)mono_image_alloc0 (image, sizeof (MonoClass *) * (count - pos)) );
6211 klass->interfaces_inited = TRUE;
6212 for (i = pos; i < count; i++)
6213 CHECKED_METADATA_WRITE_PTR ( klass->interfaces [i - pos] , pinfo->constraints [i] );
6216 CHECKED_METADATA_WRITE_PTR_EXEMPT ( klass->image , image );
6218 klass->inited = TRUE;
6219 CHECKED_METADATA_WRITE_PTR_LOCAL ( klass->cast_class , klass );
6220 CHECKED_METADATA_WRITE_PTR_LOCAL ( klass->element_class , klass );
6221 klass->flags = TYPE_ATTRIBUTE_PUBLIC;
6223 klass->byval_arg.type = is_mvar ? MONO_TYPE_MVAR : MONO_TYPE_VAR;
6224 klass->this_arg.type = klass->byval_arg.type;
6225 CHECKED_METADATA_WRITE_PTR ( klass->this_arg.data.generic_param , param );
6226 CHECKED_METADATA_WRITE_PTR ( klass->byval_arg.data.generic_param , param );
6227 klass->this_arg.byref = TRUE;
6229 /* We don't use type_token for VAR since only classes can use it (not arrays, pointer, VARs, etc) */
6230 klass->sizes.generic_param_token = pinfo ? pinfo->token : 0;
6232 /*Init these fields to sane values*/
6233 klass->min_align = 1;
6235 * This makes sure the the value size of this class is equal to the size of the types the gparam is
6236 * constrained to, the JIT depends on this.
6238 klass->instance_size = sizeof (MonoObject) + mono_type_stack_size_internal (&klass->byval_arg, NULL, TRUE);
6239 mono_memory_barrier ();
6240 klass->size_inited = 1;
6241 klass->setup_fields_called = 1;
6243 mono_class_setup_supertypes (klass);
6245 if (count - pos > 0) {
6246 mono_class_setup_vtable (klass->parent);
6247 if (mono_class_has_failure (klass->parent))
6248 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Failed to setup parent interfaces"));
6250 setup_interface_offsets (klass, klass->parent->vtable_size, TRUE);
6256 #define FAST_CACHE_SIZE 16
6259 * get_anon_gparam_class and set_anon_gparam_class are helpers for mono_class_from_generic_parameter_internal.
6260 * The latter will sometimes create MonoClasses for anonymous generic params. To prevent this being wasteful,
6261 * we cache the MonoClasses.
6262 * FIXME: It would be better to instead cache anonymous MonoGenericParams, and allow anonymous params to point directly to classes using the pklass field.
6263 * LOCKING: Takes the image lock depending on @take_lock.
6266 get_anon_gparam_class (MonoGenericParam *param, gboolean take_lock)
6268 int n = mono_generic_param_num (param);
6269 MonoImage *image = get_image_for_generic_param (param);
6270 gboolean is_mvar = mono_generic_param_owner (param)->is_method;
6271 MonoClass *klass = NULL;
6276 // For params with a small num and no constraints, we use a "fast" cache which does simple num lookup in an array.
6277 // For high numbers or constraints we have to use pointer hashes.
6278 if (param->gshared_constraint) {
6279 ht = is_mvar ? image->mvar_cache_constrained : image->var_cache_constrained;
6282 mono_image_lock (image);
6283 klass = (MonoClass *)g_hash_table_lookup (ht, param);
6285 mono_image_unlock (image);
6290 if (n < FAST_CACHE_SIZE) {
6292 return image->mvar_cache_fast ? image->mvar_cache_fast [n] : NULL;
6294 return image->var_cache_fast ? image->var_cache_fast [n] : NULL;
6296 ht = is_mvar ? image->mvar_cache_slow : image->var_cache_slow;
6299 mono_image_lock (image);
6300 klass = (MonoClass *)g_hash_table_lookup (ht, GINT_TO_POINTER (n));
6302 mono_image_unlock (image);
6309 * LOCKING: Image lock (param->image) must be held
6312 set_anon_gparam_class (MonoGenericParam *param, MonoClass *klass)
6314 int n = mono_generic_param_num (param);
6315 MonoImage *image = get_image_for_generic_param (param);
6316 gboolean is_mvar = mono_generic_param_owner (param)->is_method;
6320 if (param->gshared_constraint) {
6321 GHashTable *ht = is_mvar ? image->mvar_cache_constrained : image->var_cache_constrained;
6323 ht = g_hash_table_new ((GHashFunc)mono_metadata_generic_param_hash, (GEqualFunc)mono_metadata_generic_param_equal);
6324 mono_memory_barrier ();
6326 image->mvar_cache_constrained = ht;
6328 image->var_cache_constrained = ht;
6330 g_hash_table_insert (ht, param, klass);
6331 } else if (n < FAST_CACHE_SIZE) {
6333 /* Requires locking to avoid droping an already published class */
6334 if (!image->mvar_cache_fast)
6335 image->mvar_cache_fast = (MonoClass **)mono_image_alloc0 (image, sizeof (MonoClass*) * FAST_CACHE_SIZE);
6336 image->mvar_cache_fast [n] = klass;
6338 if (!image->var_cache_fast)
6339 image->var_cache_fast = (MonoClass **)mono_image_alloc0 (image, sizeof (MonoClass*) * FAST_CACHE_SIZE);
6340 image->var_cache_fast [n] = klass;
6343 GHashTable *ht = is_mvar ? image->mvar_cache_slow : image->var_cache_slow;
6345 ht = is_mvar ? image->mvar_cache_slow : image->var_cache_slow;
6347 ht = g_hash_table_new (NULL, NULL);
6348 mono_memory_barrier ();
6350 image->mvar_cache_slow = ht;
6352 image->var_cache_slow = ht;
6355 g_hash_table_insert (ht, GINT_TO_POINTER (n), klass);
6360 * LOCKING: Acquires the image lock (@image).
6363 mono_class_from_generic_parameter_internal (MonoGenericParam *param)
6365 MonoImage *image = get_image_for_generic_param (param);
6366 MonoGenericParamInfo *pinfo = mono_generic_param_info (param);
6367 MonoClass *klass, *klass2;
6369 // If a klass already exists for this object and is cached, return it.
6370 if (pinfo) // Non-anonymous
6371 klass = pinfo->pklass;
6373 klass = get_anon_gparam_class (param, TRUE);
6378 // Create a new klass
6379 klass = make_generic_param_class (param, pinfo);
6381 // Now we need to cache the klass we created.
6382 // But since we wait to grab the lock until after creating the klass, we need to check to make sure
6383 // another thread did not get in and cache a klass ahead of us. In that case, return their klass
6384 // and allow our newly-created klass object to just leak.
6385 mono_memory_barrier ();
6387 mono_image_lock (image);
6389 // Here "klass2" refers to the klass potentially created by the other thread.
6390 if (pinfo) // Repeat check from above
6391 klass2 = pinfo->pklass;
6393 klass2 = get_anon_gparam_class (param, FALSE);
6400 pinfo->pklass = klass;
6402 set_anon_gparam_class (param, klass);
6404 mono_image_unlock (image);
6406 /* FIXME: Should this go inside 'make_generic_param_klass'? */
6408 mono_profiler_class_loaded (klass2, MONO_PROFILE_FAILED); // Alert profiler about botched class create
6410 mono_profiler_class_loaded (klass, MONO_PROFILE_OK);
6416 * mono_class_from_generic_parameter:
6417 * @param: Parameter to find/construct a class for.
6418 * @arg2: Is ignored.
6419 * @arg3: Is ignored.
6422 mono_class_from_generic_parameter (MonoGenericParam *param, MonoImage *arg2 G_GNUC_UNUSED, gboolean arg3 G_GNUC_UNUSED)
6424 return mono_class_from_generic_parameter_internal (param);
6429 mono_ptr_class_get (MonoType *type)
6432 MonoClass *el_class;
6436 el_class = mono_class_from_mono_type (type);
6437 image = el_class->image;
6439 mono_image_lock (image);
6440 if (image->ptr_cache) {
6441 if ((result = (MonoClass *)g_hash_table_lookup (image->ptr_cache, el_class))) {
6442 mono_image_unlock (image);
6446 mono_image_unlock (image);
6448 result = (MonoClass *)mono_image_alloc0 (image, sizeof (MonoClass));
6450 classes_size += sizeof (MonoClass);
6452 result->parent = NULL; /* no parent for PTR types */
6453 result->name_space = el_class->name_space;
6454 name = g_strdup_printf ("%s*", el_class->name);
6455 result->name = mono_image_strdup (image, name);
6458 mono_profiler_class_event (result, MONO_PROFILE_START_LOAD);
6460 result->image = el_class->image;
6461 result->inited = TRUE;
6462 result->flags = TYPE_ATTRIBUTE_CLASS | (el_class->flags & TYPE_ATTRIBUTE_VISIBILITY_MASK);
6463 /* Can pointers get boxed? */
6464 result->instance_size = sizeof (gpointer);
6465 result->cast_class = result->element_class = el_class;
6466 result->blittable = TRUE;
6468 result->byval_arg.type = MONO_TYPE_PTR;
6469 result->this_arg.type = result->byval_arg.type;
6470 result->this_arg.data.type = result->byval_arg.data.type = &result->element_class->byval_arg;
6471 result->this_arg.byref = TRUE;
6473 mono_class_setup_supertypes (result);
6475 mono_image_lock (image);
6476 if (image->ptr_cache) {
6478 if ((result2 = (MonoClass *)g_hash_table_lookup (image->ptr_cache, el_class))) {
6479 mono_image_unlock (image);
6480 mono_profiler_class_loaded (result, MONO_PROFILE_FAILED);
6484 image->ptr_cache = g_hash_table_new (mono_aligned_addr_hash, NULL);
6486 g_hash_table_insert (image->ptr_cache, el_class, result);
6487 mono_image_unlock (image);
6489 mono_profiler_class_loaded (result, MONO_PROFILE_OK);
6495 mono_fnptr_class_get (MonoMethodSignature *sig)
6498 static GHashTable *ptr_hash = NULL;
6500 /* FIXME: These should be allocate from a mempool as well, but which one ? */
6502 mono_loader_lock ();
6505 ptr_hash = g_hash_table_new (mono_aligned_addr_hash, NULL);
6507 if ((result = (MonoClass *)g_hash_table_lookup (ptr_hash, sig))) {
6508 mono_loader_unlock ();
6511 result = g_new0 (MonoClass, 1);
6513 result->parent = NULL; /* no parent for PTR types */
6514 result->name_space = "System";
6515 result->name = "MonoFNPtrFakeClass";
6517 mono_profiler_class_event (result, MONO_PROFILE_START_LOAD);
6519 result->image = mono_defaults.corlib; /* need to fix... */
6520 result->inited = TRUE;
6521 result->flags = TYPE_ATTRIBUTE_CLASS; /* | (el_class->flags & TYPE_ATTRIBUTE_VISIBILITY_MASK); */
6522 /* Can pointers get boxed? */
6523 result->instance_size = sizeof (gpointer);
6524 result->cast_class = result->element_class = result;
6525 result->blittable = TRUE;
6527 result->byval_arg.type = MONO_TYPE_FNPTR;
6528 result->this_arg.type = result->byval_arg.type;
6529 result->this_arg.data.method = result->byval_arg.data.method = sig;
6530 result->this_arg.byref = TRUE;
6531 result->blittable = TRUE;
6533 mono_class_setup_supertypes (result);
6535 g_hash_table_insert (ptr_hash, sig, result);
6537 mono_loader_unlock ();
6539 mono_profiler_class_loaded (result, MONO_PROFILE_OK);
6545 * mono_class_from_mono_type:
6546 * @type: describes the type to return
6548 * This returns a MonoClass for the specified MonoType, the value is never NULL.
6551 mono_class_from_mono_type (MonoType *type)
6553 switch (type->type) {
6554 case MONO_TYPE_OBJECT:
6555 return type->data.klass? type->data.klass: mono_defaults.object_class;
6556 case MONO_TYPE_VOID:
6557 return type->data.klass? type->data.klass: mono_defaults.void_class;
6558 case MONO_TYPE_BOOLEAN:
6559 return type->data.klass? type->data.klass: mono_defaults.boolean_class;
6560 case MONO_TYPE_CHAR:
6561 return type->data.klass? type->data.klass: mono_defaults.char_class;
6563 return type->data.klass? type->data.klass: mono_defaults.sbyte_class;
6565 return type->data.klass? type->data.klass: mono_defaults.byte_class;
6567 return type->data.klass? type->data.klass: mono_defaults.int16_class;
6569 return type->data.klass? type->data.klass: mono_defaults.uint16_class;
6571 return type->data.klass? type->data.klass: mono_defaults.int32_class;
6573 return type->data.klass? type->data.klass: mono_defaults.uint32_class;
6575 return type->data.klass? type->data.klass: mono_defaults.int_class;
6577 return type->data.klass? type->data.klass: mono_defaults.uint_class;
6579 return type->data.klass? type->data.klass: mono_defaults.int64_class;
6581 return type->data.klass? type->data.klass: mono_defaults.uint64_class;
6583 return type->data.klass? type->data.klass: mono_defaults.single_class;
6585 return type->data.klass? type->data.klass: mono_defaults.double_class;
6586 case MONO_TYPE_STRING:
6587 return type->data.klass? type->data.klass: mono_defaults.string_class;
6588 case MONO_TYPE_TYPEDBYREF:
6589 return type->data.klass? type->data.klass: mono_defaults.typed_reference_class;
6590 case MONO_TYPE_ARRAY:
6591 return mono_bounded_array_class_get (type->data.array->eklass, type->data.array->rank, TRUE);
6593 return mono_ptr_class_get (type->data.type);
6594 case MONO_TYPE_FNPTR:
6595 return mono_fnptr_class_get (type->data.method);
6596 case MONO_TYPE_SZARRAY:
6597 return mono_array_class_get (type->data.klass, 1);
6598 case MONO_TYPE_CLASS:
6599 case MONO_TYPE_VALUETYPE:
6600 return type->data.klass;
6601 case MONO_TYPE_GENERICINST:
6602 return mono_generic_class_get_class (type->data.generic_class);
6603 case MONO_TYPE_MVAR:
6605 return mono_class_from_generic_parameter_internal (type->data.generic_param);
6607 g_warning ("mono_class_from_mono_type: implement me 0x%02x\n", type->type);
6608 g_assert_not_reached ();
6611 // Yes, this returns NULL, even if it is documented as not doing so, but there
6612 // is no way for the code to make it this far, due to the assert above.
6617 * mono_type_retrieve_from_typespec
6618 * @image: context where the image is created
6619 * @type_spec: typespec token
6620 * @context: the generic context used to evaluate generic instantiations in
6623 mono_type_retrieve_from_typespec (MonoImage *image, guint32 type_spec, MonoGenericContext *context, gboolean *did_inflate, MonoError *error)
6625 MonoType *t = mono_type_create_from_typespec_checked (image, type_spec, error);
6627 *did_inflate = FALSE;
6632 if (context && (context->class_inst || context->method_inst)) {
6633 MonoType *inflated = inflate_generic_type (NULL, t, context, error);
6635 if (!mono_error_ok (error)) {
6636 mono_loader_assert_no_error ();
6642 *did_inflate = TRUE;
6649 * mono_class_create_from_typespec
6650 * @image: context where the image is created
6651 * @type_spec: typespec token
6652 * @context: the generic context used to evaluate generic instantiations in
6655 mono_class_create_from_typespec (MonoImage *image, guint32 type_spec, MonoGenericContext *context, MonoError *error)
6658 gboolean inflated = FALSE;
6659 MonoType *t = mono_type_retrieve_from_typespec (image, type_spec, context, &inflated, error);
6660 return_val_if_nok (error, NULL);
6661 ret = mono_class_from_mono_type (t);
6663 mono_metadata_free_type (t);
6668 * mono_bounded_array_class_get:
6669 * @element_class: element class
6670 * @rank: the dimension of the array class
6671 * @bounded: whenever the array has non-zero bounds
6673 * Returns: A class object describing the array with element type @element_type and
6677 mono_bounded_array_class_get (MonoClass *eclass, guint32 rank, gboolean bounded)
6681 MonoClass *parent = NULL;
6682 GSList *list, *rootlist = NULL;
6685 gboolean corlib_type = FALSE;
6687 g_assert (rank <= 255);
6690 /* bounded only matters for one-dimensional arrays */
6693 image = eclass->image;
6695 if (rank == 1 && !bounded) {
6697 * This case is very frequent not just during compilation because of calls
6698 * from mono_class_from_mono_type (), mono_array_new (),
6699 * Array:CreateInstance (), etc, so use a separate cache + a separate lock.
6701 mono_os_mutex_lock (&image->szarray_cache_lock);
6702 if (!image->szarray_cache)
6703 image->szarray_cache = g_hash_table_new (mono_aligned_addr_hash, NULL);
6704 klass = (MonoClass *)g_hash_table_lookup (image->szarray_cache, eclass);
6705 mono_os_mutex_unlock (&image->szarray_cache_lock);
6709 mono_loader_lock ();
6711 mono_loader_lock ();
6713 if (!image->array_cache)
6714 image->array_cache = g_hash_table_new (mono_aligned_addr_hash, NULL);
6716 if ((rootlist = list = (GSList *)g_hash_table_lookup (image->array_cache, eclass))) {
6717 for (; list; list = list->next) {
6718 klass = (MonoClass *)list->data;
6719 if ((klass->rank == rank) && (klass->byval_arg.type == (((rank > 1) || bounded) ? MONO_TYPE_ARRAY : MONO_TYPE_SZARRAY))) {
6720 mono_loader_unlock ();
6727 /* for the building corlib use System.Array from it */
6728 if (image->assembly && assembly_is_dynamic (image->assembly) && image->assembly_name && strcmp (image->assembly_name, "mscorlib") == 0) {
6729 parent = mono_class_load_from_name (image, "System", "Array");
6732 parent = mono_defaults.array_class;
6733 if (!parent->inited)
6734 mono_class_init (parent);
6737 klass = (MonoClass *)mono_image_alloc0 (image, sizeof (MonoClass));
6739 klass->image = image;
6740 klass->name_space = eclass->name_space;
6741 nsize = strlen (eclass->name);
6742 name = (char *)g_malloc (nsize + 2 + rank + 1);
6743 memcpy (name, eclass->name, nsize);
6746 memset (name + nsize + 1, ',', rank - 1);
6748 name [nsize + rank] = '*';
6749 name [nsize + rank + bounded] = ']';
6750 name [nsize + rank + bounded + 1] = 0;
6751 klass->name = mono_image_strdup (image, name);
6754 mono_profiler_class_event (klass, MONO_PROFILE_START_LOAD);
6756 classes_size += sizeof (MonoClass);
6758 klass->type_token = 0;
6759 /* all arrays are marked serializable and sealed, bug #42779 */
6760 klass->flags = TYPE_ATTRIBUTE_CLASS | TYPE_ATTRIBUTE_SERIALIZABLE | TYPE_ATTRIBUTE_SEALED | TYPE_ATTRIBUTE_PUBLIC;
6761 klass->parent = parent;
6762 klass->instance_size = mono_class_instance_size (klass->parent);
6764 if (eclass->byval_arg.type == MONO_TYPE_TYPEDBYREF || eclass->byval_arg.type == MONO_TYPE_VOID) {
6765 /*Arrays of those two types are invalid.*/
6766 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
6767 } else if (eclass->enumtype && !mono_class_enum_basetype (eclass)) {
6768 if (!eclass->ref_info_handle || eclass->wastypebuilder) {
6769 g_warning ("Only incomplete TypeBuilder objects are allowed to be an enum without base_type");
6770 g_assert (eclass->ref_info_handle && !eclass->wastypebuilder);
6772 /* element_size -1 is ok as this is not an instantitable type*/
6773 klass->sizes.element_size = -1;
6775 klass->sizes.element_size = mono_class_array_element_size (eclass);
6777 mono_class_setup_supertypes (klass);
6779 if (eclass->generic_class)
6780 mono_class_init (eclass);
6781 if (!eclass->size_inited)
6782 mono_class_setup_fields (eclass);
6783 if (mono_class_has_failure (eclass)) /*FIXME we fail the array type, but we have to let other fields be set.*/
6784 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
6786 klass->has_references = MONO_TYPE_IS_REFERENCE (&eclass->byval_arg) || eclass->has_references? TRUE: FALSE;
6790 if (eclass->enumtype)
6791 klass->cast_class = eclass->element_class;
6793 klass->cast_class = eclass;
6795 switch (klass->cast_class->byval_arg.type) {
6797 klass->cast_class = mono_defaults.byte_class;
6800 klass->cast_class = mono_defaults.int16_class;
6803 #if SIZEOF_VOID_P == 4
6807 klass->cast_class = mono_defaults.int32_class;
6810 #if SIZEOF_VOID_P == 8
6814 klass->cast_class = mono_defaults.int64_class;
6820 klass->element_class = eclass;
6822 if ((rank > 1) || bounded) {
6823 MonoArrayType *at = (MonoArrayType *)mono_image_alloc0 (image, sizeof (MonoArrayType));
6824 klass->byval_arg.type = MONO_TYPE_ARRAY;
6825 klass->byval_arg.data.array = at;
6826 at->eklass = eclass;
6828 /* FIXME: complete.... */
6830 klass->byval_arg.type = MONO_TYPE_SZARRAY;
6831 klass->byval_arg.data.klass = eclass;
6833 klass->this_arg = klass->byval_arg;
6834 klass->this_arg.byref = 1;
6839 klass->generic_container = eclass->generic_container;
6841 if (rank == 1 && !bounded) {
6842 MonoClass *prev_class;
6844 mono_os_mutex_lock (&image->szarray_cache_lock);
6845 prev_class = (MonoClass *)g_hash_table_lookup (image->szarray_cache, eclass);
6847 /* Someone got in before us */
6850 g_hash_table_insert (image->szarray_cache, eclass, klass);
6851 mono_os_mutex_unlock (&image->szarray_cache_lock);
6853 list = g_slist_append (rootlist, klass);
6854 g_hash_table_insert (image->array_cache, eclass, list);
6857 mono_loader_unlock ();
6859 mono_profiler_class_loaded (klass, MONO_PROFILE_OK);
6865 * mono_array_class_get:
6866 * @element_class: element class
6867 * @rank: the dimension of the array class
6869 * Returns: A class object describing the array with element type @element_type and
6873 mono_array_class_get (MonoClass *eclass, guint32 rank)
6875 return mono_bounded_array_class_get (eclass, rank, FALSE);
6879 * mono_class_instance_size:
6882 * Use to get the size of a class in bytes.
6884 * Returns: The size of an object instance
6887 mono_class_instance_size (MonoClass *klass)
6889 if (!klass->size_inited)
6890 mono_class_init (klass);
6892 return klass->instance_size;
6896 * mono_class_min_align:
6899 * Use to get the computed minimum alignment requirements for the specified class.
6901 * Returns: minimm alignment requirements
6904 mono_class_min_align (MonoClass *klass)
6906 if (!klass->size_inited)
6907 mono_class_init (klass);
6909 return klass->min_align;
6913 * mono_class_value_size:
6916 * This function is used for value types, and return the
6917 * space and the alignment to store that kind of value object.
6919 * Returns: the size of a value of kind @klass
6922 mono_class_value_size (MonoClass *klass, guint32 *align)
6926 /* fixme: check disable, because we still have external revereces to
6927 * mscorlib and Dummy Objects
6929 /*g_assert (klass->valuetype);*/
6931 size = mono_class_instance_size (klass) - sizeof (MonoObject);
6934 *align = klass->min_align;
6940 * mono_class_data_size:
6943 * Returns: The size of the static class data
6946 mono_class_data_size (MonoClass *klass)
6949 mono_class_init (klass);
6950 /* This can happen with dynamically created types */
6951 if (!klass->fields_inited)
6952 mono_class_setup_fields_locking (klass);
6954 /* in arrays, sizes.class_size is unioned with element_size
6955 * and arrays have no static fields
6959 return klass->sizes.class_size;
6963 * Auxiliary routine to mono_class_get_field
6965 * Takes a field index instead of a field token.
6967 static MonoClassField *
6968 mono_class_get_field_idx (MonoClass *klass, int idx)
6970 mono_class_setup_fields_locking (klass);
6971 if (mono_class_has_failure (klass))
6975 if (klass->image->uncompressed_metadata) {
6977 * klass->field.first points to the FieldPtr table, while idx points into the
6978 * Field table, so we have to do a search.
6980 /*FIXME this is broken for types with multiple fields with the same name.*/
6981 const char *name = mono_metadata_string_heap (klass->image, mono_metadata_decode_row_col (&klass->image->tables [MONO_TABLE_FIELD], idx, MONO_FIELD_NAME));
6984 for (i = 0; i < klass->field.count; ++i)
6985 if (mono_field_get_name (&klass->fields [i]) == name)
6986 return &klass->fields [i];
6987 g_assert_not_reached ();
6989 if (klass->field.count) {
6990 if ((idx >= klass->field.first) && (idx < klass->field.first + klass->field.count)){
6991 return &klass->fields [idx - klass->field.first];
6995 klass = klass->parent;
7001 * mono_class_get_field:
7002 * @class: the class to lookup the field.
7003 * @field_token: the field token
7005 * Returns: A MonoClassField representing the type and offset of
7006 * the field, or a NULL value if the field does not belong to this
7010 mono_class_get_field (MonoClass *klass, guint32 field_token)
7012 int idx = mono_metadata_token_index (field_token);
7014 g_assert (mono_metadata_token_code (field_token) == MONO_TOKEN_FIELD_DEF);
7016 return mono_class_get_field_idx (klass, idx - 1);
7020 * mono_class_get_field_from_name:
7021 * @klass: the class to lookup the field.
7022 * @name: the field name
7024 * Search the class @klass and it's parents for a field with the name @name.
7026 * Returns: The MonoClassField pointer of the named field or NULL
7029 mono_class_get_field_from_name (MonoClass *klass, const char *name)
7031 return mono_class_get_field_from_name_full (klass, name, NULL);
7035 * mono_class_get_field_from_name_full:
7036 * @klass: the class to lookup the field.
7037 * @name: the field name
7038 * @type: the type of the fields. This optional.
7040 * Search the class @klass and it's parents for a field with the name @name and type @type.
7042 * If @klass is an inflated generic type, the type comparison is done with the equivalent field
7043 * of its generic type definition.
7045 * Returns: The MonoClassField pointer of the named field or NULL
7048 mono_class_get_field_from_name_full (MonoClass *klass, const char *name, MonoType *type)
7052 mono_class_setup_fields_locking (klass);
7053 if (mono_class_has_failure (klass))
7057 for (i = 0; i < klass->field.count; ++i) {
7058 MonoClassField *field = &klass->fields [i];
7060 if (strcmp (name, mono_field_get_name (field)) != 0)
7064 MonoType *field_type = mono_metadata_get_corresponding_field_from_generic_type_definition (field)->type;
7065 if (!mono_metadata_type_equal_full (type, field_type, TRUE))
7070 klass = klass->parent;
7076 * mono_class_get_field_token:
7077 * @field: the field we need the token of
7079 * Get the token of a field. Note that the tokesn is only valid for the image
7080 * the field was loaded from. Don't use this function for fields in dynamic types.
7082 * Returns: The token representing the field in the image it was loaded from.
7085 mono_class_get_field_token (MonoClassField *field)
7087 MonoClass *klass = field->parent;
7090 mono_class_setup_fields_locking (klass);
7095 for (i = 0; i < klass->field.count; ++i) {
7096 if (&klass->fields [i] == field) {
7097 int idx = klass->field.first + i + 1;
7099 if (klass->image->uncompressed_metadata)
7100 idx = mono_metadata_translate_token_index (klass->image, MONO_TABLE_FIELD, idx);
7101 return mono_metadata_make_token (MONO_TABLE_FIELD, idx);
7104 klass = klass->parent;
7107 g_assert_not_reached ();
7112 mono_field_get_index (MonoClassField *field)
7114 int index = field - field->parent->fields;
7116 g_assert (index >= 0 && index < field->parent->field.count);
7122 * mono_class_get_field_default_value:
7124 * Return the default value of the field as a pointer into the metadata blob.
7127 mono_class_get_field_default_value (MonoClassField *field, MonoTypeEnum *def_type)
7130 guint32 constant_cols [MONO_CONSTANT_SIZE];
7132 MonoClass *klass = field->parent;
7134 g_assert (field->type->attrs & FIELD_ATTRIBUTE_HAS_DEFAULT);
7136 if (!klass->ext || !klass->ext->field_def_values) {
7137 MonoFieldDefaultValue *def_values;
7139 mono_class_alloc_ext (klass);
7141 def_values = (MonoFieldDefaultValue *)mono_class_alloc0 (klass, sizeof (MonoFieldDefaultValue) * klass->field.count);
7143 mono_image_lock (klass->image);
7144 mono_memory_barrier ();
7145 if (!klass->ext->field_def_values)
7146 klass->ext->field_def_values = def_values;
7147 mono_image_unlock (klass->image);
7150 field_index = mono_field_get_index (field);
7152 if (!klass->ext->field_def_values [field_index].data) {
7153 cindex = mono_metadata_get_constant_index (field->parent->image, mono_class_get_field_token (field), 0);
7157 g_assert (!(field->type->attrs & FIELD_ATTRIBUTE_HAS_FIELD_RVA));
7159 mono_metadata_decode_row (&field->parent->image->tables [MONO_TABLE_CONSTANT], cindex - 1, constant_cols, MONO_CONSTANT_SIZE);
7160 klass->ext->field_def_values [field_index].def_type = (MonoTypeEnum)constant_cols [MONO_CONSTANT_TYPE];
7161 klass->ext->field_def_values [field_index].data = (const char *)mono_metadata_blob_heap (field->parent->image, constant_cols [MONO_CONSTANT_VALUE]);
7164 *def_type = klass->ext->field_def_values [field_index].def_type;
7165 return klass->ext->field_def_values [field_index].data;
7169 mono_property_get_index (MonoProperty *prop)
7171 int index = prop - prop->parent->ext->properties;
7173 g_assert (index >= 0 && index < prop->parent->ext->property.count);
7179 * mono_class_get_property_default_value:
7181 * Return the default value of the field as a pointer into the metadata blob.
7184 mono_class_get_property_default_value (MonoProperty *property, MonoTypeEnum *def_type)
7187 guint32 constant_cols [MONO_CONSTANT_SIZE];
7188 MonoClass *klass = property->parent;
7190 g_assert (property->attrs & PROPERTY_ATTRIBUTE_HAS_DEFAULT);
7192 * We don't cache here because it is not used by C# so it's quite rare, but
7193 * we still do the lookup in klass->ext because that is where the data
7194 * is stored for dynamic assemblies.
7197 if (image_is_dynamic (klass->image)) {
7198 int prop_index = mono_property_get_index (property);
7199 if (klass->ext->prop_def_values && klass->ext->prop_def_values [prop_index].data) {
7200 *def_type = klass->ext->prop_def_values [prop_index].def_type;
7201 return klass->ext->prop_def_values [prop_index].data;
7205 cindex = mono_metadata_get_constant_index (klass->image, mono_class_get_property_token (property), 0);
7209 mono_metadata_decode_row (&klass->image->tables [MONO_TABLE_CONSTANT], cindex - 1, constant_cols, MONO_CONSTANT_SIZE);
7210 *def_type = (MonoTypeEnum)constant_cols [MONO_CONSTANT_TYPE];
7211 return (const char *)mono_metadata_blob_heap (klass->image, constant_cols [MONO_CONSTANT_VALUE]);
7215 mono_class_get_event_token (MonoEvent *event)
7217 MonoClass *klass = event->parent;
7222 for (i = 0; i < klass->ext->event.count; ++i) {
7223 if (&klass->ext->events [i] == event)
7224 return mono_metadata_make_token (MONO_TABLE_EVENT, klass->ext->event.first + i + 1);
7227 klass = klass->parent;
7230 g_assert_not_reached ();
7235 * mono_class_get_property_from_name:
7237 * @name: name of the property to lookup in the specified class
7239 * Use this method to lookup a property in a class
7240 * Returns: the MonoProperty with the given name, or NULL if the property
7241 * does not exist on the @klass.
7244 mono_class_get_property_from_name (MonoClass *klass, const char *name)
7248 gpointer iter = NULL;
7249 while ((p = mono_class_get_properties (klass, &iter))) {
7250 if (! strcmp (name, p->name))
7253 klass = klass->parent;
7259 * mono_class_get_property_token:
7260 * @prop: MonoProperty to query
7262 * Returns: The ECMA token for the specified property.
7265 mono_class_get_property_token (MonoProperty *prop)
7267 MonoClass *klass = prop->parent;
7271 gpointer iter = NULL;
7272 while ((p = mono_class_get_properties (klass, &iter))) {
7273 if (&klass->ext->properties [i] == prop)
7274 return mono_metadata_make_token (MONO_TABLE_PROPERTY, klass->ext->property.first + i + 1);
7278 klass = klass->parent;
7281 g_assert_not_reached ();
7286 mono_class_name_from_token (MonoImage *image, guint32 type_token)
7288 const char *name, *nspace;
7289 if (image_is_dynamic (image))
7290 return g_strdup_printf ("DynamicType 0x%08x", type_token);
7292 switch (type_token & 0xff000000){
7293 case MONO_TOKEN_TYPE_DEF: {
7294 guint32 cols [MONO_TYPEDEF_SIZE];
7295 MonoTableInfo *tt = &image->tables [MONO_TABLE_TYPEDEF];
7296 guint tidx = mono_metadata_token_index (type_token);
7298 if (tidx > tt->rows)
7299 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
7301 mono_metadata_decode_row (tt, tidx - 1, cols, MONO_TYPEDEF_SIZE);
7302 name = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
7303 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
7304 if (strlen (nspace) == 0)
7305 return g_strdup_printf ("%s", name);
7307 return g_strdup_printf ("%s.%s", nspace, name);
7310 case MONO_TOKEN_TYPE_REF: {
7312 guint32 cols [MONO_TYPEREF_SIZE];
7313 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEREF];
7314 guint tidx = mono_metadata_token_index (type_token);
7317 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
7319 if (!mono_verifier_verify_typeref_row (image, tidx - 1, &error)) {
7320 char *msg = g_strdup_printf ("Invalid type token 0x%08x due to '%s'", type_token, mono_error_get_message (&error));
7321 mono_error_cleanup (&error);
7325 mono_metadata_decode_row (t, tidx-1, cols, MONO_TYPEREF_SIZE);
7326 name = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAME]);
7327 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAMESPACE]);
7328 if (strlen (nspace) == 0)
7329 return g_strdup_printf ("%s", name);
7331 return g_strdup_printf ("%s.%s", nspace, name);
7334 case MONO_TOKEN_TYPE_SPEC:
7335 return g_strdup_printf ("Typespec 0x%08x", type_token);
7337 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
7342 mono_assembly_name_from_token (MonoImage *image, guint32 type_token)
7344 if (image_is_dynamic (image))
7345 return g_strdup_printf ("DynamicAssembly %s", image->name);
7347 switch (type_token & 0xff000000){
7348 case MONO_TOKEN_TYPE_DEF:
7349 if (image->assembly)
7350 return mono_stringify_assembly_name (&image->assembly->aname);
7351 else if (image->assembly_name)
7352 return g_strdup (image->assembly_name);
7353 return g_strdup_printf ("%s", image->name ? image->name : "[Could not resolve assembly name");
7354 case MONO_TOKEN_TYPE_REF: {
7356 MonoAssemblyName aname;
7357 guint32 cols [MONO_TYPEREF_SIZE];
7358 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEREF];
7359 guint32 idx = mono_metadata_token_index (type_token);
7362 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
7364 if (!mono_verifier_verify_typeref_row (image, idx - 1, &error)) {
7365 char *msg = g_strdup_printf ("Invalid type token 0x%08x due to '%s'", type_token, mono_error_get_message (&error));
7366 mono_error_cleanup (&error);
7369 mono_metadata_decode_row (t, idx-1, cols, MONO_TYPEREF_SIZE);
7371 idx = cols [MONO_TYPEREF_SCOPE] >> MONO_RESOLUTION_SCOPE_BITS;
7372 switch (cols [MONO_TYPEREF_SCOPE] & MONO_RESOLUTION_SCOPE_MASK) {
7373 case MONO_RESOLUTION_SCOPE_MODULE:
7375 return g_strdup ("");
7376 case MONO_RESOLUTION_SCOPE_MODULEREF:
7378 return g_strdup ("");
7379 case MONO_RESOLUTION_SCOPE_TYPEREF:
7381 return g_strdup ("");
7382 case MONO_RESOLUTION_SCOPE_ASSEMBLYREF:
7383 mono_assembly_get_assemblyref (image, idx - 1, &aname);
7384 return mono_stringify_assembly_name (&aname);
7386 g_assert_not_reached ();
7390 case MONO_TOKEN_TYPE_SPEC:
7392 return g_strdup ("");
7394 g_assert_not_reached ();
7401 * mono_class_get_full:
7402 * @image: the image where the class resides
7403 * @type_token: the token for the class
7404 * @context: the generic context used to evaluate generic instantiations in
7405 * @deprecated: Functions that expose MonoGenericContext are going away in mono 4.0
7407 * Returns: The MonoClass that represents @type_token in @image
7410 mono_class_get_full (MonoImage *image, guint32 type_token, MonoGenericContext *context)
7414 klass = mono_class_get_checked (image, type_token, &error);
7416 if (klass && context && mono_metadata_token_table (type_token) == MONO_TABLE_TYPESPEC)
7417 klass = mono_class_inflate_generic_class_checked (klass, context, &error);
7419 g_assert (mono_error_ok (&error)); /* FIXME deprecate this function and forbit the runtime from using it. */
7425 mono_class_get_and_inflate_typespec_checked (MonoImage *image, guint32 type_token, MonoGenericContext *context, MonoError *error)
7429 mono_error_init (error);
7430 klass = mono_class_get_checked (image, type_token, error);
7432 if (klass && context && mono_metadata_token_table (type_token) == MONO_TABLE_TYPESPEC)
7433 klass = mono_class_inflate_generic_class_checked (klass, context, error);
7438 * mono_class_get_checked:
7439 * @image: the image where the class resides
7440 * @type_token: the token for the class
7441 * @error: error object to return any error
7443 * Returns: The MonoClass that represents @type_token in @image, or NULL on error.
7446 mono_class_get_checked (MonoImage *image, guint32 type_token, MonoError *error)
7448 MonoClass *klass = NULL;
7450 mono_error_init (error);
7452 if (image_is_dynamic (image)) {
7453 int table = mono_metadata_token_table (type_token);
7455 if (table != MONO_TABLE_TYPEDEF && table != MONO_TABLE_TYPEREF && table != MONO_TABLE_TYPESPEC) {
7456 mono_error_set_bad_image (error, image,"Bad token table for dynamic image: %x", table);
7459 klass = (MonoClass *)mono_lookup_dynamic_token (image, type_token, NULL); /*FIXME proper error handling*/
7463 switch (type_token & 0xff000000){
7464 case MONO_TOKEN_TYPE_DEF:
7465 klass = mono_class_create_from_typedef (image, type_token, error);
7467 case MONO_TOKEN_TYPE_REF:
7468 klass = mono_class_from_typeref_checked (image, type_token, error);
7470 case MONO_TOKEN_TYPE_SPEC:
7471 klass = mono_class_create_from_typespec (image, type_token, NULL, error);
7474 mono_error_set_bad_image (error, image, "Unknown type token %x", type_token & 0xff000000);
7478 /* Generic case, should be avoided for when a better error is possible. */
7479 if (!klass && mono_error_ok (error)) {
7480 char *name = mono_class_name_from_token (image, type_token);
7481 char *assembly = mono_assembly_name_from_token (image, type_token);
7482 mono_error_set_type_load_name (error, name, assembly, "Could not resolve type with token %08x", type_token);
7490 * mono_type_get_checked:
7491 * @image: the image where the type resides
7492 * @type_token: the token for the type
7493 * @context: the generic context used to evaluate generic instantiations in
7494 * @error: Error handling context
7496 * This functions exists to fullfill the fact that sometimes it's desirable to have access to the
7498 * Returns: The MonoType that represents @type_token in @image
7501 mono_type_get_checked (MonoImage *image, guint32 type_token, MonoGenericContext *context, MonoError *error)
7503 MonoType *type = NULL;
7504 gboolean inflated = FALSE;
7506 mono_error_init (error);
7508 //FIXME: this will not fix the very issue for which mono_type_get_full exists -but how to do it then?
7509 if (image_is_dynamic (image))
7510 return mono_class_get_type ((MonoClass *)mono_lookup_dynamic_token (image, type_token, context));
7512 if ((type_token & 0xff000000) != MONO_TOKEN_TYPE_SPEC) {
7513 MonoClass *klass = mono_class_get_checked (image, type_token, error);
7516 mono_loader_assert_no_error ();
7521 return mono_class_get_type (klass);
7524 type = mono_type_retrieve_from_typespec (image, type_token, context, &inflated, error);
7527 mono_loader_assert_no_error ();
7532 MonoType *tmp = type;
7533 type = mono_class_get_type (mono_class_from_mono_type (type));
7534 /* FIXME: This is a workaround fo the fact that a typespec token sometimes reference to the generic type definition.
7535 * A MonoClass::byval_arg of a generic type definion has type CLASS.
7536 * Some parts of mono create a GENERICINST to reference a generic type definition and this generates confict with byval_arg.
7538 * The long term solution is to chaise this places and make then set MonoType::type correctly.
7540 if (type->type != tmp->type)
7543 mono_metadata_free_type (tmp);
7550 * @image: image where the class token will be looked up.
7551 * @type_token: a type token from the image
7553 * Returns the MonoClass with the given @type_token on the @image
7556 mono_class_get (MonoImage *image, guint32 type_token)
7558 return mono_class_get_full (image, type_token, NULL);
7562 * mono_image_init_name_cache:
7564 * Initializes the class name cache stored in image->name_cache.
7566 * LOCKING: Acquires the corresponding image lock.
7569 mono_image_init_name_cache (MonoImage *image)
7571 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEDEF];
7572 guint32 cols [MONO_TYPEDEF_SIZE];
7575 guint32 i, visib, nspace_index;
7576 GHashTable *name_cache2, *nspace_table, *the_name_cache;
7578 if (image->name_cache)
7581 the_name_cache = g_hash_table_new (g_str_hash, g_str_equal);
7583 if (image_is_dynamic (image)) {
7584 mono_image_lock (image);
7585 if (image->name_cache) {
7586 /* Somebody initialized it before us */
7587 g_hash_table_destroy (the_name_cache);
7589 mono_atomic_store_release (&image->name_cache, the_name_cache);
7591 mono_image_unlock (image);
7595 /* Temporary hash table to avoid lookups in the nspace_table */
7596 name_cache2 = g_hash_table_new (NULL, NULL);
7598 for (i = 1; i <= t->rows; ++i) {
7599 mono_metadata_decode_row (t, i - 1, cols, MONO_TYPEDEF_SIZE);
7600 visib = cols [MONO_TYPEDEF_FLAGS] & TYPE_ATTRIBUTE_VISIBILITY_MASK;
7602 * Nested types are accessed from the nesting name. We use the fact that nested types use different visibility flags
7603 * than toplevel types, thus avoiding the need to grovel through the NESTED_TYPE table
7605 if (visib >= TYPE_ATTRIBUTE_NESTED_PUBLIC && visib <= TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM)
7607 name = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
7608 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
7610 nspace_index = cols [MONO_TYPEDEF_NAMESPACE];
7611 nspace_table = (GHashTable *)g_hash_table_lookup (name_cache2, GUINT_TO_POINTER (nspace_index));
7612 if (!nspace_table) {
7613 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
7614 g_hash_table_insert (the_name_cache, (char*)nspace, nspace_table);
7615 g_hash_table_insert (name_cache2, GUINT_TO_POINTER (nspace_index),
7618 g_hash_table_insert (nspace_table, (char *) name, GUINT_TO_POINTER (i));
7621 /* Load type names from EXPORTEDTYPES table */
7623 MonoTableInfo *t = &image->tables [MONO_TABLE_EXPORTEDTYPE];
7624 guint32 cols [MONO_EXP_TYPE_SIZE];
7627 for (i = 0; i < t->rows; ++i) {
7628 mono_metadata_decode_row (t, i, cols, MONO_EXP_TYPE_SIZE);
7630 guint32 impl = cols [MONO_EXP_TYPE_IMPLEMENTATION];
7631 if ((impl & MONO_IMPLEMENTATION_MASK) == MONO_IMPLEMENTATION_EXP_TYPE)
7635 name = mono_metadata_string_heap (image, cols [MONO_EXP_TYPE_NAME]);
7636 nspace = mono_metadata_string_heap (image, cols [MONO_EXP_TYPE_NAMESPACE]);
7638 nspace_index = cols [MONO_EXP_TYPE_NAMESPACE];
7639 nspace_table = (GHashTable *)g_hash_table_lookup (name_cache2, GUINT_TO_POINTER (nspace_index));
7640 if (!nspace_table) {
7641 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
7642 g_hash_table_insert (the_name_cache, (char*)nspace, nspace_table);
7643 g_hash_table_insert (name_cache2, GUINT_TO_POINTER (nspace_index),
7646 g_hash_table_insert (nspace_table, (char *) name, GUINT_TO_POINTER (mono_metadata_make_token (MONO_TABLE_EXPORTEDTYPE, i + 1)));
7650 g_hash_table_destroy (name_cache2);
7652 mono_image_lock (image);
7653 if (image->name_cache) {
7654 /* Somebody initialized it before us */
7655 g_hash_table_destroy (the_name_cache);
7657 mono_atomic_store_release (&image->name_cache, the_name_cache);
7659 mono_image_unlock (image);
7662 /*FIXME Only dynamic assemblies should allow this operation.*/
7664 mono_image_add_to_name_cache (MonoImage *image, const char *nspace,
7665 const char *name, guint32 index)
7667 GHashTable *nspace_table;
7668 GHashTable *name_cache;
7671 mono_image_init_name_cache (image);
7672 mono_image_lock (image);
7674 name_cache = image->name_cache;
7675 if (!(nspace_table = (GHashTable *)g_hash_table_lookup (name_cache, nspace))) {
7676 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
7677 g_hash_table_insert (name_cache, (char *)nspace, (char *)nspace_table);
7680 if ((old_index = GPOINTER_TO_UINT (g_hash_table_lookup (nspace_table, (char*) name))))
7681 g_error ("overrwritting old token %x on image %s for type %s::%s", old_index, image->name, nspace, name);
7683 g_hash_table_insert (nspace_table, (char *) name, GUINT_TO_POINTER (index));
7685 mono_image_unlock (image);
7694 find_nocase (gpointer key, gpointer value, gpointer user_data)
7696 char *name = (char*)key;
7697 FindUserData *data = (FindUserData*)user_data;
7699 if (!data->value && (mono_utf8_strcasecmp (name, (char*)data->key) == 0))
7700 data->value = value;
7704 * mono_class_from_name_case:
7705 * @image: The MonoImage where the type is looked up in
7706 * @name_space: the type namespace
7707 * @name: the type short name.
7708 * @deprecated: use the mono_class_from_name_case_checked variant instead.
7710 * Obtains a MonoClass with a given namespace and a given name which
7711 * is located in the given MonoImage. The namespace and name
7712 * lookups are case insensitive.
7715 mono_class_from_name_case (MonoImage *image, const char* name_space, const char *name)
7718 MonoClass *res = mono_class_from_name_case_checked (image, name_space, name, &error);
7719 mono_error_cleanup (&error);
7725 * mono_class_from_name_case:
7726 * @image: The MonoImage where the type is looked up in
7727 * @name_space: the type namespace
7728 * @name: the type short name.
7731 * Obtains a MonoClass with a given namespace and a given name which
7732 * is located in the given MonoImage. The namespace and name
7733 * lookups are case insensitive.
7735 * Returns: The MonoClass if the given namespace and name were found, or NULL if it
7736 * was not found. The @error object will contain information about the problem
7740 mono_class_from_name_case_checked (MonoImage *image, const char *name_space, const char *name, MonoError *error)
7742 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEDEF];
7743 guint32 cols [MONO_TYPEDEF_SIZE];
7748 mono_error_init (error);
7750 if (image_is_dynamic (image)) {
7752 FindUserData user_data;
7754 mono_image_init_name_cache (image);
7755 mono_image_lock (image);
7757 user_data.key = name_space;
7758 user_data.value = NULL;
7759 g_hash_table_foreach (image->name_cache, find_nocase, &user_data);
7761 if (user_data.value) {
7762 GHashTable *nspace_table = (GHashTable*)user_data.value;
7764 user_data.key = name;
7765 user_data.value = NULL;
7767 g_hash_table_foreach (nspace_table, find_nocase, &user_data);
7769 if (user_data.value)
7770 token = GPOINTER_TO_UINT (user_data.value);
7773 mono_image_unlock (image);
7776 return mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | token, error);
7782 /* add a cache if needed */
7783 for (i = 1; i <= t->rows; ++i) {
7784 mono_metadata_decode_row (t, i - 1, cols, MONO_TYPEDEF_SIZE);
7785 visib = cols [MONO_TYPEDEF_FLAGS] & TYPE_ATTRIBUTE_VISIBILITY_MASK;
7787 * Nested types are accessed from the nesting name. We use the fact that nested types use different visibility flags
7788 * than toplevel types, thus avoiding the need to grovel through the NESTED_TYPE table
7790 if (visib >= TYPE_ATTRIBUTE_NESTED_PUBLIC && visib <= TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM)
7792 n = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
7793 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
7794 if (mono_utf8_strcasecmp (n, name) == 0 && mono_utf8_strcasecmp (nspace, name_space) == 0)
7795 return mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | i, error);
7801 return_nested_in (MonoClass *klass, char *nested)
7804 char *s = strchr (nested, '/');
7805 gpointer iter = NULL;
7812 while ((found = mono_class_get_nested_types (klass, &iter))) {
7813 if (strcmp (found->name, nested) == 0) {
7815 return return_nested_in (found, s);
7823 search_modules (MonoImage *image, const char *name_space, const char *name, MonoError *error)
7825 MonoTableInfo *file_table = &image->tables [MONO_TABLE_FILE];
7826 MonoImage *file_image;
7830 mono_error_init (error);
7833 * The EXPORTEDTYPES table only contains public types, so have to search the
7835 * Note: image->modules contains the contents of the MODULEREF table, while
7836 * the real module list is in the FILE table.
7838 for (i = 0; i < file_table->rows; i++) {
7839 guint32 cols [MONO_FILE_SIZE];
7840 mono_metadata_decode_row (file_table, i, cols, MONO_FILE_SIZE);
7841 if (cols [MONO_FILE_FLAGS] == FILE_CONTAINS_NO_METADATA)
7844 file_image = mono_image_load_file_for_image (image, i + 1);
7846 klass = mono_class_from_name_checked (file_image, name_space, name, error);
7847 if (klass || !is_ok (error))
7856 mono_class_from_name_checked_aux (MonoImage *image, const char* name_space, const char *name, GHashTable* visited_images, MonoError *error)
7858 GHashTable *nspace_table;
7859 MonoImage *loaded_image;
7866 mono_error_init (error);
7868 // Checking visited images avoids stack overflows when cyclic references exist.
7869 if (g_hash_table_lookup (visited_images, image))
7872 g_hash_table_insert (visited_images, image, GUINT_TO_POINTER(1));
7874 if ((nested = strchr (name, '/'))) {
7875 int pos = nested - name;
7876 int len = strlen (name);
7879 memcpy (buf, name, len + 1);
7881 nested = buf + pos + 1;
7885 /* FIXME: get_class_from_name () can't handle types in the EXPORTEDTYPE table */
7886 if (get_class_from_name && image->tables [MONO_TABLE_EXPORTEDTYPE].rows == 0) {
7887 gboolean res = get_class_from_name (image, name_space, name, &klass);
7890 klass = search_modules (image, name_space, name, error);
7895 return klass ? return_nested_in (klass, nested) : NULL;
7901 mono_image_init_name_cache (image);
7902 mono_image_lock (image);
7904 nspace_table = (GHashTable *)g_hash_table_lookup (image->name_cache, name_space);
7907 token = GPOINTER_TO_UINT (g_hash_table_lookup (nspace_table, name));
7909 mono_image_unlock (image);
7911 if (!token && image_is_dynamic (image) && image->modules) {
7912 /* Search modules as well */
7913 for (i = 0; i < image->module_count; ++i) {
7914 MonoImage *module = image->modules [i];
7916 klass = mono_class_from_name_checked (module, name_space, name, error);
7917 if (klass || !is_ok (error))
7923 klass = search_modules (image, name_space, name, error);
7924 if (klass || !is_ok (error))
7931 if (mono_metadata_token_table (token) == MONO_TABLE_EXPORTEDTYPE) {
7932 MonoTableInfo *t = &image->tables [MONO_TABLE_EXPORTEDTYPE];
7933 guint32 cols [MONO_EXP_TYPE_SIZE];
7936 idx = mono_metadata_token_index (token);
7938 mono_metadata_decode_row (t, idx - 1, cols, MONO_EXP_TYPE_SIZE);
7940 impl = cols [MONO_EXP_TYPE_IMPLEMENTATION];
7941 if ((impl & MONO_IMPLEMENTATION_MASK) == MONO_IMPLEMENTATION_FILE) {
7942 loaded_image = mono_assembly_load_module (image->assembly, impl >> MONO_IMPLEMENTATION_BITS);
7945 klass = mono_class_from_name_checked_aux (loaded_image, name_space, name, visited_images, error);
7947 return klass ? return_nested_in (klass, nested) : NULL;
7949 } else if ((impl & MONO_IMPLEMENTATION_MASK) == MONO_IMPLEMENTATION_ASSEMBLYREF) {
7950 guint32 assembly_idx;
7952 assembly_idx = impl >> MONO_IMPLEMENTATION_BITS;
7954 mono_assembly_load_reference (image, assembly_idx - 1);
7955 g_assert (image->references [assembly_idx - 1]);
7956 if (image->references [assembly_idx - 1] == (gpointer)-1)
7958 klass = mono_class_from_name_checked_aux (image->references [assembly_idx - 1]->image, name_space, name, visited_images, error);
7960 return klass ? return_nested_in (klass, nested) : NULL;
7963 g_assert_not_reached ();
7967 token = MONO_TOKEN_TYPE_DEF | token;
7969 klass = mono_class_get_checked (image, token, error);
7971 return return_nested_in (klass, nested);
7976 * mono_class_from_name_checked:
7977 * @image: The MonoImage where the type is looked up in
7978 * @name_space: the type namespace
7979 * @name: the type short name.
7981 * Obtains a MonoClass with a given namespace and a given name which
7982 * is located in the given MonoImage.
7984 * Works like mono_class_from_name, but error handling is tricky. It can return NULL and have no error
7985 * set if the class was not found or it will return NULL and set the error if there was a loading error.
7988 mono_class_from_name_checked (MonoImage *image, const char* name_space, const char *name, MonoError *error)
7991 GHashTable *visited_images;
7993 visited_images = g_hash_table_new (g_direct_hash, g_direct_equal);
7995 klass = mono_class_from_name_checked_aux (image, name_space, name, visited_images, error);
7997 g_hash_table_destroy (visited_images);
8003 * mono_class_from_name:
8004 * @image: The MonoImage where the type is looked up in
8005 * @name_space: the type namespace
8006 * @name: the type short name.
8008 * Obtains a MonoClass with a given namespace and a given name which
8009 * is located in the given MonoImage.
8011 * To reference nested classes, use the "/" character as a separator.
8012 * For example use "Foo/Bar" to reference the class Bar that is nested
8013 * inside Foo, like this: "class Foo { class Bar {} }".
8016 mono_class_from_name (MonoImage *image, const char* name_space, const char *name)
8021 klass = mono_class_from_name_checked (image, name_space, name, &error);
8022 mono_error_cleanup (&error); /* FIXME Don't swallow the error */
8028 * mono_class_load_from_name:
8029 * @image: The MonoImage where the type is looked up in
8030 * @name_space: the type namespace
8031 * @name: the type short name.
8033 * This function works exactly like mono_class_from_name but it will abort if the class is not found.
8034 * This function should be used by the runtime for critical types to which there's no way to recover but crash
8035 * If they are missing. Thing of System.Object or System.String.
8038 mono_class_load_from_name (MonoImage *image, const char* name_space, const char *name)
8043 klass = mono_class_from_name_checked (image, name_space, name, &error);
8045 g_error ("Runtime critical type %s.%s not found", name_space, name);
8046 if (!mono_error_ok (&error))
8047 g_error ("Could not load runtime critical type %s.%s due to %s", name_space, name, mono_error_get_message (&error));
8052 * mono_class_try_load_from_name:
8053 * @image: The MonoImage where the type is looked up in
8054 * @name_space: the type namespace
8055 * @name: the type short name.
8057 * This function tries to load a type, returning the class was found or NULL otherwise.
8058 * This function should be used by the runtime when probing for optional types, those that could have being linked out.
8060 * Big design consideration. This function aborts if there was an error loading the type. This prevents us from missing
8061 * a type that we would otherwise assume to be available but was not due some error.
8065 mono_class_try_load_from_name (MonoImage *image, const char* name_space, const char *name)
8070 klass = mono_class_from_name_checked (image, name_space, name, &error);
8071 if (!mono_error_ok (&error))
8072 g_error ("Could not load runtime critical type %s.%s due to %s", name_space, name, mono_error_get_message (&error));
8078 * mono_class_is_subclass_of:
8079 * @klass: class to probe if it is a subclass of another one
8080 * @klassc: the class we suspect is the base class
8081 * @check_interfaces: whether we should perform interface checks
8083 * This method determines whether @klass is a subclass of @klassc.
8085 * If the @check_interfaces flag is set, then if @klassc is an interface
8086 * this method return TRUE if the @klass implements the interface or
8087 * if @klass is an interface, if one of its base classes is @klass.
8089 * If @check_interfaces is false then, then if @klass is not an interface
8090 * then it returns TRUE if the @klass is a subclass of @klassc.
8092 * if @klass is an interface and @klassc is System.Object, then this function
8097 mono_class_is_subclass_of (MonoClass *klass, MonoClass *klassc,
8098 gboolean check_interfaces)
8100 /*FIXME test for interfaces with variant generic arguments*/
8102 if (check_interfaces && MONO_CLASS_IS_INTERFACE (klassc) && !MONO_CLASS_IS_INTERFACE (klass)) {
8103 if (MONO_CLASS_IMPLEMENTS_INTERFACE (klass, klassc->interface_id))
8105 } else if (check_interfaces && MONO_CLASS_IS_INTERFACE (klassc) && MONO_CLASS_IS_INTERFACE (klass)) {
8108 for (i = 0; i < klass->interface_count; i ++) {
8109 MonoClass *ic = klass->interfaces [i];
8114 if (!MONO_CLASS_IS_INTERFACE (klass) && mono_class_has_parent (klass, klassc))
8119 * MS.NET thinks interfaces are a subclass of Object, so we think it as
8122 if (klassc == mono_defaults.object_class)
8129 mono_type_is_generic_argument (MonoType *type)
8131 return type->type == MONO_TYPE_VAR || type->type == MONO_TYPE_MVAR;
8135 mono_class_has_variant_generic_params (MonoClass *klass)
8138 MonoGenericContainer *container;
8140 if (!klass->generic_class)
8143 container = klass->generic_class->container_class->generic_container;
8145 for (i = 0; i < container->type_argc; ++i)
8146 if (mono_generic_container_get_param_info (container, i)->flags & (MONO_GEN_PARAM_VARIANT|MONO_GEN_PARAM_COVARIANT))
8153 mono_gparam_is_reference_conversible (MonoClass *target, MonoClass *candidate, gboolean check_for_reference_conv)
8155 if (target == candidate)
8158 if (check_for_reference_conv &&
8159 mono_type_is_generic_argument (&target->byval_arg) &&
8160 mono_type_is_generic_argument (&candidate->byval_arg)) {
8161 MonoGenericParam *gparam = candidate->byval_arg.data.generic_param;
8162 MonoGenericParamInfo *pinfo = mono_generic_param_info (gparam);
8164 if (!pinfo || (pinfo->flags & GENERIC_PARAMETER_ATTRIBUTE_REFERENCE_TYPE_CONSTRAINT) == 0)
8167 if (!mono_class_is_assignable_from (target, candidate))
8173 * @container the generic container from the GTD
8174 * @klass: the class to be assigned to
8175 * @oklass: the source class
8177 * Both @klass and @oklass must be instances of the same generic interface.
8179 * Returns: TRUE if @klass can be assigned to a @klass variable
8182 mono_class_is_variant_compatible (MonoClass *klass, MonoClass *oklass, gboolean check_for_reference_conv)
8185 MonoType **klass_argv, **oklass_argv;
8186 MonoClass *klass_gtd = mono_class_get_generic_type_definition (klass);
8187 MonoGenericContainer *container = klass_gtd->generic_container;
8189 if (klass == oklass)
8192 /*Viable candidates are instances of the same generic interface*/
8193 if (mono_class_get_generic_type_definition (oklass) != klass_gtd || oklass == klass_gtd)
8196 klass_argv = &klass->generic_class->context.class_inst->type_argv [0];
8197 oklass_argv = &oklass->generic_class->context.class_inst->type_argv [0];
8199 for (j = 0; j < container->type_argc; ++j) {
8200 MonoClass *param1_class = mono_class_from_mono_type (klass_argv [j]);
8201 MonoClass *param2_class = mono_class_from_mono_type (oklass_argv [j]);
8203 if (param1_class->valuetype != param2_class->valuetype || (param1_class->valuetype && param1_class != param2_class))
8207 * The _VARIANT and _COVARIANT constants should read _COVARIANT and
8208 * _CONTRAVARIANT, but they are in a public header so we can't fix it.
8210 if (param1_class != param2_class) {
8211 if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_VARIANT) {
8212 if (!mono_gparam_is_reference_conversible (param1_class, param2_class, check_for_reference_conv))
8214 } else if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_COVARIANT) {
8215 if (!mono_gparam_is_reference_conversible (param2_class, param1_class, check_for_reference_conv))
8225 mono_gparam_is_assignable_from (MonoClass *target, MonoClass *candidate)
8227 MonoGenericParam *gparam, *ogparam;
8228 MonoGenericParamInfo *tinfo, *cinfo;
8229 MonoClass **candidate_class;
8230 gboolean class_constraint_satisfied, valuetype_constraint_satisfied;
8233 if (target == candidate)
8235 if (target->byval_arg.type != candidate->byval_arg.type)
8238 gparam = target->byval_arg.data.generic_param;
8239 ogparam = candidate->byval_arg.data.generic_param;
8240 tinfo = mono_generic_param_info (gparam);
8241 cinfo = mono_generic_param_info (ogparam);
8243 class_constraint_satisfied = FALSE;
8244 valuetype_constraint_satisfied = FALSE;
8246 /*candidate must have a super set of target's special constraints*/
8247 tmask = tinfo->flags & GENERIC_PARAMETER_ATTRIBUTE_SPECIAL_CONSTRAINTS_MASK;
8248 cmask = cinfo->flags & GENERIC_PARAMETER_ATTRIBUTE_SPECIAL_CONSTRAINTS_MASK;
8250 if (cinfo->constraints) {
8251 for (candidate_class = cinfo->constraints; *candidate_class; ++candidate_class) {
8252 MonoClass *cc = *candidate_class;
8254 if (mono_type_is_reference (&cc->byval_arg) && !MONO_CLASS_IS_INTERFACE (cc))
8255 class_constraint_satisfied = TRUE;
8256 else if (!mono_type_is_reference (&cc->byval_arg) && !MONO_CLASS_IS_INTERFACE (cc))
8257 valuetype_constraint_satisfied = TRUE;
8260 class_constraint_satisfied |= (cmask & GENERIC_PARAMETER_ATTRIBUTE_REFERENCE_TYPE_CONSTRAINT) != 0;
8261 valuetype_constraint_satisfied |= (cmask & GENERIC_PARAMETER_ATTRIBUTE_VALUE_TYPE_CONSTRAINT) != 0;
8263 if ((tmask & GENERIC_PARAMETER_ATTRIBUTE_REFERENCE_TYPE_CONSTRAINT) && !class_constraint_satisfied)
8265 if ((tmask & GENERIC_PARAMETER_ATTRIBUTE_VALUE_TYPE_CONSTRAINT) && !valuetype_constraint_satisfied)
8267 if ((tmask & GENERIC_PARAMETER_ATTRIBUTE_CONSTRUCTOR_CONSTRAINT) && !((cmask & GENERIC_PARAMETER_ATTRIBUTE_CONSTRUCTOR_CONSTRAINT) ||
8268 valuetype_constraint_satisfied)) {
8273 /*candidate type constraints must be a superset of target's*/
8274 if (tinfo->constraints) {
8275 MonoClass **target_class;
8276 for (target_class = tinfo->constraints; *target_class; ++target_class) {
8277 MonoClass *tc = *target_class;
8280 * A constraint from @target might inflate into @candidate itself and in that case we don't need
8281 * check it's constraints since it satisfy the constraint by itself.
8283 if (mono_metadata_type_equal (&tc->byval_arg, &candidate->byval_arg))
8286 if (!cinfo->constraints)
8289 for (candidate_class = cinfo->constraints; *candidate_class; ++candidate_class) {
8290 MonoClass *cc = *candidate_class;
8292 if (mono_class_is_assignable_from (tc, cc))
8296 * This happens when we have the following:
8298 * Bar<K> where K : IFace
8299 * Foo<T, U> where T : U where U : IFace
8301 * Bar<T> <- T here satisfy K constraint transitively through to U's constraint
8304 if (mono_type_is_generic_argument (&cc->byval_arg)) {
8305 if (mono_gparam_is_assignable_from (target, cc))
8309 if (!*candidate_class)
8314 /*candidate itself must have a constraint that satisfy target*/
8315 if (cinfo->constraints) {
8316 for (candidate_class = cinfo->constraints; *candidate_class; ++candidate_class) {
8317 MonoClass *cc = *candidate_class;
8318 if (mono_class_is_assignable_from (target, cc))
8326 * mono_class_is_assignable_from:
8327 * @klass: the class to be assigned to
8328 * @oklass: the source class
8330 * Returns: TRUE if an instance of object oklass can be assigned to an
8331 * instance of object @klass
8334 mono_class_is_assignable_from (MonoClass *klass, MonoClass *oklass)
8336 /*FIXME this will cause a lot of irrelevant stuff to be loaded.*/
8338 mono_class_init (klass);
8340 if (!oklass->inited)
8341 mono_class_init (oklass);
8343 if (mono_class_has_failure (klass) || mono_class_has_failure (oklass))
8346 if (mono_type_is_generic_argument (&klass->byval_arg)) {
8347 if (!mono_type_is_generic_argument (&oklass->byval_arg))
8349 return mono_gparam_is_assignable_from (klass, oklass);
8352 if (MONO_CLASS_IS_INTERFACE (klass)) {
8353 if ((oklass->byval_arg.type == MONO_TYPE_VAR) || (oklass->byval_arg.type == MONO_TYPE_MVAR)) {
8354 MonoGenericParam *gparam = oklass->byval_arg.data.generic_param;
8355 MonoClass **constraints = mono_generic_container_get_param_info (gparam->owner, gparam->num)->constraints;
8359 for (i = 0; constraints [i]; ++i) {
8360 if (mono_class_is_assignable_from (klass, constraints [i]))
8368 /* interface_offsets might not be set for dynamic classes */
8369 if (oklass->ref_info_handle && !oklass->interface_bitmap)
8371 * oklass might be a generic type parameter but they have
8372 * interface_offsets set.
8374 return mono_reflection_call_is_assignable_to (oklass, klass);
8375 if (!oklass->interface_bitmap)
8376 /* Happens with generic instances of not-yet created dynamic types */
8378 if (MONO_CLASS_IMPLEMENTS_INTERFACE (oklass, klass->interface_id))
8381 if (mono_class_has_variant_generic_params (klass)) {
8384 mono_class_setup_interfaces (oklass, &error);
8385 if (!mono_error_ok (&error)) {
8386 mono_error_cleanup (&error);
8390 /*klass is a generic variant interface, We need to extract from oklass a list of ifaces which are viable candidates.*/
8391 for (i = 0; i < oklass->interface_offsets_count; ++i) {
8392 MonoClass *iface = oklass->interfaces_packed [i];
8394 if (mono_class_is_variant_compatible (klass, iface, FALSE))
8399 } else if (klass->delegate) {
8400 if (mono_class_has_variant_generic_params (klass) && mono_class_is_variant_compatible (klass, oklass, FALSE))
8402 }else if (klass->rank) {
8403 MonoClass *eclass, *eoclass;
8405 if (oklass->rank != klass->rank)
8408 /* vectors vs. one dimensional arrays */
8409 if (oklass->byval_arg.type != klass->byval_arg.type)
8412 eclass = klass->cast_class;
8413 eoclass = oklass->cast_class;
8416 * a is b does not imply a[] is b[] when a is a valuetype, and
8417 * b is a reference type.
8420 if (eoclass->valuetype) {
8421 if ((eclass == mono_defaults.enum_class) ||
8422 (eclass == mono_defaults.enum_class->parent) ||
8423 (eclass == mono_defaults.object_class))
8427 return mono_class_is_assignable_from (klass->cast_class, oklass->cast_class);
8428 } else if (mono_class_is_nullable (klass)) {
8429 if (mono_class_is_nullable (oklass))
8430 return mono_class_is_assignable_from (klass->cast_class, oklass->cast_class);
8432 return mono_class_is_assignable_from (klass->cast_class, oklass);
8433 } else if (klass == mono_defaults.object_class)
8436 return mono_class_has_parent (oklass, klass);
8439 /*Check if @oklass is variant compatible with @klass.*/
8441 mono_class_is_variant_compatible_slow (MonoClass *klass, MonoClass *oklass)
8444 MonoType **klass_argv, **oklass_argv;
8445 MonoClass *klass_gtd = mono_class_get_generic_type_definition (klass);
8446 MonoGenericContainer *container = klass_gtd->generic_container;
8448 /*Viable candidates are instances of the same generic interface*/
8449 if (mono_class_get_generic_type_definition (oklass) != klass_gtd || oklass == klass_gtd)
8452 klass_argv = &klass->generic_class->context.class_inst->type_argv [0];
8453 oklass_argv = &oklass->generic_class->context.class_inst->type_argv [0];
8455 for (j = 0; j < container->type_argc; ++j) {
8456 MonoClass *param1_class = mono_class_from_mono_type (klass_argv [j]);
8457 MonoClass *param2_class = mono_class_from_mono_type (oklass_argv [j]);
8459 if (param1_class->valuetype != param2_class->valuetype)
8463 * The _VARIANT and _COVARIANT constants should read _COVARIANT and
8464 * _CONTRAVARIANT, but they are in a public header so we can't fix it.
8466 if (param1_class != param2_class) {
8467 if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_VARIANT) {
8468 if (!mono_class_is_assignable_from_slow (param1_class, param2_class))
8470 } else if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_COVARIANT) {
8471 if (!mono_class_is_assignable_from_slow (param2_class, param1_class))
8479 /*Check if @candidate implements the interface @target*/
8481 mono_class_implement_interface_slow (MonoClass *target, MonoClass *candidate)
8485 gboolean is_variant = mono_class_has_variant_generic_params (target);
8487 if (is_variant && MONO_CLASS_IS_INTERFACE (candidate)) {
8488 if (mono_class_is_variant_compatible_slow (target, candidate))
8493 if (candidate == target)
8496 /*A TypeBuilder can have more interfaces on tb->interfaces than on candidate->interfaces*/
8497 if (image_is_dynamic (candidate->image) && !candidate->wastypebuilder) {
8498 MonoReflectionTypeBuilder *tb = (MonoReflectionTypeBuilder *)mono_class_get_ref_info (candidate);
8500 if (tb && tb->interfaces) {
8501 for (j = mono_array_length (tb->interfaces) - 1; j >= 0; --j) {
8502 MonoReflectionType *iface = mono_array_get (tb->interfaces, MonoReflectionType*, j);
8503 MonoClass *iface_class;
8505 /* we can't realize the type here since it can do pretty much anything. */
8508 iface_class = mono_class_from_mono_type (iface->type);
8509 if (iface_class == target)
8511 if (is_variant && mono_class_is_variant_compatible_slow (target, iface_class))
8513 if (mono_class_implement_interface_slow (target, iface_class))
8518 /*setup_interfaces don't mono_class_init anything*/
8519 /*FIXME this doesn't handle primitive type arrays.
8520 ICollection<sbyte> x byte [] won't work because candidate->interfaces, for byte[], won't have IList<sbyte>.
8521 A possible way to fix this would be to move that to setup_interfaces from setup_interface_offsets.
8523 mono_class_setup_interfaces (candidate, &error);
8524 if (!mono_error_ok (&error)) {
8525 mono_error_cleanup (&error);
8529 for (i = 0; i < candidate->interface_count; ++i) {
8530 if (candidate->interfaces [i] == target)
8533 if (is_variant && mono_class_is_variant_compatible_slow (target, candidate->interfaces [i]))
8536 if (mono_class_implement_interface_slow (target, candidate->interfaces [i]))
8540 candidate = candidate->parent;
8541 } while (candidate);
8547 * Check if @oklass can be assigned to @klass.
8548 * This function does the same as mono_class_is_assignable_from but is safe to be used from mono_class_init context.
8551 mono_class_is_assignable_from_slow (MonoClass *target, MonoClass *candidate)
8553 if (candidate == target)
8555 if (target == mono_defaults.object_class)
8558 if (mono_class_has_parent (candidate, target))
8561 /*If target is not an interface there is no need to check them.*/
8562 if (MONO_CLASS_IS_INTERFACE (target))
8563 return mono_class_implement_interface_slow (target, candidate);
8565 if (target->delegate && mono_class_has_variant_generic_params (target))
8566 return mono_class_is_variant_compatible (target, candidate, FALSE);
8569 MonoClass *eclass, *eoclass;
8571 if (target->rank != candidate->rank)
8574 /* vectors vs. one dimensional arrays */
8575 if (target->byval_arg.type != candidate->byval_arg.type)
8578 eclass = target->cast_class;
8579 eoclass = candidate->cast_class;
8582 * a is b does not imply a[] is b[] when a is a valuetype, and
8583 * b is a reference type.
8586 if (eoclass->valuetype) {
8587 if ((eclass == mono_defaults.enum_class) ||
8588 (eclass == mono_defaults.enum_class->parent) ||
8589 (eclass == mono_defaults.object_class))
8593 return mono_class_is_assignable_from_slow (target->cast_class, candidate->cast_class);
8595 /*FIXME properly handle nullables */
8596 /*FIXME properly handle (M)VAR */
8601 * mono_class_get_cctor:
8602 * @klass: A MonoClass pointer
8604 * Returns: The static constructor of @klass if it exists, NULL otherwise.
8607 mono_class_get_cctor (MonoClass *klass)
8609 MonoCachedClassInfo cached_info;
8611 if (image_is_dynamic (klass->image)) {
8613 * has_cctor is not set for these classes because mono_class_init () is
8616 return mono_class_get_method_from_name_flags (klass, ".cctor", -1, METHOD_ATTRIBUTE_SPECIAL_NAME);
8619 if (!klass->has_cctor)
8622 if (mono_class_get_cached_class_info (klass, &cached_info)) {
8624 MonoMethod *result = mono_get_method_checked (klass->image, cached_info.cctor_token, klass, NULL, &error);
8625 if (!mono_error_ok (&error))
8626 g_error ("Could not lookup class cctor from cached metadata due to %s", mono_error_get_message (&error));
8630 if (klass->generic_class && !klass->methods)
8631 return mono_class_get_inflated_method (klass, mono_class_get_cctor (klass->generic_class->container_class));
8633 return mono_class_get_method_from_name_flags (klass, ".cctor", -1, METHOD_ATTRIBUTE_SPECIAL_NAME);
8637 * mono_class_get_finalizer:
8638 * @klass: The MonoClass pointer
8640 * Returns: The finalizer method of @klass if it exists, NULL otherwise.
8643 mono_class_get_finalizer (MonoClass *klass)
8645 MonoCachedClassInfo cached_info;
8648 mono_class_init (klass);
8649 if (!mono_class_has_finalizer (klass))
8652 if (mono_class_get_cached_class_info (klass, &cached_info)) {
8654 MonoMethod *result = mono_get_method_checked (cached_info.finalize_image, cached_info.finalize_token, NULL, NULL, &error);
8655 if (!mono_error_ok (&error))
8656 g_error ("Could not lookup finalizer from cached metadata due to %s", mono_error_get_message (&error));
8659 mono_class_setup_vtable (klass);
8660 return klass->vtable [finalize_slot];
8665 * mono_class_needs_cctor_run:
8666 * @klass: the MonoClass pointer
8667 * @caller: a MonoMethod describing the caller
8669 * Determines whenever the class has a static constructor and whenever it
8670 * needs to be called when executing CALLER.
8673 mono_class_needs_cctor_run (MonoClass *klass, MonoMethod *caller)
8677 method = mono_class_get_cctor (klass);
8679 return (method == caller) ? FALSE : TRUE;
8685 * mono_class_array_element_size:
8688 * Returns: The number of bytes an element of type @klass
8689 * uses when stored into an array.
8692 mono_class_array_element_size (MonoClass *klass)
8694 MonoType *type = &klass->byval_arg;
8697 switch (type->type) {
8700 case MONO_TYPE_BOOLEAN:
8704 case MONO_TYPE_CHAR:
8713 case MONO_TYPE_CLASS:
8714 case MONO_TYPE_STRING:
8715 case MONO_TYPE_OBJECT:
8716 case MONO_TYPE_SZARRAY:
8717 case MONO_TYPE_ARRAY:
8718 return sizeof (gpointer);
8723 case MONO_TYPE_VALUETYPE:
8724 if (type->data.klass->enumtype) {
8725 type = mono_class_enum_basetype (type->data.klass);
8726 klass = klass->element_class;
8729 return mono_class_instance_size (klass) - sizeof (MonoObject);
8730 case MONO_TYPE_GENERICINST:
8731 type = &type->data.generic_class->container_class->byval_arg;
8734 case MONO_TYPE_MVAR: {
8737 return mono_type_size (type, &align);
8739 case MONO_TYPE_VOID:
8743 g_error ("unknown type 0x%02x in mono_class_array_element_size", type->type);
8749 * mono_array_element_size:
8750 * @ac: pointer to a #MonoArrayClass
8752 * Returns: The size of single array element.
8755 mono_array_element_size (MonoClass *ac)
8757 g_assert (ac->rank);
8758 return ac->sizes.element_size;
8762 mono_ldtoken (MonoImage *image, guint32 token, MonoClass **handle_class,
8763 MonoGenericContext *context)
8766 gpointer res = mono_ldtoken_checked (image, token, handle_class, context, &error);
8767 g_assert (mono_error_ok (&error));
8772 mono_ldtoken_checked (MonoImage *image, guint32 token, MonoClass **handle_class,
8773 MonoGenericContext *context, MonoError *error)
8775 mono_error_init (error);
8777 if (image_is_dynamic (image)) {
8778 MonoClass *tmp_handle_class;
8779 gpointer obj = mono_lookup_dynamic_token_class (image, token, TRUE, &tmp_handle_class, context);
8781 g_assert (tmp_handle_class);
8783 *handle_class = tmp_handle_class;
8785 if (tmp_handle_class == mono_defaults.typehandle_class)
8786 return &((MonoClass*)obj)->byval_arg;
8791 switch (token & 0xff000000) {
8792 case MONO_TOKEN_TYPE_DEF:
8793 case MONO_TOKEN_TYPE_REF:
8794 case MONO_TOKEN_TYPE_SPEC: {
8797 *handle_class = mono_defaults.typehandle_class;
8798 type = mono_type_get_checked (image, token, context, error);
8802 mono_class_init (mono_class_from_mono_type (type));
8803 /* We return a MonoType* as handle */
8806 case MONO_TOKEN_FIELD_DEF: {
8808 guint32 type = mono_metadata_typedef_from_field (image, mono_metadata_token_index (token));
8810 mono_error_set_bad_image (error, image, "Bad ldtoken %x", token);
8814 *handle_class = mono_defaults.fieldhandle_class;
8815 klass = mono_class_get_and_inflate_typespec_checked (image, MONO_TOKEN_TYPE_DEF | type, context, error);
8819 mono_class_init (klass);
8820 return mono_class_get_field (klass, token);
8822 case MONO_TOKEN_METHOD_DEF:
8823 case MONO_TOKEN_METHOD_SPEC: {
8825 meth = mono_get_method_checked (image, token, NULL, context, error);
8827 *handle_class = mono_defaults.methodhandle_class;
8833 case MONO_TOKEN_MEMBER_REF: {
8834 guint32 cols [MONO_MEMBERREF_SIZE];
8836 mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], mono_metadata_token_index (token) - 1, cols, MONO_MEMBERREF_SIZE);
8837 sig = mono_metadata_blob_heap (image, cols [MONO_MEMBERREF_SIGNATURE]);
8838 mono_metadata_decode_blob_size (sig, &sig);
8839 if (*sig == 0x6) { /* it's a field */
8841 MonoClassField *field;
8842 field = mono_field_from_token_checked (image, token, &klass, context, error);
8844 *handle_class = mono_defaults.fieldhandle_class;
8848 meth = mono_get_method_checked (image, token, NULL, context, error);
8850 *handle_class = mono_defaults.methodhandle_class;
8855 mono_error_set_bad_image (error, image, "Bad ldtoken %x", token);
8861 * This function might need to call runtime functions so it can't be part
8862 * of the metadata library.
8864 static MonoLookupDynamicToken lookup_dynamic = NULL;
8867 mono_install_lookup_dynamic_token (MonoLookupDynamicToken func)
8869 lookup_dynamic = func;
8873 mono_lookup_dynamic_token (MonoImage *image, guint32 token, MonoGenericContext *context)
8875 MonoClass *handle_class;
8877 return lookup_dynamic (image, token, TRUE, &handle_class, context);
8881 mono_lookup_dynamic_token_class (MonoImage *image, guint32 token, gboolean valid_token, MonoClass **handle_class, MonoGenericContext *context)
8883 return lookup_dynamic (image, token, valid_token, handle_class, context);
8886 static MonoGetCachedClassInfo get_cached_class_info = NULL;
8889 mono_install_get_cached_class_info (MonoGetCachedClassInfo func)
8891 get_cached_class_info = func;
8895 mono_class_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
8897 if (!get_cached_class_info)
8900 return get_cached_class_info (klass, res);
8904 mono_install_get_class_from_name (MonoGetClassFromName func)
8906 get_class_from_name = func;
8910 * mono_class_get_image:
8912 * Use this method to get the `MonoImage*` where this class came from.
8914 * Returns: The image where this class is defined.
8917 mono_class_get_image (MonoClass *klass)
8919 return klass->image;
8923 * mono_class_get_element_class:
8924 * @klass: the MonoClass to act on
8926 * Use this function to get the element class of an array.
8928 * Returns: The element class of an array.
8931 mono_class_get_element_class (MonoClass *klass)
8933 return klass->element_class;
8937 * mono_class_is_valuetype:
8938 * @klass: the MonoClass to act on
8940 * Use this method to determine if the provided `MonoClass*` represents a value type,
8941 * or a reference type.
8943 * Returns: TRUE if the MonoClass represents a ValueType, FALSE if it represents a reference type.
8946 mono_class_is_valuetype (MonoClass *klass)
8948 return klass->valuetype;
8952 * mono_class_is_enum:
8953 * @klass: the MonoClass to act on
8955 * Use this function to determine if the provided `MonoClass*` represents an enumeration.
8957 * Returns: TRUE if the MonoClass represents an enumeration.
8960 mono_class_is_enum (MonoClass *klass)
8962 return klass->enumtype;
8966 * mono_class_enum_basetype:
8967 * @klass: the MonoClass to act on
8969 * Use this function to get the underlying type for an enumeration value.
8971 * Returns: The underlying type representation for an enumeration.
8974 mono_class_enum_basetype (MonoClass *klass)
8976 if (klass->element_class == klass)
8977 /* SRE or broken types */
8980 return &klass->element_class->byval_arg;
8984 * mono_class_get_parent
8985 * @klass: the MonoClass to act on
8987 * Returns: The parent class for this class.
8990 mono_class_get_parent (MonoClass *klass)
8992 return klass->parent;
8996 * mono_class_get_nesting_type:
8997 * @klass: the MonoClass to act on
8999 * Use this function to obtain the class that the provided `MonoClass*` is nested on.
9001 * If the return is NULL, this indicates that this class is not nested.
9003 * Returns: The container type where this type is nested or NULL if this type is not a nested type.
9006 mono_class_get_nesting_type (MonoClass *klass)
9008 return klass->nested_in;
9012 * mono_class_get_rank:
9013 * @klass: the MonoClass to act on
9015 * Returns: The rank for the array (the number of dimensions).
9018 mono_class_get_rank (MonoClass *klass)
9024 * mono_class_get_flags:
9025 * @klass: the MonoClass to act on
9027 * The type flags from the TypeDef table from the metadata.
9028 * see the TYPE_ATTRIBUTE_* definitions on tabledefs.h for the
9031 * Returns: The flags from the TypeDef table.
9034 mono_class_get_flags (MonoClass *klass)
9036 return klass->flags;
9040 * mono_class_get_name
9041 * @klass: the MonoClass to act on
9043 * Returns: The name of the class.
9046 mono_class_get_name (MonoClass *klass)
9052 * mono_class_get_namespace:
9053 * @klass: the MonoClass to act on
9055 * Returns: The namespace of the class.
9058 mono_class_get_namespace (MonoClass *klass)
9060 return klass->name_space;
9064 * mono_class_get_type:
9065 * @klass: the MonoClass to act on
9067 * This method returns the internal Type representation for the class.
9069 * Returns: The MonoType from the class.
9072 mono_class_get_type (MonoClass *klass)
9074 return &klass->byval_arg;
9078 * mono_class_get_type_token:
9079 * @klass: the MonoClass to act on
9081 * This method returns type token for the class.
9083 * Returns: The type token for the class.
9086 mono_class_get_type_token (MonoClass *klass)
9088 return klass->type_token;
9092 * mono_class_get_byref_type:
9093 * @klass: the MonoClass to act on
9098 mono_class_get_byref_type (MonoClass *klass)
9100 return &klass->this_arg;
9104 * mono_class_num_fields:
9105 * @klass: the MonoClass to act on
9107 * Returns: The number of static and instance fields in the class.
9110 mono_class_num_fields (MonoClass *klass)
9112 return klass->field.count;
9116 * mono_class_num_methods:
9117 * @klass: the MonoClass to act on
9119 * Returns: The number of methods in the class.
9122 mono_class_num_methods (MonoClass *klass)
9124 return klass->method.count;
9128 * mono_class_num_properties
9129 * @klass: the MonoClass to act on
9131 * Returns: The number of properties in the class.
9134 mono_class_num_properties (MonoClass *klass)
9136 mono_class_setup_properties (klass);
9138 return klass->ext->property.count;
9142 * mono_class_num_events:
9143 * @klass: the MonoClass to act on
9145 * Returns: The number of events in the class.
9148 mono_class_num_events (MonoClass *klass)
9150 mono_class_setup_events (klass);
9152 return klass->ext->event.count;
9156 * mono_class_get_fields:
9157 * @klass: the MonoClass to act on
9159 * This routine is an iterator routine for retrieving the fields in a class.
9161 * You must pass a gpointer that points to zero and is treated as an opaque handle to
9162 * iterate over all of the elements. When no more values are
9163 * available, the return value is NULL.
9165 * Returns: a @MonoClassField* on each iteration, or NULL when no more fields are available.
9168 mono_class_get_fields (MonoClass* klass, gpointer *iter)
9170 MonoClassField* field;
9174 mono_class_setup_fields_locking (klass);
9175 if (mono_class_has_failure (klass))
9177 /* start from the first */
9178 if (klass->field.count) {
9179 *iter = &klass->fields [0];
9180 return &klass->fields [0];
9186 field = (MonoClassField *)*iter;
9188 if (field < &klass->fields [klass->field.count]) {
9196 * mono_class_get_methods
9197 * @klass: the MonoClass to act on
9199 * This routine is an iterator routine for retrieving the fields in a class.
9201 * You must pass a gpointer that points to zero and is treated as an opaque handle to
9202 * iterate over all of the elements. When no more values are
9203 * available, the return value is NULL.
9205 * Returns: a MonoMethod on each iteration or NULL when no more methods are available.
9208 mono_class_get_methods (MonoClass* klass, gpointer *iter)
9210 MonoMethod** method;
9214 mono_class_setup_methods (klass);
9217 * We can't fail lookup of methods otherwise the runtime will burst in flames on all sort of places.
9218 * FIXME we should better report this error to the caller
9220 if (!klass->methods)
9222 /* start from the first */
9223 if (klass->method.count) {
9224 *iter = &klass->methods [0];
9225 return klass->methods [0];
9231 method = (MonoMethod **)*iter;
9233 if (method < &klass->methods [klass->method.count]) {
9241 * mono_class_get_virtual_methods:
9243 * Iterate over the virtual methods of KLASS.
9245 * LOCKING: Assumes the loader lock is held (because of the klass->methods check).
9248 mono_class_get_virtual_methods (MonoClass* klass, gpointer *iter)
9250 MonoMethod** method;
9253 if (klass->methods || !MONO_CLASS_HAS_STATIC_METADATA (klass)) {
9255 mono_class_setup_methods (klass);
9257 * We can't fail lookup of methods otherwise the runtime will burst in flames on all sort of places.
9258 * FIXME we should better report this error to the caller
9260 if (!klass->methods)
9262 /* start from the first */
9263 method = &klass->methods [0];
9265 method = (MonoMethod **)*iter;
9268 while (method < &klass->methods [klass->method.count]) {
9269 if (*method && ((*method)->flags & METHOD_ATTRIBUTE_VIRTUAL))
9273 if (method < &klass->methods [klass->method.count]) {
9280 /* Search directly in metadata to avoid calling setup_methods () */
9281 MonoMethod *res = NULL;
9287 start_index = GPOINTER_TO_UINT (*iter);
9290 for (i = start_index; i < klass->method.count; ++i) {
9293 /* klass->method.first points into the methodptr table */
9294 flags = mono_metadata_decode_table_row_col (klass->image, MONO_TABLE_METHOD, klass->method.first + i, MONO_METHOD_FLAGS);
9296 if (flags & METHOD_ATTRIBUTE_VIRTUAL)
9300 if (i < klass->method.count) {
9302 res = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | (klass->method.first + i + 1), klass, NULL, &error);
9303 mono_error_cleanup (&error); /* FIXME don't swallow the error */
9305 /* Add 1 here so the if (*iter) check fails */
9306 *iter = GUINT_TO_POINTER (i + 1);
9315 * mono_class_get_properties:
9316 * @klass: the MonoClass to act on
9318 * This routine is an iterator routine for retrieving the properties in a class.
9320 * You must pass a gpointer that points to zero and is treated as an opaque handle to
9321 * iterate over all of the elements. When no more values are
9322 * available, the return value is NULL.
9324 * Returns: a @MonoProperty* on each invocation, or NULL when no more are available.
9327 mono_class_get_properties (MonoClass* klass, gpointer *iter)
9329 MonoProperty* property;
9333 mono_class_setup_properties (klass);
9334 /* start from the first */
9335 if (klass->ext->property.count) {
9336 *iter = &klass->ext->properties [0];
9337 return (MonoProperty *)*iter;
9343 property = (MonoProperty *)*iter;
9345 if (property < &klass->ext->properties [klass->ext->property.count]) {
9347 return (MonoProperty *)*iter;
9353 * mono_class_get_events:
9354 * @klass: the MonoClass to act on
9356 * This routine is an iterator routine for retrieving the properties in a class.
9358 * You must pass a gpointer that points to zero and is treated as an opaque handle to
9359 * iterate over all of the elements. When no more values are
9360 * available, the return value is NULL.
9362 * Returns: a @MonoEvent* on each invocation, or NULL when no more are available.
9365 mono_class_get_events (MonoClass* klass, gpointer *iter)
9371 mono_class_setup_events (klass);
9372 /* start from the first */
9373 if (klass->ext->event.count) {
9374 *iter = &klass->ext->events [0];
9375 return (MonoEvent *)*iter;
9381 event = (MonoEvent *)*iter;
9383 if (event < &klass->ext->events [klass->ext->event.count]) {
9385 return (MonoEvent *)*iter;
9391 * mono_class_get_interfaces
9392 * @klass: the MonoClass to act on
9394 * This routine is an iterator routine for retrieving the interfaces implemented by this class.
9396 * You must pass a gpointer that points to zero and is treated as an opaque handle to
9397 * iterate over all of the elements. When no more values are
9398 * available, the return value is NULL.
9400 * Returns: a @Monoclass* on each invocation, or NULL when no more are available.
9403 mono_class_get_interfaces (MonoClass* klass, gpointer *iter)
9411 mono_class_init (klass);
9412 if (!klass->interfaces_inited) {
9413 mono_class_setup_interfaces (klass, &error);
9414 if (!mono_error_ok (&error)) {
9415 mono_error_cleanup (&error);
9419 /* start from the first */
9420 if (klass->interface_count) {
9421 *iter = &klass->interfaces [0];
9422 return klass->interfaces [0];
9428 iface = (MonoClass **)*iter;
9430 if (iface < &klass->interfaces [klass->interface_count]) {
9438 setup_nested_types (MonoClass *klass)
9441 GList *classes, *nested_classes, *l;
9444 if (klass->nested_classes_inited)
9447 if (!klass->type_token)
9448 klass->nested_classes_inited = TRUE;
9450 i = mono_metadata_nesting_typedef (klass->image, klass->type_token, 1);
9454 guint32 cols [MONO_NESTED_CLASS_SIZE];
9455 mono_metadata_decode_row (&klass->image->tables [MONO_TABLE_NESTEDCLASS], i - 1, cols, MONO_NESTED_CLASS_SIZE);
9456 nclass = mono_class_create_from_typedef (klass->image, MONO_TOKEN_TYPE_DEF | cols [MONO_NESTED_CLASS_NESTED], &error);
9457 if (!mono_error_ok (&error)) {
9458 /*FIXME don't swallow the error message*/
9459 mono_error_cleanup (&error);
9461 i = mono_metadata_nesting_typedef (klass->image, klass->type_token, i + 1);
9465 classes = g_list_prepend (classes, nclass);
9467 i = mono_metadata_nesting_typedef (klass->image, klass->type_token, i + 1);
9470 mono_class_alloc_ext (klass);
9472 nested_classes = NULL;
9473 for (l = classes; l; l = l->next)
9474 nested_classes = g_list_prepend_image (klass->image, nested_classes, l->data);
9475 g_list_free (classes);
9477 mono_image_lock (klass->image);
9479 mono_memory_barrier ();
9480 if (!klass->nested_classes_inited) {
9481 klass->ext->nested_classes = nested_classes;
9482 mono_memory_barrier ();
9483 klass->nested_classes_inited = TRUE;
9486 mono_image_unlock (klass->image);
9490 * mono_class_get_nested_types
9491 * @klass: the MonoClass to act on
9493 * This routine is an iterator routine for retrieving the nested types of a class.
9494 * This works only if @klass is non-generic, or a generic type definition.
9496 * You must pass a gpointer that points to zero and is treated as an opaque handle to
9497 * iterate over all of the elements. When no more values are
9498 * available, the return value is NULL.
9500 * Returns: a @Monoclass* on each invocation, or NULL when no more are available.
9503 mono_class_get_nested_types (MonoClass* klass, gpointer *iter)
9509 if (!klass->nested_classes_inited)
9510 setup_nested_types (klass);
9513 /* start from the first */
9514 if (klass->ext && klass->ext->nested_classes) {
9515 *iter = klass->ext->nested_classes;
9516 return (MonoClass *)klass->ext->nested_classes->data;
9518 /* no nested types */
9522 item = (GList *)*iter;
9526 return (MonoClass *)item->data;
9533 * mono_class_is_delegate
9534 * @klass: the MonoClass to act on
9536 * Returns: TRUE if the MonoClass represents a System.Delegate.
9539 mono_class_is_delegate (MonoClass *klass)
9541 return klass->delegate;
9545 * mono_class_implements_interface
9546 * @klass: The MonoClass to act on
9547 * @interface: The interface to check if @klass implements.
9549 * Returns: TRUE if @klass implements @interface.
9552 mono_class_implements_interface (MonoClass* klass, MonoClass* iface)
9554 return mono_class_is_assignable_from (iface, klass);
9558 * mono_field_get_name:
9559 * @field: the MonoClassField to act on
9561 * Returns: The name of the field.
9564 mono_field_get_name (MonoClassField *field)
9570 * mono_field_get_type:
9571 * @field: the MonoClassField to act on
9573 * Returns: MonoType of the field.
9576 mono_field_get_type (MonoClassField *field)
9579 MonoType *type = mono_field_get_type_checked (field, &error);
9580 if (!mono_error_ok (&error)) {
9581 mono_trace_warning (MONO_TRACE_TYPE, "Could not load field's type due to %s", mono_error_get_message (&error));
9582 mono_error_cleanup (&error);
9589 * mono_field_get_type_checked:
9590 * @field: the MonoClassField to act on
9591 * @error: used to return any erro found while retrieving @field type
9593 * Returns: MonoType of the field.
9596 mono_field_get_type_checked (MonoClassField *field, MonoError *error)
9598 mono_error_init (error);
9600 mono_field_resolve_type (field, error);
9605 * mono_field_get_parent:
9606 * @field: the MonoClassField to act on
9608 * Returns: MonoClass where the field was defined.
9611 mono_field_get_parent (MonoClassField *field)
9613 return field->parent;
9617 * mono_field_get_flags;
9618 * @field: the MonoClassField to act on
9620 * The metadata flags for a field are encoded using the
9621 * FIELD_ATTRIBUTE_* constants. See the tabledefs.h file for details.
9623 * Returns: The flags for the field.
9626 mono_field_get_flags (MonoClassField *field)
9629 return mono_field_resolve_flags (field);
9630 return field->type->attrs;
9634 * mono_field_get_offset:
9635 * @field: the MonoClassField to act on
9637 * Returns: The field offset.
9640 mono_field_get_offset (MonoClassField *field)
9642 return field->offset;
9646 mono_field_get_rva (MonoClassField *field)
9650 MonoClass *klass = field->parent;
9651 MonoFieldDefaultValue *field_def_values;
9653 g_assert (field->type->attrs & FIELD_ATTRIBUTE_HAS_FIELD_RVA);
9655 if (!klass->ext || !klass->ext->field_def_values) {
9656 mono_class_alloc_ext (klass);
9658 field_def_values = (MonoFieldDefaultValue *)mono_class_alloc0 (klass, sizeof (MonoFieldDefaultValue) * klass->field.count);
9660 mono_image_lock (klass->image);
9661 if (!klass->ext->field_def_values)
9662 klass->ext->field_def_values = field_def_values;
9663 mono_image_unlock (klass->image);
9666 field_index = mono_field_get_index (field);
9668 if (!klass->ext->field_def_values [field_index].data && !image_is_dynamic (klass->image)) {
9669 mono_metadata_field_info (field->parent->image, klass->field.first + field_index, NULL, &rva, NULL);
9671 g_warning ("field %s in %s should have RVA data, but hasn't", mono_field_get_name (field), field->parent->name);
9672 klass->ext->field_def_values [field_index].data = mono_image_rva_map (field->parent->image, rva);
9675 return klass->ext->field_def_values [field_index].data;
9679 * mono_field_get_data:
9680 * @field: the MonoClassField to act on
9682 * Returns: A pointer to the metadata constant value or to the field
9683 * data if it has an RVA flag.
9686 mono_field_get_data (MonoClassField *field)
9688 if (field->type->attrs & FIELD_ATTRIBUTE_HAS_DEFAULT) {
9689 MonoTypeEnum def_type;
9691 return mono_class_get_field_default_value (field, &def_type);
9692 } else if (field->type->attrs & FIELD_ATTRIBUTE_HAS_FIELD_RVA) {
9693 return mono_field_get_rva (field);
9700 * mono_property_get_name:
9701 * @prop: the MonoProperty to act on
9703 * Returns: The name of the property
9706 mono_property_get_name (MonoProperty *prop)
9712 * mono_property_get_set_method
9713 * @prop: the MonoProperty to act on.
9715 * Returns: The setter method of the property (A MonoMethod)
9718 mono_property_get_set_method (MonoProperty *prop)
9724 * mono_property_get_get_method
9725 * @prop: the MonoProperty to act on.
9727 * Returns: The setter method of the property (A MonoMethod)
9730 mono_property_get_get_method (MonoProperty *prop)
9736 * mono_property_get_parent:
9737 * @prop: the MonoProperty to act on.
9739 * Returns: The MonoClass where the property was defined.
9742 mono_property_get_parent (MonoProperty *prop)
9744 return prop->parent;
9748 * mono_property_get_flags:
9749 * @prop: the MonoProperty to act on.
9751 * The metadata flags for a property are encoded using the
9752 * PROPERTY_ATTRIBUTE_* constants. See the tabledefs.h file for details.
9754 * Returns: The flags for the property.
9757 mono_property_get_flags (MonoProperty *prop)
9763 * mono_event_get_name:
9764 * @event: the MonoEvent to act on
9766 * Returns: The name of the event.
9769 mono_event_get_name (MonoEvent *event)
9775 * mono_event_get_add_method:
9776 * @event: The MonoEvent to act on.
9778 * Returns: The @add' method for the event (a MonoMethod).
9781 mono_event_get_add_method (MonoEvent *event)
9787 * mono_event_get_remove_method:
9788 * @event: The MonoEvent to act on.
9790 * Returns: The @remove method for the event (a MonoMethod).
9793 mono_event_get_remove_method (MonoEvent *event)
9795 return event->remove;
9799 * mono_event_get_raise_method:
9800 * @event: The MonoEvent to act on.
9802 * Returns: The @raise method for the event (a MonoMethod).
9805 mono_event_get_raise_method (MonoEvent *event)
9807 return event->raise;
9811 * mono_event_get_parent:
9812 * @event: the MonoEvent to act on.
9814 * Returns: The MonoClass where the event is defined.
9817 mono_event_get_parent (MonoEvent *event)
9819 return event->parent;
9823 * mono_event_get_flags
9824 * @event: the MonoEvent to act on.
9826 * The metadata flags for an event are encoded using the
9827 * EVENT_* constants. See the tabledefs.h file for details.
9829 * Returns: The flags for the event.
9832 mono_event_get_flags (MonoEvent *event)
9834 return event->attrs;
9838 * mono_class_get_method_from_name:
9839 * @klass: where to look for the method
9840 * @name: name of the method
9841 * @param_count: number of parameters. -1 for any number.
9843 * Obtains a MonoMethod with a given name and number of parameters.
9844 * It only works if there are no multiple signatures for any given method name.
9847 mono_class_get_method_from_name (MonoClass *klass, const char *name, int param_count)
9849 return mono_class_get_method_from_name_flags (klass, name, param_count, 0);
9853 find_method_in_metadata (MonoClass *klass, const char *name, int param_count, int flags)
9855 MonoMethod *res = NULL;
9858 /* Search directly in the metadata to avoid calling setup_methods () */
9859 for (i = 0; i < klass->method.count; ++i) {
9861 guint32 cols [MONO_METHOD_SIZE];
9863 MonoMethodSignature *sig;
9865 /* klass->method.first points into the methodptr table */
9866 mono_metadata_decode_table_row (klass->image, MONO_TABLE_METHOD, klass->method.first + i, cols, MONO_METHOD_SIZE);
9868 if (!strcmp (mono_metadata_string_heap (klass->image, cols [MONO_METHOD_NAME]), name)) {
9869 method = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | (klass->method.first + i + 1), klass, NULL, &error);
9871 mono_error_cleanup (&error); /* FIXME don't swallow the error */
9874 if (param_count == -1) {
9878 sig = mono_method_signature_checked (method, &error);
9880 mono_error_cleanup (&error); /* FIXME don't swallow the error */
9883 if (sig->param_count == param_count) {
9894 * mono_class_get_method_from_name_flags:
9895 * @klass: where to look for the method
9896 * @name_space: name of the method
9897 * @param_count: number of parameters. -1 for any number.
9898 * @flags: flags which must be set in the method
9900 * Obtains a MonoMethod with a given name and number of parameters.
9901 * It only works if there are no multiple signatures for any given method name.
9904 mono_class_get_method_from_name_flags (MonoClass *klass, const char *name, int param_count, int flags)
9906 MonoMethod *res = NULL;
9909 mono_class_init (klass);
9911 if (klass->generic_class && !klass->methods) {
9912 res = mono_class_get_method_from_name_flags (klass->generic_class->container_class, name, param_count, flags);
9915 res = mono_class_inflate_generic_method_full_checked (res, klass, mono_class_get_context (klass), &error);
9916 if (!mono_error_ok (&error))
9917 mono_error_cleanup (&error); /*FIXME don't swallow the error */
9922 if (klass->methods || !MONO_CLASS_HAS_STATIC_METADATA (klass)) {
9923 mono_class_setup_methods (klass);
9925 We can't fail lookup of methods otherwise the runtime will burst in flames on all sort of places.
9926 See mono/tests/array_load_exception.il
9927 FIXME we should better report this error to the caller
9929 if (!klass->methods)
9931 for (i = 0; i < klass->method.count; ++i) {
9932 MonoMethod *method = klass->methods [i];
9934 if (method->name[0] == name [0] &&
9935 !strcmp (name, method->name) &&
9936 (param_count == -1 || mono_method_signature (method)->param_count == param_count) &&
9937 ((method->flags & flags) == flags)) {
9944 res = find_method_in_metadata (klass, name, param_count, flags);
9951 * mono_class_set_failure:
9952 * @klass: class in which the failure was detected
9953 * @ex_type: the kind of exception/error to be thrown (later)
9954 * @ex_data: exception data (specific to each type of exception/error)
9956 * Keep a detected failure informations in the class for later processing.
9957 * Note that only the first failure is kept.
9959 * LOCKING: Acquires the loader lock.
9962 mono_class_set_failure (MonoClass *klass, guint32 ex_type, void *ex_data)
9964 if (mono_class_has_failure (klass))
9967 mono_loader_lock ();
9968 klass->exception_type = ex_type;
9970 mono_image_property_insert (klass->image, klass, MONO_CLASS_PROP_EXCEPTION_DATA, ex_data);
9971 mono_loader_unlock ();
9977 * mono_class_get_exception_data:
9979 * Return the exception_data property of KLASS.
9981 * LOCKING: Acquires the loader lock.
9984 mono_class_get_exception_data (MonoClass *klass)
9986 return mono_image_property_lookup (klass->image, klass, MONO_CLASS_PROP_EXCEPTION_DATA);
9990 * mono_classes_init:
9992 * Initialize the resources used by this module.
9995 mono_classes_init (void)
9997 mono_os_mutex_init (&classes_mutex);
9999 mono_counters_register ("Inflated methods size",
10000 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_methods_size);
10001 mono_counters_register ("Inflated classes",
10002 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_classes);
10003 mono_counters_register ("Inflated classes size",
10004 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_classes_size);
10005 mono_counters_register ("MonoClass size",
10006 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &classes_size);
10007 mono_counters_register ("MonoClassExt size",
10008 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &class_ext_size);
10012 * mono_classes_cleanup:
10014 * Free the resources used by this module.
10017 mono_classes_cleanup (void)
10019 if (global_interface_bitset)
10020 mono_bitset_free (global_interface_bitset);
10021 global_interface_bitset = NULL;
10022 mono_os_mutex_destroy (&classes_mutex);
10026 * mono_class_get_exception_for_failure:
10027 * @klass: class in which the failure was detected
10029 * Return a constructed MonoException than the caller can then throw
10030 * using mono_raise_exception - or NULL if no failure is present (or
10031 * doesn't result in an exception).
10034 mono_class_get_exception_for_failure (MonoClass *klass)
10036 gpointer exception_data = mono_class_get_exception_data (klass);
10038 switch (mono_class_get_failure(klass)) {
10039 case MONO_EXCEPTION_TYPE_LOAD: {
10042 char *str = mono_type_get_full_name (klass);
10043 char *astr = klass->image->assembly? mono_stringify_assembly_name (&klass->image->assembly->aname): NULL;
10044 name = mono_string_new (mono_domain_get (), str);
10046 ex = mono_get_exception_type_load (name, astr);
10050 case MONO_EXCEPTION_MISSING_METHOD: {
10051 char *class_name = (char *)exception_data;
10052 char *assembly_name = class_name + strlen (class_name) + 1;
10054 return mono_get_exception_missing_method (class_name, assembly_name);
10056 case MONO_EXCEPTION_MISSING_FIELD: {
10057 char *class_name = (char *)exception_data;
10058 char *member_name = class_name + strlen (class_name) + 1;
10060 return mono_get_exception_missing_field (class_name, member_name);
10062 case MONO_EXCEPTION_FILE_NOT_FOUND: {
10063 char *msg_format = (char *)exception_data;
10064 char *assembly_name = msg_format + strlen (msg_format) + 1;
10065 char *msg = g_strdup_printf (msg_format, assembly_name);
10068 ex = mono_get_exception_file_not_found2 (msg, mono_string_new (mono_domain_get (), assembly_name));
10074 case MONO_EXCEPTION_BAD_IMAGE: {
10075 return mono_get_exception_bad_image_format ((const char *)exception_data);
10078 MonoLoaderError *error;
10081 error = mono_loader_get_last_error ();
10082 if (error != NULL){
10083 ex = mono_loader_error_prepare_exception (error);
10087 /* TODO - handle other class related failures */
10094 is_nesting_type (MonoClass *outer_klass, MonoClass *inner_klass)
10096 outer_klass = mono_class_get_generic_type_definition (outer_klass);
10097 inner_klass = mono_class_get_generic_type_definition (inner_klass);
10099 if (outer_klass == inner_klass)
10101 inner_klass = inner_klass->nested_in;
10102 } while (inner_klass);
10107 mono_class_get_generic_type_definition (MonoClass *klass)
10109 return klass->generic_class ? klass->generic_class->container_class : klass;
10113 * Check if @klass is a subtype of @parent ignoring generic instantiations.
10115 * Generic instantiations are ignored for all super types of @klass.
10117 * Visibility checks ignoring generic instantiations.
10120 mono_class_has_parent_and_ignore_generics (MonoClass *klass, MonoClass *parent)
10123 klass = mono_class_get_generic_type_definition (klass);
10124 parent = mono_class_get_generic_type_definition (parent);
10125 mono_class_setup_supertypes (klass);
10127 for (i = 0; i < klass->idepth; ++i) {
10128 if (parent == mono_class_get_generic_type_definition (klass->supertypes [i]))
10134 * Subtype can only access parent members with family protection if the site object
10135 * is subclass of Subtype. For example:
10136 * class A { protected int x; }
10138 * void valid_access () {
10142 * void invalid_access () {
10149 is_valid_family_access (MonoClass *access_klass, MonoClass *member_klass, MonoClass *context_klass)
10151 if (!mono_class_has_parent_and_ignore_generics (access_klass, member_klass))
10154 if (context_klass == NULL)
10156 /*if access_klass is not member_klass context_klass must be type compat*/
10157 if (access_klass != member_klass && !mono_class_has_parent_and_ignore_generics (context_klass, access_klass))
10163 can_access_internals (MonoAssembly *accessing, MonoAssembly* accessed)
10166 if (accessing == accessed)
10168 if (!accessed || !accessing)
10171 /* extra safety under CoreCLR - the runtime does not verify the strongname signatures
10172 * anywhere so untrusted friends are not safe to access platform's code internals */
10173 if (mono_security_core_clr_enabled ()) {
10174 if (!mono_security_core_clr_can_access_internals (accessing->image, accessed->image))
10178 mono_assembly_load_friends (accessed);
10179 for (tmp = accessed->friend_assembly_names; tmp; tmp = tmp->next) {
10180 MonoAssemblyName *friend_ = (MonoAssemblyName *)tmp->data;
10181 /* Be conservative with checks */
10182 if (!friend_->name)
10184 if (strcmp (accessing->aname.name, friend_->name))
10186 if (friend_->public_key_token [0]) {
10187 if (!accessing->aname.public_key_token [0])
10189 if (!mono_public_tokens_are_equal (friend_->public_key_token, accessing->aname.public_key_token))
10198 * If klass is a generic type or if it is derived from a generic type, return the
10199 * MonoClass of the generic definition
10200 * Returns NULL if not found
10203 get_generic_definition_class (MonoClass *klass)
10206 if (klass->generic_class && klass->generic_class->container_class)
10207 return klass->generic_class->container_class;
10208 klass = klass->parent;
10214 can_access_instantiation (MonoClass *access_klass, MonoGenericInst *ginst)
10217 for (i = 0; i < ginst->type_argc; ++i) {
10218 MonoType *type = ginst->type_argv[i];
10219 switch (type->type) {
10220 case MONO_TYPE_SZARRAY:
10221 if (!can_access_type (access_klass, type->data.klass))
10224 case MONO_TYPE_ARRAY:
10225 if (!can_access_type (access_klass, type->data.array->eklass))
10228 case MONO_TYPE_PTR:
10229 if (!can_access_type (access_klass, mono_class_from_mono_type (type->data.type)))
10232 case MONO_TYPE_CLASS:
10233 case MONO_TYPE_VALUETYPE:
10234 case MONO_TYPE_GENERICINST:
10235 if (!can_access_type (access_klass, mono_class_from_mono_type (type)))
10245 can_access_type (MonoClass *access_klass, MonoClass *member_klass)
10249 if (access_klass->image->assembly && access_klass->image->assembly->corlib_internal)
10252 if (access_klass->element_class && !access_klass->enumtype)
10253 access_klass = access_klass->element_class;
10255 if (member_klass->element_class && !member_klass->enumtype)
10256 member_klass = member_klass->element_class;
10258 access_level = member_klass->flags & TYPE_ATTRIBUTE_VISIBILITY_MASK;
10260 if (member_klass->byval_arg.type == MONO_TYPE_VAR || member_klass->byval_arg.type == MONO_TYPE_MVAR)
10263 if (member_klass->generic_class && !can_access_instantiation (access_klass, member_klass->generic_class->context.class_inst))
10266 if (is_nesting_type (access_klass, member_klass) || (access_klass->nested_in && is_nesting_type (access_klass->nested_in, member_klass)))
10269 if (member_klass->nested_in && !can_access_type (access_klass, member_klass->nested_in))
10272 /*Non nested type with nested visibility. We just fail it.*/
10273 if (access_level >= TYPE_ATTRIBUTE_NESTED_PRIVATE && access_level <= TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM && member_klass->nested_in == NULL)
10276 switch (access_level) {
10277 case TYPE_ATTRIBUTE_NOT_PUBLIC:
10278 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
10280 case TYPE_ATTRIBUTE_PUBLIC:
10283 case TYPE_ATTRIBUTE_NESTED_PUBLIC:
10286 case TYPE_ATTRIBUTE_NESTED_PRIVATE:
10287 return is_nesting_type (member_klass, access_klass);
10289 case TYPE_ATTRIBUTE_NESTED_FAMILY:
10290 return mono_class_has_parent_and_ignore_generics (access_klass, member_klass->nested_in);
10292 case TYPE_ATTRIBUTE_NESTED_ASSEMBLY:
10293 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
10295 case TYPE_ATTRIBUTE_NESTED_FAM_AND_ASSEM:
10296 return can_access_internals (access_klass->image->assembly, member_klass->nested_in->image->assembly) &&
10297 mono_class_has_parent_and_ignore_generics (access_klass, member_klass->nested_in);
10299 case TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM:
10300 return can_access_internals (access_klass->image->assembly, member_klass->nested_in->image->assembly) ||
10301 mono_class_has_parent_and_ignore_generics (access_klass, member_klass->nested_in);
10306 /* FIXME: check visibility of type, too */
10308 can_access_member (MonoClass *access_klass, MonoClass *member_klass, MonoClass* context_klass, int access_level)
10310 MonoClass *member_generic_def;
10311 if (access_klass->image->assembly && access_klass->image->assembly->corlib_internal)
10314 if (((access_klass->generic_class && access_klass->generic_class->container_class) ||
10315 access_klass->generic_container) &&
10316 (member_generic_def = get_generic_definition_class (member_klass))) {
10317 MonoClass *access_container;
10319 if (access_klass->generic_container)
10320 access_container = access_klass;
10322 access_container = access_klass->generic_class->container_class;
10324 if (can_access_member (access_container, member_generic_def, context_klass, access_level))
10328 /* Partition I 8.5.3.2 */
10329 /* the access level values are the same for fields and methods */
10330 switch (access_level) {
10331 case FIELD_ATTRIBUTE_COMPILER_CONTROLLED:
10332 /* same compilation unit */
10333 return access_klass->image == member_klass->image;
10334 case FIELD_ATTRIBUTE_PRIVATE:
10335 return access_klass == member_klass;
10336 case FIELD_ATTRIBUTE_FAM_AND_ASSEM:
10337 if (is_valid_family_access (access_klass, member_klass, context_klass) &&
10338 can_access_internals (access_klass->image->assembly, member_klass->image->assembly))
10341 case FIELD_ATTRIBUTE_ASSEMBLY:
10342 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
10343 case FIELD_ATTRIBUTE_FAMILY:
10344 if (is_valid_family_access (access_klass, member_klass, context_klass))
10347 case FIELD_ATTRIBUTE_FAM_OR_ASSEM:
10348 if (is_valid_family_access (access_klass, member_klass, context_klass))
10350 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
10351 case FIELD_ATTRIBUTE_PUBLIC:
10358 * mono_method_can_access_field:
10359 * @method: Method that will attempt to access the field
10360 * @field: the field to access
10362 * Used to determine if a method is allowed to access the specified field.
10364 * Returns: TRUE if the given @method is allowed to access the @field while following
10365 * the accessibility rules of the CLI.
10368 mono_method_can_access_field (MonoMethod *method, MonoClassField *field)
10370 /* FIXME: check all overlapping fields */
10371 int can = can_access_member (method->klass, field->parent, NULL, mono_field_get_type (field)->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
10373 MonoClass *nested = method->klass->nested_in;
10375 can = can_access_member (nested, field->parent, NULL, mono_field_get_type (field)->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
10378 nested = nested->nested_in;
10385 * mono_method_can_access_method:
10386 * @method: Method that will attempt to access the other method
10387 * @called: the method that we want to probe for accessibility.
10389 * Used to determine if the @method is allowed to access the specified @called method.
10391 * Returns: TRUE if the given @method is allowed to invoke the @called while following
10392 * the accessibility rules of the CLI.
10395 mono_method_can_access_method (MonoMethod *method, MonoMethod *called)
10397 int can = can_access_member (method->klass, called->klass, NULL, called->flags & METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK);
10399 MonoClass *nested = method->klass->nested_in;
10401 can = can_access_member (nested, called->klass, NULL, called->flags & METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK);
10404 nested = nested->nested_in;
10409 * with generics calls to explicit interface implementations can be expressed
10410 * directly: the method is private, but we must allow it. This may be opening
10411 * a hole or the generics code should handle this differently.
10412 * Maybe just ensure the interface type is public.
10414 if ((called->flags & METHOD_ATTRIBUTE_VIRTUAL) && (called->flags & METHOD_ATTRIBUTE_FINAL))
10420 * mono_method_can_access_method_full:
10421 * @method: The caller method
10422 * @called: The called method
10423 * @context_klass: The static type on stack of the owner @called object used
10425 * This function must be used with instance calls, as they have more strict family accessibility.
10426 * It can be used with static methods, but context_klass should be NULL.
10428 * Returns: TRUE if caller have proper visibility and acessibility to @called
10431 mono_method_can_access_method_full (MonoMethod *method, MonoMethod *called, MonoClass *context_klass)
10433 MonoClass *access_class = method->klass;
10434 MonoClass *member_class = called->klass;
10435 int can = can_access_member (access_class, member_class, context_klass, called->flags & METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK);
10437 MonoClass *nested = access_class->nested_in;
10439 can = can_access_member (nested, member_class, context_klass, called->flags & METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK);
10442 nested = nested->nested_in;
10449 can = can_access_type (access_class, member_class);
10451 MonoClass *nested = access_class->nested_in;
10453 can = can_access_type (nested, member_class);
10456 nested = nested->nested_in;
10463 if (called->is_inflated) {
10464 MonoMethodInflated * infl = (MonoMethodInflated*)called;
10465 if (infl->context.method_inst && !can_access_instantiation (access_class, infl->context.method_inst))
10474 * mono_method_can_access_field_full:
10475 * @method: The caller method
10476 * @field: The accessed field
10477 * @context_klass: The static type on stack of the owner @field object used
10479 * This function must be used with instance fields, as they have more strict family accessibility.
10480 * It can be used with static fields, but context_klass should be NULL.
10482 * Returns: TRUE if caller have proper visibility and acessibility to @field
10485 mono_method_can_access_field_full (MonoMethod *method, MonoClassField *field, MonoClass *context_klass)
10487 MonoClass *access_class = method->klass;
10488 MonoClass *member_class = field->parent;
10489 /* FIXME: check all overlapping fields */
10490 int can = can_access_member (access_class, member_class, context_klass, field->type->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
10492 MonoClass *nested = access_class->nested_in;
10494 can = can_access_member (nested, member_class, context_klass, field->type->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
10497 nested = nested->nested_in;
10504 can = can_access_type (access_class, member_class);
10506 MonoClass *nested = access_class->nested_in;
10508 can = can_access_type (nested, member_class);
10511 nested = nested->nested_in;
10521 * mono_class_can_access_class:
10522 * @source_class: The source class
10523 * @target_class: The accessed class
10525 * This function returns is @target_class is visible to @source_class
10527 * Returns: TRUE if source have proper visibility and acessibility to target
10530 mono_class_can_access_class (MonoClass *source_class, MonoClass *target_class)
10532 return can_access_type (source_class, target_class);
10536 * mono_type_is_valid_enum_basetype:
10537 * @type: The MonoType to check
10539 * Returns: TRUE if the type can be used as the basetype of an enum
10541 gboolean mono_type_is_valid_enum_basetype (MonoType * type) {
10542 switch (type->type) {
10545 case MONO_TYPE_BOOLEAN:
10548 case MONO_TYPE_CHAR:
10562 * mono_class_is_valid_enum:
10563 * @klass: An enum class to be validated
10565 * This method verify the required properties an enum should have.
10567 * Returns: TRUE if the informed enum class is valid
10569 * FIXME: TypeBuilder enums are allowed to implement interfaces, but since they cannot have methods, only empty interfaces are possible
10570 * FIXME: enum types are not allowed to have a cctor, but mono_reflection_create_runtime_class sets has_cctor to 1 for all types
10571 * FIXME: TypeBuilder enums can have any kind of static fields, but the spec is very explicit about that (P II 14.3)
10573 gboolean mono_class_is_valid_enum (MonoClass *klass) {
10574 MonoClassField * field;
10575 gpointer iter = NULL;
10576 gboolean found_base_field = FALSE;
10578 g_assert (klass->enumtype);
10579 /* we cannot test against mono_defaults.enum_class, or mcs won't be able to compile the System namespace*/
10580 if (!klass->parent || strcmp (klass->parent->name, "Enum") || strcmp (klass->parent->name_space, "System") ) {
10584 if ((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) != TYPE_ATTRIBUTE_AUTO_LAYOUT)
10587 while ((field = mono_class_get_fields (klass, &iter))) {
10588 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
10589 if (found_base_field)
10591 found_base_field = TRUE;
10592 if (!mono_type_is_valid_enum_basetype (field->type))
10597 if (!found_base_field)
10600 if (klass->method.count > 0)
10607 mono_generic_class_is_generic_type_definition (MonoGenericClass *gklass)
10609 return gklass->context.class_inst == gklass->container_class->generic_container->context.class_inst;
10613 * mono_class_setup_interface_id:
10615 * Initializes MonoClass::interface_id if required.
10617 * LOCKING: Acquires the loader lock.
10620 mono_class_setup_interface_id (MonoClass *klass)
10622 mono_loader_lock ();
10623 if (MONO_CLASS_IS_INTERFACE (klass) && !klass->interface_id)
10624 klass->interface_id = mono_get_unique_iid (klass);
10625 mono_loader_unlock ();
10629 * mono_class_alloc_ext:
10631 * Allocate klass->ext if not already done.
10634 mono_class_alloc_ext (MonoClass *klass)
10641 ext = (MonoClassExt *)mono_class_alloc0 (klass, sizeof (MonoClassExt));
10642 mono_image_lock (klass->image);
10643 mono_memory_barrier ();
10646 class_ext_size += sizeof (MonoClassExt);
10647 mono_image_unlock (klass->image);
10651 * mono_class_setup_interfaces:
10653 * Initialize klass->interfaces/interfaces_count.
10654 * LOCKING: Acquires the loader lock.
10655 * This function can fail the type.
10658 mono_class_setup_interfaces (MonoClass *klass, MonoError *error)
10660 int i, interface_count;
10661 MonoClass **interfaces;
10663 mono_error_init (error);
10665 if (klass->interfaces_inited)
10668 if (klass->rank == 1 && klass->byval_arg.type != MONO_TYPE_ARRAY) {
10669 MonoType *args [1];
10671 /* generic IList, ICollection, IEnumerable */
10672 interface_count = mono_defaults.generic_ireadonlylist_class ? 2 : 1;
10673 interfaces = (MonoClass **)mono_image_alloc0 (klass->image, sizeof (MonoClass*) * interface_count);
10675 args [0] = &klass->element_class->byval_arg;
10676 interfaces [0] = mono_class_bind_generic_parameters (
10677 mono_defaults.generic_ilist_class, 1, args, FALSE);
10678 if (interface_count > 1)
10679 interfaces [1] = mono_class_bind_generic_parameters (
10680 mono_defaults.generic_ireadonlylist_class, 1, args, FALSE);
10681 } else if (klass->generic_class) {
10682 MonoClass *gklass = klass->generic_class->container_class;
10684 mono_class_setup_interfaces (gklass, error);
10685 if (!mono_error_ok (error)) {
10686 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Could not setup the interfaces"));
10690 interface_count = gklass->interface_count;
10691 interfaces = mono_class_new0 (klass, MonoClass *, interface_count);
10692 for (i = 0; i < interface_count; i++) {
10693 interfaces [i] = mono_class_inflate_generic_class_checked (gklass->interfaces [i], mono_generic_class_get_context (klass->generic_class), error);
10694 if (!mono_error_ok (error)) {
10695 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup ("Could not setup the interfaces"));
10700 interface_count = 0;
10704 mono_image_lock (klass->image);
10706 if (!klass->interfaces_inited) {
10707 klass->interface_count = interface_count;
10708 klass->interfaces = interfaces;
10710 mono_memory_barrier ();
10712 klass->interfaces_inited = TRUE;
10715 mono_image_unlock (klass->image);
10719 mono_field_resolve_type (MonoClassField *field, MonoError *error)
10721 MonoClass *klass = field->parent;
10722 MonoImage *image = klass->image;
10723 MonoClass *gtd = klass->generic_class ? mono_class_get_generic_type_definition (klass) : NULL;
10724 int field_idx = field - klass->fields;
10726 mono_error_init (error);
10729 MonoClassField *gfield = >d->fields [field_idx];
10730 MonoType *gtype = mono_field_get_type_checked (gfield, error);
10731 if (!mono_error_ok (error)) {
10732 char *err_msg = g_strdup_printf ("Could not load field %d type due to: %s", field_idx, mono_error_get_message (error));
10733 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, err_msg);
10736 field->type = mono_class_inflate_generic_type_no_copy (image, gtype, mono_class_get_context (klass), error);
10737 if (!mono_error_ok (error)) {
10738 char *err_msg = g_strdup_printf ("Could not load field %d type due to: %s", field_idx, mono_error_get_message (error));
10739 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, err_msg);
10743 guint32 cols [MONO_FIELD_SIZE];
10744 MonoGenericContainer *container = NULL;
10745 int idx = klass->field.first + field_idx;
10747 /*FIXME, in theory we do not lazy load SRE fields*/
10748 g_assert (!image_is_dynamic (image));
10750 if (klass->generic_container) {
10751 container = klass->generic_container;
10753 container = gtd->generic_container;
10754 g_assert (container);
10757 /* klass->field.first and idx points into the fieldptr table */
10758 mono_metadata_decode_table_row (image, MONO_TABLE_FIELD, idx, cols, MONO_FIELD_SIZE);
10760 if (!mono_verifier_verify_field_signature (image, cols [MONO_FIELD_SIGNATURE], NULL)) {
10761 mono_error_set_type_load_class (error, klass, "Could not verify field %s signature", field->name);;
10762 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, g_strdup (mono_error_get_message (error)));
10766 sig = mono_metadata_blob_heap (image, cols [MONO_FIELD_SIGNATURE]);
10768 mono_metadata_decode_value (sig, &sig);
10769 /* FIELD signature == 0x06 */
10770 g_assert (*sig == 0x06);
10772 field->type = mono_metadata_parse_type_checked (image, container, cols [MONO_FIELD_FLAGS], FALSE, sig + 1, &sig, error);
10773 if (!field->type) {
10774 char *err_msg = g_strdup_printf ("Could not load field %d type due to: %s", field_idx, mono_error_get_message (error));
10775 mono_class_set_failure (klass, MONO_EXCEPTION_TYPE_LOAD, err_msg);
10781 mono_field_resolve_flags (MonoClassField *field)
10783 MonoClass *klass = field->parent;
10784 MonoImage *image = klass->image;
10785 MonoClass *gtd = klass->generic_class ? mono_class_get_generic_type_definition (klass) : NULL;
10786 int field_idx = field - klass->fields;
10790 MonoClassField *gfield = >d->fields [field_idx];
10791 return mono_field_get_flags (gfield);
10793 int idx = klass->field.first + field_idx;
10795 /*FIXME, in theory we do not lazy load SRE fields*/
10796 g_assert (!image_is_dynamic (image));
10798 return mono_metadata_decode_table_row_col (image, MONO_TABLE_FIELD, idx, MONO_FIELD_FLAGS);
10803 * mono_class_setup_basic_field_info:
10804 * @class: The class to initialize
10806 * Initializes the klass->fields array of fields.
10807 * Aquires the loader lock.
10810 mono_class_setup_basic_field_info_locking (MonoClass *klass)
10812 mono_loader_lock ();
10813 mono_class_setup_basic_field_info (klass);
10814 mono_loader_unlock ();
10818 * mono_class_get_fields_lazy:
10819 * @klass: the MonoClass to act on
10821 * This routine is an iterator routine for retrieving the fields in a class.
10822 * Only minimal information about fields are loaded. Accessors must be used
10823 * for all MonoClassField returned.
10825 * You must pass a gpointer that points to zero and is treated as an opaque handle to
10826 * iterate over all of the elements. When no more values are
10827 * available, the return value is NULL.
10829 * Returns: a @MonoClassField* on each iteration, or NULL when no more fields are available.
10832 mono_class_get_fields_lazy (MonoClass* klass, gpointer *iter)
10834 MonoClassField* field;
10838 mono_class_setup_basic_field_info_locking (klass);
10839 if (!klass->fields)
10841 /* start from the first */
10842 if (klass->field.count) {
10843 *iter = &klass->fields [0];
10844 return (MonoClassField *)*iter;
10850 field = (MonoClassField *)*iter;
10852 if (field < &klass->fields [klass->field.count]) {
10854 return (MonoClassField *)*iter;
10860 mono_class_full_name (MonoClass *klass)
10862 return mono_type_full_name (&klass->byval_arg);
10865 /* Declare all shared lazy type lookup functions */
10866 GENERATE_TRY_GET_CLASS_WITH_CACHE (safehandle, System.Runtime.InteropServices, SafeHandle)