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, GHashTable *cache);
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 mono_loader_lock ();
1655 klass->instance_size = cached_info->instance_size;
1656 klass->sizes.class_size = cached_info->class_size;
1657 klass->packing_size = cached_info->packing_size;
1658 klass->min_align = cached_info->min_align;
1659 klass->blittable = cached_info->blittable;
1660 klass->has_references = cached_info->has_references;
1661 klass->has_static_refs = cached_info->has_static_refs;
1662 klass->no_special_static_fields = cached_info->no_special_static_fields;
1663 mono_loader_unlock ();
1666 if (!klass->size_inited)
1667 mono_class_setup_fields (klass);
1672 * mono_class_init_sizes:
1674 * Initializes the size related fields of @klass without loading all field data if possible.
1675 * Sets the following fields in @klass:
1677 * - sizes.class_size
1684 * Can fail the class.
1686 * LOCKING: Acquires the loader lock.
1689 mono_class_init_sizes (MonoClass *klass)
1691 MonoCachedClassInfo cached_info;
1692 gboolean has_cached_info;
1694 if (klass->size_inited)
1697 has_cached_info = mono_class_get_cached_class_info (klass, &cached_info);
1699 init_sizes_with_info (klass, has_cached_info ? &cached_info : NULL);
1703 * mono_type_get_basic_type_from_generic:
1706 * Returns a closed type corresponding to the possibly open type
1710 mono_type_get_basic_type_from_generic (MonoType *type)
1712 /* When we do generic sharing we let type variables stand for reference/primitive types. */
1713 if (!type->byref && (type->type == MONO_TYPE_VAR || type->type == MONO_TYPE_MVAR) &&
1714 (!type->data.generic_param->gshared_constraint || type->data.generic_param->gshared_constraint->type == MONO_TYPE_OBJECT))
1715 return &mono_defaults.object_class->byval_arg;
1720 class_has_references (MonoClass *klass)
1722 mono_class_init_sizes (klass);
1725 * has_references is not set if this is called recursively, but this is not a problem since this is only used
1726 * during field layout, and instance fields are initialized before static fields, and instance fields can't
1729 return klass->has_references;
1733 type_has_references (MonoClass *klass, MonoType *ftype)
1735 if (MONO_TYPE_IS_REFERENCE (ftype) || IS_GC_REFERENCE (klass, ftype) || ((MONO_TYPE_ISSTRUCT (ftype) && class_has_references (mono_class_from_mono_type (ftype)))))
1737 if (!ftype->byref && (ftype->type == MONO_TYPE_VAR || ftype->type == MONO_TYPE_MVAR)) {
1738 MonoGenericParam *gparam = ftype->data.generic_param;
1740 if (gparam->gshared_constraint)
1741 return class_has_references (mono_class_from_mono_type (gparam->gshared_constraint));
1747 * mono_class_layout_fields:
1749 * @base_instance_size: base instance size
1752 * This contains the common code for computing the layout of classes and sizes.
1753 * This should only be called from mono_class_setup_fields () and
1754 * typebuilder_setup_fields ().
1756 * LOCKING: Acquires the loader lock
1759 mono_class_layout_fields (MonoClass *klass, int base_instance_size, int packing_size, gboolean sre)
1762 const int top = mono_class_get_field_count (klass);
1763 guint32 layout = mono_class_get_flags (klass) & TYPE_ATTRIBUTE_LAYOUT_MASK;
1764 guint32 pass, passes, real_size;
1765 gboolean gc_aware_layout = FALSE;
1766 gboolean has_static_fields = FALSE;
1767 gboolean has_references = FALSE;
1768 gboolean has_static_refs = FALSE;
1769 MonoClassField *field;
1771 int instance_size = base_instance_size;
1772 int class_size, min_align;
1774 gboolean *fields_has_references;
1777 * We want to avoid doing complicated work inside locks, so we compute all the required
1778 * information and write it to @klass inside a lock.
1780 if (klass->fields_inited)
1783 if ((packing_size & 0xffffff00) != 0) {
1784 mono_class_set_type_load_failure (klass, "Could not load struct '%s' with packing size %d >= 256", klass->name, packing_size);
1788 if (klass->parent) {
1789 min_align = klass->parent->min_align;
1790 /* we use | since it may have been set already */
1791 has_references = klass->has_references | klass->parent->has_references;
1795 /* We can't really enable 16 bytes alignment until the GC supports it.
1796 The whole layout/instance size code must be reviewed because we do alignment calculation in terms of the
1797 boxed instance, which leads to unexplainable holes at the beginning of an object embedding a simd type.
1798 Bug #506144 is an example of this issue.
1800 if (klass->simd_type)
1805 * When we do generic sharing we need to have layout
1806 * information for open generic classes (either with a generic
1807 * context containing type variables or with a generic
1808 * container), so we don't return in that case anymore.
1811 if (klass->enumtype) {
1812 for (i = 0; i < top; i++) {
1813 field = &klass->fields [i];
1814 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
1815 klass->cast_class = klass->element_class = mono_class_from_mono_type (field->type);
1820 if (!mono_class_enum_basetype (klass)) {
1821 mono_class_set_type_load_failure (klass, "The enumeration's base type is invalid.");
1827 * Enable GC aware auto layout: in this mode, reference
1828 * fields are grouped together inside objects, increasing collector
1830 * Requires that all classes whose layout is known to native code be annotated
1831 * with [StructLayout (LayoutKind.Sequential)]
1832 * Value types have gc_aware_layout disabled by default, as per
1833 * what the default is for other runtimes.
1835 /* corlib is missing [StructLayout] directives in many places */
1836 if (layout == TYPE_ATTRIBUTE_AUTO_LAYOUT) {
1837 if (!klass->valuetype)
1838 gc_aware_layout = TRUE;
1841 /* Compute klass->blittable */
1844 blittable = klass->parent->blittable;
1845 if (layout == TYPE_ATTRIBUTE_AUTO_LAYOUT && !(mono_is_corlib_image (klass->image) && !strcmp (klass->name_space, "System") && !strcmp (klass->name, "ValueType")) && top)
1847 for (i = 0; i < top; i++) {
1848 field = &klass->fields [i];
1850 if (mono_field_is_deleted (field))
1852 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
1855 if (field->type->byref || MONO_TYPE_IS_REFERENCE (field->type)) {
1858 MonoClass *field_class = mono_class_from_mono_type (field->type);
1860 mono_class_setup_fields (field_class);
1861 if (mono_class_has_failure (field_class)) {
1862 MonoError field_error;
1863 mono_error_init (&field_error);
1864 mono_error_set_for_class_failure (&field_error, field_class);
1865 mono_class_set_type_load_failure (klass, "Could not set up field '%s' due to: %s", field->name, mono_error_get_message (&field_error));
1866 mono_error_cleanup (&field_error);
1870 if (!field_class || !field_class->blittable)
1874 if (klass->enumtype)
1875 blittable = klass->element_class->blittable;
1877 if (mono_class_has_failure (klass))
1879 if (klass == mono_defaults.string_class)
1882 /* Compute klass->has_references */
1884 * Process non-static fields first, since static fields might recursively
1885 * refer to the class itself.
1887 for (i = 0; i < top; i++) {
1890 field = &klass->fields [i];
1892 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
1893 ftype = mono_type_get_underlying_type (field->type);
1894 ftype = mono_type_get_basic_type_from_generic (ftype);
1895 if (type_has_references (klass, ftype))
1896 has_references = TRUE;
1901 * Compute field layout and total size (not considering static fields)
1903 field_offsets = g_new0 (int, top);
1904 fields_has_references = g_new0 (gboolean, top);
1905 int first_field_idx = mono_class_has_static_metadata (klass) ? mono_class_get_first_field_idx (klass) : 0;
1907 case TYPE_ATTRIBUTE_AUTO_LAYOUT:
1908 case TYPE_ATTRIBUTE_SEQUENTIAL_LAYOUT:
1909 if (gc_aware_layout)
1914 if (layout != TYPE_ATTRIBUTE_AUTO_LAYOUT)
1917 if (klass->parent) {
1918 mono_class_setup_fields (klass->parent);
1919 if (mono_class_set_type_load_failure_causedby_class (klass, klass->parent, "Cannot initialize parent class"))
1921 real_size = klass->parent->instance_size;
1923 real_size = sizeof (MonoObject);
1926 for (pass = 0; pass < passes; ++pass) {
1927 for (i = 0; i < top; i++){
1932 field = &klass->fields [i];
1934 if (mono_field_is_deleted (field))
1936 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
1939 ftype = mono_type_get_underlying_type (field->type);
1940 ftype = mono_type_get_basic_type_from_generic (ftype);
1941 if (gc_aware_layout) {
1942 fields_has_references [i] = type_has_references (klass, ftype);
1943 if (fields_has_references [i]) {
1952 if ((top == 1) && (instance_size == sizeof (MonoObject)) &&
1953 (strcmp (mono_field_get_name (field), "$PRIVATE$") == 0)) {
1954 /* This field is a hack inserted by MCS to empty structures */
1958 size = mono_type_size (field->type, &align);
1960 /* FIXME (LAMESPEC): should we also change the min alignment according to pack? */
1961 align = packing_size ? MIN (packing_size, align): align;
1962 /* if the field has managed references, we need to force-align it
1965 if (type_has_references (klass, ftype))
1966 align = MAX (align, sizeof (gpointer));
1968 min_align = MAX (align, min_align);
1969 field_offsets [i] = real_size;
1971 field_offsets [i] += align - 1;
1972 field_offsets [i] &= ~(align - 1);
1974 /*TypeBuilders produce all sort of weird things*/
1975 g_assert (image_is_dynamic (klass->image) || field_offsets [i] > 0);
1976 real_size = field_offsets [i] + size;
1979 /* Make SIMD types as big as a SIMD register since they can be stored into using simd stores */
1980 if (klass->simd_type)
1981 real_size = MAX (real_size, sizeof (MonoObject) + 16);
1982 instance_size = MAX (real_size, instance_size);
1984 if (instance_size & (min_align - 1)) {
1985 instance_size += min_align - 1;
1986 instance_size &= ~(min_align - 1);
1990 case TYPE_ATTRIBUTE_EXPLICIT_LAYOUT: {
1994 for (i = 0; i < top; i++) {
1999 field = &klass->fields [i];
2002 * There must be info about all the fields in a type if it
2003 * uses explicit layout.
2005 if (mono_field_is_deleted (field))
2007 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
2010 size = mono_type_size (field->type, &align);
2011 align = packing_size ? MIN (packing_size, align): align;
2012 min_align = MAX (align, min_align);
2015 /* Already set by typebuilder_setup_fields () */
2016 field_offsets [i] = field->offset + sizeof (MonoObject);
2018 int idx = first_field_idx + i;
2020 mono_metadata_field_info (klass->image, idx, &offset, NULL, NULL);
2021 field_offsets [i] = offset + sizeof (MonoObject);
2023 ftype = mono_type_get_underlying_type (field->type);
2024 ftype = mono_type_get_basic_type_from_generic (ftype);
2025 if (type_has_references (klass, ftype)) {
2026 if (field_offsets [i] % sizeof (gpointer)) {
2027 mono_class_set_type_load_failure (klass, "Reference typed field '%s' has explicit offset that is not pointer-size aligned.", field->name);
2034 real_size = MAX (real_size, size + field_offsets [i]);
2037 if (klass->has_references) {
2038 ref_bitmap = g_new0 (guint8, real_size / sizeof (gpointer));
2040 /* Check for overlapping reference and non-reference fields */
2041 for (i = 0; i < top; i++) {
2044 field = &klass->fields [i];
2046 if (mono_field_is_deleted (field))
2048 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
2050 ftype = mono_type_get_underlying_type (field->type);
2051 if (MONO_TYPE_IS_REFERENCE (ftype))
2052 ref_bitmap [field_offsets [i] / sizeof (gpointer)] = 1;
2054 for (i = 0; i < top; i++) {
2055 field = &klass->fields [i];
2057 if (mono_field_is_deleted (field))
2059 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
2062 // FIXME: Too much code does this
2064 if (!MONO_TYPE_IS_REFERENCE (field->type) && ref_bitmap [field_offsets [i] / sizeof (gpointer)]) {
2065 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]);
2069 g_free (ref_bitmap);
2072 instance_size = MAX (real_size, instance_size);
2073 if (instance_size & (min_align - 1)) {
2074 instance_size += min_align - 1;
2075 instance_size &= ~(min_align - 1);
2081 if (layout != TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) {
2083 * This leads to all kinds of problems with nested structs, so only
2084 * enable it when a MONO_DEBUG property is set.
2086 * For small structs, set min_align to at least the struct size to improve
2087 * performance, and since the JIT memset/memcpy code assumes this and generates
2088 * unaligned accesses otherwise. See #78990 for a testcase.
2090 if (mono_align_small_structs && top) {
2091 if (instance_size <= sizeof (MonoObject) + sizeof (gpointer))
2092 min_align = MAX (min_align, instance_size - sizeof (MonoObject));
2096 if (klass->byval_arg.type == MONO_TYPE_VAR || klass->byval_arg.type == MONO_TYPE_MVAR)
2097 instance_size = sizeof (MonoObject) + mono_type_stack_size_internal (&klass->byval_arg, NULL, TRUE);
2098 else if (klass->byval_arg.type == MONO_TYPE_PTR)
2099 instance_size = sizeof (MonoObject) + sizeof (gpointer);
2101 /* Publish the data */
2102 mono_loader_lock ();
2103 if (klass->instance_size && !klass->image->dynamic) {
2104 /* Might be already set using cached info */
2105 if (klass->instance_size != instance_size) {
2106 /* Emit info to help debugging */
2107 g_print ("%s\n", mono_class_full_name (klass));
2108 g_print ("%d %d %d %d\n", klass->instance_size, instance_size, klass->blittable, blittable);
2109 g_print ("%d %d %d %d\n", klass->has_references, has_references, klass->packing_size, packing_size);
2110 g_print ("%d %d\n", klass->min_align, min_align);
2111 for (i = 0; i < top; ++i) {
2112 field = &klass->fields [i];
2113 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC))
2114 printf (" %s %d %d %d\n", klass->fields [i].name, klass->fields [i].offset, field_offsets [i], fields_has_references [i]);
2117 g_assert (klass->instance_size == instance_size);
2119 klass->instance_size = instance_size;
2121 klass->blittable = blittable;
2122 klass->has_references = has_references;
2123 klass->packing_size = packing_size;
2124 klass->min_align = min_align;
2125 for (i = 0; i < top; ++i) {
2126 field = &klass->fields [i];
2127 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC))
2128 klass->fields [i].offset = field_offsets [i];
2131 mono_memory_barrier ();
2132 klass->size_inited = 1;
2133 mono_loader_unlock ();
2136 * Compute static field layout and size
2137 * Static fields can reference the class itself, so this has to be
2138 * done after instance_size etc. are initialized.
2141 for (i = 0; i < top; i++) {
2145 field = &klass->fields [i];
2147 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC) || field->type->attrs & FIELD_ATTRIBUTE_LITERAL)
2149 if (mono_field_is_deleted (field))
2152 if (mono_type_has_exceptions (field->type)) {
2153 mono_class_set_type_load_failure (klass, "Field '%s' has an invalid type.", field->name);
2157 has_static_fields = TRUE;
2159 size = mono_type_size (field->type, &align);
2160 field_offsets [i] = class_size;
2161 /*align is always non-zero here*/
2162 field_offsets [i] += align - 1;
2163 field_offsets [i] &= ~(align - 1);
2164 class_size = field_offsets [i] + size;
2167 if (has_static_fields && class_size == 0)
2168 /* Simplify code which depends on class_size != 0 if the class has static fields */
2171 /* Compute klass->has_static_refs */
2172 has_static_refs = FALSE;
2173 for (i = 0; i < top; i++) {
2176 field = &klass->fields [i];
2178 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC) {
2179 ftype = mono_type_get_underlying_type (field->type);
2180 ftype = mono_type_get_basic_type_from_generic (ftype);
2181 if (type_has_references (klass, ftype))
2182 has_static_refs = TRUE;
2186 /*valuetypes can't be neither bigger than 1Mb or empty. */
2187 if (klass->valuetype && (klass->instance_size <= 0 || klass->instance_size > (0x100000 + sizeof (MonoObject))))
2188 mono_class_set_type_load_failure (klass, "Value type instance size (%d) cannot be zero, negative, or bigger than 1Mb", klass->instance_size);
2190 /* Publish the data */
2191 mono_loader_lock ();
2193 klass->sizes.class_size = class_size;
2194 klass->has_static_refs = has_static_refs;
2195 for (i = 0; i < top; ++i) {
2196 field = &klass->fields [i];
2198 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
2199 field->offset = field_offsets [i];
2202 mono_memory_barrier ();
2203 klass->fields_inited = 1;
2204 mono_loader_unlock ();
2206 g_free (field_offsets);
2207 g_free (fields_has_references);
2211 create_array_method (MonoClass *klass, const char *name, MonoMethodSignature *sig)
2215 method = (MonoMethod *) mono_image_alloc0 (klass->image, sizeof (MonoMethodPInvoke));
2216 method->klass = klass;
2217 method->flags = METHOD_ATTRIBUTE_PUBLIC;
2218 method->iflags = METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL;
2219 method->signature = sig;
2220 method->name = name;
2223 if (name [0] == '.') {
2224 method->flags |= METHOD_ATTRIBUTE_RT_SPECIAL_NAME | METHOD_ATTRIBUTE_SPECIAL_NAME;
2226 method->iflags |= METHOD_IMPL_ATTRIBUTE_RUNTIME;
2232 * mono_class_setup_methods:
2235 * Initializes the 'methods' array in CLASS.
2236 * Calling this method should be avoided if possible since it allocates a lot
2237 * of long-living MonoMethod structures.
2238 * Methods belonging to an interface are assigned a sequential slot starting
2241 * On failure this function sets klass->has_failure and stores a MonoErrorBoxed with details
2244 mono_class_setup_methods (MonoClass *klass)
2247 MonoMethod **methods;
2252 if (mono_class_is_ginst (klass)) {
2254 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
2256 mono_class_init (gklass);
2257 if (!mono_class_has_failure (gklass))
2258 mono_class_setup_methods (gklass);
2259 if (mono_class_set_type_load_failure_causedby_class (klass, gklass, "Generic type definition failed to load"))
2262 /* The + 1 makes this always non-NULL to pass the check in mono_class_setup_methods () */
2263 count = mono_class_get_method_count (gklass);
2264 methods = (MonoMethod **)mono_class_alloc0 (klass, sizeof (MonoMethod*) * (count + 1));
2266 for (i = 0; i < count; i++) {
2267 methods [i] = mono_class_inflate_generic_method_full_checked (
2268 gklass->methods [i], klass, mono_class_get_context (klass), &error);
2269 if (!mono_error_ok (&error)) {
2270 char *method = mono_method_full_name (gklass->methods [i], TRUE);
2271 mono_class_set_type_load_failure (klass, "Could not inflate method %s due to %s", method, mono_error_get_message (&error));
2274 mono_error_cleanup (&error);
2278 } else if (klass->rank) {
2280 MonoMethod *amethod;
2281 MonoMethodSignature *sig;
2282 int count_generic = 0, first_generic = 0;
2284 gboolean jagged_ctor = FALSE;
2286 count = 3 + (klass->rank > 1? 2: 1);
2288 mono_class_setup_interfaces (klass, &error);
2289 g_assert (mono_error_ok (&error)); /*FIXME can this fail for array types?*/
2291 if (klass->rank == 1 && klass->element_class->rank) {
2296 if (klass->interface_count) {
2297 count_generic = generic_array_methods (klass);
2298 first_generic = count;
2299 count += klass->interface_count * count_generic;
2302 methods = (MonoMethod **)mono_class_alloc0 (klass, sizeof (MonoMethod*) * count);
2304 sig = mono_metadata_signature_alloc (klass->image, klass->rank);
2305 sig->ret = &mono_defaults.void_class->byval_arg;
2306 sig->pinvoke = TRUE;
2307 sig->hasthis = TRUE;
2308 for (i = 0; i < klass->rank; ++i)
2309 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2311 amethod = create_array_method (klass, ".ctor", sig);
2312 methods [method_num++] = amethod;
2313 if (klass->rank > 1) {
2314 sig = mono_metadata_signature_alloc (klass->image, klass->rank * 2);
2315 sig->ret = &mono_defaults.void_class->byval_arg;
2316 sig->pinvoke = TRUE;
2317 sig->hasthis = TRUE;
2318 for (i = 0; i < klass->rank * 2; ++i)
2319 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2321 amethod = create_array_method (klass, ".ctor", sig);
2322 methods [method_num++] = amethod;
2326 /* Jagged arrays have an extra ctor in .net which creates an array of arrays */
2327 sig = mono_metadata_signature_alloc (klass->image, klass->rank + 1);
2328 sig->ret = &mono_defaults.void_class->byval_arg;
2329 sig->pinvoke = TRUE;
2330 sig->hasthis = TRUE;
2331 for (i = 0; i < klass->rank + 1; ++i)
2332 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2333 amethod = create_array_method (klass, ".ctor", sig);
2334 methods [method_num++] = amethod;
2337 /* element Get (idx11, [idx2, ...]) */
2338 sig = mono_metadata_signature_alloc (klass->image, klass->rank);
2339 sig->ret = &klass->element_class->byval_arg;
2340 sig->pinvoke = TRUE;
2341 sig->hasthis = TRUE;
2342 for (i = 0; i < klass->rank; ++i)
2343 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2344 amethod = create_array_method (klass, "Get", sig);
2345 methods [method_num++] = amethod;
2346 /* element& Address (idx11, [idx2, ...]) */
2347 sig = mono_metadata_signature_alloc (klass->image, klass->rank);
2348 sig->ret = &klass->element_class->this_arg;
2349 sig->pinvoke = TRUE;
2350 sig->hasthis = TRUE;
2351 for (i = 0; i < klass->rank; ++i)
2352 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2353 amethod = create_array_method (klass, "Address", sig);
2354 methods [method_num++] = amethod;
2355 /* void Set (idx11, [idx2, ...], element) */
2356 sig = mono_metadata_signature_alloc (klass->image, klass->rank + 1);
2357 sig->ret = &mono_defaults.void_class->byval_arg;
2358 sig->pinvoke = TRUE;
2359 sig->hasthis = TRUE;
2360 for (i = 0; i < klass->rank; ++i)
2361 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2362 sig->params [i] = &klass->element_class->byval_arg;
2363 amethod = create_array_method (klass, "Set", sig);
2364 methods [method_num++] = amethod;
2366 GHashTable *cache = g_hash_table_new (NULL, NULL);
2367 for (i = 0; i < klass->interface_count; i++)
2368 setup_generic_array_ifaces (klass, klass->interfaces [i], methods, first_generic + i * count_generic, cache);
2369 g_hash_table_destroy (cache);
2370 } else if (mono_class_has_static_metadata (klass)) {
2372 int first_idx = mono_class_get_first_method_idx (klass);
2374 count = mono_class_get_method_count (klass);
2375 methods = (MonoMethod **)mono_class_alloc (klass, sizeof (MonoMethod*) * count);
2376 for (i = 0; i < count; ++i) {
2377 int idx = mono_metadata_translate_token_index (klass->image, MONO_TABLE_METHOD, first_idx + i + 1);
2378 methods [i] = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | idx, klass, NULL, &error);
2380 mono_class_set_type_load_failure (klass, "Could not load method %d due to %s", i, mono_error_get_message (&error));
2381 mono_error_cleanup (&error);
2385 methods = (MonoMethod **)mono_class_alloc (klass, sizeof (MonoMethod*) * 1);
2389 if (MONO_CLASS_IS_INTERFACE (klass)) {
2391 /*Only assign slots to virtual methods as interfaces are allowed to have static methods.*/
2392 for (i = 0; i < count; ++i) {
2393 if (methods [i]->flags & METHOD_ATTRIBUTE_VIRTUAL)
2394 methods [i]->slot = slot++;
2398 mono_image_lock (klass->image);
2400 if (!klass->methods) {
2401 mono_class_set_method_count (klass, count);
2403 /* Needed because of the double-checking locking pattern */
2404 mono_memory_barrier ();
2406 klass->methods = methods;
2409 mono_image_unlock (klass->image);
2413 * mono_class_get_method_by_index:
2415 * Returns klass->methods [index], initializing klass->methods if neccesary.
2417 * LOCKING: Acquires the loader lock.
2420 mono_class_get_method_by_index (MonoClass *klass, int index)
2424 MonoGenericClass *gklass = mono_class_try_get_generic_class (klass);
2425 /* Avoid calling setup_methods () if possible */
2426 if (gklass && !klass->methods) {
2429 m = mono_class_inflate_generic_method_full_checked (
2430 gklass->container_class->methods [index], klass, mono_class_get_context (klass), &error);
2431 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
2433 * If setup_methods () is called later for this class, no duplicates are created,
2434 * since inflate_generic_method guarantees that only one instance of a method
2435 * is created for each context.
2438 mono_class_setup_methods (klass);
2439 g_assert (m == klass->methods [index]);
2443 mono_class_setup_methods (klass);
2444 if (mono_class_has_failure (klass)) /*FIXME do proper error handling*/
2446 g_assert (index >= 0 && index < mono_class_get_method_count (klass));
2447 return klass->methods [index];
2452 * mono_class_get_inflated_method:
2454 * Given an inflated class CLASS and a method METHOD which should be a method of
2455 * CLASS's generic definition, return the inflated method corresponding to METHOD.
2458 mono_class_get_inflated_method (MonoClass *klass, MonoMethod *method)
2460 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
2463 g_assert (method->klass == gklass);
2465 mono_class_setup_methods (gklass);
2466 g_assert (!mono_class_has_failure (gklass)); /*FIXME do proper error handling*/
2468 mcount = mono_class_get_method_count (gklass);
2469 for (i = 0; i < mcount; ++i) {
2470 if (gklass->methods [i] == method) {
2471 if (klass->methods) {
2472 return klass->methods [i];
2475 MonoMethod *result = mono_class_inflate_generic_method_full_checked (gklass->methods [i], klass, mono_class_get_context (klass), &error);
2476 g_assert (mono_error_ok (&error)); /* FIXME don't swallow this error */
2486 * mono_class_get_vtable_entry:
2488 * Returns klass->vtable [offset], computing it if neccesary. Returns NULL on failure.
2489 * LOCKING: Acquires the loader lock.
2492 mono_class_get_vtable_entry (MonoClass *klass, int offset)
2496 if (klass->rank == 1) {
2498 * szarrays do not overwrite any methods of Array, so we can avoid
2499 * initializing their vtables in some cases.
2501 mono_class_setup_vtable (klass->parent);
2502 if (offset < klass->parent->vtable_size)
2503 return klass->parent->vtable [offset];
2506 if (mono_class_is_ginst (klass)) {
2508 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
2509 mono_class_setup_vtable (gklass);
2510 m = gklass->vtable [offset];
2512 m = mono_class_inflate_generic_method_full_checked (m, klass, mono_class_get_context (klass), &error);
2513 g_assert (mono_error_ok (&error)); /* FIXME don't swallow this error */
2515 mono_class_setup_vtable (klass);
2516 if (mono_class_has_failure (klass))
2518 m = klass->vtable [offset];
2525 * mono_class_get_vtable_size:
2527 * Return the vtable size for KLASS.
2530 mono_class_get_vtable_size (MonoClass *klass)
2532 mono_class_setup_vtable (klass);
2534 return klass->vtable_size;
2538 * mono_class_setup_properties:
2540 * Initialize klass->ext.property and klass->ext.properties.
2542 * This method can fail the class.
2545 mono_class_setup_properties (MonoClass *klass)
2547 guint startm, endm, i, j;
2548 guint32 cols [MONO_PROPERTY_SIZE];
2549 MonoTableInfo *msemt = &klass->image->tables [MONO_TABLE_METHODSEMANTICS];
2550 MonoProperty *properties;
2553 MonoClassPropertyInfo *info;
2555 info = mono_class_get_property_info (klass);
2559 if (mono_class_is_ginst (klass)) {
2560 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
2562 mono_class_init (gklass);
2563 mono_class_setup_properties (gklass);
2564 if (mono_class_set_type_load_failure_causedby_class (klass, gklass, "Generic type definition failed to load"))
2567 MonoClassPropertyInfo *ginfo = mono_class_get_property_info (gklass);
2568 properties = mono_class_new0 (klass, MonoProperty, ginfo->count + 1);
2570 for (i = 0; i < ginfo->count; i++) {
2572 MonoProperty *prop = &properties [i];
2574 *prop = ginfo->properties [i];
2577 prop->get = mono_class_inflate_generic_method_full_checked (
2578 prop->get, klass, mono_class_get_context (klass), &error);
2580 prop->set = mono_class_inflate_generic_method_full_checked (
2581 prop->set, klass, mono_class_get_context (klass), &error);
2583 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
2584 prop->parent = klass;
2587 first = ginfo->first;
2588 count = ginfo->count;
2590 first = mono_metadata_properties_from_typedef (klass->image, mono_metadata_token_index (klass->type_token) - 1, &last);
2591 count = last - first;
2594 mono_class_setup_methods (klass);
2595 if (mono_class_has_failure (klass))
2599 properties = (MonoProperty *)mono_class_alloc0 (klass, sizeof (MonoProperty) * count);
2600 for (i = first; i < last; ++i) {
2601 mono_metadata_decode_table_row (klass->image, MONO_TABLE_PROPERTY, i, cols, MONO_PROPERTY_SIZE);
2602 properties [i - first].parent = klass;
2603 properties [i - first].attrs = cols [MONO_PROPERTY_FLAGS];
2604 properties [i - first].name = mono_metadata_string_heap (klass->image, cols [MONO_PROPERTY_NAME]);
2606 startm = mono_metadata_methods_from_property (klass->image, i, &endm);
2607 int first_idx = mono_class_get_first_method_idx (klass);
2608 for (j = startm; j < endm; ++j) {
2611 mono_metadata_decode_row (msemt, j, cols, MONO_METHOD_SEMA_SIZE);
2613 if (klass->image->uncompressed_metadata) {
2615 /* It seems like the MONO_METHOD_SEMA_METHOD column needs no remapping */
2616 method = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | cols [MONO_METHOD_SEMA_METHOD], klass, NULL, &error);
2617 mono_error_cleanup (&error); /* FIXME don't swallow this error */
2619 method = klass->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - first_idx];
2622 switch (cols [MONO_METHOD_SEMA_SEMANTICS]) {
2623 case METHOD_SEMANTIC_SETTER:
2624 properties [i - first].set = method;
2626 case METHOD_SEMANTIC_GETTER:
2627 properties [i - first].get = method;
2636 info = mono_class_alloc0 (klass, sizeof (MonoClassPropertyInfo));
2637 info->first = first;
2638 info->count = count;
2639 info->properties = properties;
2640 mono_memory_barrier ();
2642 /* This might leak 'info' which was allocated from the image mempool */
2643 mono_class_set_property_info (klass, info);
2647 inflate_method_listz (MonoMethod **methods, MonoClass *klass, MonoGenericContext *context)
2649 MonoMethod **om, **retval;
2652 for (om = methods, count = 0; *om; ++om, ++count)
2655 retval = g_new0 (MonoMethod*, count + 1);
2657 for (om = methods, count = 0; *om; ++om, ++count) {
2659 retval [count] = mono_class_inflate_generic_method_full_checked (*om, klass, context, &error);
2660 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
2666 /*This method can fail the class.*/
2668 mono_class_setup_events (MonoClass *klass)
2671 guint startm, endm, i, j;
2672 guint32 cols [MONO_EVENT_SIZE];
2673 MonoTableInfo *msemt = &klass->image->tables [MONO_TABLE_METHODSEMANTICS];
2677 MonoClassEventInfo *info = mono_class_get_event_info (klass);
2681 if (mono_class_is_ginst (klass)) {
2682 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
2683 MonoGenericContext *context = NULL;
2685 mono_class_setup_events (gklass);
2686 if (mono_class_set_type_load_failure_causedby_class (klass, gklass, "Generic type definition failed to load"))
2689 MonoClassEventInfo *ginfo = mono_class_get_event_info (gklass);
2690 first = ginfo->first;
2691 count = ginfo->count;
2693 events = mono_class_new0 (klass, MonoEvent, count);
2696 context = mono_class_get_context (klass);
2698 for (i = 0; i < count; i++) {
2700 MonoEvent *event = &events [i];
2701 MonoEvent *gevent = &ginfo->events [i];
2703 mono_error_init (&error); //since we do conditional calls, we must ensure the default value is ok
2705 event->parent = klass;
2706 event->name = gevent->name;
2707 event->add = gevent->add ? mono_class_inflate_generic_method_full_checked (gevent->add, klass, context, &error) : NULL;
2708 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
2709 event->remove = gevent->remove ? mono_class_inflate_generic_method_full_checked (gevent->remove, klass, context, &error) : NULL;
2710 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
2711 event->raise = gevent->raise ? mono_class_inflate_generic_method_full_checked (gevent->raise, klass, context, &error) : NULL;
2712 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
2714 #ifndef MONO_SMALL_CONFIG
2715 event->other = gevent->other ? inflate_method_listz (gevent->other, klass, context) : NULL;
2717 event->attrs = gevent->attrs;
2720 first = mono_metadata_events_from_typedef (klass->image, mono_metadata_token_index (klass->type_token) - 1, &last);
2721 count = last - first;
2724 mono_class_setup_methods (klass);
2725 if (mono_class_has_failure (klass)) {
2730 events = (MonoEvent *)mono_class_alloc0 (klass, sizeof (MonoEvent) * count);
2731 for (i = first; i < last; ++i) {
2732 MonoEvent *event = &events [i - first];
2734 mono_metadata_decode_table_row (klass->image, MONO_TABLE_EVENT, i, cols, MONO_EVENT_SIZE);
2735 event->parent = klass;
2736 event->attrs = cols [MONO_EVENT_FLAGS];
2737 event->name = mono_metadata_string_heap (klass->image, cols [MONO_EVENT_NAME]);
2739 startm = mono_metadata_methods_from_event (klass->image, i, &endm);
2740 int first_idx = mono_class_get_first_method_idx (klass);
2741 for (j = startm; j < endm; ++j) {
2744 mono_metadata_decode_row (msemt, j, cols, MONO_METHOD_SEMA_SIZE);
2746 if (klass->image->uncompressed_metadata) {
2748 /* It seems like the MONO_METHOD_SEMA_METHOD column needs no remapping */
2749 method = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | cols [MONO_METHOD_SEMA_METHOD], klass, NULL, &error);
2750 mono_error_cleanup (&error); /* FIXME don't swallow this error */
2752 method = klass->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - first_idx];
2755 switch (cols [MONO_METHOD_SEMA_SEMANTICS]) {
2756 case METHOD_SEMANTIC_ADD_ON:
2757 event->add = method;
2759 case METHOD_SEMANTIC_REMOVE_ON:
2760 event->remove = method;
2762 case METHOD_SEMANTIC_FIRE:
2763 event->raise = method;
2765 case METHOD_SEMANTIC_OTHER: {
2766 #ifndef MONO_SMALL_CONFIG
2769 if (event->other == NULL) {
2770 event->other = g_new0 (MonoMethod*, 2);
2772 while (event->other [n])
2774 event->other = (MonoMethod **)g_realloc (event->other, (n + 2) * sizeof (MonoMethod*));
2776 event->other [n] = method;
2777 /* NULL terminated */
2778 event->other [n + 1] = NULL;
2789 info = mono_class_alloc0 (klass, sizeof (MonoClassEventInfo));
2790 info->events = events;
2791 info->first = first;
2792 info->count = count;
2794 mono_memory_barrier ();
2796 mono_class_set_event_info (klass, info);
2800 * Global pool of interface IDs, represented as a bitset.
2801 * LOCKING: Protected by the classes lock.
2803 static MonoBitSet *global_interface_bitset = NULL;
2806 * mono_unload_interface_ids:
2807 * @bitset: bit set of interface IDs
2809 * When an image is unloaded, the interface IDs associated with
2810 * the image are put back in the global pool of IDs so the numbers
2814 mono_unload_interface_ids (MonoBitSet *bitset)
2817 mono_bitset_sub (global_interface_bitset, bitset);
2822 mono_unload_interface_id (MonoClass *klass)
2824 if (global_interface_bitset && klass->interface_id) {
2826 mono_bitset_clear (global_interface_bitset, klass->interface_id);
2832 * mono_get_unique_iid:
2835 * Assign a unique integer ID to the interface represented by @class.
2836 * The ID will positive and as small as possible.
2837 * LOCKING: Acquires the classes lock.
2838 * Returns: The new ID.
2841 mono_get_unique_iid (MonoClass *klass)
2845 g_assert (MONO_CLASS_IS_INTERFACE (klass));
2849 if (!global_interface_bitset) {
2850 global_interface_bitset = mono_bitset_new (128, 0);
2853 iid = mono_bitset_find_first_unset (global_interface_bitset, -1);
2855 int old_size = mono_bitset_size (global_interface_bitset);
2856 MonoBitSet *new_set = mono_bitset_clone (global_interface_bitset, old_size * 2);
2857 mono_bitset_free (global_interface_bitset);
2858 global_interface_bitset = new_set;
2861 mono_bitset_set (global_interface_bitset, iid);
2862 /* set the bit also in the per-image set */
2863 if (!mono_class_is_ginst (klass)) {
2864 if (klass->image->interface_bitset) {
2865 if (iid >= mono_bitset_size (klass->image->interface_bitset)) {
2866 MonoBitSet *new_set = mono_bitset_clone (klass->image->interface_bitset, iid + 1);
2867 mono_bitset_free (klass->image->interface_bitset);
2868 klass->image->interface_bitset = new_set;
2871 klass->image->interface_bitset = mono_bitset_new (iid + 1, 0);
2873 mono_bitset_set (klass->image->interface_bitset, iid);
2878 #ifndef MONO_SMALL_CONFIG
2879 if (mono_print_vtable) {
2881 char *type_name = mono_type_full_name (&klass->byval_arg);
2882 MonoGenericClass *gklass = mono_class_try_get_generic_class (klass);
2883 if (gklass && !gklass->context.class_inst->is_open) {
2884 generic_id = gklass->context.class_inst->id;
2885 g_assert (generic_id != 0);
2889 printf ("Interface: assigned id %d to %s|%s|%d\n", iid, klass->image->name, type_name, generic_id);
2894 /* I've confirmed iids safe past 16 bits, however bitset code uses a signed int while testing.
2895 * Once this changes, it should be safe for us to allow 2^32-1 interfaces, until then 2^31-2 is the max. */
2896 g_assert (iid < INT_MAX);
2901 collect_implemented_interfaces_aux (MonoClass *klass, GPtrArray **res, GHashTable **ifaces, MonoError *error)
2906 mono_class_setup_interfaces (klass, error);
2907 return_if_nok (error);
2909 for (i = 0; i < klass->interface_count; i++) {
2910 ic = klass->interfaces [i];
2913 *res = g_ptr_array_new ();
2914 if (*ifaces == NULL)
2915 *ifaces = g_hash_table_new (NULL, NULL);
2916 if (g_hash_table_lookup (*ifaces, ic))
2918 g_ptr_array_add (*res, ic);
2919 g_hash_table_insert (*ifaces, ic, ic);
2920 mono_class_init (ic);
2921 if (mono_class_has_failure (ic)) {
2922 mono_error_set_type_load_class (error, ic, "Error Loading class");
2926 collect_implemented_interfaces_aux (ic, res, ifaces, error);
2927 return_if_nok (error);
2932 mono_class_get_implemented_interfaces (MonoClass *klass, MonoError *error)
2934 GPtrArray *res = NULL;
2935 GHashTable *ifaces = NULL;
2937 collect_implemented_interfaces_aux (klass, &res, &ifaces, error);
2939 g_hash_table_destroy (ifaces);
2940 if (!mono_error_ok (error)) {
2942 g_ptr_array_free (res, TRUE);
2949 compare_interface_ids (const void *p_key, const void *p_element)
2951 const MonoClass *key = (const MonoClass *)p_key;
2952 const MonoClass *element = *(const MonoClass **)p_element;
2954 return (key->interface_id - element->interface_id);
2957 /*FIXME verify all callers if they should switch to mono_class_interface_offset_with_variance*/
2959 mono_class_interface_offset (MonoClass *klass, MonoClass *itf)
2961 MonoClass **result = (MonoClass **)mono_binary_search (
2963 klass->interfaces_packed,
2964 klass->interface_offsets_count,
2965 sizeof (MonoClass *),
2966 compare_interface_ids);
2968 return klass->interface_offsets_packed [result - (klass->interfaces_packed)];
2975 * mono_class_interface_offset_with_variance:
2977 * Return the interface offset of @itf in @klass. Sets @non_exact_match to TRUE if the match required variance check
2978 * If @itf is an interface with generic variant arguments, try to find the compatible one.
2980 * Note that this function is responsible for resolving ambiguities. Right now we use whatever ordering interfaces_packed gives us.
2982 * FIXME figure out MS disambiguation rules and fix this function.
2985 mono_class_interface_offset_with_variance (MonoClass *klass, MonoClass *itf, gboolean *non_exact_match)
2987 int i = mono_class_interface_offset (klass, itf);
2988 *non_exact_match = FALSE;
2992 if (itf->is_array_special_interface && klass->rank < 2) {
2993 MonoClass *gtd = mono_class_get_generic_type_definition (itf);
2995 for (i = 0; i < klass->interface_offsets_count; i++) {
2996 // printf ("\t%s\n", mono_type_get_full_name (klass->interfaces_packed [i]));
2997 if (mono_class_get_generic_type_definition (klass->interfaces_packed [i]) == gtd) {
2998 *non_exact_match = TRUE;
2999 return klass->interface_offsets_packed [i];
3004 if (!mono_class_has_variant_generic_params (itf))
3007 for (i = 0; i < klass->interface_offsets_count; i++) {
3008 if (mono_class_is_variant_compatible (itf, klass->interfaces_packed [i], FALSE)) {
3009 *non_exact_match = TRUE;
3010 return klass->interface_offsets_packed [i];
3018 print_implemented_interfaces (MonoClass *klass)
3022 GPtrArray *ifaces = NULL;
3024 int ancestor_level = 0;
3026 name = mono_type_get_full_name (klass);
3027 printf ("Packed interface table for class %s has size %d\n", name, klass->interface_offsets_count);
3030 for (i = 0; i < klass->interface_offsets_count; i++)
3031 printf (" [%03d][UUID %03d][SLOT %03d][SIZE %03d] interface %s.%s\n", i,
3032 klass->interfaces_packed [i]->interface_id,
3033 klass->interface_offsets_packed [i],
3034 mono_class_get_method_count (klass->interfaces_packed [i]),
3035 klass->interfaces_packed [i]->name_space,
3036 klass->interfaces_packed [i]->name );
3037 printf ("Interface flags: ");
3038 for (i = 0; i <= klass->max_interface_id; i++)
3039 if (MONO_CLASS_IMPLEMENTS_INTERFACE (klass, i))
3040 printf ("(%d,T)", i);
3042 printf ("(%d,F)", i);
3044 printf ("Dump interface flags:");
3045 #ifdef COMPRESSED_INTERFACE_BITMAP
3047 const uint8_t* p = klass->interface_bitmap;
3048 i = klass->max_interface_id;
3050 printf (" %d x 00 %02X", p [0], p [1]);
3056 for (i = 0; i < ((((klass->max_interface_id + 1) >> 3)) + (((klass->max_interface_id + 1) & 7)? 1 :0)); i++)
3057 printf (" %02X", klass->interface_bitmap [i]);
3060 while (klass != NULL) {
3061 printf ("[LEVEL %d] Implemented interfaces by class %s:\n", ancestor_level, klass->name);
3062 ifaces = mono_class_get_implemented_interfaces (klass, &error);
3063 if (!mono_error_ok (&error)) {
3064 printf (" Type failed due to %s\n", mono_error_get_message (&error));
3065 mono_error_cleanup (&error);
3066 } else if (ifaces) {
3067 for (i = 0; i < ifaces->len; i++) {
3068 MonoClass *ic = (MonoClass *)g_ptr_array_index (ifaces, i);
3069 printf (" [UIID %d] interface %s\n", ic->interface_id, ic->name);
3070 printf (" [%03d][UUID %03d][SLOT %03d][SIZE %03d] interface %s.%s\n", i,
3072 mono_class_interface_offset (klass, ic),
3073 mono_class_get_method_count (ic),
3077 g_ptr_array_free (ifaces, TRUE);
3080 klass = klass->parent;
3085 * Return the number of virtual methods.
3086 * Even for interfaces we can't simply return the number of methods as all CLR types are allowed to have static methods.
3087 * Return -1 on failure.
3088 * FIXME It would be nice if this information could be cached somewhere.
3091 count_virtual_methods (MonoClass *klass)
3093 int i, mcount, vcount = 0;
3095 klass = mono_class_get_generic_type_definition (klass); /*We can find this information by looking at the GTD*/
3097 if (klass->methods || !MONO_CLASS_HAS_STATIC_METADATA (klass)) {
3098 mono_class_setup_methods (klass);
3099 if (mono_class_has_failure (klass))
3102 mcount = mono_class_get_method_count (klass);
3103 for (i = 0; i < mcount; ++i) {
3104 flags = klass->methods [i]->flags;
3105 if (flags & METHOD_ATTRIBUTE_VIRTUAL)
3109 int first_idx = mono_class_get_first_method_idx (klass);
3110 mcount = mono_class_get_method_count (klass);
3111 for (i = 0; i < mcount; ++i) {
3112 flags = mono_metadata_decode_table_row_col (klass->image, MONO_TABLE_METHOD, first_idx + i, MONO_METHOD_FLAGS);
3114 if (flags & METHOD_ATTRIBUTE_VIRTUAL)
3122 find_interface (int num_ifaces, MonoClass **interfaces_full, MonoClass *ic)
3130 m = (l + num_ifaces) / 2;
3131 if (interfaces_full [m] == ic)
3133 if (l == num_ifaces)
3135 if (!interfaces_full [m] || interfaces_full [m]->interface_id > ic->interface_id) {
3144 set_interface_and_offset (int num_ifaces, MonoClass **interfaces_full, int *interface_offsets_full, MonoClass *ic, int offset, mono_bool force_set)
3146 int i = find_interface (num_ifaces, interfaces_full, ic);
3150 interface_offsets_full [i] = offset;
3153 for (i = 0; i < num_ifaces; ++i) {
3154 if (interfaces_full [i]) {
3156 if (interfaces_full [i]->interface_id < ic->interface_id)
3159 while (end < num_ifaces && interfaces_full [end]) end++;
3160 memmove (interfaces_full + i + 1, interfaces_full + i, sizeof (MonoClass*) * (end - i));
3161 memmove (interface_offsets_full + i + 1, interface_offsets_full + i, sizeof (int) * (end - i));
3163 interfaces_full [i] = ic;
3164 interface_offsets_full [i] = offset;
3170 #ifdef COMPRESSED_INTERFACE_BITMAP
3173 * Compressed interface bitmap design.
3175 * Interface bitmaps take a large amount of memory, because their size is
3176 * linear with the maximum interface id assigned in the process (each interface
3177 * is assigned a unique id as it is loaded). The number of interface classes
3178 * is high because of the many implicit interfaces implemented by arrays (we'll
3179 * need to lazy-load them in the future).
3180 * Most classes implement a very small number of interfaces, so the bitmap is
3181 * sparse. This bitmap needs to be checked by interface casts, so access to the
3182 * needed bit must be fast and doable with few jit instructions.
3184 * The current compression format is as follows:
3185 * *) it is a sequence of one or more two-byte elements
3186 * *) the first byte in the element is the count of empty bitmap bytes
3187 * at the current bitmap position
3188 * *) the second byte in the element is an actual bitmap byte at the current
3191 * As an example, the following compressed bitmap bytes:
3192 * 0x07 0x01 0x00 0x7
3193 * correspond to the following bitmap:
3194 * 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x01 0x07
3196 * Each two-byte element can represent up to 2048 bitmap bits, but as few as a single
3197 * bitmap byte for non-sparse sequences. In practice the interface bitmaps created
3198 * during a gmcs bootstrap are reduced to less tha 5% of the original size.
3202 * mono_compress_bitmap:
3203 * @dest: destination buffer
3204 * @bitmap: bitmap buffer
3205 * @size: size of @bitmap in bytes
3207 * This is a mono internal function.
3208 * The @bitmap data is compressed into a format that is small but
3209 * still searchable in few instructions by the JIT and runtime.
3210 * The compressed data is stored in the buffer pointed to by the
3211 * @dest array. Passing a #NULL value for @dest allows to just compute
3212 * the size of the buffer.
3213 * This compression algorithm assumes the bits set in the bitmap are
3214 * few and far between, like in interface bitmaps.
3215 * Returns: The size of the compressed bitmap in bytes.
3218 mono_compress_bitmap (uint8_t *dest, const uint8_t *bitmap, int size)
3222 const uint8_t *end = bitmap + size;
3223 while (bitmap < end) {
3224 if (*bitmap || numz == 255) {
3248 * mono_class_interface_match:
3249 * @bitmap: a compressed bitmap buffer
3250 * @id: the index to check in the bitmap
3252 * This is a mono internal function.
3253 * Checks if a bit is set in a compressed interface bitmap. @id must
3254 * be already checked for being smaller than the maximum id encoded in the
3257 * Returns: A non-zero value if bit @id is set in the bitmap @bitmap,
3261 mono_class_interface_match (const uint8_t *bitmap, int id)
3264 id -= bitmap [0] * 8;
3268 return bitmap [1] & (1 << id);
3277 * Return -1 on failure and set klass->has_failure and store a MonoErrorBoxed with the details.
3278 * LOCKING: Acquires the loader lock.
3281 setup_interface_offsets (MonoClass *klass, int cur_slot, gboolean overwrite)
3285 int i, j, num_ifaces;
3287 MonoClass **interfaces_full = NULL;
3288 int *interface_offsets_full = NULL;
3290 GPtrArray **ifaces_array = NULL;
3291 int interface_offsets_count;
3293 mono_loader_lock ();
3295 mono_class_setup_supertypes (klass);
3297 /* compute maximum number of slots and maximum interface id */
3299 num_ifaces = 0; /* this can include duplicated ones */
3300 ifaces_array = g_new0 (GPtrArray *, klass->idepth);
3301 for (j = 0; j < klass->idepth; j++) {
3302 k = klass->supertypes [j];
3304 num_ifaces += k->interface_count;
3305 for (i = 0; i < k->interface_count; i++) {
3306 ic = k->interfaces [i];
3308 mono_class_init (ic);
3310 if (max_iid < ic->interface_id)
3311 max_iid = ic->interface_id;
3313 ifaces = mono_class_get_implemented_interfaces (k, &error);
3314 if (!mono_error_ok (&error)) {
3315 char *name = mono_type_get_full_name (k);
3316 mono_class_set_type_load_failure (klass, "Error getting the interfaces of %s due to %s", name, mono_error_get_message (&error));
3318 mono_error_cleanup (&error);
3323 num_ifaces += ifaces->len;
3324 for (i = 0; i < ifaces->len; ++i) {
3325 ic = (MonoClass *)g_ptr_array_index (ifaces, i);
3326 if (max_iid < ic->interface_id)
3327 max_iid = ic->interface_id;
3329 ifaces_array [j] = ifaces;
3333 if (MONO_CLASS_IS_INTERFACE (klass)) {
3335 if (max_iid < klass->interface_id)
3336 max_iid = klass->interface_id;
3339 /* compute vtable offset for interfaces */
3340 interfaces_full = (MonoClass **)g_malloc0 (sizeof (MonoClass*) * num_ifaces);
3341 interface_offsets_full = (int *)g_malloc (sizeof (int) * num_ifaces);
3343 for (i = 0; i < num_ifaces; i++)
3344 interface_offsets_full [i] = -1;
3346 /* skip the current class */
3347 for (j = 0; j < klass->idepth - 1; j++) {
3348 k = klass->supertypes [j];
3349 ifaces = ifaces_array [j];
3352 for (i = 0; i < ifaces->len; ++i) {
3354 ic = (MonoClass *)g_ptr_array_index (ifaces, i);
3356 /*Force the sharing of interface offsets between parent and subtypes.*/
3357 io = mono_class_interface_offset (k, ic);
3359 set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, ic, io, TRUE);
3364 g_assert (klass == klass->supertypes [klass->idepth - 1]);
3365 ifaces = ifaces_array [klass->idepth - 1];
3367 for (i = 0; i < ifaces->len; ++i) {
3369 ic = (MonoClass *)g_ptr_array_index (ifaces, i);
3370 if (set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, ic, cur_slot, FALSE))
3372 count = count_virtual_methods (ic);
3374 char *name = mono_type_get_full_name (ic);
3375 mono_class_set_type_load_failure (klass, "Error calculating interface offset of %s", name);
3384 if (MONO_CLASS_IS_INTERFACE (klass))
3385 set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, klass, cur_slot, TRUE);
3387 for (interface_offsets_count = 0, i = 0; i < num_ifaces; i++) {
3388 if (interface_offsets_full [i] != -1)
3389 interface_offsets_count ++;
3392 /* Publish the data */
3393 klass->max_interface_id = max_iid;
3395 * We might get called multiple times:
3396 * - mono_class_init ()
3397 * - mono_class_setup_vtable ().
3398 * - mono_class_setup_interface_offsets ().
3399 * mono_class_setup_interface_offsets () passes 0 as CUR_SLOT, so the computed interface offsets will be invalid. This
3400 * means we have to overwrite those when called from other places (#4440).
3402 if (klass->interfaces_packed) {
3404 g_assert (klass->interface_offsets_count == interface_offsets_count);
3408 klass->interface_offsets_count = interface_offsets_count;
3409 klass->interfaces_packed = (MonoClass **)mono_class_alloc (klass, sizeof (MonoClass*) * interface_offsets_count);
3410 klass->interface_offsets_packed = (guint16 *)mono_class_alloc (klass, sizeof (guint16) * interface_offsets_count);
3411 bsize = (sizeof (guint8) * ((max_iid + 1) >> 3)) + (((max_iid + 1) & 7)? 1 :0);
3412 #ifdef COMPRESSED_INTERFACE_BITMAP
3413 bitmap = g_malloc0 (bsize);
3415 bitmap = (uint8_t *)mono_class_alloc0 (klass, bsize);
3417 for (i = 0; i < interface_offsets_count; i++) {
3418 guint32 id = interfaces_full [i]->interface_id;
3419 bitmap [id >> 3] |= (1 << (id & 7));
3420 klass->interfaces_packed [i] = interfaces_full [i];
3421 klass->interface_offsets_packed [i] = interface_offsets_full [i];
3423 #ifdef COMPRESSED_INTERFACE_BITMAP
3424 i = mono_compress_bitmap (NULL, bitmap, bsize);
3425 klass->interface_bitmap = mono_class_alloc0 (klass, i);
3426 mono_compress_bitmap (klass->interface_bitmap, bitmap, bsize);
3429 klass->interface_bitmap = bitmap;
3433 mono_loader_unlock ();
3435 g_free (interfaces_full);
3436 g_free (interface_offsets_full);
3437 for (i = 0; i < klass->idepth; i++) {
3438 ifaces = ifaces_array [i];
3440 g_ptr_array_free (ifaces, TRUE);
3442 g_free (ifaces_array);
3444 //printf ("JUST DONE: ");
3445 //print_implemented_interfaces (klass);
3451 * Setup interface offsets for interfaces.
3453 * - klass->max_interface_id
3454 * - klass->interface_offsets_count
3455 * - klass->interfaces_packed
3456 * - klass->interface_offsets_packed
3457 * - klass->interface_bitmap
3459 * This function can fail @class.
3462 mono_class_setup_interface_offsets (MonoClass *klass)
3464 setup_interface_offsets (klass, 0, FALSE);
3467 /*Checks if @klass has @parent as one of it's parents type gtd
3471 * Bar<T> : Foo<Bar<Bar<T>>>
3475 mono_class_has_gtd_parent (MonoClass *klass, MonoClass *parent)
3477 klass = mono_class_get_generic_type_definition (klass);
3478 parent = mono_class_get_generic_type_definition (parent);
3479 mono_class_setup_supertypes (klass);
3480 mono_class_setup_supertypes (parent);
3482 return klass->idepth >= parent->idepth &&
3483 mono_class_get_generic_type_definition (klass->supertypes [parent->idepth - 1]) == parent;
3487 mono_class_check_vtable_constraints (MonoClass *klass, GList *in_setup)
3489 MonoGenericInst *ginst;
3492 if (!mono_class_is_ginst (klass)) {
3493 mono_class_setup_vtable_full (klass, in_setup);
3494 return !mono_class_has_failure (klass);
3497 mono_class_setup_vtable_full (mono_class_get_generic_type_definition (klass), in_setup);
3498 if (mono_class_set_type_load_failure_causedby_class (klass, mono_class_get_generic_class (klass)->container_class, "Failed to load generic definition vtable"))
3501 ginst = mono_class_get_generic_class (klass)->context.class_inst;
3502 for (i = 0; i < ginst->type_argc; ++i) {
3504 if (ginst->type_argv [i]->type != MONO_TYPE_GENERICINST)
3506 arg = mono_class_from_mono_type (ginst->type_argv [i]);
3507 /*Those 2 will be checked by mono_class_setup_vtable itself*/
3508 if (mono_class_has_gtd_parent (klass, arg) || mono_class_has_gtd_parent (arg, klass))
3510 if (!mono_class_check_vtable_constraints (arg, in_setup)) {
3511 mono_class_set_type_load_failure (klass, "Failed to load generic parameter %d", i);
3519 * mono_class_setup_vtable:
3521 * Creates the generic vtable of CLASS.
3522 * Initializes the following fields in MonoClass:
3525 * Plus all the fields initialized by setup_interface_offsets ().
3526 * If there is an error during vtable construction, klass->has_failure
3527 * is set and details are stored in a MonoErrorBoxed.
3529 * LOCKING: Acquires the loader lock.
3532 mono_class_setup_vtable (MonoClass *klass)
3534 mono_class_setup_vtable_full (klass, NULL);
3538 mono_class_setup_vtable_full (MonoClass *klass, GList *in_setup)
3541 MonoMethod **overrides;
3542 MonoGenericContext *context;
3550 if (MONO_CLASS_IS_INTERFACE (klass)) {
3551 /* This sets method->slot for all methods if this is an interface */
3552 mono_class_setup_methods (klass);
3556 if (mono_class_has_failure (klass))
3559 if (g_list_find (in_setup, klass))
3562 mono_loader_lock ();
3564 if (klass->vtable) {
3565 mono_loader_unlock ();
3569 mono_stats.generic_vtable_count ++;
3570 in_setup = g_list_prepend (in_setup, klass);
3572 if (mono_class_is_ginst (klass)) {
3573 if (!mono_class_check_vtable_constraints (klass, in_setup)) {
3574 mono_loader_unlock ();
3575 g_list_remove (in_setup, klass);
3579 context = mono_class_get_context (klass);
3580 type_token = mono_class_get_generic_class (klass)->container_class->type_token;
3582 context = (MonoGenericContext *) mono_class_try_get_generic_container (klass); //FIXME is this a case of a try?
3583 type_token = klass->type_token;
3586 if (image_is_dynamic (klass->image)) {
3587 /* Generic instances can have zero method overrides without causing any harm.
3588 * This is true since we don't do layout all over again for them, we simply inflate
3589 * the layout of the parent.
3591 mono_reflection_get_dynamic_overrides (klass, &overrides, &onum, &error);
3592 if (!is_ok (&error)) {
3593 mono_loader_unlock ();
3594 g_list_remove (in_setup, klass);
3595 mono_class_set_type_load_failure (klass, "Could not load list of method overrides due to %s", mono_error_get_message (&error));
3596 mono_error_cleanup (&error);
3600 /* The following call fails if there are missing methods in the type */
3601 /* FIXME it's probably a good idea to avoid this for generic instances. */
3602 ok = mono_class_get_overrides_full (klass->image, type_token, &overrides, &onum, context);
3606 mono_class_setup_vtable_general (klass, overrides, onum, in_setup);
3608 mono_class_set_type_load_failure (klass, "Could not load list of method overrides");
3612 mono_loader_unlock ();
3613 g_list_remove (in_setup, klass);
3618 #define DEBUG_INTERFACE_VTABLE_CODE 0
3619 #define TRACE_INTERFACE_VTABLE_CODE 0
3620 #define VERIFY_INTERFACE_VTABLE_CODE 0
3621 #define VTABLE_SELECTOR (1)
3623 #if (TRACE_INTERFACE_VTABLE_CODE|DEBUG_INTERFACE_VTABLE_CODE)
3624 #define DEBUG_INTERFACE_VTABLE(stmt) do {\
3625 if (!(VTABLE_SELECTOR)) break; \
3629 #define DEBUG_INTERFACE_VTABLE(stmt)
3632 #if TRACE_INTERFACE_VTABLE_CODE
3633 #define TRACE_INTERFACE_VTABLE(stmt) do {\
3634 if (!(VTABLE_SELECTOR)) break; \
3638 #define TRACE_INTERFACE_VTABLE(stmt)
3641 #if VERIFY_INTERFACE_VTABLE_CODE
3642 #define VERIFY_INTERFACE_VTABLE(stmt) do {\
3643 if (!(VTABLE_SELECTOR)) break; \
3647 #define VERIFY_INTERFACE_VTABLE(stmt)
3651 #if (TRACE_INTERFACE_VTABLE_CODE|DEBUG_INTERFACE_VTABLE_CODE)
3653 mono_signature_get_full_desc (MonoMethodSignature *sig, gboolean include_namespace)
3657 GString *res = g_string_new ("");
3659 g_string_append_c (res, '(');
3660 for (i = 0; i < sig->param_count; ++i) {
3662 g_string_append_c (res, ',');
3663 mono_type_get_desc (res, sig->params [i], include_namespace);
3665 g_string_append (res, ")=>");
3666 if (sig->ret != NULL) {
3667 mono_type_get_desc (res, sig->ret, include_namespace);
3669 g_string_append (res, "NULL");
3672 g_string_free (res, FALSE);
3676 print_method_signatures (MonoMethod *im, MonoMethod *cm) {
3677 char *im_sig = mono_signature_get_full_desc (mono_method_signature (im), TRUE);
3678 char *cm_sig = mono_signature_get_full_desc (mono_method_signature (cm), TRUE);
3679 printf ("(IM \"%s\", CM \"%s\")", im_sig, cm_sig);
3687 is_wcf_hack_disabled (void)
3689 static gboolean disabled;
3690 static gboolean inited = FALSE;
3692 disabled = g_getenv ("MONO_DISABLE_WCF_HACK") != NULL;
3699 check_interface_method_override (MonoClass *klass, MonoMethod *im, MonoMethod *cm, gboolean require_newslot, gboolean interface_is_explicitly_implemented_by_class, gboolean slot_is_empty)
3701 MonoMethodSignature *cmsig, *imsig;
3702 if (strcmp (im->name, cm->name) == 0) {
3703 if (! (cm->flags & METHOD_ATTRIBUTE_PUBLIC)) {
3704 TRACE_INTERFACE_VTABLE (printf ("[PUBLIC CHECK FAILED]"));
3707 if (! slot_is_empty) {
3708 if (require_newslot) {
3709 if (! interface_is_explicitly_implemented_by_class) {
3710 TRACE_INTERFACE_VTABLE (printf ("[NOT EXPLICIT IMPLEMENTATION IN FULL SLOT REFUSED]"));
3713 if (! (cm->flags & METHOD_ATTRIBUTE_NEW_SLOT)) {
3714 TRACE_INTERFACE_VTABLE (printf ("[NEWSLOT CHECK FAILED]"));
3718 TRACE_INTERFACE_VTABLE (printf ("[FULL SLOT REFUSED]"));
3721 cmsig = mono_method_signature (cm);
3722 imsig = mono_method_signature (im);
3723 if (!cmsig || !imsig) {
3724 mono_class_set_type_load_failure (klass, "Could not resolve the signature of a virtual method");
3728 if (! mono_metadata_signature_equal (cmsig, imsig)) {
3729 TRACE_INTERFACE_VTABLE (printf ("[SIGNATURE CHECK FAILED "));
3730 TRACE_INTERFACE_VTABLE (print_method_signatures (im, cm));
3731 TRACE_INTERFACE_VTABLE (printf ("]"));
3734 TRACE_INTERFACE_VTABLE (printf ("[SECURITY CHECKS]"));
3735 if (mono_security_core_clr_enabled ())
3736 mono_security_core_clr_check_override (klass, cm, im);
3738 TRACE_INTERFACE_VTABLE (printf ("[NAME CHECK OK]"));
3739 if (is_wcf_hack_disabled () && !mono_method_can_access_method_full (cm, im, NULL)) {
3740 char *body_name = mono_method_full_name (cm, TRUE);
3741 char *decl_name = mono_method_full_name (im, TRUE);
3742 mono_class_set_type_load_failure (klass, "Method %s overrides method '%s' which is not accessible", body_name, decl_name);
3750 MonoClass *ic = im->klass;
3751 const char *ic_name_space = ic->name_space;
3752 const char *ic_name = ic->name;
3755 if (! require_newslot) {
3756 TRACE_INTERFACE_VTABLE (printf ("[INJECTED METHOD REFUSED]"));
3759 if (cm->klass->rank == 0) {
3760 TRACE_INTERFACE_VTABLE (printf ("[RANK CHECK FAILED]"));
3763 cmsig = mono_method_signature (cm);
3764 imsig = mono_method_signature (im);
3765 if (!cmsig || !imsig) {
3766 mono_class_set_type_load_failure (klass, "Could not resolve the signature of a virtual method");
3770 if (! mono_metadata_signature_equal (cmsig, imsig)) {
3771 TRACE_INTERFACE_VTABLE (printf ("[(INJECTED) SIGNATURE CHECK FAILED "));
3772 TRACE_INTERFACE_VTABLE (print_method_signatures (im, cm));
3773 TRACE_INTERFACE_VTABLE (printf ("]"));
3776 if (mono_class_get_image (ic) != mono_defaults.corlib) {
3777 TRACE_INTERFACE_VTABLE (printf ("[INTERFACE CORLIB CHECK FAILED]"));
3780 if ((ic_name_space == NULL) || (strcmp (ic_name_space, "System.Collections.Generic") != 0)) {
3781 TRACE_INTERFACE_VTABLE (printf ("[INTERFACE NAMESPACE CHECK FAILED]"));
3784 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))) {
3785 TRACE_INTERFACE_VTABLE (printf ("[INTERFACE NAME CHECK FAILED]"));
3789 subname = strstr (cm->name, ic_name_space);
3790 if (subname != cm->name) {
3791 TRACE_INTERFACE_VTABLE (printf ("[ACTUAL NAMESPACE CHECK FAILED]"));
3794 subname += strlen (ic_name_space);
3795 if (subname [0] != '.') {
3796 TRACE_INTERFACE_VTABLE (printf ("[FIRST DOT CHECK FAILED]"));
3800 if (strstr (subname, ic_name) != subname) {
3801 TRACE_INTERFACE_VTABLE (printf ("[ACTUAL CLASS NAME CHECK FAILED]"));
3804 subname += strlen (ic_name);
3805 if (subname [0] != '.') {
3806 TRACE_INTERFACE_VTABLE (printf ("[SECOND DOT CHECK FAILED]"));
3810 if (strcmp (subname, im->name) != 0) {
3811 TRACE_INTERFACE_VTABLE (printf ("[METHOD NAME CHECK FAILED]"));
3815 TRACE_INTERFACE_VTABLE (printf ("[SECURITY CHECKS (INJECTED CASE)]"));
3816 if (mono_security_core_clr_enabled ())
3817 mono_security_core_clr_check_override (klass, cm, im);
3819 TRACE_INTERFACE_VTABLE (printf ("[INJECTED INTERFACE CHECK OK]"));
3820 if (is_wcf_hack_disabled () && !mono_method_can_access_method_full (cm, im, NULL)) {
3821 char *body_name = mono_method_full_name (cm, TRUE);
3822 char *decl_name = mono_method_full_name (im, TRUE);
3823 mono_class_set_type_load_failure (klass, "Method %s overrides method '%s' which is not accessible", body_name, decl_name);
3833 #if (TRACE_INTERFACE_VTABLE_CODE|DEBUG_INTERFACE_VTABLE_CODE)
3835 foreach_override (gpointer key, gpointer value, gpointer user_data) {
3836 MonoMethod *method = key;
3837 MonoMethod *override = value;
3838 MonoClass *method_class = mono_method_get_class (method);
3839 MonoClass *override_class = mono_method_get_class (override);
3841 printf (" Method '%s.%s:%s' has override '%s.%s:%s'\n",
3842 mono_class_get_namespace (method_class), mono_class_get_name (method_class), mono_method_get_name (method),
3843 mono_class_get_namespace (override_class), mono_class_get_name (override_class), mono_method_get_name (override));
3846 print_overrides (GHashTable *override_map, const char *message) {
3848 printf ("Override map \"%s\" START:\n", message);
3849 g_hash_table_foreach (override_map, foreach_override, NULL);
3850 printf ("Override map \"%s\" END.\n", message);
3852 printf ("Override map \"%s\" EMPTY.\n", message);
3856 print_vtable_full (MonoClass *klass, MonoMethod** vtable, int size, int first_non_interface_slot, const char *message, gboolean print_interfaces) {
3857 char *full_name = mono_type_full_name (&klass->byval_arg);
3861 printf ("*** Vtable for class '%s' at \"%s\" (size %d)\n", full_name, message, size);
3863 if (print_interfaces) {
3864 print_implemented_interfaces (klass);
3865 printf ("* Interfaces for class '%s' done.\nStarting vtable (size %d):\n", full_name, size);
3868 if (klass->parent) {
3869 parent_size = klass->parent->vtable_size;
3873 for (i = 0; i < size; ++i) {
3874 MonoMethod *cm = vtable [i];
3875 char *cm_name = cm ? mono_method_full_name (cm, TRUE) : g_strdup ("nil");
3876 char newness = (i < parent_size) ? 'O' : ((i < first_non_interface_slot) ? 'I' : 'N');
3878 printf (" [%c][%03d][INDEX %03d] %s [%p]\n", newness, i, cm ? cm->slot : - 1, cm_name, cm);
3886 #if VERIFY_INTERFACE_VTABLE_CODE
3888 mono_method_try_get_vtable_index (MonoMethod *method)
3890 if (method->is_inflated && (method->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
3891 MonoMethodInflated *imethod = (MonoMethodInflated*)method;
3892 if (imethod->declaring->is_generic)
3893 return imethod->declaring->slot;
3895 return method->slot;
3899 mono_class_verify_vtable (MonoClass *klass)
3902 char *full_name = mono_type_full_name (&klass->byval_arg);
3904 printf ("*** Verifying VTable of class '%s' \n", full_name);
3908 if (!klass->methods)
3911 count = mono_class_method_count (klass);
3912 for (i = 0; i < count; ++i) {
3913 MonoMethod *cm = klass->methods [i];
3916 if (!(cm->flags & METHOD_ATTRIBUTE_VIRTUAL))
3920 full_name = mono_method_full_name (cm, TRUE);
3922 slot = mono_method_try_get_vtable_index (cm);
3924 if (slot >= klass->vtable_size) {
3925 printf ("\tInvalid method %s at index %d with vtable of length %d\n", full_name, slot, klass->vtable_size);
3929 if (slot >= 0 && klass->vtable [slot] != cm && (klass->vtable [slot])) {
3930 char *other_name = klass->vtable [slot] ? mono_method_full_name (klass->vtable [slot], TRUE) : g_strdup ("[null value]");
3931 printf ("\tMethod %s has slot %d but vtable has %s on it\n", full_name, slot, other_name);
3932 g_free (other_name);
3935 printf ("\tVirtual method %s does n't have an assigned slot\n", full_name);
3942 print_unimplemented_interface_method_info (MonoClass *klass, MonoClass *ic, MonoMethod *im, int im_slot, MonoMethod **overrides, int onum)
3945 char *method_signature;
3948 for (index = 0; index < onum; ++index) {
3949 mono_trace_warning (MONO_TRACE_TYPE, " at slot %d: %s (%d) overrides %s (%d)", im_slot, overrides [index*2+1]->name,
3950 overrides [index*2+1]->slot, overrides [index*2]->name, overrides [index*2]->slot);
3952 method_signature = mono_signature_get_desc (mono_method_signature (im), FALSE);
3953 type_name = mono_type_full_name (&klass->byval_arg);
3954 mono_trace_warning (MONO_TRACE_TYPE, "no implementation for interface method %s::%s(%s) in class %s",
3955 mono_type_get_name (&ic->byval_arg), im->name, method_signature, type_name);
3956 g_free (method_signature);
3958 mono_class_setup_methods (klass);
3959 if (mono_class_has_failure (klass)) {
3960 char *name = mono_type_get_full_name (klass);
3961 mono_trace_warning (MONO_TRACE_TYPE, "CLASS %s failed to resolve methods", name);
3965 mcount = mono_class_get_method_count (klass);
3966 for (index = 0; index < mcount; ++index) {
3967 MonoMethod *cm = klass->methods [index];
3968 method_signature = mono_signature_get_desc (mono_method_signature (cm), TRUE);
3970 mono_trace_warning (MONO_TRACE_TYPE, "METHOD %s(%s)", cm->name, method_signature);
3971 g_free (method_signature);
3976 mono_method_get_method_definition (MonoMethod *method)
3978 while (method->is_inflated)
3979 method = ((MonoMethodInflated*)method)->declaring;
3984 verify_class_overrides (MonoClass *klass, MonoMethod **overrides, int onum)
3988 for (i = 0; i < onum; ++i) {
3989 MonoMethod *decl = overrides [i * 2];
3990 MonoMethod *body = overrides [i * 2 + 1];
3992 if (mono_class_get_generic_type_definition (body->klass) != mono_class_get_generic_type_definition (klass)) {
3993 mono_class_set_type_load_failure (klass, "Method belongs to a different class than the declared one");
3997 if (!(body->flags & METHOD_ATTRIBUTE_VIRTUAL) || (body->flags & METHOD_ATTRIBUTE_STATIC)) {
3998 if (body->flags & METHOD_ATTRIBUTE_STATIC)
3999 mono_class_set_type_load_failure (klass, "Method must not be static to override a base type");
4001 mono_class_set_type_load_failure (klass, "Method must be virtual to override a base type");
4005 if (!(decl->flags & METHOD_ATTRIBUTE_VIRTUAL) || (decl->flags & METHOD_ATTRIBUTE_STATIC)) {
4006 if (body->flags & METHOD_ATTRIBUTE_STATIC)
4007 mono_class_set_type_load_failure (klass, "Cannot override a static method in a base type");
4009 mono_class_set_type_load_failure (klass, "Cannot override a non virtual method in a base type");
4013 if (!mono_class_is_assignable_from_slow (decl->klass, klass)) {
4014 mono_class_set_type_load_failure (klass, "Method overrides a class or interface that is not extended or implemented by this type");
4018 body = mono_method_get_method_definition (body);
4019 decl = mono_method_get_method_definition (decl);
4021 if (is_wcf_hack_disabled () && !mono_method_can_access_method_full (body, decl, NULL)) {
4022 char *body_name = mono_method_full_name (body, TRUE);
4023 char *decl_name = mono_method_full_name (decl, TRUE);
4024 mono_class_set_type_load_failure (klass, "Method %s overrides method '%s' which is not accessible", body_name, decl_name);
4034 mono_class_need_stelemref_method (MonoClass *klass)
4036 return klass->rank == 1 && MONO_TYPE_IS_REFERENCE (&klass->element_class->byval_arg);
4040 * LOCKING: this is supposed to be called with the loader lock held.
4043 mono_class_setup_vtable_general (MonoClass *klass, MonoMethod **overrides, int onum, GList *in_setup)
4047 MonoMethod **vtable = NULL;
4048 int i, max_vtsize = 0, cur_slot = 0;
4050 GPtrArray *ifaces = NULL;
4051 GHashTable *override_map = NULL;
4053 #if (DEBUG_INTERFACE_VTABLE_CODE|TRACE_INTERFACE_VTABLE_CODE)
4054 int first_non_interface_slot;
4056 GSList *virt_methods = NULL, *l;
4057 int stelemref_slot = 0;
4062 if (overrides && !verify_class_overrides (klass, overrides, onum))
4065 ifaces = mono_class_get_implemented_interfaces (klass, &error);
4066 if (!mono_error_ok (&error)) {
4067 char *name = mono_type_get_full_name (klass);
4068 mono_class_set_type_load_failure (klass, "Could not resolve %s interfaces due to %s", name, mono_error_get_message (&error));
4070 mono_error_cleanup (&error);
4072 } else if (ifaces) {
4073 for (i = 0; i < ifaces->len; i++) {
4074 MonoClass *ic = (MonoClass *)g_ptr_array_index (ifaces, i);
4075 max_vtsize += mono_class_get_method_count (ic);
4077 g_ptr_array_free (ifaces, TRUE);
4081 if (klass->parent) {
4082 mono_class_init (klass->parent);
4083 mono_class_setup_vtable_full (klass->parent, in_setup);
4085 if (mono_class_set_type_load_failure_causedby_class (klass, klass->parent, "Parent class failed to load"))
4088 max_vtsize += klass->parent->vtable_size;
4089 cur_slot = klass->parent->vtable_size;
4092 max_vtsize += mono_class_get_method_count (klass);
4094 /*Array have a slot for stelemref*/
4095 if (mono_class_need_stelemref_method (klass)) {
4096 stelemref_slot = cur_slot;
4101 /* printf ("METAINIT %s.%s\n", klass->name_space, klass->name); */
4103 cur_slot = setup_interface_offsets (klass, cur_slot, TRUE);
4104 if (cur_slot == -1) /*setup_interface_offsets fails the type.*/
4107 max_iid = klass->max_interface_id;
4108 DEBUG_INTERFACE_VTABLE (first_non_interface_slot = cur_slot);
4110 /* Optimized version for generic instances */
4111 if (mono_class_is_ginst (klass)) {
4113 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
4116 mono_class_setup_vtable_full (gklass, in_setup);
4117 if (mono_class_set_type_load_failure_causedby_class (klass, gklass, "Could not load generic definition"))
4120 tmp = (MonoMethod **)mono_class_alloc0 (klass, sizeof (gpointer) * gklass->vtable_size);
4121 klass->vtable_size = gklass->vtable_size;
4122 for (i = 0; i < gklass->vtable_size; ++i)
4123 if (gklass->vtable [i]) {
4124 MonoMethod *inflated = mono_class_inflate_generic_method_full_checked (gklass->vtable [i], klass, mono_class_get_context (klass), &error);
4125 if (!mono_error_ok (&error)) {
4126 mono_class_set_type_load_failure (klass, "Could not inflate method due to %s", mono_error_get_message (&error));
4127 mono_error_cleanup (&error);
4131 tmp [i]->slot = gklass->vtable [i]->slot;
4133 mono_memory_barrier ();
4134 klass->vtable = tmp;
4136 /* Have to set method->slot for abstract virtual methods */
4137 if (klass->methods && gklass->methods) {
4138 int mcount = mono_class_get_method_count (klass);
4139 for (i = 0; i < mcount; ++i)
4140 if (klass->methods [i]->slot == -1)
4141 klass->methods [i]->slot = gklass->methods [i]->slot;
4147 vtable = (MonoMethod **)g_malloc0 (sizeof (gpointer) * max_vtsize);
4149 if (klass->parent && klass->parent->vtable_size) {
4150 MonoClass *parent = klass->parent;
4153 memcpy (vtable, parent->vtable, sizeof (gpointer) * parent->vtable_size);
4155 // Also inherit parent interface vtables, just as a starting point.
4156 // This is needed otherwise bug-77127.exe fails when the property methods
4157 // have different names in the iterface and the class, because for child
4158 // classes the ".override" information is not used anymore.
4159 for (i = 0; i < parent->interface_offsets_count; i++) {
4160 MonoClass *parent_interface = parent->interfaces_packed [i];
4161 int interface_offset = mono_class_interface_offset (klass, parent_interface);
4162 /*FIXME this is now dead code as this condition will never hold true.
4163 Since interface offsets are inherited then the offset of an interface implemented
4164 by a parent will never be the out of it's vtable boundary.
4166 if (interface_offset >= parent->vtable_size) {
4167 int parent_interface_offset = mono_class_interface_offset (parent, parent_interface);
4170 mono_class_setup_methods (parent_interface); /*FIXME Just kill this whole chunk of dead code*/
4171 TRACE_INTERFACE_VTABLE (printf (" +++ Inheriting interface %s.%s\n", parent_interface->name_space, parent_interface->name));
4172 int mcount = mono_class_get_method_count (parent_interface);
4173 for (j = 0; j < mcount && !mono_class_has_failure (klass); j++) {
4174 vtable [interface_offset + j] = parent->vtable [parent_interface_offset + j];
4175 TRACE_INTERFACE_VTABLE (printf (" --- Inheriting: [%03d][(%03d)+(%03d)] => [%03d][(%03d)+(%03d)]\n",
4176 parent_interface_offset + j, parent_interface_offset, j,
4177 interface_offset + j, interface_offset, j));
4184 /*Array have a slot for stelemref*/
4185 if (mono_class_need_stelemref_method (klass)) {
4186 MonoMethod *method = mono_marshal_get_virtual_stelemref (klass);
4188 method->slot = stelemref_slot;
4190 g_assert (method->slot == stelemref_slot);
4192 vtable [stelemref_slot] = method;
4195 TRACE_INTERFACE_VTABLE (print_vtable_full (klass, vtable, cur_slot, first_non_interface_slot, "AFTER INHERITING PARENT VTABLE", TRUE));
4196 /* override interface methods */
4197 for (i = 0; i < onum; i++) {
4198 MonoMethod *decl = overrides [i*2];
4199 if (MONO_CLASS_IS_INTERFACE (decl->klass)) {
4201 dslot = mono_method_get_vtable_slot (decl);
4203 mono_class_set_type_load_failure (klass, "");
4207 dslot += mono_class_interface_offset (klass, decl->klass);
4208 vtable [dslot] = overrides [i*2 + 1];
4209 vtable [dslot]->slot = dslot;
4211 override_map = g_hash_table_new (mono_aligned_addr_hash, NULL);
4213 g_hash_table_insert (override_map, overrides [i * 2], overrides [i * 2 + 1]);
4215 if (mono_security_core_clr_enabled ())
4216 mono_security_core_clr_check_override (klass, vtable [dslot], decl);
4219 TRACE_INTERFACE_VTABLE (print_overrides (override_map, "AFTER OVERRIDING INTERFACE METHODS"));
4220 TRACE_INTERFACE_VTABLE (print_vtable_full (klass, vtable, cur_slot, first_non_interface_slot, "AFTER OVERRIDING INTERFACE METHODS", FALSE));
4223 * Create a list of virtual methods to avoid calling
4224 * mono_class_get_virtual_methods () which is slow because of the metadata
4228 gpointer iter = NULL;
4231 virt_methods = NULL;
4232 while ((cm = mono_class_get_virtual_methods (klass, &iter))) {
4233 virt_methods = g_slist_prepend (virt_methods, cm);
4235 if (mono_class_has_failure (klass))
4239 // Loop on all implemented interfaces...
4240 for (i = 0; i < klass->interface_offsets_count; i++) {
4241 MonoClass *parent = klass->parent;
4243 gboolean interface_is_explicitly_implemented_by_class;
4246 ic = klass->interfaces_packed [i];
4247 ic_offset = mono_class_interface_offset (klass, ic);
4249 mono_class_setup_methods (ic);
4250 if (mono_class_has_failure (ic))
4253 // Check if this interface is explicitly implemented (instead of just inherited)
4254 if (parent != NULL) {
4255 int implemented_interfaces_index;
4256 interface_is_explicitly_implemented_by_class = FALSE;
4257 for (implemented_interfaces_index = 0; implemented_interfaces_index < klass->interface_count; implemented_interfaces_index++) {
4258 if (ic == klass->interfaces [implemented_interfaces_index]) {
4259 interface_is_explicitly_implemented_by_class = TRUE;
4264 interface_is_explicitly_implemented_by_class = TRUE;
4267 // Loop on all interface methods...
4268 int mcount = mono_class_get_method_count (ic);
4269 for (im_index = 0; im_index < mcount; im_index++) {
4270 MonoMethod *im = ic->methods [im_index];
4271 int im_slot = ic_offset + im->slot;
4272 MonoMethod *override_im = (override_map != NULL) ? (MonoMethod *)g_hash_table_lookup (override_map, im) : NULL;
4274 if (im->flags & METHOD_ATTRIBUTE_STATIC)
4277 TRACE_INTERFACE_VTABLE (printf ("\tchecking iface method %s\n", mono_method_full_name (im,1)));
4279 // If there is an explicit implementation, just use it right away,
4280 // otherwise look for a matching method
4281 if (override_im == NULL) {
4285 // First look for a suitable method among the class methods
4286 for (l = virt_methods; l; l = l->next) {
4287 cm = (MonoMethod *)l->data;
4288 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)));
4289 if (check_interface_method_override (klass, im, cm, TRUE, interface_is_explicitly_implemented_by_class, (vtable [im_slot] == NULL))) {
4290 TRACE_INTERFACE_VTABLE (printf ("[check ok]: ASSIGNING"));
4291 vtable [im_slot] = cm;
4292 /* Why do we need this? */
4297 TRACE_INTERFACE_VTABLE (printf ("\n"));
4298 if (mono_class_has_failure (klass)) /*Might be set by check_interface_method_override*/
4302 // If the slot is still empty, look in all the inherited virtual methods...
4303 if ((vtable [im_slot] == NULL) && klass->parent != NULL) {
4304 MonoClass *parent = klass->parent;
4305 // Reverse order, so that last added methods are preferred
4306 for (cm_index = parent->vtable_size - 1; cm_index >= 0; cm_index--) {
4307 MonoMethod *cm = parent->vtable [cm_index];
4309 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));
4310 if ((cm != NULL) && check_interface_method_override (klass, im, cm, FALSE, FALSE, TRUE)) {
4311 TRACE_INTERFACE_VTABLE (printf ("[everything ok]: ASSIGNING"));
4312 vtable [im_slot] = cm;
4313 /* Why do we need this? */
4319 if (mono_class_has_failure (klass)) /*Might be set by check_interface_method_override*/
4321 TRACE_INTERFACE_VTABLE ((cm != NULL) && printf ("\n"));
4325 g_assert (vtable [im_slot] == override_im);
4330 // If the class is not abstract, check that all its interface slots are full.
4331 // The check is done here and not directly at the end of the loop above because
4332 // it can happen (for injected generic array interfaces) that the same slot is
4333 // processed multiple times (those interfaces have overlapping slots), and it
4334 // will not always be the first pass the one that fills the slot.
4335 if (!mono_class_is_abstract (klass)) {
4336 for (i = 0; i < klass->interface_offsets_count; i++) {
4340 ic = klass->interfaces_packed [i];
4341 ic_offset = mono_class_interface_offset (klass, ic);
4343 int mcount = mono_class_get_method_count (ic);
4344 for (im_index = 0; im_index < mcount; im_index++) {
4345 MonoMethod *im = ic->methods [im_index];
4346 int im_slot = ic_offset + im->slot;
4348 if (im->flags & METHOD_ATTRIBUTE_STATIC)
4351 TRACE_INTERFACE_VTABLE (printf (" [class is not abstract, checking slot %d for interface '%s'.'%s', method %s, slot check is %d]\n",
4352 im_slot, ic->name_space, ic->name, im->name, (vtable [im_slot] == NULL)));
4353 if (vtable [im_slot] == NULL) {
4354 print_unimplemented_interface_method_info (klass, ic, im, im_slot, overrides, onum);
4361 TRACE_INTERFACE_VTABLE (print_vtable_full (klass, vtable, cur_slot, first_non_interface_slot, "AFTER SETTING UP INTERFACE METHODS", FALSE));
4362 for (l = virt_methods; l; l = l->next) {
4363 cm = (MonoMethod *)l->data;
4365 * If the method is REUSE_SLOT, we must check in the
4366 * base class for a method to override.
4368 if (!(cm->flags & METHOD_ATTRIBUTE_NEW_SLOT)) {
4370 for (k = klass->parent; k ; k = k->parent) {
4375 while ((m1 = mono_class_get_virtual_methods (k, &k_iter))) {
4376 MonoMethodSignature *cmsig, *m1sig;
4378 cmsig = mono_method_signature (cm);
4379 m1sig = mono_method_signature (m1);
4381 if (!cmsig || !m1sig) {
4382 /* FIXME proper error message */
4383 mono_class_set_type_load_failure (klass, "");
4387 if (!strcmp(cm->name, m1->name) &&
4388 mono_metadata_signature_equal (cmsig, m1sig)) {
4390 if (mono_security_core_clr_enabled ())
4391 mono_security_core_clr_check_override (klass, cm, m1);
4393 slot = mono_method_get_vtable_slot (m1);
4397 if (is_wcf_hack_disabled () && !mono_method_can_access_method_full (cm, m1, NULL)) {
4398 char *body_name = mono_method_full_name (cm, TRUE);
4399 char *decl_name = mono_method_full_name (m1, TRUE);
4400 mono_class_set_type_load_failure (klass, "Method %s overrides method '%s' which is not accessible", body_name, decl_name);
4406 g_assert (cm->slot < max_vtsize);
4408 override_map = g_hash_table_new (mono_aligned_addr_hash, NULL);
4409 TRACE_INTERFACE_VTABLE (printf ("adding iface override from %s [%p] to %s [%p]\n",
4410 mono_method_full_name (m1, 1), m1,
4411 mono_method_full_name (cm, 1), cm));
4412 g_hash_table_insert (override_map, m1, cm);
4416 if (mono_class_has_failure (k))
4426 /*Non final newslot methods must be given a non-interface vtable slot*/
4427 if ((cm->flags & METHOD_ATTRIBUTE_NEW_SLOT) && !(cm->flags & METHOD_ATTRIBUTE_FINAL) && cm->slot >= 0)
4431 cm->slot = cur_slot++;
4433 if (!(cm->flags & METHOD_ATTRIBUTE_ABSTRACT))
4434 vtable [cm->slot] = cm;
4437 /* override non interface methods */
4438 for (i = 0; i < onum; i++) {
4439 MonoMethod *decl = overrides [i*2];
4440 if (!MONO_CLASS_IS_INTERFACE (decl->klass)) {
4441 g_assert (decl->slot != -1);
4442 vtable [decl->slot] = overrides [i*2 + 1];
4443 overrides [i * 2 + 1]->slot = decl->slot;
4445 override_map = g_hash_table_new (mono_aligned_addr_hash, NULL);
4446 TRACE_INTERFACE_VTABLE (printf ("adding explicit override from %s [%p] to %s [%p]\n",
4447 mono_method_full_name (decl, 1), decl,
4448 mono_method_full_name (overrides [i * 2 + 1], 1), overrides [i * 2 + 1]));
4449 g_hash_table_insert (override_map, decl, overrides [i * 2 + 1]);
4451 if (mono_security_core_clr_enabled ())
4452 mono_security_core_clr_check_override (klass, vtable [decl->slot], decl);
4457 * If a method occupies more than one place in the vtable, and it is
4458 * overriden, then change the other occurances too.
4463 for (i = 0; i < max_vtsize; ++i)
4465 TRACE_INTERFACE_VTABLE (printf ("checking slot %d method %s[%p] for overrides\n", i, mono_method_full_name (vtable [i], 1), vtable [i]));
4467 cm = (MonoMethod *)g_hash_table_lookup (override_map, vtable [i]);
4472 g_hash_table_destroy (override_map);
4473 override_map = NULL;
4476 g_slist_free (virt_methods);
4477 virt_methods = NULL;
4479 g_assert (cur_slot <= max_vtsize);
4481 /* Ensure that all vtable slots are filled with concrete instance methods */
4482 if (!mono_class_is_abstract (klass)) {
4483 for (i = 0; i < cur_slot; ++i) {
4484 if (vtable [i] == NULL || (vtable [i]->flags & (METHOD_ATTRIBUTE_ABSTRACT | METHOD_ATTRIBUTE_STATIC))) {
4485 char *type_name = mono_type_get_full_name (klass);
4486 char *method_name = vtable [i] ? mono_method_full_name (vtable [i], TRUE) : g_strdup ("none");
4487 mono_class_set_type_load_failure (klass, "Type %s has invalid vtable method slot %d with method %s", type_name, i, method_name);
4489 g_free (method_name);
4496 if (mono_class_is_ginst (klass)) {
4497 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
4499 mono_class_init (gklass);
4501 klass->vtable_size = MAX (gklass->vtable_size, cur_slot);
4503 /* Check that the vtable_size value computed in mono_class_init () is correct */
4504 if (klass->vtable_size)
4505 g_assert (cur_slot == klass->vtable_size);
4506 klass->vtable_size = cur_slot;
4509 /* Try to share the vtable with our parent. */
4510 if (klass->parent && (klass->parent->vtable_size == klass->vtable_size) && (memcmp (klass->parent->vtable, vtable, sizeof (gpointer) * klass->vtable_size) == 0)) {
4511 mono_memory_barrier ();
4512 klass->vtable = klass->parent->vtable;
4514 MonoMethod **tmp = (MonoMethod **)mono_class_alloc0 (klass, sizeof (gpointer) * klass->vtable_size);
4515 memcpy (tmp, vtable, sizeof (gpointer) * klass->vtable_size);
4516 mono_memory_barrier ();
4517 klass->vtable = tmp;
4520 DEBUG_INTERFACE_VTABLE (print_vtable_full (klass, klass->vtable, klass->vtable_size, first_non_interface_slot, "FINALLY", FALSE));
4521 if (mono_print_vtable) {
4524 print_implemented_interfaces (klass);
4526 for (i = 0; i <= max_iid; i++)
4527 if (MONO_CLASS_IMPLEMENTS_INTERFACE (klass, i))
4530 printf ("VTable %s (vtable entries = %d, interfaces = %d)\n", mono_type_full_name (&klass->byval_arg),
4531 klass->vtable_size, icount);
4533 for (i = 0; i < cur_slot; ++i) {
4538 printf (" slot assigned: %03d, slot index: %03d %s\n", i, cm->slot,
4539 mono_method_full_name (cm, TRUE));
4545 printf ("Interfaces %s.%s (max_iid = %d)\n", klass->name_space,
4546 klass->name, max_iid);
4548 for (i = 0; i < klass->interface_count; i++) {
4549 ic = klass->interfaces [i];
4550 printf (" slot offset: %03d, method count: %03d, iid: %03d %s\n",
4551 mono_class_interface_offset (klass, ic),
4552 count_virtual_methods (ic), ic->interface_id, mono_type_full_name (&ic->byval_arg));
4555 for (k = klass->parent; k ; k = k->parent) {
4556 for (i = 0; i < k->interface_count; i++) {
4557 ic = k->interfaces [i];
4558 printf (" parent slot offset: %03d, method count: %03d, iid: %03d %s\n",
4559 mono_class_interface_offset (klass, ic),
4560 count_virtual_methods (ic), ic->interface_id, mono_type_full_name (&ic->byval_arg));
4568 VERIFY_INTERFACE_VTABLE (mono_class_verify_vtable (klass));
4573 char *name = mono_type_get_full_name (klass);
4574 mono_class_set_type_load_failure (klass, "VTable setup of type %s failed", name);
4578 g_hash_table_destroy (override_map);
4580 g_slist_free (virt_methods);
4585 * mono_method_get_vtable_slot:
4587 * Returns method->slot, computing it if neccesary. Return -1 on failure.
4588 * LOCKING: Acquires the loader lock.
4590 * FIXME Use proper MonoError machinery here.
4593 mono_method_get_vtable_slot (MonoMethod *method)
4595 if (method->slot == -1) {
4596 mono_class_setup_vtable (method->klass);
4597 if (mono_class_has_failure (method->klass))
4599 if (method->slot == -1) {
4603 if (!mono_class_is_ginst (method->klass)) {
4604 g_assert (method->is_inflated);
4605 return mono_method_get_vtable_slot (((MonoMethodInflated*)method)->declaring);
4608 /* This can happen for abstract methods of generic instances due to the shortcut code in mono_class_setup_vtable_general (). */
4609 g_assert (mono_class_is_ginst (method->klass));
4610 gklass = mono_class_get_generic_class (method->klass)->container_class;
4611 mono_class_setup_methods (method->klass);
4612 g_assert (method->klass->methods);
4613 mcount = mono_class_get_method_count (method->klass);
4614 for (i = 0; i < mcount; ++i) {
4615 if (method->klass->methods [i] == method)
4618 g_assert (i < mcount);
4619 g_assert (gklass->methods);
4620 method->slot = gklass->methods [i]->slot;
4622 g_assert (method->slot != -1);
4624 return method->slot;
4628 * mono_method_get_vtable_index:
4631 * Returns the index into the runtime vtable to access the method or,
4632 * in the case of a virtual generic method, the virtual generic method
4633 * thunk. Returns -1 on failure.
4635 * FIXME Use proper MonoError machinery here.
4638 mono_method_get_vtable_index (MonoMethod *method)
4640 if (method->is_inflated && (method->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
4641 MonoMethodInflated *imethod = (MonoMethodInflated*)method;
4642 if (imethod->declaring->is_generic)
4643 return mono_method_get_vtable_slot (imethod->declaring);
4645 return mono_method_get_vtable_slot (method);
4648 static MonoMethod *default_ghc = NULL;
4649 static MonoMethod *default_finalize = NULL;
4650 static int finalize_slot = -1;
4651 static int ghc_slot = -1;
4654 initialize_object_slots (MonoClass *klass)
4659 if (klass == mono_defaults.object_class) {
4660 mono_class_setup_vtable (klass);
4661 for (i = 0; i < klass->vtable_size; ++i) {
4662 MonoMethod *cm = klass->vtable [i];
4664 if (!strcmp (cm->name, "GetHashCode"))
4666 else if (!strcmp (cm->name, "Finalize"))
4670 g_assert (ghc_slot > 0);
4671 default_ghc = klass->vtable [ghc_slot];
4673 g_assert (finalize_slot > 0);
4674 default_finalize = klass->vtable [finalize_slot];
4679 MonoMethod *array_method;
4681 } GenericArrayMethodInfo;
4683 static int generic_array_method_num = 0;
4684 static GenericArrayMethodInfo *generic_array_method_info = NULL;
4687 generic_array_methods (MonoClass *klass)
4689 int i, count_generic = 0, mcount;
4690 GList *list = NULL, *tmp;
4691 if (generic_array_method_num)
4692 return generic_array_method_num;
4693 mono_class_setup_methods (klass->parent); /*This is setting up System.Array*/
4694 g_assert (!mono_class_has_failure (klass->parent)); /*So hitting this assert is a huge problem*/
4695 mcount = mono_class_get_method_count (klass->parent);
4696 for (i = 0; i < mcount; i++) {
4697 MonoMethod *m = klass->parent->methods [i];
4698 if (!strncmp (m->name, "InternalArray__", 15)) {
4700 list = g_list_prepend (list, m);
4703 list = g_list_reverse (list);
4704 generic_array_method_info = (GenericArrayMethodInfo *)mono_image_alloc (mono_defaults.corlib, sizeof (GenericArrayMethodInfo) * count_generic);
4706 for (tmp = list; tmp; tmp = tmp->next) {
4707 const char *mname, *iname;
4709 MonoMethod *m = (MonoMethod *)tmp->data;
4710 const char *ireadonlylist_prefix = "InternalArray__IReadOnlyList_";
4711 const char *ireadonlycollection_prefix = "InternalArray__IReadOnlyCollection_";
4713 generic_array_method_info [i].array_method = m;
4714 if (!strncmp (m->name, "InternalArray__ICollection_", 27)) {
4715 iname = "System.Collections.Generic.ICollection`1.";
4716 mname = m->name + 27;
4717 } else if (!strncmp (m->name, "InternalArray__IEnumerable_", 27)) {
4718 iname = "System.Collections.Generic.IEnumerable`1.";
4719 mname = m->name + 27;
4720 } else if (!strncmp (m->name, ireadonlylist_prefix, strlen (ireadonlylist_prefix))) {
4721 iname = "System.Collections.Generic.IReadOnlyList`1.";
4722 mname = m->name + strlen (ireadonlylist_prefix);
4723 } else if (!strncmp (m->name, ireadonlycollection_prefix, strlen (ireadonlycollection_prefix))) {
4724 iname = "System.Collections.Generic.IReadOnlyCollection`1.";
4725 mname = m->name + strlen (ireadonlycollection_prefix);
4726 } else if (!strncmp (m->name, "InternalArray__", 15)) {
4727 iname = "System.Collections.Generic.IList`1.";
4728 mname = m->name + 15;
4730 g_assert_not_reached ();
4733 name = (gchar *)mono_image_alloc (mono_defaults.corlib, strlen (iname) + strlen (mname) + 1);
4734 strcpy (name, iname);
4735 strcpy (name + strlen (iname), mname);
4736 generic_array_method_info [i].name = name;
4739 /*g_print ("array generic methods: %d\n", count_generic);*/
4741 generic_array_method_num = count_generic;
4743 return generic_array_method_num;
4747 setup_generic_array_ifaces (MonoClass *klass, MonoClass *iface, MonoMethod **methods, int pos, GHashTable *cache)
4749 MonoGenericContext tmp_context;
4752 tmp_context.class_inst = NULL;
4753 tmp_context.method_inst = mono_class_get_generic_class (iface)->context.class_inst;
4754 //g_print ("setting up array interface: %s\n", mono_type_get_name_full (&iface->byval_arg, 0));
4756 for (i = 0; i < generic_array_method_num; i++) {
4758 MonoMethod *m = generic_array_method_info [i].array_method;
4759 MonoMethod *inflated, *helper;
4761 inflated = mono_class_inflate_generic_method_checked (m, &tmp_context, &error);
4762 mono_error_assert_ok (&error);
4763 helper = g_hash_table_lookup (cache, inflated);
4765 helper = mono_marshal_get_generic_array_helper (klass, generic_array_method_info [i].name, inflated);
4766 g_hash_table_insert (cache, inflated, helper);
4768 methods [pos ++] = helper;
4773 concat_two_strings_with_zero (MonoImage *image, const char *s1, const char *s2)
4775 int null_length = strlen ("(null)");
4776 int len = (s1 ? strlen (s1) : null_length) + (s2 ? strlen (s2) : null_length) + 2;
4777 char *s = (char *)mono_image_alloc (image, len);
4780 result = g_snprintf (s, len, "%s%c%s", s1 ? s1 : "(null)", '\0', s2 ? s2 : "(null)");
4781 g_assert (result == len - 1);
4788 * @klass: the class to initialize
4790 * Compute the instance_size, class_size and other infos that cannot be
4791 * computed at mono_class_get() time. Also compute vtable_size if possible.
4792 * Returns TRUE on success or FALSE if there was a problem in loading
4793 * the type (incorrect assemblies, missing assemblies, methods, etc).
4794 * Initializes the following fields in @klass:
4795 * - all the fields initialized by mono_class_init_sizes ()
4800 * LOCKING: Acquires the loader lock.
4803 mono_class_init (MonoClass *klass)
4805 int i, vtable_size = 0, array_method_count = 0;
4806 MonoCachedClassInfo cached_info;
4807 gboolean has_cached_info;
4808 gboolean locked = FALSE;
4809 gboolean ghcimpl = FALSE;
4810 gboolean has_cctor = FALSE;
4811 int first_iface_slot = 0;
4815 /* Double-checking locking pattern */
4816 if (klass->inited || mono_class_has_failure (klass))
4817 return !mono_class_has_failure (klass);
4819 /*g_print ("Init class %s\n", mono_type_get_full_name (klass));*/
4822 * This function can recursively call itself.
4824 GSList *init_list = (GSList *)mono_native_tls_get_value (init_pending_tls_id);
4825 if (g_slist_find (init_list, klass)) {
4826 mono_class_set_type_load_failure (klass, "Recursive type definition detected");
4829 init_list = g_slist_prepend (init_list, klass);
4830 mono_native_tls_set_value (init_pending_tls_id, init_list);
4833 * We want to avoid doing complicated work inside locks, so we compute all the required
4834 * information and write it to @klass inside a lock.
4837 if (mono_verifier_is_enabled_for_class (klass) && !mono_verifier_verify_class (klass)) {
4838 mono_class_set_type_load_failure (klass, "%s", concat_two_strings_with_zero (klass->image, klass->name, klass->image->assembly_name));
4842 if (klass->byval_arg.type == MONO_TYPE_ARRAY || klass->byval_arg.type == MONO_TYPE_SZARRAY) {
4843 MonoClass *element_class = klass->element_class;
4844 if (!element_class->inited)
4845 mono_class_init (element_class);
4846 if (mono_class_set_type_load_failure_causedby_class (klass, element_class, "Could not load array element class"))
4850 mono_stats.initialized_class_count++;
4852 if (mono_class_is_ginst (klass) && !mono_class_get_generic_class (klass)->is_dynamic) {
4853 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
4855 mono_class_init (gklass);
4856 if (mono_class_set_type_load_failure_causedby_class (klass, gklass, "Generic Type Definition failed to init"))
4859 mono_class_setup_interface_id (klass);
4862 if (klass->parent && !klass->parent->inited)
4863 mono_class_init (klass->parent);
4865 has_cached_info = mono_class_get_cached_class_info (klass, &cached_info);
4867 /* Compute instance size etc. */
4868 init_sizes_with_info (klass, has_cached_info ? &cached_info : NULL);
4869 if (mono_class_has_failure (klass))
4872 mono_class_setup_supertypes (klass);
4875 initialize_object_slots (klass);
4878 * Initialize the rest of the data without creating a generic vtable if possible.
4879 * If possible, also compute vtable_size, so mono_class_create_runtime_vtable () can
4880 * also avoid computing a generic vtable.
4882 if (has_cached_info) {
4884 vtable_size = cached_info.vtable_size;
4885 ghcimpl = cached_info.ghcimpl;
4886 has_cctor = cached_info.has_cctor;
4887 } else if (klass->rank == 1 && klass->byval_arg.type == MONO_TYPE_SZARRAY) {
4888 /* SZARRAY can have 2 vtable layouts, with and without the stelemref method.
4889 * The first slot if for array with.
4891 static int szarray_vtable_size[2] = { 0 };
4893 int slot = MONO_TYPE_IS_REFERENCE (&klass->element_class->byval_arg) ? 0 : 1;
4896 if (!szarray_vtable_size [slot]) {
4897 mono_class_setup_vtable (klass);
4898 szarray_vtable_size [slot] = klass->vtable_size;
4899 vtable_size = klass->vtable_size;
4901 vtable_size = szarray_vtable_size[slot];
4903 } else if (mono_class_is_ginst (klass) && !MONO_CLASS_IS_INTERFACE (klass)) {
4904 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
4906 /* Generic instance case */
4907 ghcimpl = gklass->ghcimpl;
4908 has_cctor = gklass->has_cctor;
4910 mono_class_setup_vtable (gklass);
4911 if (mono_class_set_type_load_failure_causedby_class (klass, gklass, "Generic type definition failed to init"))
4914 vtable_size = gklass->vtable_size;
4918 /* ghcimpl is not currently used
4920 if (klass->parent) {
4921 MonoMethod *cmethod = klass->vtable [ghc_slot];
4922 if (cmethod->is_inflated)
4923 cmethod = ((MonoMethodInflated*)cmethod)->declaring;
4924 if (cmethod == default_ghc) {
4930 /* C# doesn't allow interfaces to have cctors */
4931 if (!MONO_CLASS_IS_INTERFACE (klass) || klass->image != mono_defaults.corlib) {
4932 MonoMethod *cmethod = NULL;
4934 if (mono_class_is_ginst (klass)) {
4935 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
4937 /* Generic instance case */
4938 ghcimpl = gklass->ghcimpl;
4939 has_cctor = gklass->has_cctor;
4940 } else if (klass->type_token && !image_is_dynamic(klass->image)) {
4941 cmethod = find_method_in_metadata (klass, ".cctor", 0, METHOD_ATTRIBUTE_SPECIAL_NAME);
4942 /* The find_method function ignores the 'flags' argument */
4943 if (cmethod && (cmethod->flags & METHOD_ATTRIBUTE_SPECIAL_NAME))
4946 mono_class_setup_methods (klass);
4947 if (mono_class_has_failure (klass))
4950 int mcount = mono_class_get_method_count (klass);
4951 for (i = 0; i < mcount; ++i) {
4952 MonoMethod *method = klass->methods [i];
4953 if ((method->flags & METHOD_ATTRIBUTE_SPECIAL_NAME) &&
4954 (strcmp (".cctor", method->name) == 0)) {
4964 array_method_count = 3 + (klass->rank > 1? 2: 1);
4966 if (klass->interface_count) {
4967 int count_generic = generic_array_methods (klass);
4968 array_method_count += klass->interface_count * count_generic;
4972 if (klass->parent) {
4973 if (!klass->parent->vtable_size)
4974 mono_class_setup_vtable (klass->parent);
4975 if (mono_class_set_type_load_failure_causedby_class (klass, klass->parent, "Parent class vtable failed to initialize"))
4977 g_assert (klass->parent->vtable_size);
4978 first_iface_slot = klass->parent->vtable_size;
4979 if (mono_class_need_stelemref_method (klass))
4984 * Do the actual changes to @klass inside the loader lock
4986 mono_loader_lock ();
4989 if (klass->inited || mono_class_has_failure (klass)) {
4990 mono_loader_unlock ();
4991 /* Somebody might have gotten in before us */
4992 return !mono_class_has_failure (klass);
4995 mono_stats.initialized_class_count++;
4997 if (mono_class_is_ginst (klass) && !mono_class_get_generic_class (klass)->is_dynamic)
4998 mono_stats.generic_class_count++;
5000 if (mono_class_is_ginst (klass) || image_is_dynamic (klass->image) || !klass->type_token || (has_cached_info && !cached_info.has_nested_classes))
5001 klass->nested_classes_inited = TRUE;
5002 klass->ghcimpl = ghcimpl;
5003 klass->has_cctor = has_cctor;
5005 klass->vtable_size = vtable_size;
5006 if (has_cached_info) {
5007 klass->has_finalize = cached_info.has_finalize;
5008 klass->has_finalize_inited = TRUE;
5011 mono_class_set_method_count (klass, array_method_count);
5013 mono_loader_unlock ();
5016 setup_interface_offsets (klass, first_iface_slot, TRUE);
5018 if (mono_security_core_clr_enabled ())
5019 mono_security_core_clr_check_inheritance (klass);
5021 if (mono_class_is_ginst (klass) && !mono_verifier_class_is_valid_generic_instantiation (klass))
5022 mono_class_set_type_load_failure (klass, "Invalid generic instantiation");
5027 init_list = g_slist_remove (init_list, klass);
5028 mono_native_tls_set_value (init_pending_tls_id, init_list);
5031 mono_loader_unlock ();
5033 /* Leave this for last */
5034 mono_loader_lock ();
5036 mono_loader_unlock ();
5038 return !mono_class_has_failure (klass);
5042 * mono_class_has_finalizer:
5044 * Return whenever KLASS has a finalizer, initializing klass->has_finalizer in the
5048 mono_class_has_finalizer (MonoClass *klass)
5050 gboolean has_finalize = FALSE;
5052 if (klass->has_finalize_inited)
5053 return klass->has_finalize;
5055 /* Interfaces and valuetypes are not supposed to have finalizers */
5056 if (!(MONO_CLASS_IS_INTERFACE (klass) || klass->valuetype)) {
5057 MonoMethod *cmethod = NULL;
5059 if (klass->rank == 1 && klass->byval_arg.type == MONO_TYPE_SZARRAY) {
5060 } else if (mono_class_is_ginst (klass)) {
5061 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
5063 has_finalize = mono_class_has_finalizer (gklass);
5064 } else if (klass->parent && klass->parent->has_finalize) {
5065 has_finalize = TRUE;
5067 if (klass->parent) {
5069 * Can't search in metadata for a method named Finalize, because that
5070 * ignores overrides.
5072 mono_class_setup_vtable (klass);
5073 if (mono_class_has_failure (klass))
5076 cmethod = klass->vtable [finalize_slot];
5080 g_assert (klass->vtable_size > finalize_slot);
5082 if (klass->parent) {
5083 if (cmethod->is_inflated)
5084 cmethod = ((MonoMethodInflated*)cmethod)->declaring;
5085 if (cmethod != default_finalize)
5086 has_finalize = TRUE;
5092 mono_loader_lock ();
5093 if (!klass->has_finalize_inited) {
5094 klass->has_finalize = has_finalize ? 1 : 0;
5096 mono_memory_barrier ();
5097 klass->has_finalize_inited = TRUE;
5099 mono_loader_unlock ();
5101 return klass->has_finalize;
5105 mono_is_corlib_image (MonoImage *image)
5107 return image == mono_defaults.corlib;
5111 * LOCKING: this assumes the loader lock is held
5114 mono_class_setup_mono_type (MonoClass *klass)
5116 const char *name = klass->name;
5117 const char *nspace = klass->name_space;
5118 gboolean is_corlib = mono_is_corlib_image (klass->image);
5120 klass->this_arg.byref = 1;
5121 klass->this_arg.data.klass = klass;
5122 klass->this_arg.type = MONO_TYPE_CLASS;
5123 klass->byval_arg.data.klass = klass;
5124 klass->byval_arg.type = MONO_TYPE_CLASS;
5126 if (is_corlib && !strcmp (nspace, "System")) {
5127 if (!strcmp (name, "ValueType")) {
5129 * do not set the valuetype bit for System.ValueType.
5130 * klass->valuetype = 1;
5132 klass->blittable = TRUE;
5133 } else if (!strcmp (name, "Enum")) {
5135 * do not set the valuetype bit for System.Enum.
5136 * klass->valuetype = 1;
5138 klass->valuetype = 0;
5139 klass->enumtype = 0;
5140 } else if (!strcmp (name, "Object")) {
5141 klass->byval_arg.type = MONO_TYPE_OBJECT;
5142 klass->this_arg.type = MONO_TYPE_OBJECT;
5143 } else if (!strcmp (name, "String")) {
5144 klass->byval_arg.type = MONO_TYPE_STRING;
5145 klass->this_arg.type = MONO_TYPE_STRING;
5146 } else if (!strcmp (name, "TypedReference")) {
5147 klass->byval_arg.type = MONO_TYPE_TYPEDBYREF;
5148 klass->this_arg.type = MONO_TYPE_TYPEDBYREF;
5152 if (klass->valuetype) {
5153 int t = MONO_TYPE_VALUETYPE;
5155 if (is_corlib && !strcmp (nspace, "System")) {
5158 if (!strcmp (name, "Boolean")) {
5159 t = MONO_TYPE_BOOLEAN;
5160 } else if (!strcmp(name, "Byte")) {
5162 klass->blittable = TRUE;
5166 if (!strcmp (name, "Char")) {
5171 if (!strcmp (name, "Double")) {
5173 klass->blittable = TRUE;
5177 if (!strcmp (name, "Int32")) {
5179 klass->blittable = TRUE;
5180 } else if (!strcmp(name, "Int16")) {
5182 klass->blittable = TRUE;
5183 } else if (!strcmp(name, "Int64")) {
5185 klass->blittable = TRUE;
5186 } else if (!strcmp(name, "IntPtr")) {
5188 klass->blittable = TRUE;
5192 if (!strcmp (name, "Single")) {
5194 klass->blittable = TRUE;
5195 } else if (!strcmp(name, "SByte")) {
5197 klass->blittable = TRUE;
5201 if (!strcmp (name, "UInt32")) {
5203 klass->blittable = TRUE;
5204 } else if (!strcmp(name, "UInt16")) {
5206 klass->blittable = TRUE;
5207 } else if (!strcmp(name, "UInt64")) {
5209 klass->blittable = TRUE;
5210 } else if (!strcmp(name, "UIntPtr")) {
5212 klass->blittable = TRUE;
5216 if (!strcmp (name, "TypedReference")) {
5217 t = MONO_TYPE_TYPEDBYREF;
5218 klass->blittable = TRUE;
5222 if (!strcmp (name, "Void")) {
5230 klass->byval_arg.type = (MonoTypeEnum)t;
5231 klass->this_arg.type = (MonoTypeEnum)t;
5234 if (MONO_CLASS_IS_INTERFACE (klass)) {
5235 klass->interface_id = mono_get_unique_iid (klass);
5237 if (is_corlib && !strcmp (nspace, "System.Collections.Generic")) {
5238 //FIXME IEnumerator needs to be special because GetEnumerator uses magic under the hood
5239 /* FIXME: System.Array/InternalEnumerator don't need all this interface fabrication machinery.
5240 * MS returns diferrent types based on which instance is called. For example:
5241 * object obj = new byte[10][];
5242 * Type a = ((IEnumerable<byte[]>)obj).GetEnumerator ().GetType ();
5243 * Type b = ((IEnumerable<IList<byte>>)obj).GetEnumerator ().GetType ();
5246 if (!strcmp (name, "IList`1") || !strcmp (name, "ICollection`1") || !strcmp (name, "IEnumerable`1") || !strcmp (name, "IEnumerator`1"))
5247 klass->is_array_special_interface = 1;
5254 * COM initialization is delayed until needed.
5255 * However when a [ComImport] attribute is present on a type it will trigger
5256 * the initialization. This is not a problem unless the BCL being executed
5257 * lacks the types that COM depends on (e.g. Variant on Silverlight).
5260 init_com_from_comimport (MonoClass *klass)
5262 /* we don't always allow COM initialization under the CoreCLR (e.g. Moonlight does not require it) */
5263 if (mono_security_core_clr_enabled ()) {
5264 /* but some other CoreCLR user could requires it for their platform (i.e. trusted) code */
5265 if (!mono_security_core_clr_determine_platform_image (klass->image)) {
5266 /* but it can not be made available for application (i.e. user code) since all COM calls
5267 * are considered native calls. In this case we fail with a TypeLoadException (just like
5268 * Silverlight 2 does */
5269 mono_class_set_type_load_failure (klass, "");
5274 /* FIXME : we should add an extra checks to ensure COM can be initialized properly before continuing */
5276 #endif /*DISABLE_COM*/
5279 * LOCKING: this assumes the loader lock is held
5282 mono_class_setup_parent (MonoClass *klass, MonoClass *parent)
5284 gboolean system_namespace;
5285 gboolean is_corlib = mono_is_corlib_image (klass->image);
5287 system_namespace = !strcmp (klass->name_space, "System") && is_corlib;
5289 /* if root of the hierarchy */
5290 if (system_namespace && !strcmp (klass->name, "Object")) {
5291 klass->parent = NULL;
5292 klass->instance_size = sizeof (MonoObject);
5295 if (!strcmp (klass->name, "<Module>")) {
5296 klass->parent = NULL;
5297 klass->instance_size = 0;
5301 if (!MONO_CLASS_IS_INTERFACE (klass)) {
5302 /* Imported COM Objects always derive from __ComObject. */
5304 if (MONO_CLASS_IS_IMPORT (klass)) {
5305 init_com_from_comimport (klass);
5306 if (parent == mono_defaults.object_class)
5307 parent = mono_class_get_com_object_class ();
5311 /* set the parent to something useful and safe, but mark the type as broken */
5312 parent = mono_defaults.object_class;
5313 mono_class_set_type_load_failure (klass, "");
5317 klass->parent = parent;
5319 if (mono_class_is_ginst (parent) && !parent->name) {
5321 * If the parent is a generic instance, we may get
5322 * called before it is fully initialized, especially
5323 * before it has its name.
5328 #ifndef DISABLE_REMOTING
5329 klass->marshalbyref = parent->marshalbyref;
5330 klass->contextbound = parent->contextbound;
5333 klass->delegate = parent->delegate;
5335 if (MONO_CLASS_IS_IMPORT (klass) || mono_class_is_com_object (parent))
5336 mono_class_set_is_com_object (klass);
5338 if (system_namespace) {
5339 #ifndef DISABLE_REMOTING
5340 if (klass->name [0] == 'M' && !strcmp (klass->name, "MarshalByRefObject"))
5341 klass->marshalbyref = 1;
5343 if (klass->name [0] == 'C' && !strcmp (klass->name, "ContextBoundObject"))
5344 klass->contextbound = 1;
5346 if (klass->name [0] == 'D' && !strcmp (klass->name, "Delegate"))
5347 klass->delegate = 1;
5350 if (klass->parent->enumtype || (mono_is_corlib_image (klass->parent->image) && (strcmp (klass->parent->name, "ValueType") == 0) &&
5351 (strcmp (klass->parent->name_space, "System") == 0)))
5352 klass->valuetype = 1;
5353 if (mono_is_corlib_image (klass->parent->image) && ((strcmp (klass->parent->name, "Enum") == 0) && (strcmp (klass->parent->name_space, "System") == 0))) {
5354 klass->valuetype = klass->enumtype = 1;
5356 /*klass->enumtype = klass->parent->enumtype; */
5358 /* initialize com types if COM interfaces are present */
5360 if (MONO_CLASS_IS_IMPORT (klass))
5361 init_com_from_comimport (klass);
5363 klass->parent = NULL;
5369 * mono_class_setup_supertypes:
5372 * Build the data structure needed to make fast type checks work.
5373 * This currently sets two fields in @class:
5374 * - idepth: distance between @class and System.Object in the type
5376 * - supertypes: array of classes: each element has a class in the hierarchy
5377 * starting from @class up to System.Object
5379 * LOCKING: Acquires the loader lock.
5382 mono_class_setup_supertypes (MonoClass *klass)
5385 MonoClass **supertypes;
5387 mono_atomic_load_acquire (supertypes, MonoClass **, &klass->supertypes);
5391 if (klass->parent && !klass->parent->supertypes)
5392 mono_class_setup_supertypes (klass->parent);
5394 idepth = klass->parent->idepth + 1;
5398 ms = MAX (MONO_DEFAULT_SUPERTABLE_SIZE, idepth);
5399 supertypes = (MonoClass **)mono_class_alloc0 (klass, sizeof (MonoClass *) * ms);
5401 if (klass->parent) {
5402 CHECKED_METADATA_WRITE_PTR ( supertypes [idepth - 1] , klass );
5405 for (supertype_idx = 0; supertype_idx < klass->parent->idepth; supertype_idx++)
5406 CHECKED_METADATA_WRITE_PTR ( supertypes [supertype_idx] , klass->parent->supertypes [supertype_idx] );
5408 CHECKED_METADATA_WRITE_PTR ( supertypes [0] , klass );
5411 mono_memory_barrier ();
5413 mono_loader_lock ();
5414 klass->idepth = idepth;
5415 /* Needed so idepth is visible before supertypes is set */
5416 mono_memory_barrier ();
5417 klass->supertypes = supertypes;
5418 mono_loader_unlock ();
5422 fix_gclass_incomplete_instantiation (MonoClass *gclass, void *user_data)
5424 MonoClass *gtd = (MonoClass*)user_data;
5425 /* Only try to fix generic instances of @gtd */
5426 if (mono_class_get_generic_class (gclass)->container_class != gtd)
5429 /* Check if the generic instance has no parent. */
5430 if (gtd->parent && !gclass->parent)
5431 mono_generic_class_setup_parent (gclass, gtd);
5437 mono_class_set_failure_and_error (MonoClass *klass, MonoError *error, const char *msg)
5439 mono_class_set_type_load_failure (klass, "%s", msg);
5440 mono_error_set_type_load_class (error, klass, "%s", msg);
5444 * mono_class_create_from_typedef:
5445 * @image: image where the token is valid
5446 * @type_token: typedef token
5447 * @error: used to return any error found while creating the type
5449 * Create the MonoClass* representing the specified type token.
5450 * @type_token must be a TypeDef token.
5452 * FIXME: don't return NULL on failure, just the the caller figure it out.
5455 mono_class_create_from_typedef (MonoImage *image, guint32 type_token, MonoError *error)
5457 MonoTableInfo *tt = &image->tables [MONO_TABLE_TYPEDEF];
5458 MonoClass *klass, *parent = NULL;
5459 guint32 cols [MONO_TYPEDEF_SIZE];
5460 guint32 cols_next [MONO_TYPEDEF_SIZE];
5461 guint tidx = mono_metadata_token_index (type_token);
5462 MonoGenericContext *context = NULL;
5463 const char *name, *nspace;
5465 MonoClass **interfaces;
5466 guint32 field_last, method_last;
5467 guint32 nesting_tokeen;
5469 mono_error_init (error);
5471 if (mono_metadata_token_table (type_token) != MONO_TABLE_TYPEDEF || tidx > tt->rows) {
5472 mono_error_set_bad_image (error, image, "Invalid typedef token %x", type_token);
5476 mono_loader_lock ();
5478 if ((klass = (MonoClass *)mono_internal_hash_table_lookup (&image->class_cache, GUINT_TO_POINTER (type_token)))) {
5479 mono_loader_unlock ();
5483 mono_metadata_decode_row (tt, tidx - 1, cols, MONO_TYPEDEF_SIZE);
5485 name = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
5486 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
5488 if (mono_metadata_has_generic_params (image, type_token)) {
5489 klass = mono_image_alloc0 (image, sizeof (MonoClassGtd));
5490 klass->class_kind = MONO_CLASS_GTD;
5491 classes_size += sizeof (MonoClassGtd);
5494 klass = mono_image_alloc0 (image, sizeof (MonoClassDef));
5495 klass->class_kind = MONO_CLASS_DEF;
5496 classes_size += sizeof (MonoClassDef);
5501 klass->name_space = nspace;
5503 mono_profiler_class_event (klass, MONO_PROFILE_START_LOAD);
5505 klass->image = image;
5506 klass->type_token = type_token;
5507 mono_class_set_flags (klass, cols [MONO_TYPEDEF_FLAGS]);
5509 mono_internal_hash_table_insert (&image->class_cache, GUINT_TO_POINTER (type_token), klass);
5512 * Check whether we're a generic type definition.
5514 if (mono_class_is_gtd (klass)) {
5515 MonoGenericContainer *generic_container = mono_metadata_load_generic_params (image, klass->type_token, NULL);
5516 generic_container->owner.klass = klass;
5517 generic_container->is_anonymous = FALSE; // Owner class is now known, container is no longer anonymous
5518 context = &generic_container->context;
5519 mono_class_set_generic_container (klass, generic_container);
5520 enable_gclass_recording ();
5523 if (cols [MONO_TYPEDEF_EXTENDS]) {
5525 guint32 parent_token = mono_metadata_token_from_dor (cols [MONO_TYPEDEF_EXTENDS]);
5527 if (mono_metadata_token_table (parent_token) == MONO_TABLE_TYPESPEC) {
5528 /*WARNING: this must satisfy mono_metadata_type_hash*/
5529 klass->this_arg.byref = 1;
5530 klass->this_arg.data.klass = klass;
5531 klass->this_arg.type = MONO_TYPE_CLASS;
5532 klass->byval_arg.data.klass = klass;
5533 klass->byval_arg.type = MONO_TYPE_CLASS;
5535 parent = mono_class_get_checked (image, parent_token, error);
5536 if (parent && context) /* Always inflate */
5537 parent = mono_class_inflate_generic_class_checked (parent, context, error);
5539 if (parent == NULL) {
5540 mono_class_set_type_load_failure (klass, "%s", mono_error_get_message (error));
5541 goto parent_failure;
5544 for (tmp = parent; tmp; tmp = tmp->parent) {
5546 mono_class_set_failure_and_error (klass, error, "Cycle found while resolving parent");
5547 goto parent_failure;
5549 if (mono_class_is_gtd (klass) && mono_class_is_ginst (tmp) && mono_class_get_generic_class (tmp)->container_class == klass) {
5550 mono_class_set_failure_and_error (klass, error, "Parent extends generic instance of this type");
5551 goto parent_failure;
5556 mono_class_setup_parent (klass, parent);
5558 /* uses ->valuetype, which is initialized by mono_class_setup_parent above */
5559 mono_class_setup_mono_type (klass);
5561 if (mono_class_is_gtd (klass))
5562 disable_gclass_recording (fix_gclass_incomplete_instantiation, klass);
5565 * This might access klass->byval_arg for recursion generated by generic constraints,
5566 * so it has to come after setup_mono_type ().
5568 if ((nesting_tokeen = mono_metadata_nested_in_typedef (image, type_token))) {
5569 klass->nested_in = mono_class_create_from_typedef (image, nesting_tokeen, error);
5570 if (!mono_error_ok (error)) {
5571 /*FIXME implement a mono_class_set_failure_from_mono_error */
5572 mono_class_set_type_load_failure (klass, "%s", mono_error_get_message (error));
5573 mono_loader_unlock ();
5574 mono_profiler_class_loaded (klass, MONO_PROFILE_FAILED);
5579 if ((mono_class_get_flags (klass) & TYPE_ATTRIBUTE_STRING_FORMAT_MASK) == TYPE_ATTRIBUTE_UNICODE_CLASS)
5583 if ((mono_class_get_flags (klass) & TYPE_ATTRIBUTE_STRING_FORMAT_MASK) == TYPE_ATTRIBUTE_AUTO_CLASS)
5587 klass->cast_class = klass->element_class = klass;
5588 if (mono_is_corlib_image (klass->image)) {
5589 switch (klass->byval_arg.type) {
5591 if (mono_defaults.byte_class)
5592 klass->cast_class = mono_defaults.byte_class;
5595 if (mono_defaults.sbyte_class)
5596 mono_defaults.sbyte_class = klass;
5599 if (mono_defaults.uint16_class)
5600 mono_defaults.uint16_class = klass;
5603 if (mono_defaults.int16_class)
5604 klass->cast_class = mono_defaults.int16_class;
5607 if (mono_defaults.uint32_class)
5608 mono_defaults.uint32_class = klass;
5611 if (mono_defaults.int32_class)
5612 klass->cast_class = mono_defaults.int32_class;
5615 if (mono_defaults.uint64_class)
5616 mono_defaults.uint64_class = klass;
5619 if (mono_defaults.int64_class)
5620 klass->cast_class = mono_defaults.int64_class;
5625 if (!klass->enumtype) {
5626 if (!mono_metadata_interfaces_from_typedef_full (
5627 image, type_token, &interfaces, &icount, FALSE, context, error)){
5629 mono_class_set_type_load_failure (klass, "%s", mono_error_get_message (error));
5630 mono_loader_unlock ();
5631 mono_profiler_class_loaded (klass, MONO_PROFILE_FAILED);
5635 /* This is required now that it is possible for more than 2^16 interfaces to exist. */
5636 g_assert(icount <= 65535);
5638 klass->interfaces = interfaces;
5639 klass->interface_count = icount;
5640 klass->interfaces_inited = 1;
5643 /*g_print ("Load class %s\n", name);*/
5646 * Compute the field and method lists
5648 int first_field_idx = cols [MONO_TYPEDEF_FIELD_LIST] - 1;
5649 mono_class_set_first_field_idx (klass, first_field_idx);
5650 int first_method_idx = cols [MONO_TYPEDEF_METHOD_LIST] - 1;
5651 mono_class_set_first_method_idx (klass, first_method_idx);
5653 if (tt->rows > tidx){
5654 mono_metadata_decode_row (tt, tidx, cols_next, MONO_TYPEDEF_SIZE);
5655 field_last = cols_next [MONO_TYPEDEF_FIELD_LIST] - 1;
5656 method_last = cols_next [MONO_TYPEDEF_METHOD_LIST] - 1;
5658 field_last = image->tables [MONO_TABLE_FIELD].rows;
5659 method_last = image->tables [MONO_TABLE_METHOD].rows;
5662 if (cols [MONO_TYPEDEF_FIELD_LIST] &&
5663 cols [MONO_TYPEDEF_FIELD_LIST] <= image->tables [MONO_TABLE_FIELD].rows)
5664 mono_class_set_field_count (klass, field_last - first_field_idx);
5665 if (cols [MONO_TYPEDEF_METHOD_LIST] <= image->tables [MONO_TABLE_METHOD].rows)
5666 mono_class_set_method_count (klass, method_last - first_method_idx);
5668 /* reserve space to store vector pointer in arrays */
5669 if (mono_is_corlib_image (image) && !strcmp (nspace, "System") && !strcmp (name, "Array")) {
5670 klass->instance_size += 2 * sizeof (gpointer);
5671 g_assert (mono_class_get_field_count (klass) == 0);
5674 if (klass->enumtype) {
5675 MonoType *enum_basetype = mono_class_find_enum_basetype (klass, error);
5676 if (!enum_basetype) {
5677 /*set it to a default value as the whole runtime can't handle this to be null*/
5678 klass->cast_class = klass->element_class = mono_defaults.int32_class;
5679 mono_class_set_type_load_failure (klass, "%s", mono_error_get_message (error));
5680 mono_loader_unlock ();
5681 mono_profiler_class_loaded (klass, MONO_PROFILE_FAILED);
5684 klass->cast_class = klass->element_class = mono_class_from_mono_type (enum_basetype);
5688 * If we're a generic type definition, load the constraints.
5689 * We must do this after the class has been constructed to make certain recursive scenarios
5692 if (mono_class_is_gtd (klass) && !mono_metadata_load_generic_param_constraints_checked (image, type_token, mono_class_get_generic_container (klass), error)) {
5693 mono_class_set_type_load_failure (klass, "Could not load generic parameter constrains due to %s", mono_error_get_message (error));
5694 mono_loader_unlock ();
5695 mono_profiler_class_loaded (klass, MONO_PROFILE_FAILED);
5699 if (klass->image->assembly_name && !strcmp (klass->image->assembly_name, "Mono.Simd") && !strcmp (nspace, "Mono.Simd")) {
5700 if (!strncmp (name, "Vector", 6))
5701 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");
5702 } else if (klass->image->assembly_name && !strcmp (klass->image->assembly_name, "System.Numerics") && !strcmp (nspace, "System.Numerics")) {
5703 if (!strcmp (name, "Vector2") || !strcmp (name, "Vector3") || !strcmp (name, "Vector4"))
5704 klass->simd_type = 1;
5707 mono_loader_unlock ();
5709 mono_profiler_class_loaded (klass, MONO_PROFILE_OK);
5714 mono_class_setup_mono_type (klass);
5715 mono_loader_unlock ();
5716 mono_profiler_class_loaded (klass, MONO_PROFILE_FAILED);
5720 /** Is klass a Nullable<T> ginst? */
5722 mono_class_is_nullable (MonoClass *klass)
5724 MonoGenericClass *gklass = mono_class_try_get_generic_class (klass);
5725 return gklass && gklass->container_class == mono_defaults.generic_nullable_class;
5729 /** if klass is T? return T */
5731 mono_class_get_nullable_param (MonoClass *klass)
5733 g_assert (mono_class_is_nullable (klass));
5734 return mono_class_from_mono_type (mono_class_get_generic_class (klass)->context.class_inst->type_argv [0]);
5738 mono_generic_class_setup_parent (MonoClass *klass, MonoClass *gtd)
5742 MonoGenericClass *gclass = mono_class_get_generic_class (klass);
5744 klass->parent = mono_class_inflate_generic_class_checked (gtd->parent, mono_generic_class_get_context (gclass), &error);
5745 if (!mono_error_ok (&error)) {
5746 /*Set parent to something safe as the runtime doesn't handle well this kind of failure.*/
5747 klass->parent = mono_defaults.object_class;
5748 mono_class_set_type_load_failure (klass, "Parent is a generic type instantiation that failed due to: %s", mono_error_get_message (&error));
5749 mono_error_cleanup (&error);
5752 mono_loader_lock ();
5754 mono_class_setup_parent (klass, klass->parent);
5756 if (klass->enumtype) {
5757 klass->cast_class = gtd->cast_class;
5758 klass->element_class = gtd->element_class;
5760 mono_loader_unlock ();
5764 mono_type_is_primitive (MonoType *type)
5766 return (type->type >= MONO_TYPE_BOOLEAN && type->type <= MONO_TYPE_R8) ||
5767 type-> type == MONO_TYPE_I || type->type == MONO_TYPE_U;
5771 * Create the `MonoClass' for an instantiation of a generic type.
5772 * We only do this if we actually need it.
5775 mono_generic_class_get_class (MonoGenericClass *gclass)
5777 MonoClass *klass, *gklass;
5779 if (gclass->cached_class)
5780 return gclass->cached_class;
5782 klass = (MonoClass *)mono_image_set_alloc0 (gclass->owner, sizeof (MonoClassGenericInst));
5784 gklass = gclass->container_class;
5786 if (gklass->nested_in) {
5787 /* The nested_in type should not be inflated since it's possible to produce a nested type with less generic arguments*/
5788 klass->nested_in = gklass->nested_in;
5791 klass->name = gklass->name;
5792 klass->name_space = gklass->name_space;
5794 klass->image = gklass->image;
5795 klass->type_token = gklass->type_token;
5797 klass->class_kind = MONO_CLASS_GINST;
5799 ((MonoClassGenericInst*)klass)->generic_class = gclass;
5801 klass->byval_arg.type = MONO_TYPE_GENERICINST;
5802 klass->this_arg.type = klass->byval_arg.type;
5803 klass->this_arg.data.generic_class = klass->byval_arg.data.generic_class = gclass;
5804 klass->this_arg.byref = TRUE;
5805 klass->enumtype = gklass->enumtype;
5806 klass->valuetype = gklass->valuetype;
5809 if (gklass->image->assembly_name && !strcmp (gklass->image->assembly_name, "System.Numerics.Vectors") && !strcmp (gklass->name_space, "System.Numerics") && !strcmp (gklass->name, "Vector`1")) {
5810 g_assert (gclass->context.class_inst);
5811 g_assert (gclass->context.class_inst->type_argc > 0);
5812 if (mono_type_is_primitive (gclass->context.class_inst->type_argv [0]))
5813 klass->simd_type = 1;
5815 klass->is_array_special_interface = gklass->is_array_special_interface;
5817 klass->cast_class = klass->element_class = klass;
5819 if (gclass->is_dynamic) {
5821 * 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.
5822 * This is to avoid work that would probably give wrong results as fields change as we build the TypeBuilder.
5823 * See remove_instantiations_of_and_ensure_contents in reflection.c and its usage in reflection.c to understand the fixup stage of SRE banking.
5825 if (!gklass->wastypebuilder)
5828 if (klass->enumtype) {
5830 * For enums, gklass->fields might not been set, but instance_size etc. is
5831 * already set in mono_reflection_create_internal_class (). For non-enums,
5832 * these will be computed normally in mono_class_layout_fields ().
5834 klass->instance_size = gklass->instance_size;
5835 klass->sizes.class_size = gklass->sizes.class_size;
5836 klass->size_inited = 1;
5840 mono_loader_lock ();
5842 if (gclass->cached_class) {
5843 mono_loader_unlock ();
5844 return gclass->cached_class;
5847 if (record_gclass_instantiation > 0)
5848 gclass_recorded_list = g_slist_append (gclass_recorded_list, klass);
5850 if (mono_class_is_nullable (klass))
5851 klass->cast_class = klass->element_class = mono_class_get_nullable_param (klass);
5853 mono_profiler_class_event (klass, MONO_PROFILE_START_LOAD);
5855 mono_generic_class_setup_parent (klass, gklass);
5857 if (gclass->is_dynamic)
5858 mono_class_setup_supertypes (klass);
5860 mono_memory_barrier ();
5861 gclass->cached_class = klass;
5863 mono_profiler_class_loaded (klass, MONO_PROFILE_OK);
5865 ++class_ginst_count;
5866 inflated_classes_size += sizeof (MonoClassGenericInst);
5868 mono_loader_unlock ();
5874 get_image_for_container (MonoGenericContainer *container)
5877 if (container->is_anonymous) {
5878 result = container->owner.image;
5881 if (container->is_method) {
5882 MonoMethod *method = container->owner.method;
5883 g_assert_checked (method);
5884 klass = method->klass;
5886 klass = container->owner.klass;
5888 g_assert_checked (klass);
5889 result = klass->image;
5896 get_image_for_generic_param (MonoGenericParam *param)
5898 MonoGenericContainer *container = mono_generic_param_owner (param);
5899 g_assert_checked (container);
5900 return get_image_for_container (container);
5903 // Make a string in the designated image consisting of a single integer.
5904 #define INT_STRING_SIZE 16
5906 make_generic_name_string (MonoImage *image, int num)
5908 char *name = (char *)mono_image_alloc0 (image, INT_STRING_SIZE);
5909 g_snprintf (name, INT_STRING_SIZE, "%d", num);
5913 // This is called by mono_class_from_generic_parameter_internal when a new class must be created.
5914 // pinfo is derived from param by the caller for us.
5916 make_generic_param_class (MonoGenericParam *param, MonoGenericParamInfo *pinfo)
5918 MonoClass *klass, **ptr;
5920 MonoGenericContainer *container = mono_generic_param_owner (param);
5921 g_assert_checked (container);
5923 MonoImage *image = get_image_for_container (container);
5924 gboolean is_mvar = container->is_method;
5925 gboolean is_anonymous = container->is_anonymous;
5927 klass = (MonoClass *)mono_image_alloc0 (image, sizeof (MonoClassGenericParam));
5928 klass->class_kind = MONO_CLASS_GPARAM;
5929 classes_size += sizeof (MonoClassGenericParam);
5930 ++class_gparam_count;
5933 CHECKED_METADATA_WRITE_PTR_EXEMPT ( klass->name , pinfo->name );
5935 int n = mono_generic_param_num (param);
5936 CHECKED_METADATA_WRITE_PTR_LOCAL ( klass->name , make_generic_name_string (image, n) );
5940 CHECKED_METADATA_WRITE_PTR_EXEMPT ( klass->name_space , "" );
5941 } else if (is_mvar) {
5942 MonoMethod *omethod = container->owner.method;
5943 CHECKED_METADATA_WRITE_PTR_EXEMPT ( klass->name_space , (omethod && omethod->klass) ? omethod->klass->name_space : "" );
5945 MonoClass *oklass = container->owner.klass;
5946 CHECKED_METADATA_WRITE_PTR_EXEMPT ( klass->name_space , oklass ? oklass->name_space : "" );
5949 mono_profiler_class_event (klass, MONO_PROFILE_START_LOAD);
5951 // Count non-NULL items in pinfo->constraints
5954 for (ptr = pinfo->constraints; ptr && *ptr; ptr++, count++)
5958 if ((count > 0) && !MONO_CLASS_IS_INTERFACE (pinfo->constraints [0])) {
5959 CHECKED_METADATA_WRITE_PTR ( klass->parent , pinfo->constraints [0] );
5961 } else if (pinfo && pinfo->flags & GENERIC_PARAMETER_ATTRIBUTE_VALUE_TYPE_CONSTRAINT) {
5962 CHECKED_METADATA_WRITE_PTR ( klass->parent , mono_class_load_from_name (mono_defaults.corlib, "System", "ValueType") );
5964 CHECKED_METADATA_WRITE_PTR ( klass->parent , mono_defaults.object_class );
5967 if (count - pos > 0) {
5968 klass->interface_count = count - pos;
5969 CHECKED_METADATA_WRITE_PTR_LOCAL ( klass->interfaces , (MonoClass **)mono_image_alloc0 (image, sizeof (MonoClass *) * (count - pos)) );
5970 klass->interfaces_inited = TRUE;
5971 for (i = pos; i < count; i++)
5972 CHECKED_METADATA_WRITE_PTR ( klass->interfaces [i - pos] , pinfo->constraints [i] );
5975 CHECKED_METADATA_WRITE_PTR_EXEMPT ( klass->image , image );
5977 klass->inited = TRUE;
5978 CHECKED_METADATA_WRITE_PTR_LOCAL ( klass->cast_class , klass );
5979 CHECKED_METADATA_WRITE_PTR_LOCAL ( klass->element_class , klass );
5981 klass->byval_arg.type = is_mvar ? MONO_TYPE_MVAR : MONO_TYPE_VAR;
5982 klass->this_arg.type = klass->byval_arg.type;
5983 CHECKED_METADATA_WRITE_PTR ( klass->this_arg.data.generic_param , param );
5984 CHECKED_METADATA_WRITE_PTR ( klass->byval_arg.data.generic_param , param );
5985 klass->this_arg.byref = TRUE;
5987 /* We don't use type_token for VAR since only classes can use it (not arrays, pointer, VARs, etc) */
5988 klass->sizes.generic_param_token = pinfo ? pinfo->token : 0;
5990 /*Init these fields to sane values*/
5991 klass->min_align = 1;
5993 * This makes sure the the value size of this class is equal to the size of the types the gparam is
5994 * constrained to, the JIT depends on this.
5996 klass->instance_size = sizeof (MonoObject) + mono_type_stack_size_internal (&klass->byval_arg, NULL, TRUE);
5997 mono_memory_barrier ();
5998 klass->size_inited = 1;
6000 mono_class_setup_supertypes (klass);
6002 if (count - pos > 0) {
6003 mono_class_setup_vtable (klass->parent);
6004 if (mono_class_has_failure (klass->parent))
6005 mono_class_set_type_load_failure (klass, "Failed to setup parent interfaces");
6007 setup_interface_offsets (klass, klass->parent->vtable_size, TRUE);
6013 #define FAST_CACHE_SIZE 16
6016 * get_anon_gparam_class and set_anon_gparam_class are helpers for mono_class_from_generic_parameter_internal.
6017 * The latter will sometimes create MonoClasses for anonymous generic params. To prevent this being wasteful,
6018 * we cache the MonoClasses.
6019 * FIXME: It would be better to instead cache anonymous MonoGenericParams, and allow anonymous params to point directly to classes using the pklass field.
6020 * LOCKING: Takes the image lock depending on @take_lock.
6023 get_anon_gparam_class (MonoGenericParam *param, gboolean take_lock)
6025 int n = mono_generic_param_num (param);
6026 MonoImage *image = get_image_for_generic_param (param);
6027 gboolean is_mvar = mono_generic_param_owner (param)->is_method;
6028 MonoClass *klass = NULL;
6033 // For params with a small num and no constraints, we use a "fast" cache which does simple num lookup in an array.
6034 // For high numbers or constraints we have to use pointer hashes.
6035 if (param->gshared_constraint) {
6036 ht = is_mvar ? image->mvar_cache_constrained : image->var_cache_constrained;
6039 mono_image_lock (image);
6040 klass = (MonoClass *)g_hash_table_lookup (ht, param);
6042 mono_image_unlock (image);
6047 if (n < FAST_CACHE_SIZE) {
6049 return image->mvar_cache_fast ? image->mvar_cache_fast [n] : NULL;
6051 return image->var_cache_fast ? image->var_cache_fast [n] : NULL;
6053 ht = is_mvar ? image->mvar_cache_slow : image->var_cache_slow;
6056 mono_image_lock (image);
6057 klass = (MonoClass *)g_hash_table_lookup (ht, GINT_TO_POINTER (n));
6059 mono_image_unlock (image);
6066 * LOCKING: Image lock (param->image) must be held
6069 set_anon_gparam_class (MonoGenericParam *param, MonoClass *klass)
6071 int n = mono_generic_param_num (param);
6072 MonoImage *image = get_image_for_generic_param (param);
6073 gboolean is_mvar = mono_generic_param_owner (param)->is_method;
6077 if (param->gshared_constraint) {
6078 GHashTable *ht = is_mvar ? image->mvar_cache_constrained : image->var_cache_constrained;
6080 ht = g_hash_table_new ((GHashFunc)mono_metadata_generic_param_hash, (GEqualFunc)mono_metadata_generic_param_equal);
6081 mono_memory_barrier ();
6083 image->mvar_cache_constrained = ht;
6085 image->var_cache_constrained = ht;
6087 g_hash_table_insert (ht, param, klass);
6088 } else if (n < FAST_CACHE_SIZE) {
6090 /* Requires locking to avoid droping an already published class */
6091 if (!image->mvar_cache_fast)
6092 image->mvar_cache_fast = (MonoClass **)mono_image_alloc0 (image, sizeof (MonoClass*) * FAST_CACHE_SIZE);
6093 image->mvar_cache_fast [n] = klass;
6095 if (!image->var_cache_fast)
6096 image->var_cache_fast = (MonoClass **)mono_image_alloc0 (image, sizeof (MonoClass*) * FAST_CACHE_SIZE);
6097 image->var_cache_fast [n] = klass;
6100 GHashTable *ht = is_mvar ? image->mvar_cache_slow : image->var_cache_slow;
6102 ht = is_mvar ? image->mvar_cache_slow : image->var_cache_slow;
6104 ht = g_hash_table_new (NULL, NULL);
6105 mono_memory_barrier ();
6107 image->mvar_cache_slow = ht;
6109 image->var_cache_slow = ht;
6112 g_hash_table_insert (ht, GINT_TO_POINTER (n), klass);
6117 * LOCKING: Acquires the image lock (@image).
6120 mono_class_from_generic_parameter_internal (MonoGenericParam *param)
6122 MonoImage *image = get_image_for_generic_param (param);
6123 MonoGenericParamInfo *pinfo = mono_generic_param_info (param);
6124 MonoClass *klass, *klass2;
6126 // If a klass already exists for this object and is cached, return it.
6127 if (pinfo) // Non-anonymous
6128 klass = pinfo->pklass;
6130 klass = get_anon_gparam_class (param, TRUE);
6135 // Create a new klass
6136 klass = make_generic_param_class (param, pinfo);
6138 // Now we need to cache the klass we created.
6139 // But since we wait to grab the lock until after creating the klass, we need to check to make sure
6140 // another thread did not get in and cache a klass ahead of us. In that case, return their klass
6141 // and allow our newly-created klass object to just leak.
6142 mono_memory_barrier ();
6144 mono_image_lock (image);
6146 // Here "klass2" refers to the klass potentially created by the other thread.
6147 if (pinfo) // Repeat check from above
6148 klass2 = pinfo->pklass;
6150 klass2 = get_anon_gparam_class (param, FALSE);
6157 pinfo->pklass = klass;
6159 set_anon_gparam_class (param, klass);
6161 mono_image_unlock (image);
6163 /* FIXME: Should this go inside 'make_generic_param_klass'? */
6165 mono_profiler_class_loaded (klass2, MONO_PROFILE_FAILED); // Alert profiler about botched class create
6167 mono_profiler_class_loaded (klass, MONO_PROFILE_OK);
6173 * mono_class_from_generic_parameter:
6174 * @param: Parameter to find/construct a class for.
6175 * @arg2: Is ignored.
6176 * @arg3: Is ignored.
6179 mono_class_from_generic_parameter (MonoGenericParam *param, MonoImage *arg2 G_GNUC_UNUSED, gboolean arg3 G_GNUC_UNUSED)
6181 return mono_class_from_generic_parameter_internal (param);
6185 mono_ptr_class_get (MonoType *type)
6188 MonoClass *el_class;
6192 el_class = mono_class_from_mono_type (type);
6193 image = el_class->image;
6195 mono_image_lock (image);
6196 if (image->ptr_cache) {
6197 if ((result = (MonoClass *)g_hash_table_lookup (image->ptr_cache, el_class))) {
6198 mono_image_unlock (image);
6202 mono_image_unlock (image);
6204 result = (MonoClass *)mono_image_alloc0 (image, sizeof (MonoClassPointer));
6206 classes_size += sizeof (MonoClassPointer);
6207 ++class_pointer_count;
6209 result->parent = NULL; /* no parent for PTR types */
6210 result->name_space = el_class->name_space;
6211 name = g_strdup_printf ("%s*", el_class->name);
6212 result->name = mono_image_strdup (image, name);
6213 result->class_kind = MONO_CLASS_POINTER;
6216 mono_profiler_class_event (result, MONO_PROFILE_START_LOAD);
6218 result->image = el_class->image;
6219 result->inited = TRUE;
6220 result->instance_size = sizeof (MonoObject) + sizeof (gpointer);
6221 result->cast_class = result->element_class = el_class;
6222 result->blittable = TRUE;
6224 result->byval_arg.type = MONO_TYPE_PTR;
6225 result->this_arg.type = result->byval_arg.type;
6226 result->this_arg.data.type = result->byval_arg.data.type = &result->element_class->byval_arg;
6227 result->this_arg.byref = TRUE;
6229 mono_class_setup_supertypes (result);
6231 mono_image_lock (image);
6232 if (image->ptr_cache) {
6234 if ((result2 = (MonoClass *)g_hash_table_lookup (image->ptr_cache, el_class))) {
6235 mono_image_unlock (image);
6236 mono_profiler_class_loaded (result, MONO_PROFILE_FAILED);
6240 image->ptr_cache = g_hash_table_new (mono_aligned_addr_hash, NULL);
6242 g_hash_table_insert (image->ptr_cache, el_class, result);
6243 mono_image_unlock (image);
6245 mono_profiler_class_loaded (result, MONO_PROFILE_OK);
6251 mono_fnptr_class_get (MonoMethodSignature *sig)
6253 MonoClass *result, *cached;
6254 static GHashTable *ptr_hash = NULL;
6256 /* FIXME: These should be allocate from a mempool as well, but which one ? */
6258 mono_loader_lock ();
6260 ptr_hash = g_hash_table_new (mono_aligned_addr_hash, NULL);
6261 cached = (MonoClass *)g_hash_table_lookup (ptr_hash, sig);
6262 mono_loader_unlock ();
6266 result = g_new0 (MonoClass, 1);
6268 result->parent = NULL; /* no parent for PTR types */
6269 result->name_space = "System";
6270 result->name = "MonoFNPtrFakeClass";
6271 result->class_kind = MONO_CLASS_POINTER;
6273 result->image = mono_defaults.corlib; /* need to fix... */
6274 result->instance_size = sizeof (MonoObject) + sizeof (gpointer);
6275 result->cast_class = result->element_class = result;
6276 result->byval_arg.type = MONO_TYPE_FNPTR;
6277 result->this_arg.type = result->byval_arg.type;
6278 result->this_arg.data.method = result->byval_arg.data.method = sig;
6279 result->this_arg.byref = TRUE;
6280 result->blittable = TRUE;
6281 result->inited = TRUE;
6283 mono_class_setup_supertypes (result);
6285 mono_loader_lock ();
6287 cached = (MonoClass *)g_hash_table_lookup (ptr_hash, sig);
6290 mono_loader_unlock ();
6294 mono_profiler_class_event (result, MONO_PROFILE_START_LOAD);
6296 classes_size += sizeof (MonoClassPointer);
6297 ++class_pointer_count;
6299 g_hash_table_insert (ptr_hash, sig, result);
6301 mono_loader_unlock ();
6303 mono_profiler_class_loaded (result, MONO_PROFILE_OK);
6309 * mono_class_from_mono_type:
6310 * @type: describes the type to return
6312 * This returns a MonoClass for the specified MonoType, the value is never NULL.
6315 mono_class_from_mono_type (MonoType *type)
6317 switch (type->type) {
6318 case MONO_TYPE_OBJECT:
6319 return type->data.klass? type->data.klass: mono_defaults.object_class;
6320 case MONO_TYPE_VOID:
6321 return type->data.klass? type->data.klass: mono_defaults.void_class;
6322 case MONO_TYPE_BOOLEAN:
6323 return type->data.klass? type->data.klass: mono_defaults.boolean_class;
6324 case MONO_TYPE_CHAR:
6325 return type->data.klass? type->data.klass: mono_defaults.char_class;
6327 return type->data.klass? type->data.klass: mono_defaults.sbyte_class;
6329 return type->data.klass? type->data.klass: mono_defaults.byte_class;
6331 return type->data.klass? type->data.klass: mono_defaults.int16_class;
6333 return type->data.klass? type->data.klass: mono_defaults.uint16_class;
6335 return type->data.klass? type->data.klass: mono_defaults.int32_class;
6337 return type->data.klass? type->data.klass: mono_defaults.uint32_class;
6339 return type->data.klass? type->data.klass: mono_defaults.int_class;
6341 return type->data.klass? type->data.klass: mono_defaults.uint_class;
6343 return type->data.klass? type->data.klass: mono_defaults.int64_class;
6345 return type->data.klass? type->data.klass: mono_defaults.uint64_class;
6347 return type->data.klass? type->data.klass: mono_defaults.single_class;
6349 return type->data.klass? type->data.klass: mono_defaults.double_class;
6350 case MONO_TYPE_STRING:
6351 return type->data.klass? type->data.klass: mono_defaults.string_class;
6352 case MONO_TYPE_TYPEDBYREF:
6353 return type->data.klass? type->data.klass: mono_defaults.typed_reference_class;
6354 case MONO_TYPE_ARRAY:
6355 return mono_bounded_array_class_get (type->data.array->eklass, type->data.array->rank, TRUE);
6357 return mono_ptr_class_get (type->data.type);
6358 case MONO_TYPE_FNPTR:
6359 return mono_fnptr_class_get (type->data.method);
6360 case MONO_TYPE_SZARRAY:
6361 return mono_array_class_get (type->data.klass, 1);
6362 case MONO_TYPE_CLASS:
6363 case MONO_TYPE_VALUETYPE:
6364 return type->data.klass;
6365 case MONO_TYPE_GENERICINST:
6366 return mono_generic_class_get_class (type->data.generic_class);
6367 case MONO_TYPE_MVAR:
6369 return mono_class_from_generic_parameter_internal (type->data.generic_param);
6371 g_warning ("mono_class_from_mono_type: implement me 0x%02x\n", type->type);
6372 g_assert_not_reached ();
6375 // Yes, this returns NULL, even if it is documented as not doing so, but there
6376 // is no way for the code to make it this far, due to the assert above.
6381 * mono_type_retrieve_from_typespec
6382 * @image: context where the image is created
6383 * @type_spec: typespec token
6384 * @context: the generic context used to evaluate generic instantiations in
6387 mono_type_retrieve_from_typespec (MonoImage *image, guint32 type_spec, MonoGenericContext *context, gboolean *did_inflate, MonoError *error)
6389 MonoType *t = mono_type_create_from_typespec_checked (image, type_spec, error);
6391 *did_inflate = FALSE;
6396 if (context && (context->class_inst || context->method_inst)) {
6397 MonoType *inflated = inflate_generic_type (NULL, t, context, error);
6399 if (!mono_error_ok (error)) {
6405 *did_inflate = TRUE;
6412 * mono_class_create_from_typespec
6413 * @image: context where the image is created
6414 * @type_spec: typespec token
6415 * @context: the generic context used to evaluate generic instantiations in
6418 mono_class_create_from_typespec (MonoImage *image, guint32 type_spec, MonoGenericContext *context, MonoError *error)
6421 gboolean inflated = FALSE;
6422 MonoType *t = mono_type_retrieve_from_typespec (image, type_spec, context, &inflated, error);
6423 return_val_if_nok (error, NULL);
6424 ret = mono_class_from_mono_type (t);
6426 mono_metadata_free_type (t);
6431 * mono_bounded_array_class_get:
6432 * @element_class: element class
6433 * @rank: the dimension of the array class
6434 * @bounded: whenever the array has non-zero bounds
6436 * Returns: A class object describing the array with element type @element_type and
6440 mono_bounded_array_class_get (MonoClass *eclass, guint32 rank, gboolean bounded)
6443 MonoClass *klass, *cached, *k;
6444 MonoClass *parent = NULL;
6445 GSList *list, *rootlist = NULL;
6449 g_assert (rank <= 255);
6452 /* bounded only matters for one-dimensional arrays */
6455 image = eclass->image;
6459 if (rank == 1 && !bounded) {
6461 * This case is very frequent not just during compilation because of calls
6462 * from mono_class_from_mono_type (), mono_array_new (),
6463 * Array:CreateInstance (), etc, so use a separate cache + a separate lock.
6465 mono_os_mutex_lock (&image->szarray_cache_lock);
6466 if (!image->szarray_cache)
6467 image->szarray_cache = g_hash_table_new (mono_aligned_addr_hash, NULL);
6468 cached = (MonoClass *)g_hash_table_lookup (image->szarray_cache, eclass);
6469 mono_os_mutex_unlock (&image->szarray_cache_lock);
6471 mono_loader_lock ();
6472 if (!image->array_cache)
6473 image->array_cache = g_hash_table_new (mono_aligned_addr_hash, NULL);
6474 rootlist = (GSList *)g_hash_table_lookup (image->array_cache, eclass);
6475 for (list = rootlist; list; list = list->next) {
6476 k = (MonoClass *)list->data;
6477 if ((k->rank == rank) && (k->byval_arg.type == (((rank > 1) || bounded) ? MONO_TYPE_ARRAY : MONO_TYPE_SZARRAY))) {
6482 mono_loader_unlock ();
6487 parent = mono_defaults.array_class;
6488 if (!parent->inited)
6489 mono_class_init (parent);
6491 klass = (MonoClass *)mono_image_alloc0 (image, sizeof (MonoClassArray));
6493 klass->image = image;
6494 klass->name_space = eclass->name_space;
6495 klass->class_kind = MONO_CLASS_ARRAY;
6497 nsize = strlen (eclass->name);
6498 name = (char *)g_malloc (nsize + 2 + rank + 1);
6499 memcpy (name, eclass->name, nsize);
6502 memset (name + nsize + 1, ',', rank - 1);
6504 name [nsize + rank] = '*';
6505 name [nsize + rank + bounded] = ']';
6506 name [nsize + rank + bounded + 1] = 0;
6507 klass->name = mono_image_strdup (image, name);
6510 klass->type_token = 0;
6511 klass->parent = parent;
6512 klass->instance_size = mono_class_instance_size (klass->parent);
6514 if (eclass->byval_arg.type == MONO_TYPE_TYPEDBYREF || eclass->byval_arg.type == MONO_TYPE_VOID) {
6515 /*Arrays of those two types are invalid.*/
6516 MonoError prepared_error;
6517 mono_error_init (&prepared_error);
6518 mono_error_set_invalid_program (&prepared_error, "Arrays of void or System.TypedReference types are invalid.");
6519 mono_class_set_failure (klass, mono_error_box (&prepared_error, klass->image));
6520 mono_error_cleanup (&prepared_error);
6521 } else if (eclass->enumtype && !mono_class_enum_basetype (eclass)) {
6522 guint32 ref_info_handle = mono_class_get_ref_info_handle (eclass);
6523 if (!ref_info_handle || eclass->wastypebuilder) {
6524 g_warning ("Only incomplete TypeBuilder objects are allowed to be an enum without base_type");
6525 g_assert (ref_info_handle && !eclass->wastypebuilder);
6527 /* element_size -1 is ok as this is not an instantitable type*/
6528 klass->sizes.element_size = -1;
6530 klass->sizes.element_size = mono_class_array_element_size (eclass);
6532 mono_class_setup_supertypes (klass);
6534 if (mono_class_is_ginst (eclass))
6535 mono_class_init (eclass);
6536 if (!eclass->size_inited)
6537 mono_class_setup_fields (eclass);
6538 mono_class_set_type_load_failure_causedby_class (klass, eclass, "Could not load array element type");
6539 /*FIXME we fail the array type, but we have to let other fields be set.*/
6541 klass->has_references = MONO_TYPE_IS_REFERENCE (&eclass->byval_arg) || eclass->has_references? TRUE: FALSE;
6545 if (eclass->enumtype)
6546 klass->cast_class = eclass->element_class;
6548 klass->cast_class = eclass;
6550 switch (klass->cast_class->byval_arg.type) {
6552 klass->cast_class = mono_defaults.byte_class;
6555 klass->cast_class = mono_defaults.int16_class;
6558 #if SIZEOF_VOID_P == 4
6562 klass->cast_class = mono_defaults.int32_class;
6565 #if SIZEOF_VOID_P == 8
6569 klass->cast_class = mono_defaults.int64_class;
6575 klass->element_class = eclass;
6577 if ((rank > 1) || bounded) {
6578 MonoArrayType *at = (MonoArrayType *)mono_image_alloc0 (image, sizeof (MonoArrayType));
6579 klass->byval_arg.type = MONO_TYPE_ARRAY;
6580 klass->byval_arg.data.array = at;
6581 at->eklass = eclass;
6583 /* FIXME: complete.... */
6585 klass->byval_arg.type = MONO_TYPE_SZARRAY;
6586 klass->byval_arg.data.klass = eclass;
6588 klass->this_arg = klass->byval_arg;
6589 klass->this_arg.byref = 1;
6591 mono_loader_lock ();
6593 /* Check cache again */
6595 if (rank == 1 && !bounded) {
6596 mono_os_mutex_lock (&image->szarray_cache_lock);
6597 cached = (MonoClass *)g_hash_table_lookup (image->szarray_cache, eclass);
6598 mono_os_mutex_unlock (&image->szarray_cache_lock);
6600 rootlist = (GSList *)g_hash_table_lookup (image->array_cache, eclass);
6601 for (list = rootlist; list; list = list->next) {
6602 k = (MonoClass *)list->data;
6603 if ((k->rank == rank) && (k->byval_arg.type == (((rank > 1) || bounded) ? MONO_TYPE_ARRAY : MONO_TYPE_SZARRAY))) {
6610 mono_loader_unlock ();
6614 mono_profiler_class_event (klass, MONO_PROFILE_START_LOAD);
6616 classes_size += sizeof (MonoClassArray);
6617 ++class_array_count;
6619 if (rank == 1 && !bounded) {
6620 mono_os_mutex_lock (&image->szarray_cache_lock);
6621 g_hash_table_insert (image->szarray_cache, eclass, klass);
6622 mono_os_mutex_unlock (&image->szarray_cache_lock);
6624 list = g_slist_append (rootlist, klass);
6625 g_hash_table_insert (image->array_cache, eclass, list);
6628 mono_loader_unlock ();
6630 mono_profiler_class_loaded (klass, MONO_PROFILE_OK);
6636 * mono_array_class_get:
6637 * @element_class: element class
6638 * @rank: the dimension of the array class
6640 * Returns: A class object describing the array with element type @element_type and
6644 mono_array_class_get (MonoClass *eclass, guint32 rank)
6646 return mono_bounded_array_class_get (eclass, rank, FALSE);
6650 * mono_class_instance_size:
6653 * Use to get the size of a class in bytes.
6655 * Returns: The size of an object instance
6658 mono_class_instance_size (MonoClass *klass)
6660 if (!klass->size_inited)
6661 mono_class_init (klass);
6663 return klass->instance_size;
6667 * mono_class_min_align:
6670 * Use to get the computed minimum alignment requirements for the specified class.
6672 * Returns: minimum alignment requirements
6675 mono_class_min_align (MonoClass *klass)
6677 if (!klass->size_inited)
6678 mono_class_init (klass);
6680 return klass->min_align;
6684 * mono_class_value_size:
6687 * This function is used for value types, and return the
6688 * space and the alignment to store that kind of value object.
6690 * Returns: the size of a value of kind @klass
6693 mono_class_value_size (MonoClass *klass, guint32 *align)
6697 /* fixme: check disable, because we still have external revereces to
6698 * mscorlib and Dummy Objects
6700 /*g_assert (klass->valuetype);*/
6702 size = mono_class_instance_size (klass) - sizeof (MonoObject);
6705 *align = klass->min_align;
6711 * mono_class_data_size:
6714 * Returns: The size of the static class data
6717 mono_class_data_size (MonoClass *klass)
6720 mono_class_init (klass);
6721 /* This can happen with dynamically created types */
6722 if (!klass->fields_inited)
6723 mono_class_setup_fields (klass);
6725 /* in arrays, sizes.class_size is unioned with element_size
6726 * and arrays have no static fields
6730 return klass->sizes.class_size;
6734 * Auxiliary routine to mono_class_get_field
6736 * Takes a field index instead of a field token.
6738 static MonoClassField *
6739 mono_class_get_field_idx (MonoClass *klass, int idx)
6741 mono_class_setup_fields (klass);
6742 if (mono_class_has_failure (klass))
6746 int first_field_idx = mono_class_get_first_field_idx (klass);
6747 int fcount = mono_class_get_field_count (klass);
6748 if (klass->image->uncompressed_metadata) {
6750 * first_field_idx points to the FieldPtr table, while idx points into the
6751 * Field table, so we have to do a search.
6753 /*FIXME this is broken for types with multiple fields with the same name.*/
6754 const char *name = mono_metadata_string_heap (klass->image, mono_metadata_decode_row_col (&klass->image->tables [MONO_TABLE_FIELD], idx, MONO_FIELD_NAME));
6757 for (i = 0; i < fcount; ++i)
6758 if (mono_field_get_name (&klass->fields [i]) == name)
6759 return &klass->fields [i];
6760 g_assert_not_reached ();
6763 if ((idx >= first_field_idx) && (idx < first_field_idx + fcount)){
6764 return &klass->fields [idx - first_field_idx];
6768 klass = klass->parent;
6774 * mono_class_get_field:
6775 * @class: the class to lookup the field.
6776 * @field_token: the field token
6778 * Returns: A MonoClassField representing the type and offset of
6779 * the field, or a NULL value if the field does not belong to this
6783 mono_class_get_field (MonoClass *klass, guint32 field_token)
6785 int idx = mono_metadata_token_index (field_token);
6787 g_assert (mono_metadata_token_code (field_token) == MONO_TOKEN_FIELD_DEF);
6789 return mono_class_get_field_idx (klass, idx - 1);
6793 * mono_class_get_field_from_name:
6794 * @klass: the class to lookup the field.
6795 * @name: the field name
6797 * Search the class @klass and it's parents for a field with the name @name.
6799 * Returns: The MonoClassField pointer of the named field or NULL
6802 mono_class_get_field_from_name (MonoClass *klass, const char *name)
6804 return mono_class_get_field_from_name_full (klass, name, NULL);
6808 * mono_class_get_field_from_name_full:
6809 * @klass: the class to lookup the field.
6810 * @name: the field name
6811 * @type: the type of the fields. This optional.
6813 * Search the class @klass and it's parents for a field with the name @name and type @type.
6815 * If @klass is an inflated generic type, the type comparison is done with the equivalent field
6816 * of its generic type definition.
6818 * Returns: The MonoClassField pointer of the named field or NULL
6821 mono_class_get_field_from_name_full (MonoClass *klass, const char *name, MonoType *type)
6825 mono_class_setup_fields (klass);
6826 if (mono_class_has_failure (klass))
6830 int fcount = mono_class_get_field_count (klass);
6831 for (i = 0; i < fcount; ++i) {
6832 MonoClassField *field = &klass->fields [i];
6834 if (strcmp (name, mono_field_get_name (field)) != 0)
6838 MonoType *field_type = mono_metadata_get_corresponding_field_from_generic_type_definition (field)->type;
6839 if (!mono_metadata_type_equal_full (type, field_type, TRUE))
6844 klass = klass->parent;
6850 * mono_class_get_field_token:
6851 * @field: the field we need the token of
6853 * Get the token of a field. Note that the tokesn is only valid for the image
6854 * the field was loaded from. Don't use this function for fields in dynamic types.
6856 * Returns: The token representing the field in the image it was loaded from.
6859 mono_class_get_field_token (MonoClassField *field)
6861 MonoClass *klass = field->parent;
6864 mono_class_setup_fields (klass);
6869 int first_field_idx = mono_class_get_first_field_idx (klass);
6870 int fcount = mono_class_get_field_count (klass);
6871 for (i = 0; i < fcount; ++i) {
6872 if (&klass->fields [i] == field) {
6873 int idx = first_field_idx + i + 1;
6875 if (klass->image->uncompressed_metadata)
6876 idx = mono_metadata_translate_token_index (klass->image, MONO_TABLE_FIELD, idx);
6877 return mono_metadata_make_token (MONO_TABLE_FIELD, idx);
6880 klass = klass->parent;
6883 g_assert_not_reached ();
6888 mono_field_get_index (MonoClassField *field)
6890 int index = field - field->parent->fields;
6891 g_assert (index >= 0 && index < mono_class_get_field_count (field->parent));
6897 * mono_class_get_field_default_value:
6899 * Return the default value of the field as a pointer into the metadata blob.
6902 mono_class_get_field_default_value (MonoClassField *field, MonoTypeEnum *def_type)
6905 guint32 constant_cols [MONO_CONSTANT_SIZE];
6907 MonoClass *klass = field->parent;
6908 MonoFieldDefaultValue *def_values;
6910 g_assert (field->type->attrs & FIELD_ATTRIBUTE_HAS_DEFAULT);
6912 def_values = mono_class_get_field_def_values (klass);
6914 def_values = (MonoFieldDefaultValue *)mono_class_alloc0 (klass, sizeof (MonoFieldDefaultValue) * mono_class_get_field_count (klass));
6916 mono_class_set_field_def_values (klass, def_values);
6919 field_index = mono_field_get_index (field);
6921 if (!def_values [field_index].data) {
6922 cindex = mono_metadata_get_constant_index (field->parent->image, mono_class_get_field_token (field), 0);
6926 g_assert (!(field->type->attrs & FIELD_ATTRIBUTE_HAS_FIELD_RVA));
6928 mono_metadata_decode_row (&field->parent->image->tables [MONO_TABLE_CONSTANT], cindex - 1, constant_cols, MONO_CONSTANT_SIZE);
6929 def_values [field_index].def_type = (MonoTypeEnum)constant_cols [MONO_CONSTANT_TYPE];
6930 mono_memory_barrier ();
6931 def_values [field_index].data = (const char *)mono_metadata_blob_heap (field->parent->image, constant_cols [MONO_CONSTANT_VALUE]);
6934 *def_type = def_values [field_index].def_type;
6935 return def_values [field_index].data;
6939 mono_property_get_index (MonoProperty *prop)
6941 MonoClassPropertyInfo *info = mono_class_get_property_info (prop->parent);
6942 int index = prop - info->properties;
6944 g_assert (index >= 0 && index < info->count);
6950 * mono_class_get_property_default_value:
6952 * Return the default value of the field as a pointer into the metadata blob.
6955 mono_class_get_property_default_value (MonoProperty *property, MonoTypeEnum *def_type)
6958 guint32 constant_cols [MONO_CONSTANT_SIZE];
6959 MonoClass *klass = property->parent;
6961 g_assert (property->attrs & PROPERTY_ATTRIBUTE_HAS_DEFAULT);
6963 * We don't cache here because it is not used by C# so it's quite rare, but
6964 * we still do the lookup in klass->ext because that is where the data
6965 * is stored for dynamic assemblies.
6968 if (image_is_dynamic (klass->image)) {
6969 MonoClassPropertyInfo *info = mono_class_get_property_info (klass);
6970 int prop_index = mono_property_get_index (property);
6971 if (info->def_values && info->def_values [prop_index].data) {
6972 *def_type = info->def_values [prop_index].def_type;
6973 return info->def_values [prop_index].data;
6977 cindex = mono_metadata_get_constant_index (klass->image, mono_class_get_property_token (property), 0);
6981 mono_metadata_decode_row (&klass->image->tables [MONO_TABLE_CONSTANT], cindex - 1, constant_cols, MONO_CONSTANT_SIZE);
6982 *def_type = (MonoTypeEnum)constant_cols [MONO_CONSTANT_TYPE];
6983 return (const char *)mono_metadata_blob_heap (klass->image, constant_cols [MONO_CONSTANT_VALUE]);
6987 mono_class_get_event_token (MonoEvent *event)
6989 MonoClass *klass = event->parent;
6993 MonoClassEventInfo *info = mono_class_get_event_info (klass);
6995 for (i = 0; i < info->count; ++i) {
6996 if (&info->events [i] == event)
6997 return mono_metadata_make_token (MONO_TABLE_EVENT, info->first + i + 1);
7000 klass = klass->parent;
7003 g_assert_not_reached ();
7008 * mono_class_get_property_from_name:
7010 * @name: name of the property to lookup in the specified class
7012 * Use this method to lookup a property in a class
7013 * Returns: the MonoProperty with the given name, or NULL if the property
7014 * does not exist on the @klass.
7017 mono_class_get_property_from_name (MonoClass *klass, const char *name)
7021 gpointer iter = NULL;
7022 while ((p = mono_class_get_properties (klass, &iter))) {
7023 if (! strcmp (name, p->name))
7026 klass = klass->parent;
7032 * mono_class_get_property_token:
7033 * @prop: MonoProperty to query
7035 * Returns: The ECMA token for the specified property.
7038 mono_class_get_property_token (MonoProperty *prop)
7040 MonoClass *klass = prop->parent;
7044 gpointer iter = NULL;
7045 MonoClassPropertyInfo *info = mono_class_get_property_info (klass);
7046 while ((p = mono_class_get_properties (klass, &iter))) {
7047 if (&info->properties [i] == prop)
7048 return mono_metadata_make_token (MONO_TABLE_PROPERTY, info->first + i + 1);
7052 klass = klass->parent;
7055 g_assert_not_reached ();
7060 mono_class_name_from_token (MonoImage *image, guint32 type_token)
7062 const char *name, *nspace;
7063 if (image_is_dynamic (image))
7064 return g_strdup_printf ("DynamicType 0x%08x", type_token);
7066 switch (type_token & 0xff000000){
7067 case MONO_TOKEN_TYPE_DEF: {
7068 guint32 cols [MONO_TYPEDEF_SIZE];
7069 MonoTableInfo *tt = &image->tables [MONO_TABLE_TYPEDEF];
7070 guint tidx = mono_metadata_token_index (type_token);
7072 if (tidx > tt->rows)
7073 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
7075 mono_metadata_decode_row (tt, tidx - 1, cols, MONO_TYPEDEF_SIZE);
7076 name = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
7077 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
7078 if (strlen (nspace) == 0)
7079 return g_strdup_printf ("%s", name);
7081 return g_strdup_printf ("%s.%s", nspace, name);
7084 case MONO_TOKEN_TYPE_REF: {
7086 guint32 cols [MONO_TYPEREF_SIZE];
7087 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEREF];
7088 guint tidx = mono_metadata_token_index (type_token);
7091 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
7093 if (!mono_verifier_verify_typeref_row (image, tidx - 1, &error)) {
7094 char *msg = g_strdup_printf ("Invalid type token 0x%08x due to '%s'", type_token, mono_error_get_message (&error));
7095 mono_error_cleanup (&error);
7099 mono_metadata_decode_row (t, tidx-1, cols, MONO_TYPEREF_SIZE);
7100 name = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAME]);
7101 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAMESPACE]);
7102 if (strlen (nspace) == 0)
7103 return g_strdup_printf ("%s", name);
7105 return g_strdup_printf ("%s.%s", nspace, name);
7108 case MONO_TOKEN_TYPE_SPEC:
7109 return g_strdup_printf ("Typespec 0x%08x", type_token);
7111 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
7116 mono_assembly_name_from_token (MonoImage *image, guint32 type_token)
7118 if (image_is_dynamic (image))
7119 return g_strdup_printf ("DynamicAssembly %s", image->name);
7121 switch (type_token & 0xff000000){
7122 case MONO_TOKEN_TYPE_DEF:
7123 if (image->assembly)
7124 return mono_stringify_assembly_name (&image->assembly->aname);
7125 else if (image->assembly_name)
7126 return g_strdup (image->assembly_name);
7127 return g_strdup_printf ("%s", image->name ? image->name : "[Could not resolve assembly name");
7128 case MONO_TOKEN_TYPE_REF: {
7130 MonoAssemblyName aname;
7131 guint32 cols [MONO_TYPEREF_SIZE];
7132 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEREF];
7133 guint32 idx = mono_metadata_token_index (type_token);
7136 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
7138 if (!mono_verifier_verify_typeref_row (image, idx - 1, &error)) {
7139 char *msg = g_strdup_printf ("Invalid type token 0x%08x due to '%s'", type_token, mono_error_get_message (&error));
7140 mono_error_cleanup (&error);
7143 mono_metadata_decode_row (t, idx-1, cols, MONO_TYPEREF_SIZE);
7145 idx = cols [MONO_TYPEREF_SCOPE] >> MONO_RESOLUTION_SCOPE_BITS;
7146 switch (cols [MONO_TYPEREF_SCOPE] & MONO_RESOLUTION_SCOPE_MASK) {
7147 case MONO_RESOLUTION_SCOPE_MODULE:
7149 return g_strdup ("");
7150 case MONO_RESOLUTION_SCOPE_MODULEREF:
7152 return g_strdup ("");
7153 case MONO_RESOLUTION_SCOPE_TYPEREF:
7155 return g_strdup ("");
7156 case MONO_RESOLUTION_SCOPE_ASSEMBLYREF:
7157 mono_assembly_get_assemblyref (image, idx - 1, &aname);
7158 return mono_stringify_assembly_name (&aname);
7160 g_assert_not_reached ();
7164 case MONO_TOKEN_TYPE_SPEC:
7166 return g_strdup ("");
7168 g_assert_not_reached ();
7175 * mono_class_get_full:
7176 * @image: the image where the class resides
7177 * @type_token: the token for the class
7178 * @context: the generic context used to evaluate generic instantiations in
7179 * @deprecated: Functions that expose MonoGenericContext are going away in mono 4.0
7181 * Returns: The MonoClass that represents @type_token in @image
7184 mono_class_get_full (MonoImage *image, guint32 type_token, MonoGenericContext *context)
7188 klass = mono_class_get_checked (image, type_token, &error);
7190 if (klass && context && mono_metadata_token_table (type_token) == MONO_TABLE_TYPESPEC)
7191 klass = mono_class_inflate_generic_class_checked (klass, context, &error);
7193 g_assert (mono_error_ok (&error)); /* FIXME deprecate this function and forbit the runtime from using it. */
7199 mono_class_get_and_inflate_typespec_checked (MonoImage *image, guint32 type_token, MonoGenericContext *context, MonoError *error)
7203 mono_error_init (error);
7204 klass = mono_class_get_checked (image, type_token, error);
7206 if (klass && context && mono_metadata_token_table (type_token) == MONO_TABLE_TYPESPEC)
7207 klass = mono_class_inflate_generic_class_checked (klass, context, error);
7212 * mono_class_get_checked:
7213 * @image: the image where the class resides
7214 * @type_token: the token for the class
7215 * @error: error object to return any error
7217 * Returns: The MonoClass that represents @type_token in @image, or NULL on error.
7220 mono_class_get_checked (MonoImage *image, guint32 type_token, MonoError *error)
7222 MonoClass *klass = NULL;
7224 mono_error_init (error);
7226 if (image_is_dynamic (image)) {
7227 int table = mono_metadata_token_table (type_token);
7229 if (table != MONO_TABLE_TYPEDEF && table != MONO_TABLE_TYPEREF && table != MONO_TABLE_TYPESPEC) {
7230 mono_error_set_bad_image (error, image,"Bad token table for dynamic image: %x", table);
7233 klass = (MonoClass *)mono_lookup_dynamic_token (image, type_token, NULL, error);
7237 switch (type_token & 0xff000000){
7238 case MONO_TOKEN_TYPE_DEF:
7239 klass = mono_class_create_from_typedef (image, type_token, error);
7241 case MONO_TOKEN_TYPE_REF:
7242 klass = mono_class_from_typeref_checked (image, type_token, error);
7244 case MONO_TOKEN_TYPE_SPEC:
7245 klass = mono_class_create_from_typespec (image, type_token, NULL, error);
7248 mono_error_set_bad_image (error, image, "Unknown type token %x", type_token & 0xff000000);
7252 /* Generic case, should be avoided for when a better error is possible. */
7253 if (!klass && mono_error_ok (error)) {
7254 char *name = mono_class_name_from_token (image, type_token);
7255 char *assembly = mono_assembly_name_from_token (image, type_token);
7256 mono_error_set_type_load_name (error, name, assembly, "Could not resolve type with token %08x", type_token);
7264 * mono_type_get_checked:
7265 * @image: the image where the type resides
7266 * @type_token: the token for the type
7267 * @context: the generic context used to evaluate generic instantiations in
7268 * @error: Error handling context
7270 * This functions exists to fullfill the fact that sometimes it's desirable to have access to the
7272 * Returns: The MonoType that represents @type_token in @image
7275 mono_type_get_checked (MonoImage *image, guint32 type_token, MonoGenericContext *context, MonoError *error)
7277 MonoType *type = NULL;
7278 gboolean inflated = FALSE;
7280 mono_error_init (error);
7282 //FIXME: this will not fix the very issue for which mono_type_get_full exists -but how to do it then?
7283 if (image_is_dynamic (image)) {
7284 MonoClass *klass = (MonoClass *)mono_lookup_dynamic_token (image, type_token, context, error);
7285 return_val_if_nok (error, NULL);
7286 return mono_class_get_type (klass);
7289 if ((type_token & 0xff000000) != MONO_TOKEN_TYPE_SPEC) {
7290 MonoClass *klass = mono_class_get_checked (image, type_token, error);
7297 return mono_class_get_type (klass);
7300 type = mono_type_retrieve_from_typespec (image, type_token, context, &inflated, error);
7307 MonoType *tmp = type;
7308 type = mono_class_get_type (mono_class_from_mono_type (type));
7309 /* FIXME: This is a workaround fo the fact that a typespec token sometimes reference to the generic type definition.
7310 * A MonoClass::byval_arg of a generic type definion has type CLASS.
7311 * Some parts of mono create a GENERICINST to reference a generic type definition and this generates confict with byval_arg.
7313 * The long term solution is to chaise this places and make then set MonoType::type correctly.
7315 if (type->type != tmp->type)
7318 mono_metadata_free_type (tmp);
7325 * @image: image where the class token will be looked up.
7326 * @type_token: a type token from the image
7328 * Returns the MonoClass with the given @type_token on the @image
7331 mono_class_get (MonoImage *image, guint32 type_token)
7333 return mono_class_get_full (image, type_token, NULL);
7337 * mono_image_init_name_cache:
7339 * Initializes the class name cache stored in image->name_cache.
7341 * LOCKING: Acquires the corresponding image lock.
7344 mono_image_init_name_cache (MonoImage *image)
7346 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEDEF];
7347 guint32 cols [MONO_TYPEDEF_SIZE];
7350 guint32 i, visib, nspace_index;
7351 GHashTable *name_cache2, *nspace_table, *the_name_cache;
7353 if (image->name_cache)
7356 the_name_cache = g_hash_table_new (g_str_hash, g_str_equal);
7358 if (image_is_dynamic (image)) {
7359 mono_image_lock (image);
7360 if (image->name_cache) {
7361 /* Somebody initialized it before us */
7362 g_hash_table_destroy (the_name_cache);
7364 mono_atomic_store_release (&image->name_cache, the_name_cache);
7366 mono_image_unlock (image);
7370 /* Temporary hash table to avoid lookups in the nspace_table */
7371 name_cache2 = g_hash_table_new (NULL, NULL);
7373 for (i = 1; i <= t->rows; ++i) {
7374 mono_metadata_decode_row (t, i - 1, cols, MONO_TYPEDEF_SIZE);
7375 visib = cols [MONO_TYPEDEF_FLAGS] & TYPE_ATTRIBUTE_VISIBILITY_MASK;
7377 * Nested types are accessed from the nesting name. We use the fact that nested types use different visibility flags
7378 * than toplevel types, thus avoiding the need to grovel through the NESTED_TYPE table
7380 if (visib >= TYPE_ATTRIBUTE_NESTED_PUBLIC && visib <= TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM)
7382 name = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
7383 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
7385 nspace_index = cols [MONO_TYPEDEF_NAMESPACE];
7386 nspace_table = (GHashTable *)g_hash_table_lookup (name_cache2, GUINT_TO_POINTER (nspace_index));
7387 if (!nspace_table) {
7388 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
7389 g_hash_table_insert (the_name_cache, (char*)nspace, nspace_table);
7390 g_hash_table_insert (name_cache2, GUINT_TO_POINTER (nspace_index),
7393 g_hash_table_insert (nspace_table, (char *) name, GUINT_TO_POINTER (i));
7396 /* Load type names from EXPORTEDTYPES table */
7398 MonoTableInfo *t = &image->tables [MONO_TABLE_EXPORTEDTYPE];
7399 guint32 cols [MONO_EXP_TYPE_SIZE];
7402 for (i = 0; i < t->rows; ++i) {
7403 mono_metadata_decode_row (t, i, cols, MONO_EXP_TYPE_SIZE);
7405 guint32 impl = cols [MONO_EXP_TYPE_IMPLEMENTATION];
7406 if ((impl & MONO_IMPLEMENTATION_MASK) == MONO_IMPLEMENTATION_EXP_TYPE)
7410 name = mono_metadata_string_heap (image, cols [MONO_EXP_TYPE_NAME]);
7411 nspace = mono_metadata_string_heap (image, cols [MONO_EXP_TYPE_NAMESPACE]);
7413 nspace_index = cols [MONO_EXP_TYPE_NAMESPACE];
7414 nspace_table = (GHashTable *)g_hash_table_lookup (name_cache2, GUINT_TO_POINTER (nspace_index));
7415 if (!nspace_table) {
7416 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
7417 g_hash_table_insert (the_name_cache, (char*)nspace, nspace_table);
7418 g_hash_table_insert (name_cache2, GUINT_TO_POINTER (nspace_index),
7421 g_hash_table_insert (nspace_table, (char *) name, GUINT_TO_POINTER (mono_metadata_make_token (MONO_TABLE_EXPORTEDTYPE, i + 1)));
7425 g_hash_table_destroy (name_cache2);
7427 mono_image_lock (image);
7428 if (image->name_cache) {
7429 /* Somebody initialized it before us */
7430 g_hash_table_destroy (the_name_cache);
7432 mono_atomic_store_release (&image->name_cache, the_name_cache);
7434 mono_image_unlock (image);
7437 /*FIXME Only dynamic assemblies should allow this operation.*/
7439 mono_image_add_to_name_cache (MonoImage *image, const char *nspace,
7440 const char *name, guint32 index)
7442 GHashTable *nspace_table;
7443 GHashTable *name_cache;
7446 mono_image_init_name_cache (image);
7447 mono_image_lock (image);
7449 name_cache = image->name_cache;
7450 if (!(nspace_table = (GHashTable *)g_hash_table_lookup (name_cache, nspace))) {
7451 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
7452 g_hash_table_insert (name_cache, (char *)nspace, (char *)nspace_table);
7455 if ((old_index = GPOINTER_TO_UINT (g_hash_table_lookup (nspace_table, (char*) name))))
7456 g_error ("overrwritting old token %x on image %s for type %s::%s", old_index, image->name, nspace, name);
7458 g_hash_table_insert (nspace_table, (char *) name, GUINT_TO_POINTER (index));
7460 mono_image_unlock (image);
7469 find_nocase (gpointer key, gpointer value, gpointer user_data)
7471 char *name = (char*)key;
7472 FindUserData *data = (FindUserData*)user_data;
7474 if (!data->value && (mono_utf8_strcasecmp (name, (char*)data->key) == 0))
7475 data->value = value;
7479 * mono_class_from_name_case:
7480 * @image: The MonoImage where the type is looked up in
7481 * @name_space: the type namespace
7482 * @name: the type short name.
7483 * @deprecated: use the mono_class_from_name_case_checked variant instead.
7485 * Obtains a MonoClass with a given namespace and a given name which
7486 * is located in the given MonoImage. The namespace and name
7487 * lookups are case insensitive.
7490 mono_class_from_name_case (MonoImage *image, const char* name_space, const char *name)
7493 MonoClass *res = mono_class_from_name_case_checked (image, name_space, name, &error);
7494 mono_error_cleanup (&error);
7500 * mono_class_from_name_case:
7501 * @image: The MonoImage where the type is looked up in
7502 * @name_space: the type namespace
7503 * @name: the type short name.
7506 * Obtains a MonoClass with a given namespace and a given name which
7507 * is located in the given MonoImage. The namespace and name
7508 * lookups are case insensitive.
7510 * Returns: The MonoClass if the given namespace and name were found, or NULL if it
7511 * was not found. The @error object will contain information about the problem
7515 mono_class_from_name_case_checked (MonoImage *image, const char *name_space, const char *name, MonoError *error)
7517 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEDEF];
7518 guint32 cols [MONO_TYPEDEF_SIZE];
7523 mono_error_init (error);
7525 if (image_is_dynamic (image)) {
7527 FindUserData user_data;
7529 mono_image_init_name_cache (image);
7530 mono_image_lock (image);
7532 user_data.key = name_space;
7533 user_data.value = NULL;
7534 g_hash_table_foreach (image->name_cache, find_nocase, &user_data);
7536 if (user_data.value) {
7537 GHashTable *nspace_table = (GHashTable*)user_data.value;
7539 user_data.key = name;
7540 user_data.value = NULL;
7542 g_hash_table_foreach (nspace_table, find_nocase, &user_data);
7544 if (user_data.value)
7545 token = GPOINTER_TO_UINT (user_data.value);
7548 mono_image_unlock (image);
7551 return mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | token, error);
7557 /* add a cache if needed */
7558 for (i = 1; i <= t->rows; ++i) {
7559 mono_metadata_decode_row (t, i - 1, cols, MONO_TYPEDEF_SIZE);
7560 visib = cols [MONO_TYPEDEF_FLAGS] & TYPE_ATTRIBUTE_VISIBILITY_MASK;
7562 * Nested types are accessed from the nesting name. We use the fact that nested types use different visibility flags
7563 * than toplevel types, thus avoiding the need to grovel through the NESTED_TYPE table
7565 if (visib >= TYPE_ATTRIBUTE_NESTED_PUBLIC && visib <= TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM)
7567 n = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
7568 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
7569 if (mono_utf8_strcasecmp (n, name) == 0 && mono_utf8_strcasecmp (nspace, name_space) == 0)
7570 return mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | i, error);
7576 return_nested_in (MonoClass *klass, char *nested)
7579 char *s = strchr (nested, '/');
7580 gpointer iter = NULL;
7587 while ((found = mono_class_get_nested_types (klass, &iter))) {
7588 if (strcmp (found->name, nested) == 0) {
7590 return return_nested_in (found, s);
7598 search_modules (MonoImage *image, const char *name_space, const char *name, MonoError *error)
7600 MonoTableInfo *file_table = &image->tables [MONO_TABLE_FILE];
7601 MonoImage *file_image;
7605 mono_error_init (error);
7608 * The EXPORTEDTYPES table only contains public types, so have to search the
7610 * Note: image->modules contains the contents of the MODULEREF table, while
7611 * the real module list is in the FILE table.
7613 for (i = 0; i < file_table->rows; i++) {
7614 guint32 cols [MONO_FILE_SIZE];
7615 mono_metadata_decode_row (file_table, i, cols, MONO_FILE_SIZE);
7616 if (cols [MONO_FILE_FLAGS] == FILE_CONTAINS_NO_METADATA)
7619 file_image = mono_image_load_file_for_image_checked (image, i + 1, error);
7621 klass = mono_class_from_name_checked (file_image, name_space, name, error);
7622 if (klass || !is_ok (error))
7631 mono_class_from_name_checked_aux (MonoImage *image, const char* name_space, const char *name, GHashTable* visited_images, MonoError *error)
7633 GHashTable *nspace_table;
7634 MonoImage *loaded_image;
7641 mono_error_init (error);
7643 // Checking visited images avoids stack overflows when cyclic references exist.
7644 if (g_hash_table_lookup (visited_images, image))
7647 g_hash_table_insert (visited_images, image, GUINT_TO_POINTER(1));
7649 if ((nested = strchr (name, '/'))) {
7650 int pos = nested - name;
7651 int len = strlen (name);
7654 memcpy (buf, name, len + 1);
7656 nested = buf + pos + 1;
7660 /* FIXME: get_class_from_name () can't handle types in the EXPORTEDTYPE table */
7661 if (get_class_from_name && image->tables [MONO_TABLE_EXPORTEDTYPE].rows == 0) {
7662 gboolean res = get_class_from_name (image, name_space, name, &klass);
7665 klass = search_modules (image, name_space, name, error);
7670 return klass ? return_nested_in (klass, nested) : NULL;
7676 mono_image_init_name_cache (image);
7677 mono_image_lock (image);
7679 nspace_table = (GHashTable *)g_hash_table_lookup (image->name_cache, name_space);
7682 token = GPOINTER_TO_UINT (g_hash_table_lookup (nspace_table, name));
7684 mono_image_unlock (image);
7686 if (!token && image_is_dynamic (image) && image->modules) {
7687 /* Search modules as well */
7688 for (i = 0; i < image->module_count; ++i) {
7689 MonoImage *module = image->modules [i];
7691 klass = mono_class_from_name_checked (module, name_space, name, error);
7692 if (klass || !is_ok (error))
7698 klass = search_modules (image, name_space, name, error);
7699 if (klass || !is_ok (error))
7704 if (mono_metadata_token_table (token) == MONO_TABLE_EXPORTEDTYPE) {
7705 MonoTableInfo *t = &image->tables [MONO_TABLE_EXPORTEDTYPE];
7706 guint32 cols [MONO_EXP_TYPE_SIZE];
7709 idx = mono_metadata_token_index (token);
7711 mono_metadata_decode_row (t, idx - 1, cols, MONO_EXP_TYPE_SIZE);
7713 impl = cols [MONO_EXP_TYPE_IMPLEMENTATION];
7714 if ((impl & MONO_IMPLEMENTATION_MASK) == MONO_IMPLEMENTATION_FILE) {
7715 loaded_image = mono_assembly_load_module_checked (image->assembly, impl >> MONO_IMPLEMENTATION_BITS, error);
7718 klass = mono_class_from_name_checked_aux (loaded_image, name_space, name, visited_images, error);
7720 return klass ? return_nested_in (klass, nested) : NULL;
7722 } else if ((impl & MONO_IMPLEMENTATION_MASK) == MONO_IMPLEMENTATION_ASSEMBLYREF) {
7723 guint32 assembly_idx;
7725 assembly_idx = impl >> MONO_IMPLEMENTATION_BITS;
7727 mono_assembly_load_reference (image, assembly_idx - 1);
7728 g_assert (image->references [assembly_idx - 1]);
7729 if (image->references [assembly_idx - 1] == (gpointer)-1)
7731 klass = mono_class_from_name_checked_aux (image->references [assembly_idx - 1]->image, name_space, name, visited_images, error);
7733 return klass ? return_nested_in (klass, nested) : NULL;
7736 g_assert_not_reached ();
7740 token = MONO_TOKEN_TYPE_DEF | token;
7742 klass = mono_class_get_checked (image, token, error);
7744 return return_nested_in (klass, nested);
7749 * mono_class_from_name_checked:
7750 * @image: The MonoImage where the type is looked up in
7751 * @name_space: the type namespace
7752 * @name: the type short name.
7754 * Obtains a MonoClass with a given namespace and a given name which
7755 * is located in the given MonoImage.
7757 * Works like mono_class_from_name, but error handling is tricky. It can return NULL and have no error
7758 * set if the class was not found or it will return NULL and set the error if there was a loading error.
7761 mono_class_from_name_checked (MonoImage *image, const char* name_space, const char *name, MonoError *error)
7764 GHashTable *visited_images;
7766 visited_images = g_hash_table_new (g_direct_hash, g_direct_equal);
7768 klass = mono_class_from_name_checked_aux (image, name_space, name, visited_images, error);
7770 g_hash_table_destroy (visited_images);
7776 * mono_class_from_name:
7777 * @image: The MonoImage where the type is looked up in
7778 * @name_space: the type namespace
7779 * @name: the type short name.
7781 * Obtains a MonoClass with a given namespace and a given name which
7782 * is located in the given MonoImage.
7784 * To reference nested classes, use the "/" character as a separator.
7785 * For example use "Foo/Bar" to reference the class Bar that is nested
7786 * inside Foo, like this: "class Foo { class Bar {} }".
7789 mono_class_from_name (MonoImage *image, const char* name_space, const char *name)
7794 klass = mono_class_from_name_checked (image, name_space, name, &error);
7795 mono_error_cleanup (&error); /* FIXME Don't swallow the error */
7801 * mono_class_load_from_name:
7802 * @image: The MonoImage where the type is looked up in
7803 * @name_space: the type namespace
7804 * @name: the type short name.
7806 * This function works exactly like mono_class_from_name but it will abort if the class is not found.
7807 * This function should be used by the runtime for critical types to which there's no way to recover but crash
7808 * If they are missing. Thing of System.Object or System.String.
7811 mono_class_load_from_name (MonoImage *image, const char* name_space, const char *name)
7816 klass = mono_class_from_name_checked (image, name_space, name, &error);
7818 g_error ("Runtime critical type %s.%s not found", name_space, name);
7819 if (!mono_error_ok (&error))
7820 g_error ("Could not load runtime critical type %s.%s due to %s", name_space, name, mono_error_get_message (&error));
7825 * mono_class_try_load_from_name:
7826 * @image: The MonoImage where the type is looked up in
7827 * @name_space: the type namespace
7828 * @name: the type short name.
7830 * This function tries to load a type, returning the class was found or NULL otherwise.
7831 * This function should be used by the runtime when probing for optional types, those that could have being linked out.
7833 * Big design consideration. This function aborts if there was an error loading the type. This prevents us from missing
7834 * a type that we would otherwise assume to be available but was not due some error.
7838 mono_class_try_load_from_name (MonoImage *image, const char* name_space, const char *name)
7843 klass = mono_class_from_name_checked (image, name_space, name, &error);
7844 if (!mono_error_ok (&error))
7845 g_error ("Could not load runtime critical type %s.%s due to %s", name_space, name, mono_error_get_message (&error));
7851 * mono_class_is_subclass_of:
7852 * @klass: class to probe if it is a subclass of another one
7853 * @klassc: the class we suspect is the base class
7854 * @check_interfaces: whether we should perform interface checks
7856 * This method determines whether @klass is a subclass of @klassc.
7858 * If the @check_interfaces flag is set, then if @klassc is an interface
7859 * this method return TRUE if the @klass implements the interface or
7860 * if @klass is an interface, if one of its base classes is @klass.
7862 * If @check_interfaces is false then, then if @klass is not an interface
7863 * then it returns TRUE if the @klass is a subclass of @klassc.
7865 * if @klass is an interface and @klassc is System.Object, then this function
7870 mono_class_is_subclass_of (MonoClass *klass, MonoClass *klassc,
7871 gboolean check_interfaces)
7873 /* FIXME test for interfaces with variant generic arguments */
7874 mono_class_init (klass);
7875 mono_class_init (klassc);
7877 if (check_interfaces && MONO_CLASS_IS_INTERFACE (klassc) && !MONO_CLASS_IS_INTERFACE (klass)) {
7878 if (MONO_CLASS_IMPLEMENTS_INTERFACE (klass, klassc->interface_id))
7880 } else if (check_interfaces && MONO_CLASS_IS_INTERFACE (klassc) && MONO_CLASS_IS_INTERFACE (klass)) {
7883 for (i = 0; i < klass->interface_count; i ++) {
7884 MonoClass *ic = klass->interfaces [i];
7889 if (!MONO_CLASS_IS_INTERFACE (klass) && mono_class_has_parent (klass, klassc))
7894 * MS.NET thinks interfaces are a subclass of Object, so we think it as
7897 if (klassc == mono_defaults.object_class)
7904 mono_type_is_generic_argument (MonoType *type)
7906 return type->type == MONO_TYPE_VAR || type->type == MONO_TYPE_MVAR;
7910 mono_class_has_variant_generic_params (MonoClass *klass)
7913 MonoGenericContainer *container;
7915 if (!mono_class_is_ginst (klass))
7918 container = mono_class_get_generic_container (mono_class_get_generic_class (klass)->container_class);
7920 for (i = 0; i < container->type_argc; ++i)
7921 if (mono_generic_container_get_param_info (container, i)->flags & (MONO_GEN_PARAM_VARIANT|MONO_GEN_PARAM_COVARIANT))
7928 mono_gparam_is_reference_conversible (MonoClass *target, MonoClass *candidate, gboolean check_for_reference_conv)
7930 if (target == candidate)
7933 if (check_for_reference_conv &&
7934 mono_type_is_generic_argument (&target->byval_arg) &&
7935 mono_type_is_generic_argument (&candidate->byval_arg)) {
7936 MonoGenericParam *gparam = candidate->byval_arg.data.generic_param;
7937 MonoGenericParamInfo *pinfo = mono_generic_param_info (gparam);
7939 if (!pinfo || (pinfo->flags & GENERIC_PARAMETER_ATTRIBUTE_REFERENCE_TYPE_CONSTRAINT) == 0)
7942 if (!mono_class_is_assignable_from (target, candidate))
7948 * @container the generic container from the GTD
7949 * @klass: the class to be assigned to
7950 * @oklass: the source class
7952 * Both @klass and @oklass must be instances of the same generic interface.
7954 * Returns: TRUE if @klass can be assigned to a @klass variable
7957 mono_class_is_variant_compatible (MonoClass *klass, MonoClass *oklass, gboolean check_for_reference_conv)
7960 MonoType **klass_argv, **oklass_argv;
7961 MonoClass *klass_gtd = mono_class_get_generic_type_definition (klass);
7962 MonoGenericContainer *container = mono_class_get_generic_container (klass_gtd);
7964 if (klass == oklass)
7967 /*Viable candidates are instances of the same generic interface*/
7968 if (mono_class_get_generic_type_definition (oklass) != klass_gtd || oklass == klass_gtd)
7971 klass_argv = &mono_class_get_generic_class (klass)->context.class_inst->type_argv [0];
7972 oklass_argv = &mono_class_get_generic_class (oklass)->context.class_inst->type_argv [0];
7974 for (j = 0; j < container->type_argc; ++j) {
7975 MonoClass *param1_class = mono_class_from_mono_type (klass_argv [j]);
7976 MonoClass *param2_class = mono_class_from_mono_type (oklass_argv [j]);
7978 if (param1_class->valuetype != param2_class->valuetype || (param1_class->valuetype && param1_class != param2_class))
7982 * The _VARIANT and _COVARIANT constants should read _COVARIANT and
7983 * _CONTRAVARIANT, but they are in a public header so we can't fix it.
7985 if (param1_class != param2_class) {
7986 if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_VARIANT) {
7987 if (!mono_gparam_is_reference_conversible (param1_class, param2_class, check_for_reference_conv))
7989 } else if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_COVARIANT) {
7990 if (!mono_gparam_is_reference_conversible (param2_class, param1_class, check_for_reference_conv))
8000 mono_gparam_is_assignable_from (MonoClass *target, MonoClass *candidate)
8002 MonoGenericParam *gparam, *ogparam;
8003 MonoGenericParamInfo *tinfo, *cinfo;
8004 MonoClass **candidate_class;
8005 gboolean class_constraint_satisfied, valuetype_constraint_satisfied;
8008 if (target == candidate)
8010 if (target->byval_arg.type != candidate->byval_arg.type)
8013 gparam = target->byval_arg.data.generic_param;
8014 ogparam = candidate->byval_arg.data.generic_param;
8015 tinfo = mono_generic_param_info (gparam);
8016 cinfo = mono_generic_param_info (ogparam);
8018 class_constraint_satisfied = FALSE;
8019 valuetype_constraint_satisfied = FALSE;
8021 /*candidate must have a super set of target's special constraints*/
8022 tmask = tinfo->flags & GENERIC_PARAMETER_ATTRIBUTE_SPECIAL_CONSTRAINTS_MASK;
8023 cmask = cinfo->flags & GENERIC_PARAMETER_ATTRIBUTE_SPECIAL_CONSTRAINTS_MASK;
8025 if (cinfo->constraints) {
8026 for (candidate_class = cinfo->constraints; *candidate_class; ++candidate_class) {
8027 MonoClass *cc = *candidate_class;
8029 if (mono_type_is_reference (&cc->byval_arg) && !MONO_CLASS_IS_INTERFACE (cc))
8030 class_constraint_satisfied = TRUE;
8031 else if (!mono_type_is_reference (&cc->byval_arg) && !MONO_CLASS_IS_INTERFACE (cc))
8032 valuetype_constraint_satisfied = TRUE;
8035 class_constraint_satisfied |= (cmask & GENERIC_PARAMETER_ATTRIBUTE_REFERENCE_TYPE_CONSTRAINT) != 0;
8036 valuetype_constraint_satisfied |= (cmask & GENERIC_PARAMETER_ATTRIBUTE_VALUE_TYPE_CONSTRAINT) != 0;
8038 if ((tmask & GENERIC_PARAMETER_ATTRIBUTE_REFERENCE_TYPE_CONSTRAINT) && !class_constraint_satisfied)
8040 if ((tmask & GENERIC_PARAMETER_ATTRIBUTE_VALUE_TYPE_CONSTRAINT) && !valuetype_constraint_satisfied)
8042 if ((tmask & GENERIC_PARAMETER_ATTRIBUTE_CONSTRUCTOR_CONSTRAINT) && !((cmask & GENERIC_PARAMETER_ATTRIBUTE_CONSTRUCTOR_CONSTRAINT) ||
8043 valuetype_constraint_satisfied)) {
8048 /*candidate type constraints must be a superset of target's*/
8049 if (tinfo->constraints) {
8050 MonoClass **target_class;
8051 for (target_class = tinfo->constraints; *target_class; ++target_class) {
8052 MonoClass *tc = *target_class;
8055 * A constraint from @target might inflate into @candidate itself and in that case we don't need
8056 * check it's constraints since it satisfy the constraint by itself.
8058 if (mono_metadata_type_equal (&tc->byval_arg, &candidate->byval_arg))
8061 if (!cinfo->constraints)
8064 for (candidate_class = cinfo->constraints; *candidate_class; ++candidate_class) {
8065 MonoClass *cc = *candidate_class;
8067 if (mono_class_is_assignable_from (tc, cc))
8071 * This happens when we have the following:
8073 * Bar<K> where K : IFace
8074 * Foo<T, U> where T : U where U : IFace
8076 * Bar<T> <- T here satisfy K constraint transitively through to U's constraint
8079 if (mono_type_is_generic_argument (&cc->byval_arg)) {
8080 if (mono_gparam_is_assignable_from (target, cc))
8084 if (!*candidate_class)
8089 /*candidate itself must have a constraint that satisfy target*/
8090 if (cinfo->constraints) {
8091 for (candidate_class = cinfo->constraints; *candidate_class; ++candidate_class) {
8092 MonoClass *cc = *candidate_class;
8093 if (mono_class_is_assignable_from (target, cc))
8101 * mono_class_is_assignable_from:
8102 * @klass: the class to be assigned to
8103 * @oklass: the source class
8105 * Returns: TRUE if an instance of object oklass can be assigned to an
8106 * instance of object @klass
8109 mono_class_is_assignable_from (MonoClass *klass, MonoClass *oklass)
8112 /*FIXME this will cause a lot of irrelevant stuff to be loaded.*/
8114 mono_class_init (klass);
8116 if (!oklass->inited)
8117 mono_class_init (oklass);
8119 if (mono_class_has_failure (klass) || mono_class_has_failure (oklass))
8122 if (mono_type_is_generic_argument (&klass->byval_arg)) {
8123 if (!mono_type_is_generic_argument (&oklass->byval_arg))
8125 return mono_gparam_is_assignable_from (klass, oklass);
8128 if (MONO_CLASS_IS_INTERFACE (klass)) {
8129 if ((oklass->byval_arg.type == MONO_TYPE_VAR) || (oklass->byval_arg.type == MONO_TYPE_MVAR)) {
8130 MonoGenericParam *gparam = oklass->byval_arg.data.generic_param;
8131 MonoClass **constraints = mono_generic_container_get_param_info (gparam->owner, gparam->num)->constraints;
8135 for (i = 0; constraints [i]; ++i) {
8136 if (mono_class_is_assignable_from (klass, constraints [i]))
8144 /* interface_offsets might not be set for dynamic classes */
8145 if (mono_class_get_ref_info_handle (oklass) && !oklass->interface_bitmap) {
8147 * oklass might be a generic type parameter but they have
8148 * interface_offsets set.
8150 gboolean result = mono_reflection_call_is_assignable_to (oklass, klass, &error);
8151 if (!is_ok (&error)) {
8152 mono_error_cleanup (&error);
8157 if (!oklass->interface_bitmap)
8158 /* Happens with generic instances of not-yet created dynamic types */
8160 if (MONO_CLASS_IMPLEMENTS_INTERFACE (oklass, klass->interface_id))
8163 if (klass->is_array_special_interface && oklass->rank == 1) {
8164 //XXX we could offset this by having the cast target computed at JIT time
8165 //XXX we could go even further and emit a wrapper that would do the extra type check
8166 MonoClass *iface_klass = mono_class_from_mono_type (mono_class_get_generic_class (klass)->context.class_inst->type_argv [0]);
8167 MonoClass *obj_klass = oklass->cast_class; //This gets us the cast class of element type of the array
8169 // 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
8170 // We can't apply it for ref types as this would go wrong with arrays - IList<byte[]> would have byte tested
8171 if (iface_klass->valuetype)
8172 iface_klass = iface_klass->cast_class;
8174 //array covariant casts only operates on scalar to scalar
8175 //This is so int[] can't be casted to IComparable<int>[]
8176 if (!(obj_klass->valuetype && !iface_klass->valuetype) && mono_class_is_assignable_from (iface_klass, obj_klass))
8180 if (mono_class_has_variant_generic_params (klass)) {
8182 mono_class_setup_interfaces (oklass, &error);
8183 if (!mono_error_ok (&error)) {
8184 mono_error_cleanup (&error);
8188 /*klass is a generic variant interface, We need to extract from oklass a list of ifaces which are viable candidates.*/
8189 for (i = 0; i < oklass->interface_offsets_count; ++i) {
8190 MonoClass *iface = oklass->interfaces_packed [i];
8192 if (mono_class_is_variant_compatible (klass, iface, FALSE))
8197 } else if (klass->delegate) {
8198 if (mono_class_has_variant_generic_params (klass) && mono_class_is_variant_compatible (klass, oklass, FALSE))
8200 }else if (klass->rank) {
8201 MonoClass *eclass, *eoclass;
8203 if (oklass->rank != klass->rank)
8206 /* vectors vs. one dimensional arrays */
8207 if (oklass->byval_arg.type != klass->byval_arg.type)
8210 eclass = klass->cast_class;
8211 eoclass = oklass->cast_class;
8214 * a is b does not imply a[] is b[] when a is a valuetype, and
8215 * b is a reference type.
8218 if (eoclass->valuetype) {
8219 if ((eclass == mono_defaults.enum_class) ||
8220 (eclass == mono_defaults.enum_class->parent) ||
8221 (eclass == mono_defaults.object_class))
8225 return mono_class_is_assignable_from (klass->cast_class, oklass->cast_class);
8226 } else if (mono_class_is_nullable (klass)) {
8227 if (mono_class_is_nullable (oklass))
8228 return mono_class_is_assignable_from (klass->cast_class, oklass->cast_class);
8230 return mono_class_is_assignable_from (klass->cast_class, oklass);
8231 } else if (klass == mono_defaults.object_class)
8234 return mono_class_has_parent (oklass, klass);
8237 /*Check if @oklass is variant compatible with @klass.*/
8239 mono_class_is_variant_compatible_slow (MonoClass *klass, MonoClass *oklass)
8242 MonoType **klass_argv, **oklass_argv;
8243 MonoClass *klass_gtd = mono_class_get_generic_type_definition (klass);
8244 MonoGenericContainer *container = mono_class_get_generic_container (klass_gtd);
8246 /*Viable candidates are instances of the same generic interface*/
8247 if (mono_class_get_generic_type_definition (oklass) != klass_gtd || oklass == klass_gtd)
8250 klass_argv = &mono_class_get_generic_class (klass)->context.class_inst->type_argv [0];
8251 oklass_argv = &mono_class_get_generic_class (oklass)->context.class_inst->type_argv [0];
8253 for (j = 0; j < container->type_argc; ++j) {
8254 MonoClass *param1_class = mono_class_from_mono_type (klass_argv [j]);
8255 MonoClass *param2_class = mono_class_from_mono_type (oklass_argv [j]);
8257 if (param1_class->valuetype != param2_class->valuetype)
8261 * The _VARIANT and _COVARIANT constants should read _COVARIANT and
8262 * _CONTRAVARIANT, but they are in a public header so we can't fix it.
8264 if (param1_class != param2_class) {
8265 if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_VARIANT) {
8266 if (!mono_class_is_assignable_from_slow (param1_class, param2_class))
8268 } else if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_COVARIANT) {
8269 if (!mono_class_is_assignable_from_slow (param2_class, param1_class))
8277 /*Check if @candidate implements the interface @target*/
8279 mono_class_implement_interface_slow (MonoClass *target, MonoClass *candidate)
8283 gboolean is_variant = mono_class_has_variant_generic_params (target);
8285 if (is_variant && MONO_CLASS_IS_INTERFACE (candidate)) {
8286 if (mono_class_is_variant_compatible_slow (target, candidate))
8291 if (candidate == target)
8294 /*A TypeBuilder can have more interfaces on tb->interfaces than on candidate->interfaces*/
8295 if (image_is_dynamic (candidate->image) && !candidate->wastypebuilder) {
8296 MonoReflectionTypeBuilder *tb = (MonoReflectionTypeBuilder *)mono_class_get_ref_info_raw (candidate); /* FIXME use handles */
8298 if (tb && tb->interfaces) {
8299 for (j = mono_array_length (tb->interfaces) - 1; j >= 0; --j) {
8300 MonoReflectionType *iface = mono_array_get (tb->interfaces, MonoReflectionType*, j);
8301 MonoClass *iface_class;
8303 /* we can't realize the type here since it can do pretty much anything. */
8306 iface_class = mono_class_from_mono_type (iface->type);
8307 if (iface_class == target)
8309 if (is_variant && mono_class_is_variant_compatible_slow (target, iface_class))
8311 if (mono_class_implement_interface_slow (target, iface_class))
8316 /*setup_interfaces don't mono_class_init anything*/
8317 /*FIXME this doesn't handle primitive type arrays.
8318 ICollection<sbyte> x byte [] won't work because candidate->interfaces, for byte[], won't have IList<sbyte>.
8319 A possible way to fix this would be to move that to setup_interfaces from setup_interface_offsets.
8321 mono_class_setup_interfaces (candidate, &error);
8322 if (!mono_error_ok (&error)) {
8323 mono_error_cleanup (&error);
8327 for (i = 0; i < candidate->interface_count; ++i) {
8328 if (candidate->interfaces [i] == target)
8331 if (is_variant && mono_class_is_variant_compatible_slow (target, candidate->interfaces [i]))
8334 if (mono_class_implement_interface_slow (target, candidate->interfaces [i]))
8338 candidate = candidate->parent;
8339 } while (candidate);
8345 * Check if @oklass can be assigned to @klass.
8346 * This function does the same as mono_class_is_assignable_from but is safe to be used from mono_class_init context.
8349 mono_class_is_assignable_from_slow (MonoClass *target, MonoClass *candidate)
8351 if (candidate == target)
8353 if (target == mono_defaults.object_class)
8356 if (mono_class_has_parent (candidate, target))
8359 /*If target is not an interface there is no need to check them.*/
8360 if (MONO_CLASS_IS_INTERFACE (target))
8361 return mono_class_implement_interface_slow (target, candidate);
8363 if (target->delegate && mono_class_has_variant_generic_params (target))
8364 return mono_class_is_variant_compatible (target, candidate, FALSE);
8367 MonoClass *eclass, *eoclass;
8369 if (target->rank != candidate->rank)
8372 /* vectors vs. one dimensional arrays */
8373 if (target->byval_arg.type != candidate->byval_arg.type)
8376 eclass = target->cast_class;
8377 eoclass = candidate->cast_class;
8380 * a is b does not imply a[] is b[] when a is a valuetype, and
8381 * b is a reference type.
8384 if (eoclass->valuetype) {
8385 if ((eclass == mono_defaults.enum_class) ||
8386 (eclass == mono_defaults.enum_class->parent) ||
8387 (eclass == mono_defaults.object_class))
8391 return mono_class_is_assignable_from_slow (target->cast_class, candidate->cast_class);
8393 /*FIXME properly handle nullables */
8394 /*FIXME properly handle (M)VAR */
8399 * mono_class_get_cctor:
8400 * @klass: A MonoClass pointer
8402 * Returns: The static constructor of @klass if it exists, NULL otherwise.
8405 mono_class_get_cctor (MonoClass *klass)
8407 MonoCachedClassInfo cached_info;
8409 if (image_is_dynamic (klass->image)) {
8411 * has_cctor is not set for these classes because mono_class_init () is
8414 return mono_class_get_method_from_name_flags (klass, ".cctor", -1, METHOD_ATTRIBUTE_SPECIAL_NAME);
8417 mono_class_init (klass);
8419 if (!klass->has_cctor)
8422 if (mono_class_is_ginst (klass) && !klass->methods)
8423 return mono_class_get_inflated_method (klass, mono_class_get_cctor (mono_class_get_generic_class (klass)->container_class));
8425 if (mono_class_get_cached_class_info (klass, &cached_info)) {
8427 MonoMethod *result = mono_get_method_checked (klass->image, cached_info.cctor_token, klass, NULL, &error);
8428 if (!mono_error_ok (&error))
8429 g_error ("Could not lookup class cctor from cached metadata due to %s", mono_error_get_message (&error));
8433 return mono_class_get_method_from_name_flags (klass, ".cctor", -1, METHOD_ATTRIBUTE_SPECIAL_NAME);
8437 * mono_class_get_finalizer:
8438 * @klass: The MonoClass pointer
8440 * Returns: The finalizer method of @klass if it exists, NULL otherwise.
8443 mono_class_get_finalizer (MonoClass *klass)
8445 MonoCachedClassInfo cached_info;
8448 mono_class_init (klass);
8449 if (!mono_class_has_finalizer (klass))
8452 if (mono_class_get_cached_class_info (klass, &cached_info)) {
8454 MonoMethod *result = mono_get_method_checked (cached_info.finalize_image, cached_info.finalize_token, NULL, NULL, &error);
8455 if (!mono_error_ok (&error))
8456 g_error ("Could not lookup finalizer from cached metadata due to %s", mono_error_get_message (&error));
8459 mono_class_setup_vtable (klass);
8460 return klass->vtable [finalize_slot];
8465 * mono_class_needs_cctor_run:
8466 * @klass: the MonoClass pointer
8467 * @caller: a MonoMethod describing the caller
8469 * Determines whenever the class has a static constructor and whenever it
8470 * needs to be called when executing CALLER.
8473 mono_class_needs_cctor_run (MonoClass *klass, MonoMethod *caller)
8477 method = mono_class_get_cctor (klass);
8479 return (method == caller) ? FALSE : TRUE;
8485 * mono_class_array_element_size:
8488 * Returns: The number of bytes an element of type @klass
8489 * uses when stored into an array.
8492 mono_class_array_element_size (MonoClass *klass)
8494 MonoType *type = &klass->byval_arg;
8497 switch (type->type) {
8500 case MONO_TYPE_BOOLEAN:
8504 case MONO_TYPE_CHAR:
8513 case MONO_TYPE_CLASS:
8514 case MONO_TYPE_STRING:
8515 case MONO_TYPE_OBJECT:
8516 case MONO_TYPE_SZARRAY:
8517 case MONO_TYPE_ARRAY:
8518 return sizeof (gpointer);
8523 case MONO_TYPE_VALUETYPE:
8524 if (type->data.klass->enumtype) {
8525 type = mono_class_enum_basetype (type->data.klass);
8526 klass = klass->element_class;
8529 return mono_class_instance_size (klass) - sizeof (MonoObject);
8530 case MONO_TYPE_GENERICINST:
8531 type = &type->data.generic_class->container_class->byval_arg;
8534 case MONO_TYPE_MVAR: {
8537 return mono_type_size (type, &align);
8539 case MONO_TYPE_VOID:
8543 g_error ("unknown type 0x%02x in mono_class_array_element_size", type->type);
8549 * mono_array_element_size:
8550 * @ac: pointer to a #MonoArrayClass
8552 * Returns: The size of single array element.
8555 mono_array_element_size (MonoClass *ac)
8557 g_assert (ac->rank);
8558 return ac->sizes.element_size;
8562 mono_ldtoken (MonoImage *image, guint32 token, MonoClass **handle_class,
8563 MonoGenericContext *context)
8566 gpointer res = mono_ldtoken_checked (image, token, handle_class, context, &error);
8567 g_assert (mono_error_ok (&error));
8572 mono_ldtoken_checked (MonoImage *image, guint32 token, MonoClass **handle_class,
8573 MonoGenericContext *context, MonoError *error)
8575 mono_error_init (error);
8577 if (image_is_dynamic (image)) {
8578 MonoClass *tmp_handle_class;
8579 gpointer obj = mono_lookup_dynamic_token_class (image, token, TRUE, &tmp_handle_class, context, error);
8581 mono_error_assert_ok (error);
8582 g_assert (tmp_handle_class);
8584 *handle_class = tmp_handle_class;
8586 if (tmp_handle_class == mono_defaults.typehandle_class)
8587 return &((MonoClass*)obj)->byval_arg;
8592 switch (token & 0xff000000) {
8593 case MONO_TOKEN_TYPE_DEF:
8594 case MONO_TOKEN_TYPE_REF:
8595 case MONO_TOKEN_TYPE_SPEC: {
8598 *handle_class = mono_defaults.typehandle_class;
8599 type = mono_type_get_checked (image, token, context, error);
8603 mono_class_init (mono_class_from_mono_type (type));
8604 /* We return a MonoType* as handle */
8607 case MONO_TOKEN_FIELD_DEF: {
8609 guint32 type = mono_metadata_typedef_from_field (image, mono_metadata_token_index (token));
8611 mono_error_set_bad_image (error, image, "Bad ldtoken %x", token);
8615 *handle_class = mono_defaults.fieldhandle_class;
8616 klass = mono_class_get_and_inflate_typespec_checked (image, MONO_TOKEN_TYPE_DEF | type, context, error);
8620 mono_class_init (klass);
8621 return mono_class_get_field (klass, token);
8623 case MONO_TOKEN_METHOD_DEF:
8624 case MONO_TOKEN_METHOD_SPEC: {
8626 meth = mono_get_method_checked (image, token, NULL, context, error);
8628 *handle_class = mono_defaults.methodhandle_class;
8634 case MONO_TOKEN_MEMBER_REF: {
8635 guint32 cols [MONO_MEMBERREF_SIZE];
8637 mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], mono_metadata_token_index (token) - 1, cols, MONO_MEMBERREF_SIZE);
8638 sig = mono_metadata_blob_heap (image, cols [MONO_MEMBERREF_SIGNATURE]);
8639 mono_metadata_decode_blob_size (sig, &sig);
8640 if (*sig == 0x6) { /* it's a field */
8642 MonoClassField *field;
8643 field = mono_field_from_token_checked (image, token, &klass, context, error);
8645 *handle_class = mono_defaults.fieldhandle_class;
8649 meth = mono_get_method_checked (image, token, NULL, context, error);
8651 *handle_class = mono_defaults.methodhandle_class;
8656 mono_error_set_bad_image (error, image, "Bad ldtoken %x", token);
8662 mono_lookup_dynamic_token (MonoImage *image, guint32 token, MonoGenericContext *context, MonoError *error)
8664 MonoClass *handle_class;
8665 mono_error_init (error);
8666 return mono_reflection_lookup_dynamic_token (image, token, TRUE, &handle_class, context, error);
8670 mono_lookup_dynamic_token_class (MonoImage *image, guint32 token, gboolean valid_token, MonoClass **handle_class, MonoGenericContext *context, MonoError *error)
8672 return mono_reflection_lookup_dynamic_token (image, token, valid_token, handle_class, context, error);
8675 static MonoGetCachedClassInfo get_cached_class_info = NULL;
8678 mono_install_get_cached_class_info (MonoGetCachedClassInfo func)
8680 get_cached_class_info = func;
8684 mono_class_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
8686 if (!get_cached_class_info)
8689 return get_cached_class_info (klass, res);
8693 mono_install_get_class_from_name (MonoGetClassFromName func)
8695 get_class_from_name = func;
8699 * mono_class_get_image:
8701 * Use this method to get the `MonoImage*` where this class came from.
8703 * Returns: The image where this class is defined.
8706 mono_class_get_image (MonoClass *klass)
8708 return klass->image;
8712 * mono_class_get_element_class:
8713 * @klass: the MonoClass to act on
8715 * Use this function to get the element class of an array.
8717 * Returns: The element class of an array.
8720 mono_class_get_element_class (MonoClass *klass)
8722 return klass->element_class;
8726 * mono_class_is_valuetype:
8727 * @klass: the MonoClass to act on
8729 * Use this method to determine if the provided `MonoClass*` represents a value type,
8730 * or a reference type.
8732 * Returns: TRUE if the MonoClass represents a ValueType, FALSE if it represents a reference type.
8735 mono_class_is_valuetype (MonoClass *klass)
8737 return klass->valuetype;
8741 * mono_class_is_enum:
8742 * @klass: the MonoClass to act on
8744 * Use this function to determine if the provided `MonoClass*` represents an enumeration.
8746 * Returns: TRUE if the MonoClass represents an enumeration.
8749 mono_class_is_enum (MonoClass *klass)
8751 return klass->enumtype;
8755 * mono_class_enum_basetype:
8756 * @klass: the MonoClass to act on
8758 * Use this function to get the underlying type for an enumeration value.
8760 * Returns: The underlying type representation for an enumeration.
8763 mono_class_enum_basetype (MonoClass *klass)
8765 if (klass->element_class == klass)
8766 /* SRE or broken types */
8769 return &klass->element_class->byval_arg;
8773 * mono_class_get_parent
8774 * @klass: the MonoClass to act on
8776 * Returns: The parent class for this class.
8779 mono_class_get_parent (MonoClass *klass)
8781 return klass->parent;
8785 * mono_class_get_nesting_type:
8786 * @klass: the MonoClass to act on
8788 * Use this function to obtain the class that the provided `MonoClass*` is nested on.
8790 * If the return is NULL, this indicates that this class is not nested.
8792 * Returns: The container type where this type is nested or NULL if this type is not a nested type.
8795 mono_class_get_nesting_type (MonoClass *klass)
8797 return klass->nested_in;
8801 * mono_class_get_rank:
8802 * @klass: the MonoClass to act on
8804 * Returns: The rank for the array (the number of dimensions).
8807 mono_class_get_rank (MonoClass *klass)
8813 * mono_class_get_name
8814 * @klass: the MonoClass to act on
8816 * Returns: The name of the class.
8819 mono_class_get_name (MonoClass *klass)
8825 * mono_class_get_namespace:
8826 * @klass: the MonoClass to act on
8828 * Returns: The namespace of the class.
8831 mono_class_get_namespace (MonoClass *klass)
8833 return klass->name_space;
8837 * mono_class_get_type:
8838 * @klass: the MonoClass to act on
8840 * This method returns the internal Type representation for the class.
8842 * Returns: The MonoType from the class.
8845 mono_class_get_type (MonoClass *klass)
8847 return &klass->byval_arg;
8851 * mono_class_get_type_token:
8852 * @klass: the MonoClass to act on
8854 * This method returns type token for the class.
8856 * Returns: The type token for the class.
8859 mono_class_get_type_token (MonoClass *klass)
8861 return klass->type_token;
8865 * mono_class_get_byref_type:
8866 * @klass: the MonoClass to act on
8871 mono_class_get_byref_type (MonoClass *klass)
8873 return &klass->this_arg;
8877 * mono_class_num_fields:
8878 * @klass: the MonoClass to act on
8880 * Returns: The number of static and instance fields in the class.
8883 mono_class_num_fields (MonoClass *klass)
8885 return mono_class_get_field_count (klass);
8889 * mono_class_num_methods:
8890 * @klass: the MonoClass to act on
8892 * Returns: The number of methods in the class.
8895 mono_class_num_methods (MonoClass *klass)
8897 return mono_class_get_method_count (klass);
8901 * mono_class_num_properties
8902 * @klass: the MonoClass to act on
8904 * Returns: The number of properties in the class.
8907 mono_class_num_properties (MonoClass *klass)
8909 mono_class_setup_properties (klass);
8911 return mono_class_get_property_info (klass)->count;
8915 * mono_class_num_events:
8916 * @klass: the MonoClass to act on
8918 * Returns: The number of events in the class.
8921 mono_class_num_events (MonoClass *klass)
8923 mono_class_setup_events (klass);
8925 return mono_class_get_event_info (klass)->count;
8929 * mono_class_get_fields:
8930 * @klass: the MonoClass to act on
8932 * This routine is an iterator routine for retrieving the fields in a class.
8934 * You must pass a gpointer that points to zero and is treated as an opaque handle to
8935 * iterate over all of the elements. When no more values are
8936 * available, the return value is NULL.
8938 * Returns: a @MonoClassField* on each iteration, or NULL when no more fields are available.
8941 mono_class_get_fields (MonoClass* klass, gpointer *iter)
8943 MonoClassField* field;
8947 mono_class_setup_fields (klass);
8948 if (mono_class_has_failure (klass))
8950 /* start from the first */
8951 if (mono_class_get_field_count (klass)) {
8952 *iter = &klass->fields [0];
8953 return &klass->fields [0];
8959 field = (MonoClassField *)*iter;
8961 if (field < &klass->fields [mono_class_get_field_count (klass)]) {
8969 * mono_class_get_methods
8970 * @klass: the MonoClass to act on
8972 * This routine is an iterator routine for retrieving the fields in a class.
8974 * You must pass a gpointer that points to zero and is treated as an opaque handle to
8975 * iterate over all of the elements. When no more values are
8976 * available, the return value is NULL.
8978 * Returns: a MonoMethod on each iteration or NULL when no more methods are available.
8981 mono_class_get_methods (MonoClass* klass, gpointer *iter)
8983 MonoMethod** method;
8987 mono_class_setup_methods (klass);
8990 * We can't fail lookup of methods otherwise the runtime will burst in flames on all sort of places.
8991 * FIXME we should better report this error to the caller
8993 if (!klass->methods)
8995 /* start from the first */
8996 if (mono_class_get_method_count (klass)) {
8997 *iter = &klass->methods [0];
8998 return klass->methods [0];
9004 method = (MonoMethod **)*iter;
9006 if (method < &klass->methods [mono_class_get_method_count (klass)]) {
9014 * mono_class_get_virtual_methods:
9016 * Iterate over the virtual methods of KLASS.
9018 * LOCKING: Assumes the loader lock is held (because of the klass->methods check).
9021 mono_class_get_virtual_methods (MonoClass* klass, gpointer *iter)
9023 MonoMethod** method;
9026 if (klass->methods || !MONO_CLASS_HAS_STATIC_METADATA (klass)) {
9028 mono_class_setup_methods (klass);
9030 * We can't fail lookup of methods otherwise the runtime will burst in flames on all sort of places.
9031 * FIXME we should better report this error to the caller
9033 if (!klass->methods)
9035 /* start from the first */
9036 method = &klass->methods [0];
9038 method = (MonoMethod **)*iter;
9041 int mcount = mono_class_get_method_count (klass);
9042 while (method < &klass->methods [mcount]) {
9043 if (*method && ((*method)->flags & METHOD_ATTRIBUTE_VIRTUAL))
9047 if (method < &klass->methods [mcount]) {
9054 /* Search directly in metadata to avoid calling setup_methods () */
9055 MonoMethod *res = NULL;
9061 start_index = GPOINTER_TO_UINT (*iter);
9064 int first_idx = mono_class_get_first_method_idx (klass);
9065 int mcount = mono_class_get_method_count (klass);
9066 for (i = start_index; i < mcount; ++i) {
9069 /* first_idx points into the methodptr table */
9070 flags = mono_metadata_decode_table_row_col (klass->image, MONO_TABLE_METHOD, first_idx + i, MONO_METHOD_FLAGS);
9072 if (flags & METHOD_ATTRIBUTE_VIRTUAL)
9078 res = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | (first_idx + i + 1), klass, NULL, &error);
9079 mono_error_cleanup (&error); /* FIXME don't swallow the error */
9081 /* Add 1 here so the if (*iter) check fails */
9082 *iter = GUINT_TO_POINTER (i + 1);
9091 * mono_class_get_properties:
9092 * @klass: the MonoClass to act on
9094 * This routine is an iterator routine for retrieving the properties in a class.
9096 * You must pass a gpointer that points to zero and is treated as an opaque handle to
9097 * iterate over all of the elements. When no more values are
9098 * available, the return value is NULL.
9100 * Returns: a @MonoProperty* on each invocation, or NULL when no more are available.
9103 mono_class_get_properties (MonoClass* klass, gpointer *iter)
9105 MonoProperty* property;
9109 mono_class_setup_properties (klass);
9110 MonoClassPropertyInfo *info = mono_class_get_property_info (klass);
9111 /* start from the first */
9113 *iter = &info->properties [0];
9114 return (MonoProperty *)*iter;
9120 property = (MonoProperty *)*iter;
9122 MonoClassPropertyInfo *info = mono_class_get_property_info (klass);
9123 if (property < &info->properties [info->count]) {
9125 return (MonoProperty *)*iter;
9131 * mono_class_get_events:
9132 * @klass: the MonoClass to act on
9134 * This routine is an iterator routine for retrieving the properties in a class.
9136 * You must pass a gpointer that points to zero and is treated as an opaque handle to
9137 * iterate over all of the elements. When no more values are
9138 * available, the return value is NULL.
9140 * Returns: a @MonoEvent* on each invocation, or NULL when no more are available.
9143 mono_class_get_events (MonoClass* klass, gpointer *iter)
9149 mono_class_setup_events (klass);
9150 MonoClassEventInfo *info = mono_class_get_event_info (klass);
9151 /* start from the first */
9153 *iter = &info->events [0];
9154 return (MonoEvent *)*iter;
9160 event = (MonoEvent *)*iter;
9162 MonoClassEventInfo *info = mono_class_get_event_info (klass);
9163 if (event < &info->events [info->count]) {
9165 return (MonoEvent *)*iter;
9171 * mono_class_get_interfaces
9172 * @klass: the MonoClass to act on
9174 * This routine is an iterator routine for retrieving the interfaces implemented by this class.
9176 * You must pass a gpointer that points to zero and is treated as an opaque handle to
9177 * iterate over all of the elements. When no more values are
9178 * available, the return value is NULL.
9180 * Returns: a @Monoclass* on each invocation, or NULL when no more are available.
9183 mono_class_get_interfaces (MonoClass* klass, gpointer *iter)
9191 mono_class_init (klass);
9192 if (!klass->interfaces_inited) {
9193 mono_class_setup_interfaces (klass, &error);
9194 if (!mono_error_ok (&error)) {
9195 mono_error_cleanup (&error);
9199 /* start from the first */
9200 if (klass->interface_count) {
9201 *iter = &klass->interfaces [0];
9202 return klass->interfaces [0];
9208 iface = (MonoClass **)*iter;
9210 if (iface < &klass->interfaces [klass->interface_count]) {
9218 setup_nested_types (MonoClass *klass)
9221 GList *classes, *nested_classes, *l;
9224 if (klass->nested_classes_inited)
9227 if (!klass->type_token) {
9228 mono_loader_lock ();
9229 klass->nested_classes_inited = TRUE;
9230 mono_loader_unlock ();
9234 i = mono_metadata_nesting_typedef (klass->image, klass->type_token, 1);
9238 guint32 cols [MONO_NESTED_CLASS_SIZE];
9239 mono_metadata_decode_row (&klass->image->tables [MONO_TABLE_NESTEDCLASS], i - 1, cols, MONO_NESTED_CLASS_SIZE);
9240 nclass = mono_class_create_from_typedef (klass->image, MONO_TOKEN_TYPE_DEF | cols [MONO_NESTED_CLASS_NESTED], &error);
9241 if (!mono_error_ok (&error)) {
9242 /*FIXME don't swallow the error message*/
9243 mono_error_cleanup (&error);
9245 i = mono_metadata_nesting_typedef (klass->image, klass->type_token, i + 1);
9249 classes = g_list_prepend (classes, nclass);
9251 i = mono_metadata_nesting_typedef (klass->image, klass->type_token, i + 1);
9254 nested_classes = NULL;
9255 for (l = classes; l; l = l->next)
9256 nested_classes = g_list_prepend_image (klass->image, nested_classes, l->data);
9257 g_list_free (classes);
9259 mono_loader_lock ();
9260 if (!klass->nested_classes_inited) {
9261 mono_class_set_nested_classes_property (klass, nested_classes);
9262 mono_memory_barrier ();
9263 klass->nested_classes_inited = TRUE;
9265 mono_loader_unlock ();
9269 * mono_class_get_nested_types
9270 * @klass: the MonoClass to act on
9272 * This routine is an iterator routine for retrieving the nested types of a class.
9273 * This works only if @klass is non-generic, or a generic type definition.
9275 * You must pass a gpointer that points to zero and is treated as an opaque handle to
9276 * iterate over all of the elements. When no more values are
9277 * available, the return value is NULL.
9279 * Returns: a @Monoclass* on each invocation, or NULL when no more are available.
9282 mono_class_get_nested_types (MonoClass* klass, gpointer *iter)
9288 if (!klass->nested_classes_inited)
9289 setup_nested_types (klass);
9292 GList *nested_classes = mono_class_get_nested_classes_property (klass);
9293 /* start from the first */
9294 if (nested_classes) {
9295 *iter = nested_classes;
9296 return (MonoClass *)nested_classes->data;
9298 /* no nested types */
9302 item = (GList *)*iter;
9306 return (MonoClass *)item->data;
9313 * mono_class_is_delegate
9314 * @klass: the MonoClass to act on
9316 * Returns: TRUE if the MonoClass represents a System.Delegate.
9319 mono_class_is_delegate (MonoClass *klass)
9321 return klass->delegate;
9325 * mono_class_implements_interface
9326 * @klass: The MonoClass to act on
9327 * @interface: The interface to check if @klass implements.
9329 * Returns: TRUE if @klass implements @interface.
9332 mono_class_implements_interface (MonoClass* klass, MonoClass* iface)
9334 return mono_class_is_assignable_from (iface, klass);
9338 * mono_field_get_name:
9339 * @field: the MonoClassField to act on
9341 * Returns: The name of the field.
9344 mono_field_get_name (MonoClassField *field)
9350 * mono_field_get_type:
9351 * @field: the MonoClassField to act on
9353 * Returns: MonoType of the field.
9356 mono_field_get_type (MonoClassField *field)
9359 MonoType *type = mono_field_get_type_checked (field, &error);
9360 if (!mono_error_ok (&error)) {
9361 mono_trace_warning (MONO_TRACE_TYPE, "Could not load field's type due to %s", mono_error_get_message (&error));
9362 mono_error_cleanup (&error);
9369 * mono_field_get_type_checked:
9370 * @field: the MonoClassField to act on
9371 * @error: used to return any erro found while retrieving @field type
9373 * Returns: MonoType of the field.
9376 mono_field_get_type_checked (MonoClassField *field, MonoError *error)
9378 mono_error_init (error);
9380 mono_field_resolve_type (field, error);
9385 * mono_field_get_parent:
9386 * @field: the MonoClassField to act on
9388 * Returns: MonoClass where the field was defined.
9391 mono_field_get_parent (MonoClassField *field)
9393 return field->parent;
9397 * mono_field_get_flags;
9398 * @field: the MonoClassField to act on
9400 * The metadata flags for a field are encoded using the
9401 * FIELD_ATTRIBUTE_* constants. See the tabledefs.h file for details.
9403 * Returns: The flags for the field.
9406 mono_field_get_flags (MonoClassField *field)
9409 return mono_field_resolve_flags (field);
9410 return field->type->attrs;
9414 * mono_field_get_offset:
9415 * @field: the MonoClassField to act on
9417 * Returns: The field offset.
9420 mono_field_get_offset (MonoClassField *field)
9422 return field->offset;
9426 mono_field_get_rva (MonoClassField *field)
9430 MonoClass *klass = field->parent;
9431 MonoFieldDefaultValue *def_values;
9433 g_assert (field->type->attrs & FIELD_ATTRIBUTE_HAS_FIELD_RVA);
9435 def_values = mono_class_get_field_def_values (klass);
9437 def_values = (MonoFieldDefaultValue *)mono_class_alloc0 (klass, sizeof (MonoFieldDefaultValue) * mono_class_get_field_count (klass));
9439 mono_class_set_field_def_values (klass, def_values);
9442 field_index = mono_field_get_index (field);
9444 if (!def_values [field_index].data && !image_is_dynamic (klass->image)) {
9445 int first_field_idx = mono_class_get_first_field_idx (klass);
9446 mono_metadata_field_info (field->parent->image, first_field_idx + field_index, NULL, &rva, NULL);
9448 g_warning ("field %s in %s should have RVA data, but hasn't", mono_field_get_name (field), field->parent->name);
9449 def_values [field_index].data = mono_image_rva_map (field->parent->image, rva);
9452 return def_values [field_index].data;
9456 * mono_field_get_data:
9457 * @field: the MonoClassField to act on
9459 * Returns: A pointer to the metadata constant value or to the field
9460 * data if it has an RVA flag.
9463 mono_field_get_data (MonoClassField *field)
9465 if (field->type->attrs & FIELD_ATTRIBUTE_HAS_DEFAULT) {
9466 MonoTypeEnum def_type;
9468 return mono_class_get_field_default_value (field, &def_type);
9469 } else if (field->type->attrs & FIELD_ATTRIBUTE_HAS_FIELD_RVA) {
9470 return mono_field_get_rva (field);
9477 * mono_property_get_name:
9478 * @prop: the MonoProperty to act on
9480 * Returns: The name of the property
9483 mono_property_get_name (MonoProperty *prop)
9489 * mono_property_get_set_method
9490 * @prop: the MonoProperty to act on.
9492 * Returns: The setter method of the property (A MonoMethod)
9495 mono_property_get_set_method (MonoProperty *prop)
9501 * mono_property_get_get_method
9502 * @prop: the MonoProperty to act on.
9504 * Returns: The setter method of the property (A MonoMethod)
9507 mono_property_get_get_method (MonoProperty *prop)
9513 * mono_property_get_parent:
9514 * @prop: the MonoProperty to act on.
9516 * Returns: The MonoClass where the property was defined.
9519 mono_property_get_parent (MonoProperty *prop)
9521 return prop->parent;
9525 * mono_property_get_flags:
9526 * @prop: the MonoProperty to act on.
9528 * The metadata flags for a property are encoded using the
9529 * PROPERTY_ATTRIBUTE_* constants. See the tabledefs.h file for details.
9531 * Returns: The flags for the property.
9534 mono_property_get_flags (MonoProperty *prop)
9540 * mono_event_get_name:
9541 * @event: the MonoEvent to act on
9543 * Returns: The name of the event.
9546 mono_event_get_name (MonoEvent *event)
9552 * mono_event_get_add_method:
9553 * @event: The MonoEvent to act on.
9555 * Returns: The @add' method for the event (a MonoMethod).
9558 mono_event_get_add_method (MonoEvent *event)
9564 * mono_event_get_remove_method:
9565 * @event: The MonoEvent to act on.
9567 * Returns: The @remove method for the event (a MonoMethod).
9570 mono_event_get_remove_method (MonoEvent *event)
9572 return event->remove;
9576 * mono_event_get_raise_method:
9577 * @event: The MonoEvent to act on.
9579 * Returns: The @raise method for the event (a MonoMethod).
9582 mono_event_get_raise_method (MonoEvent *event)
9584 return event->raise;
9588 * mono_event_get_parent:
9589 * @event: the MonoEvent to act on.
9591 * Returns: The MonoClass where the event is defined.
9594 mono_event_get_parent (MonoEvent *event)
9596 return event->parent;
9600 * mono_event_get_flags
9601 * @event: the MonoEvent to act on.
9603 * The metadata flags for an event are encoded using the
9604 * EVENT_* constants. See the tabledefs.h file for details.
9606 * Returns: The flags for the event.
9609 mono_event_get_flags (MonoEvent *event)
9611 return event->attrs;
9615 * mono_class_get_method_from_name:
9616 * @klass: where to look for the method
9617 * @name: name of the method
9618 * @param_count: number of parameters. -1 for any number.
9620 * Obtains a MonoMethod with a given name and number of parameters.
9621 * It only works if there are no multiple signatures for any given method name.
9624 mono_class_get_method_from_name (MonoClass *klass, const char *name, int param_count)
9626 return mono_class_get_method_from_name_flags (klass, name, param_count, 0);
9630 find_method_in_metadata (MonoClass *klass, const char *name, int param_count, int flags)
9632 MonoMethod *res = NULL;
9635 /* Search directly in the metadata to avoid calling setup_methods () */
9636 int first_idx = mono_class_get_first_method_idx (klass);
9637 int mcount = mono_class_get_method_count (klass);
9638 for (i = 0; i < mcount; ++i) {
9640 guint32 cols [MONO_METHOD_SIZE];
9642 MonoMethodSignature *sig;
9644 /* first_idx points into the methodptr table */
9645 mono_metadata_decode_table_row (klass->image, MONO_TABLE_METHOD, first_idx + i, cols, MONO_METHOD_SIZE);
9647 if (!strcmp (mono_metadata_string_heap (klass->image, cols [MONO_METHOD_NAME]), name)) {
9648 method = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | (first_idx + i + 1), klass, NULL, &error);
9650 mono_error_cleanup (&error); /* FIXME don't swallow the error */
9653 if (param_count == -1) {
9657 sig = mono_method_signature_checked (method, &error);
9659 mono_error_cleanup (&error); /* FIXME don't swallow the error */
9662 if (sig->param_count == param_count) {
9673 * mono_class_get_method_from_name_flags:
9674 * @klass: where to look for the method
9675 * @name_space: name of the method
9676 * @param_count: number of parameters. -1 for any number.
9677 * @flags: flags which must be set in the method
9679 * Obtains a MonoMethod with a given name and number of parameters.
9680 * It only works if there are no multiple signatures for any given method name.
9683 mono_class_get_method_from_name_flags (MonoClass *klass, const char *name, int param_count, int flags)
9685 MonoMethod *res = NULL;
9688 mono_class_init (klass);
9690 if (mono_class_is_ginst (klass) && !klass->methods) {
9691 res = mono_class_get_method_from_name_flags (mono_class_get_generic_class (klass)->container_class, name, param_count, flags);
9694 res = mono_class_inflate_generic_method_full_checked (res, klass, mono_class_get_context (klass), &error);
9695 if (!mono_error_ok (&error))
9696 mono_error_cleanup (&error); /*FIXME don't swallow the error */
9701 if (klass->methods || !MONO_CLASS_HAS_STATIC_METADATA (klass)) {
9702 mono_class_setup_methods (klass);
9704 We can't fail lookup of methods otherwise the runtime will burst in flames on all sort of places.
9705 See mono/tests/array_load_exception.il
9706 FIXME we should better report this error to the caller
9708 if (!klass->methods)
9710 int mcount = mono_class_get_method_count (klass);
9711 for (i = 0; i < mcount; ++i) {
9712 MonoMethod *method = klass->methods [i];
9714 if (method->name[0] == name [0] &&
9715 !strcmp (name, method->name) &&
9716 (param_count == -1 || mono_method_signature (method)->param_count == param_count) &&
9717 ((method->flags & flags) == flags)) {
9724 res = find_method_in_metadata (klass, name, param_count, flags);
9731 * mono_class_set_failure:
9732 * @klass: class in which the failure was detected
9733 * @ex_type: the kind of exception/error to be thrown (later)
9734 * @ex_data: exception data (specific to each type of exception/error)
9736 * Keep a detected failure informations in the class for later processing.
9737 * Note that only the first failure is kept.
9739 * LOCKING: Acquires the loader lock.
9742 mono_class_set_failure (MonoClass *klass, MonoErrorBoxed *boxed_error)
9744 g_assert (boxed_error != NULL);
9746 if (mono_class_has_failure (klass))
9749 mono_loader_lock ();
9750 klass->has_failure = 1;
9751 mono_class_set_exception_data (klass, boxed_error);
9752 mono_loader_unlock ();
9758 mono_class_has_failure (const MonoClass *klass)
9760 g_assert (klass != NULL);
9761 return klass->has_failure != 0;
9766 * mono_class_set_type_load_failure:
9767 * @klass: class in which the failure was detected
9768 * @fmt: Printf-style error message string.
9770 * Collect detected failure informaion in the class for later processing.
9771 * The error is stored as a MonoErrorBoxed as with mono_error_set_type_load_class ()
9772 * Note that only the first failure is kept.
9774 * Returns FALSE if a failure was already set on the class, or TRUE otherwise.
9776 * LOCKING: Acquires the loader lock.
9779 mono_class_set_type_load_failure (MonoClass *klass, const char * fmt, ...)
9781 MonoError prepare_error;
9784 if (mono_class_has_failure (klass))
9787 mono_error_init (&prepare_error);
9789 va_start (args, fmt);
9790 mono_error_vset_type_load_class (&prepare_error, klass, fmt, args);
9793 MonoErrorBoxed *box = mono_error_box (&prepare_error, klass->image);
9794 mono_error_cleanup (&prepare_error);
9795 return mono_class_set_failure (klass, box);
9799 * mono_classes_init:
9801 * Initialize the resources used by this module.
9804 mono_classes_init (void)
9806 mono_os_mutex_init (&classes_mutex);
9808 mono_native_tls_alloc (&setup_fields_tls_id, NULL);
9809 mono_native_tls_alloc (&init_pending_tls_id, NULL);
9811 mono_counters_register ("MonoClassDef count",
9812 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &class_def_count);
9813 mono_counters_register ("MonoClassGtd count",
9814 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &class_gtd_count);
9815 mono_counters_register ("MonoClassGenericInst count",
9816 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &class_ginst_count);
9817 mono_counters_register ("MonoClassGenericParam count",
9818 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &class_gparam_count);
9819 mono_counters_register ("MonoClassArray count",
9820 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &class_array_count);
9821 mono_counters_register ("MonoClassPointer count",
9822 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &class_pointer_count);
9823 mono_counters_register ("Inflated methods size",
9824 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_methods_size);
9825 mono_counters_register ("Inflated classes size",
9826 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_classes_size);
9827 mono_counters_register ("MonoClass size",
9828 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &classes_size);
9832 * mono_classes_cleanup:
9834 * Free the resources used by this module.
9837 mono_classes_cleanup (void)
9839 mono_native_tls_free (setup_fields_tls_id);
9840 mono_native_tls_free (init_pending_tls_id);
9842 if (global_interface_bitset)
9843 mono_bitset_free (global_interface_bitset);
9844 global_interface_bitset = NULL;
9845 mono_os_mutex_destroy (&classes_mutex);
9849 * mono_class_get_exception_for_failure:
9850 * @klass: class in which the failure was detected
9852 * Return a constructed MonoException than the caller can then throw
9853 * using mono_raise_exception - or NULL if no failure is present (or
9854 * doesn't result in an exception).
9857 mono_class_get_exception_for_failure (MonoClass *klass)
9859 if (!mono_class_has_failure (klass))
9861 MonoError unboxed_error;
9862 mono_error_init (&unboxed_error);
9863 mono_error_set_for_class_failure (&unboxed_error, klass);
9864 return mono_error_convert_to_exception (&unboxed_error);
9868 is_nesting_type (MonoClass *outer_klass, MonoClass *inner_klass)
9870 outer_klass = mono_class_get_generic_type_definition (outer_klass);
9871 inner_klass = mono_class_get_generic_type_definition (inner_klass);
9873 if (outer_klass == inner_klass)
9875 inner_klass = inner_klass->nested_in;
9876 } while (inner_klass);
9881 mono_class_get_generic_type_definition (MonoClass *klass)
9883 MonoGenericClass *gklass = mono_class_try_get_generic_class (klass);
9884 return gklass ? gklass->container_class : klass;
9888 * Check if @klass is a subtype of @parent ignoring generic instantiations.
9890 * Generic instantiations are ignored for all super types of @klass.
9892 * Visibility checks ignoring generic instantiations.
9895 mono_class_has_parent_and_ignore_generics (MonoClass *klass, MonoClass *parent)
9898 klass = mono_class_get_generic_type_definition (klass);
9899 parent = mono_class_get_generic_type_definition (parent);
9900 mono_class_setup_supertypes (klass);
9902 for (i = 0; i < klass->idepth; ++i) {
9903 if (parent == mono_class_get_generic_type_definition (klass->supertypes [i]))
9909 * Subtype can only access parent members with family protection if the site object
9910 * is subclass of Subtype. For example:
9911 * class A { protected int x; }
9913 * void valid_access () {
9917 * void invalid_access () {
9924 is_valid_family_access (MonoClass *access_klass, MonoClass *member_klass, MonoClass *context_klass)
9926 if (!mono_class_has_parent_and_ignore_generics (access_klass, member_klass))
9929 if (context_klass == NULL)
9931 /*if access_klass is not member_klass context_klass must be type compat*/
9932 if (access_klass != member_klass && !mono_class_has_parent_and_ignore_generics (context_klass, access_klass))
9938 can_access_internals (MonoAssembly *accessing, MonoAssembly* accessed)
9941 if (accessing == accessed)
9943 if (!accessed || !accessing)
9946 /* extra safety under CoreCLR - the runtime does not verify the strongname signatures
9947 * anywhere so untrusted friends are not safe to access platform's code internals */
9948 if (mono_security_core_clr_enabled ()) {
9949 if (!mono_security_core_clr_can_access_internals (accessing->image, accessed->image))
9953 mono_assembly_load_friends (accessed);
9954 for (tmp = accessed->friend_assembly_names; tmp; tmp = tmp->next) {
9955 MonoAssemblyName *friend_ = (MonoAssemblyName *)tmp->data;
9956 /* Be conservative with checks */
9959 if (strcmp (accessing->aname.name, friend_->name))
9961 if (friend_->public_key_token [0]) {
9962 if (!accessing->aname.public_key_token [0])
9964 if (!mono_public_tokens_are_equal (friend_->public_key_token, accessing->aname.public_key_token))
9973 * If klass is a generic type or if it is derived from a generic type, return the
9974 * MonoClass of the generic definition
9975 * Returns NULL if not found
9978 get_generic_definition_class (MonoClass *klass)
9981 MonoGenericClass *gklass = mono_class_try_get_generic_class (klass);
9982 if (gklass && gklass->container_class)
9983 return gklass->container_class;
9984 klass = klass->parent;
9990 can_access_instantiation (MonoClass *access_klass, MonoGenericInst *ginst)
9993 for (i = 0; i < ginst->type_argc; ++i) {
9994 MonoType *type = ginst->type_argv[i];
9995 switch (type->type) {
9996 case MONO_TYPE_SZARRAY:
9997 if (!can_access_type (access_klass, type->data.klass))
10000 case MONO_TYPE_ARRAY:
10001 if (!can_access_type (access_klass, type->data.array->eklass))
10004 case MONO_TYPE_PTR:
10005 if (!can_access_type (access_klass, mono_class_from_mono_type (type->data.type)))
10008 case MONO_TYPE_CLASS:
10009 case MONO_TYPE_VALUETYPE:
10010 case MONO_TYPE_GENERICINST:
10011 if (!can_access_type (access_klass, mono_class_from_mono_type (type)))
10021 can_access_type (MonoClass *access_klass, MonoClass *member_klass)
10025 if (access_klass == member_klass)
10028 if (access_klass->image->assembly && access_klass->image->assembly->corlib_internal)
10031 if (access_klass->element_class && !access_klass->enumtype)
10032 access_klass = access_klass->element_class;
10034 if (member_klass->element_class && !member_klass->enumtype)
10035 member_klass = member_klass->element_class;
10037 access_level = mono_class_get_flags (member_klass) & TYPE_ATTRIBUTE_VISIBILITY_MASK;
10039 if (member_klass->byval_arg.type == MONO_TYPE_VAR || member_klass->byval_arg.type == MONO_TYPE_MVAR)
10042 if (mono_class_is_ginst (member_klass) && !can_access_instantiation (access_klass, mono_class_get_generic_class (member_klass)->context.class_inst))
10045 if (is_nesting_type (access_klass, member_klass) || (access_klass->nested_in && is_nesting_type (access_klass->nested_in, member_klass)))
10048 if (member_klass->nested_in && !can_access_type (access_klass, member_klass->nested_in))
10051 /*Non nested type with nested visibility. We just fail it.*/
10052 if (access_level >= TYPE_ATTRIBUTE_NESTED_PRIVATE && access_level <= TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM && member_klass->nested_in == NULL)
10055 switch (access_level) {
10056 case TYPE_ATTRIBUTE_NOT_PUBLIC:
10057 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
10059 case TYPE_ATTRIBUTE_PUBLIC:
10062 case TYPE_ATTRIBUTE_NESTED_PUBLIC:
10065 case TYPE_ATTRIBUTE_NESTED_PRIVATE:
10066 return is_nesting_type (member_klass, access_klass);
10068 case TYPE_ATTRIBUTE_NESTED_FAMILY:
10069 return mono_class_has_parent_and_ignore_generics (access_klass, member_klass->nested_in);
10071 case TYPE_ATTRIBUTE_NESTED_ASSEMBLY:
10072 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
10074 case TYPE_ATTRIBUTE_NESTED_FAM_AND_ASSEM:
10075 return can_access_internals (access_klass->image->assembly, member_klass->nested_in->image->assembly) &&
10076 mono_class_has_parent_and_ignore_generics (access_klass, member_klass->nested_in);
10078 case TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM:
10079 return can_access_internals (access_klass->image->assembly, member_klass->nested_in->image->assembly) ||
10080 mono_class_has_parent_and_ignore_generics (access_klass, member_klass->nested_in);
10085 /* FIXME: check visibility of type, too */
10087 can_access_member (MonoClass *access_klass, MonoClass *member_klass, MonoClass* context_klass, int access_level)
10089 MonoClass *member_generic_def;
10090 if (access_klass->image->assembly && access_klass->image->assembly->corlib_internal)
10093 MonoGenericClass *access_gklass = mono_class_try_get_generic_class (access_klass);
10094 if (((access_gklass && access_gklass->container_class) ||
10095 mono_class_is_gtd (access_klass)) &&
10096 (member_generic_def = get_generic_definition_class (member_klass))) {
10097 MonoClass *access_container;
10099 if (mono_class_is_gtd (access_klass))
10100 access_container = access_klass;
10102 access_container = access_gklass->container_class;
10104 if (can_access_member (access_container, member_generic_def, context_klass, access_level))
10108 /* Partition I 8.5.3.2 */
10109 /* the access level values are the same for fields and methods */
10110 switch (access_level) {
10111 case FIELD_ATTRIBUTE_COMPILER_CONTROLLED:
10112 /* same compilation unit */
10113 return access_klass->image == member_klass->image;
10114 case FIELD_ATTRIBUTE_PRIVATE:
10115 return access_klass == member_klass;
10116 case FIELD_ATTRIBUTE_FAM_AND_ASSEM:
10117 if (is_valid_family_access (access_klass, member_klass, context_klass) &&
10118 can_access_internals (access_klass->image->assembly, member_klass->image->assembly))
10121 case FIELD_ATTRIBUTE_ASSEMBLY:
10122 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
10123 case FIELD_ATTRIBUTE_FAMILY:
10124 if (is_valid_family_access (access_klass, member_klass, context_klass))
10127 case FIELD_ATTRIBUTE_FAM_OR_ASSEM:
10128 if (is_valid_family_access (access_klass, member_klass, context_klass))
10130 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
10131 case FIELD_ATTRIBUTE_PUBLIC:
10138 * mono_method_can_access_field:
10139 * @method: Method that will attempt to access the field
10140 * @field: the field to access
10142 * Used to determine if a method is allowed to access the specified field.
10144 * Returns: TRUE if the given @method is allowed to access the @field while following
10145 * the accessibility rules of the CLI.
10148 mono_method_can_access_field (MonoMethod *method, MonoClassField *field)
10150 /* FIXME: check all overlapping fields */
10151 int can = can_access_member (method->klass, field->parent, NULL, mono_field_get_type (field)->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
10153 MonoClass *nested = method->klass->nested_in;
10155 can = can_access_member (nested, field->parent, NULL, mono_field_get_type (field)->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
10158 nested = nested->nested_in;
10165 * mono_method_can_access_method:
10166 * @method: Method that will attempt to access the other method
10167 * @called: the method that we want to probe for accessibility.
10169 * Used to determine if the @method is allowed to access the specified @called method.
10171 * Returns: TRUE if the given @method is allowed to invoke the @called while following
10172 * the accessibility rules of the CLI.
10175 mono_method_can_access_method (MonoMethod *method, MonoMethod *called)
10177 method = mono_method_get_method_definition (method);
10178 called = mono_method_get_method_definition (called);
10179 return mono_method_can_access_method_full (method, called, NULL);
10183 * mono_method_can_access_method_full:
10184 * @method: The caller method
10185 * @called: The called method
10186 * @context_klass: The static type on stack of the owner @called object used
10188 * This function must be used with instance calls, as they have more strict family accessibility.
10189 * It can be used with static methods, but context_klass should be NULL.
10191 * Returns: TRUE if caller have proper visibility and acessibility to @called
10194 mono_method_can_access_method_full (MonoMethod *method, MonoMethod *called, MonoClass *context_klass)
10196 /* Wrappers are except from access checks */
10197 if (method->wrapper_type != MONO_WRAPPER_NONE || called->wrapper_type != MONO_WRAPPER_NONE)
10200 MonoClass *access_class = method->klass;
10201 MonoClass *member_class = called->klass;
10202 int can = can_access_member (access_class, member_class, context_klass, called->flags & METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK);
10204 MonoClass *nested = access_class->nested_in;
10206 can = can_access_member (nested, member_class, context_klass, called->flags & METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK);
10209 nested = nested->nested_in;
10216 can = can_access_type (access_class, member_class);
10218 MonoClass *nested = access_class->nested_in;
10220 can = can_access_type (nested, member_class);
10223 nested = nested->nested_in;
10230 if (called->is_inflated) {
10231 MonoMethodInflated * infl = (MonoMethodInflated*)called;
10232 if (infl->context.method_inst && !can_access_instantiation (access_class, infl->context.method_inst))
10241 * mono_method_can_access_field_full:
10242 * @method: The caller method
10243 * @field: The accessed field
10244 * @context_klass: The static type on stack of the owner @field object used
10246 * This function must be used with instance fields, as they have more strict family accessibility.
10247 * It can be used with static fields, but context_klass should be NULL.
10249 * Returns: TRUE if caller have proper visibility and acessibility to @field
10252 mono_method_can_access_field_full (MonoMethod *method, MonoClassField *field, MonoClass *context_klass)
10254 MonoClass *access_class = method->klass;
10255 MonoClass *member_class = field->parent;
10256 /* FIXME: check all overlapping fields */
10257 int can = can_access_member (access_class, member_class, context_klass, field->type->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
10259 MonoClass *nested = access_class->nested_in;
10261 can = can_access_member (nested, member_class, context_klass, field->type->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
10264 nested = nested->nested_in;
10271 can = can_access_type (access_class, member_class);
10273 MonoClass *nested = access_class->nested_in;
10275 can = can_access_type (nested, member_class);
10278 nested = nested->nested_in;
10288 * mono_class_can_access_class:
10289 * @source_class: The source class
10290 * @target_class: The accessed class
10292 * This function returns is @target_class is visible to @source_class
10294 * Returns: TRUE if source have proper visibility and acessibility to target
10297 mono_class_can_access_class (MonoClass *source_class, MonoClass *target_class)
10299 return can_access_type (source_class, target_class);
10303 * mono_type_is_valid_enum_basetype:
10304 * @type: The MonoType to check
10306 * Returns: TRUE if the type can be used as the basetype of an enum
10308 gboolean mono_type_is_valid_enum_basetype (MonoType * type) {
10309 switch (type->type) {
10312 case MONO_TYPE_BOOLEAN:
10315 case MONO_TYPE_CHAR:
10329 * mono_class_is_valid_enum:
10330 * @klass: An enum class to be validated
10332 * This method verify the required properties an enum should have.
10334 * Returns: TRUE if the informed enum class is valid
10336 * FIXME: TypeBuilder enums are allowed to implement interfaces, but since they cannot have methods, only empty interfaces are possible
10337 * FIXME: enum types are not allowed to have a cctor, but mono_reflection_create_runtime_class sets has_cctor to 1 for all types
10338 * FIXME: TypeBuilder enums can have any kind of static fields, but the spec is very explicit about that (P II 14.3)
10341 mono_class_is_valid_enum (MonoClass *klass)
10343 MonoClassField * field;
10344 gpointer iter = NULL;
10345 gboolean found_base_field = FALSE;
10347 g_assert (klass->enumtype);
10348 /* we cannot test against mono_defaults.enum_class, or mcs won't be able to compile the System namespace*/
10349 if (!klass->parent || strcmp (klass->parent->name, "Enum") || strcmp (klass->parent->name_space, "System") ) {
10353 if (!mono_class_is_auto_layout (klass))
10356 while ((field = mono_class_get_fields (klass, &iter))) {
10357 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
10358 if (found_base_field)
10360 found_base_field = TRUE;
10361 if (!mono_type_is_valid_enum_basetype (field->type))
10366 if (!found_base_field)
10369 if (mono_class_get_method_count (klass) > 0)
10376 mono_generic_class_is_generic_type_definition (MonoGenericClass *gklass)
10378 return gklass->context.class_inst == mono_class_get_generic_container (gklass->container_class)->context.class_inst;
10382 * mono_class_setup_interface_id:
10384 * Initializes MonoClass::interface_id if required.
10386 * LOCKING: Acquires the loader lock.
10389 mono_class_setup_interface_id (MonoClass *klass)
10391 mono_loader_lock ();
10392 if (MONO_CLASS_IS_INTERFACE (klass) && !klass->interface_id)
10393 klass->interface_id = mono_get_unique_iid (klass);
10394 mono_loader_unlock ();
10398 * mono_class_setup_interfaces:
10400 * Initialize klass->interfaces/interfaces_count.
10401 * LOCKING: Acquires the loader lock.
10402 * This function can fail the type.
10405 mono_class_setup_interfaces (MonoClass *klass, MonoError *error)
10407 int i, interface_count;
10408 MonoClass **interfaces;
10410 mono_error_init (error);
10412 if (klass->interfaces_inited)
10415 if (klass->rank == 1 && klass->byval_arg.type != MONO_TYPE_ARRAY) {
10416 MonoType *args [1];
10418 /* generic IList, ICollection, IEnumerable */
10419 interface_count = 2;
10420 interfaces = (MonoClass **)mono_image_alloc0 (klass->image, sizeof (MonoClass*) * interface_count);
10422 args [0] = &klass->element_class->byval_arg;
10423 interfaces [0] = mono_class_bind_generic_parameters (
10424 mono_defaults.generic_ilist_class, 1, args, FALSE);
10425 interfaces [1] = mono_class_bind_generic_parameters (
10426 mono_defaults.generic_ireadonlylist_class, 1, args, FALSE);
10427 } else if (mono_class_is_ginst (klass)) {
10428 MonoClass *gklass = mono_class_get_generic_class (klass)->container_class;
10430 mono_class_setup_interfaces (gklass, error);
10431 if (!mono_error_ok (error)) {
10432 mono_class_set_type_load_failure (klass, "Could not setup the interfaces");
10436 interface_count = gklass->interface_count;
10437 interfaces = mono_class_new0 (klass, MonoClass *, interface_count);
10438 for (i = 0; i < interface_count; i++) {
10439 interfaces [i] = mono_class_inflate_generic_class_checked (gklass->interfaces [i], mono_generic_class_get_context (mono_class_get_generic_class (klass)), error);
10440 if (!mono_error_ok (error)) {
10441 mono_class_set_type_load_failure (klass, "Could not setup the interfaces");
10446 interface_count = 0;
10450 mono_loader_lock ();
10451 if (!klass->interfaces_inited) {
10452 klass->interface_count = interface_count;
10453 klass->interfaces = interfaces;
10455 mono_memory_barrier ();
10457 klass->interfaces_inited = TRUE;
10459 mono_loader_unlock ();
10463 mono_field_resolve_type (MonoClassField *field, MonoError *error)
10465 MonoClass *klass = field->parent;
10466 MonoImage *image = klass->image;
10467 MonoClass *gtd = mono_class_is_ginst (klass) ? mono_class_get_generic_type_definition (klass) : NULL;
10469 int field_idx = field - klass->fields;
10471 mono_error_init (error);
10474 MonoClassField *gfield = >d->fields [field_idx];
10475 MonoType *gtype = mono_field_get_type_checked (gfield, error);
10476 if (!mono_error_ok (error)) {
10477 char *full_name = mono_type_get_full_name (gtd);
10478 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));
10479 g_free (full_name);
10482 ftype = mono_class_inflate_generic_type_no_copy (image, gtype, mono_class_get_context (klass), error);
10483 if (!mono_error_ok (error)) {
10484 char *full_name = mono_type_get_full_name (klass);
10485 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));
10486 g_free (full_name);
10490 guint32 cols [MONO_FIELD_SIZE];
10491 MonoGenericContainer *container = NULL;
10492 int idx = mono_class_get_first_field_idx (klass) + field_idx;
10494 /*FIXME, in theory we do not lazy load SRE fields*/
10495 g_assert (!image_is_dynamic (image));
10497 if (mono_class_is_gtd (klass)) {
10498 container = mono_class_get_generic_container (klass);
10500 container = mono_class_get_generic_container (gtd);
10501 g_assert (container);
10504 /* first_field_idx and idx points into the fieldptr table */
10505 mono_metadata_decode_table_row (image, MONO_TABLE_FIELD, idx, cols, MONO_FIELD_SIZE);
10507 if (!mono_verifier_verify_field_signature (image, cols [MONO_FIELD_SIGNATURE], NULL)) {
10508 char *full_name = mono_type_get_full_name (klass);
10509 mono_error_set_type_load_class (error, klass, "Could not verify field '%s:%s' signature", full_name, field->name);;
10510 mono_class_set_type_load_failure (klass, "%s", mono_error_get_message (error));
10511 g_free (full_name);
10515 sig = mono_metadata_blob_heap (image, cols [MONO_FIELD_SIGNATURE]);
10517 mono_metadata_decode_value (sig, &sig);
10518 /* FIELD signature == 0x06 */
10519 g_assert (*sig == 0x06);
10521 ftype = mono_metadata_parse_type_checked (image, container, cols [MONO_FIELD_FLAGS], FALSE, sig + 1, &sig, error);
10523 char *full_name = mono_type_get_full_name (klass);
10524 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));
10525 g_free (full_name);
10528 mono_memory_barrier ();
10529 field->type = ftype;
10533 mono_field_resolve_flags (MonoClassField *field)
10535 MonoClass *klass = field->parent;
10536 MonoImage *image = klass->image;
10537 MonoClass *gtd = mono_class_is_ginst (klass) ? mono_class_get_generic_type_definition (klass) : NULL;
10538 int field_idx = field - klass->fields;
10541 MonoClassField *gfield = >d->fields [field_idx];
10542 return mono_field_get_flags (gfield);
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 return mono_metadata_decode_table_row_col (image, MONO_TABLE_FIELD, idx, MONO_FIELD_FLAGS);
10554 * mono_class_get_fields_lazy:
10555 * @klass: the MonoClass to act on
10557 * This routine is an iterator routine for retrieving the fields in a class.
10558 * Only minimal information about fields are loaded. Accessors must be used
10559 * for all MonoClassField returned.
10561 * You must pass a gpointer that points to zero and is treated as an opaque handle to
10562 * iterate over all of the elements. When no more values are
10563 * available, the return value is NULL.
10565 * Returns: a @MonoClassField* on each iteration, or NULL when no more fields are available.
10568 mono_class_get_fields_lazy (MonoClass* klass, gpointer *iter)
10570 MonoClassField* field;
10574 mono_class_setup_basic_field_info (klass);
10575 if (!klass->fields)
10577 /* start from the first */
10578 if (mono_class_get_field_count (klass)) {
10579 *iter = &klass->fields [0];
10580 return (MonoClassField *)*iter;
10586 field = (MonoClassField *)*iter;
10588 if (field < &klass->fields [mono_class_get_field_count (klass)]) {
10590 return (MonoClassField *)*iter;
10596 mono_class_full_name (MonoClass *klass)
10598 return mono_type_full_name (&klass->byval_arg);
10601 /* Declare all shared lazy type lookup functions */
10602 GENERATE_TRY_GET_CLASS_WITH_CACHE (safehandle, "System.Runtime.InteropServices", "SafeHandle")
10605 * mono_method_get_base_method:
10606 * @method: a method
10607 * @definition: if true, get the definition
10608 * @error: set on failure
10610 * Given a virtual method associated with a subclass, return the corresponding
10611 * method from an ancestor. If @definition is FALSE, returns the method in the
10612 * superclass of the given method. If @definition is TRUE, return the method
10613 * in the ancestor class where it was first declared. The type arguments will
10614 * be inflated in the ancestor classes. If the method is not associated with a
10615 * class, or isn't virtual, returns the method itself. On failure returns NULL
10619 mono_method_get_base_method (MonoMethod *method, gboolean definition, MonoError *error)
10621 MonoClass *klass, *parent;
10622 MonoGenericContext *generic_inst = NULL;
10623 MonoMethod *result = NULL;
10626 if (method->klass == NULL)
10629 if (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
10630 MONO_CLASS_IS_INTERFACE (method->klass) ||
10631 method->flags & METHOD_ATTRIBUTE_NEW_SLOT)
10634 slot = mono_method_get_vtable_slot (method);
10638 klass = method->klass;
10639 if (mono_class_is_ginst (klass)) {
10640 generic_inst = mono_class_get_context (klass);
10641 klass = mono_class_get_generic_class (klass)->container_class;
10646 /* At the end of the loop, klass points to the eldest class that has this virtual function slot. */
10647 for (parent = klass->parent; parent != NULL; parent = parent->parent) {
10648 /* on entry, klass is either a plain old non-generic class and generic_inst == NULL
10649 or klass is the generic container class and generic_inst is the instantiation.
10651 when we go to the parent, if the parent is an open constructed type, we need to
10652 replace the type parameters by the definitions from the generic_inst, and then take it
10653 apart again into the klass and the generic_inst.
10655 For cases like this:
10656 class C<T> : B<T, int> {
10657 public override void Foo () { ... }
10659 class B<U,V> : A<HashMap<U,V>> {
10660 public override void Foo () { ... }
10663 public virtual void Foo () { ... }
10666 if at each iteration the parent isn't open, we can skip inflating it. if at some
10667 iteration the parent isn't generic (after possible inflation), we set generic_inst to
10670 MonoGenericContext *parent_inst = NULL;
10671 if (mono_class_is_open_constructed_type (mono_class_get_type (parent))) {
10672 parent = mono_class_inflate_generic_class_checked (parent, generic_inst, error);
10673 return_val_if_nok (error, NULL);
10675 if (mono_class_is_ginst (parent)) {
10676 parent_inst = mono_class_get_context (parent);
10677 parent = mono_class_get_generic_class (parent)->container_class;
10680 mono_class_setup_vtable (parent);
10681 if (parent->vtable_size <= slot)
10684 generic_inst = parent_inst;
10687 klass = klass->parent;
10690 if (mono_class_is_open_constructed_type (mono_class_get_type (klass))) {
10691 klass = mono_class_inflate_generic_class_checked (klass, generic_inst, error);
10692 return_val_if_nok (error, NULL);
10694 generic_inst = NULL;
10696 if (mono_class_is_ginst (klass)) {
10697 generic_inst = mono_class_get_context (klass);
10698 klass = mono_class_get_generic_class (klass)->container_class;
10703 if (generic_inst) {
10704 klass = mono_class_inflate_generic_class_checked (klass, generic_inst, error);
10705 return_val_if_nok (error, NULL);
10708 if (klass == method->klass)
10711 /*This is possible if definition == FALSE.
10712 * Do it here to be really sure we don't read invalid memory.
10714 if (slot >= klass->vtable_size)
10717 mono_class_setup_vtable (klass);
10719 result = klass->vtable [slot];
10720 if (result == NULL) {
10721 /* It is an abstract method */
10722 gboolean found = FALSE;
10723 gpointer iter = NULL;
10724 while ((result = mono_class_get_methods (klass, &iter))) {
10725 if (result->slot == slot) {
10730 /* found might be FALSE if we looked in an abstract class
10731 * that doesn't override an abstract method of its
10733 * abstract class Base {
10734 * public abstract void Foo ();
10736 * abstract class Derived : Base { }
10737 * class Child : Derived {
10738 * public override void Foo () { }
10741 * if m was Child.Foo and we ask for the base method,
10742 * then we get here with klass == Derived and found == FALSE
10744 /* but it shouldn't be the case that if we're looking
10745 * for the definition and didn't find a result; the
10746 * loop above should've taken us as far as we could
10748 g_assert (!(definition && !found));
10753 g_assert (result != NULL);