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)
10 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
20 #include <mono/metadata/image.h>
21 #include <mono/metadata/image-internals.h>
22 #include <mono/metadata/assembly.h>
23 #include <mono/metadata/assembly-internals.h>
24 #include <mono/metadata/metadata.h>
25 #include <mono/metadata/metadata-internals.h>
26 #include <mono/metadata/profiler-private.h>
27 #include <mono/metadata/tabledefs.h>
28 #include <mono/metadata/tokentype.h>
29 #include <mono/metadata/class-internals.h>
30 #include <mono/metadata/object.h>
31 #include <mono/metadata/appdomain.h>
32 #include <mono/metadata/mono-endian.h>
33 #include <mono/metadata/debug-helpers.h>
34 #include <mono/metadata/reflection.h>
35 #include <mono/metadata/exception.h>
36 #include <mono/metadata/security-manager.h>
37 #include <mono/metadata/security-core-clr.h>
38 #include <mono/metadata/attrdefs.h>
39 #include <mono/metadata/gc-internals.h>
40 #include <mono/metadata/verify-internals.h>
41 #include <mono/metadata/mono-debug.h>
42 #include <mono/utils/mono-counters.h>
43 #include <mono/utils/mono-string.h>
44 #include <mono/utils/mono-error-internals.h>
45 #include <mono/utils/mono-logger-internals.h>
46 #include <mono/utils/mono-memory-model.h>
47 #include <mono/utils/atomic.h>
48 #include <mono/utils/bsearch.h>
49 #include <mono/utils/checked-build.h>
53 gboolean mono_print_vtable = FALSE;
54 gboolean mono_align_small_structs = FALSE;
57 guint32 inflated_classes_size, inflated_methods_size;
58 guint32 classes_size, class_ext_size, class_ext_count;
59 guint32 class_def_count, class_gtd_count, class_ginst_count, class_gparam_count, class_array_count, class_pointer_count;
61 /* Low level lock which protects data structures in this module */
62 static mono_mutex_t classes_mutex;
64 /* Function supplied by the runtime to find classes by name using information from the AOT file */
65 static MonoGetClassFromName get_class_from_name = NULL;
67 static MonoClass * mono_class_create_from_typedef (MonoImage *image, guint32 type_token, MonoError *error);
68 static gboolean mono_class_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res);
69 static gboolean can_access_type (MonoClass *access_klass, MonoClass *member_klass);
70 static MonoMethod* find_method_in_metadata (MonoClass *klass, const char *name, int param_count, int flags);
71 static int generic_array_methods (MonoClass *klass);
72 static void setup_generic_array_ifaces (MonoClass *klass, MonoClass *iface, MonoMethod **methods, int pos);
74 static MonoMethod* mono_class_get_virtual_methods (MonoClass* klass, gpointer *iter);
75 static char* mono_assembly_name_from_token (MonoImage *image, guint32 type_token);
76 static void mono_field_resolve_type (MonoClassField *field, MonoError *error);
77 static guint32 mono_field_resolve_flags (MonoClassField *field);
78 static void mono_class_setup_vtable_full (MonoClass *klass, GList *in_setup);
79 static void mono_generic_class_setup_parent (MonoClass *klass, MonoClass *gklass);
81 static gboolean mono_class_set_failure (MonoClass *klass, MonoErrorBoxed *boxed_error);
85 We use gclass recording to allow recursive system f types to be referenced by a parent.
87 Given the following type hierarchy:
89 class TextBox : TextBoxBase<TextBox> {}
90 class TextBoxBase<T> : TextInput<TextBox> where T : TextBoxBase<T> {}
91 class TextInput<T> : Input<T> where T: TextInput<T> {}
94 The runtime tries to load TextBoxBase<>.
95 To load TextBoxBase<> to do so it must resolve the parent which is TextInput<TextBox>.
96 To instantiate TextInput<TextBox> it must resolve TextInput<> and TextBox.
97 To load TextBox it must resolve the parent which is TextBoxBase<TextBox>.
99 At this point the runtime must instantiate TextBoxBase<TextBox>. Both types are partially loaded
100 at this point, iow, both are registered in the type map and both and a NULL parent. This means
101 that the resulting generic instance will have a NULL parent, which is wrong and will cause breakage.
103 To fix that what we do is to record all generic instantes created while resolving the parent of
104 any generic type definition and, after resolved, correct the parent field if needed.
107 static int record_gclass_instantiation;
108 static GSList *gclass_recorded_list;
109 typedef gboolean (*gclass_record_func) (MonoClass*, void*);
111 /* This TLS variable points to a GSList of classes which have setup_fields () executing */
112 static MonoNativeTlsKey setup_fields_tls_id;
114 static MonoNativeTlsKey init_pending_tls_id;
119 mono_locks_os_acquire (&classes_mutex, ClassesLock);
123 classes_unlock (void)
125 mono_locks_os_release (&classes_mutex, ClassesLock);
129 * LOCKING: loader lock must be held until pairing disable_gclass_recording is called.
132 enable_gclass_recording (void)
134 ++record_gclass_instantiation;
138 * LOCKING: loader lock must be held since pairing enable_gclass_recording was called.
141 disable_gclass_recording (gclass_record_func func, void *user_data)
143 GSList **head = &gclass_recorded_list;
145 g_assert (record_gclass_instantiation > 0);
146 --record_gclass_instantiation;
149 GSList *node = *head;
150 if (func ((MonoClass*)node->data, user_data)) {
152 g_slist_free_1 (node);
158 /* We automatically discard all recorded gclasses when disabled. */
159 if (!record_gclass_instantiation && gclass_recorded_list) {
160 g_slist_free (gclass_recorded_list);
161 gclass_recorded_list = NULL;
166 * mono_class_from_typeref:
167 * @image: a MonoImage
168 * @type_token: a TypeRef token
170 * Creates the MonoClass* structure representing the type defined by
171 * the typeref token valid inside @image.
172 * Returns: The MonoClass* representing the typeref token, NULL ifcould
176 mono_class_from_typeref (MonoImage *image, guint32 type_token)
179 MonoClass *klass = mono_class_from_typeref_checked (image, type_token, &error);
180 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
185 * mono_class_from_typeref_checked:
186 * @image: a MonoImage
187 * @type_token: a TypeRef token
188 * @error: error return code, if any.
190 * Creates the MonoClass* structure representing the type defined by
191 * the typeref token valid inside @image.
193 * Returns: The MonoClass* representing the typeref token, NULL if it could
194 * not be loaded with the @error value filled with the information about the
198 mono_class_from_typeref_checked (MonoImage *image, guint32 type_token, MonoError *error)
200 guint32 cols [MONO_TYPEREF_SIZE];
201 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEREF];
203 const char *name, *nspace;
204 MonoClass *res = NULL;
207 mono_error_init (error);
209 if (!mono_verifier_verify_typeref_row (image, (type_token & 0xffffff) - 1, error))
212 mono_metadata_decode_row (t, (type_token&0xffffff)-1, cols, MONO_TYPEREF_SIZE);
214 name = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAME]);
215 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAMESPACE]);
217 idx = cols [MONO_TYPEREF_SCOPE] >> MONO_RESOLUTION_SCOPE_BITS;
218 switch (cols [MONO_TYPEREF_SCOPE] & MONO_RESOLUTION_SCOPE_MASK) {
219 case MONO_RESOLUTION_SCOPE_MODULE:
221 LAMESPEC The spec says that a null module resolution scope should go through the exported type table.
222 This is not the observed behavior of existing implementations.
223 The defacto behavior is that it's just a typedef in disguise.
225 /* a typedef in disguise */
226 res = mono_class_from_name_checked (image, nspace, name, error);
229 case MONO_RESOLUTION_SCOPE_MODULEREF:
230 module = mono_image_load_module_checked (image, idx, error);
232 res = mono_class_from_name_checked (module, nspace, name, error);
235 case MONO_RESOLUTION_SCOPE_TYPEREF: {
236 MonoClass *enclosing;
239 if (idx == mono_metadata_token_index (type_token)) {
240 mono_error_set_bad_image (error, image, "Image with self-referencing typeref token %08x.", type_token);
244 enclosing = mono_class_from_typeref_checked (image, MONO_TOKEN_TYPE_REF | idx, error);
245 return_val_if_nok (error, NULL);
247 GList *nested_classes = mono_class_get_nested_classes_property (enclosing);
248 if (enclosing->nested_classes_inited && nested_classes) {
249 /* Micro-optimization: don't scan the metadata tables if enclosing is already inited */
250 for (tmp = nested_classes; tmp; tmp = tmp->next) {
251 res = (MonoClass *)tmp->data;
252 if (strcmp (res->name, name) == 0)
256 /* Don't call mono_class_init as we might've been called by it recursively */
257 int i = mono_metadata_nesting_typedef (enclosing->image, enclosing->type_token, 1);
259 guint32 class_nested = mono_metadata_decode_row_col (&enclosing->image->tables [MONO_TABLE_NESTEDCLASS], i - 1, MONO_NESTED_CLASS_NESTED);
260 guint32 string_offset = mono_metadata_decode_row_col (&enclosing->image->tables [MONO_TABLE_TYPEDEF], class_nested - 1, MONO_TYPEDEF_NAME);
261 const char *nname = mono_metadata_string_heap (enclosing->image, string_offset);
263 if (strcmp (nname, name) == 0)
264 return mono_class_create_from_typedef (enclosing->image, MONO_TOKEN_TYPE_DEF | class_nested, error);
266 i = mono_metadata_nesting_typedef (enclosing->image, enclosing->type_token, i + 1);
269 g_warning ("TypeRef ResolutionScope not yet handled (%d) for %s.%s in image %s", idx, nspace, name, image->name);
272 case MONO_RESOLUTION_SCOPE_ASSEMBLYREF:
276 if (idx > image->tables [MONO_TABLE_ASSEMBLYREF].rows) {
277 mono_error_set_bad_image (error, image, "Image with invalid assemblyref token %08x.", idx);
281 if (!image->references || !image->references [idx - 1])
282 mono_assembly_load_reference (image, idx - 1);
283 g_assert (image->references [idx - 1]);
285 /* If the assembly did not load, register this as a type load exception */
286 if (image->references [idx - 1] == REFERENCE_MISSING){
287 MonoAssemblyName aname;
290 mono_assembly_get_assemblyref (image, idx - 1, &aname);
291 human_name = mono_stringify_assembly_name (&aname);
292 mono_error_set_assembly_load_simple (error, human_name, image->assembly ? image->assembly->ref_only : FALSE);
296 res = mono_class_from_name_checked (image->references [idx - 1]->image, nspace, name, error);
299 /* Generic case, should be avoided for when a better error is possible. */
300 if (!res && mono_error_ok (error)) {
301 char *name = mono_class_name_from_token (image, type_token);
302 char *assembly = mono_assembly_name_from_token (image, type_token);
303 mono_error_set_type_load_name (error, name, assembly, "Could not resolve type with token %08x", type_token);
310 mono_image_memdup (MonoImage *image, void *data, guint size)
312 void *res = mono_image_alloc (image, size);
313 memcpy (res, data, size);
317 /* Copy everything mono_metadata_free_array free. */
319 mono_dup_array_type (MonoImage *image, MonoArrayType *a)
322 a = (MonoArrayType *)mono_image_memdup (image, a, sizeof (MonoArrayType));
324 a->sizes = (int *)mono_image_memdup (image, a->sizes, a->numsizes * sizeof (int));
326 a->lobounds = (int *)mono_image_memdup (image, a->lobounds, a->numlobounds * sizeof (int));
328 a = (MonoArrayType *)g_memdup (a, sizeof (MonoArrayType));
330 a->sizes = (int *)g_memdup (a->sizes, a->numsizes * sizeof (int));
332 a->lobounds = (int *)g_memdup (a->lobounds, a->numlobounds * sizeof (int));
337 /* Copy everything mono_metadata_free_method_signature free. */
339 mono_metadata_signature_deep_dup (MonoImage *image, MonoMethodSignature *sig)
343 sig = mono_metadata_signature_dup_full (image, sig);
345 sig->ret = mono_metadata_type_dup (image, sig->ret);
346 for (i = 0; i < sig->param_count; ++i)
347 sig->params [i] = mono_metadata_type_dup (image, sig->params [i]);
353 _mono_type_get_assembly_name (MonoClass *klass, GString *str)
355 MonoAssembly *ta = klass->image->assembly;
358 name = mono_stringify_assembly_name (&ta->aname);
359 g_string_append_printf (str, ", %s", name);
364 mono_type_name_check_byref (MonoType *type, GString *str)
367 g_string_append_c (str, '&');
371 * mono_identifier_escape_type_name_chars:
372 * @str: a destination string
373 * @identifier: an IDENTIFIER in internal form
377 * The displayed form of the identifier is appended to str.
379 * The displayed form of an identifier has the characters ,+&*[]\
380 * that have special meaning in type names escaped with a preceeding
381 * backslash (\) character.
384 mono_identifier_escape_type_name_chars (GString* str, const char* identifier)
390 // reserve space for common case: there will be no escaped characters.
391 g_string_set_size(str, n + strlen(identifier));
392 g_string_set_size(str, n);
394 for (const char* s = identifier; *s != 0 ; s++) {
403 g_string_append_c (str, '\\');
404 g_string_append_c (str, *s);
407 g_string_append_c (str, *s);
415 mono_type_get_name_recurse (MonoType *type, GString *str, gboolean is_recursed,
416 MonoTypeNameFormat format)
420 switch (type->type) {
421 case MONO_TYPE_ARRAY: {
422 int i, rank = type->data.array->rank;
423 MonoTypeNameFormat nested_format;
425 nested_format = format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED ?
426 MONO_TYPE_NAME_FORMAT_FULL_NAME : format;
428 mono_type_get_name_recurse (
429 &type->data.array->eklass->byval_arg, str, FALSE, nested_format);
430 g_string_append_c (str, '[');
432 g_string_append_c (str, '*');
433 for (i = 1; i < rank; i++)
434 g_string_append_c (str, ',');
435 g_string_append_c (str, ']');
437 mono_type_name_check_byref (type, str);
439 if (format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED)
440 _mono_type_get_assembly_name (type->data.array->eklass, str);
443 case MONO_TYPE_SZARRAY: {
444 MonoTypeNameFormat nested_format;
446 nested_format = format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED ?
447 MONO_TYPE_NAME_FORMAT_FULL_NAME : format;
449 mono_type_get_name_recurse (
450 &type->data.klass->byval_arg, str, FALSE, nested_format);
451 g_string_append (str, "[]");
453 mono_type_name_check_byref (type, str);
455 if (format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED)
456 _mono_type_get_assembly_name (type->data.klass, str);
459 case MONO_TYPE_PTR: {
460 MonoTypeNameFormat nested_format;
462 nested_format = format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED ?
463 MONO_TYPE_NAME_FORMAT_FULL_NAME : format;
465 mono_type_get_name_recurse (
466 type->data.type, str, FALSE, nested_format);
467 g_string_append_c (str, '*');
469 mono_type_name_check_byref (type, str);
471 if (format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED)
472 _mono_type_get_assembly_name (mono_class_from_mono_type (type->data.type), str);
477 if (!mono_generic_param_info (type->data.generic_param))
478 g_string_append_printf (str, "%s%d", type->type == MONO_TYPE_VAR ? "!" : "!!", type->data.generic_param->num);
480 g_string_append (str, mono_generic_param_info (type->data.generic_param)->name);
482 mono_type_name_check_byref (type, str);
486 klass = mono_class_from_mono_type (type);
487 if (klass->nested_in) {
488 mono_type_get_name_recurse (
489 &klass->nested_in->byval_arg, str, TRUE, format);
490 if (format == MONO_TYPE_NAME_FORMAT_IL)
491 g_string_append_c (str, '.');
493 g_string_append_c (str, '+');
494 } else if (*klass->name_space) {
495 if (format == MONO_TYPE_NAME_FORMAT_IL)
496 g_string_append (str, klass->name_space);
498 mono_identifier_escape_type_name_chars (str, klass->name_space);
499 g_string_append_c (str, '.');
501 if (format == MONO_TYPE_NAME_FORMAT_IL) {
502 char *s = strchr (klass->name, '`');
503 int len = s ? s - klass->name : strlen (klass->name);
504 g_string_append_len (str, klass->name, len);
506 mono_identifier_escape_type_name_chars (str, klass->name);
510 if (mono_class_is_ginst (klass)) {
511 MonoGenericClass *gclass = mono_class_get_generic_class (klass);
512 MonoGenericInst *inst = gclass->context.class_inst;
513 MonoTypeNameFormat nested_format;
516 nested_format = format == MONO_TYPE_NAME_FORMAT_FULL_NAME ?
517 MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED : format;
519 if (format == MONO_TYPE_NAME_FORMAT_IL)
520 g_string_append_c (str, '<');
522 g_string_append_c (str, '[');
523 for (i = 0; i < inst->type_argc; i++) {
524 MonoType *t = inst->type_argv [i];
527 g_string_append_c (str, ',');
528 if ((nested_format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED) &&
529 (t->type != MONO_TYPE_VAR) && (type->type != MONO_TYPE_MVAR))
530 g_string_append_c (str, '[');
531 mono_type_get_name_recurse (inst->type_argv [i], str, FALSE, nested_format);
532 if ((nested_format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED) &&
533 (t->type != MONO_TYPE_VAR) && (type->type != MONO_TYPE_MVAR))
534 g_string_append_c (str, ']');
536 if (format == MONO_TYPE_NAME_FORMAT_IL)
537 g_string_append_c (str, '>');
539 g_string_append_c (str, ']');
540 } else if (mono_class_is_gtd (klass) &&
541 (format != MONO_TYPE_NAME_FORMAT_FULL_NAME) &&
542 (format != MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED)) {
545 if (format == MONO_TYPE_NAME_FORMAT_IL)
546 g_string_append_c (str, '<');
548 g_string_append_c (str, '[');
549 for (i = 0; i < mono_class_get_generic_container (klass)->type_argc; i++) {
551 g_string_append_c (str, ',');
552 g_string_append (str, mono_generic_container_get_param_info (mono_class_get_generic_container (klass), i)->name);
554 if (format == MONO_TYPE_NAME_FORMAT_IL)
555 g_string_append_c (str, '>');
557 g_string_append_c (str, ']');
560 mono_type_name_check_byref (type, str);
562 if ((format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED) &&
563 (type->type != MONO_TYPE_VAR) && (type->type != MONO_TYPE_MVAR))
564 _mono_type_get_assembly_name (klass, str);
570 * mono_type_get_name_full:
572 * @format: the format for the return string.
575 * Returns: The string representation in a number of formats:
577 * if format is MONO_TYPE_NAME_FORMAT_REFLECTION, the return string is
578 * returned in the formatrequired by System.Reflection, this is the
579 * inverse of mono_reflection_parse_type ().
581 * if format is MONO_TYPE_NAME_FORMAT_IL, it returns a syntax that can
582 * be used by the IL assembler.
584 * if format is MONO_TYPE_NAME_FORMAT_FULL_NAME
586 * if format is MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED
589 mono_type_get_name_full (MonoType *type, MonoTypeNameFormat format)
593 result = g_string_new ("");
595 mono_type_get_name_recurse (type, result, FALSE, format);
597 return g_string_free (result, FALSE);
601 * mono_type_get_full_name:
604 * Returns: The string representation for type as required by System.Reflection.
605 * The inverse of mono_reflection_parse_type ().
608 mono_type_get_full_name (MonoClass *klass)
610 return mono_type_get_name_full (mono_class_get_type (klass), MONO_TYPE_NAME_FORMAT_REFLECTION);
614 * mono_type_get_name:
617 * Returns: The string representation for type as it would be represented in IL code.
620 mono_type_get_name (MonoType *type)
622 return mono_type_get_name_full (type, MONO_TYPE_NAME_FORMAT_IL);
626 * mono_type_get_underlying_type:
629 * Returns: The MonoType for the underlying integer type if @type
630 * is an enum and byref is false, otherwise the type itself.
633 mono_type_get_underlying_type (MonoType *type)
635 if (type->type == MONO_TYPE_VALUETYPE && type->data.klass->enumtype && !type->byref)
636 return mono_class_enum_basetype (type->data.klass);
637 if (type->type == MONO_TYPE_GENERICINST && type->data.generic_class->container_class->enumtype && !type->byref)
638 return mono_class_enum_basetype (type->data.generic_class->container_class);
643 * mono_class_is_open_constructed_type:
646 * Returns: TRUE if type represents a generics open constructed type.
647 * IOW, not all type parameters required for the instantiation have
648 * been provided or it's a generic type definition.
650 * An open constructed type means it's a non realizable type. Not to
651 * be mixed up with an abstract type - we can't cast or dispatch to
652 * an open type, for example.
655 mono_class_is_open_constructed_type (MonoType *t)
661 case MONO_TYPE_SZARRAY:
662 return mono_class_is_open_constructed_type (&t->data.klass->byval_arg);
663 case MONO_TYPE_ARRAY:
664 return mono_class_is_open_constructed_type (&t->data.array->eklass->byval_arg);
666 return mono_class_is_open_constructed_type (t->data.type);
667 case MONO_TYPE_GENERICINST:
668 return t->data.generic_class->context.class_inst->is_open;
669 case MONO_TYPE_CLASS:
670 case MONO_TYPE_VALUETYPE:
671 return mono_class_is_gtd (t->data.klass);
678 This is a simple function to catch the most common bad instances of generic types.
679 Specially those that might lead to further failures in the runtime.
682 is_valid_generic_argument (MonoType *type)
684 switch (type->type) {
686 //case MONO_TYPE_TYPEDBYREF:
694 inflate_generic_type (MonoImage *image, MonoType *type, MonoGenericContext *context, MonoError *error)
696 mono_error_init (error);
698 switch (type->type) {
699 case MONO_TYPE_MVAR: {
701 int num = mono_type_get_generic_param_num (type);
702 MonoGenericInst *inst = context->method_inst;
705 if (num >= inst->type_argc) {
706 MonoGenericParamInfo *info = mono_generic_param_info (type->data.generic_param);
707 mono_error_set_bad_image (error, image, "MVAR %d (%s) cannot be expanded in this context with %d instantiations",
708 num, info ? info->name : "", inst->type_argc);
712 if (!is_valid_generic_argument (inst->type_argv [num])) {
713 MonoGenericParamInfo *info = mono_generic_param_info (type->data.generic_param);
714 mono_error_set_bad_image (error, image, "MVAR %d (%s) cannot be expanded with type 0x%x",
715 num, info ? info->name : "", inst->type_argv [num]->type);
719 * Note that the VAR/MVAR cases are different from the rest. The other cases duplicate @type,
720 * while the VAR/MVAR duplicates a type from the context. So, we need to ensure that the
721 * ->byref and ->attrs from @type are propagated to the returned type.
723 nt = mono_metadata_type_dup (image, inst->type_argv [num]);
724 nt->byref = type->byref;
725 nt->attrs = type->attrs;
728 case MONO_TYPE_VAR: {
730 int num = mono_type_get_generic_param_num (type);
731 MonoGenericInst *inst = context->class_inst;
734 if (num >= inst->type_argc) {
735 MonoGenericParamInfo *info = mono_generic_param_info (type->data.generic_param);
736 mono_error_set_bad_image (error, image, "VAR %d (%s) cannot be expanded in this context with %d instantiations",
737 num, info ? info->name : "", inst->type_argc);
740 if (!is_valid_generic_argument (inst->type_argv [num])) {
741 MonoGenericParamInfo *info = mono_generic_param_info (type->data.generic_param);
742 mono_error_set_bad_image (error, image, "VAR %d (%s) cannot be expanded with type 0x%x",
743 num, info ? info->name : "", inst->type_argv [num]->type);
746 nt = mono_metadata_type_dup (image, inst->type_argv [num]);
747 nt->byref = type->byref;
748 nt->attrs = type->attrs;
751 case MONO_TYPE_SZARRAY: {
752 MonoClass *eclass = type->data.klass;
753 MonoType *nt, *inflated = inflate_generic_type (NULL, &eclass->byval_arg, context, error);
754 if (!inflated || !mono_error_ok (error))
756 nt = mono_metadata_type_dup (image, type);
757 nt->data.klass = mono_class_from_mono_type (inflated);
758 mono_metadata_free_type (inflated);
761 case MONO_TYPE_ARRAY: {
762 MonoClass *eclass = type->data.array->eklass;
763 MonoType *nt, *inflated = inflate_generic_type (NULL, &eclass->byval_arg, context, error);
764 if (!inflated || !mono_error_ok (error))
766 nt = mono_metadata_type_dup (image, type);
767 nt->data.array->eklass = mono_class_from_mono_type (inflated);
768 mono_metadata_free_type (inflated);
771 case MONO_TYPE_GENERICINST: {
772 MonoGenericClass *gclass = type->data.generic_class;
773 MonoGenericInst *inst;
775 if (!gclass->context.class_inst->is_open)
778 inst = mono_metadata_inflate_generic_inst (gclass->context.class_inst, context, error);
779 return_val_if_nok (error, NULL);
781 if (inst != gclass->context.class_inst)
782 gclass = mono_metadata_lookup_generic_class (gclass->container_class, inst, gclass->is_dynamic);
784 if (gclass == type->data.generic_class)
787 nt = mono_metadata_type_dup (image, type);
788 nt->data.generic_class = gclass;
791 case MONO_TYPE_CLASS:
792 case MONO_TYPE_VALUETYPE: {
793 MonoClass *klass = type->data.klass;
794 MonoGenericContainer *container = mono_class_try_get_generic_container (klass);
795 MonoGenericInst *inst;
796 MonoGenericClass *gclass = NULL;
802 /* We can't use context->class_inst directly, since it can have more elements */
803 inst = mono_metadata_inflate_generic_inst (container->context.class_inst, context, error);
804 return_val_if_nok (error, NULL);
806 if (inst == container->context.class_inst)
809 gclass = mono_metadata_lookup_generic_class (klass, inst, image_is_dynamic (klass->image));
811 nt = mono_metadata_type_dup (image, type);
812 nt->type = MONO_TYPE_GENERICINST;
813 nt->data.generic_class = gclass;
823 mono_generic_class_get_context (MonoGenericClass *gclass)
825 return &gclass->context;
829 mono_class_get_context (MonoClass *klass)
831 MonoGenericClass *gklass = mono_class_try_get_generic_class (klass);
832 return gklass ? mono_generic_class_get_context (gklass) : NULL;
836 * mono_class_inflate_generic_type_with_mempool:
837 * @mempool: a mempool
839 * @context: a generics context
840 * @error: error context
842 * The same as mono_class_inflate_generic_type, but allocates the MonoType
843 * from mempool if it is non-NULL. If it is NULL, the MonoType is
844 * allocated on the heap and is owned by the caller.
845 * The returned type can potentially be the same as TYPE, so it should not be
846 * modified by the caller, and it should be freed using mono_metadata_free_type ().
849 mono_class_inflate_generic_type_with_mempool (MonoImage *image, MonoType *type, MonoGenericContext *context, MonoError *error)
851 MonoType *inflated = NULL;
852 mono_error_init (error);
855 inflated = inflate_generic_type (image, type, context, error);
856 return_val_if_nok (error, NULL);
859 MonoType *shared = mono_metadata_get_shared_type (type);
864 return mono_metadata_type_dup (image, type);
868 mono_stats.inflated_type_count++;
873 * mono_class_inflate_generic_type:
875 * @context: a generics context
877 * If @type is a generic type and @context is not NULL, instantiate it using the
878 * generics context @context.
880 * Returns: The instantiated type or a copy of @type. The returned MonoType is allocated
881 * on the heap and is owned by the caller. Returns NULL on error.
883 * @deprecated Please use mono_class_inflate_generic_type_checked instead
886 mono_class_inflate_generic_type (MonoType *type, MonoGenericContext *context)
890 result = mono_class_inflate_generic_type_checked (type, context, &error);
891 mono_error_cleanup (&error);
896 * mono_class_inflate_generic_type:
898 * @context: a generics context
899 * @error: error context to use
901 * If @type is a generic type and @context is not NULL, instantiate it using the
902 * generics context @context.
904 * Returns: The instantiated type or a copy of @type. The returned MonoType is allocated
905 * on the heap and is owned by the caller.
908 mono_class_inflate_generic_type_checked (MonoType *type, MonoGenericContext *context, MonoError *error)
910 return mono_class_inflate_generic_type_with_mempool (NULL, type, context, error);
914 * mono_class_inflate_generic_type_no_copy:
916 * Same as inflate_generic_type_with_mempool, but return TYPE if no inflation
920 mono_class_inflate_generic_type_no_copy (MonoImage *image, MonoType *type, MonoGenericContext *context, MonoError *error)
922 MonoType *inflated = NULL;
924 mono_error_init (error);
926 inflated = inflate_generic_type (image, type, context, error);
927 return_val_if_nok (error, NULL);
933 mono_stats.inflated_type_count++;
938 * mono_class_inflate_generic_class:
940 * Inflate the class @gklass with @context. Set @error on failure.
943 mono_class_inflate_generic_class_checked (MonoClass *gklass, MonoGenericContext *context, MonoError *error)
948 inflated = mono_class_inflate_generic_type_checked (&gklass->byval_arg, context, error);
949 return_val_if_nok (error, NULL);
951 res = mono_class_from_mono_type (inflated);
952 mono_metadata_free_type (inflated);
957 static MonoGenericContext
958 inflate_generic_context (MonoGenericContext *context, MonoGenericContext *inflate_with, MonoError *error)
960 MonoGenericInst *class_inst = NULL;
961 MonoGenericInst *method_inst = NULL;
962 MonoGenericContext res = { NULL, NULL };
964 mono_error_init (error);
966 if (context->class_inst) {
967 class_inst = mono_metadata_inflate_generic_inst (context->class_inst, inflate_with, error);
968 if (!mono_error_ok (error))
972 if (context->method_inst) {
973 method_inst = mono_metadata_inflate_generic_inst (context->method_inst, inflate_with, error);
974 if (!mono_error_ok (error))
978 res.class_inst = class_inst;
979 res.method_inst = method_inst;
985 * mono_class_inflate_generic_method:
986 * @method: a generic method
987 * @context: a generics context
989 * Instantiate the generic method @method using the generics context @context.
991 * Returns: The new instantiated method
994 mono_class_inflate_generic_method (MonoMethod *method, MonoGenericContext *context)
996 return mono_class_inflate_generic_method_full (method, NULL, context);
1000 mono_class_inflate_generic_method_checked (MonoMethod *method, MonoGenericContext *context, MonoError *error)
1002 return mono_class_inflate_generic_method_full_checked (method, NULL, context, error);
1006 * mono_class_inflate_generic_method_full:
1008 * Instantiate method @method with the generic context @context.
1009 * BEWARE: All non-trivial fields are invalid, including klass, signature, and header.
1010 * Use mono_method_signature () and mono_method_get_header () to get the correct values.
1013 mono_class_inflate_generic_method_full (MonoMethod *method, MonoClass *klass_hint, MonoGenericContext *context)
1016 MonoMethod *res = mono_class_inflate_generic_method_full_checked (method, klass_hint, context, &error);
1017 if (!mono_error_ok (&error))
1018 /*FIXME do proper error handling - on this case, kill this function. */
1019 g_error ("Could not inflate generic method due to %s", mono_error_get_message (&error));
1025 * mono_class_inflate_generic_method_full_checked:
1026 * Same as mono_class_inflate_generic_method_full but return failure using @error.
1029 mono_class_inflate_generic_method_full_checked (MonoMethod *method, MonoClass *klass_hint, MonoGenericContext *context, MonoError *error)
1032 MonoMethodInflated *iresult, *cached;
1033 MonoMethodSignature *sig;
1034 MonoGenericContext tmp_context;
1036 mono_error_init (error);
1038 /* The `method' has already been instantiated before => we need to peel out the instantiation and create a new context */
1039 while (method->is_inflated) {
1040 MonoGenericContext *method_context = mono_method_get_context (method);
1041 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
1043 tmp_context = inflate_generic_context (method_context, context, error);
1044 return_val_if_nok (error, NULL);
1046 context = &tmp_context;
1048 if (mono_metadata_generic_context_equal (method_context, context))
1051 method = imethod->declaring;
1055 * A method only needs to be inflated if the context has argument for which it is
1058 * class Foo<T> { void Bar(); } - doesn't need to be inflated if only mvars' are supplied
1059 * class Foo { void Bar<T> (); } - doesn't need to be if only vars' are supplied
1062 if (!((method->is_generic && context->method_inst) ||
1063 (mono_class_is_gtd (method->klass) && context->class_inst)))
1066 iresult = g_new0 (MonoMethodInflated, 1);
1067 iresult->context = *context;
1068 iresult->declaring = method;
1070 if (!context->method_inst && method->is_generic)
1071 iresult->context.method_inst = mono_method_get_generic_container (method)->context.method_inst;
1073 if (!context->class_inst) {
1074 g_assert (!mono_class_is_ginst (iresult->declaring->klass));
1075 if (mono_class_is_gtd (iresult->declaring->klass))
1076 iresult->context.class_inst = mono_class_get_generic_container (iresult->declaring->klass)->context.class_inst;
1078 /* This can happen with some callers like mono_object_get_virtual_method () */
1079 if (!mono_class_is_gtd (iresult->declaring->klass) && !mono_class_is_ginst (iresult->declaring->klass))
1080 iresult->context.class_inst = NULL;
1082 MonoImageSet *set = mono_metadata_get_image_set_for_method (iresult);
1085 mono_image_set_lock (set);
1086 cached = (MonoMethodInflated *)g_hash_table_lookup (set->gmethod_cache, iresult);
1087 mono_image_set_unlock (set);
1091 return (MonoMethod*)cached;
1094 mono_stats.inflated_method_count++;
1096 inflated_methods_size += sizeof (MonoMethodInflated);
1098 sig = mono_method_signature (method);
1100 char *name = mono_type_get_full_name (method->klass);
1101 mono_error_set_bad_image (error, method->klass->image, "Could not resolve signature of method %s:%s", name, method->name);
1107 memcpy (&iresult->method.pinvoke, method, sizeof (MonoMethodPInvoke));
1109 memcpy (&iresult->method.method, method, sizeof (MonoMethod));
1112 result = (MonoMethod *) iresult;
1113 result->is_inflated = TRUE;
1114 result->is_generic = FALSE;
1115 result->sre_method = FALSE;
1116 result->signature = NULL;
1118 if (method->wrapper_type) {
1119 MonoMethodWrapper *mw = (MonoMethodWrapper*)method;
1120 MonoMethodWrapper *resw = (MonoMethodWrapper*)result;
1121 int len = GPOINTER_TO_INT (((void**)mw->method_data) [0]);
1123 resw->method_data = (void **)g_malloc (sizeof (gpointer) * (len + 1));
1124 memcpy (resw->method_data, mw->method_data, sizeof (gpointer) * (len + 1));
1127 if (iresult->context.method_inst) {
1128 /* Set the generic_container of the result to the generic_container of method */
1129 MonoGenericContainer *generic_container = mono_method_get_generic_container (method);
1131 if (generic_container && iresult->context.method_inst == generic_container->context.method_inst) {
1132 result->is_generic = 1;
1133 mono_method_set_generic_container (result, generic_container);
1138 MonoGenericClass *gklass_hint = mono_class_try_get_generic_class (klass_hint);
1139 if (gklass_hint && (gklass_hint->container_class != method->klass || gklass_hint->context.class_inst != context->class_inst))
1143 if (mono_class_is_gtd (method->klass))
1144 result->klass = klass_hint;
1146 if (!result->klass) {
1147 MonoType *inflated = inflate_generic_type (NULL, &method->klass->byval_arg, context, error);
1148 if (!mono_error_ok (error))
1151 result->klass = inflated ? mono_class_from_mono_type (inflated) : method->klass;
1153 mono_metadata_free_type (inflated);
1157 * FIXME: This should hold, but it doesn't:
1159 * if (result->is_inflated && mono_method_get_context (result)->method_inst &&
1160 * mono_method_get_context (result)->method_inst == mono_method_get_generic_container (((MonoMethodInflated*)result)->declaring)->context.method_inst) {
1161 * g_assert (result->is_generic);
1164 * Fixing this here causes other things to break, hence a very
1165 * ugly hack in mini-trampolines.c - see
1166 * is_generic_method_definition().
1170 mono_image_set_lock (set);
1171 cached = (MonoMethodInflated *)g_hash_table_lookup (set->gmethod_cache, iresult);
1173 g_hash_table_insert (set->gmethod_cache, iresult, iresult);
1174 iresult->owner = set;
1177 mono_image_set_unlock (set);
1179 return (MonoMethod*)cached;
1187 * mono_get_inflated_method:
1189 * Obsolete. We keep it around since it's mentioned in the public API.
1192 mono_get_inflated_method (MonoMethod *method)
1198 * mono_method_get_context_general:
1200 * @uninflated: handle uninflated methods?
1202 * Returns the generic context of a method or NULL if it doesn't have
1203 * one. For an inflated method that's the context stored in the
1204 * method. Otherwise it's in the method's generic container or in the
1205 * generic container of the method's class.
1208 mono_method_get_context_general (MonoMethod *method, gboolean uninflated)
1210 if (method->is_inflated) {
1211 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
1212 return &imethod->context;
1216 if (method->is_generic)
1217 return &(mono_method_get_generic_container (method)->context);
1218 if (mono_class_is_gtd (method->klass))
1219 return &mono_class_get_generic_container (method->klass)->context;
1224 * mono_method_get_context:
1227 * Returns the generic context for method if it's inflated, otherwise
1231 mono_method_get_context (MonoMethod *method)
1233 return mono_method_get_context_general (method, FALSE);
1237 * mono_method_get_generic_container:
1239 * Returns the generic container of METHOD, which should be a generic method definition.
1240 * Returns NULL if METHOD is not a generic method definition.
1241 * LOCKING: Acquires the loader lock.
1243 MonoGenericContainer*
1244 mono_method_get_generic_container (MonoMethod *method)
1246 MonoGenericContainer *container;
1248 if (!method->is_generic)
1251 container = (MonoGenericContainer *)mono_image_property_lookup (method->klass->image, method, MONO_METHOD_PROP_GENERIC_CONTAINER);
1252 g_assert (container);
1258 * mono_method_set_generic_container:
1260 * Sets the generic container of METHOD to CONTAINER.
1261 * LOCKING: Acquires the image lock.
1264 mono_method_set_generic_container (MonoMethod *method, MonoGenericContainer* container)
1266 g_assert (method->is_generic);
1268 mono_image_property_insert (method->klass->image, method, MONO_METHOD_PROP_GENERIC_CONTAINER, container);
1272 * mono_class_find_enum_basetype:
1273 * @class: The enum class
1275 * Determine the basetype of an enum by iterating through its fields. We do this
1276 * in a separate function since it is cheaper than calling mono_class_setup_fields.
1279 mono_class_find_enum_basetype (MonoClass *klass, MonoError *error)
1281 MonoGenericContainer *container = NULL;
1282 MonoImage *m = klass->image;
1283 const int top = mono_class_get_field_count (klass);
1284 int i, first_field_idx;
1286 g_assert (klass->enumtype);
1288 mono_error_init (error);
1290 container = mono_class_try_get_generic_container (klass);
1291 if (mono_class_is_ginst (klass)) {
1292 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
1294 container = mono_class_get_generic_container (gklass);
1295 g_assert (container);
1299 * Fetch all the field information.
1301 first_field_idx = mono_class_get_first_field_idx (klass);
1302 for (i = 0; i < top; i++){
1304 guint32 cols [MONO_FIELD_SIZE];
1305 int idx = first_field_idx + i;
1308 /* first_field_idx and idx points into the fieldptr table */
1309 mono_metadata_decode_table_row (m, MONO_TABLE_FIELD, idx, cols, MONO_FIELD_SIZE);
1311 if (cols [MONO_FIELD_FLAGS] & FIELD_ATTRIBUTE_STATIC) //no need to decode static fields
1314 if (!mono_verifier_verify_field_signature (klass->image, cols [MONO_FIELD_SIGNATURE], NULL)) {
1315 mono_error_set_bad_image (error, klass->image, "Invalid field signature %x", cols [MONO_FIELD_SIGNATURE]);
1319 sig = mono_metadata_blob_heap (m, cols [MONO_FIELD_SIGNATURE]);
1320 mono_metadata_decode_value (sig, &sig);
1321 /* FIELD signature == 0x06 */
1323 mono_error_set_bad_image (error, klass->image, "Invalid field signature %x, expected 0x6 but got %x", cols [MONO_FIELD_SIGNATURE], *sig);
1327 ftype = mono_metadata_parse_type_checked (m, container, cols [MONO_FIELD_FLAGS], FALSE, sig + 1, &sig, error);
1331 if (mono_class_is_ginst (klass)) {
1332 //FIXME do we leak here?
1333 ftype = mono_class_inflate_generic_type_checked (ftype, mono_class_get_context (klass), error);
1334 if (!mono_error_ok (error))
1336 ftype->attrs = cols [MONO_FIELD_FLAGS];
1341 mono_error_set_type_load_class (error, klass, "Could not find base type");
1348 * Checks for MonoClass::has_failure without resolving all MonoType's into MonoClass'es
1351 mono_type_has_exceptions (MonoType *type)
1353 switch (type->type) {
1354 case MONO_TYPE_CLASS:
1355 case MONO_TYPE_VALUETYPE:
1356 case MONO_TYPE_SZARRAY:
1357 return mono_class_has_failure (type->data.klass);
1358 case MONO_TYPE_ARRAY:
1359 return mono_class_has_failure (type->data.array->eklass);
1360 case MONO_TYPE_GENERICINST:
1361 return mono_class_has_failure (mono_generic_class_get_class (type->data.generic_class));
1368 mono_error_set_for_class_failure (MonoError *oerror, const MonoClass *klass)
1370 g_assert (mono_class_has_failure (klass));
1371 MonoErrorBoxed *box = mono_class_get_exception_data ((MonoClass*)klass);
1372 mono_error_set_from_boxed (oerror, box);
1378 * Allocate memory for some data belonging to CLASS, either from its image's mempool,
1382 mono_class_alloc (MonoClass *klass, int size)
1384 MonoGenericClass *gklass = mono_class_try_get_generic_class (klass);
1386 return mono_image_set_alloc (gklass->owner, size);
1388 return mono_image_alloc (klass->image, size);
1392 mono_class_alloc0 (MonoClass *klass, int size)
1396 res = mono_class_alloc (klass, size);
1397 memset (res, 0, size);
1401 #define mono_class_new0(klass,struct_type, n_structs) \
1402 ((struct_type *) mono_class_alloc0 ((klass), ((gsize) sizeof (struct_type)) * ((gsize) (n_structs))))
1405 * mono_class_setup_basic_field_info:
1406 * @class: The class to initialize
1408 * Initializes the following fields in MonoClass:
1409 * * klass->fields (only field->parent and field->name)
1410 * * klass->field.count
1411 * * klass->first_field_idx
1412 * LOCKING: Acquires the loader lock
1415 mono_class_setup_basic_field_info (MonoClass *klass)
1417 MonoGenericClass *gklass;
1418 MonoClassField *field;
1419 MonoClassField *fields;
1427 gklass = mono_class_try_get_generic_class (klass);
1428 gtd = gklass ? mono_class_get_generic_type_definition (klass) : NULL;
1429 image = klass->image;
1432 if (gklass && image_is_dynamic (gklass->container_class->image) && !gklass->container_class->wastypebuilder) {
1434 * This happens when a generic instance of an unfinished generic typebuilder
1435 * is used as an element type for creating an array type. We can't initialize
1436 * the fields of this class using the fields of gklass, since gklass is not
1437 * finished yet, fields could be added to it later.
1443 mono_class_setup_basic_field_info (gtd);
1445 mono_loader_lock ();
1446 mono_class_set_field_count (klass, mono_class_get_field_count (gtd));
1447 mono_loader_unlock ();
1450 top = mono_class_get_field_count (klass);
1452 fields = (MonoClassField *)mono_class_alloc0 (klass, sizeof (MonoClassField) * top);
1455 * Fetch all the field information.
1457 int first_field_idx = mono_class_has_static_metadata (klass) ? mono_class_get_first_field_idx (klass) : 0;
1458 for (i = 0; i < top; i++) {
1459 field = &fields [i];
1460 field->parent = klass;
1463 field->name = mono_field_get_name (>d->fields [i]);
1465 int idx = first_field_idx + i;
1466 /* first_field_idx and idx points into the fieldptr table */
1467 guint32 name_idx = mono_metadata_decode_table_row_col (image, MONO_TABLE_FIELD, idx, MONO_FIELD_NAME);
1468 /* The name is needed for fieldrefs */
1469 field->name = mono_metadata_string_heap (image, name_idx);
1473 mono_memory_barrier ();
1475 mono_loader_lock ();
1477 klass->fields = fields;
1478 mono_loader_unlock ();
1482 * mono_class_set_failure_causedby_class:
1483 * @klass: the class that is failing
1484 * @caused_by: the class that caused the failure
1485 * @msg: Why @klass is failing.
1487 * If @caused_by has a failure, sets a TypeLoadException failure on
1488 * @klass with message "@msg, due to: {@caused_by message}".
1490 * Returns: TRUE if a failiure was set, or FALSE if @caused_by doesn't have a failure.
1493 mono_class_set_type_load_failure_causedby_class (MonoClass *klass, const MonoClass *caused_by, const gchar* msg)
1495 if (mono_class_has_failure (caused_by)) {
1496 MonoError cause_error;
1497 mono_error_init (&cause_error);
1498 mono_error_set_for_class_failure (&cause_error, caused_by);
1499 mono_class_set_type_load_failure (klass, "%s, due to: %s", msg, mono_error_get_message (&cause_error));
1500 mono_error_cleanup (&cause_error);
1509 * mono_class_setup_fields:
1510 * @klass: The class to initialize
1512 * Initializes klass->fields, computes class layout and sizes.
1513 * typebuilder_setup_fields () is the corresponding function for dynamic classes.
1514 * Sets the following fields in @klass:
1515 * - all the fields initialized by mono_class_init_sizes ()
1516 * - element_class/cast_class (for enums)
1517 * - field->type/offset for all fields
1520 * LOCKING: Acquires the loader lock.
1523 mono_class_setup_fields (MonoClass *klass)
1526 MonoImage *m = klass->image;
1528 guint32 layout = mono_class_get_flags (klass) & TYPE_ATTRIBUTE_LAYOUT_MASK;
1530 guint32 real_size = 0;
1531 guint32 packing_size = 0;
1533 gboolean explicit_size;
1534 MonoClassField *field;
1535 MonoGenericClass *gklass = mono_class_try_get_generic_class (klass);
1536 MonoClass *gtd = gklass ? mono_class_get_generic_type_definition (klass) : NULL;
1538 if (klass->fields_inited)
1541 if (gklass && image_is_dynamic (gklass->container_class->image) && !gklass->container_class->wastypebuilder) {
1543 * This happens when a generic instance of an unfinished generic typebuilder
1544 * is used as an element type for creating an array type. We can't initialize
1545 * the fields of this class using the fields of gklass, since gklass is not
1546 * finished yet, fields could be added to it later.
1551 mono_class_setup_basic_field_info (klass);
1552 top = mono_class_get_field_count (klass);
1555 mono_class_setup_fields (gtd);
1556 if (mono_class_set_type_load_failure_causedby_class (klass, gtd, "Generic type definition failed"))
1561 if (klass->parent) {
1562 /* For generic instances, klass->parent might not have been initialized */
1563 mono_class_init (klass->parent);
1564 mono_class_setup_fields (klass->parent);
1565 if (mono_class_set_type_load_failure_causedby_class (klass, klass->parent, "Could not set up parent class"))
1567 instance_size = klass->parent->instance_size;
1569 instance_size = sizeof (MonoObject);
1572 /* Get the real size */
1573 explicit_size = mono_metadata_packing_from_typedef (klass->image, klass->type_token, &packing_size, &real_size);
1575 instance_size += real_size;
1578 * This function can recursively call itself.
1579 * Prevent infinite recursion by using a list in TLS.
1581 GSList *init_list = (GSList *)mono_native_tls_get_value (setup_fields_tls_id);
1582 if (g_slist_find (init_list, klass))
1584 init_list = g_slist_prepend (init_list, klass);
1585 mono_native_tls_set_value (setup_fields_tls_id, init_list);
1588 * Fetch all the field information.
1590 int first_field_idx = mono_class_has_static_metadata (klass) ? mono_class_get_first_field_idx (klass) : 0;
1591 for (i = 0; i < top; i++) {
1592 int idx = first_field_idx + i;
1593 field = &klass->fields [i];
1596 mono_field_resolve_type (field, &error);
1597 if (!mono_error_ok (&error)) {
1598 /*mono_field_resolve_type already failed class*/
1599 mono_error_cleanup (&error);
1603 g_error ("could not resolve %s:%s\n", mono_type_get_full_name(klass), field->name);
1604 g_assert (field->type);
1607 if (mono_field_is_deleted (field))
1609 if (layout == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) {
1611 mono_metadata_field_info (m, idx, &uoffset, NULL, NULL);
1612 int offset = uoffset;
1614 if (offset == (guint32)-1 && !(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
1615 mono_class_set_type_load_failure (klass, "Missing field layout info for %s", field->name);
1618 if (offset < -1) { /*-1 is used to encode special static fields */
1619 mono_class_set_type_load_failure (klass, "Field '%s' has a negative offset %d", field->name, offset);
1622 if (mono_class_is_gtd (klass)) {
1623 mono_class_set_type_load_failure (klass, "Generic class cannot have explicit layout.");
1627 if (mono_type_has_exceptions (field->type)) {
1628 char *class_name = mono_type_get_full_name (klass);
1629 char *type_name = mono_type_full_name (field->type);
1631 mono_class_set_type_load_failure (klass, "");
1632 g_warning ("Invalid type %s for instance field %s:%s", type_name, class_name, field->name);
1633 g_free (class_name);
1637 /* The def_value of fields is compute lazily during vtable creation */
1640 if (!mono_class_has_failure (klass)) {
1641 mono_loader_lock ();
1642 mono_class_layout_fields (klass, instance_size, packing_size, FALSE);
1643 mono_loader_unlock ();
1646 init_list = g_slist_remove (init_list, klass);
1647 mono_native_tls_set_value (setup_fields_tls_id, init_list);
1651 init_sizes_with_info (MonoClass *klass, MonoCachedClassInfo *cached_info)
1654 klass->instance_size = cached_info->instance_size;
1655 klass->sizes.class_size = cached_info->class_size;
1656 klass->packing_size = cached_info->packing_size;
1657 klass->min_align = cached_info->min_align;
1658 klass->blittable = cached_info->blittable;
1659 klass->has_references = cached_info->has_references;
1660 klass->has_static_refs = cached_info->has_static_refs;
1661 klass->no_special_static_fields = cached_info->no_special_static_fields;
1664 if (!klass->size_inited)
1665 mono_class_setup_fields (klass);
1670 * mono_class_init_sizes:
1672 * Initializes the size related fields of @klass without loading all field data if possible.
1673 * Sets the following fields in @klass:
1675 * - sizes.class_size
1682 * Can fail the class.
1684 * LOCKING: Acquires the loader lock.
1687 mono_class_init_sizes (MonoClass *klass)
1689 MonoCachedClassInfo cached_info;
1690 gboolean has_cached_info;
1692 if (klass->size_inited)
1695 has_cached_info = mono_class_get_cached_class_info (klass, &cached_info);
1697 init_sizes_with_info (klass, has_cached_info ? &cached_info : NULL);
1701 * mono_type_get_basic_type_from_generic:
1704 * Returns a closed type corresponding to the possibly open type
1708 mono_type_get_basic_type_from_generic (MonoType *type)
1710 /* When we do generic sharing we let type variables stand for reference/primitive types. */
1711 if (!type->byref && (type->type == MONO_TYPE_VAR || type->type == MONO_TYPE_MVAR) &&
1712 (!type->data.generic_param->gshared_constraint || type->data.generic_param->gshared_constraint->type == MONO_TYPE_OBJECT))
1713 return &mono_defaults.object_class->byval_arg;
1718 class_has_references (MonoClass *klass)
1720 mono_class_init_sizes (klass);
1723 * has_references is not set if this is called recursively, but this is not a problem since this is only used
1724 * during field layout, and instance fields are initialized before static fields, and instance fields can't
1727 return klass->has_references;
1731 type_has_references (MonoClass *klass, MonoType *ftype)
1733 if (MONO_TYPE_IS_REFERENCE (ftype) || IS_GC_REFERENCE (klass, ftype) || ((MONO_TYPE_ISSTRUCT (ftype) && class_has_references (mono_class_from_mono_type (ftype)))))
1735 if (!ftype->byref && (ftype->type == MONO_TYPE_VAR || ftype->type == MONO_TYPE_MVAR)) {
1736 MonoGenericParam *gparam = ftype->data.generic_param;
1738 if (gparam->gshared_constraint)
1739 return class_has_references (mono_class_from_mono_type (gparam->gshared_constraint));
1745 * mono_class_layout_fields:
1747 * @base_instance_size: base instance size
1750 * This contains the common code for computing the layout of classes and sizes.
1751 * This should only be called from mono_class_setup_fields () and
1752 * typebuilder_setup_fields ().
1754 * LOCKING: Acquires the loader lock
1757 mono_class_layout_fields (MonoClass *klass, int base_instance_size, int packing_size, gboolean sre)
1760 const int top = mono_class_get_field_count (klass);
1761 guint32 layout = mono_class_get_flags (klass) & TYPE_ATTRIBUTE_LAYOUT_MASK;
1762 guint32 pass, passes, real_size;
1763 gboolean gc_aware_layout = FALSE;
1764 gboolean has_static_fields = FALSE;
1765 gboolean has_references = FALSE;
1766 gboolean has_static_refs = FALSE;
1767 MonoClassField *field;
1769 int instance_size = base_instance_size;
1770 int class_size, min_align;
1772 gboolean *fields_has_references;
1775 * We want to avoid doing complicated work inside locks, so we compute all the required
1776 * information and write it to @klass inside a lock.
1778 if (klass->fields_inited)
1781 if ((packing_size & 0xffffff00) != 0) {
1782 mono_class_set_type_load_failure (klass, "Could not load struct '%s' with packing size %d >= 256", klass->name, packing_size);
1786 if (klass->parent) {
1787 min_align = klass->parent->min_align;
1788 /* we use | since it may have been set already */
1789 has_references = klass->has_references | klass->parent->has_references;
1793 /* We can't really enable 16 bytes alignment until the GC supports it.
1794 The whole layout/instance size code must be reviewed because we do alignment calculation in terms of the
1795 boxed instance, which leads to unexplainable holes at the beginning of an object embedding a simd type.
1796 Bug #506144 is an example of this issue.
1798 if (klass->simd_type)
1803 * When we do generic sharing we need to have layout
1804 * information for open generic classes (either with a generic
1805 * context containing type variables or with a generic
1806 * container), so we don't return in that case anymore.
1809 if (klass->enumtype) {
1810 for (i = 0; i < top; i++) {
1811 field = &klass->fields [i];
1812 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
1813 klass->cast_class = klass->element_class = mono_class_from_mono_type (field->type);
1818 if (!mono_class_enum_basetype (klass)) {
1819 mono_class_set_type_load_failure (klass, "The enumeration's base type is invalid.");
1825 * Enable GC aware auto layout: in this mode, reference
1826 * fields are grouped together inside objects, increasing collector
1828 * Requires that all classes whose layout is known to native code be annotated
1829 * with [StructLayout (LayoutKind.Sequential)]
1830 * Value types have gc_aware_layout disabled by default, as per
1831 * what the default is for other runtimes.
1833 /* corlib is missing [StructLayout] directives in many places */
1834 if (layout == TYPE_ATTRIBUTE_AUTO_LAYOUT) {
1835 if (!klass->valuetype)
1836 gc_aware_layout = TRUE;
1839 /* Compute klass->blittable */
1842 blittable = klass->parent->blittable;
1843 if (layout == TYPE_ATTRIBUTE_AUTO_LAYOUT && !(mono_is_corlib_image (klass->image) && !strcmp (klass->name_space, "System") && !strcmp (klass->name, "ValueType")) && top)
1845 for (i = 0; i < top; i++) {
1846 field = &klass->fields [i];
1848 if (mono_field_is_deleted (field))
1850 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
1853 if (field->type->byref || MONO_TYPE_IS_REFERENCE (field->type)) {
1856 MonoClass *field_class = mono_class_from_mono_type (field->type);
1858 mono_class_setup_fields (field_class);
1859 if (mono_class_has_failure (field_class)) {
1860 MonoError field_error;
1861 mono_error_init (&field_error);
1862 mono_error_set_for_class_failure (&field_error, field_class);
1863 mono_class_set_type_load_failure (klass, "Could not set up field '%s' due to: %s", field->name, mono_error_get_message (&field_error));
1864 mono_error_cleanup (&field_error);
1868 if (!field_class || !field_class->blittable)
1872 if (klass->enumtype)
1873 blittable = klass->element_class->blittable;
1875 if (mono_class_has_failure (klass))
1877 if (klass == mono_defaults.string_class)
1880 /* Compute klass->has_references */
1882 * Process non-static fields first, since static fields might recursively
1883 * refer to the class itself.
1885 for (i = 0; i < top; i++) {
1888 field = &klass->fields [i];
1890 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
1891 ftype = mono_type_get_underlying_type (field->type);
1892 ftype = mono_type_get_basic_type_from_generic (ftype);
1893 if (type_has_references (klass, ftype))
1894 has_references = TRUE;
1899 * Compute field layout and total size (not considering static fields)
1901 field_offsets = g_new0 (int, top);
1902 fields_has_references = g_new0 (gboolean, top);
1903 int first_field_idx = mono_class_has_static_metadata (klass) ? mono_class_get_first_field_idx (klass) : 0;
1905 case TYPE_ATTRIBUTE_AUTO_LAYOUT:
1906 case TYPE_ATTRIBUTE_SEQUENTIAL_LAYOUT:
1907 if (gc_aware_layout)
1912 if (layout != TYPE_ATTRIBUTE_AUTO_LAYOUT)
1915 if (klass->parent) {
1916 mono_class_setup_fields (klass->parent);
1917 if (mono_class_set_type_load_failure_causedby_class (klass, klass->parent, "Cannot initialize parent class"))
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 fields_has_references [i] = type_has_references (klass, ftype);
1941 if (fields_has_references [i]) {
1950 if ((top == 1) && (instance_size == sizeof (MonoObject)) &&
1951 (strcmp (mono_field_get_name (field), "$PRIVATE$") == 0)) {
1952 /* This field is a hack inserted by MCS to empty structures */
1956 size = mono_type_size (field->type, &align);
1958 /* FIXME (LAMESPEC): should we also change the min alignment according to pack? */
1959 align = packing_size ? MIN (packing_size, align): align;
1960 /* if the field has managed references, we need to force-align it
1963 if (type_has_references (klass, ftype))
1964 align = MAX (align, sizeof (gpointer));
1966 min_align = MAX (align, min_align);
1967 field_offsets [i] = real_size;
1969 field_offsets [i] += align - 1;
1970 field_offsets [i] &= ~(align - 1);
1972 /*TypeBuilders produce all sort of weird things*/
1973 g_assert (image_is_dynamic (klass->image) || field_offsets [i] > 0);
1974 real_size = field_offsets [i] + size;
1977 /* Make SIMD types as big as a SIMD register since they can be stored into using simd stores */
1978 if (klass->simd_type)
1979 real_size = MAX (real_size, sizeof (MonoObject) + 16);
1980 instance_size = MAX (real_size, instance_size);
1982 if (instance_size & (min_align - 1)) {
1983 instance_size += min_align - 1;
1984 instance_size &= ~(min_align - 1);
1988 case TYPE_ATTRIBUTE_EXPLICIT_LAYOUT: {
1992 for (i = 0; i < top; i++) {
1997 field = &klass->fields [i];
2000 * There must be info about all the fields in a type if it
2001 * uses explicit layout.
2003 if (mono_field_is_deleted (field))
2005 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
2008 size = mono_type_size (field->type, &align);
2009 align = packing_size ? MIN (packing_size, align): align;
2010 min_align = MAX (align, min_align);
2013 /* Already set by typebuilder_setup_fields () */
2014 field_offsets [i] = field->offset + sizeof (MonoObject);
2016 int idx = first_field_idx + i;
2018 mono_metadata_field_info (klass->image, idx, &offset, NULL, NULL);
2019 field_offsets [i] = offset + sizeof (MonoObject);
2021 ftype = mono_type_get_underlying_type (field->type);
2022 ftype = mono_type_get_basic_type_from_generic (ftype);
2023 if (type_has_references (klass, ftype)) {
2024 if (field_offsets [i] % sizeof (gpointer)) {
2025 mono_class_set_type_load_failure (klass, "Reference typed field '%s' has explicit offset that is not pointer-size aligned.", field->name);
2032 real_size = MAX (real_size, size + field_offsets [i]);
2035 if (klass->has_references) {
2036 ref_bitmap = g_new0 (guint8, real_size / sizeof (gpointer));
2038 /* Check for overlapping reference and non-reference fields */
2039 for (i = 0; i < top; i++) {
2042 field = &klass->fields [i];
2044 if (mono_field_is_deleted (field))
2046 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
2048 ftype = mono_type_get_underlying_type (field->type);
2049 if (MONO_TYPE_IS_REFERENCE (ftype))
2050 ref_bitmap [field_offsets [i] / sizeof (gpointer)] = 1;
2052 for (i = 0; i < top; i++) {
2053 field = &klass->fields [i];
2055 if (mono_field_is_deleted (field))
2057 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
2060 // FIXME: Too much code does this
2062 if (!MONO_TYPE_IS_REFERENCE (field->type) && ref_bitmap [field_offsets [i] / sizeof (gpointer)]) {
2063 mono_class_set_type_load_failure (klass, "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_offsets [i]);
2067 g_free (ref_bitmap);
2070 instance_size = MAX (real_size, instance_size);
2071 if (instance_size & (min_align - 1)) {
2072 instance_size += min_align - 1;
2073 instance_size &= ~(min_align - 1);
2079 if (layout != TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) {
2081 * This leads to all kinds of problems with nested structs, so only
2082 * enable it when a MONO_DEBUG property is set.
2084 * For small structs, set min_align to at least the struct size to improve
2085 * performance, and since the JIT memset/memcpy code assumes this and generates
2086 * unaligned accesses otherwise. See #78990 for a testcase.
2088 if (mono_align_small_structs && top) {
2089 if (instance_size <= sizeof (MonoObject) + sizeof (gpointer))
2090 min_align = MAX (min_align, instance_size - sizeof (MonoObject));
2094 if (klass->byval_arg.type == MONO_TYPE_VAR || klass->byval_arg.type == MONO_TYPE_MVAR)
2095 instance_size = sizeof (MonoObject) + mono_type_stack_size_internal (&klass->byval_arg, NULL, TRUE);
2096 else if (klass->byval_arg.type == MONO_TYPE_PTR)
2097 instance_size = sizeof (MonoObject) + sizeof (gpointer);
2099 /* Publish the data */
2100 mono_loader_lock ();
2101 if (klass->instance_size && !klass->image->dynamic) {
2102 /* Might be already set using cached info */
2103 if (klass->instance_size != instance_size) {
2104 /* Emit info to help debugging */
2105 g_print ("%s\n", mono_class_full_name (klass));
2106 g_print ("%d %d %d %d\n", klass->instance_size, instance_size, klass->blittable, blittable);
2107 g_print ("%d %d %d %d\n", klass->has_references, has_references, klass->packing_size, packing_size);
2108 g_print ("%d %d\n", klass->min_align, min_align);
2109 for (i = 0; i < top; ++i) {
2110 field = &klass->fields [i];
2111 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC))
2112 printf (" %s %d %d %d\n", klass->fields [i].name, klass->fields [i].offset, field_offsets [i], fields_has_references [i]);
2115 g_assert (klass->instance_size == instance_size);
2117 klass->instance_size = instance_size;
2119 klass->blittable = blittable;
2120 klass->has_references = has_references;
2121 klass->packing_size = packing_size;
2122 klass->min_align = min_align;
2123 for (i = 0; i < top; ++i) {
2124 field = &klass->fields [i];
2125 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC))
2126 klass->fields [i].offset = field_offsets [i];
2129 mono_memory_barrier ();
2130 klass->size_inited = 1;
2131 mono_loader_unlock ();
2134 * Compute static field layout and size
2135 * Static fields can reference the class itself, so this has to be
2136 * done after instance_size etc. are initialized.
2139 for (i = 0; i < top; i++) {
2143 field = &klass->fields [i];
2145 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC) || field->type->attrs & FIELD_ATTRIBUTE_LITERAL)
2147 if (mono_field_is_deleted (field))
2150 if (mono_type_has_exceptions (field->type)) {
2151 mono_class_set_type_load_failure (klass, "Field '%s' has an invalid type.", field->name);
2155 has_static_fields = TRUE;
2157 size = mono_type_size (field->type, &align);
2158 field_offsets [i] = class_size;
2159 /*align is always non-zero here*/
2160 field_offsets [i] += align - 1;
2161 field_offsets [i] &= ~(align - 1);
2162 class_size = field_offsets [i] + size;
2165 if (has_static_fields && class_size == 0)
2166 /* Simplify code which depends on class_size != 0 if the class has static fields */
2169 /* Compute klass->has_static_refs */
2170 has_static_refs = FALSE;
2171 for (i = 0; i < top; i++) {
2174 field = &klass->fields [i];
2176 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC) {
2177 ftype = mono_type_get_underlying_type (field->type);
2178 ftype = mono_type_get_basic_type_from_generic (ftype);
2179 if (type_has_references (klass, ftype))
2180 has_static_refs = TRUE;
2184 /*valuetypes can't be neither bigger than 1Mb or empty. */
2185 if (klass->valuetype && (klass->instance_size <= 0 || klass->instance_size > (0x100000 + sizeof (MonoObject))))
2186 mono_class_set_type_load_failure (klass, "Value type instance size (%d) cannot be zero, negative, or bigger than 1Mb", klass->instance_size);
2188 /* Publish the data */
2189 mono_loader_lock ();
2191 klass->sizes.class_size = class_size;
2192 klass->has_static_refs = has_static_refs;
2193 for (i = 0; i < top; ++i) {
2194 field = &klass->fields [i];
2196 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
2197 field->offset = field_offsets [i];
2200 mono_memory_barrier ();
2201 klass->fields_inited = 1;
2202 mono_loader_unlock ();
2204 g_free (field_offsets);
2205 g_free (fields_has_references);
2209 create_array_method (MonoClass *klass, const char *name, MonoMethodSignature *sig)
2213 method = (MonoMethod *) mono_image_alloc0 (klass->image, sizeof (MonoMethodPInvoke));
2214 method->klass = klass;
2215 method->flags = METHOD_ATTRIBUTE_PUBLIC;
2216 method->iflags = METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL;
2217 method->signature = sig;
2218 method->name = name;
2221 if (name [0] == '.') {
2222 method->flags |= METHOD_ATTRIBUTE_RT_SPECIAL_NAME | METHOD_ATTRIBUTE_SPECIAL_NAME;
2224 method->iflags |= METHOD_IMPL_ATTRIBUTE_RUNTIME;
2230 * mono_class_setup_methods:
2233 * Initializes the 'methods' array in CLASS.
2234 * Calling this method should be avoided if possible since it allocates a lot
2235 * of long-living MonoMethod structures.
2236 * Methods belonging to an interface are assigned a sequential slot starting
2239 * On failure this function sets klass->has_failure and stores a MonoErrorBoxed with details
2242 mono_class_setup_methods (MonoClass *klass)
2245 MonoMethod **methods;
2250 if (mono_class_is_ginst (klass)) {
2252 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
2254 mono_class_init (gklass);
2255 if (!mono_class_has_failure (gklass))
2256 mono_class_setup_methods (gklass);
2257 if (mono_class_set_type_load_failure_causedby_class (klass, gklass, "Generic type definition failed to load"))
2260 /* The + 1 makes this always non-NULL to pass the check in mono_class_setup_methods () */
2261 count = mono_class_get_method_count (gklass);
2262 methods = (MonoMethod **)mono_class_alloc0 (klass, sizeof (MonoMethod*) * (count + 1));
2264 for (i = 0; i < count; i++) {
2265 methods [i] = mono_class_inflate_generic_method_full_checked (
2266 gklass->methods [i], klass, mono_class_get_context (klass), &error);
2267 if (!mono_error_ok (&error)) {
2268 char *method = mono_method_full_name (gklass->methods [i], TRUE);
2269 mono_class_set_type_load_failure (klass, "Could not inflate method %s due to %s", method, mono_error_get_message (&error));
2272 mono_error_cleanup (&error);
2276 } else if (klass->rank) {
2278 MonoMethod *amethod;
2279 MonoMethodSignature *sig;
2280 int count_generic = 0, first_generic = 0;
2282 gboolean jagged_ctor = FALSE;
2284 count = 3 + (klass->rank > 1? 2: 1);
2286 mono_class_setup_interfaces (klass, &error);
2287 g_assert (mono_error_ok (&error)); /*FIXME can this fail for array types?*/
2289 if (klass->rank == 1 && klass->element_class->rank) {
2294 if (klass->interface_count) {
2295 count_generic = generic_array_methods (klass);
2296 first_generic = count;
2297 count += klass->interface_count * count_generic;
2300 methods = (MonoMethod **)mono_class_alloc0 (klass, sizeof (MonoMethod*) * count);
2302 sig = mono_metadata_signature_alloc (klass->image, klass->rank);
2303 sig->ret = &mono_defaults.void_class->byval_arg;
2304 sig->pinvoke = TRUE;
2305 sig->hasthis = TRUE;
2306 for (i = 0; i < klass->rank; ++i)
2307 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2309 amethod = create_array_method (klass, ".ctor", sig);
2310 methods [method_num++] = amethod;
2311 if (klass->rank > 1) {
2312 sig = mono_metadata_signature_alloc (klass->image, klass->rank * 2);
2313 sig->ret = &mono_defaults.void_class->byval_arg;
2314 sig->pinvoke = TRUE;
2315 sig->hasthis = TRUE;
2316 for (i = 0; i < klass->rank * 2; ++i)
2317 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2319 amethod = create_array_method (klass, ".ctor", sig);
2320 methods [method_num++] = amethod;
2324 /* Jagged arrays have an extra ctor in .net which creates an array of arrays */
2325 sig = mono_metadata_signature_alloc (klass->image, klass->rank + 1);
2326 sig->ret = &mono_defaults.void_class->byval_arg;
2327 sig->pinvoke = TRUE;
2328 sig->hasthis = TRUE;
2329 for (i = 0; i < klass->rank + 1; ++i)
2330 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2331 amethod = create_array_method (klass, ".ctor", sig);
2332 methods [method_num++] = amethod;
2335 /* element Get (idx11, [idx2, ...]) */
2336 sig = mono_metadata_signature_alloc (klass->image, klass->rank);
2337 sig->ret = &klass->element_class->byval_arg;
2338 sig->pinvoke = TRUE;
2339 sig->hasthis = TRUE;
2340 for (i = 0; i < klass->rank; ++i)
2341 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2342 amethod = create_array_method (klass, "Get", sig);
2343 methods [method_num++] = amethod;
2344 /* element& Address (idx11, [idx2, ...]) */
2345 sig = mono_metadata_signature_alloc (klass->image, klass->rank);
2346 sig->ret = &klass->element_class->this_arg;
2347 sig->pinvoke = TRUE;
2348 sig->hasthis = TRUE;
2349 for (i = 0; i < klass->rank; ++i)
2350 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2351 amethod = create_array_method (klass, "Address", sig);
2352 methods [method_num++] = amethod;
2353 /* void Set (idx11, [idx2, ...], element) */
2354 sig = mono_metadata_signature_alloc (klass->image, klass->rank + 1);
2355 sig->ret = &mono_defaults.void_class->byval_arg;
2356 sig->pinvoke = TRUE;
2357 sig->hasthis = TRUE;
2358 for (i = 0; i < klass->rank; ++i)
2359 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2360 sig->params [i] = &klass->element_class->byval_arg;
2361 amethod = create_array_method (klass, "Set", sig);
2362 methods [method_num++] = amethod;
2364 for (i = 0; i < klass->interface_count; i++)
2365 setup_generic_array_ifaces (klass, klass->interfaces [i], methods, first_generic + i * count_generic);
2366 } else if (mono_class_has_static_metadata (klass)) {
2368 int first_idx = mono_class_get_first_method_idx (klass);
2370 count = mono_class_get_method_count (klass);
2371 methods = (MonoMethod **)mono_class_alloc (klass, sizeof (MonoMethod*) * count);
2372 for (i = 0; i < count; ++i) {
2373 int idx = mono_metadata_translate_token_index (klass->image, MONO_TABLE_METHOD, first_idx + i + 1);
2374 methods [i] = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | idx, klass, NULL, &error);
2376 mono_class_set_type_load_failure (klass, "Could not load method %d due to %s", i, mono_error_get_message (&error));
2377 mono_error_cleanup (&error);
2381 methods = (MonoMethod **)mono_class_alloc (klass, sizeof (MonoMethod*) * 1);
2385 if (MONO_CLASS_IS_INTERFACE (klass)) {
2387 /*Only assign slots to virtual methods as interfaces are allowed to have static methods.*/
2388 for (i = 0; i < count; ++i) {
2389 if (methods [i]->flags & METHOD_ATTRIBUTE_VIRTUAL)
2390 methods [i]->slot = slot++;
2394 mono_image_lock (klass->image);
2396 if (!klass->methods) {
2397 mono_class_set_method_count (klass, count);
2399 /* Needed because of the double-checking locking pattern */
2400 mono_memory_barrier ();
2402 klass->methods = methods;
2405 mono_image_unlock (klass->image);
2409 * mono_class_get_method_by_index:
2411 * Returns klass->methods [index], initializing klass->methods if neccesary.
2413 * LOCKING: Acquires the loader lock.
2416 mono_class_get_method_by_index (MonoClass *klass, int index)
2420 MonoGenericClass *gklass = mono_class_try_get_generic_class (klass);
2421 /* Avoid calling setup_methods () if possible */
2422 if (gklass && !klass->methods) {
2425 m = mono_class_inflate_generic_method_full_checked (
2426 gklass->container_class->methods [index], klass, mono_class_get_context (klass), &error);
2427 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
2429 * If setup_methods () is called later for this class, no duplicates are created,
2430 * since inflate_generic_method guarantees that only one instance of a method
2431 * is created for each context.
2434 mono_class_setup_methods (klass);
2435 g_assert (m == klass->methods [index]);
2439 mono_class_setup_methods (klass);
2440 if (mono_class_has_failure (klass)) /*FIXME do proper error handling*/
2442 g_assert (index >= 0 && index < mono_class_get_method_count (klass));
2443 return klass->methods [index];
2448 * mono_class_get_inflated_method:
2450 * Given an inflated class CLASS and a method METHOD which should be a method of
2451 * CLASS's generic definition, return the inflated method corresponding to METHOD.
2454 mono_class_get_inflated_method (MonoClass *klass, MonoMethod *method)
2456 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
2459 g_assert (method->klass == gklass);
2461 mono_class_setup_methods (gklass);
2462 g_assert (!mono_class_has_failure (gklass)); /*FIXME do proper error handling*/
2464 mcount = mono_class_get_method_count (gklass);
2465 for (i = 0; i < mcount; ++i) {
2466 if (gklass->methods [i] == method) {
2467 if (klass->methods) {
2468 return klass->methods [i];
2471 MonoMethod *result = mono_class_inflate_generic_method_full_checked (gklass->methods [i], klass, mono_class_get_context (klass), &error);
2472 g_assert (mono_error_ok (&error)); /* FIXME don't swallow this error */
2482 * mono_class_get_vtable_entry:
2484 * Returns klass->vtable [offset], computing it if neccesary. Returns NULL on failure.
2485 * LOCKING: Acquires the loader lock.
2488 mono_class_get_vtable_entry (MonoClass *klass, int offset)
2492 if (klass->rank == 1) {
2494 * szarrays do not overwrite any methods of Array, so we can avoid
2495 * initializing their vtables in some cases.
2497 mono_class_setup_vtable (klass->parent);
2498 if (offset < klass->parent->vtable_size)
2499 return klass->parent->vtable [offset];
2502 if (mono_class_is_ginst (klass)) {
2504 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
2505 mono_class_setup_vtable (gklass);
2506 m = gklass->vtable [offset];
2508 m = mono_class_inflate_generic_method_full_checked (m, klass, mono_class_get_context (klass), &error);
2509 g_assert (mono_error_ok (&error)); /* FIXME don't swallow this error */
2511 mono_class_setup_vtable (klass);
2512 if (mono_class_has_failure (klass))
2514 m = klass->vtable [offset];
2521 * mono_class_get_vtable_size:
2523 * Return the vtable size for KLASS.
2526 mono_class_get_vtable_size (MonoClass *klass)
2528 mono_class_setup_vtable (klass);
2530 return klass->vtable_size;
2534 * mono_class_setup_properties:
2536 * Initialize klass->ext.property and klass->ext.properties.
2538 * This method can fail the class.
2541 mono_class_setup_properties (MonoClass *klass)
2543 guint startm, endm, i, j;
2544 guint32 cols [MONO_PROPERTY_SIZE];
2545 MonoTableInfo *msemt = &klass->image->tables [MONO_TABLE_METHODSEMANTICS];
2546 MonoProperty *properties;
2549 MonoClassPropertyInfo *info;
2551 info = mono_class_get_property_info (klass);
2555 if (mono_class_is_ginst (klass)) {
2556 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
2558 mono_class_init (gklass);
2559 mono_class_setup_properties (gklass);
2560 if (mono_class_set_type_load_failure_causedby_class (klass, gklass, "Generic type definition failed to load"))
2563 MonoClassPropertyInfo *ginfo = mono_class_get_property_info (gklass);
2564 properties = mono_class_new0 (klass, MonoProperty, ginfo->count + 1);
2566 for (i = 0; i < ginfo->count; i++) {
2568 MonoProperty *prop = &properties [i];
2570 *prop = ginfo->properties [i];
2573 prop->get = mono_class_inflate_generic_method_full_checked (
2574 prop->get, klass, mono_class_get_context (klass), &error);
2576 prop->set = mono_class_inflate_generic_method_full_checked (
2577 prop->set, klass, mono_class_get_context (klass), &error);
2579 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
2580 prop->parent = klass;
2583 first = ginfo->first;
2584 count = ginfo->count;
2586 first = mono_metadata_properties_from_typedef (klass->image, mono_metadata_token_index (klass->type_token) - 1, &last);
2587 count = last - first;
2590 mono_class_setup_methods (klass);
2591 if (mono_class_has_failure (klass))
2595 properties = (MonoProperty *)mono_class_alloc0 (klass, sizeof (MonoProperty) * count);
2596 for (i = first; i < last; ++i) {
2597 mono_metadata_decode_table_row (klass->image, MONO_TABLE_PROPERTY, i, cols, MONO_PROPERTY_SIZE);
2598 properties [i - first].parent = klass;
2599 properties [i - first].attrs = cols [MONO_PROPERTY_FLAGS];
2600 properties [i - first].name = mono_metadata_string_heap (klass->image, cols [MONO_PROPERTY_NAME]);
2602 startm = mono_metadata_methods_from_property (klass->image, i, &endm);
2603 int first_idx = mono_class_get_first_method_idx (klass);
2604 for (j = startm; j < endm; ++j) {
2607 mono_metadata_decode_row (msemt, j, cols, MONO_METHOD_SEMA_SIZE);
2609 if (klass->image->uncompressed_metadata) {
2611 /* It seems like the MONO_METHOD_SEMA_METHOD column needs no remapping */
2612 method = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | cols [MONO_METHOD_SEMA_METHOD], klass, NULL, &error);
2613 mono_error_cleanup (&error); /* FIXME don't swallow this error */
2615 method = klass->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - first_idx];
2618 switch (cols [MONO_METHOD_SEMA_SEMANTICS]) {
2619 case METHOD_SEMANTIC_SETTER:
2620 properties [i - first].set = method;
2622 case METHOD_SEMANTIC_GETTER:
2623 properties [i - first].get = method;
2632 info = mono_class_alloc0 (klass, sizeof (MonoClassPropertyInfo));
2633 info->first = first;
2634 info->count = count;
2635 info->properties = properties;
2636 mono_memory_barrier ();
2638 /* This might leak 'info' which was allocated from the image mempool */
2639 mono_class_set_property_info (klass, info);
2643 inflate_method_listz (MonoMethod **methods, MonoClass *klass, MonoGenericContext *context)
2645 MonoMethod **om, **retval;
2648 for (om = methods, count = 0; *om; ++om, ++count)
2651 retval = g_new0 (MonoMethod*, count + 1);
2653 for (om = methods, count = 0; *om; ++om, ++count) {
2655 retval [count] = mono_class_inflate_generic_method_full_checked (*om, klass, context, &error);
2656 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
2662 /*This method can fail the class.*/
2664 mono_class_setup_events (MonoClass *klass)
2667 guint startm, endm, i, j;
2668 guint32 cols [MONO_EVENT_SIZE];
2669 MonoTableInfo *msemt = &klass->image->tables [MONO_TABLE_METHODSEMANTICS];
2673 MonoClassEventInfo *info = mono_class_get_event_info (klass);
2677 if (mono_class_is_ginst (klass)) {
2678 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
2679 MonoGenericContext *context = NULL;
2681 mono_class_setup_events (gklass);
2682 if (mono_class_set_type_load_failure_causedby_class (klass, gklass, "Generic type definition failed to load"))
2685 MonoClassEventInfo *ginfo = mono_class_get_event_info (gklass);
2686 first = ginfo->first;
2687 count = ginfo->count;
2689 events = mono_class_new0 (klass, MonoEvent, count);
2692 context = mono_class_get_context (klass);
2694 for (i = 0; i < count; i++) {
2696 MonoEvent *event = &events [i];
2697 MonoEvent *gevent = &ginfo->events [i];
2699 mono_error_init (&error); //since we do conditional calls, we must ensure the default value is ok
2701 event->parent = klass;
2702 event->name = gevent->name;
2703 event->add = gevent->add ? mono_class_inflate_generic_method_full_checked (gevent->add, klass, context, &error) : NULL;
2704 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
2705 event->remove = gevent->remove ? mono_class_inflate_generic_method_full_checked (gevent->remove, klass, context, &error) : NULL;
2706 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
2707 event->raise = gevent->raise ? mono_class_inflate_generic_method_full_checked (gevent->raise, klass, context, &error) : NULL;
2708 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
2710 #ifndef MONO_SMALL_CONFIG
2711 event->other = gevent->other ? inflate_method_listz (gevent->other, klass, context) : NULL;
2713 event->attrs = gevent->attrs;
2716 first = mono_metadata_events_from_typedef (klass->image, mono_metadata_token_index (klass->type_token) - 1, &last);
2717 count = last - first;
2720 mono_class_setup_methods (klass);
2721 if (mono_class_has_failure (klass)) {
2726 events = (MonoEvent *)mono_class_alloc0 (klass, sizeof (MonoEvent) * count);
2727 for (i = first; i < last; ++i) {
2728 MonoEvent *event = &events [i - first];
2730 mono_metadata_decode_table_row (klass->image, MONO_TABLE_EVENT, i, cols, MONO_EVENT_SIZE);
2731 event->parent = klass;
2732 event->attrs = cols [MONO_EVENT_FLAGS];
2733 event->name = mono_metadata_string_heap (klass->image, cols [MONO_EVENT_NAME]);
2735 startm = mono_metadata_methods_from_event (klass->image, i, &endm);
2736 int first_idx = mono_class_get_first_method_idx (klass);
2737 for (j = startm; j < endm; ++j) {
2740 mono_metadata_decode_row (msemt, j, cols, MONO_METHOD_SEMA_SIZE);
2742 if (klass->image->uncompressed_metadata) {
2744 /* It seems like the MONO_METHOD_SEMA_METHOD column needs no remapping */
2745 method = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | cols [MONO_METHOD_SEMA_METHOD], klass, NULL, &error);
2746 mono_error_cleanup (&error); /* FIXME don't swallow this error */
2748 method = klass->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - first_idx];
2751 switch (cols [MONO_METHOD_SEMA_SEMANTICS]) {
2752 case METHOD_SEMANTIC_ADD_ON:
2753 event->add = method;
2755 case METHOD_SEMANTIC_REMOVE_ON:
2756 event->remove = method;
2758 case METHOD_SEMANTIC_FIRE:
2759 event->raise = method;
2761 case METHOD_SEMANTIC_OTHER: {
2762 #ifndef MONO_SMALL_CONFIG
2765 if (event->other == NULL) {
2766 event->other = g_new0 (MonoMethod*, 2);
2768 while (event->other [n])
2770 event->other = (MonoMethod **)g_realloc (event->other, (n + 2) * sizeof (MonoMethod*));
2772 event->other [n] = method;
2773 /* NULL terminated */
2774 event->other [n + 1] = NULL;
2785 info = mono_class_alloc0 (klass, sizeof (MonoClassEventInfo));
2786 info->events = events;
2787 info->first = first;
2788 info->count = count;
2790 mono_memory_barrier ();
2792 mono_class_set_event_info (klass, info);
2796 * Global pool of interface IDs, represented as a bitset.
2797 * LOCKING: Protected by the classes lock.
2799 static MonoBitSet *global_interface_bitset = NULL;
2802 * mono_unload_interface_ids:
2803 * @bitset: bit set of interface IDs
2805 * When an image is unloaded, the interface IDs associated with
2806 * the image are put back in the global pool of IDs so the numbers
2810 mono_unload_interface_ids (MonoBitSet *bitset)
2813 mono_bitset_sub (global_interface_bitset, bitset);
2818 mono_unload_interface_id (MonoClass *klass)
2820 if (global_interface_bitset && klass->interface_id) {
2822 mono_bitset_clear (global_interface_bitset, klass->interface_id);
2828 * mono_get_unique_iid:
2831 * Assign a unique integer ID to the interface represented by @class.
2832 * The ID will positive and as small as possible.
2833 * LOCKING: Acquires the classes lock.
2834 * Returns: The new ID.
2837 mono_get_unique_iid (MonoClass *klass)
2841 g_assert (MONO_CLASS_IS_INTERFACE (klass));
2845 if (!global_interface_bitset) {
2846 global_interface_bitset = mono_bitset_new (128, 0);
2849 iid = mono_bitset_find_first_unset (global_interface_bitset, -1);
2851 int old_size = mono_bitset_size (global_interface_bitset);
2852 MonoBitSet *new_set = mono_bitset_clone (global_interface_bitset, old_size * 2);
2853 mono_bitset_free (global_interface_bitset);
2854 global_interface_bitset = new_set;
2857 mono_bitset_set (global_interface_bitset, iid);
2858 /* set the bit also in the per-image set */
2859 if (!mono_class_is_ginst (klass)) {
2860 if (klass->image->interface_bitset) {
2861 if (iid >= mono_bitset_size (klass->image->interface_bitset)) {
2862 MonoBitSet *new_set = mono_bitset_clone (klass->image->interface_bitset, iid + 1);
2863 mono_bitset_free (klass->image->interface_bitset);
2864 klass->image->interface_bitset = new_set;
2867 klass->image->interface_bitset = mono_bitset_new (iid + 1, 0);
2869 mono_bitset_set (klass->image->interface_bitset, iid);
2874 #ifndef MONO_SMALL_CONFIG
2875 if (mono_print_vtable) {
2877 char *type_name = mono_type_full_name (&klass->byval_arg);
2878 MonoGenericClass *gklass = mono_class_try_get_generic_class (klass);
2879 if (gklass && !gklass->context.class_inst->is_open) {
2880 generic_id = gklass->context.class_inst->id;
2881 g_assert (generic_id != 0);
2885 printf ("Interface: assigned id %d to %s|%s|%d\n", iid, klass->image->name, type_name, generic_id);
2890 /* I've confirmed iids safe past 16 bits, however bitset code uses a signed int while testing.
2891 * Once this changes, it should be safe for us to allow 2^32-1 interfaces, until then 2^31-2 is the max. */
2892 g_assert (iid < INT_MAX);
2897 collect_implemented_interfaces_aux (MonoClass *klass, GPtrArray **res, GHashTable **ifaces, MonoError *error)
2902 mono_class_setup_interfaces (klass, error);
2903 return_if_nok (error);
2905 for (i = 0; i < klass->interface_count; i++) {
2906 ic = klass->interfaces [i];
2909 *res = g_ptr_array_new ();
2910 if (*ifaces == NULL)
2911 *ifaces = g_hash_table_new (NULL, NULL);
2912 if (g_hash_table_lookup (*ifaces, ic))
2914 g_ptr_array_add (*res, ic);
2915 g_hash_table_insert (*ifaces, ic, ic);
2916 mono_class_init (ic);
2917 if (mono_class_has_failure (ic)) {
2918 mono_error_set_type_load_class (error, ic, "Error Loading class");
2922 collect_implemented_interfaces_aux (ic, res, ifaces, error);
2923 return_if_nok (error);
2928 mono_class_get_implemented_interfaces (MonoClass *klass, MonoError *error)
2930 GPtrArray *res = NULL;
2931 GHashTable *ifaces = NULL;
2933 collect_implemented_interfaces_aux (klass, &res, &ifaces, error);
2935 g_hash_table_destroy (ifaces);
2936 if (!mono_error_ok (error)) {
2938 g_ptr_array_free (res, TRUE);
2945 compare_interface_ids (const void *p_key, const void *p_element)
2947 const MonoClass *key = (const MonoClass *)p_key;
2948 const MonoClass *element = *(const MonoClass **)p_element;
2950 return (key->interface_id - element->interface_id);
2953 /*FIXME verify all callers if they should switch to mono_class_interface_offset_with_variance*/
2955 mono_class_interface_offset (MonoClass *klass, MonoClass *itf)
2957 MonoClass **result = (MonoClass **)mono_binary_search (
2959 klass->interfaces_packed,
2960 klass->interface_offsets_count,
2961 sizeof (MonoClass *),
2962 compare_interface_ids);
2964 return klass->interface_offsets_packed [result - (klass->interfaces_packed)];
2971 * mono_class_interface_offset_with_variance:
2973 * Return the interface offset of @itf in @klass. Sets @non_exact_match to TRUE if the match required variance check
2974 * If @itf is an interface with generic variant arguments, try to find the compatible one.
2976 * Note that this function is responsible for resolving ambiguities. Right now we use whatever ordering interfaces_packed gives us.
2978 * FIXME figure out MS disambiguation rules and fix this function.
2981 mono_class_interface_offset_with_variance (MonoClass *klass, MonoClass *itf, gboolean *non_exact_match)
2983 int i = mono_class_interface_offset (klass, itf);
2984 *non_exact_match = FALSE;
2988 if (itf->is_array_special_interface && klass->rank < 2) {
2989 MonoClass *gtd = mono_class_get_generic_type_definition (itf);
2991 for (i = 0; i < klass->interface_offsets_count; i++) {
2992 // printf ("\t%s\n", mono_type_get_full_name (klass->interfaces_packed [i]));
2993 if (mono_class_get_generic_type_definition (klass->interfaces_packed [i]) == gtd) {
2994 *non_exact_match = TRUE;
2995 return klass->interface_offsets_packed [i];
3000 if (!mono_class_has_variant_generic_params (itf))
3003 for (i = 0; i < klass->interface_offsets_count; i++) {
3004 if (mono_class_is_variant_compatible (itf, klass->interfaces_packed [i], FALSE)) {
3005 *non_exact_match = TRUE;
3006 return klass->interface_offsets_packed [i];
3014 print_implemented_interfaces (MonoClass *klass)
3018 GPtrArray *ifaces = NULL;
3020 int ancestor_level = 0;
3022 name = mono_type_get_full_name (klass);
3023 printf ("Packed interface table for class %s has size %d\n", name, klass->interface_offsets_count);
3026 for (i = 0; i < klass->interface_offsets_count; i++)
3027 printf (" [%03d][UUID %03d][SLOT %03d][SIZE %03d] interface %s.%s\n", i,
3028 klass->interfaces_packed [i]->interface_id,
3029 klass->interface_offsets_packed [i],
3030 mono_class_get_method_count (klass->interfaces_packed [i]),
3031 klass->interfaces_packed [i]->name_space,
3032 klass->interfaces_packed [i]->name );
3033 printf ("Interface flags: ");
3034 for (i = 0; i <= klass->max_interface_id; i++)
3035 if (MONO_CLASS_IMPLEMENTS_INTERFACE (klass, i))
3036 printf ("(%d,T)", i);
3038 printf ("(%d,F)", i);
3040 printf ("Dump interface flags:");
3041 #ifdef COMPRESSED_INTERFACE_BITMAP
3043 const uint8_t* p = klass->interface_bitmap;
3044 i = klass->max_interface_id;
3046 printf (" %d x 00 %02X", p [0], p [1]);
3052 for (i = 0; i < ((((klass->max_interface_id + 1) >> 3)) + (((klass->max_interface_id + 1) & 7)? 1 :0)); i++)
3053 printf (" %02X", klass->interface_bitmap [i]);
3056 while (klass != NULL) {
3057 printf ("[LEVEL %d] Implemented interfaces by class %s:\n", ancestor_level, klass->name);
3058 ifaces = mono_class_get_implemented_interfaces (klass, &error);
3059 if (!mono_error_ok (&error)) {
3060 printf (" Type failed due to %s\n", mono_error_get_message (&error));
3061 mono_error_cleanup (&error);
3062 } else if (ifaces) {
3063 for (i = 0; i < ifaces->len; i++) {
3064 MonoClass *ic = (MonoClass *)g_ptr_array_index (ifaces, i);
3065 printf (" [UIID %d] interface %s\n", ic->interface_id, ic->name);
3066 printf (" [%03d][UUID %03d][SLOT %03d][SIZE %03d] interface %s.%s\n", i,
3068 mono_class_interface_offset (klass, ic),
3069 mono_class_get_method_count (ic),
3073 g_ptr_array_free (ifaces, TRUE);
3076 klass = klass->parent;
3081 inflate_class_one_arg (MonoClass *gtype, MonoClass *arg0)
3084 args [0] = &arg0->byval_arg;
3086 return mono_class_bind_generic_parameters (gtype, 1, args, FALSE);
3090 array_class_get_if_rank (MonoClass *klass, guint rank)
3092 return rank ? mono_array_class_get (klass, rank) : klass;
3096 fill_valuetype_array_derived_types (MonoClass **valuetype_types, MonoClass *eclass, int rank)
3098 valuetype_types [0] = eclass;
3099 if (eclass == mono_defaults.int16_class)
3100 valuetype_types [1] = mono_defaults.uint16_class;
3101 else if (eclass == mono_defaults.uint16_class)
3102 valuetype_types [1] = mono_defaults.int16_class;
3103 else if (eclass == mono_defaults.int32_class)
3104 valuetype_types [1] = mono_defaults.uint32_class;
3105 else if (eclass == mono_defaults.uint32_class)
3106 valuetype_types [1] = mono_defaults.int32_class;
3107 else if (eclass == mono_defaults.int64_class)
3108 valuetype_types [1] = mono_defaults.uint64_class;
3109 else if (eclass == mono_defaults.uint64_class)
3110 valuetype_types [1] = mono_defaults.int64_class;
3111 else if (eclass == mono_defaults.byte_class)
3112 valuetype_types [1] = mono_defaults.sbyte_class;
3113 else if (eclass == mono_defaults.sbyte_class)
3114 valuetype_types [1] = mono_defaults.byte_class;
3115 else if (eclass->enumtype && mono_class_enum_basetype (eclass))
3116 valuetype_types [1] = mono_class_from_mono_type (mono_class_enum_basetype (eclass));
3119 static GENERATE_GET_CLASS_WITH_CACHE (generic_icollection, System.Collections.Generic, ICollection`1)
3120 static GENERATE_GET_CLASS_WITH_CACHE (generic_ienumerable, System.Collections.Generic, IEnumerable`1)
3121 static GENERATE_GET_CLASS_WITH_CACHE (generic_ienumerator, System.Collections.Generic, IEnumerator`1)
3122 static GENERATE_GET_CLASS_WITH_CACHE (generic_ireadonlylist, System.Collections.Generic, IReadOnlyList`1)
3123 static GENERATE_GET_CLASS_WITH_CACHE (generic_ireadonlycollection, System.Collections.Generic, IReadOnlyCollection`1)
3126 find_array_interface (MonoClass *klass, const char *name)
3129 for (i = 0; i < klass->interface_count; ++i) {
3130 if (strcmp (klass->interfaces [i]->name, name) == 0)
3137 * Return the number of virtual methods.
3138 * Even for interfaces we can't simply return the number of methods as all CLR types are allowed to have static methods.
3139 * Return -1 on failure.
3140 * FIXME It would be nice if this information could be cached somewhere.
3143 count_virtual_methods (MonoClass *klass)
3145 int i, mcount, vcount = 0;
3147 klass = mono_class_get_generic_type_definition (klass); /*We can find this information by looking at the GTD*/
3149 if (klass->methods || !MONO_CLASS_HAS_STATIC_METADATA (klass)) {
3150 mono_class_setup_methods (klass);
3151 if (mono_class_has_failure (klass))
3154 mcount = mono_class_get_method_count (klass);
3155 for (i = 0; i < mcount; ++i) {
3156 flags = klass->methods [i]->flags;
3157 if (flags & METHOD_ATTRIBUTE_VIRTUAL)
3161 int first_idx = mono_class_get_first_method_idx (klass);
3162 mcount = mono_class_get_method_count (klass);
3163 for (i = 0; i < mcount; ++i) {
3164 flags = mono_metadata_decode_table_row_col (klass->image, MONO_TABLE_METHOD, first_idx + i, MONO_METHOD_FLAGS);
3166 if (flags & METHOD_ATTRIBUTE_VIRTUAL)
3174 find_interface (int num_ifaces, MonoClass **interfaces_full, MonoClass *ic)
3182 m = (l + num_ifaces) / 2;
3183 if (interfaces_full [m] == ic)
3185 if (l == num_ifaces)
3187 if (!interfaces_full [m] || interfaces_full [m]->interface_id > ic->interface_id) {
3196 find_interface_offset (int num_ifaces, MonoClass **interfaces_full, int *interface_offsets_full, MonoClass *ic)
3198 int i = find_interface (num_ifaces, interfaces_full, ic);
3200 return interface_offsets_full [i];
3205 set_interface_and_offset (int num_ifaces, MonoClass **interfaces_full, int *interface_offsets_full, MonoClass *ic, int offset, mono_bool force_set)
3207 int i = find_interface (num_ifaces, interfaces_full, ic);
3211 interface_offsets_full [i] = offset;
3214 for (i = 0; i < num_ifaces; ++i) {
3215 if (interfaces_full [i]) {
3217 if (interfaces_full [i]->interface_id < ic->interface_id)
3220 while (end < num_ifaces && interfaces_full [end]) end++;
3221 memmove (interfaces_full + i + 1, interfaces_full + i, sizeof (MonoClass*) * (end - i));
3222 memmove (interface_offsets_full + i + 1, interface_offsets_full + i, sizeof (int) * (end - i));
3224 interfaces_full [i] = ic;
3225 interface_offsets_full [i] = offset;
3231 #ifdef COMPRESSED_INTERFACE_BITMAP
3234 * Compressed interface bitmap design.
3236 * Interface bitmaps take a large amount of memory, because their size is
3237 * linear with the maximum interface id assigned in the process (each interface
3238 * is assigned a unique id as it is loaded). The number of interface classes
3239 * is high because of the many implicit interfaces implemented by arrays (we'll
3240 * need to lazy-load them in the future).
3241 * Most classes implement a very small number of interfaces, so the bitmap is
3242 * sparse. This bitmap needs to be checked by interface casts, so access to the
3243 * needed bit must be fast and doable with few jit instructions.
3245 * The current compression format is as follows:
3246 * *) it is a sequence of one or more two-byte elements
3247 * *) the first byte in the element is the count of empty bitmap bytes
3248 * at the current bitmap position
3249 * *) the second byte in the element is an actual bitmap byte at the current
3252 * As an example, the following compressed bitmap bytes:
3253 * 0x07 0x01 0x00 0x7
3254 * correspond to the following bitmap:
3255 * 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x01 0x07
3257 * Each two-byte element can represent up to 2048 bitmap bits, but as few as a single
3258 * bitmap byte for non-sparse sequences. In practice the interface bitmaps created
3259 * during a gmcs bootstrap are reduced to less tha 5% of the original size.
3263 * mono_compress_bitmap:
3264 * @dest: destination buffer
3265 * @bitmap: bitmap buffer
3266 * @size: size of @bitmap in bytes
3268 * This is a mono internal function.
3269 * The @bitmap data is compressed into a format that is small but
3270 * still searchable in few instructions by the JIT and runtime.
3271 * The compressed data is stored in the buffer pointed to by the
3272 * @dest array. Passing a #NULL value for @dest allows to just compute
3273 * the size of the buffer.
3274 * This compression algorithm assumes the bits set in the bitmap are
3275 * few and far between, like in interface bitmaps.
3276 * Returns: The size of the compressed bitmap in bytes.
3279 mono_compress_bitmap (uint8_t *dest, const uint8_t *bitmap, int size)
3283 const uint8_t *end = bitmap + size;
3284 while (bitmap < end) {
3285 if (*bitmap || numz == 255) {
3309 * mono_class_interface_match:
3310 * @bitmap: a compressed bitmap buffer
3311 * @id: the index to check in the bitmap
3313 * This is a mono internal function.
3314 * Checks if a bit is set in a compressed interface bitmap. @id must
3315 * be already checked for being smaller than the maximum id encoded in the
3318 * Returns: A non-zero value if bit @id is set in the bitmap @bitmap,
3322 mono_class_interface_match (const uint8_t *bitmap, int id)
3325 id -= bitmap [0] * 8;
3329 return bitmap [1] & (1 << id);
3338 * Return -1 on failure and set klass->has_failure and store a MonoErrorBoxed with the details.
3339 * LOCKING: Acquires the loader lock.
3342 setup_interface_offsets (MonoClass *klass, int cur_slot, gboolean overwrite)
3346 int i, j, num_ifaces;
3348 MonoClass **interfaces_full = NULL;
3349 int *interface_offsets_full = NULL;
3351 GPtrArray **ifaces_array = NULL;
3352 int interface_offsets_count;
3354 mono_loader_lock ();
3356 mono_class_setup_supertypes (klass);
3358 /* compute maximum number of slots and maximum interface id */
3360 num_ifaces = 0; /* this can include duplicated ones */
3361 ifaces_array = g_new0 (GPtrArray *, klass->idepth);
3362 for (j = 0; j < klass->idepth; j++) {
3363 k = klass->supertypes [j];
3365 num_ifaces += k->interface_count;
3366 for (i = 0; i < k->interface_count; i++) {
3367 ic = k->interfaces [i];
3369 mono_class_init (ic);
3371 if (max_iid < ic->interface_id)
3372 max_iid = ic->interface_id;
3374 ifaces = mono_class_get_implemented_interfaces (k, &error);
3375 if (!mono_error_ok (&error)) {
3376 char *name = mono_type_get_full_name (k);
3377 mono_class_set_type_load_failure (klass, "Error getting the interfaces of %s due to %s", name, mono_error_get_message (&error));
3379 mono_error_cleanup (&error);
3384 num_ifaces += ifaces->len;
3385 for (i = 0; i < ifaces->len; ++i) {
3386 ic = (MonoClass *)g_ptr_array_index (ifaces, i);
3387 if (max_iid < ic->interface_id)
3388 max_iid = ic->interface_id;
3390 ifaces_array [j] = ifaces;
3394 if (MONO_CLASS_IS_INTERFACE (klass)) {
3396 if (max_iid < klass->interface_id)
3397 max_iid = klass->interface_id;
3400 /* compute vtable offset for interfaces */
3401 interfaces_full = (MonoClass **)g_malloc0 (sizeof (MonoClass*) * num_ifaces);
3402 interface_offsets_full = (int *)g_malloc (sizeof (int) * num_ifaces);
3404 for (i = 0; i < num_ifaces; i++)
3405 interface_offsets_full [i] = -1;
3407 /* skip the current class */
3408 for (j = 0; j < klass->idepth - 1; j++) {
3409 k = klass->supertypes [j];
3410 ifaces = ifaces_array [j];
3413 for (i = 0; i < ifaces->len; ++i) {
3415 ic = (MonoClass *)g_ptr_array_index (ifaces, i);
3417 /*Force the sharing of interface offsets between parent and subtypes.*/
3418 io = mono_class_interface_offset (k, ic);
3420 set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, ic, io, TRUE);
3425 g_assert (klass == klass->supertypes [klass->idepth - 1]);
3426 ifaces = ifaces_array [klass->idepth - 1];
3428 for (i = 0; i < ifaces->len; ++i) {
3430 ic = (MonoClass *)g_ptr_array_index (ifaces, i);
3431 if (set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, ic, cur_slot, FALSE))
3433 count = count_virtual_methods (ic);
3435 char *name = mono_type_get_full_name (ic);
3436 mono_class_set_type_load_failure (klass, "Error calculating interface offset of %s", name);
3445 if (MONO_CLASS_IS_INTERFACE (klass))
3446 set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, klass, cur_slot, TRUE);
3448 for (interface_offsets_count = 0, i = 0; i < num_ifaces; i++) {
3449 if (interface_offsets_full [i] != -1)
3450 interface_offsets_count ++;
3453 /* Publish the data */
3454 klass->max_interface_id = max_iid;
3456 * We might get called multiple times:
3457 * - mono_class_init ()
3458 * - mono_class_setup_vtable ().
3459 * - mono_class_setup_interface_offsets ().
3460 * mono_class_setup_interface_offsets () passes 0 as CUR_SLOT, so the computed interface offsets will be invalid. This
3461 * means we have to overwrite those when called from other places (#4440).
3463 if (klass->interfaces_packed) {
3465 g_assert (klass->interface_offsets_count == interface_offsets_count);
3469 klass->interface_offsets_count = interface_offsets_count;
3470 klass->interfaces_packed = (MonoClass **)mono_class_alloc (klass, sizeof (MonoClass*) * interface_offsets_count);
3471 klass->interface_offsets_packed = (guint16 *)mono_class_alloc (klass, sizeof (guint16) * interface_offsets_count);
3472 bsize = (sizeof (guint8) * ((max_iid + 1) >> 3)) + (((max_iid + 1) & 7)? 1 :0);
3473 #ifdef COMPRESSED_INTERFACE_BITMAP
3474 bitmap = g_malloc0 (bsize);
3476 bitmap = (uint8_t *)mono_class_alloc0 (klass, bsize);
3478 for (i = 0; i < interface_offsets_count; i++) {
3479 guint32 id = interfaces_full [i]->interface_id;
3480 bitmap [id >> 3] |= (1 << (id & 7));
3481 klass->interfaces_packed [i] = interfaces_full [i];
3482 klass->interface_offsets_packed [i] = interface_offsets_full [i];
3484 #ifdef COMPRESSED_INTERFACE_BITMAP
3485 i = mono_compress_bitmap (NULL, bitmap, bsize);
3486 klass->interface_bitmap = mono_class_alloc0 (klass, i);
3487 mono_compress_bitmap (klass->interface_bitmap, bitmap, bsize);
3490 klass->interface_bitmap = bitmap;
3494 mono_loader_unlock ();
3496 g_free (interfaces_full);
3497 g_free (interface_offsets_full);
3498 for (i = 0; i < klass->idepth; i++) {
3499 ifaces = ifaces_array [i];
3501 g_ptr_array_free (ifaces, TRUE);
3503 g_free (ifaces_array);
3505 //printf ("JUST DONE: ");
3506 //print_implemented_interfaces (klass);
3512 * Setup interface offsets for interfaces.
3514 * - klass->max_interface_id
3515 * - klass->interface_offsets_count
3516 * - klass->interfaces_packed
3517 * - klass->interface_offsets_packed
3518 * - klass->interface_bitmap
3520 * This function can fail @class.
3523 mono_class_setup_interface_offsets (MonoClass *klass)
3525 setup_interface_offsets (klass, 0, FALSE);
3528 /*Checks if @klass has @parent as one of it's parents type gtd
3532 * Bar<T> : Foo<Bar<Bar<T>>>
3536 mono_class_has_gtd_parent (MonoClass *klass, MonoClass *parent)
3538 klass = mono_class_get_generic_type_definition (klass);
3539 parent = mono_class_get_generic_type_definition (parent);
3540 mono_class_setup_supertypes (klass);
3541 mono_class_setup_supertypes (parent);
3543 return klass->idepth >= parent->idepth &&
3544 mono_class_get_generic_type_definition (klass->supertypes [parent->idepth - 1]) == parent;
3548 mono_class_check_vtable_constraints (MonoClass *klass, GList *in_setup)
3550 MonoGenericInst *ginst;
3553 if (!mono_class_is_ginst (klass)) {
3554 mono_class_setup_vtable_full (klass, in_setup);
3555 return !mono_class_has_failure (klass);
3558 mono_class_setup_vtable_full (mono_class_get_generic_type_definition (klass), in_setup);
3559 if (mono_class_set_type_load_failure_causedby_class (klass, mono_class_get_generic_class (klass)->container_class, "Failed to load generic definition vtable"))
3562 ginst = mono_class_get_generic_class (klass)->context.class_inst;
3563 for (i = 0; i < ginst->type_argc; ++i) {
3565 if (ginst->type_argv [i]->type != MONO_TYPE_GENERICINST)
3567 arg = mono_class_from_mono_type (ginst->type_argv [i]);
3568 /*Those 2 will be checked by mono_class_setup_vtable itself*/
3569 if (mono_class_has_gtd_parent (klass, arg) || mono_class_has_gtd_parent (arg, klass))
3571 if (!mono_class_check_vtable_constraints (arg, in_setup)) {
3572 mono_class_set_type_load_failure (klass, "Failed to load generic parameter %d", i);
3580 * mono_class_setup_vtable:
3582 * Creates the generic vtable of CLASS.
3583 * Initializes the following fields in MonoClass:
3586 * Plus all the fields initialized by setup_interface_offsets ().
3587 * If there is an error during vtable construction, klass->has_failure
3588 * is set and details are stored in a MonoErrorBoxed.
3590 * LOCKING: Acquires the loader lock.
3593 mono_class_setup_vtable (MonoClass *klass)
3595 mono_class_setup_vtable_full (klass, NULL);
3599 mono_class_setup_vtable_full (MonoClass *klass, GList *in_setup)
3602 MonoMethod **overrides;
3603 MonoGenericContext *context;
3611 if (MONO_CLASS_IS_INTERFACE (klass)) {
3612 /* This sets method->slot for all methods if this is an interface */
3613 mono_class_setup_methods (klass);
3617 if (mono_class_has_failure (klass))
3620 if (g_list_find (in_setup, klass))
3623 mono_loader_lock ();
3625 if (klass->vtable) {
3626 mono_loader_unlock ();
3630 mono_stats.generic_vtable_count ++;
3631 in_setup = g_list_prepend (in_setup, klass);
3633 if (mono_class_is_ginst (klass)) {
3634 if (!mono_class_check_vtable_constraints (klass, in_setup)) {
3635 mono_loader_unlock ();
3636 g_list_remove (in_setup, klass);
3640 context = mono_class_get_context (klass);
3641 type_token = mono_class_get_generic_class (klass)->container_class->type_token;
3643 context = (MonoGenericContext *) mono_class_try_get_generic_container (klass); //FIXME is this a case of a try?
3644 type_token = klass->type_token;
3647 if (image_is_dynamic (klass->image)) {
3648 /* Generic instances can have zero method overrides without causing any harm.
3649 * This is true since we don't do layout all over again for them, we simply inflate
3650 * the layout of the parent.
3652 mono_reflection_get_dynamic_overrides (klass, &overrides, &onum, &error);
3653 if (!is_ok (&error)) {
3654 mono_loader_unlock ();
3655 g_list_remove (in_setup, klass);
3656 mono_class_set_type_load_failure (klass, "Could not load list of method overrides due to %s", mono_error_get_message (&error));
3657 mono_error_cleanup (&error);
3661 /* The following call fails if there are missing methods in the type */
3662 /* FIXME it's probably a good idea to avoid this for generic instances. */
3663 ok = mono_class_get_overrides_full (klass->image, type_token, &overrides, &onum, context);
3667 mono_class_setup_vtable_general (klass, overrides, onum, in_setup);
3669 mono_class_set_type_load_failure (klass, "Could not load list of method overrides");
3673 mono_loader_unlock ();
3674 g_list_remove (in_setup, klass);
3679 #define DEBUG_INTERFACE_VTABLE_CODE 0
3680 #define TRACE_INTERFACE_VTABLE_CODE 0
3681 #define VERIFY_INTERFACE_VTABLE_CODE 0
3682 #define VTABLE_SELECTOR (1)
3684 #if (TRACE_INTERFACE_VTABLE_CODE|DEBUG_INTERFACE_VTABLE_CODE)
3685 #define DEBUG_INTERFACE_VTABLE(stmt) do {\
3686 if (!(VTABLE_SELECTOR)) break; \
3690 #define DEBUG_INTERFACE_VTABLE(stmt)
3693 #if TRACE_INTERFACE_VTABLE_CODE
3694 #define TRACE_INTERFACE_VTABLE(stmt) do {\
3695 if (!(VTABLE_SELECTOR)) break; \
3699 #define TRACE_INTERFACE_VTABLE(stmt)
3702 #if VERIFY_INTERFACE_VTABLE_CODE
3703 #define VERIFY_INTERFACE_VTABLE(stmt) do {\
3704 if (!(VTABLE_SELECTOR)) break; \
3708 #define VERIFY_INTERFACE_VTABLE(stmt)
3712 #if (TRACE_INTERFACE_VTABLE_CODE|DEBUG_INTERFACE_VTABLE_CODE)
3714 mono_signature_get_full_desc (MonoMethodSignature *sig, gboolean include_namespace)
3718 GString *res = g_string_new ("");
3720 g_string_append_c (res, '(');
3721 for (i = 0; i < sig->param_count; ++i) {
3723 g_string_append_c (res, ',');
3724 mono_type_get_desc (res, sig->params [i], include_namespace);
3726 g_string_append (res, ")=>");
3727 if (sig->ret != NULL) {
3728 mono_type_get_desc (res, sig->ret, include_namespace);
3730 g_string_append (res, "NULL");
3733 g_string_free (res, FALSE);
3737 print_method_signatures (MonoMethod *im, MonoMethod *cm) {
3738 char *im_sig = mono_signature_get_full_desc (mono_method_signature (im), TRUE);
3739 char *cm_sig = mono_signature_get_full_desc (mono_method_signature (cm), TRUE);
3740 printf ("(IM \"%s\", CM \"%s\")", im_sig, cm_sig);
3748 is_wcf_hack_disabled (void)
3750 static gboolean disabled;
3751 static gboolean inited = FALSE;
3753 disabled = g_getenv ("MONO_DISABLE_WCF_HACK") != NULL;
3760 check_interface_method_override (MonoClass *klass, MonoMethod *im, MonoMethod *cm, gboolean require_newslot, gboolean interface_is_explicitly_implemented_by_class, gboolean slot_is_empty)
3762 MonoMethodSignature *cmsig, *imsig;
3763 if (strcmp (im->name, cm->name) == 0) {
3764 if (! (cm->flags & METHOD_ATTRIBUTE_PUBLIC)) {
3765 TRACE_INTERFACE_VTABLE (printf ("[PUBLIC CHECK FAILED]"));
3768 if (! slot_is_empty) {
3769 if (require_newslot) {
3770 if (! interface_is_explicitly_implemented_by_class) {
3771 TRACE_INTERFACE_VTABLE (printf ("[NOT EXPLICIT IMPLEMENTATION IN FULL SLOT REFUSED]"));
3774 if (! (cm->flags & METHOD_ATTRIBUTE_NEW_SLOT)) {
3775 TRACE_INTERFACE_VTABLE (printf ("[NEWSLOT CHECK FAILED]"));
3779 TRACE_INTERFACE_VTABLE (printf ("[FULL SLOT REFUSED]"));
3782 cmsig = mono_method_signature (cm);
3783 imsig = mono_method_signature (im);
3784 if (!cmsig || !imsig) {
3785 mono_class_set_type_load_failure (klass, "Could not resolve the signature of a virtual method");
3789 if (! mono_metadata_signature_equal (cmsig, imsig)) {
3790 TRACE_INTERFACE_VTABLE (printf ("[SIGNATURE CHECK FAILED "));
3791 TRACE_INTERFACE_VTABLE (print_method_signatures (im, cm));
3792 TRACE_INTERFACE_VTABLE (printf ("]"));
3795 TRACE_INTERFACE_VTABLE (printf ("[SECURITY CHECKS]"));
3796 if (mono_security_core_clr_enabled ())
3797 mono_security_core_clr_check_override (klass, cm, im);
3799 TRACE_INTERFACE_VTABLE (printf ("[NAME CHECK OK]"));
3800 if (is_wcf_hack_disabled () && !mono_method_can_access_method_full (cm, im, NULL)) {
3801 char *body_name = mono_method_full_name (cm, TRUE);
3802 char *decl_name = mono_method_full_name (im, TRUE);
3803 mono_class_set_type_load_failure (klass, "Method %s overrides method '%s' which is not accessible", body_name, decl_name);
3811 MonoClass *ic = im->klass;
3812 const char *ic_name_space = ic->name_space;
3813 const char *ic_name = ic->name;
3816 if (! require_newslot) {
3817 TRACE_INTERFACE_VTABLE (printf ("[INJECTED METHOD REFUSED]"));
3820 if (cm->klass->rank == 0) {
3821 TRACE_INTERFACE_VTABLE (printf ("[RANK CHECK FAILED]"));
3824 cmsig = mono_method_signature (cm);
3825 imsig = mono_method_signature (im);
3826 if (!cmsig || !imsig) {
3827 mono_class_set_type_load_failure (klass, "Could not resolve the signature of a virtual method");
3831 if (! mono_metadata_signature_equal (cmsig, imsig)) {
3832 TRACE_INTERFACE_VTABLE (printf ("[(INJECTED) SIGNATURE CHECK FAILED "));
3833 TRACE_INTERFACE_VTABLE (print_method_signatures (im, cm));
3834 TRACE_INTERFACE_VTABLE (printf ("]"));
3837 if (mono_class_get_image (ic) != mono_defaults.corlib) {
3838 TRACE_INTERFACE_VTABLE (printf ("[INTERFACE CORLIB CHECK FAILED]"));
3841 if ((ic_name_space == NULL) || (strcmp (ic_name_space, "System.Collections.Generic") != 0)) {
3842 TRACE_INTERFACE_VTABLE (printf ("[INTERFACE NAMESPACE CHECK FAILED]"));
3845 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))) {
3846 TRACE_INTERFACE_VTABLE (printf ("[INTERFACE NAME CHECK FAILED]"));
3850 subname = strstr (cm->name, ic_name_space);
3851 if (subname != cm->name) {
3852 TRACE_INTERFACE_VTABLE (printf ("[ACTUAL NAMESPACE CHECK FAILED]"));
3855 subname += strlen (ic_name_space);
3856 if (subname [0] != '.') {
3857 TRACE_INTERFACE_VTABLE (printf ("[FIRST DOT CHECK FAILED]"));
3861 if (strstr (subname, ic_name) != subname) {
3862 TRACE_INTERFACE_VTABLE (printf ("[ACTUAL CLASS NAME CHECK FAILED]"));
3865 subname += strlen (ic_name);
3866 if (subname [0] != '.') {
3867 TRACE_INTERFACE_VTABLE (printf ("[SECOND DOT CHECK FAILED]"));
3871 if (strcmp (subname, im->name) != 0) {
3872 TRACE_INTERFACE_VTABLE (printf ("[METHOD NAME CHECK FAILED]"));
3876 TRACE_INTERFACE_VTABLE (printf ("[SECURITY CHECKS (INJECTED CASE)]"));
3877 if (mono_security_core_clr_enabled ())
3878 mono_security_core_clr_check_override (klass, cm, im);
3880 TRACE_INTERFACE_VTABLE (printf ("[INJECTED INTERFACE CHECK OK]"));
3881 if (is_wcf_hack_disabled () && !mono_method_can_access_method_full (cm, im, NULL)) {
3882 char *body_name = mono_method_full_name (cm, TRUE);
3883 char *decl_name = mono_method_full_name (im, TRUE);
3884 mono_class_set_type_load_failure (klass, "Method %s overrides method '%s' which is not accessible", body_name, decl_name);
3894 #if (TRACE_INTERFACE_VTABLE_CODE|DEBUG_INTERFACE_VTABLE_CODE)
3896 foreach_override (gpointer key, gpointer value, gpointer user_data) {
3897 MonoMethod *method = key;
3898 MonoMethod *override = value;
3899 MonoClass *method_class = mono_method_get_class (method);
3900 MonoClass *override_class = mono_method_get_class (override);
3902 printf (" Method '%s.%s:%s' has override '%s.%s:%s'\n",
3903 mono_class_get_namespace (method_class), mono_class_get_name (method_class), mono_method_get_name (method),
3904 mono_class_get_namespace (override_class), mono_class_get_name (override_class), mono_method_get_name (override));
3907 print_overrides (GHashTable *override_map, const char *message) {
3909 printf ("Override map \"%s\" START:\n", message);
3910 g_hash_table_foreach (override_map, foreach_override, NULL);
3911 printf ("Override map \"%s\" END.\n", message);
3913 printf ("Override map \"%s\" EMPTY.\n", message);
3917 print_vtable_full (MonoClass *klass, MonoMethod** vtable, int size, int first_non_interface_slot, const char *message, gboolean print_interfaces) {
3918 char *full_name = mono_type_full_name (&klass->byval_arg);
3922 printf ("*** Vtable for class '%s' at \"%s\" (size %d)\n", full_name, message, size);
3924 if (print_interfaces) {
3925 print_implemented_interfaces (klass);
3926 printf ("* Interfaces for class '%s' done.\nStarting vtable (size %d):\n", full_name, size);
3929 if (klass->parent) {
3930 parent_size = klass->parent->vtable_size;
3934 for (i = 0; i < size; ++i) {
3935 MonoMethod *cm = vtable [i];
3936 char *cm_name = cm ? mono_method_full_name (cm, TRUE) : g_strdup ("nil");
3937 char newness = (i < parent_size) ? 'O' : ((i < first_non_interface_slot) ? 'I' : 'N');
3939 printf (" [%c][%03d][INDEX %03d] %s [%p]\n", newness, i, cm ? cm->slot : - 1, cm_name, cm);
3947 #if VERIFY_INTERFACE_VTABLE_CODE
3949 mono_method_try_get_vtable_index (MonoMethod *method)
3951 if (method->is_inflated && (method->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
3952 MonoMethodInflated *imethod = (MonoMethodInflated*)method;
3953 if (imethod->declaring->is_generic)
3954 return imethod->declaring->slot;
3956 return method->slot;
3960 mono_class_verify_vtable (MonoClass *klass)
3963 char *full_name = mono_type_full_name (&klass->byval_arg);
3965 printf ("*** Verifying VTable of class '%s' \n", full_name);
3969 if (!klass->methods)
3972 count = mono_class_method_count (klass);
3973 for (i = 0; i < count; ++i) {
3974 MonoMethod *cm = klass->methods [i];
3977 if (!(cm->flags & METHOD_ATTRIBUTE_VIRTUAL))
3981 full_name = mono_method_full_name (cm, TRUE);
3983 slot = mono_method_try_get_vtable_index (cm);
3985 if (slot >= klass->vtable_size) {
3986 printf ("\tInvalid method %s at index %d with vtable of length %d\n", full_name, slot, klass->vtable_size);
3990 if (slot >= 0 && klass->vtable [slot] != cm && (klass->vtable [slot])) {
3991 char *other_name = klass->vtable [slot] ? mono_method_full_name (klass->vtable [slot], TRUE) : g_strdup ("[null value]");
3992 printf ("\tMethod %s has slot %d but vtable has %s on it\n", full_name, slot, other_name);
3993 g_free (other_name);
3996 printf ("\tVirtual method %s does n't have an assigned slot\n", full_name);
4003 print_unimplemented_interface_method_info (MonoClass *klass, MonoClass *ic, MonoMethod *im, int im_slot, MonoMethod **overrides, int onum)
4006 char *method_signature;
4009 for (index = 0; index < onum; ++index) {
4010 mono_trace_warning (MONO_TRACE_TYPE, " at slot %d: %s (%d) overrides %s (%d)", im_slot, overrides [index*2+1]->name,
4011 overrides [index*2+1]->slot, overrides [index*2]->name, overrides [index*2]->slot);
4013 method_signature = mono_signature_get_desc (mono_method_signature (im), FALSE);
4014 type_name = mono_type_full_name (&klass->byval_arg);
4015 mono_trace_warning (MONO_TRACE_TYPE, "no implementation for interface method %s::%s(%s) in class %s",
4016 mono_type_get_name (&ic->byval_arg), im->name, method_signature, type_name);
4017 g_free (method_signature);
4019 mono_class_setup_methods (klass);
4020 if (mono_class_has_failure (klass)) {
4021 char *name = mono_type_get_full_name (klass);
4022 mono_trace_warning (MONO_TRACE_TYPE, "CLASS %s failed to resolve methods", name);
4026 mcount = mono_class_get_method_count (klass);
4027 for (index = 0; index < mcount; ++index) {
4028 MonoMethod *cm = klass->methods [index];
4029 method_signature = mono_signature_get_desc (mono_method_signature (cm), TRUE);
4031 mono_trace_warning (MONO_TRACE_TYPE, "METHOD %s(%s)", cm->name, method_signature);
4032 g_free (method_signature);
4037 mono_method_get_method_definition (MonoMethod *method)
4039 while (method->is_inflated)
4040 method = ((MonoMethodInflated*)method)->declaring;
4045 verify_class_overrides (MonoClass *klass, MonoMethod **overrides, int onum)
4049 for (i = 0; i < onum; ++i) {
4050 MonoMethod *decl = overrides [i * 2];
4051 MonoMethod *body = overrides [i * 2 + 1];
4053 if (mono_class_get_generic_type_definition (body->klass) != mono_class_get_generic_type_definition (klass)) {
4054 mono_class_set_type_load_failure (klass, "Method belongs to a different class than the declared one");
4058 if (!(body->flags & METHOD_ATTRIBUTE_VIRTUAL) || (body->flags & METHOD_ATTRIBUTE_STATIC)) {
4059 if (body->flags & METHOD_ATTRIBUTE_STATIC)
4060 mono_class_set_type_load_failure (klass, "Method must not be static to override a base type");
4062 mono_class_set_type_load_failure (klass, "Method must be virtual to override a base type");
4066 if (!(decl->flags & METHOD_ATTRIBUTE_VIRTUAL) || (decl->flags & METHOD_ATTRIBUTE_STATIC)) {
4067 if (body->flags & METHOD_ATTRIBUTE_STATIC)
4068 mono_class_set_type_load_failure (klass, "Cannot override a static method in a base type");
4070 mono_class_set_type_load_failure (klass, "Cannot override a non virtual method in a base type");
4074 if (!mono_class_is_assignable_from_slow (decl->klass, klass)) {
4075 mono_class_set_type_load_failure (klass, "Method overrides a class or interface that is not extended or implemented by this type");
4079 body = mono_method_get_method_definition (body);
4080 decl = mono_method_get_method_definition (decl);
4082 if (is_wcf_hack_disabled () && !mono_method_can_access_method_full (body, decl, NULL)) {
4083 char *body_name = mono_method_full_name (body, TRUE);
4084 char *decl_name = mono_method_full_name (decl, TRUE);
4085 mono_class_set_type_load_failure (klass, "Method %s overrides method '%s' which is not accessible", body_name, decl_name);
4095 mono_class_need_stelemref_method (MonoClass *klass)
4097 return klass->rank == 1 && MONO_TYPE_IS_REFERENCE (&klass->element_class->byval_arg);
4101 * LOCKING: this is supposed to be called with the loader lock held.
4104 mono_class_setup_vtable_general (MonoClass *klass, MonoMethod **overrides, int onum, GList *in_setup)
4108 MonoMethod **vtable = NULL;
4109 int i, max_vtsize = 0, cur_slot = 0;
4111 GPtrArray *ifaces = NULL;
4112 GHashTable *override_map = NULL;
4114 #if (DEBUG_INTERFACE_VTABLE_CODE|TRACE_INTERFACE_VTABLE_CODE)
4115 int first_non_interface_slot;
4117 GSList *virt_methods = NULL, *l;
4118 int stelemref_slot = 0;
4123 if (overrides && !verify_class_overrides (klass, overrides, onum))
4126 ifaces = mono_class_get_implemented_interfaces (klass, &error);
4127 if (!mono_error_ok (&error)) {
4128 char *name = mono_type_get_full_name (klass);
4129 mono_class_set_type_load_failure (klass, "Could not resolve %s interfaces due to %s", name, mono_error_get_message (&error));
4131 mono_error_cleanup (&error);
4133 } else if (ifaces) {
4134 for (i = 0; i < ifaces->len; i++) {
4135 MonoClass *ic = (MonoClass *)g_ptr_array_index (ifaces, i);
4136 max_vtsize += mono_class_get_method_count (ic);
4138 g_ptr_array_free (ifaces, TRUE);
4142 if (klass->parent) {
4143 mono_class_init (klass->parent);
4144 mono_class_setup_vtable_full (klass->parent, in_setup);
4146 if (mono_class_set_type_load_failure_causedby_class (klass, klass->parent, "Parent class failed to load"))
4149 max_vtsize += klass->parent->vtable_size;
4150 cur_slot = klass->parent->vtable_size;
4153 max_vtsize += mono_class_get_method_count (klass);
4155 /*Array have a slot for stelemref*/
4156 if (mono_class_need_stelemref_method (klass)) {
4157 stelemref_slot = cur_slot;
4162 /* printf ("METAINIT %s.%s\n", klass->name_space, klass->name); */
4164 cur_slot = setup_interface_offsets (klass, cur_slot, TRUE);
4165 if (cur_slot == -1) /*setup_interface_offsets fails the type.*/
4168 max_iid = klass->max_interface_id;
4169 DEBUG_INTERFACE_VTABLE (first_non_interface_slot = cur_slot);
4171 /* Optimized version for generic instances */
4172 if (mono_class_is_ginst (klass)) {
4174 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
4177 mono_class_setup_vtable_full (gklass, in_setup);
4178 if (mono_class_set_type_load_failure_causedby_class (klass, gklass, "Could not load generic definition"))
4181 tmp = (MonoMethod **)mono_class_alloc0 (klass, sizeof (gpointer) * gklass->vtable_size);
4182 klass->vtable_size = gklass->vtable_size;
4183 for (i = 0; i < gklass->vtable_size; ++i)
4184 if (gklass->vtable [i]) {
4185 MonoMethod *inflated = mono_class_inflate_generic_method_full_checked (gklass->vtable [i], klass, mono_class_get_context (klass), &error);
4186 if (!mono_error_ok (&error)) {
4187 mono_class_set_type_load_failure (klass, "Could not inflate method due to %s", mono_error_get_message (&error));
4188 mono_error_cleanup (&error);
4192 tmp [i]->slot = gklass->vtable [i]->slot;
4194 mono_memory_barrier ();
4195 klass->vtable = tmp;
4197 /* Have to set method->slot for abstract virtual methods */
4198 if (klass->methods && gklass->methods) {
4199 int mcount = mono_class_get_method_count (klass);
4200 for (i = 0; i < mcount; ++i)
4201 if (klass->methods [i]->slot == -1)
4202 klass->methods [i]->slot = gklass->methods [i]->slot;
4208 vtable = (MonoMethod **)g_malloc0 (sizeof (gpointer) * max_vtsize);
4210 if (klass->parent && klass->parent->vtable_size) {
4211 MonoClass *parent = klass->parent;
4214 memcpy (vtable, parent->vtable, sizeof (gpointer) * parent->vtable_size);
4216 // Also inherit parent interface vtables, just as a starting point.
4217 // This is needed otherwise bug-77127.exe fails when the property methods
4218 // have different names in the iterface and the class, because for child
4219 // classes the ".override" information is not used anymore.
4220 for (i = 0; i < parent->interface_offsets_count; i++) {
4221 MonoClass *parent_interface = parent->interfaces_packed [i];
4222 int interface_offset = mono_class_interface_offset (klass, parent_interface);
4223 /*FIXME this is now dead code as this condition will never hold true.
4224 Since interface offsets are inherited then the offset of an interface implemented
4225 by a parent will never be the out of it's vtable boundary.
4227 if (interface_offset >= parent->vtable_size) {
4228 int parent_interface_offset = mono_class_interface_offset (parent, parent_interface);
4231 mono_class_setup_methods (parent_interface); /*FIXME Just kill this whole chunk of dead code*/
4232 TRACE_INTERFACE_VTABLE (printf (" +++ Inheriting interface %s.%s\n", parent_interface->name_space, parent_interface->name));
4233 int mcount = mono_class_get_method_count (parent_interface);
4234 for (j = 0; j < mcount && !mono_class_has_failure (klass); j++) {
4235 vtable [interface_offset + j] = parent->vtable [parent_interface_offset + j];
4236 TRACE_INTERFACE_VTABLE (printf (" --- Inheriting: [%03d][(%03d)+(%03d)] => [%03d][(%03d)+(%03d)]\n",
4237 parent_interface_offset + j, parent_interface_offset, j,
4238 interface_offset + j, interface_offset, j));
4245 /*Array have a slot for stelemref*/
4246 if (mono_class_need_stelemref_method (klass)) {
4247 MonoMethod *method = mono_marshal_get_virtual_stelemref (klass);
4249 method->slot = stelemref_slot;
4251 g_assert (method->slot == stelemref_slot);
4253 vtable [stelemref_slot] = method;
4256 TRACE_INTERFACE_VTABLE (print_vtable_full (klass, vtable, cur_slot, first_non_interface_slot, "AFTER INHERITING PARENT VTABLE", TRUE));
4257 /* override interface methods */
4258 for (i = 0; i < onum; i++) {
4259 MonoMethod *decl = overrides [i*2];
4260 if (MONO_CLASS_IS_INTERFACE (decl->klass)) {
4262 dslot = mono_method_get_vtable_slot (decl);
4264 mono_class_set_type_load_failure (klass, "");
4268 dslot += mono_class_interface_offset (klass, decl->klass);
4269 vtable [dslot] = overrides [i*2 + 1];
4270 vtable [dslot]->slot = dslot;
4272 override_map = g_hash_table_new (mono_aligned_addr_hash, NULL);
4274 g_hash_table_insert (override_map, overrides [i * 2], overrides [i * 2 + 1]);
4276 if (mono_security_core_clr_enabled ())
4277 mono_security_core_clr_check_override (klass, vtable [dslot], decl);
4280 TRACE_INTERFACE_VTABLE (print_overrides (override_map, "AFTER OVERRIDING INTERFACE METHODS"));
4281 TRACE_INTERFACE_VTABLE (print_vtable_full (klass, vtable, cur_slot, first_non_interface_slot, "AFTER OVERRIDING INTERFACE METHODS", FALSE));
4284 * Create a list of virtual methods to avoid calling
4285 * mono_class_get_virtual_methods () which is slow because of the metadata
4289 gpointer iter = NULL;
4292 virt_methods = NULL;
4293 while ((cm = mono_class_get_virtual_methods (klass, &iter))) {
4294 virt_methods = g_slist_prepend (virt_methods, cm);
4296 if (mono_class_has_failure (klass))
4300 // Loop on all implemented interfaces...
4301 for (i = 0; i < klass->interface_offsets_count; i++) {
4302 MonoClass *parent = klass->parent;
4304 gboolean interface_is_explicitly_implemented_by_class;
4307 ic = klass->interfaces_packed [i];
4308 ic_offset = mono_class_interface_offset (klass, ic);
4310 mono_class_setup_methods (ic);
4311 if (mono_class_has_failure (ic))
4314 // Check if this interface is explicitly implemented (instead of just inherited)
4315 if (parent != NULL) {
4316 int implemented_interfaces_index;
4317 interface_is_explicitly_implemented_by_class = FALSE;
4318 for (implemented_interfaces_index = 0; implemented_interfaces_index < klass->interface_count; implemented_interfaces_index++) {
4319 if (ic == klass->interfaces [implemented_interfaces_index]) {
4320 interface_is_explicitly_implemented_by_class = TRUE;
4325 interface_is_explicitly_implemented_by_class = TRUE;
4328 // Loop on all interface methods...
4329 int mcount = mono_class_get_method_count (ic);
4330 for (im_index = 0; im_index < mcount; im_index++) {
4331 MonoMethod *im = ic->methods [im_index];
4332 int im_slot = ic_offset + im->slot;
4333 MonoMethod *override_im = (override_map != NULL) ? (MonoMethod *)g_hash_table_lookup (override_map, im) : NULL;
4335 if (im->flags & METHOD_ATTRIBUTE_STATIC)
4338 TRACE_INTERFACE_VTABLE (printf ("\tchecking iface method %s\n", mono_method_full_name (im,1)));
4340 // If there is an explicit implementation, just use it right away,
4341 // otherwise look for a matching method
4342 if (override_im == NULL) {
4346 // First look for a suitable method among the class methods
4347 for (l = virt_methods; l; l = l->next) {
4348 cm = (MonoMethod *)l->data;
4349 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)));
4350 if (check_interface_method_override (klass, im, cm, TRUE, interface_is_explicitly_implemented_by_class, (vtable [im_slot] == NULL))) {
4351 TRACE_INTERFACE_VTABLE (printf ("[check ok]: ASSIGNING"));
4352 vtable [im_slot] = cm;
4353 /* Why do we need this? */
4358 TRACE_INTERFACE_VTABLE (printf ("\n"));
4359 if (mono_class_has_failure (klass)) /*Might be set by check_interface_method_override*/
4363 // If the slot is still empty, look in all the inherited virtual methods...
4364 if ((vtable [im_slot] == NULL) && klass->parent != NULL) {
4365 MonoClass *parent = klass->parent;
4366 // Reverse order, so that last added methods are preferred
4367 for (cm_index = parent->vtable_size - 1; cm_index >= 0; cm_index--) {
4368 MonoMethod *cm = parent->vtable [cm_index];
4370 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));
4371 if ((cm != NULL) && check_interface_method_override (klass, im, cm, FALSE, FALSE, TRUE)) {
4372 TRACE_INTERFACE_VTABLE (printf ("[everything ok]: ASSIGNING"));
4373 vtable [im_slot] = cm;
4374 /* Why do we need this? */
4380 if (mono_class_has_failure (klass)) /*Might be set by check_interface_method_override*/
4382 TRACE_INTERFACE_VTABLE ((cm != NULL) && printf ("\n"));
4386 g_assert (vtable [im_slot] == override_im);
4391 // If the class is not abstract, check that all its interface slots are full.
4392 // The check is done here and not directly at the end of the loop above because
4393 // it can happen (for injected generic array interfaces) that the same slot is
4394 // processed multiple times (those interfaces have overlapping slots), and it
4395 // will not always be the first pass the one that fills the slot.
4396 if (!mono_class_is_abstract (klass)) {
4397 for (i = 0; i < klass->interface_offsets_count; i++) {
4401 ic = klass->interfaces_packed [i];
4402 ic_offset = mono_class_interface_offset (klass, ic);
4404 int mcount = mono_class_get_method_count (ic);
4405 for (im_index = 0; im_index < mcount; im_index++) {
4406 MonoMethod *im = ic->methods [im_index];
4407 int im_slot = ic_offset + im->slot;
4409 if (im->flags & METHOD_ATTRIBUTE_STATIC)
4412 TRACE_INTERFACE_VTABLE (printf (" [class is not abstract, checking slot %d for interface '%s'.'%s', method %s, slot check is %d]\n",
4413 im_slot, ic->name_space, ic->name, im->name, (vtable [im_slot] == NULL)));
4414 if (vtable [im_slot] == NULL) {
4415 print_unimplemented_interface_method_info (klass, ic, im, im_slot, overrides, onum);
4422 TRACE_INTERFACE_VTABLE (print_vtable_full (klass, vtable, cur_slot, first_non_interface_slot, "AFTER SETTING UP INTERFACE METHODS", FALSE));
4423 for (l = virt_methods; l; l = l->next) {
4424 cm = (MonoMethod *)l->data;
4426 * If the method is REUSE_SLOT, we must check in the
4427 * base class for a method to override.
4429 if (!(cm->flags & METHOD_ATTRIBUTE_NEW_SLOT)) {
4431 for (k = klass->parent; k ; k = k->parent) {
4436 while ((m1 = mono_class_get_virtual_methods (k, &k_iter))) {
4437 MonoMethodSignature *cmsig, *m1sig;
4439 cmsig = mono_method_signature (cm);
4440 m1sig = mono_method_signature (m1);
4442 if (!cmsig || !m1sig) {
4443 /* FIXME proper error message */
4444 mono_class_set_type_load_failure (klass, "");
4448 if (!strcmp(cm->name, m1->name) &&
4449 mono_metadata_signature_equal (cmsig, m1sig)) {
4451 if (mono_security_core_clr_enabled ())
4452 mono_security_core_clr_check_override (klass, cm, m1);
4454 slot = mono_method_get_vtable_slot (m1);
4458 if (is_wcf_hack_disabled () && !mono_method_can_access_method_full (cm, m1, NULL)) {
4459 char *body_name = mono_method_full_name (cm, TRUE);
4460 char *decl_name = mono_method_full_name (m1, TRUE);
4461 mono_class_set_type_load_failure (klass, "Method %s overrides method '%s' which is not accessible", body_name, decl_name);
4467 g_assert (cm->slot < max_vtsize);
4469 override_map = g_hash_table_new (mono_aligned_addr_hash, NULL);
4470 TRACE_INTERFACE_VTABLE (printf ("adding iface override from %s [%p] to %s [%p]\n",
4471 mono_method_full_name (m1, 1), m1,
4472 mono_method_full_name (cm, 1), cm));
4473 g_hash_table_insert (override_map, m1, cm);
4477 if (mono_class_has_failure (k))
4487 /*Non final newslot methods must be given a non-interface vtable slot*/
4488 if ((cm->flags & METHOD_ATTRIBUTE_NEW_SLOT) && !(cm->flags & METHOD_ATTRIBUTE_FINAL) && cm->slot >= 0)
4492 cm->slot = cur_slot++;
4494 if (!(cm->flags & METHOD_ATTRIBUTE_ABSTRACT))
4495 vtable [cm->slot] = cm;
4498 /* override non interface methods */
4499 for (i = 0; i < onum; i++) {
4500 MonoMethod *decl = overrides [i*2];
4501 if (!MONO_CLASS_IS_INTERFACE (decl->klass)) {
4502 g_assert (decl->slot != -1);
4503 vtable [decl->slot] = overrides [i*2 + 1];
4504 overrides [i * 2 + 1]->slot = decl->slot;
4506 override_map = g_hash_table_new (mono_aligned_addr_hash, NULL);
4507 TRACE_INTERFACE_VTABLE (printf ("adding explicit override from %s [%p] to %s [%p]\n",
4508 mono_method_full_name (decl, 1), decl,
4509 mono_method_full_name (overrides [i * 2 + 1], 1), overrides [i * 2 + 1]));
4510 g_hash_table_insert (override_map, decl, overrides [i * 2 + 1]);
4512 if (mono_security_core_clr_enabled ())
4513 mono_security_core_clr_check_override (klass, vtable [decl->slot], decl);
4518 * If a method occupies more than one place in the vtable, and it is
4519 * overriden, then change the other occurances too.
4524 for (i = 0; i < max_vtsize; ++i)
4526 TRACE_INTERFACE_VTABLE (printf ("checking slot %d method %s[%p] for overrides\n", i, mono_method_full_name (vtable [i], 1), vtable [i]));
4528 cm = (MonoMethod *)g_hash_table_lookup (override_map, vtable [i]);
4533 g_hash_table_destroy (override_map);
4534 override_map = NULL;
4537 g_slist_free (virt_methods);
4538 virt_methods = NULL;
4540 /* Ensure that all vtable slots are filled with concrete instance methods */
4541 if (!mono_class_is_abstract (klass)) {
4542 for (i = 0; i < cur_slot; ++i) {
4543 if (vtable [i] == NULL || (vtable [i]->flags & (METHOD_ATTRIBUTE_ABSTRACT | METHOD_ATTRIBUTE_STATIC))) {
4544 char *type_name = mono_type_get_full_name (klass);
4545 char *method_name = vtable [i] ? mono_method_full_name (vtable [i], TRUE) : g_strdup ("none");
4546 mono_class_set_type_load_failure (klass, "Type %s has invalid vtable method slot %d with method %s", type_name, i, method_name);
4548 g_free (method_name);
4555 if (mono_class_is_ginst (klass)) {
4556 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
4558 mono_class_init (gklass);
4560 klass->vtable_size = MAX (gklass->vtable_size, cur_slot);
4562 /* Check that the vtable_size value computed in mono_class_init () is correct */
4563 if (klass->vtable_size)
4564 g_assert (cur_slot == klass->vtable_size);
4565 klass->vtable_size = cur_slot;
4568 /* Try to share the vtable with our parent. */
4569 if (klass->parent && (klass->parent->vtable_size == klass->vtable_size) && (memcmp (klass->parent->vtable, vtable, sizeof (gpointer) * klass->vtable_size) == 0)) {
4570 mono_memory_barrier ();
4571 klass->vtable = klass->parent->vtable;
4573 MonoMethod **tmp = (MonoMethod **)mono_class_alloc0 (klass, sizeof (gpointer) * klass->vtable_size);
4574 memcpy (tmp, vtable, sizeof (gpointer) * klass->vtable_size);
4575 mono_memory_barrier ();
4576 klass->vtable = tmp;
4579 DEBUG_INTERFACE_VTABLE (print_vtable_full (klass, klass->vtable, klass->vtable_size, first_non_interface_slot, "FINALLY", FALSE));
4580 if (mono_print_vtable) {
4583 print_implemented_interfaces (klass);
4585 for (i = 0; i <= max_iid; i++)
4586 if (MONO_CLASS_IMPLEMENTS_INTERFACE (klass, i))
4589 printf ("VTable %s (vtable entries = %d, interfaces = %d)\n", mono_type_full_name (&klass->byval_arg),
4590 klass->vtable_size, icount);
4592 for (i = 0; i < cur_slot; ++i) {
4597 printf (" slot assigned: %03d, slot index: %03d %s\n", i, cm->slot,
4598 mono_method_full_name (cm, TRUE));
4604 printf ("Interfaces %s.%s (max_iid = %d)\n", klass->name_space,
4605 klass->name, max_iid);
4607 for (i = 0; i < klass->interface_count; i++) {
4608 ic = klass->interfaces [i];
4609 printf (" slot offset: %03d, method count: %03d, iid: %03d %s\n",
4610 mono_class_interface_offset (klass, ic),
4611 count_virtual_methods (ic), ic->interface_id, mono_type_full_name (&ic->byval_arg));
4614 for (k = klass->parent; k ; k = k->parent) {
4615 for (i = 0; i < k->interface_count; i++) {
4616 ic = k->interfaces [i];
4617 printf (" parent slot offset: %03d, method count: %03d, iid: %03d %s\n",
4618 mono_class_interface_offset (klass, ic),
4619 count_virtual_methods (ic), ic->interface_id, mono_type_full_name (&ic->byval_arg));
4627 VERIFY_INTERFACE_VTABLE (mono_class_verify_vtable (klass));
4632 char *name = mono_type_get_full_name (klass);
4633 mono_class_set_type_load_failure (klass, "VTable setup of type %s failed", name);
4637 g_hash_table_destroy (override_map);
4639 g_slist_free (virt_methods);
4644 * mono_method_get_vtable_slot:
4646 * Returns method->slot, computing it if neccesary. Return -1 on failure.
4647 * LOCKING: Acquires the loader lock.
4649 * FIXME Use proper MonoError machinery here.
4652 mono_method_get_vtable_slot (MonoMethod *method)
4654 if (method->slot == -1) {
4655 mono_class_setup_vtable (method->klass);
4656 if (mono_class_has_failure (method->klass))
4658 if (method->slot == -1) {
4662 if (!mono_class_is_ginst (method->klass)) {
4663 g_assert (method->is_inflated);
4664 return mono_method_get_vtable_slot (((MonoMethodInflated*)method)->declaring);
4667 /* This can happen for abstract methods of generic instances due to the shortcut code in mono_class_setup_vtable_general (). */
4668 g_assert (mono_class_is_ginst (method->klass));
4669 gklass = mono_class_get_generic_class (method->klass)->container_class;
4670 mono_class_setup_methods (method->klass);
4671 g_assert (method->klass->methods);
4672 mcount = mono_class_get_method_count (method->klass);
4673 for (i = 0; i < mcount; ++i) {
4674 if (method->klass->methods [i] == method)
4677 g_assert (i < mcount);
4678 g_assert (gklass->methods);
4679 method->slot = gklass->methods [i]->slot;
4681 g_assert (method->slot != -1);
4683 return method->slot;
4687 * mono_method_get_vtable_index:
4690 * Returns the index into the runtime vtable to access the method or,
4691 * in the case of a virtual generic method, the virtual generic method
4692 * thunk. Returns -1 on failure.
4694 * FIXME Use proper MonoError machinery here.
4697 mono_method_get_vtable_index (MonoMethod *method)
4699 if (method->is_inflated && (method->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
4700 MonoMethodInflated *imethod = (MonoMethodInflated*)method;
4701 if (imethod->declaring->is_generic)
4702 return mono_method_get_vtable_slot (imethod->declaring);
4704 return mono_method_get_vtable_slot (method);
4707 static MonoMethod *default_ghc = NULL;
4708 static MonoMethod *default_finalize = NULL;
4709 static int finalize_slot = -1;
4710 static int ghc_slot = -1;
4713 initialize_object_slots (MonoClass *klass)
4718 if (klass == mono_defaults.object_class) {
4719 mono_class_setup_vtable (klass);
4720 for (i = 0; i < klass->vtable_size; ++i) {
4721 MonoMethod *cm = klass->vtable [i];
4723 if (!strcmp (cm->name, "GetHashCode"))
4725 else if (!strcmp (cm->name, "Finalize"))
4729 g_assert (ghc_slot > 0);
4730 default_ghc = klass->vtable [ghc_slot];
4732 g_assert (finalize_slot > 0);
4733 default_finalize = klass->vtable [finalize_slot];
4738 MonoMethod *array_method;
4740 } GenericArrayMethodInfo;
4742 static int generic_array_method_num = 0;
4743 static GenericArrayMethodInfo *generic_array_method_info = NULL;
4746 generic_array_methods (MonoClass *klass)
4748 int i, count_generic = 0, mcount;
4749 GList *list = NULL, *tmp;
4750 if (generic_array_method_num)
4751 return generic_array_method_num;
4752 mono_class_setup_methods (klass->parent); /*This is setting up System.Array*/
4753 g_assert (!mono_class_has_failure (klass->parent)); /*So hitting this assert is a huge problem*/
4754 mcount = mono_class_get_method_count (klass->parent);
4755 for (i = 0; i < mcount; i++) {
4756 MonoMethod *m = klass->parent->methods [i];
4757 if (!strncmp (m->name, "InternalArray__", 15)) {
4759 list = g_list_prepend (list, m);
4762 list = g_list_reverse (list);
4763 generic_array_method_info = (GenericArrayMethodInfo *)mono_image_alloc (mono_defaults.corlib, sizeof (GenericArrayMethodInfo) * count_generic);
4765 for (tmp = list; tmp; tmp = tmp->next) {
4766 const char *mname, *iname;
4768 MonoMethod *m = (MonoMethod *)tmp->data;
4769 const char *ireadonlylist_prefix = "InternalArray__IReadOnlyList_";
4770 const char *ireadonlycollection_prefix = "InternalArray__IReadOnlyCollection_";
4772 generic_array_method_info [i].array_method = m;
4773 if (!strncmp (m->name, "InternalArray__ICollection_", 27)) {
4774 iname = "System.Collections.Generic.ICollection`1.";
4775 mname = m->name + 27;
4776 } else if (!strncmp (m->name, "InternalArray__IEnumerable_", 27)) {
4777 iname = "System.Collections.Generic.IEnumerable`1.";
4778 mname = m->name + 27;
4779 } else if (!strncmp (m->name, ireadonlylist_prefix, strlen (ireadonlylist_prefix))) {
4780 iname = "System.Collections.Generic.IReadOnlyList`1.";
4781 mname = m->name + strlen (ireadonlylist_prefix);
4782 } else if (!strncmp (m->name, ireadonlycollection_prefix, strlen (ireadonlycollection_prefix))) {
4783 iname = "System.Collections.Generic.IReadOnlyCollection`1.";
4784 mname = m->name + strlen (ireadonlycollection_prefix);
4785 } else if (!strncmp (m->name, "InternalArray__", 15)) {
4786 iname = "System.Collections.Generic.IList`1.";
4787 mname = m->name + 15;
4789 g_assert_not_reached ();
4792 name = (gchar *)mono_image_alloc (mono_defaults.corlib, strlen (iname) + strlen (mname) + 1);
4793 strcpy (name, iname);
4794 strcpy (name + strlen (iname), mname);
4795 generic_array_method_info [i].name = name;
4798 /*g_print ("array generic methods: %d\n", count_generic);*/
4800 generic_array_method_num = count_generic;
4802 return generic_array_method_num;
4806 setup_generic_array_ifaces (MonoClass *klass, MonoClass *iface, MonoMethod **methods, int pos)
4808 MonoGenericContext tmp_context;
4811 tmp_context.class_inst = NULL;
4812 tmp_context.method_inst = mono_class_get_generic_class (iface)->context.class_inst;
4813 //g_print ("setting up array interface: %s\n", mono_type_get_name_full (&iface->byval_arg, 0));
4815 for (i = 0; i < generic_array_method_num; i++) {
4817 MonoMethod *m = generic_array_method_info [i].array_method;
4818 MonoMethod *inflated;
4820 inflated = mono_class_inflate_generic_method_checked (m, &tmp_context, &error);
4821 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
4822 methods [pos++] = mono_marshal_get_generic_array_helper (klass, iface, generic_array_method_info [i].name, inflated);
4827 concat_two_strings_with_zero (MonoImage *image, const char *s1, const char *s2)
4829 int null_length = strlen ("(null)");
4830 int len = (s1 ? strlen (s1) : null_length) + (s2 ? strlen (s2) : null_length) + 2;
4831 char *s = (char *)mono_image_alloc (image, len);
4834 result = g_snprintf (s, len, "%s%c%s", s1 ? s1 : "(null)", '\0', s2 ? s2 : "(null)");
4835 g_assert (result == len - 1);
4842 * @klass: the class to initialize
4844 * Compute the instance_size, class_size and other infos that cannot be
4845 * computed at mono_class_get() time. Also compute vtable_size if possible.
4846 * Returns TRUE on success or FALSE if there was a problem in loading
4847 * the type (incorrect assemblies, missing assemblies, methods, etc).
4848 * Initializes the following fields in @klass:
4849 * - all the fields initialized by mono_class_init_sizes ()
4854 * LOCKING: Acquires the loader lock.
4857 mono_class_init (MonoClass *klass)
4859 int i, vtable_size = 0, array_method_count = 0;
4860 MonoCachedClassInfo cached_info;
4861 gboolean has_cached_info;
4862 gboolean locked = FALSE;
4863 gboolean ghcimpl = FALSE;
4864 gboolean has_cctor = FALSE;
4865 int first_iface_slot = 0;
4869 /* Double-checking locking pattern */
4870 if (klass->inited || mono_class_has_failure (klass))
4871 return !mono_class_has_failure (klass);
4873 /*g_print ("Init class %s\n", mono_type_get_full_name (klass));*/
4876 * This function can recursively call itself.
4878 GSList *init_list = (GSList *)mono_native_tls_get_value (init_pending_tls_id);
4879 if (g_slist_find (init_list, klass)) {
4880 mono_class_set_type_load_failure (klass, "Recursive type definition detected");
4883 init_list = g_slist_prepend (init_list, klass);
4884 mono_native_tls_set_value (init_pending_tls_id, init_list);
4887 * We want to avoid doing complicated work inside locks, so we compute all the required
4888 * information and write it to @klass inside a lock.
4891 if (mono_verifier_is_enabled_for_class (klass) && !mono_verifier_verify_class (klass)) {
4892 mono_class_set_type_load_failure (klass, "%s", concat_two_strings_with_zero (klass->image, klass->name, klass->image->assembly_name));
4896 if (klass->byval_arg.type == MONO_TYPE_ARRAY || klass->byval_arg.type == MONO_TYPE_SZARRAY) {
4897 MonoClass *element_class = klass->element_class;
4898 if (!element_class->inited)
4899 mono_class_init (element_class);
4900 if (mono_class_set_type_load_failure_causedby_class (klass, element_class, "Could not load array element class"))
4904 mono_stats.initialized_class_count++;
4906 if (mono_class_is_ginst (klass) && !mono_class_get_generic_class (klass)->is_dynamic) {
4907 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
4909 mono_class_init (gklass);
4910 if (mono_class_set_type_load_failure_causedby_class (klass, gklass, "Generic Type Definition failed to init"))
4913 mono_class_setup_interface_id (klass);
4916 if (klass->parent && !klass->parent->inited)
4917 mono_class_init (klass->parent);
4919 has_cached_info = mono_class_get_cached_class_info (klass, &cached_info);
4921 /* Compute instance size etc. */
4922 init_sizes_with_info (klass, has_cached_info ? &cached_info : NULL);
4923 if (mono_class_has_failure (klass))
4926 mono_class_setup_supertypes (klass);
4929 initialize_object_slots (klass);
4932 * Initialize the rest of the data without creating a generic vtable if possible.
4933 * If possible, also compute vtable_size, so mono_class_create_runtime_vtable () can
4934 * also avoid computing a generic vtable.
4936 if (has_cached_info) {
4938 vtable_size = cached_info.vtable_size;
4939 ghcimpl = cached_info.ghcimpl;
4940 has_cctor = cached_info.has_cctor;
4941 } else if (klass->rank == 1 && klass->byval_arg.type == MONO_TYPE_SZARRAY) {
4942 /* SZARRAY can have 2 vtable layouts, with and without the stelemref method.
4943 * The first slot if for array with.
4945 static int szarray_vtable_size[2] = { 0 };
4947 int slot = MONO_TYPE_IS_REFERENCE (&klass->element_class->byval_arg) ? 0 : 1;
4950 if (!szarray_vtable_size [slot]) {
4951 mono_class_setup_vtable (klass);
4952 szarray_vtable_size [slot] = klass->vtable_size;
4953 vtable_size = klass->vtable_size;
4955 vtable_size = szarray_vtable_size[slot];
4957 } else if (mono_class_is_ginst (klass) && !MONO_CLASS_IS_INTERFACE (klass)) {
4958 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
4960 /* Generic instance case */
4961 ghcimpl = gklass->ghcimpl;
4962 has_cctor = gklass->has_cctor;
4964 mono_class_setup_vtable (gklass);
4965 if (mono_class_set_type_load_failure_causedby_class (klass, gklass, "Generic type definition failed to init"))
4968 vtable_size = gklass->vtable_size;
4972 /* ghcimpl is not currently used
4974 if (klass->parent) {
4975 MonoMethod *cmethod = klass->vtable [ghc_slot];
4976 if (cmethod->is_inflated)
4977 cmethod = ((MonoMethodInflated*)cmethod)->declaring;
4978 if (cmethod == default_ghc) {
4984 /* C# doesn't allow interfaces to have cctors */
4985 if (!MONO_CLASS_IS_INTERFACE (klass) || klass->image != mono_defaults.corlib) {
4986 MonoMethod *cmethod = NULL;
4988 if (mono_class_is_ginst (klass)) {
4989 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
4991 /* Generic instance case */
4992 ghcimpl = gklass->ghcimpl;
4993 has_cctor = gklass->has_cctor;
4994 } else if (klass->type_token && !image_is_dynamic(klass->image)) {
4995 cmethod = find_method_in_metadata (klass, ".cctor", 0, METHOD_ATTRIBUTE_SPECIAL_NAME);
4996 /* The find_method function ignores the 'flags' argument */
4997 if (cmethod && (cmethod->flags & METHOD_ATTRIBUTE_SPECIAL_NAME))
5000 mono_class_setup_methods (klass);
5001 if (mono_class_has_failure (klass))
5004 int mcount = mono_class_get_method_count (klass);
5005 for (i = 0; i < mcount; ++i) {
5006 MonoMethod *method = klass->methods [i];
5007 if ((method->flags & METHOD_ATTRIBUTE_SPECIAL_NAME) &&
5008 (strcmp (".cctor", method->name) == 0)) {
5018 array_method_count = 3 + (klass->rank > 1? 2: 1);
5020 if (klass->interface_count) {
5021 int count_generic = generic_array_methods (klass);
5022 array_method_count += klass->interface_count * count_generic;
5026 if (klass->parent) {
5027 if (!klass->parent->vtable_size)
5028 mono_class_setup_vtable (klass->parent);
5029 if (mono_class_set_type_load_failure_causedby_class (klass, klass->parent, "Parent class vtable failed to initialize"))
5031 g_assert (klass->parent->vtable_size);
5032 first_iface_slot = klass->parent->vtable_size;
5033 if (mono_class_need_stelemref_method (klass))
5038 * Do the actual changes to @klass inside the loader lock
5040 mono_loader_lock ();
5043 if (klass->inited || mono_class_has_failure (klass)) {
5044 mono_loader_unlock ();
5045 /* Somebody might have gotten in before us */
5046 return !mono_class_has_failure (klass);
5049 mono_stats.initialized_class_count++;
5051 if (mono_class_is_ginst (klass) && !mono_class_get_generic_class (klass)->is_dynamic)
5052 mono_stats.generic_class_count++;
5054 if (mono_class_is_ginst (klass) || image_is_dynamic (klass->image) || !klass->type_token || (has_cached_info && !cached_info.has_nested_classes))
5055 klass->nested_classes_inited = TRUE;
5056 klass->ghcimpl = ghcimpl;
5057 klass->has_cctor = has_cctor;
5059 klass->vtable_size = vtable_size;
5060 if (has_cached_info) {
5061 klass->has_finalize = cached_info.has_finalize;
5062 klass->has_finalize_inited = TRUE;
5065 mono_class_set_method_count (klass, array_method_count);
5067 mono_loader_unlock ();
5070 setup_interface_offsets (klass, first_iface_slot, TRUE);
5072 if (mono_security_core_clr_enabled ())
5073 mono_security_core_clr_check_inheritance (klass);
5075 if (mono_class_is_ginst (klass) && !mono_verifier_class_is_valid_generic_instantiation (klass))
5076 mono_class_set_type_load_failure (klass, "Invalid generic instantiation");
5081 init_list = g_slist_remove (init_list, klass);
5082 mono_native_tls_set_value (init_pending_tls_id, init_list);
5084 /* Because of the double-checking locking pattern */
5085 mono_memory_barrier ();
5089 mono_loader_unlock ();
5091 return !mono_class_has_failure (klass);
5095 * mono_class_has_finalizer:
5097 * Return whenever KLASS has a finalizer, initializing klass->has_finalizer in the
5101 mono_class_has_finalizer (MonoClass *klass)
5103 gboolean has_finalize = FALSE;
5105 if (klass->has_finalize_inited)
5106 return klass->has_finalize;
5108 /* Interfaces and valuetypes are not supposed to have finalizers */
5109 if (!(MONO_CLASS_IS_INTERFACE (klass) || klass->valuetype)) {
5110 MonoMethod *cmethod = NULL;
5112 if (klass->rank == 1 && klass->byval_arg.type == MONO_TYPE_SZARRAY) {
5113 } else if (mono_class_is_ginst (klass)) {
5114 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
5116 has_finalize = mono_class_has_finalizer (gklass);
5117 } else if (klass->parent && klass->parent->has_finalize) {
5118 has_finalize = TRUE;
5120 if (klass->parent) {
5122 * Can't search in metadata for a method named Finalize, because that
5123 * ignores overrides.
5125 mono_class_setup_vtable (klass);
5126 if (mono_class_has_failure (klass))
5129 cmethod = klass->vtable [finalize_slot];
5133 g_assert (klass->vtable_size > finalize_slot);
5135 if (klass->parent) {
5136 if (cmethod->is_inflated)
5137 cmethod = ((MonoMethodInflated*)cmethod)->declaring;
5138 if (cmethod != default_finalize)
5139 has_finalize = TRUE;
5145 mono_image_lock (klass->image);
5147 if (!klass->has_finalize_inited) {
5148 klass->has_finalize = has_finalize ? 1 : 0;
5150 mono_memory_barrier ();
5151 klass->has_finalize_inited = TRUE;
5154 mono_image_unlock (klass->image);
5156 return klass->has_finalize;
5160 mono_is_corlib_image (MonoImage *image)
5162 return image == mono_defaults.corlib;
5166 * LOCKING: this assumes the loader lock is held
5169 mono_class_setup_mono_type (MonoClass *klass)
5171 const char *name = klass->name;
5172 const char *nspace = klass->name_space;
5173 gboolean is_corlib = mono_is_corlib_image (klass->image);
5175 klass->this_arg.byref = 1;
5176 klass->this_arg.data.klass = klass;
5177 klass->this_arg.type = MONO_TYPE_CLASS;
5178 klass->byval_arg.data.klass = klass;
5179 klass->byval_arg.type = MONO_TYPE_CLASS;
5181 if (is_corlib && !strcmp (nspace, "System")) {
5182 if (!strcmp (name, "ValueType")) {
5184 * do not set the valuetype bit for System.ValueType.
5185 * klass->valuetype = 1;
5187 klass->blittable = TRUE;
5188 } else if (!strcmp (name, "Enum")) {
5190 * do not set the valuetype bit for System.Enum.
5191 * klass->valuetype = 1;
5193 klass->valuetype = 0;
5194 klass->enumtype = 0;
5195 } else if (!strcmp (name, "Object")) {
5196 klass->byval_arg.type = MONO_TYPE_OBJECT;
5197 klass->this_arg.type = MONO_TYPE_OBJECT;
5198 } else if (!strcmp (name, "String")) {
5199 klass->byval_arg.type = MONO_TYPE_STRING;
5200 klass->this_arg.type = MONO_TYPE_STRING;
5201 } else if (!strcmp (name, "TypedReference")) {
5202 klass->byval_arg.type = MONO_TYPE_TYPEDBYREF;
5203 klass->this_arg.type = MONO_TYPE_TYPEDBYREF;
5207 if (klass->valuetype) {
5208 int t = MONO_TYPE_VALUETYPE;
5210 if (is_corlib && !strcmp (nspace, "System")) {
5213 if (!strcmp (name, "Boolean")) {
5214 t = MONO_TYPE_BOOLEAN;
5215 } else if (!strcmp(name, "Byte")) {
5217 klass->blittable = TRUE;
5221 if (!strcmp (name, "Char")) {
5226 if (!strcmp (name, "Double")) {
5228 klass->blittable = TRUE;
5232 if (!strcmp (name, "Int32")) {
5234 klass->blittable = TRUE;
5235 } else if (!strcmp(name, "Int16")) {
5237 klass->blittable = TRUE;
5238 } else if (!strcmp(name, "Int64")) {
5240 klass->blittable = TRUE;
5241 } else if (!strcmp(name, "IntPtr")) {
5243 klass->blittable = TRUE;
5247 if (!strcmp (name, "Single")) {
5249 klass->blittable = TRUE;
5250 } else if (!strcmp(name, "SByte")) {
5252 klass->blittable = TRUE;
5256 if (!strcmp (name, "UInt32")) {
5258 klass->blittable = TRUE;
5259 } else if (!strcmp(name, "UInt16")) {
5261 klass->blittable = TRUE;
5262 } else if (!strcmp(name, "UInt64")) {
5264 klass->blittable = TRUE;
5265 } else if (!strcmp(name, "UIntPtr")) {
5267 klass->blittable = TRUE;
5271 if (!strcmp (name, "TypedReference")) {
5272 t = MONO_TYPE_TYPEDBYREF;
5273 klass->blittable = TRUE;
5277 if (!strcmp (name, "Void")) {
5285 klass->byval_arg.type = (MonoTypeEnum)t;
5286 klass->this_arg.type = (MonoTypeEnum)t;
5289 if (MONO_CLASS_IS_INTERFACE (klass)) {
5290 klass->interface_id = mono_get_unique_iid (klass);
5292 if (is_corlib && !strcmp (nspace, "System.Collections.Generic")) {
5293 //FIXME IEnumerator needs to be special because GetEnumerator uses magic under the hood
5294 /* FIXME: System.Array/InternalEnumerator don't need all this interface fabrication machinery.
5295 * MS returns diferrent types based on which instance is called. For example:
5296 * object obj = new byte[10][];
5297 * Type a = ((IEnumerable<byte[]>)obj).GetEnumerator ().GetType ();
5298 * Type b = ((IEnumerable<IList<byte>>)obj).GetEnumerator ().GetType ();
5301 if (!strcmp (name, "IList`1") || !strcmp (name, "ICollection`1") || !strcmp (name, "IEnumerable`1") || !strcmp (name, "IEnumerator`1"))
5302 klass->is_array_special_interface = 1;
5309 * COM initialization is delayed until needed.
5310 * However when a [ComImport] attribute is present on a type it will trigger
5311 * the initialization. This is not a problem unless the BCL being executed
5312 * lacks the types that COM depends on (e.g. Variant on Silverlight).
5315 init_com_from_comimport (MonoClass *klass)
5317 /* we don't always allow COM initialization under the CoreCLR (e.g. Moonlight does not require it) */
5318 if (mono_security_core_clr_enabled ()) {
5319 /* but some other CoreCLR user could requires it for their platform (i.e. trusted) code */
5320 if (!mono_security_core_clr_determine_platform_image (klass->image)) {
5321 /* but it can not be made available for application (i.e. user code) since all COM calls
5322 * are considered native calls. In this case we fail with a TypeLoadException (just like
5323 * Silverlight 2 does */
5324 mono_class_set_type_load_failure (klass, "");
5329 /* FIXME : we should add an extra checks to ensure COM can be initialized properly before continuing */
5331 #endif /*DISABLE_COM*/
5334 * LOCKING: this assumes the loader lock is held
5337 mono_class_setup_parent (MonoClass *klass, MonoClass *parent)
5339 gboolean system_namespace;
5340 gboolean is_corlib = mono_is_corlib_image (klass->image);
5342 system_namespace = !strcmp (klass->name_space, "System") && is_corlib;
5344 /* if root of the hierarchy */
5345 if (system_namespace && !strcmp (klass->name, "Object")) {
5346 klass->parent = NULL;
5347 klass->instance_size = sizeof (MonoObject);
5350 if (!strcmp (klass->name, "<Module>")) {
5351 klass->parent = NULL;
5352 klass->instance_size = 0;
5356 if (!MONO_CLASS_IS_INTERFACE (klass)) {
5357 /* Imported COM Objects always derive from __ComObject. */
5359 if (MONO_CLASS_IS_IMPORT (klass)) {
5360 init_com_from_comimport (klass);
5361 if (parent == mono_defaults.object_class)
5362 parent = mono_class_get_com_object_class ();
5366 /* set the parent to something useful and safe, but mark the type as broken */
5367 parent = mono_defaults.object_class;
5368 mono_class_set_type_load_failure (klass, "");
5372 klass->parent = parent;
5374 if (mono_class_is_ginst (parent) && !parent->name) {
5376 * If the parent is a generic instance, we may get
5377 * called before it is fully initialized, especially
5378 * before it has its name.
5383 #ifndef DISABLE_REMOTING
5384 klass->marshalbyref = parent->marshalbyref;
5385 klass->contextbound = parent->contextbound;
5388 klass->delegate = parent->delegate;
5390 if (MONO_CLASS_IS_IMPORT (klass) || mono_class_is_com_object (parent))
5391 mono_class_set_is_com_object (klass);
5393 if (system_namespace) {
5394 #ifndef DISABLE_REMOTING
5395 if (klass->name [0] == 'M' && !strcmp (klass->name, "MarshalByRefObject"))
5396 klass->marshalbyref = 1;
5398 if (klass->name [0] == 'C' && !strcmp (klass->name, "ContextBoundObject"))
5399 klass->contextbound = 1;
5401 if (klass->name [0] == 'D' && !strcmp (klass->name, "Delegate"))
5402 klass->delegate = 1;
5405 if (klass->parent->enumtype || (mono_is_corlib_image (klass->parent->image) && (strcmp (klass->parent->name, "ValueType") == 0) &&
5406 (strcmp (klass->parent->name_space, "System") == 0)))
5407 klass->valuetype = 1;
5408 if (mono_is_corlib_image (klass->parent->image) && ((strcmp (klass->parent->name, "Enum") == 0) && (strcmp (klass->parent->name_space, "System") == 0))) {
5409 klass->valuetype = klass->enumtype = 1;
5411 /*klass->enumtype = klass->parent->enumtype; */
5413 /* initialize com types if COM interfaces are present */
5415 if (MONO_CLASS_IS_IMPORT (klass))
5416 init_com_from_comimport (klass);
5418 klass->parent = NULL;
5424 * mono_class_setup_supertypes:
5427 * Build the data structure needed to make fast type checks work.
5428 * This currently sets two fields in @class:
5429 * - idepth: distance between @class and System.Object in the type
5431 * - supertypes: array of classes: each element has a class in the hierarchy
5432 * starting from @class up to System.Object
5434 * LOCKING: Acquires the loader lock.
5437 mono_class_setup_supertypes (MonoClass *klass)
5440 MonoClass **supertypes;
5442 mono_atomic_load_acquire (supertypes, MonoClass **, &klass->supertypes);
5446 if (klass->parent && !klass->parent->supertypes)
5447 mono_class_setup_supertypes (klass->parent);
5449 idepth = klass->parent->idepth + 1;
5453 ms = MAX (MONO_DEFAULT_SUPERTABLE_SIZE, idepth);
5454 supertypes = (MonoClass **)mono_class_alloc0 (klass, sizeof (MonoClass *) * ms);
5456 if (klass->parent) {
5457 CHECKED_METADATA_WRITE_PTR ( supertypes [idepth - 1] , klass );
5460 for (supertype_idx = 0; supertype_idx < klass->parent->idepth; supertype_idx++)
5461 CHECKED_METADATA_WRITE_PTR ( supertypes [supertype_idx] , klass->parent->supertypes [supertype_idx] );
5463 CHECKED_METADATA_WRITE_PTR ( supertypes [0] , klass );
5466 mono_memory_barrier ();
5468 mono_loader_lock ();
5469 klass->idepth = idepth;
5470 /* Needed so idepth is visible before supertypes is set */
5471 mono_memory_barrier ();
5472 klass->supertypes = supertypes;
5473 mono_loader_unlock ();
5477 fix_gclass_incomplete_instantiation (MonoClass *gclass, void *user_data)
5479 MonoClass *gtd = (MonoClass*)user_data;
5480 /* Only try to fix generic instances of @gtd */
5481 if (mono_class_get_generic_class (gclass)->container_class != gtd)
5484 /* Check if the generic instance has no parent. */
5485 if (gtd->parent && !gclass->parent)
5486 mono_generic_class_setup_parent (gclass, gtd);
5492 mono_class_set_failure_and_error (MonoClass *klass, MonoError *error, const char *msg)
5494 mono_class_set_type_load_failure (klass, "%s", msg);
5495 mono_error_set_type_load_class (error, klass, "%s", msg);
5499 * mono_class_create_from_typedef:
5500 * @image: image where the token is valid
5501 * @type_token: typedef token
5502 * @error: used to return any error found while creating the type
5504 * Create the MonoClass* representing the specified type token.
5505 * @type_token must be a TypeDef token.
5507 * FIXME: don't return NULL on failure, just the the caller figure it out.
5510 mono_class_create_from_typedef (MonoImage *image, guint32 type_token, MonoError *error)
5512 MonoTableInfo *tt = &image->tables [MONO_TABLE_TYPEDEF];
5513 MonoClass *klass, *parent = NULL;
5514 guint32 cols [MONO_TYPEDEF_SIZE];
5515 guint32 cols_next [MONO_TYPEDEF_SIZE];
5516 guint tidx = mono_metadata_token_index (type_token);
5517 MonoGenericContext *context = NULL;
5518 const char *name, *nspace;
5520 MonoClass **interfaces;
5521 guint32 field_last, method_last;
5522 guint32 nesting_tokeen;
5524 mono_error_init (error);
5526 if (mono_metadata_token_table (type_token) != MONO_TABLE_TYPEDEF || tidx > tt->rows) {
5527 mono_error_set_bad_image (error, image, "Invalid typedef token %x", type_token);
5531 mono_loader_lock ();
5533 if ((klass = (MonoClass *)mono_internal_hash_table_lookup (&image->class_cache, GUINT_TO_POINTER (type_token)))) {
5534 mono_loader_unlock ();
5538 mono_metadata_decode_row (tt, tidx - 1, cols, MONO_TYPEDEF_SIZE);
5540 name = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
5541 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
5543 if (mono_metadata_has_generic_params (image, type_token)) {
5544 klass = mono_image_alloc0 (image, sizeof (MonoClassGtd));
5545 klass->class_kind = MONO_CLASS_GTD;
5546 classes_size += sizeof (MonoClassGtd);
5549 klass = mono_image_alloc0 (image, sizeof (MonoClassDef));
5550 klass->class_kind = MONO_CLASS_DEF;
5551 classes_size += sizeof (MonoClassDef);
5556 klass->name_space = nspace;
5558 mono_profiler_class_event (klass, MONO_PROFILE_START_LOAD);
5560 klass->image = image;
5561 klass->type_token = type_token;
5562 mono_class_set_flags (klass, cols [MONO_TYPEDEF_FLAGS]);
5564 mono_internal_hash_table_insert (&image->class_cache, GUINT_TO_POINTER (type_token), klass);
5567 * Check whether we're a generic type definition.
5569 if (mono_class_is_gtd (klass)) {
5570 MonoGenericContainer *generic_container = mono_metadata_load_generic_params (image, klass->type_token, NULL);
5571 generic_container->owner.klass = klass;
5572 generic_container->is_anonymous = FALSE; // Owner class is now known, container is no longer anonymous
5573 context = &generic_container->context;
5574 mono_class_set_generic_container (klass, generic_container);
5575 enable_gclass_recording ();
5578 if (cols [MONO_TYPEDEF_EXTENDS]) {
5580 guint32 parent_token = mono_metadata_token_from_dor (cols [MONO_TYPEDEF_EXTENDS]);
5582 if (mono_metadata_token_table (parent_token) == MONO_TABLE_TYPESPEC) {
5583 /*WARNING: this must satisfy mono_metadata_type_hash*/
5584 klass->this_arg.byref = 1;
5585 klass->this_arg.data.klass = klass;
5586 klass->this_arg.type = MONO_TYPE_CLASS;
5587 klass->byval_arg.data.klass = klass;
5588 klass->byval_arg.type = MONO_TYPE_CLASS;
5590 parent = mono_class_get_checked (image, parent_token, error);
5591 if (parent && context) /* Always inflate */
5592 parent = mono_class_inflate_generic_class_checked (parent, context, error);
5594 if (parent == NULL) {
5595 mono_class_set_type_load_failure (klass, "%s", mono_error_get_message (error));
5596 goto parent_failure;
5599 for (tmp = parent; tmp; tmp = tmp->parent) {
5601 mono_class_set_failure_and_error (klass, error, "Cycle found while resolving parent");
5602 goto parent_failure;
5604 if (mono_class_is_gtd (klass) && mono_class_is_ginst (tmp) && mono_class_get_generic_class (tmp)->container_class == klass) {
5605 mono_class_set_failure_and_error (klass, error, "Parent extends generic instance of this type");
5606 goto parent_failure;
5611 mono_class_setup_parent (klass, parent);
5613 /* uses ->valuetype, which is initialized by mono_class_setup_parent above */
5614 mono_class_setup_mono_type (klass);
5616 if (mono_class_is_gtd (klass))
5617 disable_gclass_recording (fix_gclass_incomplete_instantiation, klass);
5620 * This might access klass->byval_arg for recursion generated by generic constraints,
5621 * so it has to come after setup_mono_type ().
5623 if ((nesting_tokeen = mono_metadata_nested_in_typedef (image, type_token))) {
5624 klass->nested_in = mono_class_create_from_typedef (image, nesting_tokeen, error);
5625 if (!mono_error_ok (error)) {
5626 /*FIXME implement a mono_class_set_failure_from_mono_error */
5627 mono_class_set_type_load_failure (klass, "%s", mono_error_get_message (error));
5628 mono_loader_unlock ();
5629 mono_profiler_class_loaded (klass, MONO_PROFILE_FAILED);
5634 if ((mono_class_get_flags (klass) & TYPE_ATTRIBUTE_STRING_FORMAT_MASK) == TYPE_ATTRIBUTE_UNICODE_CLASS)
5638 if ((mono_class_get_flags (klass) & TYPE_ATTRIBUTE_STRING_FORMAT_MASK) == TYPE_ATTRIBUTE_AUTO_CLASS)
5642 klass->cast_class = klass->element_class = klass;
5643 if (mono_is_corlib_image (klass->image)) {
5644 switch (klass->byval_arg.type) {
5646 if (mono_defaults.byte_class)
5647 klass->cast_class = mono_defaults.byte_class;
5650 if (mono_defaults.sbyte_class)
5651 mono_defaults.sbyte_class = klass;
5654 if (mono_defaults.uint16_class)
5655 mono_defaults.uint16_class = klass;
5658 if (mono_defaults.int16_class)
5659 klass->cast_class = mono_defaults.int16_class;
5662 if (mono_defaults.uint32_class)
5663 mono_defaults.uint32_class = klass;
5666 if (mono_defaults.int32_class)
5667 klass->cast_class = mono_defaults.int32_class;
5670 if (mono_defaults.uint64_class)
5671 mono_defaults.uint64_class = klass;
5674 if (mono_defaults.int64_class)
5675 klass->cast_class = mono_defaults.int64_class;
5680 if (!klass->enumtype) {
5681 if (!mono_metadata_interfaces_from_typedef_full (
5682 image, type_token, &interfaces, &icount, FALSE, context, error)){
5684 mono_class_set_type_load_failure (klass, "%s", mono_error_get_message (error));
5685 mono_loader_unlock ();
5686 mono_profiler_class_loaded (klass, MONO_PROFILE_FAILED);
5690 /* This is required now that it is possible for more than 2^16 interfaces to exist. */
5691 g_assert(icount <= 65535);
5693 klass->interfaces = interfaces;
5694 klass->interface_count = icount;
5695 klass->interfaces_inited = 1;
5698 /*g_print ("Load class %s\n", name);*/
5701 * Compute the field and method lists
5703 int first_field_idx = cols [MONO_TYPEDEF_FIELD_LIST] - 1;
5704 mono_class_set_first_field_idx (klass, first_field_idx);
5705 int first_method_idx = cols [MONO_TYPEDEF_METHOD_LIST] - 1;
5706 mono_class_set_first_method_idx (klass, first_method_idx);
5708 if (tt->rows > tidx){
5709 mono_metadata_decode_row (tt, tidx, cols_next, MONO_TYPEDEF_SIZE);
5710 field_last = cols_next [MONO_TYPEDEF_FIELD_LIST] - 1;
5711 method_last = cols_next [MONO_TYPEDEF_METHOD_LIST] - 1;
5713 field_last = image->tables [MONO_TABLE_FIELD].rows;
5714 method_last = image->tables [MONO_TABLE_METHOD].rows;
5717 if (cols [MONO_TYPEDEF_FIELD_LIST] &&
5718 cols [MONO_TYPEDEF_FIELD_LIST] <= image->tables [MONO_TABLE_FIELD].rows)
5719 mono_class_set_field_count (klass, field_last - first_field_idx);
5720 if (cols [MONO_TYPEDEF_METHOD_LIST] <= image->tables [MONO_TABLE_METHOD].rows)
5721 mono_class_set_method_count (klass, method_last - first_method_idx);
5723 /* reserve space to store vector pointer in arrays */
5724 if (mono_is_corlib_image (image) && !strcmp (nspace, "System") && !strcmp (name, "Array")) {
5725 klass->instance_size += 2 * sizeof (gpointer);
5726 g_assert (mono_class_get_field_count (klass) == 0);
5729 if (klass->enumtype) {
5730 MonoType *enum_basetype = mono_class_find_enum_basetype (klass, error);
5731 if (!enum_basetype) {
5732 /*set it to a default value as the whole runtime can't handle this to be null*/
5733 klass->cast_class = klass->element_class = mono_defaults.int32_class;
5734 mono_class_set_type_load_failure (klass, "%s", mono_error_get_message (error));
5735 mono_loader_unlock ();
5736 mono_profiler_class_loaded (klass, MONO_PROFILE_FAILED);
5739 klass->cast_class = klass->element_class = mono_class_from_mono_type (enum_basetype);
5743 * If we're a generic type definition, load the constraints.
5744 * We must do this after the class has been constructed to make certain recursive scenarios
5747 if (mono_class_is_gtd (klass) && !mono_metadata_load_generic_param_constraints_checked (image, type_token, mono_class_get_generic_container (klass), error)) {
5748 mono_class_set_type_load_failure (klass, "Could not load generic parameter constrains due to %s", mono_error_get_message (error));
5749 mono_loader_unlock ();
5750 mono_profiler_class_loaded (klass, MONO_PROFILE_FAILED);
5754 if (klass->image->assembly_name && !strcmp (klass->image->assembly_name, "Mono.Simd") && !strcmp (nspace, "Mono.Simd")) {
5755 if (!strncmp (name, "Vector", 6))
5756 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");
5757 } else if (klass->image->assembly_name && !strcmp (klass->image->assembly_name, "System.Numerics") && !strcmp (nspace, "System.Numerics")) {
5758 if (!strcmp (name, "Vector2") || !strcmp (name, "Vector3") || !strcmp (name, "Vector4"))
5759 klass->simd_type = 1;
5762 mono_loader_unlock ();
5764 mono_profiler_class_loaded (klass, MONO_PROFILE_OK);
5769 mono_class_setup_mono_type (klass);
5770 mono_loader_unlock ();
5771 mono_profiler_class_loaded (klass, MONO_PROFILE_FAILED);
5775 /** Is klass a Nullable<T> ginst? */
5777 mono_class_is_nullable (MonoClass *klass)
5779 MonoGenericClass *gklass = mono_class_try_get_generic_class (klass);
5780 return gklass && gklass->container_class == mono_defaults.generic_nullable_class;
5784 /** if klass is T? return T */
5786 mono_class_get_nullable_param (MonoClass *klass)
5788 g_assert (mono_class_is_nullable (klass));
5789 return mono_class_from_mono_type (mono_class_get_generic_class (klass)->context.class_inst->type_argv [0]);
5793 mono_generic_class_setup_parent (MonoClass *klass, MonoClass *gtd)
5797 MonoGenericClass *gclass = mono_class_get_generic_class (klass);
5799 klass->parent = mono_class_inflate_generic_class_checked (gtd->parent, mono_generic_class_get_context (gclass), &error);
5800 if (!mono_error_ok (&error)) {
5801 /*Set parent to something safe as the runtime doesn't handle well this kind of failure.*/
5802 klass->parent = mono_defaults.object_class;
5803 mono_class_set_type_load_failure (klass, "Parent is a generic type instantiation that failed due to: %s", mono_error_get_message (&error));
5804 mono_error_cleanup (&error);
5808 mono_class_setup_parent (klass, klass->parent);
5810 if (klass->enumtype) {
5811 klass->cast_class = gtd->cast_class;
5812 klass->element_class = gtd->element_class;
5817 mono_type_is_primitive (MonoType *type)
5819 return (type->type >= MONO_TYPE_BOOLEAN && type->type <= MONO_TYPE_R8) ||
5820 type-> type == MONO_TYPE_I || type->type == MONO_TYPE_U;
5824 * Create the `MonoClass' for an instantiation of a generic type.
5825 * We only do this if we actually need it.
5828 mono_generic_class_get_class (MonoGenericClass *gclass)
5830 MonoClass *klass, *gklass;
5832 if (gclass->cached_class)
5833 return gclass->cached_class;
5835 klass = (MonoClass *)mono_image_set_alloc0 (gclass->owner, sizeof (MonoClassGenericInst));
5837 gklass = gclass->container_class;
5839 if (gklass->nested_in) {
5840 /* The nested_in type should not be inflated since it's possible to produce a nested type with less generic arguments*/
5841 klass->nested_in = gklass->nested_in;
5844 klass->name = gklass->name;
5845 klass->name_space = gklass->name_space;
5847 klass->image = gklass->image;
5848 klass->type_token = gklass->type_token;
5850 klass->class_kind = MONO_CLASS_GINST;
5852 ((MonoClassGenericInst*)klass)->generic_class = gclass;
5854 klass->byval_arg.type = MONO_TYPE_GENERICINST;
5855 klass->this_arg.type = klass->byval_arg.type;
5856 klass->this_arg.data.generic_class = klass->byval_arg.data.generic_class = gclass;
5857 klass->this_arg.byref = TRUE;
5858 klass->enumtype = gklass->enumtype;
5859 klass->valuetype = gklass->valuetype;
5862 if (gklass->image->assembly_name && !strcmp (gklass->image->assembly_name, "System.Numerics.Vectors") && !strcmp (gklass->name_space, "System.Numerics") && !strcmp (gklass->name, "Vector`1")) {
5863 g_assert (gclass->context.class_inst);
5864 g_assert (gclass->context.class_inst->type_argc > 0);
5865 if (mono_type_is_primitive (gclass->context.class_inst->type_argv [0]))
5866 klass->simd_type = 1;
5868 klass->is_array_special_interface = gklass->is_array_special_interface;
5870 klass->cast_class = klass->element_class = klass;
5872 if (gclass->is_dynamic) {
5874 * 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.
5875 * This is to avoid work that would probably give wrong results as fields change as we build the TypeBuilder.
5876 * See remove_instantiations_of_and_ensure_contents in reflection.c and its usage in reflection.c to understand the fixup stage of SRE banking.
5878 if (!gklass->wastypebuilder)
5881 if (klass->enumtype) {
5883 * For enums, gklass->fields might not been set, but instance_size etc. is
5884 * already set in mono_reflection_create_internal_class (). For non-enums,
5885 * these will be computed normally in mono_class_layout_fields ().
5887 klass->instance_size = gklass->instance_size;
5888 klass->sizes.class_size = gklass->sizes.class_size;
5889 klass->size_inited = 1;
5893 mono_loader_lock ();
5895 if (gclass->cached_class) {
5896 mono_loader_unlock ();
5897 return gclass->cached_class;
5900 if (record_gclass_instantiation > 0)
5901 gclass_recorded_list = g_slist_append (gclass_recorded_list, klass);
5903 if (mono_class_is_nullable (klass))
5904 klass->cast_class = klass->element_class = mono_class_get_nullable_param (klass);
5906 mono_profiler_class_event (klass, MONO_PROFILE_START_LOAD);
5908 mono_generic_class_setup_parent (klass, gklass);
5910 if (gclass->is_dynamic)
5911 mono_class_setup_supertypes (klass);
5913 mono_memory_barrier ();
5914 gclass->cached_class = klass;
5916 mono_profiler_class_loaded (klass, MONO_PROFILE_OK);
5918 ++class_ginst_count;
5919 inflated_classes_size += sizeof (MonoClassGenericInst);
5921 mono_loader_unlock ();
5927 get_image_for_container (MonoGenericContainer *container)
5930 if (container->is_anonymous) {
5931 result = container->owner.image;
5934 if (container->is_method) {
5935 MonoMethod *method = container->owner.method;
5936 g_assert_checked (method);
5937 klass = method->klass;
5939 klass = container->owner.klass;
5941 g_assert_checked (klass);
5942 result = klass->image;
5949 get_image_for_generic_param (MonoGenericParam *param)
5951 MonoGenericContainer *container = mono_generic_param_owner (param);
5952 g_assert_checked (container);
5953 return get_image_for_container (container);
5956 // Make a string in the designated image consisting of a single integer.
5957 #define INT_STRING_SIZE 16
5959 make_generic_name_string (MonoImage *image, int num)
5961 char *name = (char *)mono_image_alloc0 (image, INT_STRING_SIZE);
5962 g_snprintf (name, INT_STRING_SIZE, "%d", num);
5966 // This is called by mono_class_from_generic_parameter_internal when a new class must be created.
5967 // pinfo is derived from param by the caller for us.
5969 make_generic_param_class (MonoGenericParam *param, MonoGenericParamInfo *pinfo)
5971 MonoClass *klass, **ptr;
5973 MonoGenericContainer *container = mono_generic_param_owner (param);
5974 g_assert_checked (container);
5976 MonoImage *image = get_image_for_container (container);
5977 gboolean is_mvar = container->is_method;
5978 gboolean is_anonymous = container->is_anonymous;
5980 klass = (MonoClass *)mono_image_alloc0 (image, sizeof (MonoClassGenericParam));
5981 klass->class_kind = MONO_CLASS_GPARAM;
5982 classes_size += sizeof (MonoClassGenericParam);
5983 ++class_gparam_count;
5986 CHECKED_METADATA_WRITE_PTR_EXEMPT ( klass->name , pinfo->name );
5988 int n = mono_generic_param_num (param);
5989 CHECKED_METADATA_WRITE_PTR_LOCAL ( klass->name , make_generic_name_string (image, n) );
5993 CHECKED_METADATA_WRITE_PTR_EXEMPT ( klass->name_space , "" );
5994 } else if (is_mvar) {
5995 MonoMethod *omethod = container->owner.method;
5996 CHECKED_METADATA_WRITE_PTR_EXEMPT ( klass->name_space , (omethod && omethod->klass) ? omethod->klass->name_space : "" );
5998 MonoClass *oklass = container->owner.klass;
5999 CHECKED_METADATA_WRITE_PTR_EXEMPT ( klass->name_space , oklass ? oklass->name_space : "" );
6002 mono_profiler_class_event (klass, MONO_PROFILE_START_LOAD);
6004 // Count non-NULL items in pinfo->constraints
6007 for (ptr = pinfo->constraints; ptr && *ptr; ptr++, count++)
6011 if ((count > 0) && !MONO_CLASS_IS_INTERFACE (pinfo->constraints [0])) {
6012 CHECKED_METADATA_WRITE_PTR ( klass->parent , pinfo->constraints [0] );
6014 } else if (pinfo && pinfo->flags & GENERIC_PARAMETER_ATTRIBUTE_VALUE_TYPE_CONSTRAINT) {
6015 CHECKED_METADATA_WRITE_PTR ( klass->parent , mono_class_load_from_name (mono_defaults.corlib, "System", "ValueType") );
6017 CHECKED_METADATA_WRITE_PTR ( klass->parent , mono_defaults.object_class );
6020 if (count - pos > 0) {
6021 klass->interface_count = count - pos;
6022 CHECKED_METADATA_WRITE_PTR_LOCAL ( klass->interfaces , (MonoClass **)mono_image_alloc0 (image, sizeof (MonoClass *) * (count - pos)) );
6023 klass->interfaces_inited = TRUE;
6024 for (i = pos; i < count; i++)
6025 CHECKED_METADATA_WRITE_PTR ( klass->interfaces [i - pos] , pinfo->constraints [i] );
6028 CHECKED_METADATA_WRITE_PTR_EXEMPT ( klass->image , image );
6030 klass->inited = TRUE;
6031 CHECKED_METADATA_WRITE_PTR_LOCAL ( klass->cast_class , klass );
6032 CHECKED_METADATA_WRITE_PTR_LOCAL ( klass->element_class , klass );
6034 klass->byval_arg.type = is_mvar ? MONO_TYPE_MVAR : MONO_TYPE_VAR;
6035 klass->this_arg.type = klass->byval_arg.type;
6036 CHECKED_METADATA_WRITE_PTR ( klass->this_arg.data.generic_param , param );
6037 CHECKED_METADATA_WRITE_PTR ( klass->byval_arg.data.generic_param , param );
6038 klass->this_arg.byref = TRUE;
6040 /* We don't use type_token for VAR since only classes can use it (not arrays, pointer, VARs, etc) */
6041 klass->sizes.generic_param_token = pinfo ? pinfo->token : 0;
6043 /*Init these fields to sane values*/
6044 klass->min_align = 1;
6046 * This makes sure the the value size of this class is equal to the size of the types the gparam is
6047 * constrained to, the JIT depends on this.
6049 klass->instance_size = sizeof (MonoObject) + mono_type_stack_size_internal (&klass->byval_arg, NULL, TRUE);
6050 mono_memory_barrier ();
6051 klass->size_inited = 1;
6053 mono_class_setup_supertypes (klass);
6055 if (count - pos > 0) {
6056 mono_class_setup_vtable (klass->parent);
6057 if (mono_class_has_failure (klass->parent))
6058 mono_class_set_type_load_failure (klass, "Failed to setup parent interfaces");
6060 setup_interface_offsets (klass, klass->parent->vtable_size, TRUE);
6066 #define FAST_CACHE_SIZE 16
6069 * get_anon_gparam_class and set_anon_gparam_class are helpers for mono_class_from_generic_parameter_internal.
6070 * The latter will sometimes create MonoClasses for anonymous generic params. To prevent this being wasteful,
6071 * we cache the MonoClasses.
6072 * FIXME: It would be better to instead cache anonymous MonoGenericParams, and allow anonymous params to point directly to classes using the pklass field.
6073 * LOCKING: Takes the image lock depending on @take_lock.
6076 get_anon_gparam_class (MonoGenericParam *param, gboolean take_lock)
6078 int n = mono_generic_param_num (param);
6079 MonoImage *image = get_image_for_generic_param (param);
6080 gboolean is_mvar = mono_generic_param_owner (param)->is_method;
6081 MonoClass *klass = NULL;
6086 // For params with a small num and no constraints, we use a "fast" cache which does simple num lookup in an array.
6087 // For high numbers or constraints we have to use pointer hashes.
6088 if (param->gshared_constraint) {
6089 ht = is_mvar ? image->mvar_cache_constrained : image->var_cache_constrained;
6092 mono_image_lock (image);
6093 klass = (MonoClass *)g_hash_table_lookup (ht, param);
6095 mono_image_unlock (image);
6100 if (n < FAST_CACHE_SIZE) {
6102 return image->mvar_cache_fast ? image->mvar_cache_fast [n] : NULL;
6104 return image->var_cache_fast ? image->var_cache_fast [n] : NULL;
6106 ht = is_mvar ? image->mvar_cache_slow : image->var_cache_slow;
6109 mono_image_lock (image);
6110 klass = (MonoClass *)g_hash_table_lookup (ht, GINT_TO_POINTER (n));
6112 mono_image_unlock (image);
6119 * LOCKING: Image lock (param->image) must be held
6122 set_anon_gparam_class (MonoGenericParam *param, MonoClass *klass)
6124 int n = mono_generic_param_num (param);
6125 MonoImage *image = get_image_for_generic_param (param);
6126 gboolean is_mvar = mono_generic_param_owner (param)->is_method;
6130 if (param->gshared_constraint) {
6131 GHashTable *ht = is_mvar ? image->mvar_cache_constrained : image->var_cache_constrained;
6133 ht = g_hash_table_new ((GHashFunc)mono_metadata_generic_param_hash, (GEqualFunc)mono_metadata_generic_param_equal);
6134 mono_memory_barrier ();
6136 image->mvar_cache_constrained = ht;
6138 image->var_cache_constrained = ht;
6140 g_hash_table_insert (ht, param, klass);
6141 } else if (n < FAST_CACHE_SIZE) {
6143 /* Requires locking to avoid droping an already published class */
6144 if (!image->mvar_cache_fast)
6145 image->mvar_cache_fast = (MonoClass **)mono_image_alloc0 (image, sizeof (MonoClass*) * FAST_CACHE_SIZE);
6146 image->mvar_cache_fast [n] = klass;
6148 if (!image->var_cache_fast)
6149 image->var_cache_fast = (MonoClass **)mono_image_alloc0 (image, sizeof (MonoClass*) * FAST_CACHE_SIZE);
6150 image->var_cache_fast [n] = klass;
6153 GHashTable *ht = is_mvar ? image->mvar_cache_slow : image->var_cache_slow;
6155 ht = is_mvar ? image->mvar_cache_slow : image->var_cache_slow;
6157 ht = g_hash_table_new (NULL, NULL);
6158 mono_memory_barrier ();
6160 image->mvar_cache_slow = ht;
6162 image->var_cache_slow = ht;
6165 g_hash_table_insert (ht, GINT_TO_POINTER (n), klass);
6170 * LOCKING: Acquires the image lock (@image).
6173 mono_class_from_generic_parameter_internal (MonoGenericParam *param)
6175 MonoImage *image = get_image_for_generic_param (param);
6176 MonoGenericParamInfo *pinfo = mono_generic_param_info (param);
6177 MonoClass *klass, *klass2;
6179 // If a klass already exists for this object and is cached, return it.
6180 if (pinfo) // Non-anonymous
6181 klass = pinfo->pklass;
6183 klass = get_anon_gparam_class (param, TRUE);
6188 // Create a new klass
6189 klass = make_generic_param_class (param, pinfo);
6191 // Now we need to cache the klass we created.
6192 // But since we wait to grab the lock until after creating the klass, we need to check to make sure
6193 // another thread did not get in and cache a klass ahead of us. In that case, return their klass
6194 // and allow our newly-created klass object to just leak.
6195 mono_memory_barrier ();
6197 mono_image_lock (image);
6199 // Here "klass2" refers to the klass potentially created by the other thread.
6200 if (pinfo) // Repeat check from above
6201 klass2 = pinfo->pklass;
6203 klass2 = get_anon_gparam_class (param, FALSE);
6210 pinfo->pklass = klass;
6212 set_anon_gparam_class (param, klass);
6214 mono_image_unlock (image);
6216 /* FIXME: Should this go inside 'make_generic_param_klass'? */
6218 mono_profiler_class_loaded (klass2, MONO_PROFILE_FAILED); // Alert profiler about botched class create
6220 mono_profiler_class_loaded (klass, MONO_PROFILE_OK);
6226 * mono_class_from_generic_parameter:
6227 * @param: Parameter to find/construct a class for.
6228 * @arg2: Is ignored.
6229 * @arg3: Is ignored.
6232 mono_class_from_generic_parameter (MonoGenericParam *param, MonoImage *arg2 G_GNUC_UNUSED, gboolean arg3 G_GNUC_UNUSED)
6234 return mono_class_from_generic_parameter_internal (param);
6238 mono_ptr_class_get (MonoType *type)
6241 MonoClass *el_class;
6245 el_class = mono_class_from_mono_type (type);
6246 image = el_class->image;
6248 mono_image_lock (image);
6249 if (image->ptr_cache) {
6250 if ((result = (MonoClass *)g_hash_table_lookup (image->ptr_cache, el_class))) {
6251 mono_image_unlock (image);
6255 mono_image_unlock (image);
6257 result = (MonoClass *)mono_image_alloc0 (image, sizeof (MonoClassPointer));
6259 classes_size += sizeof (MonoClassPointer);
6260 ++class_pointer_count;
6262 result->parent = NULL; /* no parent for PTR types */
6263 result->name_space = el_class->name_space;
6264 name = g_strdup_printf ("%s*", el_class->name);
6265 result->name = mono_image_strdup (image, name);
6266 result->class_kind = MONO_CLASS_POINTER;
6269 mono_profiler_class_event (result, MONO_PROFILE_START_LOAD);
6271 result->image = el_class->image;
6272 result->inited = TRUE;
6273 result->instance_size = sizeof (MonoObject) + sizeof (gpointer);
6274 result->cast_class = result->element_class = el_class;
6275 result->blittable = TRUE;
6277 result->byval_arg.type = MONO_TYPE_PTR;
6278 result->this_arg.type = result->byval_arg.type;
6279 result->this_arg.data.type = result->byval_arg.data.type = &result->element_class->byval_arg;
6280 result->this_arg.byref = TRUE;
6282 mono_class_setup_supertypes (result);
6284 mono_image_lock (image);
6285 if (image->ptr_cache) {
6287 if ((result2 = (MonoClass *)g_hash_table_lookup (image->ptr_cache, el_class))) {
6288 mono_image_unlock (image);
6289 mono_profiler_class_loaded (result, MONO_PROFILE_FAILED);
6293 image->ptr_cache = g_hash_table_new (mono_aligned_addr_hash, NULL);
6295 g_hash_table_insert (image->ptr_cache, el_class, result);
6296 mono_image_unlock (image);
6298 mono_profiler_class_loaded (result, MONO_PROFILE_OK);
6304 mono_fnptr_class_get (MonoMethodSignature *sig)
6306 MonoClass *result, *cached;
6307 static GHashTable *ptr_hash = NULL;
6309 /* FIXME: These should be allocate from a mempool as well, but which one ? */
6311 mono_loader_lock ();
6313 ptr_hash = g_hash_table_new (mono_aligned_addr_hash, NULL);
6314 cached = (MonoClass *)g_hash_table_lookup (ptr_hash, sig);
6315 mono_loader_unlock ();
6319 result = g_new0 (MonoClass, 1);
6321 result->parent = NULL; /* no parent for PTR types */
6322 result->name_space = "System";
6323 result->name = "MonoFNPtrFakeClass";
6324 result->class_kind = MONO_CLASS_POINTER;
6326 result->image = mono_defaults.corlib; /* need to fix... */
6327 result->instance_size = sizeof (MonoObject) + sizeof (gpointer);
6328 result->cast_class = result->element_class = result;
6329 result->byval_arg.type = MONO_TYPE_FNPTR;
6330 result->this_arg.type = result->byval_arg.type;
6331 result->this_arg.data.method = result->byval_arg.data.method = sig;
6332 result->this_arg.byref = TRUE;
6333 result->blittable = TRUE;
6334 result->inited = TRUE;
6336 mono_class_setup_supertypes (result);
6338 mono_loader_lock ();
6340 cached = (MonoClass *)g_hash_table_lookup (ptr_hash, sig);
6343 mono_loader_unlock ();
6347 mono_profiler_class_event (result, MONO_PROFILE_START_LOAD);
6349 classes_size += sizeof (MonoClassPointer);
6350 ++class_pointer_count;
6352 g_hash_table_insert (ptr_hash, sig, result);
6354 mono_loader_unlock ();
6356 mono_profiler_class_loaded (result, MONO_PROFILE_OK);
6362 * mono_class_from_mono_type:
6363 * @type: describes the type to return
6365 * This returns a MonoClass for the specified MonoType, the value is never NULL.
6368 mono_class_from_mono_type (MonoType *type)
6370 switch (type->type) {
6371 case MONO_TYPE_OBJECT:
6372 return type->data.klass? type->data.klass: mono_defaults.object_class;
6373 case MONO_TYPE_VOID:
6374 return type->data.klass? type->data.klass: mono_defaults.void_class;
6375 case MONO_TYPE_BOOLEAN:
6376 return type->data.klass? type->data.klass: mono_defaults.boolean_class;
6377 case MONO_TYPE_CHAR:
6378 return type->data.klass? type->data.klass: mono_defaults.char_class;
6380 return type->data.klass? type->data.klass: mono_defaults.sbyte_class;
6382 return type->data.klass? type->data.klass: mono_defaults.byte_class;
6384 return type->data.klass? type->data.klass: mono_defaults.int16_class;
6386 return type->data.klass? type->data.klass: mono_defaults.uint16_class;
6388 return type->data.klass? type->data.klass: mono_defaults.int32_class;
6390 return type->data.klass? type->data.klass: mono_defaults.uint32_class;
6392 return type->data.klass? type->data.klass: mono_defaults.int_class;
6394 return type->data.klass? type->data.klass: mono_defaults.uint_class;
6396 return type->data.klass? type->data.klass: mono_defaults.int64_class;
6398 return type->data.klass? type->data.klass: mono_defaults.uint64_class;
6400 return type->data.klass? type->data.klass: mono_defaults.single_class;
6402 return type->data.klass? type->data.klass: mono_defaults.double_class;
6403 case MONO_TYPE_STRING:
6404 return type->data.klass? type->data.klass: mono_defaults.string_class;
6405 case MONO_TYPE_TYPEDBYREF:
6406 return type->data.klass? type->data.klass: mono_defaults.typed_reference_class;
6407 case MONO_TYPE_ARRAY:
6408 return mono_bounded_array_class_get (type->data.array->eklass, type->data.array->rank, TRUE);
6410 return mono_ptr_class_get (type->data.type);
6411 case MONO_TYPE_FNPTR:
6412 return mono_fnptr_class_get (type->data.method);
6413 case MONO_TYPE_SZARRAY:
6414 return mono_array_class_get (type->data.klass, 1);
6415 case MONO_TYPE_CLASS:
6416 case MONO_TYPE_VALUETYPE:
6417 return type->data.klass;
6418 case MONO_TYPE_GENERICINST:
6419 return mono_generic_class_get_class (type->data.generic_class);
6420 case MONO_TYPE_MVAR:
6422 return mono_class_from_generic_parameter_internal (type->data.generic_param);
6424 g_warning ("mono_class_from_mono_type: implement me 0x%02x\n", type->type);
6425 g_assert_not_reached ();
6428 // Yes, this returns NULL, even if it is documented as not doing so, but there
6429 // is no way for the code to make it this far, due to the assert above.
6434 * mono_type_retrieve_from_typespec
6435 * @image: context where the image is created
6436 * @type_spec: typespec token
6437 * @context: the generic context used to evaluate generic instantiations in
6440 mono_type_retrieve_from_typespec (MonoImage *image, guint32 type_spec, MonoGenericContext *context, gboolean *did_inflate, MonoError *error)
6442 MonoType *t = mono_type_create_from_typespec_checked (image, type_spec, error);
6444 *did_inflate = FALSE;
6449 if (context && (context->class_inst || context->method_inst)) {
6450 MonoType *inflated = inflate_generic_type (NULL, t, context, error);
6452 if (!mono_error_ok (error)) {
6458 *did_inflate = TRUE;
6465 * mono_class_create_from_typespec
6466 * @image: context where the image is created
6467 * @type_spec: typespec token
6468 * @context: the generic context used to evaluate generic instantiations in
6471 mono_class_create_from_typespec (MonoImage *image, guint32 type_spec, MonoGenericContext *context, MonoError *error)
6474 gboolean inflated = FALSE;
6475 MonoType *t = mono_type_retrieve_from_typespec (image, type_spec, context, &inflated, error);
6476 return_val_if_nok (error, NULL);
6477 ret = mono_class_from_mono_type (t);
6479 mono_metadata_free_type (t);
6484 * mono_bounded_array_class_get:
6485 * @element_class: element class
6486 * @rank: the dimension of the array class
6487 * @bounded: whenever the array has non-zero bounds
6489 * Returns: A class object describing the array with element type @element_type and
6493 mono_bounded_array_class_get (MonoClass *eclass, guint32 rank, gboolean bounded)
6496 MonoClass *klass, *cached, *k;
6497 MonoClass *parent = NULL;
6498 GSList *list, *rootlist = NULL;
6502 g_assert (rank <= 255);
6505 /* bounded only matters for one-dimensional arrays */
6508 image = eclass->image;
6512 if (rank == 1 && !bounded) {
6514 * This case is very frequent not just during compilation because of calls
6515 * from mono_class_from_mono_type (), mono_array_new (),
6516 * Array:CreateInstance (), etc, so use a separate cache + a separate lock.
6518 mono_os_mutex_lock (&image->szarray_cache_lock);
6519 if (!image->szarray_cache)
6520 image->szarray_cache = g_hash_table_new (mono_aligned_addr_hash, NULL);
6521 cached = (MonoClass *)g_hash_table_lookup (image->szarray_cache, eclass);
6522 mono_os_mutex_unlock (&image->szarray_cache_lock);
6524 mono_loader_lock ();
6525 if (!image->array_cache)
6526 image->array_cache = g_hash_table_new (mono_aligned_addr_hash, NULL);
6527 rootlist = (GSList *)g_hash_table_lookup (image->array_cache, eclass);
6528 for (list = rootlist; list; list = list->next) {
6529 k = (MonoClass *)list->data;
6530 if ((k->rank == rank) && (k->byval_arg.type == (((rank > 1) || bounded) ? MONO_TYPE_ARRAY : MONO_TYPE_SZARRAY))) {
6535 mono_loader_unlock ();
6540 parent = mono_defaults.array_class;
6541 if (!parent->inited)
6542 mono_class_init (parent);
6544 klass = (MonoClass *)mono_image_alloc0 (image, sizeof (MonoClassArray));
6546 klass->image = image;
6547 klass->name_space = eclass->name_space;
6548 klass->class_kind = MONO_CLASS_ARRAY;
6550 nsize = strlen (eclass->name);
6551 name = (char *)g_malloc (nsize + 2 + rank + 1);
6552 memcpy (name, eclass->name, nsize);
6555 memset (name + nsize + 1, ',', rank - 1);
6557 name [nsize + rank] = '*';
6558 name [nsize + rank + bounded] = ']';
6559 name [nsize + rank + bounded + 1] = 0;
6560 klass->name = mono_image_strdup (image, name);
6563 klass->type_token = 0;
6564 klass->parent = parent;
6565 klass->instance_size = mono_class_instance_size (klass->parent);
6567 if (eclass->byval_arg.type == MONO_TYPE_TYPEDBYREF || eclass->byval_arg.type == MONO_TYPE_VOID) {
6568 /*Arrays of those two types are invalid.*/
6569 MonoError prepared_error;
6570 mono_error_init (&prepared_error);
6571 mono_error_set_invalid_program (&prepared_error, "Arrays of void or System.TypedReference types are invalid.");
6572 mono_class_set_failure (klass, mono_error_box (&prepared_error, klass->image));
6573 mono_error_cleanup (&prepared_error);
6574 } else if (eclass->enumtype && !mono_class_enum_basetype (eclass)) {
6575 guint32 ref_info_handle = mono_class_get_ref_info_handle (eclass);
6576 if (!ref_info_handle || eclass->wastypebuilder) {
6577 g_warning ("Only incomplete TypeBuilder objects are allowed to be an enum without base_type");
6578 g_assert (ref_info_handle && !eclass->wastypebuilder);
6580 /* element_size -1 is ok as this is not an instantitable type*/
6581 klass->sizes.element_size = -1;
6583 klass->sizes.element_size = mono_class_array_element_size (eclass);
6585 mono_class_setup_supertypes (klass);
6587 if (mono_class_is_ginst (eclass))
6588 mono_class_init (eclass);
6589 if (!eclass->size_inited)
6590 mono_class_setup_fields (eclass);
6591 mono_class_set_type_load_failure_causedby_class (klass, eclass, "Could not load array element type");
6592 /*FIXME we fail the array type, but we have to let other fields be set.*/
6594 klass->has_references = MONO_TYPE_IS_REFERENCE (&eclass->byval_arg) || eclass->has_references? TRUE: FALSE;
6598 if (eclass->enumtype)
6599 klass->cast_class = eclass->element_class;
6601 klass->cast_class = eclass;
6603 switch (klass->cast_class->byval_arg.type) {
6605 klass->cast_class = mono_defaults.byte_class;
6608 klass->cast_class = mono_defaults.int16_class;
6611 #if SIZEOF_VOID_P == 4
6615 klass->cast_class = mono_defaults.int32_class;
6618 #if SIZEOF_VOID_P == 8
6622 klass->cast_class = mono_defaults.int64_class;
6628 klass->element_class = eclass;
6630 if ((rank > 1) || bounded) {
6631 MonoArrayType *at = (MonoArrayType *)mono_image_alloc0 (image, sizeof (MonoArrayType));
6632 klass->byval_arg.type = MONO_TYPE_ARRAY;
6633 klass->byval_arg.data.array = at;
6634 at->eklass = eclass;
6636 /* FIXME: complete.... */
6638 klass->byval_arg.type = MONO_TYPE_SZARRAY;
6639 klass->byval_arg.data.klass = eclass;
6641 klass->this_arg = klass->byval_arg;
6642 klass->this_arg.byref = 1;
6644 mono_loader_lock ();
6646 /* Check cache again */
6648 if (rank == 1 && !bounded) {
6649 mono_os_mutex_lock (&image->szarray_cache_lock);
6650 cached = (MonoClass *)g_hash_table_lookup (image->szarray_cache, eclass);
6651 mono_os_mutex_unlock (&image->szarray_cache_lock);
6653 rootlist = (GSList *)g_hash_table_lookup (image->array_cache, eclass);
6654 for (list = rootlist; list; list = list->next) {
6655 k = (MonoClass *)list->data;
6656 if ((k->rank == rank) && (k->byval_arg.type == (((rank > 1) || bounded) ? MONO_TYPE_ARRAY : MONO_TYPE_SZARRAY))) {
6663 mono_loader_unlock ();
6667 mono_profiler_class_event (klass, MONO_PROFILE_START_LOAD);
6669 classes_size += sizeof (MonoClassArray);
6670 ++class_array_count;
6672 if (rank == 1 && !bounded) {
6673 mono_os_mutex_lock (&image->szarray_cache_lock);
6674 g_hash_table_insert (image->szarray_cache, eclass, klass);
6675 mono_os_mutex_unlock (&image->szarray_cache_lock);
6677 list = g_slist_append (rootlist, klass);
6678 g_hash_table_insert (image->array_cache, eclass, list);
6681 mono_loader_unlock ();
6683 mono_profiler_class_loaded (klass, MONO_PROFILE_OK);
6689 * mono_array_class_get:
6690 * @element_class: element class
6691 * @rank: the dimension of the array class
6693 * Returns: A class object describing the array with element type @element_type and
6697 mono_array_class_get (MonoClass *eclass, guint32 rank)
6699 return mono_bounded_array_class_get (eclass, rank, FALSE);
6703 * mono_class_instance_size:
6706 * Use to get the size of a class in bytes.
6708 * Returns: The size of an object instance
6711 mono_class_instance_size (MonoClass *klass)
6713 if (!klass->size_inited)
6714 mono_class_init (klass);
6716 return klass->instance_size;
6720 * mono_class_min_align:
6723 * Use to get the computed minimum alignment requirements for the specified class.
6725 * Returns: minimum alignment requirements
6728 mono_class_min_align (MonoClass *klass)
6730 if (!klass->size_inited)
6731 mono_class_init (klass);
6733 return klass->min_align;
6737 * mono_class_value_size:
6740 * This function is used for value types, and return the
6741 * space and the alignment to store that kind of value object.
6743 * Returns: the size of a value of kind @klass
6746 mono_class_value_size (MonoClass *klass, guint32 *align)
6750 /* fixme: check disable, because we still have external revereces to
6751 * mscorlib and Dummy Objects
6753 /*g_assert (klass->valuetype);*/
6755 size = mono_class_instance_size (klass) - sizeof (MonoObject);
6758 *align = klass->min_align;
6764 * mono_class_data_size:
6767 * Returns: The size of the static class data
6770 mono_class_data_size (MonoClass *klass)
6773 mono_class_init (klass);
6774 /* This can happen with dynamically created types */
6775 if (!klass->fields_inited)
6776 mono_class_setup_fields (klass);
6778 /* in arrays, sizes.class_size is unioned with element_size
6779 * and arrays have no static fields
6783 return klass->sizes.class_size;
6787 * Auxiliary routine to mono_class_get_field
6789 * Takes a field index instead of a field token.
6791 static MonoClassField *
6792 mono_class_get_field_idx (MonoClass *klass, int idx)
6794 mono_class_setup_fields (klass);
6795 if (mono_class_has_failure (klass))
6799 int first_field_idx = mono_class_get_first_field_idx (klass);
6800 int fcount = mono_class_get_field_count (klass);
6801 if (klass->image->uncompressed_metadata) {
6803 * first_field_idx points to the FieldPtr table, while idx points into the
6804 * Field table, so we have to do a search.
6806 /*FIXME this is broken for types with multiple fields with the same name.*/
6807 const char *name = mono_metadata_string_heap (klass->image, mono_metadata_decode_row_col (&klass->image->tables [MONO_TABLE_FIELD], idx, MONO_FIELD_NAME));
6810 for (i = 0; i < fcount; ++i)
6811 if (mono_field_get_name (&klass->fields [i]) == name)
6812 return &klass->fields [i];
6813 g_assert_not_reached ();
6816 if ((idx >= first_field_idx) && (idx < first_field_idx + fcount)){
6817 return &klass->fields [idx - first_field_idx];
6821 klass = klass->parent;
6827 * mono_class_get_field:
6828 * @class: the class to lookup the field.
6829 * @field_token: the field token
6831 * Returns: A MonoClassField representing the type and offset of
6832 * the field, or a NULL value if the field does not belong to this
6836 mono_class_get_field (MonoClass *klass, guint32 field_token)
6838 int idx = mono_metadata_token_index (field_token);
6840 g_assert (mono_metadata_token_code (field_token) == MONO_TOKEN_FIELD_DEF);
6842 return mono_class_get_field_idx (klass, idx - 1);
6846 * mono_class_get_field_from_name:
6847 * @klass: the class to lookup the field.
6848 * @name: the field name
6850 * Search the class @klass and it's parents for a field with the name @name.
6852 * Returns: The MonoClassField pointer of the named field or NULL
6855 mono_class_get_field_from_name (MonoClass *klass, const char *name)
6857 return mono_class_get_field_from_name_full (klass, name, NULL);
6861 * mono_class_get_field_from_name_full:
6862 * @klass: the class to lookup the field.
6863 * @name: the field name
6864 * @type: the type of the fields. This optional.
6866 * Search the class @klass and it's parents for a field with the name @name and type @type.
6868 * If @klass is an inflated generic type, the type comparison is done with the equivalent field
6869 * of its generic type definition.
6871 * Returns: The MonoClassField pointer of the named field or NULL
6874 mono_class_get_field_from_name_full (MonoClass *klass, const char *name, MonoType *type)
6878 mono_class_setup_fields (klass);
6879 if (mono_class_has_failure (klass))
6883 int fcount = mono_class_get_field_count (klass);
6884 for (i = 0; i < fcount; ++i) {
6885 MonoClassField *field = &klass->fields [i];
6887 if (strcmp (name, mono_field_get_name (field)) != 0)
6891 MonoType *field_type = mono_metadata_get_corresponding_field_from_generic_type_definition (field)->type;
6892 if (!mono_metadata_type_equal_full (type, field_type, TRUE))
6897 klass = klass->parent;
6903 * mono_class_get_field_token:
6904 * @field: the field we need the token of
6906 * Get the token of a field. Note that the tokesn is only valid for the image
6907 * the field was loaded from. Don't use this function for fields in dynamic types.
6909 * Returns: The token representing the field in the image it was loaded from.
6912 mono_class_get_field_token (MonoClassField *field)
6914 MonoClass *klass = field->parent;
6917 mono_class_setup_fields (klass);
6922 int first_field_idx = mono_class_get_first_field_idx (klass);
6923 int fcount = mono_class_get_field_count (klass);
6924 for (i = 0; i < fcount; ++i) {
6925 if (&klass->fields [i] == field) {
6926 int idx = first_field_idx + i + 1;
6928 if (klass->image->uncompressed_metadata)
6929 idx = mono_metadata_translate_token_index (klass->image, MONO_TABLE_FIELD, idx);
6930 return mono_metadata_make_token (MONO_TABLE_FIELD, idx);
6933 klass = klass->parent;
6936 g_assert_not_reached ();
6941 mono_field_get_index (MonoClassField *field)
6943 int index = field - field->parent->fields;
6944 g_assert (index >= 0 && index < mono_class_get_field_count (field->parent));
6950 * mono_class_get_field_default_value:
6952 * Return the default value of the field as a pointer into the metadata blob.
6955 mono_class_get_field_default_value (MonoClassField *field, MonoTypeEnum *def_type)
6958 guint32 constant_cols [MONO_CONSTANT_SIZE];
6960 MonoClass *klass = field->parent;
6961 MonoFieldDefaultValue *def_values;
6963 g_assert (field->type->attrs & FIELD_ATTRIBUTE_HAS_DEFAULT);
6965 def_values = mono_class_get_field_def_values (klass);
6967 def_values = (MonoFieldDefaultValue *)mono_class_alloc0 (klass, sizeof (MonoFieldDefaultValue) * mono_class_get_field_count (klass));
6969 mono_class_set_field_def_values (klass, def_values);
6972 field_index = mono_field_get_index (field);
6974 if (!def_values [field_index].data) {
6975 cindex = mono_metadata_get_constant_index (field->parent->image, mono_class_get_field_token (field), 0);
6979 g_assert (!(field->type->attrs & FIELD_ATTRIBUTE_HAS_FIELD_RVA));
6981 mono_metadata_decode_row (&field->parent->image->tables [MONO_TABLE_CONSTANT], cindex - 1, constant_cols, MONO_CONSTANT_SIZE);
6982 def_values [field_index].def_type = (MonoTypeEnum)constant_cols [MONO_CONSTANT_TYPE];
6983 mono_memory_barrier ();
6984 def_values [field_index].data = (const char *)mono_metadata_blob_heap (field->parent->image, constant_cols [MONO_CONSTANT_VALUE]);
6987 *def_type = def_values [field_index].def_type;
6988 return def_values [field_index].data;
6992 mono_property_get_index (MonoProperty *prop)
6994 MonoClassPropertyInfo *info = mono_class_get_property_info (prop->parent);
6995 int index = prop - info->properties;
6997 g_assert (index >= 0 && index < info->count);
7003 * mono_class_get_property_default_value:
7005 * Return the default value of the field as a pointer into the metadata blob.
7008 mono_class_get_property_default_value (MonoProperty *property, MonoTypeEnum *def_type)
7011 guint32 constant_cols [MONO_CONSTANT_SIZE];
7012 MonoClass *klass = property->parent;
7014 g_assert (property->attrs & PROPERTY_ATTRIBUTE_HAS_DEFAULT);
7016 * We don't cache here because it is not used by C# so it's quite rare, but
7017 * we still do the lookup in klass->ext because that is where the data
7018 * is stored for dynamic assemblies.
7021 if (image_is_dynamic (klass->image)) {
7022 MonoClassPropertyInfo *info = mono_class_get_property_info (klass);
7023 int prop_index = mono_property_get_index (property);
7024 if (info->def_values && info->def_values [prop_index].data) {
7025 *def_type = info->def_values [prop_index].def_type;
7026 return info->def_values [prop_index].data;
7030 cindex = mono_metadata_get_constant_index (klass->image, mono_class_get_property_token (property), 0);
7034 mono_metadata_decode_row (&klass->image->tables [MONO_TABLE_CONSTANT], cindex - 1, constant_cols, MONO_CONSTANT_SIZE);
7035 *def_type = (MonoTypeEnum)constant_cols [MONO_CONSTANT_TYPE];
7036 return (const char *)mono_metadata_blob_heap (klass->image, constant_cols [MONO_CONSTANT_VALUE]);
7040 mono_class_get_event_token (MonoEvent *event)
7042 MonoClass *klass = event->parent;
7046 MonoClassEventInfo *info = mono_class_get_event_info (klass);
7048 for (i = 0; i < info->count; ++i) {
7049 if (&info->events [i] == event)
7050 return mono_metadata_make_token (MONO_TABLE_EVENT, info->first + i + 1);
7053 klass = klass->parent;
7056 g_assert_not_reached ();
7061 * mono_class_get_property_from_name:
7063 * @name: name of the property to lookup in the specified class
7065 * Use this method to lookup a property in a class
7066 * Returns: the MonoProperty with the given name, or NULL if the property
7067 * does not exist on the @klass.
7070 mono_class_get_property_from_name (MonoClass *klass, const char *name)
7074 gpointer iter = NULL;
7075 while ((p = mono_class_get_properties (klass, &iter))) {
7076 if (! strcmp (name, p->name))
7079 klass = klass->parent;
7085 * mono_class_get_property_token:
7086 * @prop: MonoProperty to query
7088 * Returns: The ECMA token for the specified property.
7091 mono_class_get_property_token (MonoProperty *prop)
7093 MonoClass *klass = prop->parent;
7097 gpointer iter = NULL;
7098 MonoClassPropertyInfo *info = mono_class_get_property_info (klass);
7099 while ((p = mono_class_get_properties (klass, &iter))) {
7100 if (&info->properties [i] == prop)
7101 return mono_metadata_make_token (MONO_TABLE_PROPERTY, info->first + i + 1);
7105 klass = klass->parent;
7108 g_assert_not_reached ();
7113 mono_class_name_from_token (MonoImage *image, guint32 type_token)
7115 const char *name, *nspace;
7116 if (image_is_dynamic (image))
7117 return g_strdup_printf ("DynamicType 0x%08x", type_token);
7119 switch (type_token & 0xff000000){
7120 case MONO_TOKEN_TYPE_DEF: {
7121 guint32 cols [MONO_TYPEDEF_SIZE];
7122 MonoTableInfo *tt = &image->tables [MONO_TABLE_TYPEDEF];
7123 guint tidx = mono_metadata_token_index (type_token);
7125 if (tidx > tt->rows)
7126 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
7128 mono_metadata_decode_row (tt, tidx - 1, cols, MONO_TYPEDEF_SIZE);
7129 name = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
7130 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
7131 if (strlen (nspace) == 0)
7132 return g_strdup_printf ("%s", name);
7134 return g_strdup_printf ("%s.%s", nspace, name);
7137 case MONO_TOKEN_TYPE_REF: {
7139 guint32 cols [MONO_TYPEREF_SIZE];
7140 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEREF];
7141 guint tidx = mono_metadata_token_index (type_token);
7144 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
7146 if (!mono_verifier_verify_typeref_row (image, tidx - 1, &error)) {
7147 char *msg = g_strdup_printf ("Invalid type token 0x%08x due to '%s'", type_token, mono_error_get_message (&error));
7148 mono_error_cleanup (&error);
7152 mono_metadata_decode_row (t, tidx-1, cols, MONO_TYPEREF_SIZE);
7153 name = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAME]);
7154 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAMESPACE]);
7155 if (strlen (nspace) == 0)
7156 return g_strdup_printf ("%s", name);
7158 return g_strdup_printf ("%s.%s", nspace, name);
7161 case MONO_TOKEN_TYPE_SPEC:
7162 return g_strdup_printf ("Typespec 0x%08x", type_token);
7164 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
7169 mono_assembly_name_from_token (MonoImage *image, guint32 type_token)
7171 if (image_is_dynamic (image))
7172 return g_strdup_printf ("DynamicAssembly %s", image->name);
7174 switch (type_token & 0xff000000){
7175 case MONO_TOKEN_TYPE_DEF:
7176 if (image->assembly)
7177 return mono_stringify_assembly_name (&image->assembly->aname);
7178 else if (image->assembly_name)
7179 return g_strdup (image->assembly_name);
7180 return g_strdup_printf ("%s", image->name ? image->name : "[Could not resolve assembly name");
7181 case MONO_TOKEN_TYPE_REF: {
7183 MonoAssemblyName aname;
7184 guint32 cols [MONO_TYPEREF_SIZE];
7185 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEREF];
7186 guint32 idx = mono_metadata_token_index (type_token);
7189 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
7191 if (!mono_verifier_verify_typeref_row (image, idx - 1, &error)) {
7192 char *msg = g_strdup_printf ("Invalid type token 0x%08x due to '%s'", type_token, mono_error_get_message (&error));
7193 mono_error_cleanup (&error);
7196 mono_metadata_decode_row (t, idx-1, cols, MONO_TYPEREF_SIZE);
7198 idx = cols [MONO_TYPEREF_SCOPE] >> MONO_RESOLUTION_SCOPE_BITS;
7199 switch (cols [MONO_TYPEREF_SCOPE] & MONO_RESOLUTION_SCOPE_MASK) {
7200 case MONO_RESOLUTION_SCOPE_MODULE:
7202 return g_strdup ("");
7203 case MONO_RESOLUTION_SCOPE_MODULEREF:
7205 return g_strdup ("");
7206 case MONO_RESOLUTION_SCOPE_TYPEREF:
7208 return g_strdup ("");
7209 case MONO_RESOLUTION_SCOPE_ASSEMBLYREF:
7210 mono_assembly_get_assemblyref (image, idx - 1, &aname);
7211 return mono_stringify_assembly_name (&aname);
7213 g_assert_not_reached ();
7217 case MONO_TOKEN_TYPE_SPEC:
7219 return g_strdup ("");
7221 g_assert_not_reached ();
7228 * mono_class_get_full:
7229 * @image: the image where the class resides
7230 * @type_token: the token for the class
7231 * @context: the generic context used to evaluate generic instantiations in
7232 * @deprecated: Functions that expose MonoGenericContext are going away in mono 4.0
7234 * Returns: The MonoClass that represents @type_token in @image
7237 mono_class_get_full (MonoImage *image, guint32 type_token, MonoGenericContext *context)
7241 klass = mono_class_get_checked (image, type_token, &error);
7243 if (klass && context && mono_metadata_token_table (type_token) == MONO_TABLE_TYPESPEC)
7244 klass = mono_class_inflate_generic_class_checked (klass, context, &error);
7246 g_assert (mono_error_ok (&error)); /* FIXME deprecate this function and forbit the runtime from using it. */
7252 mono_class_get_and_inflate_typespec_checked (MonoImage *image, guint32 type_token, MonoGenericContext *context, MonoError *error)
7256 mono_error_init (error);
7257 klass = mono_class_get_checked (image, type_token, error);
7259 if (klass && context && mono_metadata_token_table (type_token) == MONO_TABLE_TYPESPEC)
7260 klass = mono_class_inflate_generic_class_checked (klass, context, error);
7265 * mono_class_get_checked:
7266 * @image: the image where the class resides
7267 * @type_token: the token for the class
7268 * @error: error object to return any error
7270 * Returns: The MonoClass that represents @type_token in @image, or NULL on error.
7273 mono_class_get_checked (MonoImage *image, guint32 type_token, MonoError *error)
7275 MonoClass *klass = NULL;
7277 mono_error_init (error);
7279 if (image_is_dynamic (image)) {
7280 int table = mono_metadata_token_table (type_token);
7282 if (table != MONO_TABLE_TYPEDEF && table != MONO_TABLE_TYPEREF && table != MONO_TABLE_TYPESPEC) {
7283 mono_error_set_bad_image (error, image,"Bad token table for dynamic image: %x", table);
7286 klass = (MonoClass *)mono_lookup_dynamic_token (image, type_token, NULL, error);
7290 switch (type_token & 0xff000000){
7291 case MONO_TOKEN_TYPE_DEF:
7292 klass = mono_class_create_from_typedef (image, type_token, error);
7294 case MONO_TOKEN_TYPE_REF:
7295 klass = mono_class_from_typeref_checked (image, type_token, error);
7297 case MONO_TOKEN_TYPE_SPEC:
7298 klass = mono_class_create_from_typespec (image, type_token, NULL, error);
7301 mono_error_set_bad_image (error, image, "Unknown type token %x", type_token & 0xff000000);
7305 /* Generic case, should be avoided for when a better error is possible. */
7306 if (!klass && mono_error_ok (error)) {
7307 char *name = mono_class_name_from_token (image, type_token);
7308 char *assembly = mono_assembly_name_from_token (image, type_token);
7309 mono_error_set_type_load_name (error, name, assembly, "Could not resolve type with token %08x", type_token);
7317 * mono_type_get_checked:
7318 * @image: the image where the type resides
7319 * @type_token: the token for the type
7320 * @context: the generic context used to evaluate generic instantiations in
7321 * @error: Error handling context
7323 * This functions exists to fullfill the fact that sometimes it's desirable to have access to the
7325 * Returns: The MonoType that represents @type_token in @image
7328 mono_type_get_checked (MonoImage *image, guint32 type_token, MonoGenericContext *context, MonoError *error)
7330 MonoType *type = NULL;
7331 gboolean inflated = FALSE;
7333 mono_error_init (error);
7335 //FIXME: this will not fix the very issue for which mono_type_get_full exists -but how to do it then?
7336 if (image_is_dynamic (image)) {
7337 MonoClass *klass = (MonoClass *)mono_lookup_dynamic_token (image, type_token, context, error);
7338 return_val_if_nok (error, NULL);
7339 return mono_class_get_type (klass);
7342 if ((type_token & 0xff000000) != MONO_TOKEN_TYPE_SPEC) {
7343 MonoClass *klass = mono_class_get_checked (image, type_token, error);
7350 return mono_class_get_type (klass);
7353 type = mono_type_retrieve_from_typespec (image, type_token, context, &inflated, error);
7360 MonoType *tmp = type;
7361 type = mono_class_get_type (mono_class_from_mono_type (type));
7362 /* FIXME: This is a workaround fo the fact that a typespec token sometimes reference to the generic type definition.
7363 * A MonoClass::byval_arg of a generic type definion has type CLASS.
7364 * Some parts of mono create a GENERICINST to reference a generic type definition and this generates confict with byval_arg.
7366 * The long term solution is to chaise this places and make then set MonoType::type correctly.
7368 if (type->type != tmp->type)
7371 mono_metadata_free_type (tmp);
7378 * @image: image where the class token will be looked up.
7379 * @type_token: a type token from the image
7381 * Returns the MonoClass with the given @type_token on the @image
7384 mono_class_get (MonoImage *image, guint32 type_token)
7386 return mono_class_get_full (image, type_token, NULL);
7390 * mono_image_init_name_cache:
7392 * Initializes the class name cache stored in image->name_cache.
7394 * LOCKING: Acquires the corresponding image lock.
7397 mono_image_init_name_cache (MonoImage *image)
7399 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEDEF];
7400 guint32 cols [MONO_TYPEDEF_SIZE];
7403 guint32 i, visib, nspace_index;
7404 GHashTable *name_cache2, *nspace_table, *the_name_cache;
7406 if (image->name_cache)
7409 the_name_cache = g_hash_table_new (g_str_hash, g_str_equal);
7411 if (image_is_dynamic (image)) {
7412 mono_image_lock (image);
7413 if (image->name_cache) {
7414 /* Somebody initialized it before us */
7415 g_hash_table_destroy (the_name_cache);
7417 mono_atomic_store_release (&image->name_cache, the_name_cache);
7419 mono_image_unlock (image);
7423 /* Temporary hash table to avoid lookups in the nspace_table */
7424 name_cache2 = g_hash_table_new (NULL, NULL);
7426 for (i = 1; i <= t->rows; ++i) {
7427 mono_metadata_decode_row (t, i - 1, cols, MONO_TYPEDEF_SIZE);
7428 visib = cols [MONO_TYPEDEF_FLAGS] & TYPE_ATTRIBUTE_VISIBILITY_MASK;
7430 * Nested types are accessed from the nesting name. We use the fact that nested types use different visibility flags
7431 * than toplevel types, thus avoiding the need to grovel through the NESTED_TYPE table
7433 if (visib >= TYPE_ATTRIBUTE_NESTED_PUBLIC && visib <= TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM)
7435 name = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
7436 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
7438 nspace_index = cols [MONO_TYPEDEF_NAMESPACE];
7439 nspace_table = (GHashTable *)g_hash_table_lookup (name_cache2, GUINT_TO_POINTER (nspace_index));
7440 if (!nspace_table) {
7441 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
7442 g_hash_table_insert (the_name_cache, (char*)nspace, nspace_table);
7443 g_hash_table_insert (name_cache2, GUINT_TO_POINTER (nspace_index),
7446 g_hash_table_insert (nspace_table, (char *) name, GUINT_TO_POINTER (i));
7449 /* Load type names from EXPORTEDTYPES table */
7451 MonoTableInfo *t = &image->tables [MONO_TABLE_EXPORTEDTYPE];
7452 guint32 cols [MONO_EXP_TYPE_SIZE];
7455 for (i = 0; i < t->rows; ++i) {
7456 mono_metadata_decode_row (t, i, cols, MONO_EXP_TYPE_SIZE);
7458 guint32 impl = cols [MONO_EXP_TYPE_IMPLEMENTATION];
7459 if ((impl & MONO_IMPLEMENTATION_MASK) == MONO_IMPLEMENTATION_EXP_TYPE)
7463 name = mono_metadata_string_heap (image, cols [MONO_EXP_TYPE_NAME]);
7464 nspace = mono_metadata_string_heap (image, cols [MONO_EXP_TYPE_NAMESPACE]);
7466 nspace_index = cols [MONO_EXP_TYPE_NAMESPACE];
7467 nspace_table = (GHashTable *)g_hash_table_lookup (name_cache2, GUINT_TO_POINTER (nspace_index));
7468 if (!nspace_table) {
7469 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
7470 g_hash_table_insert (the_name_cache, (char*)nspace, nspace_table);
7471 g_hash_table_insert (name_cache2, GUINT_TO_POINTER (nspace_index),
7474 g_hash_table_insert (nspace_table, (char *) name, GUINT_TO_POINTER (mono_metadata_make_token (MONO_TABLE_EXPORTEDTYPE, i + 1)));
7478 g_hash_table_destroy (name_cache2);
7480 mono_image_lock (image);
7481 if (image->name_cache) {
7482 /* Somebody initialized it before us */
7483 g_hash_table_destroy (the_name_cache);
7485 mono_atomic_store_release (&image->name_cache, the_name_cache);
7487 mono_image_unlock (image);
7490 /*FIXME Only dynamic assemblies should allow this operation.*/
7492 mono_image_add_to_name_cache (MonoImage *image, const char *nspace,
7493 const char *name, guint32 index)
7495 GHashTable *nspace_table;
7496 GHashTable *name_cache;
7499 mono_image_init_name_cache (image);
7500 mono_image_lock (image);
7502 name_cache = image->name_cache;
7503 if (!(nspace_table = (GHashTable *)g_hash_table_lookup (name_cache, nspace))) {
7504 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
7505 g_hash_table_insert (name_cache, (char *)nspace, (char *)nspace_table);
7508 if ((old_index = GPOINTER_TO_UINT (g_hash_table_lookup (nspace_table, (char*) name))))
7509 g_error ("overrwritting old token %x on image %s for type %s::%s", old_index, image->name, nspace, name);
7511 g_hash_table_insert (nspace_table, (char *) name, GUINT_TO_POINTER (index));
7513 mono_image_unlock (image);
7522 find_nocase (gpointer key, gpointer value, gpointer user_data)
7524 char *name = (char*)key;
7525 FindUserData *data = (FindUserData*)user_data;
7527 if (!data->value && (mono_utf8_strcasecmp (name, (char*)data->key) == 0))
7528 data->value = value;
7532 * mono_class_from_name_case:
7533 * @image: The MonoImage where the type is looked up in
7534 * @name_space: the type namespace
7535 * @name: the type short name.
7536 * @deprecated: use the mono_class_from_name_case_checked variant instead.
7538 * Obtains a MonoClass with a given namespace and a given name which
7539 * is located in the given MonoImage. The namespace and name
7540 * lookups are case insensitive.
7543 mono_class_from_name_case (MonoImage *image, const char* name_space, const char *name)
7546 MonoClass *res = mono_class_from_name_case_checked (image, name_space, name, &error);
7547 mono_error_cleanup (&error);
7553 * mono_class_from_name_case:
7554 * @image: The MonoImage where the type is looked up in
7555 * @name_space: the type namespace
7556 * @name: the type short name.
7559 * Obtains a MonoClass with a given namespace and a given name which
7560 * is located in the given MonoImage. The namespace and name
7561 * lookups are case insensitive.
7563 * Returns: The MonoClass if the given namespace and name were found, or NULL if it
7564 * was not found. The @error object will contain information about the problem
7568 mono_class_from_name_case_checked (MonoImage *image, const char *name_space, const char *name, MonoError *error)
7570 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEDEF];
7571 guint32 cols [MONO_TYPEDEF_SIZE];
7576 mono_error_init (error);
7578 if (image_is_dynamic (image)) {
7580 FindUserData user_data;
7582 mono_image_init_name_cache (image);
7583 mono_image_lock (image);
7585 user_data.key = name_space;
7586 user_data.value = NULL;
7587 g_hash_table_foreach (image->name_cache, find_nocase, &user_data);
7589 if (user_data.value) {
7590 GHashTable *nspace_table = (GHashTable*)user_data.value;
7592 user_data.key = name;
7593 user_data.value = NULL;
7595 g_hash_table_foreach (nspace_table, find_nocase, &user_data);
7597 if (user_data.value)
7598 token = GPOINTER_TO_UINT (user_data.value);
7601 mono_image_unlock (image);
7604 return mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | token, error);
7610 /* add a cache if needed */
7611 for (i = 1; i <= t->rows; ++i) {
7612 mono_metadata_decode_row (t, i - 1, cols, MONO_TYPEDEF_SIZE);
7613 visib = cols [MONO_TYPEDEF_FLAGS] & TYPE_ATTRIBUTE_VISIBILITY_MASK;
7615 * Nested types are accessed from the nesting name. We use the fact that nested types use different visibility flags
7616 * than toplevel types, thus avoiding the need to grovel through the NESTED_TYPE table
7618 if (visib >= TYPE_ATTRIBUTE_NESTED_PUBLIC && visib <= TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM)
7620 n = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
7621 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
7622 if (mono_utf8_strcasecmp (n, name) == 0 && mono_utf8_strcasecmp (nspace, name_space) == 0)
7623 return mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | i, error);
7629 return_nested_in (MonoClass *klass, char *nested)
7632 char *s = strchr (nested, '/');
7633 gpointer iter = NULL;
7640 while ((found = mono_class_get_nested_types (klass, &iter))) {
7641 if (strcmp (found->name, nested) == 0) {
7643 return return_nested_in (found, s);
7651 search_modules (MonoImage *image, const char *name_space, const char *name, MonoError *error)
7653 MonoTableInfo *file_table = &image->tables [MONO_TABLE_FILE];
7654 MonoImage *file_image;
7658 mono_error_init (error);
7661 * The EXPORTEDTYPES table only contains public types, so have to search the
7663 * Note: image->modules contains the contents of the MODULEREF table, while
7664 * the real module list is in the FILE table.
7666 for (i = 0; i < file_table->rows; i++) {
7667 guint32 cols [MONO_FILE_SIZE];
7668 mono_metadata_decode_row (file_table, i, cols, MONO_FILE_SIZE);
7669 if (cols [MONO_FILE_FLAGS] == FILE_CONTAINS_NO_METADATA)
7672 file_image = mono_image_load_file_for_image_checked (image, i + 1, error);
7674 klass = mono_class_from_name_checked (file_image, name_space, name, error);
7675 if (klass || !is_ok (error))
7684 mono_class_from_name_checked_aux (MonoImage *image, const char* name_space, const char *name, GHashTable* visited_images, MonoError *error)
7686 GHashTable *nspace_table;
7687 MonoImage *loaded_image;
7694 mono_error_init (error);
7696 // Checking visited images avoids stack overflows when cyclic references exist.
7697 if (g_hash_table_lookup (visited_images, image))
7700 g_hash_table_insert (visited_images, image, GUINT_TO_POINTER(1));
7702 if ((nested = strchr (name, '/'))) {
7703 int pos = nested - name;
7704 int len = strlen (name);
7707 memcpy (buf, name, len + 1);
7709 nested = buf + pos + 1;
7713 /* FIXME: get_class_from_name () can't handle types in the EXPORTEDTYPE table */
7714 if (get_class_from_name && image->tables [MONO_TABLE_EXPORTEDTYPE].rows == 0) {
7715 gboolean res = get_class_from_name (image, name_space, name, &klass);
7718 klass = search_modules (image, name_space, name, error);
7723 return klass ? return_nested_in (klass, nested) : NULL;
7729 mono_image_init_name_cache (image);
7730 mono_image_lock (image);
7732 nspace_table = (GHashTable *)g_hash_table_lookup (image->name_cache, name_space);
7735 token = GPOINTER_TO_UINT (g_hash_table_lookup (nspace_table, name));
7737 mono_image_unlock (image);
7739 if (!token && image_is_dynamic (image) && image->modules) {
7740 /* Search modules as well */
7741 for (i = 0; i < image->module_count; ++i) {
7742 MonoImage *module = image->modules [i];
7744 klass = mono_class_from_name_checked (module, name_space, name, error);
7745 if (klass || !is_ok (error))
7751 klass = search_modules (image, name_space, name, error);
7752 if (klass || !is_ok (error))
7757 if (mono_metadata_token_table (token) == MONO_TABLE_EXPORTEDTYPE) {
7758 MonoTableInfo *t = &image->tables [MONO_TABLE_EXPORTEDTYPE];
7759 guint32 cols [MONO_EXP_TYPE_SIZE];
7762 idx = mono_metadata_token_index (token);
7764 mono_metadata_decode_row (t, idx - 1, cols, MONO_EXP_TYPE_SIZE);
7766 impl = cols [MONO_EXP_TYPE_IMPLEMENTATION];
7767 if ((impl & MONO_IMPLEMENTATION_MASK) == MONO_IMPLEMENTATION_FILE) {
7768 loaded_image = mono_assembly_load_module_checked (image->assembly, impl >> MONO_IMPLEMENTATION_BITS, error);
7771 klass = mono_class_from_name_checked_aux (loaded_image, name_space, name, visited_images, error);
7773 return klass ? return_nested_in (klass, nested) : NULL;
7775 } else if ((impl & MONO_IMPLEMENTATION_MASK) == MONO_IMPLEMENTATION_ASSEMBLYREF) {
7776 guint32 assembly_idx;
7778 assembly_idx = impl >> MONO_IMPLEMENTATION_BITS;
7780 mono_assembly_load_reference (image, assembly_idx - 1);
7781 g_assert (image->references [assembly_idx - 1]);
7782 if (image->references [assembly_idx - 1] == (gpointer)-1)
7784 klass = mono_class_from_name_checked_aux (image->references [assembly_idx - 1]->image, name_space, name, visited_images, error);
7786 return klass ? return_nested_in (klass, nested) : NULL;
7789 g_assert_not_reached ();
7793 token = MONO_TOKEN_TYPE_DEF | token;
7795 klass = mono_class_get_checked (image, token, error);
7797 return return_nested_in (klass, nested);
7802 * mono_class_from_name_checked:
7803 * @image: The MonoImage where the type is looked up in
7804 * @name_space: the type namespace
7805 * @name: the type short name.
7807 * Obtains a MonoClass with a given namespace and a given name which
7808 * is located in the given MonoImage.
7810 * Works like mono_class_from_name, but error handling is tricky. It can return NULL and have no error
7811 * set if the class was not found or it will return NULL and set the error if there was a loading error.
7814 mono_class_from_name_checked (MonoImage *image, const char* name_space, const char *name, MonoError *error)
7817 GHashTable *visited_images;
7819 visited_images = g_hash_table_new (g_direct_hash, g_direct_equal);
7821 klass = mono_class_from_name_checked_aux (image, name_space, name, visited_images, error);
7823 g_hash_table_destroy (visited_images);
7829 * mono_class_from_name:
7830 * @image: The MonoImage where the type is looked up in
7831 * @name_space: the type namespace
7832 * @name: the type short name.
7834 * Obtains a MonoClass with a given namespace and a given name which
7835 * is located in the given MonoImage.
7837 * To reference nested classes, use the "/" character as a separator.
7838 * For example use "Foo/Bar" to reference the class Bar that is nested
7839 * inside Foo, like this: "class Foo { class Bar {} }".
7842 mono_class_from_name (MonoImage *image, const char* name_space, const char *name)
7847 klass = mono_class_from_name_checked (image, name_space, name, &error);
7848 mono_error_cleanup (&error); /* FIXME Don't swallow the error */
7854 * mono_class_load_from_name:
7855 * @image: The MonoImage where the type is looked up in
7856 * @name_space: the type namespace
7857 * @name: the type short name.
7859 * This function works exactly like mono_class_from_name but it will abort if the class is not found.
7860 * This function should be used by the runtime for critical types to which there's no way to recover but crash
7861 * If they are missing. Thing of System.Object or System.String.
7864 mono_class_load_from_name (MonoImage *image, const char* name_space, const char *name)
7869 klass = mono_class_from_name_checked (image, name_space, name, &error);
7871 g_error ("Runtime critical type %s.%s not found", name_space, name);
7872 if (!mono_error_ok (&error))
7873 g_error ("Could not load runtime critical type %s.%s due to %s", name_space, name, mono_error_get_message (&error));
7878 * mono_class_try_load_from_name:
7879 * @image: The MonoImage where the type is looked up in
7880 * @name_space: the type namespace
7881 * @name: the type short name.
7883 * This function tries to load a type, returning the class was found or NULL otherwise.
7884 * This function should be used by the runtime when probing for optional types, those that could have being linked out.
7886 * Big design consideration. This function aborts if there was an error loading the type. This prevents us from missing
7887 * a type that we would otherwise assume to be available but was not due some error.
7891 mono_class_try_load_from_name (MonoImage *image, const char* name_space, const char *name)
7896 klass = mono_class_from_name_checked (image, name_space, name, &error);
7897 if (!mono_error_ok (&error))
7898 g_error ("Could not load runtime critical type %s.%s due to %s", name_space, name, mono_error_get_message (&error));
7904 * mono_class_is_subclass_of:
7905 * @klass: class to probe if it is a subclass of another one
7906 * @klassc: the class we suspect is the base class
7907 * @check_interfaces: whether we should perform interface checks
7909 * This method determines whether @klass is a subclass of @klassc.
7911 * If the @check_interfaces flag is set, then if @klassc is an interface
7912 * this method return TRUE if the @klass implements the interface or
7913 * if @klass is an interface, if one of its base classes is @klass.
7915 * If @check_interfaces is false then, then if @klass is not an interface
7916 * then it returns TRUE if the @klass is a subclass of @klassc.
7918 * if @klass is an interface and @klassc is System.Object, then this function
7923 mono_class_is_subclass_of (MonoClass *klass, MonoClass *klassc,
7924 gboolean check_interfaces)
7926 /* FIXME test for interfaces with variant generic arguments */
7927 mono_class_init (klass);
7928 mono_class_init (klassc);
7930 if (check_interfaces && MONO_CLASS_IS_INTERFACE (klassc) && !MONO_CLASS_IS_INTERFACE (klass)) {
7931 if (MONO_CLASS_IMPLEMENTS_INTERFACE (klass, klassc->interface_id))
7933 } else if (check_interfaces && MONO_CLASS_IS_INTERFACE (klassc) && MONO_CLASS_IS_INTERFACE (klass)) {
7936 for (i = 0; i < klass->interface_count; i ++) {
7937 MonoClass *ic = klass->interfaces [i];
7942 if (!MONO_CLASS_IS_INTERFACE (klass) && mono_class_has_parent (klass, klassc))
7947 * MS.NET thinks interfaces are a subclass of Object, so we think it as
7950 if (klassc == mono_defaults.object_class)
7957 mono_type_is_generic_argument (MonoType *type)
7959 return type->type == MONO_TYPE_VAR || type->type == MONO_TYPE_MVAR;
7963 mono_class_has_variant_generic_params (MonoClass *klass)
7966 MonoGenericContainer *container;
7968 if (!mono_class_is_ginst (klass))
7971 container = mono_class_get_generic_container (mono_class_get_generic_class (klass)->container_class);
7973 for (i = 0; i < container->type_argc; ++i)
7974 if (mono_generic_container_get_param_info (container, i)->flags & (MONO_GEN_PARAM_VARIANT|MONO_GEN_PARAM_COVARIANT))
7981 mono_gparam_is_reference_conversible (MonoClass *target, MonoClass *candidate, gboolean check_for_reference_conv)
7983 if (target == candidate)
7986 if (check_for_reference_conv &&
7987 mono_type_is_generic_argument (&target->byval_arg) &&
7988 mono_type_is_generic_argument (&candidate->byval_arg)) {
7989 MonoGenericParam *gparam = candidate->byval_arg.data.generic_param;
7990 MonoGenericParamInfo *pinfo = mono_generic_param_info (gparam);
7992 if (!pinfo || (pinfo->flags & GENERIC_PARAMETER_ATTRIBUTE_REFERENCE_TYPE_CONSTRAINT) == 0)
7995 if (!mono_class_is_assignable_from (target, candidate))
8001 * @container the generic container from the GTD
8002 * @klass: the class to be assigned to
8003 * @oklass: the source class
8005 * Both @klass and @oklass must be instances of the same generic interface.
8007 * Returns: TRUE if @klass can be assigned to a @klass variable
8010 mono_class_is_variant_compatible (MonoClass *klass, MonoClass *oklass, gboolean check_for_reference_conv)
8013 MonoType **klass_argv, **oklass_argv;
8014 MonoClass *klass_gtd = mono_class_get_generic_type_definition (klass);
8015 MonoGenericContainer *container = mono_class_get_generic_container (klass_gtd);
8017 if (klass == oklass)
8020 /*Viable candidates are instances of the same generic interface*/
8021 if (mono_class_get_generic_type_definition (oklass) != klass_gtd || oklass == klass_gtd)
8024 klass_argv = &mono_class_get_generic_class (klass)->context.class_inst->type_argv [0];
8025 oklass_argv = &mono_class_get_generic_class (oklass)->context.class_inst->type_argv [0];
8027 for (j = 0; j < container->type_argc; ++j) {
8028 MonoClass *param1_class = mono_class_from_mono_type (klass_argv [j]);
8029 MonoClass *param2_class = mono_class_from_mono_type (oklass_argv [j]);
8031 if (param1_class->valuetype != param2_class->valuetype || (param1_class->valuetype && param1_class != param2_class))
8035 * The _VARIANT and _COVARIANT constants should read _COVARIANT and
8036 * _CONTRAVARIANT, but they are in a public header so we can't fix it.
8038 if (param1_class != param2_class) {
8039 if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_VARIANT) {
8040 if (!mono_gparam_is_reference_conversible (param1_class, param2_class, check_for_reference_conv))
8042 } else if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_COVARIANT) {
8043 if (!mono_gparam_is_reference_conversible (param2_class, param1_class, check_for_reference_conv))
8053 mono_gparam_is_assignable_from (MonoClass *target, MonoClass *candidate)
8055 MonoGenericParam *gparam, *ogparam;
8056 MonoGenericParamInfo *tinfo, *cinfo;
8057 MonoClass **candidate_class;
8058 gboolean class_constraint_satisfied, valuetype_constraint_satisfied;
8061 if (target == candidate)
8063 if (target->byval_arg.type != candidate->byval_arg.type)
8066 gparam = target->byval_arg.data.generic_param;
8067 ogparam = candidate->byval_arg.data.generic_param;
8068 tinfo = mono_generic_param_info (gparam);
8069 cinfo = mono_generic_param_info (ogparam);
8071 class_constraint_satisfied = FALSE;
8072 valuetype_constraint_satisfied = FALSE;
8074 /*candidate must have a super set of target's special constraints*/
8075 tmask = tinfo->flags & GENERIC_PARAMETER_ATTRIBUTE_SPECIAL_CONSTRAINTS_MASK;
8076 cmask = cinfo->flags & GENERIC_PARAMETER_ATTRIBUTE_SPECIAL_CONSTRAINTS_MASK;
8078 if (cinfo->constraints) {
8079 for (candidate_class = cinfo->constraints; *candidate_class; ++candidate_class) {
8080 MonoClass *cc = *candidate_class;
8082 if (mono_type_is_reference (&cc->byval_arg) && !MONO_CLASS_IS_INTERFACE (cc))
8083 class_constraint_satisfied = TRUE;
8084 else if (!mono_type_is_reference (&cc->byval_arg) && !MONO_CLASS_IS_INTERFACE (cc))
8085 valuetype_constraint_satisfied = TRUE;
8088 class_constraint_satisfied |= (cmask & GENERIC_PARAMETER_ATTRIBUTE_REFERENCE_TYPE_CONSTRAINT) != 0;
8089 valuetype_constraint_satisfied |= (cmask & GENERIC_PARAMETER_ATTRIBUTE_VALUE_TYPE_CONSTRAINT) != 0;
8091 if ((tmask & GENERIC_PARAMETER_ATTRIBUTE_REFERENCE_TYPE_CONSTRAINT) && !class_constraint_satisfied)
8093 if ((tmask & GENERIC_PARAMETER_ATTRIBUTE_VALUE_TYPE_CONSTRAINT) && !valuetype_constraint_satisfied)
8095 if ((tmask & GENERIC_PARAMETER_ATTRIBUTE_CONSTRUCTOR_CONSTRAINT) && !((cmask & GENERIC_PARAMETER_ATTRIBUTE_CONSTRUCTOR_CONSTRAINT) ||
8096 valuetype_constraint_satisfied)) {
8101 /*candidate type constraints must be a superset of target's*/
8102 if (tinfo->constraints) {
8103 MonoClass **target_class;
8104 for (target_class = tinfo->constraints; *target_class; ++target_class) {
8105 MonoClass *tc = *target_class;
8108 * A constraint from @target might inflate into @candidate itself and in that case we don't need
8109 * check it's constraints since it satisfy the constraint by itself.
8111 if (mono_metadata_type_equal (&tc->byval_arg, &candidate->byval_arg))
8114 if (!cinfo->constraints)
8117 for (candidate_class = cinfo->constraints; *candidate_class; ++candidate_class) {
8118 MonoClass *cc = *candidate_class;
8120 if (mono_class_is_assignable_from (tc, cc))
8124 * This happens when we have the following:
8126 * Bar<K> where K : IFace
8127 * Foo<T, U> where T : U where U : IFace
8129 * Bar<T> <- T here satisfy K constraint transitively through to U's constraint
8132 if (mono_type_is_generic_argument (&cc->byval_arg)) {
8133 if (mono_gparam_is_assignable_from (target, cc))
8137 if (!*candidate_class)
8142 /*candidate itself must have a constraint that satisfy target*/
8143 if (cinfo->constraints) {
8144 for (candidate_class = cinfo->constraints; *candidate_class; ++candidate_class) {
8145 MonoClass *cc = *candidate_class;
8146 if (mono_class_is_assignable_from (target, cc))
8154 * mono_class_is_assignable_from:
8155 * @klass: the class to be assigned to
8156 * @oklass: the source class
8158 * Returns: TRUE if an instance of object oklass can be assigned to an
8159 * instance of object @klass
8162 mono_class_is_assignable_from (MonoClass *klass, MonoClass *oklass)
8165 /*FIXME this will cause a lot of irrelevant stuff to be loaded.*/
8167 mono_class_init (klass);
8169 if (!oklass->inited)
8170 mono_class_init (oklass);
8172 if (mono_class_has_failure (klass) || mono_class_has_failure (oklass))
8175 if (mono_type_is_generic_argument (&klass->byval_arg)) {
8176 if (!mono_type_is_generic_argument (&oklass->byval_arg))
8178 return mono_gparam_is_assignable_from (klass, oklass);
8181 if (MONO_CLASS_IS_INTERFACE (klass)) {
8182 if ((oklass->byval_arg.type == MONO_TYPE_VAR) || (oklass->byval_arg.type == MONO_TYPE_MVAR)) {
8183 MonoGenericParam *gparam = oklass->byval_arg.data.generic_param;
8184 MonoClass **constraints = mono_generic_container_get_param_info (gparam->owner, gparam->num)->constraints;
8188 for (i = 0; constraints [i]; ++i) {
8189 if (mono_class_is_assignable_from (klass, constraints [i]))
8197 /* interface_offsets might not be set for dynamic classes */
8198 if (mono_class_get_ref_info_handle (oklass) && !oklass->interface_bitmap) {
8200 * oklass might be a generic type parameter but they have
8201 * interface_offsets set.
8203 gboolean result = mono_reflection_call_is_assignable_to (oklass, klass, &error);
8204 if (!is_ok (&error)) {
8205 mono_error_cleanup (&error);
8210 if (!oklass->interface_bitmap)
8211 /* Happens with generic instances of not-yet created dynamic types */
8213 if (MONO_CLASS_IMPLEMENTS_INTERFACE (oklass, klass->interface_id))
8216 if (klass->is_array_special_interface && oklass->rank == 1) {
8217 //XXX we could offset this by having the cast target computed at JIT time
8218 //XXX we could go even further and emit a wrapper that would do the extra type check
8219 MonoClass *iface_klass = mono_class_from_mono_type (mono_class_get_generic_class (klass)->context.class_inst->type_argv [0]);
8220 MonoClass *obj_klass = oklass->cast_class; //This gets us the cast class of element type of the array
8222 // If the target we're trying to cast to is a valuetype, we must account of weird valuetype equivalences such as IntEnum <> int or uint <> int
8223 // We can't apply it for ref types as this would go wrong with arrays - IList<byte[]> would have byte tested
8224 if (iface_klass->valuetype)
8225 iface_klass = iface_klass->cast_class;
8227 //array covariant casts only operates on scalar to scalar
8228 //This is so int[] can't be casted to IComparable<int>[]
8229 if (!(obj_klass->valuetype && !iface_klass->valuetype) && mono_class_is_assignable_from (iface_klass, obj_klass))
8233 if (mono_class_has_variant_generic_params (klass)) {
8235 mono_class_setup_interfaces (oklass, &error);
8236 if (!mono_error_ok (&error)) {
8237 mono_error_cleanup (&error);
8241 /*klass is a generic variant interface, We need to extract from oklass a list of ifaces which are viable candidates.*/
8242 for (i = 0; i < oklass->interface_offsets_count; ++i) {
8243 MonoClass *iface = oklass->interfaces_packed [i];
8245 if (mono_class_is_variant_compatible (klass, iface, FALSE))
8250 } else if (klass->delegate) {
8251 if (mono_class_has_variant_generic_params (klass) && mono_class_is_variant_compatible (klass, oklass, FALSE))
8253 }else if (klass->rank) {
8254 MonoClass *eclass, *eoclass;
8256 if (oklass->rank != klass->rank)
8259 /* vectors vs. one dimensional arrays */
8260 if (oklass->byval_arg.type != klass->byval_arg.type)
8263 eclass = klass->cast_class;
8264 eoclass = oklass->cast_class;
8267 * a is b does not imply a[] is b[] when a is a valuetype, and
8268 * b is a reference type.
8271 if (eoclass->valuetype) {
8272 if ((eclass == mono_defaults.enum_class) ||
8273 (eclass == mono_defaults.enum_class->parent) ||
8274 (eclass == mono_defaults.object_class))
8278 return mono_class_is_assignable_from (klass->cast_class, oklass->cast_class);
8279 } else if (mono_class_is_nullable (klass)) {
8280 if (mono_class_is_nullable (oklass))
8281 return mono_class_is_assignable_from (klass->cast_class, oklass->cast_class);
8283 return mono_class_is_assignable_from (klass->cast_class, oklass);
8284 } else if (klass == mono_defaults.object_class)
8287 return mono_class_has_parent (oklass, klass);
8290 /*Check if @oklass is variant compatible with @klass.*/
8292 mono_class_is_variant_compatible_slow (MonoClass *klass, MonoClass *oklass)
8295 MonoType **klass_argv, **oklass_argv;
8296 MonoClass *klass_gtd = mono_class_get_generic_type_definition (klass);
8297 MonoGenericContainer *container = mono_class_get_generic_container (klass_gtd);
8299 /*Viable candidates are instances of the same generic interface*/
8300 if (mono_class_get_generic_type_definition (oklass) != klass_gtd || oklass == klass_gtd)
8303 klass_argv = &mono_class_get_generic_class (klass)->context.class_inst->type_argv [0];
8304 oklass_argv = &mono_class_get_generic_class (oklass)->context.class_inst->type_argv [0];
8306 for (j = 0; j < container->type_argc; ++j) {
8307 MonoClass *param1_class = mono_class_from_mono_type (klass_argv [j]);
8308 MonoClass *param2_class = mono_class_from_mono_type (oklass_argv [j]);
8310 if (param1_class->valuetype != param2_class->valuetype)
8314 * The _VARIANT and _COVARIANT constants should read _COVARIANT and
8315 * _CONTRAVARIANT, but they are in a public header so we can't fix it.
8317 if (param1_class != param2_class) {
8318 if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_VARIANT) {
8319 if (!mono_class_is_assignable_from_slow (param1_class, param2_class))
8321 } else if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_COVARIANT) {
8322 if (!mono_class_is_assignable_from_slow (param2_class, param1_class))
8330 /*Check if @candidate implements the interface @target*/
8332 mono_class_implement_interface_slow (MonoClass *target, MonoClass *candidate)
8336 gboolean is_variant = mono_class_has_variant_generic_params (target);
8338 if (is_variant && MONO_CLASS_IS_INTERFACE (candidate)) {
8339 if (mono_class_is_variant_compatible_slow (target, candidate))
8344 if (candidate == target)
8347 /*A TypeBuilder can have more interfaces on tb->interfaces than on candidate->interfaces*/
8348 if (image_is_dynamic (candidate->image) && !candidate->wastypebuilder) {
8349 MonoReflectionTypeBuilder *tb = (MonoReflectionTypeBuilder *)mono_class_get_ref_info (candidate);
8351 if (tb && tb->interfaces) {
8352 for (j = mono_array_length (tb->interfaces) - 1; j >= 0; --j) {
8353 MonoReflectionType *iface = mono_array_get (tb->interfaces, MonoReflectionType*, j);
8354 MonoClass *iface_class;
8356 /* we can't realize the type here since it can do pretty much anything. */
8359 iface_class = mono_class_from_mono_type (iface->type);
8360 if (iface_class == target)
8362 if (is_variant && mono_class_is_variant_compatible_slow (target, iface_class))
8364 if (mono_class_implement_interface_slow (target, iface_class))
8369 /*setup_interfaces don't mono_class_init anything*/
8370 /*FIXME this doesn't handle primitive type arrays.
8371 ICollection<sbyte> x byte [] won't work because candidate->interfaces, for byte[], won't have IList<sbyte>.
8372 A possible way to fix this would be to move that to setup_interfaces from setup_interface_offsets.
8374 mono_class_setup_interfaces (candidate, &error);
8375 if (!mono_error_ok (&error)) {
8376 mono_error_cleanup (&error);
8380 for (i = 0; i < candidate->interface_count; ++i) {
8381 if (candidate->interfaces [i] == target)
8384 if (is_variant && mono_class_is_variant_compatible_slow (target, candidate->interfaces [i]))
8387 if (mono_class_implement_interface_slow (target, candidate->interfaces [i]))
8391 candidate = candidate->parent;
8392 } while (candidate);
8398 * Check if @oklass can be assigned to @klass.
8399 * This function does the same as mono_class_is_assignable_from but is safe to be used from mono_class_init context.
8402 mono_class_is_assignable_from_slow (MonoClass *target, MonoClass *candidate)
8404 if (candidate == target)
8406 if (target == mono_defaults.object_class)
8409 if (mono_class_has_parent (candidate, target))
8412 /*If target is not an interface there is no need to check them.*/
8413 if (MONO_CLASS_IS_INTERFACE (target))
8414 return mono_class_implement_interface_slow (target, candidate);
8416 if (target->delegate && mono_class_has_variant_generic_params (target))
8417 return mono_class_is_variant_compatible (target, candidate, FALSE);
8420 MonoClass *eclass, *eoclass;
8422 if (target->rank != candidate->rank)
8425 /* vectors vs. one dimensional arrays */
8426 if (target->byval_arg.type != candidate->byval_arg.type)
8429 eclass = target->cast_class;
8430 eoclass = candidate->cast_class;
8433 * a is b does not imply a[] is b[] when a is a valuetype, and
8434 * b is a reference type.
8437 if (eoclass->valuetype) {
8438 if ((eclass == mono_defaults.enum_class) ||
8439 (eclass == mono_defaults.enum_class->parent) ||
8440 (eclass == mono_defaults.object_class))
8444 return mono_class_is_assignable_from_slow (target->cast_class, candidate->cast_class);
8446 /*FIXME properly handle nullables */
8447 /*FIXME properly handle (M)VAR */
8452 * mono_class_get_cctor:
8453 * @klass: A MonoClass pointer
8455 * Returns: The static constructor of @klass if it exists, NULL otherwise.
8458 mono_class_get_cctor (MonoClass *klass)
8460 MonoCachedClassInfo cached_info;
8462 if (image_is_dynamic (klass->image)) {
8464 * has_cctor is not set for these classes because mono_class_init () is
8467 return mono_class_get_method_from_name_flags (klass, ".cctor", -1, METHOD_ATTRIBUTE_SPECIAL_NAME);
8470 mono_class_init (klass);
8472 if (!klass->has_cctor)
8475 if (mono_class_is_ginst (klass) && !klass->methods)
8476 return mono_class_get_inflated_method (klass, mono_class_get_cctor (mono_class_get_generic_class (klass)->container_class));
8478 if (mono_class_get_cached_class_info (klass, &cached_info)) {
8480 MonoMethod *result = mono_get_method_checked (klass->image, cached_info.cctor_token, klass, NULL, &error);
8481 if (!mono_error_ok (&error))
8482 g_error ("Could not lookup class cctor from cached metadata due to %s", mono_error_get_message (&error));
8486 return mono_class_get_method_from_name_flags (klass, ".cctor", -1, METHOD_ATTRIBUTE_SPECIAL_NAME);
8490 * mono_class_get_finalizer:
8491 * @klass: The MonoClass pointer
8493 * Returns: The finalizer method of @klass if it exists, NULL otherwise.
8496 mono_class_get_finalizer (MonoClass *klass)
8498 MonoCachedClassInfo cached_info;
8501 mono_class_init (klass);
8502 if (!mono_class_has_finalizer (klass))
8505 if (mono_class_get_cached_class_info (klass, &cached_info)) {
8507 MonoMethod *result = mono_get_method_checked (cached_info.finalize_image, cached_info.finalize_token, NULL, NULL, &error);
8508 if (!mono_error_ok (&error))
8509 g_error ("Could not lookup finalizer from cached metadata due to %s", mono_error_get_message (&error));
8512 mono_class_setup_vtable (klass);
8513 return klass->vtable [finalize_slot];
8518 * mono_class_needs_cctor_run:
8519 * @klass: the MonoClass pointer
8520 * @caller: a MonoMethod describing the caller
8522 * Determines whenever the class has a static constructor and whenever it
8523 * needs to be called when executing CALLER.
8526 mono_class_needs_cctor_run (MonoClass *klass, MonoMethod *caller)
8530 method = mono_class_get_cctor (klass);
8532 return (method == caller) ? FALSE : TRUE;
8538 * mono_class_array_element_size:
8541 * Returns: The number of bytes an element of type @klass
8542 * uses when stored into an array.
8545 mono_class_array_element_size (MonoClass *klass)
8547 MonoType *type = &klass->byval_arg;
8550 switch (type->type) {
8553 case MONO_TYPE_BOOLEAN:
8557 case MONO_TYPE_CHAR:
8566 case MONO_TYPE_CLASS:
8567 case MONO_TYPE_STRING:
8568 case MONO_TYPE_OBJECT:
8569 case MONO_TYPE_SZARRAY:
8570 case MONO_TYPE_ARRAY:
8571 return sizeof (gpointer);
8576 case MONO_TYPE_VALUETYPE:
8577 if (type->data.klass->enumtype) {
8578 type = mono_class_enum_basetype (type->data.klass);
8579 klass = klass->element_class;
8582 return mono_class_instance_size (klass) - sizeof (MonoObject);
8583 case MONO_TYPE_GENERICINST:
8584 type = &type->data.generic_class->container_class->byval_arg;
8587 case MONO_TYPE_MVAR: {
8590 return mono_type_size (type, &align);
8592 case MONO_TYPE_VOID:
8596 g_error ("unknown type 0x%02x in mono_class_array_element_size", type->type);
8602 * mono_array_element_size:
8603 * @ac: pointer to a #MonoArrayClass
8605 * Returns: The size of single array element.
8608 mono_array_element_size (MonoClass *ac)
8610 g_assert (ac->rank);
8611 return ac->sizes.element_size;
8615 mono_ldtoken (MonoImage *image, guint32 token, MonoClass **handle_class,
8616 MonoGenericContext *context)
8619 gpointer res = mono_ldtoken_checked (image, token, handle_class, context, &error);
8620 g_assert (mono_error_ok (&error));
8625 mono_ldtoken_checked (MonoImage *image, guint32 token, MonoClass **handle_class,
8626 MonoGenericContext *context, MonoError *error)
8628 mono_error_init (error);
8630 if (image_is_dynamic (image)) {
8631 MonoClass *tmp_handle_class;
8632 gpointer obj = mono_lookup_dynamic_token_class (image, token, TRUE, &tmp_handle_class, context, error);
8634 mono_error_assert_ok (error);
8635 g_assert (tmp_handle_class);
8637 *handle_class = tmp_handle_class;
8639 if (tmp_handle_class == mono_defaults.typehandle_class)
8640 return &((MonoClass*)obj)->byval_arg;
8645 switch (token & 0xff000000) {
8646 case MONO_TOKEN_TYPE_DEF:
8647 case MONO_TOKEN_TYPE_REF:
8648 case MONO_TOKEN_TYPE_SPEC: {
8651 *handle_class = mono_defaults.typehandle_class;
8652 type = mono_type_get_checked (image, token, context, error);
8656 mono_class_init (mono_class_from_mono_type (type));
8657 /* We return a MonoType* as handle */
8660 case MONO_TOKEN_FIELD_DEF: {
8662 guint32 type = mono_metadata_typedef_from_field (image, mono_metadata_token_index (token));
8664 mono_error_set_bad_image (error, image, "Bad ldtoken %x", token);
8668 *handle_class = mono_defaults.fieldhandle_class;
8669 klass = mono_class_get_and_inflate_typespec_checked (image, MONO_TOKEN_TYPE_DEF | type, context, error);
8673 mono_class_init (klass);
8674 return mono_class_get_field (klass, token);
8676 case MONO_TOKEN_METHOD_DEF:
8677 case MONO_TOKEN_METHOD_SPEC: {
8679 meth = mono_get_method_checked (image, token, NULL, context, error);
8681 *handle_class = mono_defaults.methodhandle_class;
8687 case MONO_TOKEN_MEMBER_REF: {
8688 guint32 cols [MONO_MEMBERREF_SIZE];
8690 mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], mono_metadata_token_index (token) - 1, cols, MONO_MEMBERREF_SIZE);
8691 sig = mono_metadata_blob_heap (image, cols [MONO_MEMBERREF_SIGNATURE]);
8692 mono_metadata_decode_blob_size (sig, &sig);
8693 if (*sig == 0x6) { /* it's a field */
8695 MonoClassField *field;
8696 field = mono_field_from_token_checked (image, token, &klass, context, error);
8698 *handle_class = mono_defaults.fieldhandle_class;
8702 meth = mono_get_method_checked (image, token, NULL, context, error);
8704 *handle_class = mono_defaults.methodhandle_class;
8709 mono_error_set_bad_image (error, image, "Bad ldtoken %x", token);
8715 mono_lookup_dynamic_token (MonoImage *image, guint32 token, MonoGenericContext *context, MonoError *error)
8717 MonoClass *handle_class;
8718 mono_error_init (error);
8719 return mono_reflection_lookup_dynamic_token (image, token, TRUE, &handle_class, context, error);
8723 mono_lookup_dynamic_token_class (MonoImage *image, guint32 token, gboolean valid_token, MonoClass **handle_class, MonoGenericContext *context, MonoError *error)
8725 return mono_reflection_lookup_dynamic_token (image, token, valid_token, handle_class, context, error);
8728 static MonoGetCachedClassInfo get_cached_class_info = NULL;
8731 mono_install_get_cached_class_info (MonoGetCachedClassInfo func)
8733 get_cached_class_info = func;
8737 mono_class_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
8739 if (!get_cached_class_info)
8742 return get_cached_class_info (klass, res);
8746 mono_install_get_class_from_name (MonoGetClassFromName func)
8748 get_class_from_name = func;
8752 * mono_class_get_image:
8754 * Use this method to get the `MonoImage*` where this class came from.
8756 * Returns: The image where this class is defined.
8759 mono_class_get_image (MonoClass *klass)
8761 return klass->image;
8765 * mono_class_get_element_class:
8766 * @klass: the MonoClass to act on
8768 * Use this function to get the element class of an array.
8770 * Returns: The element class of an array.
8773 mono_class_get_element_class (MonoClass *klass)
8775 return klass->element_class;
8779 * mono_class_is_valuetype:
8780 * @klass: the MonoClass to act on
8782 * Use this method to determine if the provided `MonoClass*` represents a value type,
8783 * or a reference type.
8785 * Returns: TRUE if the MonoClass represents a ValueType, FALSE if it represents a reference type.
8788 mono_class_is_valuetype (MonoClass *klass)
8790 return klass->valuetype;
8794 * mono_class_is_enum:
8795 * @klass: the MonoClass to act on
8797 * Use this function to determine if the provided `MonoClass*` represents an enumeration.
8799 * Returns: TRUE if the MonoClass represents an enumeration.
8802 mono_class_is_enum (MonoClass *klass)
8804 return klass->enumtype;
8808 * mono_class_enum_basetype:
8809 * @klass: the MonoClass to act on
8811 * Use this function to get the underlying type for an enumeration value.
8813 * Returns: The underlying type representation for an enumeration.
8816 mono_class_enum_basetype (MonoClass *klass)
8818 if (klass->element_class == klass)
8819 /* SRE or broken types */
8822 return &klass->element_class->byval_arg;
8826 * mono_class_get_parent
8827 * @klass: the MonoClass to act on
8829 * Returns: The parent class for this class.
8832 mono_class_get_parent (MonoClass *klass)
8834 return klass->parent;
8838 * mono_class_get_nesting_type:
8839 * @klass: the MonoClass to act on
8841 * Use this function to obtain the class that the provided `MonoClass*` is nested on.
8843 * If the return is NULL, this indicates that this class is not nested.
8845 * Returns: The container type where this type is nested or NULL if this type is not a nested type.
8848 mono_class_get_nesting_type (MonoClass *klass)
8850 return klass->nested_in;
8854 * mono_class_get_rank:
8855 * @klass: the MonoClass to act on
8857 * Returns: The rank for the array (the number of dimensions).
8860 mono_class_get_rank (MonoClass *klass)
8866 * mono_class_get_name
8867 * @klass: the MonoClass to act on
8869 * Returns: The name of the class.
8872 mono_class_get_name (MonoClass *klass)
8878 * mono_class_get_namespace:
8879 * @klass: the MonoClass to act on
8881 * Returns: The namespace of the class.
8884 mono_class_get_namespace (MonoClass *klass)
8886 return klass->name_space;
8890 * mono_class_get_type:
8891 * @klass: the MonoClass to act on
8893 * This method returns the internal Type representation for the class.
8895 * Returns: The MonoType from the class.
8898 mono_class_get_type (MonoClass *klass)
8900 return &klass->byval_arg;
8904 * mono_class_get_type_token:
8905 * @klass: the MonoClass to act on
8907 * This method returns type token for the class.
8909 * Returns: The type token for the class.
8912 mono_class_get_type_token (MonoClass *klass)
8914 return klass->type_token;
8918 * mono_class_get_byref_type:
8919 * @klass: the MonoClass to act on
8924 mono_class_get_byref_type (MonoClass *klass)
8926 return &klass->this_arg;
8930 * mono_class_num_fields:
8931 * @klass: the MonoClass to act on
8933 * Returns: The number of static and instance fields in the class.
8936 mono_class_num_fields (MonoClass *klass)
8938 return mono_class_get_field_count (klass);
8942 * mono_class_num_methods:
8943 * @klass: the MonoClass to act on
8945 * Returns: The number of methods in the class.
8948 mono_class_num_methods (MonoClass *klass)
8950 return mono_class_get_method_count (klass);
8954 * mono_class_num_properties
8955 * @klass: the MonoClass to act on
8957 * Returns: The number of properties in the class.
8960 mono_class_num_properties (MonoClass *klass)
8962 mono_class_setup_properties (klass);
8964 return mono_class_get_property_info (klass)->count;
8968 * mono_class_num_events:
8969 * @klass: the MonoClass to act on
8971 * Returns: The number of events in the class.
8974 mono_class_num_events (MonoClass *klass)
8976 mono_class_setup_events (klass);
8978 return mono_class_get_event_info (klass)->count;
8982 * mono_class_get_fields:
8983 * @klass: the MonoClass to act on
8985 * This routine is an iterator routine for retrieving the fields in a class.
8987 * You must pass a gpointer that points to zero and is treated as an opaque handle to
8988 * iterate over all of the elements. When no more values are
8989 * available, the return value is NULL.
8991 * Returns: a @MonoClassField* on each iteration, or NULL when no more fields are available.
8994 mono_class_get_fields (MonoClass* klass, gpointer *iter)
8996 MonoClassField* field;
9000 mono_class_setup_fields (klass);
9001 if (mono_class_has_failure (klass))
9003 /* start from the first */
9004 if (mono_class_get_field_count (klass)) {
9005 *iter = &klass->fields [0];
9006 return &klass->fields [0];
9012 field = (MonoClassField *)*iter;
9014 if (field < &klass->fields [mono_class_get_field_count (klass)]) {
9022 * mono_class_get_methods
9023 * @klass: the MonoClass to act on
9025 * This routine is an iterator routine for retrieving the fields in a class.
9027 * You must pass a gpointer that points to zero and is treated as an opaque handle to
9028 * iterate over all of the elements. When no more values are
9029 * available, the return value is NULL.
9031 * Returns: a MonoMethod on each iteration or NULL when no more methods are available.
9034 mono_class_get_methods (MonoClass* klass, gpointer *iter)
9036 MonoMethod** method;
9040 mono_class_setup_methods (klass);
9043 * We can't fail lookup of methods otherwise the runtime will burst in flames on all sort of places.
9044 * FIXME we should better report this error to the caller
9046 if (!klass->methods)
9048 /* start from the first */
9049 if (mono_class_get_method_count (klass)) {
9050 *iter = &klass->methods [0];
9051 return klass->methods [0];
9057 method = (MonoMethod **)*iter;
9059 if (method < &klass->methods [mono_class_get_method_count (klass)]) {
9067 * mono_class_get_virtual_methods:
9069 * Iterate over the virtual methods of KLASS.
9071 * LOCKING: Assumes the loader lock is held (because of the klass->methods check).
9074 mono_class_get_virtual_methods (MonoClass* klass, gpointer *iter)
9076 MonoMethod** method;
9079 if (klass->methods || !MONO_CLASS_HAS_STATIC_METADATA (klass)) {
9081 mono_class_setup_methods (klass);
9083 * We can't fail lookup of methods otherwise the runtime will burst in flames on all sort of places.
9084 * FIXME we should better report this error to the caller
9086 if (!klass->methods)
9088 /* start from the first */
9089 method = &klass->methods [0];
9091 method = (MonoMethod **)*iter;
9094 int mcount = mono_class_get_method_count (klass);
9095 while (method < &klass->methods [mcount]) {
9096 if (*method && ((*method)->flags & METHOD_ATTRIBUTE_VIRTUAL))
9100 if (method < &klass->methods [mcount]) {
9107 /* Search directly in metadata to avoid calling setup_methods () */
9108 MonoMethod *res = NULL;
9114 start_index = GPOINTER_TO_UINT (*iter);
9117 int first_idx = mono_class_get_first_method_idx (klass);
9118 int mcount = mono_class_get_method_count (klass);
9119 for (i = start_index; i < mcount; ++i) {
9122 /* first_idx points into the methodptr table */
9123 flags = mono_metadata_decode_table_row_col (klass->image, MONO_TABLE_METHOD, first_idx + i, MONO_METHOD_FLAGS);
9125 if (flags & METHOD_ATTRIBUTE_VIRTUAL)
9131 res = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | (first_idx + i + 1), klass, NULL, &error);
9132 mono_error_cleanup (&error); /* FIXME don't swallow the error */
9134 /* Add 1 here so the if (*iter) check fails */
9135 *iter = GUINT_TO_POINTER (i + 1);
9144 * mono_class_get_properties:
9145 * @klass: the MonoClass to act on
9147 * This routine is an iterator routine for retrieving the properties in a class.
9149 * You must pass a gpointer that points to zero and is treated as an opaque handle to
9150 * iterate over all of the elements. When no more values are
9151 * available, the return value is NULL.
9153 * Returns: a @MonoProperty* on each invocation, or NULL when no more are available.
9156 mono_class_get_properties (MonoClass* klass, gpointer *iter)
9158 MonoProperty* property;
9162 mono_class_setup_properties (klass);
9163 MonoClassPropertyInfo *info = mono_class_get_property_info (klass);
9164 /* start from the first */
9166 *iter = &info->properties [0];
9167 return (MonoProperty *)*iter;
9173 property = (MonoProperty *)*iter;
9175 MonoClassPropertyInfo *info = mono_class_get_property_info (klass);
9176 if (property < &info->properties [info->count]) {
9178 return (MonoProperty *)*iter;
9184 * mono_class_get_events:
9185 * @klass: the MonoClass to act on
9187 * This routine is an iterator routine for retrieving the properties in a class.
9189 * You must pass a gpointer that points to zero and is treated as an opaque handle to
9190 * iterate over all of the elements. When no more values are
9191 * available, the return value is NULL.
9193 * Returns: a @MonoEvent* on each invocation, or NULL when no more are available.
9196 mono_class_get_events (MonoClass* klass, gpointer *iter)
9202 mono_class_setup_events (klass);
9203 MonoClassEventInfo *info = mono_class_get_event_info (klass);
9204 /* start from the first */
9206 *iter = &info->events [0];
9207 return (MonoEvent *)*iter;
9213 event = (MonoEvent *)*iter;
9215 MonoClassEventInfo *info = mono_class_get_event_info (klass);
9216 if (event < &info->events [info->count]) {
9218 return (MonoEvent *)*iter;
9224 * mono_class_get_interfaces
9225 * @klass: the MonoClass to act on
9227 * This routine is an iterator routine for retrieving the interfaces implemented by this class.
9229 * You must pass a gpointer that points to zero and is treated as an opaque handle to
9230 * iterate over all of the elements. When no more values are
9231 * available, the return value is NULL.
9233 * Returns: a @Monoclass* on each invocation, or NULL when no more are available.
9236 mono_class_get_interfaces (MonoClass* klass, gpointer *iter)
9244 mono_class_init (klass);
9245 if (!klass->interfaces_inited) {
9246 mono_class_setup_interfaces (klass, &error);
9247 if (!mono_error_ok (&error)) {
9248 mono_error_cleanup (&error);
9252 /* start from the first */
9253 if (klass->interface_count) {
9254 *iter = &klass->interfaces [0];
9255 return klass->interfaces [0];
9261 iface = (MonoClass **)*iter;
9263 if (iface < &klass->interfaces [klass->interface_count]) {
9271 setup_nested_types (MonoClass *klass)
9274 GList *classes, *nested_classes, *l;
9277 if (klass->nested_classes_inited)
9280 if (!klass->type_token)
9281 klass->nested_classes_inited = TRUE;
9283 i = mono_metadata_nesting_typedef (klass->image, klass->type_token, 1);
9287 guint32 cols [MONO_NESTED_CLASS_SIZE];
9288 mono_metadata_decode_row (&klass->image->tables [MONO_TABLE_NESTEDCLASS], i - 1, cols, MONO_NESTED_CLASS_SIZE);
9289 nclass = mono_class_create_from_typedef (klass->image, MONO_TOKEN_TYPE_DEF | cols [MONO_NESTED_CLASS_NESTED], &error);
9290 if (!mono_error_ok (&error)) {
9291 /*FIXME don't swallow the error message*/
9292 mono_error_cleanup (&error);
9294 i = mono_metadata_nesting_typedef (klass->image, klass->type_token, i + 1);
9298 classes = g_list_prepend (classes, nclass);
9300 i = mono_metadata_nesting_typedef (klass->image, klass->type_token, i + 1);
9303 nested_classes = NULL;
9304 for (l = classes; l; l = l->next)
9305 nested_classes = g_list_prepend_image (klass->image, nested_classes, l->data);
9306 g_list_free (classes);
9308 mono_loader_lock ();
9309 if (!klass->nested_classes_inited) {
9310 mono_class_set_nested_classes_property (klass, nested_classes);
9311 mono_memory_barrier ();
9312 klass->nested_classes_inited = TRUE;
9314 mono_loader_unlock ();
9318 * mono_class_get_nested_types
9319 * @klass: the MonoClass to act on
9321 * This routine is an iterator routine for retrieving the nested types of a class.
9322 * This works only if @klass is non-generic, or a generic type definition.
9324 * You must pass a gpointer that points to zero and is treated as an opaque handle to
9325 * iterate over all of the elements. When no more values are
9326 * available, the return value is NULL.
9328 * Returns: a @Monoclass* on each invocation, or NULL when no more are available.
9331 mono_class_get_nested_types (MonoClass* klass, gpointer *iter)
9337 if (!klass->nested_classes_inited)
9338 setup_nested_types (klass);
9341 GList *nested_classes = mono_class_get_nested_classes_property (klass);
9342 /* start from the first */
9343 if (nested_classes) {
9344 *iter = nested_classes;
9345 return (MonoClass *)nested_classes->data;
9347 /* no nested types */
9351 item = (GList *)*iter;
9355 return (MonoClass *)item->data;
9362 * mono_class_is_delegate
9363 * @klass: the MonoClass to act on
9365 * Returns: TRUE if the MonoClass represents a System.Delegate.
9368 mono_class_is_delegate (MonoClass *klass)
9370 return klass->delegate;
9374 * mono_class_implements_interface
9375 * @klass: The MonoClass to act on
9376 * @interface: The interface to check if @klass implements.
9378 * Returns: TRUE if @klass implements @interface.
9381 mono_class_implements_interface (MonoClass* klass, MonoClass* iface)
9383 return mono_class_is_assignable_from (iface, klass);
9387 * mono_field_get_name:
9388 * @field: the MonoClassField to act on
9390 * Returns: The name of the field.
9393 mono_field_get_name (MonoClassField *field)
9399 * mono_field_get_type:
9400 * @field: the MonoClassField to act on
9402 * Returns: MonoType of the field.
9405 mono_field_get_type (MonoClassField *field)
9408 MonoType *type = mono_field_get_type_checked (field, &error);
9409 if (!mono_error_ok (&error)) {
9410 mono_trace_warning (MONO_TRACE_TYPE, "Could not load field's type due to %s", mono_error_get_message (&error));
9411 mono_error_cleanup (&error);
9418 * mono_field_get_type_checked:
9419 * @field: the MonoClassField to act on
9420 * @error: used to return any erro found while retrieving @field type
9422 * Returns: MonoType of the field.
9425 mono_field_get_type_checked (MonoClassField *field, MonoError *error)
9427 mono_error_init (error);
9429 mono_field_resolve_type (field, error);
9434 * mono_field_get_parent:
9435 * @field: the MonoClassField to act on
9437 * Returns: MonoClass where the field was defined.
9440 mono_field_get_parent (MonoClassField *field)
9442 return field->parent;
9446 * mono_field_get_flags;
9447 * @field: the MonoClassField to act on
9449 * The metadata flags for a field are encoded using the
9450 * FIELD_ATTRIBUTE_* constants. See the tabledefs.h file for details.
9452 * Returns: The flags for the field.
9455 mono_field_get_flags (MonoClassField *field)
9458 return mono_field_resolve_flags (field);
9459 return field->type->attrs;
9463 * mono_field_get_offset:
9464 * @field: the MonoClassField to act on
9466 * Returns: The field offset.
9469 mono_field_get_offset (MonoClassField *field)
9471 return field->offset;
9475 mono_field_get_rva (MonoClassField *field)
9479 MonoClass *klass = field->parent;
9480 MonoFieldDefaultValue *def_values;
9482 g_assert (field->type->attrs & FIELD_ATTRIBUTE_HAS_FIELD_RVA);
9484 def_values = mono_class_get_field_def_values (klass);
9486 def_values = (MonoFieldDefaultValue *)mono_class_alloc0 (klass, sizeof (MonoFieldDefaultValue) * mono_class_get_field_count (klass));
9488 mono_class_set_field_def_values (klass, def_values);
9491 field_index = mono_field_get_index (field);
9493 if (!def_values [field_index].data && !image_is_dynamic (klass->image)) {
9494 int first_field_idx = mono_class_get_first_field_idx (klass);
9495 mono_metadata_field_info (field->parent->image, first_field_idx + field_index, NULL, &rva, NULL);
9497 g_warning ("field %s in %s should have RVA data, but hasn't", mono_field_get_name (field), field->parent->name);
9498 def_values [field_index].data = mono_image_rva_map (field->parent->image, rva);
9501 return def_values [field_index].data;
9505 * mono_field_get_data:
9506 * @field: the MonoClassField to act on
9508 * Returns: A pointer to the metadata constant value or to the field
9509 * data if it has an RVA flag.
9512 mono_field_get_data (MonoClassField *field)
9514 if (field->type->attrs & FIELD_ATTRIBUTE_HAS_DEFAULT) {
9515 MonoTypeEnum def_type;
9517 return mono_class_get_field_default_value (field, &def_type);
9518 } else if (field->type->attrs & FIELD_ATTRIBUTE_HAS_FIELD_RVA) {
9519 return mono_field_get_rva (field);
9526 * mono_property_get_name:
9527 * @prop: the MonoProperty to act on
9529 * Returns: The name of the property
9532 mono_property_get_name (MonoProperty *prop)
9538 * mono_property_get_set_method
9539 * @prop: the MonoProperty to act on.
9541 * Returns: The setter method of the property (A MonoMethod)
9544 mono_property_get_set_method (MonoProperty *prop)
9550 * mono_property_get_get_method
9551 * @prop: the MonoProperty to act on.
9553 * Returns: The setter method of the property (A MonoMethod)
9556 mono_property_get_get_method (MonoProperty *prop)
9562 * mono_property_get_parent:
9563 * @prop: the MonoProperty to act on.
9565 * Returns: The MonoClass where the property was defined.
9568 mono_property_get_parent (MonoProperty *prop)
9570 return prop->parent;
9574 * mono_property_get_flags:
9575 * @prop: the MonoProperty to act on.
9577 * The metadata flags for a property are encoded using the
9578 * PROPERTY_ATTRIBUTE_* constants. See the tabledefs.h file for details.
9580 * Returns: The flags for the property.
9583 mono_property_get_flags (MonoProperty *prop)
9589 * mono_event_get_name:
9590 * @event: the MonoEvent to act on
9592 * Returns: The name of the event.
9595 mono_event_get_name (MonoEvent *event)
9601 * mono_event_get_add_method:
9602 * @event: The MonoEvent to act on.
9604 * Returns: The @add' method for the event (a MonoMethod).
9607 mono_event_get_add_method (MonoEvent *event)
9613 * mono_event_get_remove_method:
9614 * @event: The MonoEvent to act on.
9616 * Returns: The @remove method for the event (a MonoMethod).
9619 mono_event_get_remove_method (MonoEvent *event)
9621 return event->remove;
9625 * mono_event_get_raise_method:
9626 * @event: The MonoEvent to act on.
9628 * Returns: The @raise method for the event (a MonoMethod).
9631 mono_event_get_raise_method (MonoEvent *event)
9633 return event->raise;
9637 * mono_event_get_parent:
9638 * @event: the MonoEvent to act on.
9640 * Returns: The MonoClass where the event is defined.
9643 mono_event_get_parent (MonoEvent *event)
9645 return event->parent;
9649 * mono_event_get_flags
9650 * @event: the MonoEvent to act on.
9652 * The metadata flags for an event are encoded using the
9653 * EVENT_* constants. See the tabledefs.h file for details.
9655 * Returns: The flags for the event.
9658 mono_event_get_flags (MonoEvent *event)
9660 return event->attrs;
9664 * mono_class_get_method_from_name:
9665 * @klass: where to look for the method
9666 * @name: name of the method
9667 * @param_count: number of parameters. -1 for any number.
9669 * Obtains a MonoMethod with a given name and number of parameters.
9670 * It only works if there are no multiple signatures for any given method name.
9673 mono_class_get_method_from_name (MonoClass *klass, const char *name, int param_count)
9675 return mono_class_get_method_from_name_flags (klass, name, param_count, 0);
9679 find_method_in_metadata (MonoClass *klass, const char *name, int param_count, int flags)
9681 MonoMethod *res = NULL;
9684 /* Search directly in the metadata to avoid calling setup_methods () */
9685 int first_idx = mono_class_get_first_method_idx (klass);
9686 int mcount = mono_class_get_method_count (klass);
9687 for (i = 0; i < mcount; ++i) {
9689 guint32 cols [MONO_METHOD_SIZE];
9691 MonoMethodSignature *sig;
9693 /* first_idx points into the methodptr table */
9694 mono_metadata_decode_table_row (klass->image, MONO_TABLE_METHOD, first_idx + i, cols, MONO_METHOD_SIZE);
9696 if (!strcmp (mono_metadata_string_heap (klass->image, cols [MONO_METHOD_NAME]), name)) {
9697 method = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | (first_idx + i + 1), klass, NULL, &error);
9699 mono_error_cleanup (&error); /* FIXME don't swallow the error */
9702 if (param_count == -1) {
9706 sig = mono_method_signature_checked (method, &error);
9708 mono_error_cleanup (&error); /* FIXME don't swallow the error */
9711 if (sig->param_count == param_count) {
9722 * mono_class_get_method_from_name_flags:
9723 * @klass: where to look for the method
9724 * @name_space: name of the method
9725 * @param_count: number of parameters. -1 for any number.
9726 * @flags: flags which must be set in the method
9728 * Obtains a MonoMethod with a given name and number of parameters.
9729 * It only works if there are no multiple signatures for any given method name.
9732 mono_class_get_method_from_name_flags (MonoClass *klass, const char *name, int param_count, int flags)
9734 MonoMethod *res = NULL;
9737 mono_class_init (klass);
9739 if (mono_class_is_ginst (klass) && !klass->methods) {
9740 res = mono_class_get_method_from_name_flags (mono_class_get_generic_class (klass)->container_class, name, param_count, flags);
9743 res = mono_class_inflate_generic_method_full_checked (res, klass, mono_class_get_context (klass), &error);
9744 if (!mono_error_ok (&error))
9745 mono_error_cleanup (&error); /*FIXME don't swallow the error */
9750 if (klass->methods || !MONO_CLASS_HAS_STATIC_METADATA (klass)) {
9751 mono_class_setup_methods (klass);
9753 We can't fail lookup of methods otherwise the runtime will burst in flames on all sort of places.
9754 See mono/tests/array_load_exception.il
9755 FIXME we should better report this error to the caller
9757 if (!klass->methods)
9759 int mcount = mono_class_get_method_count (klass);
9760 for (i = 0; i < mcount; ++i) {
9761 MonoMethod *method = klass->methods [i];
9763 if (method->name[0] == name [0] &&
9764 !strcmp (name, method->name) &&
9765 (param_count == -1 || mono_method_signature (method)->param_count == param_count) &&
9766 ((method->flags & flags) == flags)) {
9773 res = find_method_in_metadata (klass, name, param_count, flags);
9780 * mono_class_set_failure:
9781 * @klass: class in which the failure was detected
9782 * @ex_type: the kind of exception/error to be thrown (later)
9783 * @ex_data: exception data (specific to each type of exception/error)
9785 * Keep a detected failure informations in the class for later processing.
9786 * Note that only the first failure is kept.
9788 * LOCKING: Acquires the loader lock.
9791 mono_class_set_failure (MonoClass *klass, MonoErrorBoxed *boxed_error)
9793 g_assert (boxed_error != NULL);
9795 if (mono_class_has_failure (klass))
9798 mono_loader_lock ();
9799 klass->has_failure = 1;
9800 mono_class_set_exception_data (klass, boxed_error);
9801 mono_loader_unlock ();
9807 mono_class_has_failure (const MonoClass *klass)
9809 g_assert (klass != NULL);
9810 return klass->has_failure != 0;
9815 * mono_class_set_type_load_failure:
9816 * @klass: class in which the failure was detected
9817 * @fmt: Printf-style error message string.
9819 * Collect detected failure informaion in the class for later processing.
9820 * The error is stored as a MonoErrorBoxed as with mono_error_set_type_load_class ()
9821 * Note that only the first failure is kept.
9823 * Returns FALSE if a failure was already set on the class, or TRUE otherwise.
9825 * LOCKING: Acquires the loader lock.
9828 mono_class_set_type_load_failure (MonoClass *klass, const char * fmt, ...)
9830 MonoError prepare_error;
9833 if (mono_class_has_failure (klass))
9836 mono_error_init (&prepare_error);
9838 va_start (args, fmt);
9839 mono_error_vset_type_load_class (&prepare_error, klass, fmt, args);
9842 MonoErrorBoxed *box = mono_error_box (&prepare_error, klass->image);
9843 mono_error_cleanup (&prepare_error);
9844 return mono_class_set_failure (klass, box);
9848 * mono_classes_init:
9850 * Initialize the resources used by this module.
9853 mono_classes_init (void)
9855 mono_os_mutex_init (&classes_mutex);
9857 mono_native_tls_alloc (&setup_fields_tls_id, NULL);
9858 mono_native_tls_alloc (&init_pending_tls_id, NULL);
9860 mono_counters_register ("MonoClassDef count",
9861 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &class_def_count);
9862 mono_counters_register ("MonoClassGtd count",
9863 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &class_gtd_count);
9864 mono_counters_register ("MonoClassGenericInst count",
9865 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &class_ginst_count);
9866 mono_counters_register ("MonoClassGenericParam count",
9867 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &class_gparam_count);
9868 mono_counters_register ("MonoClassArray count",
9869 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &class_array_count);
9870 mono_counters_register ("MonoClassPointer count",
9871 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &class_pointer_count);
9872 mono_counters_register ("Inflated methods size",
9873 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_methods_size);
9874 mono_counters_register ("Inflated classes size",
9875 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_classes_size);
9876 mono_counters_register ("MonoClass size",
9877 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &classes_size);
9881 * mono_classes_cleanup:
9883 * Free the resources used by this module.
9886 mono_classes_cleanup (void)
9888 mono_native_tls_free (setup_fields_tls_id);
9889 mono_native_tls_free (init_pending_tls_id);
9891 if (global_interface_bitset)
9892 mono_bitset_free (global_interface_bitset);
9893 global_interface_bitset = NULL;
9894 mono_os_mutex_destroy (&classes_mutex);
9898 * mono_class_get_exception_for_failure:
9899 * @klass: class in which the failure was detected
9901 * Return a constructed MonoException than the caller can then throw
9902 * using mono_raise_exception - or NULL if no failure is present (or
9903 * doesn't result in an exception).
9906 mono_class_get_exception_for_failure (MonoClass *klass)
9908 if (!mono_class_has_failure (klass))
9910 MonoError unboxed_error;
9911 mono_error_init (&unboxed_error);
9912 mono_error_set_for_class_failure (&unboxed_error, klass);
9913 return mono_error_convert_to_exception (&unboxed_error);
9917 is_nesting_type (MonoClass *outer_klass, MonoClass *inner_klass)
9919 outer_klass = mono_class_get_generic_type_definition (outer_klass);
9920 inner_klass = mono_class_get_generic_type_definition (inner_klass);
9922 if (outer_klass == inner_klass)
9924 inner_klass = inner_klass->nested_in;
9925 } while (inner_klass);
9930 mono_class_get_generic_type_definition (MonoClass *klass)
9932 MonoGenericClass *gklass = mono_class_try_get_generic_class (klass);
9933 return gklass ? gklass->container_class : klass;
9937 * Check if @klass is a subtype of @parent ignoring generic instantiations.
9939 * Generic instantiations are ignored for all super types of @klass.
9941 * Visibility checks ignoring generic instantiations.
9944 mono_class_has_parent_and_ignore_generics (MonoClass *klass, MonoClass *parent)
9947 klass = mono_class_get_generic_type_definition (klass);
9948 parent = mono_class_get_generic_type_definition (parent);
9949 mono_class_setup_supertypes (klass);
9951 for (i = 0; i < klass->idepth; ++i) {
9952 if (parent == mono_class_get_generic_type_definition (klass->supertypes [i]))
9958 * Subtype can only access parent members with family protection if the site object
9959 * is subclass of Subtype. For example:
9960 * class A { protected int x; }
9962 * void valid_access () {
9966 * void invalid_access () {
9973 is_valid_family_access (MonoClass *access_klass, MonoClass *member_klass, MonoClass *context_klass)
9975 if (!mono_class_has_parent_and_ignore_generics (access_klass, member_klass))
9978 if (context_klass == NULL)
9980 /*if access_klass is not member_klass context_klass must be type compat*/
9981 if (access_klass != member_klass && !mono_class_has_parent_and_ignore_generics (context_klass, access_klass))
9987 can_access_internals (MonoAssembly *accessing, MonoAssembly* accessed)
9990 if (accessing == accessed)
9992 if (!accessed || !accessing)
9995 /* extra safety under CoreCLR - the runtime does not verify the strongname signatures
9996 * anywhere so untrusted friends are not safe to access platform's code internals */
9997 if (mono_security_core_clr_enabled ()) {
9998 if (!mono_security_core_clr_can_access_internals (accessing->image, accessed->image))
10002 mono_assembly_load_friends (accessed);
10003 for (tmp = accessed->friend_assembly_names; tmp; tmp = tmp->next) {
10004 MonoAssemblyName *friend_ = (MonoAssemblyName *)tmp->data;
10005 /* Be conservative with checks */
10006 if (!friend_->name)
10008 if (strcmp (accessing->aname.name, friend_->name))
10010 if (friend_->public_key_token [0]) {
10011 if (!accessing->aname.public_key_token [0])
10013 if (!mono_public_tokens_are_equal (friend_->public_key_token, accessing->aname.public_key_token))
10022 * If klass is a generic type or if it is derived from a generic type, return the
10023 * MonoClass of the generic definition
10024 * Returns NULL if not found
10027 get_generic_definition_class (MonoClass *klass)
10030 MonoGenericClass *gklass = mono_class_try_get_generic_class (klass);
10031 if (gklass && gklass->container_class)
10032 return gklass->container_class;
10033 klass = klass->parent;
10039 can_access_instantiation (MonoClass *access_klass, MonoGenericInst *ginst)
10042 for (i = 0; i < ginst->type_argc; ++i) {
10043 MonoType *type = ginst->type_argv[i];
10044 switch (type->type) {
10045 case MONO_TYPE_SZARRAY:
10046 if (!can_access_type (access_klass, type->data.klass))
10049 case MONO_TYPE_ARRAY:
10050 if (!can_access_type (access_klass, type->data.array->eklass))
10053 case MONO_TYPE_PTR:
10054 if (!can_access_type (access_klass, mono_class_from_mono_type (type->data.type)))
10057 case MONO_TYPE_CLASS:
10058 case MONO_TYPE_VALUETYPE:
10059 case MONO_TYPE_GENERICINST:
10060 if (!can_access_type (access_klass, mono_class_from_mono_type (type)))
10070 can_access_type (MonoClass *access_klass, MonoClass *member_klass)
10074 if (access_klass == member_klass)
10077 if (access_klass->image->assembly && access_klass->image->assembly->corlib_internal)
10080 if (access_klass->element_class && !access_klass->enumtype)
10081 access_klass = access_klass->element_class;
10083 if (member_klass->element_class && !member_klass->enumtype)
10084 member_klass = member_klass->element_class;
10086 access_level = mono_class_get_flags (member_klass) & TYPE_ATTRIBUTE_VISIBILITY_MASK;
10088 if (member_klass->byval_arg.type == MONO_TYPE_VAR || member_klass->byval_arg.type == MONO_TYPE_MVAR)
10091 if (mono_class_is_ginst (member_klass) && !can_access_instantiation (access_klass, mono_class_get_generic_class (member_klass)->context.class_inst))
10094 if (is_nesting_type (access_klass, member_klass) || (access_klass->nested_in && is_nesting_type (access_klass->nested_in, member_klass)))
10097 if (member_klass->nested_in && !can_access_type (access_klass, member_klass->nested_in))
10100 /*Non nested type with nested visibility. We just fail it.*/
10101 if (access_level >= TYPE_ATTRIBUTE_NESTED_PRIVATE && access_level <= TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM && member_klass->nested_in == NULL)
10104 switch (access_level) {
10105 case TYPE_ATTRIBUTE_NOT_PUBLIC:
10106 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
10108 case TYPE_ATTRIBUTE_PUBLIC:
10111 case TYPE_ATTRIBUTE_NESTED_PUBLIC:
10114 case TYPE_ATTRIBUTE_NESTED_PRIVATE:
10115 return is_nesting_type (member_klass, access_klass);
10117 case TYPE_ATTRIBUTE_NESTED_FAMILY:
10118 return mono_class_has_parent_and_ignore_generics (access_klass, member_klass->nested_in);
10120 case TYPE_ATTRIBUTE_NESTED_ASSEMBLY:
10121 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
10123 case TYPE_ATTRIBUTE_NESTED_FAM_AND_ASSEM:
10124 return can_access_internals (access_klass->image->assembly, member_klass->nested_in->image->assembly) &&
10125 mono_class_has_parent_and_ignore_generics (access_klass, member_klass->nested_in);
10127 case TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM:
10128 return can_access_internals (access_klass->image->assembly, member_klass->nested_in->image->assembly) ||
10129 mono_class_has_parent_and_ignore_generics (access_klass, member_klass->nested_in);
10134 /* FIXME: check visibility of type, too */
10136 can_access_member (MonoClass *access_klass, MonoClass *member_klass, MonoClass* context_klass, int access_level)
10138 MonoClass *member_generic_def;
10139 if (access_klass->image->assembly && access_klass->image->assembly->corlib_internal)
10142 MonoGenericClass *access_gklass = mono_class_try_get_generic_class (access_klass);
10143 if (((access_gklass && access_gklass->container_class) ||
10144 mono_class_is_gtd (access_klass)) &&
10145 (member_generic_def = get_generic_definition_class (member_klass))) {
10146 MonoClass *access_container;
10148 if (mono_class_is_gtd (access_klass))
10149 access_container = access_klass;
10151 access_container = access_gklass->container_class;
10153 if (can_access_member (access_container, member_generic_def, context_klass, access_level))
10157 /* Partition I 8.5.3.2 */
10158 /* the access level values are the same for fields and methods */
10159 switch (access_level) {
10160 case FIELD_ATTRIBUTE_COMPILER_CONTROLLED:
10161 /* same compilation unit */
10162 return access_klass->image == member_klass->image;
10163 case FIELD_ATTRIBUTE_PRIVATE:
10164 return access_klass == member_klass;
10165 case FIELD_ATTRIBUTE_FAM_AND_ASSEM:
10166 if (is_valid_family_access (access_klass, member_klass, context_klass) &&
10167 can_access_internals (access_klass->image->assembly, member_klass->image->assembly))
10170 case FIELD_ATTRIBUTE_ASSEMBLY:
10171 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
10172 case FIELD_ATTRIBUTE_FAMILY:
10173 if (is_valid_family_access (access_klass, member_klass, context_klass))
10176 case FIELD_ATTRIBUTE_FAM_OR_ASSEM:
10177 if (is_valid_family_access (access_klass, member_klass, context_klass))
10179 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
10180 case FIELD_ATTRIBUTE_PUBLIC:
10187 * mono_method_can_access_field:
10188 * @method: Method that will attempt to access the field
10189 * @field: the field to access
10191 * Used to determine if a method is allowed to access the specified field.
10193 * Returns: TRUE if the given @method is allowed to access the @field while following
10194 * the accessibility rules of the CLI.
10197 mono_method_can_access_field (MonoMethod *method, MonoClassField *field)
10199 /* FIXME: check all overlapping fields */
10200 int can = can_access_member (method->klass, field->parent, NULL, mono_field_get_type (field)->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
10202 MonoClass *nested = method->klass->nested_in;
10204 can = can_access_member (nested, field->parent, NULL, mono_field_get_type (field)->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
10207 nested = nested->nested_in;
10214 * mono_method_can_access_method:
10215 * @method: Method that will attempt to access the other method
10216 * @called: the method that we want to probe for accessibility.
10218 * Used to determine if the @method is allowed to access the specified @called method.
10220 * Returns: TRUE if the given @method is allowed to invoke the @called while following
10221 * the accessibility rules of the CLI.
10224 mono_method_can_access_method (MonoMethod *method, MonoMethod *called)
10226 method = mono_method_get_method_definition (method);
10227 called = mono_method_get_method_definition (called);
10228 return mono_method_can_access_method_full (method, called, NULL);
10232 * mono_method_can_access_method_full:
10233 * @method: The caller method
10234 * @called: The called method
10235 * @context_klass: The static type on stack of the owner @called object used
10237 * This function must be used with instance calls, as they have more strict family accessibility.
10238 * It can be used with static methods, but context_klass should be NULL.
10240 * Returns: TRUE if caller have proper visibility and acessibility to @called
10243 mono_method_can_access_method_full (MonoMethod *method, MonoMethod *called, MonoClass *context_klass)
10245 /* Wrappers are except from access checks */
10246 if (method->wrapper_type != MONO_WRAPPER_NONE || called->wrapper_type != MONO_WRAPPER_NONE)
10249 MonoClass *access_class = method->klass;
10250 MonoClass *member_class = called->klass;
10251 int can = can_access_member (access_class, member_class, context_klass, called->flags & METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK);
10253 MonoClass *nested = access_class->nested_in;
10255 can = can_access_member (nested, member_class, context_klass, called->flags & METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK);
10258 nested = nested->nested_in;
10265 can = can_access_type (access_class, member_class);
10267 MonoClass *nested = access_class->nested_in;
10269 can = can_access_type (nested, member_class);
10272 nested = nested->nested_in;
10279 if (called->is_inflated) {
10280 MonoMethodInflated * infl = (MonoMethodInflated*)called;
10281 if (infl->context.method_inst && !can_access_instantiation (access_class, infl->context.method_inst))
10290 * mono_method_can_access_field_full:
10291 * @method: The caller method
10292 * @field: The accessed field
10293 * @context_klass: The static type on stack of the owner @field object used
10295 * This function must be used with instance fields, as they have more strict family accessibility.
10296 * It can be used with static fields, but context_klass should be NULL.
10298 * Returns: TRUE if caller have proper visibility and acessibility to @field
10301 mono_method_can_access_field_full (MonoMethod *method, MonoClassField *field, MonoClass *context_klass)
10303 MonoClass *access_class = method->klass;
10304 MonoClass *member_class = field->parent;
10305 /* FIXME: check all overlapping fields */
10306 int can = can_access_member (access_class, member_class, context_klass, field->type->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
10308 MonoClass *nested = access_class->nested_in;
10310 can = can_access_member (nested, member_class, context_klass, field->type->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
10313 nested = nested->nested_in;
10320 can = can_access_type (access_class, member_class);
10322 MonoClass *nested = access_class->nested_in;
10324 can = can_access_type (nested, member_class);
10327 nested = nested->nested_in;
10337 * mono_class_can_access_class:
10338 * @source_class: The source class
10339 * @target_class: The accessed class
10341 * This function returns is @target_class is visible to @source_class
10343 * Returns: TRUE if source have proper visibility and acessibility to target
10346 mono_class_can_access_class (MonoClass *source_class, MonoClass *target_class)
10348 return can_access_type (source_class, target_class);
10352 * mono_type_is_valid_enum_basetype:
10353 * @type: The MonoType to check
10355 * Returns: TRUE if the type can be used as the basetype of an enum
10357 gboolean mono_type_is_valid_enum_basetype (MonoType * type) {
10358 switch (type->type) {
10361 case MONO_TYPE_BOOLEAN:
10364 case MONO_TYPE_CHAR:
10378 * mono_class_is_valid_enum:
10379 * @klass: An enum class to be validated
10381 * This method verify the required properties an enum should have.
10383 * Returns: TRUE if the informed enum class is valid
10385 * FIXME: TypeBuilder enums are allowed to implement interfaces, but since they cannot have methods, only empty interfaces are possible
10386 * FIXME: enum types are not allowed to have a cctor, but mono_reflection_create_runtime_class sets has_cctor to 1 for all types
10387 * FIXME: TypeBuilder enums can have any kind of static fields, but the spec is very explicit about that (P II 14.3)
10390 mono_class_is_valid_enum (MonoClass *klass)
10392 MonoClassField * field;
10393 gpointer iter = NULL;
10394 gboolean found_base_field = FALSE;
10396 g_assert (klass->enumtype);
10397 /* we cannot test against mono_defaults.enum_class, or mcs won't be able to compile the System namespace*/
10398 if (!klass->parent || strcmp (klass->parent->name, "Enum") || strcmp (klass->parent->name_space, "System") ) {
10402 if (!mono_class_is_auto_layout (klass))
10405 while ((field = mono_class_get_fields (klass, &iter))) {
10406 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
10407 if (found_base_field)
10409 found_base_field = TRUE;
10410 if (!mono_type_is_valid_enum_basetype (field->type))
10415 if (!found_base_field)
10418 if (mono_class_get_method_count (klass) > 0)
10425 mono_generic_class_is_generic_type_definition (MonoGenericClass *gklass)
10427 return gklass->context.class_inst == mono_class_get_generic_container (gklass->container_class)->context.class_inst;
10431 * mono_class_setup_interface_id:
10433 * Initializes MonoClass::interface_id if required.
10435 * LOCKING: Acquires the loader lock.
10438 mono_class_setup_interface_id (MonoClass *klass)
10440 mono_loader_lock ();
10441 if (MONO_CLASS_IS_INTERFACE (klass) && !klass->interface_id)
10442 klass->interface_id = mono_get_unique_iid (klass);
10443 mono_loader_unlock ();
10447 * mono_class_setup_interfaces:
10449 * Initialize klass->interfaces/interfaces_count.
10450 * LOCKING: Acquires the loader lock.
10451 * This function can fail the type.
10454 mono_class_setup_interfaces (MonoClass *klass, MonoError *error)
10456 int i, interface_count;
10457 MonoClass **interfaces;
10459 mono_error_init (error);
10461 if (klass->interfaces_inited)
10464 if (klass->rank == 1 && klass->byval_arg.type != MONO_TYPE_ARRAY) {
10465 MonoType *args [1];
10467 /* generic IList, ICollection, IEnumerable */
10468 interface_count = mono_defaults.generic_ireadonlylist_class ? 2 : 1;
10469 interfaces = (MonoClass **)mono_image_alloc0 (klass->image, sizeof (MonoClass*) * interface_count);
10471 args [0] = &klass->element_class->byval_arg;
10472 interfaces [0] = mono_class_bind_generic_parameters (
10473 mono_defaults.generic_ilist_class, 1, args, FALSE);
10474 if (interface_count > 1)
10475 interfaces [1] = mono_class_bind_generic_parameters (
10476 mono_defaults.generic_ireadonlylist_class, 1, args, FALSE);
10477 } else if (mono_class_is_ginst (klass)) {
10478 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
10480 mono_class_setup_interfaces (gklass, error);
10481 if (!mono_error_ok (error)) {
10482 mono_class_set_type_load_failure (klass, "Could not setup the interfaces");
10486 interface_count = gklass->interface_count;
10487 interfaces = mono_class_new0 (klass, MonoClass *, interface_count);
10488 for (i = 0; i < interface_count; i++) {
10489 interfaces [i] = mono_class_inflate_generic_class_checked (gklass->interfaces [i], mono_generic_class_get_context (mono_class_get_generic_class (klass)), error);
10490 if (!mono_error_ok (error)) {
10491 mono_class_set_type_load_failure (klass, "Could not setup the interfaces");
10496 interface_count = 0;
10500 mono_image_lock (klass->image);
10502 if (!klass->interfaces_inited) {
10503 klass->interface_count = interface_count;
10504 klass->interfaces = interfaces;
10506 mono_memory_barrier ();
10508 klass->interfaces_inited = TRUE;
10511 mono_image_unlock (klass->image);
10515 mono_field_resolve_type (MonoClassField *field, MonoError *error)
10517 MonoClass *klass = field->parent;
10518 MonoImage *image = klass->image;
10519 MonoClass *gtd = mono_class_is_ginst (klass) ? mono_class_get_generic_type_definition (klass) : NULL;
10521 int field_idx = field - klass->fields;
10523 mono_error_init (error);
10526 MonoClassField *gfield = >d->fields [field_idx];
10527 MonoType *gtype = mono_field_get_type_checked (gfield, error);
10528 if (!mono_error_ok (error)) {
10529 char *full_name = mono_type_get_full_name (gtd);
10530 mono_class_set_type_load_failure (klass, "Could not load generic type of field '%s:%s' (%d) due to: %s", full_name, gfield->name, field_idx, mono_error_get_message (error));
10531 g_free (full_name);
10534 ftype = mono_class_inflate_generic_type_no_copy (image, gtype, mono_class_get_context (klass), error);
10535 if (!mono_error_ok (error)) {
10536 char *full_name = mono_type_get_full_name (klass);
10537 mono_class_set_type_load_failure (klass, "Could not load instantiated type of field '%s:%s' (%d) due to: %s", full_name, field->name, field_idx, mono_error_get_message (error));
10538 g_free (full_name);
10542 guint32 cols [MONO_FIELD_SIZE];
10543 MonoGenericContainer *container = NULL;
10544 int idx = mono_class_get_first_field_idx (klass) + field_idx;
10546 /*FIXME, in theory we do not lazy load SRE fields*/
10547 g_assert (!image_is_dynamic (image));
10549 if (mono_class_is_gtd (klass)) {
10550 container = mono_class_get_generic_container (klass);
10552 container = mono_class_get_generic_container (gtd);
10553 g_assert (container);
10556 /* first_field_idx and idx points into the fieldptr table */
10557 mono_metadata_decode_table_row (image, MONO_TABLE_FIELD, idx, cols, MONO_FIELD_SIZE);
10559 if (!mono_verifier_verify_field_signature (image, cols [MONO_FIELD_SIGNATURE], NULL)) {
10560 char *full_name = mono_type_get_full_name (klass);
10561 mono_error_set_type_load_class (error, klass, "Could not verify field '%s:%s' signature", full_name, field->name);;
10562 mono_class_set_type_load_failure (klass, "%s", mono_error_get_message (error));
10563 g_free (full_name);
10567 sig = mono_metadata_blob_heap (image, cols [MONO_FIELD_SIGNATURE]);
10569 mono_metadata_decode_value (sig, &sig);
10570 /* FIELD signature == 0x06 */
10571 g_assert (*sig == 0x06);
10573 ftype = mono_metadata_parse_type_checked (image, container, cols [MONO_FIELD_FLAGS], FALSE, sig + 1, &sig, error);
10575 char *full_name = mono_type_get_full_name (klass);
10576 mono_class_set_type_load_failure (klass, "Could not load type of field '%s:%s' (%d) due to: %s", full_name, field->name, field_idx, mono_error_get_message (error));
10577 g_free (full_name);
10580 mono_memory_barrier ();
10581 field->type = ftype;
10585 mono_field_resolve_flags (MonoClassField *field)
10587 MonoClass *klass = field->parent;
10588 MonoImage *image = klass->image;
10589 MonoClass *gtd = mono_class_is_ginst (klass) ? mono_class_get_generic_type_definition (klass) : NULL;
10590 int field_idx = field - klass->fields;
10594 MonoClassField *gfield = >d->fields [field_idx];
10595 return mono_field_get_flags (gfield);
10597 int idx = mono_class_get_first_field_idx (klass) + field_idx;
10599 /*FIXME, in theory we do not lazy load SRE fields*/
10600 g_assert (!image_is_dynamic (image));
10602 return mono_metadata_decode_table_row_col (image, MONO_TABLE_FIELD, idx, MONO_FIELD_FLAGS);
10607 * mono_class_get_fields_lazy:
10608 * @klass: the MonoClass to act on
10610 * This routine is an iterator routine for retrieving the fields in a class.
10611 * Only minimal information about fields are loaded. Accessors must be used
10612 * for all MonoClassField returned.
10614 * You must pass a gpointer that points to zero and is treated as an opaque handle to
10615 * iterate over all of the elements. When no more values are
10616 * available, the return value is NULL.
10618 * Returns: a @MonoClassField* on each iteration, or NULL when no more fields are available.
10621 mono_class_get_fields_lazy (MonoClass* klass, gpointer *iter)
10623 MonoClassField* field;
10627 mono_class_setup_basic_field_info (klass);
10628 if (!klass->fields)
10630 /* start from the first */
10631 if (mono_class_get_field_count (klass)) {
10632 *iter = &klass->fields [0];
10633 return (MonoClassField *)*iter;
10639 field = (MonoClassField *)*iter;
10641 if (field < &klass->fields [mono_class_get_field_count (klass)]) {
10643 return (MonoClassField *)*iter;
10649 mono_class_full_name (MonoClass *klass)
10651 return mono_type_full_name (&klass->byval_arg);
10654 /* Declare all shared lazy type lookup functions */
10655 GENERATE_TRY_GET_CLASS_WITH_CACHE (safehandle, System.Runtime.InteropServices, SafeHandle)