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, inflated_classes_size, inflated_methods_size;
58 guint32 classes_size, class_ext_size;
60 /* Low level lock which protects data structures in this module */
61 static mono_mutex_t classes_mutex;
63 /* Function supplied by the runtime to find classes by name using information from the AOT file */
64 static MonoGetClassFromName get_class_from_name = NULL;
66 static MonoClass * mono_class_create_from_typedef (MonoImage *image, guint32 type_token, MonoError *error);
67 static gboolean mono_class_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res);
68 static gboolean can_access_type (MonoClass *access_klass, MonoClass *member_klass);
69 static MonoMethod* find_method_in_metadata (MonoClass *klass, const char *name, int param_count, int flags);
70 static int generic_array_methods (MonoClass *klass);
71 static void setup_generic_array_ifaces (MonoClass *klass, MonoClass *iface, MonoMethod **methods, int pos);
73 static MonoMethod* mono_class_get_virtual_methods (MonoClass* klass, gpointer *iter);
74 static char* mono_assembly_name_from_token (MonoImage *image, guint32 type_token);
75 static void mono_field_resolve_type (MonoClassField *field, MonoError *error);
76 static guint32 mono_field_resolve_flags (MonoClassField *field);
77 static void mono_class_setup_vtable_full (MonoClass *klass, GList *in_setup);
78 static void mono_generic_class_setup_parent (MonoClass *klass, MonoClass *gklass);
80 static gboolean mono_class_set_failure (MonoClass *klass, MonoErrorBoxed *boxed_error);
81 static gpointer mono_class_get_exception_data (const MonoClass *klass);
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;
117 mono_locks_os_acquire (&classes_mutex, ClassesLock);
121 classes_unlock (void)
123 mono_locks_os_release (&classes_mutex, ClassesLock);
127 * LOCKING: loader lock must be held until pairing disable_gclass_recording is called.
130 enable_gclass_recording (void)
132 ++record_gclass_instantiation;
136 * LOCKING: loader lock must be held since pairing enable_gclass_recording was called.
139 disable_gclass_recording (gclass_record_func func, void *user_data)
141 GSList **head = &gclass_recorded_list;
143 g_assert (record_gclass_instantiation > 0);
144 --record_gclass_instantiation;
147 GSList *node = *head;
148 if (func ((MonoClass*)node->data, user_data)) {
150 g_slist_free_1 (node);
156 /* We automatically discard all recorded gclasses when disabled. */
157 if (!record_gclass_instantiation && gclass_recorded_list) {
158 g_slist_free (gclass_recorded_list);
159 gclass_recorded_list = NULL;
164 * mono_class_from_typeref:
165 * @image: a MonoImage
166 * @type_token: a TypeRef token
168 * Creates the MonoClass* structure representing the type defined by
169 * the typeref token valid inside @image.
170 * Returns: The MonoClass* representing the typeref token, NULL ifcould
174 mono_class_from_typeref (MonoImage *image, guint32 type_token)
177 MonoClass *klass = mono_class_from_typeref_checked (image, type_token, &error);
178 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
183 * mono_class_from_typeref_checked:
184 * @image: a MonoImage
185 * @type_token: a TypeRef token
186 * @error: error return code, if any.
188 * Creates the MonoClass* structure representing the type defined by
189 * the typeref token valid inside @image.
191 * Returns: The MonoClass* representing the typeref token, NULL if it could
192 * not be loaded with the @error value filled with the information about the
196 mono_class_from_typeref_checked (MonoImage *image, guint32 type_token, MonoError *error)
198 guint32 cols [MONO_TYPEREF_SIZE];
199 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEREF];
201 const char *name, *nspace;
202 MonoClass *res = NULL;
205 mono_error_init (error);
207 if (!mono_verifier_verify_typeref_row (image, (type_token & 0xffffff) - 1, error))
210 mono_metadata_decode_row (t, (type_token&0xffffff)-1, cols, MONO_TYPEREF_SIZE);
212 name = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAME]);
213 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAMESPACE]);
215 idx = cols [MONO_TYPEREF_SCOPE] >> MONO_RESOLUTION_SCOPE_BITS;
216 switch (cols [MONO_TYPEREF_SCOPE] & MONO_RESOLUTION_SCOPE_MASK) {
217 case MONO_RESOLUTION_SCOPE_MODULE:
219 LAMESPEC The spec says that a null module resolution scope should go through the exported type table.
220 This is not the observed behavior of existing implementations.
221 The defacto behavior is that it's just a typedef in disguise.
223 /* a typedef in disguise */
224 res = mono_class_from_name_checked (image, nspace, name, error);
227 case MONO_RESOLUTION_SCOPE_MODULEREF:
228 module = mono_image_load_module_checked (image, idx, error);
230 res = mono_class_from_name_checked (module, nspace, name, error);
233 case MONO_RESOLUTION_SCOPE_TYPEREF: {
234 MonoClass *enclosing;
237 if (idx == mono_metadata_token_index (type_token)) {
238 mono_error_set_bad_image (error, image, "Image with self-referencing typeref token %08x.", type_token);
242 enclosing = mono_class_from_typeref_checked (image, MONO_TOKEN_TYPE_REF | idx, error);
243 return_val_if_nok (error, NULL);
245 if (enclosing->nested_classes_inited && enclosing->ext) {
246 /* Micro-optimization: don't scan the metadata tables if enclosing is already inited */
247 for (tmp = enclosing->ext->nested_classes; tmp; tmp = tmp->next) {
248 res = (MonoClass *)tmp->data;
249 if (strcmp (res->name, name) == 0)
253 /* Don't call mono_class_init as we might've been called by it recursively */
254 int i = mono_metadata_nesting_typedef (enclosing->image, enclosing->type_token, 1);
256 guint32 class_nested = mono_metadata_decode_row_col (&enclosing->image->tables [MONO_TABLE_NESTEDCLASS], i - 1, MONO_NESTED_CLASS_NESTED);
257 guint32 string_offset = mono_metadata_decode_row_col (&enclosing->image->tables [MONO_TABLE_TYPEDEF], class_nested - 1, MONO_TYPEDEF_NAME);
258 const char *nname = mono_metadata_string_heap (enclosing->image, string_offset);
260 if (strcmp (nname, name) == 0)
261 return mono_class_create_from_typedef (enclosing->image, MONO_TOKEN_TYPE_DEF | class_nested, error);
263 i = mono_metadata_nesting_typedef (enclosing->image, enclosing->type_token, i + 1);
266 g_warning ("TypeRef ResolutionScope not yet handled (%d) for %s.%s in image %s", idx, nspace, name, image->name);
269 case MONO_RESOLUTION_SCOPE_ASSEMBLYREF:
273 if (idx > image->tables [MONO_TABLE_ASSEMBLYREF].rows) {
274 mono_error_set_bad_image (error, image, "Image with invalid assemblyref token %08x.", idx);
278 if (!image->references || !image->references [idx - 1])
279 mono_assembly_load_reference (image, idx - 1);
280 g_assert (image->references [idx - 1]);
282 /* If the assembly did not load, register this as a type load exception */
283 if (image->references [idx - 1] == REFERENCE_MISSING){
284 MonoAssemblyName aname;
287 mono_assembly_get_assemblyref (image, idx - 1, &aname);
288 human_name = mono_stringify_assembly_name (&aname);
289 mono_error_set_assembly_load_simple (error, human_name, image->assembly ? image->assembly->ref_only : FALSE);
293 res = mono_class_from_name_checked (image->references [idx - 1]->image, nspace, name, error);
296 /* Generic case, should be avoided for when a better error is possible. */
297 if (!res && mono_error_ok (error)) {
298 char *name = mono_class_name_from_token (image, type_token);
299 char *assembly = mono_assembly_name_from_token (image, type_token);
300 mono_error_set_type_load_name (error, name, assembly, "Could not resolve type with token %08x", type_token);
307 mono_image_memdup (MonoImage *image, void *data, guint size)
309 void *res = mono_image_alloc (image, size);
310 memcpy (res, data, size);
314 /* Copy everything mono_metadata_free_array free. */
316 mono_dup_array_type (MonoImage *image, MonoArrayType *a)
319 a = (MonoArrayType *)mono_image_memdup (image, a, sizeof (MonoArrayType));
321 a->sizes = (int *)mono_image_memdup (image, a->sizes, a->numsizes * sizeof (int));
323 a->lobounds = (int *)mono_image_memdup (image, a->lobounds, a->numlobounds * sizeof (int));
325 a = (MonoArrayType *)g_memdup (a, sizeof (MonoArrayType));
327 a->sizes = (int *)g_memdup (a->sizes, a->numsizes * sizeof (int));
329 a->lobounds = (int *)g_memdup (a->lobounds, a->numlobounds * sizeof (int));
334 /* Copy everything mono_metadata_free_method_signature free. */
336 mono_metadata_signature_deep_dup (MonoImage *image, MonoMethodSignature *sig)
340 sig = mono_metadata_signature_dup_full (image, sig);
342 sig->ret = mono_metadata_type_dup (image, sig->ret);
343 for (i = 0; i < sig->param_count; ++i)
344 sig->params [i] = mono_metadata_type_dup (image, sig->params [i]);
350 _mono_type_get_assembly_name (MonoClass *klass, GString *str)
352 MonoAssembly *ta = klass->image->assembly;
355 name = mono_stringify_assembly_name (&ta->aname);
356 g_string_append_printf (str, ", %s", name);
361 mono_type_name_check_byref (MonoType *type, GString *str)
364 g_string_append_c (str, '&');
368 * mono_identifier_escape_type_name_chars:
369 * @str: a destination string
370 * @identifier: an IDENTIFIER in internal form
374 * The displayed form of the identifier is appended to str.
376 * The displayed form of an identifier has the characters ,+&*[]\
377 * that have special meaning in type names escaped with a preceeding
378 * backslash (\) character.
381 mono_identifier_escape_type_name_chars (GString* str, const char* identifier)
387 // reserve space for common case: there will be no escaped characters.
388 g_string_set_size(str, n + strlen(identifier));
389 g_string_set_size(str, n);
391 for (const char* s = identifier; *s != 0 ; s++) {
400 g_string_append_c (str, '\\');
401 g_string_append_c (str, *s);
404 g_string_append_c (str, *s);
412 mono_type_get_name_recurse (MonoType *type, GString *str, gboolean is_recursed,
413 MonoTypeNameFormat format)
417 switch (type->type) {
418 case MONO_TYPE_ARRAY: {
419 int i, rank = type->data.array->rank;
420 MonoTypeNameFormat nested_format;
422 nested_format = format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED ?
423 MONO_TYPE_NAME_FORMAT_FULL_NAME : format;
425 mono_type_get_name_recurse (
426 &type->data.array->eklass->byval_arg, str, FALSE, nested_format);
427 g_string_append_c (str, '[');
429 g_string_append_c (str, '*');
430 for (i = 1; i < rank; i++)
431 g_string_append_c (str, ',');
432 g_string_append_c (str, ']');
434 mono_type_name_check_byref (type, str);
436 if (format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED)
437 _mono_type_get_assembly_name (type->data.array->eklass, str);
440 case MONO_TYPE_SZARRAY: {
441 MonoTypeNameFormat nested_format;
443 nested_format = format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED ?
444 MONO_TYPE_NAME_FORMAT_FULL_NAME : format;
446 mono_type_get_name_recurse (
447 &type->data.klass->byval_arg, str, FALSE, nested_format);
448 g_string_append (str, "[]");
450 mono_type_name_check_byref (type, str);
452 if (format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED)
453 _mono_type_get_assembly_name (type->data.klass, str);
456 case MONO_TYPE_PTR: {
457 MonoTypeNameFormat nested_format;
459 nested_format = format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED ?
460 MONO_TYPE_NAME_FORMAT_FULL_NAME : format;
462 mono_type_get_name_recurse (
463 type->data.type, str, FALSE, nested_format);
464 g_string_append_c (str, '*');
466 mono_type_name_check_byref (type, str);
468 if (format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED)
469 _mono_type_get_assembly_name (mono_class_from_mono_type (type->data.type), str);
474 if (!mono_generic_param_info (type->data.generic_param))
475 g_string_append_printf (str, "%s%d", type->type == MONO_TYPE_VAR ? "!" : "!!", type->data.generic_param->num);
477 g_string_append (str, mono_generic_param_info (type->data.generic_param)->name);
479 mono_type_name_check_byref (type, str);
483 klass = mono_class_from_mono_type (type);
484 if (klass->nested_in) {
485 mono_type_get_name_recurse (
486 &klass->nested_in->byval_arg, str, TRUE, format);
487 if (format == MONO_TYPE_NAME_FORMAT_IL)
488 g_string_append_c (str, '.');
490 g_string_append_c (str, '+');
491 } else if (*klass->name_space) {
492 if (format == MONO_TYPE_NAME_FORMAT_IL)
493 g_string_append (str, klass->name_space);
495 mono_identifier_escape_type_name_chars (str, klass->name_space);
496 g_string_append_c (str, '.');
498 if (format == MONO_TYPE_NAME_FORMAT_IL) {
499 char *s = strchr (klass->name, '`');
500 int len = s ? s - klass->name : strlen (klass->name);
501 g_string_append_len (str, klass->name, len);
503 mono_identifier_escape_type_name_chars (str, klass->name);
507 if (klass->generic_class) {
508 MonoGenericClass *gclass = klass->generic_class;
509 MonoGenericInst *inst = gclass->context.class_inst;
510 MonoTypeNameFormat nested_format;
513 nested_format = format == MONO_TYPE_NAME_FORMAT_FULL_NAME ?
514 MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED : format;
516 if (format == MONO_TYPE_NAME_FORMAT_IL)
517 g_string_append_c (str, '<');
519 g_string_append_c (str, '[');
520 for (i = 0; i < inst->type_argc; i++) {
521 MonoType *t = inst->type_argv [i];
524 g_string_append_c (str, ',');
525 if ((nested_format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED) &&
526 (t->type != MONO_TYPE_VAR) && (type->type != MONO_TYPE_MVAR))
527 g_string_append_c (str, '[');
528 mono_type_get_name_recurse (inst->type_argv [i], str, FALSE, nested_format);
529 if ((nested_format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED) &&
530 (t->type != MONO_TYPE_VAR) && (type->type != MONO_TYPE_MVAR))
531 g_string_append_c (str, ']');
533 if (format == MONO_TYPE_NAME_FORMAT_IL)
534 g_string_append_c (str, '>');
536 g_string_append_c (str, ']');
537 } else if (klass->generic_container &&
538 (format != MONO_TYPE_NAME_FORMAT_FULL_NAME) &&
539 (format != MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED)) {
542 if (format == MONO_TYPE_NAME_FORMAT_IL)
543 g_string_append_c (str, '<');
545 g_string_append_c (str, '[');
546 for (i = 0; i < klass->generic_container->type_argc; i++) {
548 g_string_append_c (str, ',');
549 g_string_append (str, mono_generic_container_get_param_info (klass->generic_container, i)->name);
551 if (format == MONO_TYPE_NAME_FORMAT_IL)
552 g_string_append_c (str, '>');
554 g_string_append_c (str, ']');
557 mono_type_name_check_byref (type, str);
559 if ((format == MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED) &&
560 (type->type != MONO_TYPE_VAR) && (type->type != MONO_TYPE_MVAR))
561 _mono_type_get_assembly_name (klass, str);
567 * mono_type_get_name_full:
569 * @format: the format for the return string.
572 * Returns: The string representation in a number of formats:
574 * if format is MONO_TYPE_NAME_FORMAT_REFLECTION, the return string is
575 * returned in the formatrequired by System.Reflection, this is the
576 * inverse of mono_reflection_parse_type ().
578 * if format is MONO_TYPE_NAME_FORMAT_IL, it returns a syntax that can
579 * be used by the IL assembler.
581 * if format is MONO_TYPE_NAME_FORMAT_FULL_NAME
583 * if format is MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED
586 mono_type_get_name_full (MonoType *type, MonoTypeNameFormat format)
590 result = g_string_new ("");
592 mono_type_get_name_recurse (type, result, FALSE, format);
594 return g_string_free (result, FALSE);
598 * mono_type_get_full_name:
601 * Returns: The string representation for type as required by System.Reflection.
602 * The inverse of mono_reflection_parse_type ().
605 mono_type_get_full_name (MonoClass *klass)
607 return mono_type_get_name_full (mono_class_get_type (klass), MONO_TYPE_NAME_FORMAT_REFLECTION);
611 * mono_type_get_name:
614 * Returns: The string representation for type as it would be represented in IL code.
617 mono_type_get_name (MonoType *type)
619 return mono_type_get_name_full (type, MONO_TYPE_NAME_FORMAT_IL);
623 * mono_type_get_underlying_type:
626 * Returns: The MonoType for the underlying integer type if @type
627 * is an enum and byref is false, otherwise the type itself.
630 mono_type_get_underlying_type (MonoType *type)
632 if (type->type == MONO_TYPE_VALUETYPE && type->data.klass->enumtype && !type->byref)
633 return mono_class_enum_basetype (type->data.klass);
634 if (type->type == MONO_TYPE_GENERICINST && type->data.generic_class->container_class->enumtype && !type->byref)
635 return mono_class_enum_basetype (type->data.generic_class->container_class);
640 * mono_class_is_open_constructed_type:
643 * Returns: TRUE if type represents a generics open constructed type.
644 * IOW, not all type parameters required for the instantiation have
645 * been provided or it's a generic type definition.
647 * An open constructed type means it's a non realizable type. Not to
648 * be mixed up with an abstract type - we can't cast or dispatch to
649 * an open type, for example.
652 mono_class_is_open_constructed_type (MonoType *t)
658 case MONO_TYPE_SZARRAY:
659 return mono_class_is_open_constructed_type (&t->data.klass->byval_arg);
660 case MONO_TYPE_ARRAY:
661 return mono_class_is_open_constructed_type (&t->data.array->eklass->byval_arg);
663 return mono_class_is_open_constructed_type (t->data.type);
664 case MONO_TYPE_GENERICINST:
665 return t->data.generic_class->context.class_inst->is_open;
666 case MONO_TYPE_CLASS:
667 case MONO_TYPE_VALUETYPE:
668 return t->data.klass->generic_container != NULL;
675 This is a simple function to catch the most common bad instances of generic types.
676 Specially those that might lead to further failures in the runtime.
679 is_valid_generic_argument (MonoType *type)
681 switch (type->type) {
683 //case MONO_TYPE_TYPEDBYREF:
691 inflate_generic_type (MonoImage *image, MonoType *type, MonoGenericContext *context, MonoError *error)
693 mono_error_init (error);
695 switch (type->type) {
696 case MONO_TYPE_MVAR: {
698 int num = mono_type_get_generic_param_num (type);
699 MonoGenericInst *inst = context->method_inst;
702 if (num >= inst->type_argc) {
703 MonoGenericParamInfo *info = mono_generic_param_info (type->data.generic_param);
704 mono_error_set_bad_image (error, image, "MVAR %d (%s) cannot be expanded in this context with %d instantiations",
705 num, info ? info->name : "", inst->type_argc);
709 if (!is_valid_generic_argument (inst->type_argv [num])) {
710 MonoGenericParamInfo *info = mono_generic_param_info (type->data.generic_param);
711 mono_error_set_bad_image (error, image, "MVAR %d (%s) cannot be expanded with type 0x%x",
712 num, info ? info->name : "", inst->type_argv [num]->type);
716 * Note that the VAR/MVAR cases are different from the rest. The other cases duplicate @type,
717 * while the VAR/MVAR duplicates a type from the context. So, we need to ensure that the
718 * ->byref and ->attrs from @type are propagated to the returned type.
720 nt = mono_metadata_type_dup (image, inst->type_argv [num]);
721 nt->byref = type->byref;
722 nt->attrs = type->attrs;
725 case MONO_TYPE_VAR: {
727 int num = mono_type_get_generic_param_num (type);
728 MonoGenericInst *inst = context->class_inst;
731 if (num >= inst->type_argc) {
732 MonoGenericParamInfo *info = mono_generic_param_info (type->data.generic_param);
733 mono_error_set_bad_image (error, image, "VAR %d (%s) cannot be expanded in this context with %d instantiations",
734 num, info ? info->name : "", inst->type_argc);
737 if (!is_valid_generic_argument (inst->type_argv [num])) {
738 MonoGenericParamInfo *info = mono_generic_param_info (type->data.generic_param);
739 mono_error_set_bad_image (error, image, "VAR %d (%s) cannot be expanded with type 0x%x",
740 num, info ? info->name : "", inst->type_argv [num]->type);
743 nt = mono_metadata_type_dup (image, inst->type_argv [num]);
744 nt->byref = type->byref;
745 nt->attrs = type->attrs;
748 case MONO_TYPE_SZARRAY: {
749 MonoClass *eclass = type->data.klass;
750 MonoType *nt, *inflated = inflate_generic_type (NULL, &eclass->byval_arg, context, error);
751 if (!inflated || !mono_error_ok (error))
753 nt = mono_metadata_type_dup (image, type);
754 nt->data.klass = mono_class_from_mono_type (inflated);
755 mono_metadata_free_type (inflated);
758 case MONO_TYPE_ARRAY: {
759 MonoClass *eclass = type->data.array->eklass;
760 MonoType *nt, *inflated = inflate_generic_type (NULL, &eclass->byval_arg, context, error);
761 if (!inflated || !mono_error_ok (error))
763 nt = mono_metadata_type_dup (image, type);
764 nt->data.array->eklass = mono_class_from_mono_type (inflated);
765 mono_metadata_free_type (inflated);
768 case MONO_TYPE_GENERICINST: {
769 MonoGenericClass *gclass = type->data.generic_class;
770 MonoGenericInst *inst;
772 if (!gclass->context.class_inst->is_open)
775 inst = mono_metadata_inflate_generic_inst (gclass->context.class_inst, context, error);
776 return_val_if_nok (error, NULL);
778 if (inst != gclass->context.class_inst)
779 gclass = mono_metadata_lookup_generic_class (gclass->container_class, inst, gclass->is_dynamic);
781 if (gclass == type->data.generic_class)
784 nt = mono_metadata_type_dup (image, type);
785 nt->data.generic_class = gclass;
788 case MONO_TYPE_CLASS:
789 case MONO_TYPE_VALUETYPE: {
790 MonoClass *klass = type->data.klass;
791 MonoGenericContainer *container = klass->generic_container;
792 MonoGenericInst *inst;
793 MonoGenericClass *gclass = NULL;
799 /* We can't use context->class_inst directly, since it can have more elements */
800 inst = mono_metadata_inflate_generic_inst (container->context.class_inst, context, error);
801 return_val_if_nok (error, NULL);
803 if (inst == container->context.class_inst)
806 gclass = mono_metadata_lookup_generic_class (klass, inst, image_is_dynamic (klass->image));
808 nt = mono_metadata_type_dup (image, type);
809 nt->type = MONO_TYPE_GENERICINST;
810 nt->data.generic_class = gclass;
820 mono_generic_class_get_context (MonoGenericClass *gclass)
822 return &gclass->context;
826 mono_class_get_context (MonoClass *klass)
828 return klass->generic_class ? mono_generic_class_get_context (klass->generic_class) : NULL;
832 * mono_class_get_generic_container:
834 * Return the generic container of KLASS which should be a generic type definition.
836 MonoGenericContainer*
837 mono_class_get_generic_container (MonoClass *klass)
839 g_assert (klass->is_generic);
841 return klass->generic_container;
845 * mono_class_get_generic_class:
847 * Return the MonoGenericClass of KLASS, which should be a generic instance.
850 mono_class_get_generic_class (MonoClass *klass)
852 g_assert (klass->is_inflated);
854 return klass->generic_class;
858 * mono_class_inflate_generic_type_with_mempool:
859 * @mempool: a mempool
861 * @context: a generics context
862 * @error: error context
864 * The same as mono_class_inflate_generic_type, but allocates the MonoType
865 * from mempool if it is non-NULL. If it is NULL, the MonoType is
866 * allocated on the heap and is owned by the caller.
867 * The returned type can potentially be the same as TYPE, so it should not be
868 * modified by the caller, and it should be freed using mono_metadata_free_type ().
871 mono_class_inflate_generic_type_with_mempool (MonoImage *image, MonoType *type, MonoGenericContext *context, MonoError *error)
873 MonoType *inflated = NULL;
874 mono_error_init (error);
877 inflated = inflate_generic_type (image, type, context, error);
878 return_val_if_nok (error, NULL);
881 MonoType *shared = mono_metadata_get_shared_type (type);
886 return mono_metadata_type_dup (image, type);
890 mono_stats.inflated_type_count++;
895 * mono_class_inflate_generic_type:
897 * @context: a generics context
899 * If @type is a generic type and @context is not NULL, instantiate it using the
900 * generics context @context.
902 * Returns: The instantiated type or a copy of @type. The returned MonoType is allocated
903 * on the heap and is owned by the caller. Returns NULL on error.
905 * @deprecated Please use mono_class_inflate_generic_type_checked instead
908 mono_class_inflate_generic_type (MonoType *type, MonoGenericContext *context)
912 result = mono_class_inflate_generic_type_checked (type, context, &error);
913 mono_error_cleanup (&error);
918 * mono_class_inflate_generic_type:
920 * @context: a generics context
921 * @error: error context to use
923 * If @type is a generic type and @context is not NULL, instantiate it using the
924 * generics context @context.
926 * Returns: The instantiated type or a copy of @type. The returned MonoType is allocated
927 * on the heap and is owned by the caller.
930 mono_class_inflate_generic_type_checked (MonoType *type, MonoGenericContext *context, MonoError *error)
932 return mono_class_inflate_generic_type_with_mempool (NULL, type, context, error);
936 * mono_class_inflate_generic_type_no_copy:
938 * Same as inflate_generic_type_with_mempool, but return TYPE if no inflation
942 mono_class_inflate_generic_type_no_copy (MonoImage *image, MonoType *type, MonoGenericContext *context, MonoError *error)
944 MonoType *inflated = NULL;
946 mono_error_init (error);
948 inflated = inflate_generic_type (image, type, context, error);
949 return_val_if_nok (error, NULL);
955 mono_stats.inflated_type_count++;
960 * mono_class_inflate_generic_class:
962 * Inflate the class @gklass with @context. Set @error on failure.
965 mono_class_inflate_generic_class_checked (MonoClass *gklass, MonoGenericContext *context, MonoError *error)
970 inflated = mono_class_inflate_generic_type_checked (&gklass->byval_arg, context, error);
971 return_val_if_nok (error, NULL);
973 res = mono_class_from_mono_type (inflated);
974 mono_metadata_free_type (inflated);
979 static MonoGenericContext
980 inflate_generic_context (MonoGenericContext *context, MonoGenericContext *inflate_with, MonoError *error)
982 MonoGenericInst *class_inst = NULL;
983 MonoGenericInst *method_inst = NULL;
984 MonoGenericContext res = { NULL, NULL };
986 mono_error_init (error);
988 if (context->class_inst) {
989 class_inst = mono_metadata_inflate_generic_inst (context->class_inst, inflate_with, error);
990 if (!mono_error_ok (error))
994 if (context->method_inst) {
995 method_inst = mono_metadata_inflate_generic_inst (context->method_inst, inflate_with, error);
996 if (!mono_error_ok (error))
1000 res.class_inst = class_inst;
1001 res.method_inst = method_inst;
1007 * mono_class_inflate_generic_method:
1008 * @method: a generic method
1009 * @context: a generics context
1011 * Instantiate the generic method @method using the generics context @context.
1013 * Returns: The new instantiated method
1016 mono_class_inflate_generic_method (MonoMethod *method, MonoGenericContext *context)
1018 return mono_class_inflate_generic_method_full (method, NULL, context);
1022 mono_class_inflate_generic_method_checked (MonoMethod *method, MonoGenericContext *context, MonoError *error)
1024 return mono_class_inflate_generic_method_full_checked (method, NULL, context, error);
1028 * mono_class_inflate_generic_method_full:
1030 * Instantiate method @method with the generic context @context.
1031 * BEWARE: All non-trivial fields are invalid, including klass, signature, and header.
1032 * Use mono_method_signature () and mono_method_get_header () to get the correct values.
1035 mono_class_inflate_generic_method_full (MonoMethod *method, MonoClass *klass_hint, MonoGenericContext *context)
1038 MonoMethod *res = mono_class_inflate_generic_method_full_checked (method, klass_hint, context, &error);
1039 if (!mono_error_ok (&error))
1040 /*FIXME do proper error handling - on this case, kill this function. */
1041 g_error ("Could not inflate generic method due to %s", mono_error_get_message (&error));
1047 * mono_class_inflate_generic_method_full_checked:
1048 * Same as mono_class_inflate_generic_method_full but return failure using @error.
1051 mono_class_inflate_generic_method_full_checked (MonoMethod *method, MonoClass *klass_hint, MonoGenericContext *context, MonoError *error)
1054 MonoMethodInflated *iresult, *cached;
1055 MonoMethodSignature *sig;
1056 MonoGenericContext tmp_context;
1058 mono_error_init (error);
1060 /* The `method' has already been instantiated before => we need to peel out the instantiation and create a new context */
1061 while (method->is_inflated) {
1062 MonoGenericContext *method_context = mono_method_get_context (method);
1063 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
1065 tmp_context = inflate_generic_context (method_context, context, error);
1066 return_val_if_nok (error, NULL);
1068 context = &tmp_context;
1070 if (mono_metadata_generic_context_equal (method_context, context))
1073 method = imethod->declaring;
1077 * A method only needs to be inflated if the context has argument for which it is
1080 * class Foo<T> { void Bar(); } - doesn't need to be inflated if only mvars' are supplied
1081 * class Foo { void Bar<T> (); } - doesn't need to be if only vars' are supplied
1084 if (!((method->is_generic && context->method_inst) ||
1085 (method->klass->generic_container && context->class_inst)))
1088 iresult = g_new0 (MonoMethodInflated, 1);
1089 iresult->context = *context;
1090 iresult->declaring = method;
1092 if (!context->method_inst && method->is_generic)
1093 iresult->context.method_inst = mono_method_get_generic_container (method)->context.method_inst;
1095 if (!context->class_inst) {
1096 g_assert (!iresult->declaring->klass->generic_class);
1097 if (iresult->declaring->klass->generic_container)
1098 iresult->context.class_inst = iresult->declaring->klass->generic_container->context.class_inst;
1099 else if (iresult->declaring->klass->generic_class)
1100 iresult->context.class_inst = iresult->declaring->klass->generic_class->context.class_inst;
1102 /* This can happen with some callers like mono_object_get_virtual_method () */
1103 if (!iresult->declaring->klass->generic_container && !iresult->declaring->klass->generic_class)
1104 iresult->context.class_inst = NULL;
1106 MonoImageSet *set = mono_metadata_get_image_set_for_method (iresult);
1109 mono_image_set_lock (set);
1110 cached = (MonoMethodInflated *)g_hash_table_lookup (set->gmethod_cache, iresult);
1111 mono_image_set_unlock (set);
1115 return (MonoMethod*)cached;
1118 mono_stats.inflated_method_count++;
1120 inflated_methods_size += sizeof (MonoMethodInflated);
1122 sig = mono_method_signature (method);
1124 char *name = mono_type_get_full_name (method->klass);
1125 mono_error_set_bad_image (error, method->klass->image, "Could not resolve signature of method %s:%s", name, method->name);
1131 memcpy (&iresult->method.pinvoke, method, sizeof (MonoMethodPInvoke));
1133 memcpy (&iresult->method.method, method, sizeof (MonoMethod));
1136 result = (MonoMethod *) iresult;
1137 result->is_inflated = TRUE;
1138 result->is_generic = FALSE;
1139 result->sre_method = FALSE;
1140 result->signature = NULL;
1142 if (method->wrapper_type) {
1143 MonoMethodWrapper *mw = (MonoMethodWrapper*)method;
1144 MonoMethodWrapper *resw = (MonoMethodWrapper*)result;
1145 int len = GPOINTER_TO_INT (((void**)mw->method_data) [0]);
1147 resw->method_data = (void **)g_malloc (sizeof (gpointer) * (len + 1));
1148 memcpy (resw->method_data, mw->method_data, sizeof (gpointer) * (len + 1));
1151 if (iresult->context.method_inst) {
1152 /* Set the generic_container of the result to the generic_container of method */
1153 MonoGenericContainer *generic_container = mono_method_get_generic_container (method);
1155 if (generic_container && iresult->context.method_inst == generic_container->context.method_inst) {
1156 result->is_generic = 1;
1157 mono_method_set_generic_container (result, generic_container);
1161 if (!klass_hint || !klass_hint->generic_class ||
1162 klass_hint->generic_class->container_class != method->klass ||
1163 klass_hint->generic_class->context.class_inst != context->class_inst)
1166 if (method->klass->generic_container)
1167 result->klass = klass_hint;
1169 if (!result->klass) {
1170 MonoType *inflated = inflate_generic_type (NULL, &method->klass->byval_arg, context, error);
1171 if (!mono_error_ok (error))
1174 result->klass = inflated ? mono_class_from_mono_type (inflated) : method->klass;
1176 mono_metadata_free_type (inflated);
1180 * FIXME: This should hold, but it doesn't:
1182 * if (result->is_inflated && mono_method_get_context (result)->method_inst &&
1183 * mono_method_get_context (result)->method_inst == mono_method_get_generic_container (((MonoMethodInflated*)result)->declaring)->context.method_inst) {
1184 * g_assert (result->is_generic);
1187 * Fixing this here causes other things to break, hence a very
1188 * ugly hack in mini-trampolines.c - see
1189 * is_generic_method_definition().
1193 mono_image_set_lock (set);
1194 cached = (MonoMethodInflated *)g_hash_table_lookup (set->gmethod_cache, iresult);
1196 g_hash_table_insert (set->gmethod_cache, iresult, iresult);
1197 iresult->owner = set;
1200 mono_image_set_unlock (set);
1202 return (MonoMethod*)cached;
1210 * mono_get_inflated_method:
1212 * Obsolete. We keep it around since it's mentioned in the public API.
1215 mono_get_inflated_method (MonoMethod *method)
1221 * mono_method_get_context_general:
1223 * @uninflated: handle uninflated methods?
1225 * Returns the generic context of a method or NULL if it doesn't have
1226 * one. For an inflated method that's the context stored in the
1227 * method. Otherwise it's in the method's generic container or in the
1228 * generic container of the method's class.
1231 mono_method_get_context_general (MonoMethod *method, gboolean uninflated)
1233 if (method->is_inflated) {
1234 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
1235 return &imethod->context;
1239 if (method->is_generic)
1240 return &(mono_method_get_generic_container (method)->context);
1241 if (method->klass->generic_container)
1242 return &method->klass->generic_container->context;
1247 * mono_method_get_context:
1250 * Returns the generic context for method if it's inflated, otherwise
1254 mono_method_get_context (MonoMethod *method)
1256 return mono_method_get_context_general (method, FALSE);
1260 * mono_method_get_generic_container:
1262 * Returns the generic container of METHOD, which should be a generic method definition.
1263 * Returns NULL if METHOD is not a generic method definition.
1264 * LOCKING: Acquires the loader lock.
1266 MonoGenericContainer*
1267 mono_method_get_generic_container (MonoMethod *method)
1269 MonoGenericContainer *container;
1271 if (!method->is_generic)
1274 container = (MonoGenericContainer *)mono_image_property_lookup (method->klass->image, method, MONO_METHOD_PROP_GENERIC_CONTAINER);
1275 g_assert (container);
1281 * mono_method_set_generic_container:
1283 * Sets the generic container of METHOD to CONTAINER.
1284 * LOCKING: Acquires the image lock.
1287 mono_method_set_generic_container (MonoMethod *method, MonoGenericContainer* container)
1289 g_assert (method->is_generic);
1291 mono_image_property_insert (method->klass->image, method, MONO_METHOD_PROP_GENERIC_CONTAINER, container);
1295 * mono_class_find_enum_basetype:
1296 * @class: The enum class
1298 * Determine the basetype of an enum by iterating through its fields. We do this
1299 * in a separate function since it is cheaper than calling mono_class_setup_fields.
1302 mono_class_find_enum_basetype (MonoClass *klass, MonoError *error)
1304 MonoGenericContainer *container = NULL;
1305 MonoImage *m = klass->image;
1306 const int top = klass->field.count;
1309 g_assert (klass->enumtype);
1311 mono_error_init (error);
1313 if (klass->generic_container)
1314 container = klass->generic_container;
1315 else if (klass->generic_class) {
1316 MonoClass *gklass = klass->generic_class->container_class;
1318 container = gklass->generic_container;
1319 g_assert (container);
1323 * Fetch all the field information.
1325 for (i = 0; i < top; i++){
1327 guint32 cols [MONO_FIELD_SIZE];
1328 int idx = klass->field.first + i;
1331 /* klass->field.first and idx points into the fieldptr table */
1332 mono_metadata_decode_table_row (m, MONO_TABLE_FIELD, idx, cols, MONO_FIELD_SIZE);
1334 if (cols [MONO_FIELD_FLAGS] & FIELD_ATTRIBUTE_STATIC) //no need to decode static fields
1337 if (!mono_verifier_verify_field_signature (klass->image, cols [MONO_FIELD_SIGNATURE], NULL)) {
1338 mono_error_set_bad_image (error, klass->image, "Invalid field signature %x", cols [MONO_FIELD_SIGNATURE]);
1342 sig = mono_metadata_blob_heap (m, cols [MONO_FIELD_SIGNATURE]);
1343 mono_metadata_decode_value (sig, &sig);
1344 /* FIELD signature == 0x06 */
1346 mono_error_set_bad_image (error, klass->image, "Invalid field signature %x, expected 0x6 but got %x", cols [MONO_FIELD_SIGNATURE], *sig);
1350 ftype = mono_metadata_parse_type_checked (m, container, cols [MONO_FIELD_FLAGS], FALSE, sig + 1, &sig, error);
1354 if (klass->generic_class) {
1355 //FIXME do we leak here?
1356 ftype = mono_class_inflate_generic_type_checked (ftype, mono_class_get_context (klass), error);
1357 if (!mono_error_ok (error))
1359 ftype->attrs = cols [MONO_FIELD_FLAGS];
1364 mono_error_set_type_load_class (error, klass, "Could not find base type");
1371 * Checks for MonoClass::has_failure without resolving all MonoType's into MonoClass'es
1374 mono_type_has_exceptions (MonoType *type)
1376 switch (type->type) {
1377 case MONO_TYPE_CLASS:
1378 case MONO_TYPE_VALUETYPE:
1379 case MONO_TYPE_SZARRAY:
1380 return mono_class_has_failure (type->data.klass);
1381 case MONO_TYPE_ARRAY:
1382 return mono_class_has_failure (type->data.array->eklass);
1383 case MONO_TYPE_GENERICINST:
1384 return mono_class_has_failure (mono_generic_class_get_class (type->data.generic_class));
1391 mono_error_set_for_class_failure (MonoError *oerror, const MonoClass *klass)
1393 g_assert (mono_class_has_failure (klass));
1394 MonoErrorBoxed *box = (MonoErrorBoxed*)mono_class_get_exception_data (klass);
1395 mono_error_set_from_boxed (oerror, box);
1402 * Allocate memory for some data belonging to CLASS, either from its image's mempool,
1406 mono_class_alloc (MonoClass *klass, int size)
1408 if (klass->generic_class)
1409 return mono_image_set_alloc (klass->generic_class->owner, size);
1411 return mono_image_alloc (klass->image, size);
1415 mono_class_alloc0 (MonoClass *klass, int size)
1419 res = mono_class_alloc (klass, size);
1420 memset (res, 0, size);
1424 #define mono_class_new0(klass,struct_type, n_structs) \
1425 ((struct_type *) mono_class_alloc0 ((klass), ((gsize) sizeof (struct_type)) * ((gsize) (n_structs))))
1428 * mono_class_setup_basic_field_info:
1429 * @class: The class to initialize
1431 * Initializes the following fields in MonoClass:
1432 * * klass->fields (only field->parent and field->name)
1433 * * klass->field.count
1434 * * klass->field.first
1435 * LOCKING: Acquires the loader lock
1438 mono_class_setup_basic_field_info (MonoClass *klass)
1440 MonoClassField *field;
1441 MonoClassField *fields;
1449 gtd = klass->generic_class ? mono_class_get_generic_type_definition (klass) : NULL;
1450 image = klass->image;
1452 if (klass->generic_class && image_is_dynamic (klass->generic_class->container_class->image) && !klass->generic_class->container_class->wastypebuilder) {
1454 * This happens when a generic instance of an unfinished generic typebuilder
1455 * is used as an element type for creating an array type. We can't initialize
1456 * the fields of this class using the fields of gklass, since gklass is not
1457 * finished yet, fields could be added to it later.
1463 mono_class_setup_basic_field_info (gtd);
1465 mono_loader_lock ();
1466 klass->field.first = gtd->field.first;
1467 klass->field.count = gtd->field.count;
1468 mono_loader_unlock ();
1471 top = klass->field.count;
1473 fields = (MonoClassField *)mono_class_alloc0 (klass, sizeof (MonoClassField) * top);
1476 * Fetch all the field information.
1478 for (i = 0; i < top; i++){
1479 field = &fields [i];
1480 field->parent = klass;
1483 field->name = mono_field_get_name (>d->fields [i]);
1485 int idx = klass->field.first + i;
1486 /* klass->field.first and idx points into the fieldptr table */
1487 guint32 name_idx = mono_metadata_decode_table_row_col (image, MONO_TABLE_FIELD, idx, MONO_FIELD_NAME);
1488 /* The name is needed for fieldrefs */
1489 field->name = mono_metadata_string_heap (image, name_idx);
1493 mono_memory_barrier ();
1495 mono_loader_lock ();
1497 klass->fields = fields;
1498 mono_loader_unlock ();
1502 * mono_class_set_failure_causedby_class:
1503 * @klass: the class that is failing
1504 * @caused_by: the class that caused the failure
1505 * @msg: Why @klass is failing.
1507 * If @caused_by has a failure, sets a TypeLoadException failure on
1508 * @klass with message "@msg, due to: {@caused_by message}".
1510 * Returns: TRUE if a failiure was set, or FALSE if @caused_by doesn't have a failure.
1513 mono_class_set_type_load_failure_causedby_class (MonoClass *klass, const MonoClass *caused_by, const gchar* msg)
1515 if (mono_class_has_failure (caused_by)) {
1516 MonoError cause_error;
1517 mono_error_init (&cause_error);
1518 mono_error_set_for_class_failure (&cause_error, caused_by);
1519 mono_class_set_type_load_failure (klass, "%s, due to: %s", msg, mono_error_get_message (&cause_error));
1520 mono_error_cleanup (&cause_error);
1529 * mono_class_setup_fields:
1530 * @klass: The class to initialize
1532 * Initializes klass->fields, computes class layout and sizes.
1533 * typebuilder_setup_fields () is the corresponding function for dynamic classes.
1534 * Sets the following fields in @klass:
1538 * - has_references (if the class contains instance references firled or structs that contain references)
1539 * - has_static_refs (same, but for static fields)
1540 * - instance_size (size of the object in memory)
1541 * - class_size (size needed for the static fields)
1542 * - size_inited (flag set when the instance_size is set)
1543 * - element_class/cast_class (for enums)
1546 * LOCKING: Acquires the loader lock.
1549 mono_class_setup_fields (MonoClass *klass)
1552 MonoImage *m = klass->image;
1554 guint32 layout = klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK;
1556 guint32 real_size = 0;
1557 guint32 packing_size = 0;
1559 gboolean explicit_size;
1560 MonoClassField *field;
1563 if (klass->fields_inited)
1566 if (klass->generic_class && image_is_dynamic (klass->generic_class->container_class->image) && !klass->generic_class->container_class->wastypebuilder) {
1568 * This happens when a generic instance of an unfinished generic typebuilder
1569 * is used as an element type for creating an array type. We can't initialize
1570 * the fields of this class using the fields of gklass, since gklass is not
1571 * finished yet, fields could be added to it later.
1576 mono_class_setup_basic_field_info (klass);
1577 top = klass->field.count;
1579 gtd = klass->generic_class ? mono_class_get_generic_type_definition (klass) : NULL;
1581 mono_class_setup_fields (gtd);
1582 if (mono_class_set_type_load_failure_causedby_class (klass, gtd, "Generic type definition failed"))
1587 if (klass->parent) {
1588 /* For generic instances, klass->parent might not have been initialized */
1589 mono_class_init (klass->parent);
1590 mono_class_setup_fields (klass->parent);
1591 if (mono_class_set_type_load_failure_causedby_class (klass, klass->parent, "Could not set up parent class"))
1593 instance_size = klass->parent->instance_size;
1595 instance_size = sizeof (MonoObject);
1598 /* Get the real size */
1599 explicit_size = mono_metadata_packing_from_typedef (klass->image, klass->type_token, &packing_size, &real_size);
1601 instance_size += real_size;
1604 * This function can recursively call itself.
1605 * Prevent infinite recursion by using a list in TLS.
1607 GSList *init_list = (GSList *)mono_native_tls_get_value (setup_fields_tls_id);
1608 if (g_slist_find (init_list, klass))
1610 init_list = g_slist_prepend (init_list, klass);
1611 mono_native_tls_set_value (setup_fields_tls_id, init_list);
1614 * Fetch all the field information.
1616 for (i = 0; i < top; i++) {
1617 int idx = klass->field.first + i;
1618 field = &klass->fields [i];
1621 mono_field_resolve_type (field, &error);
1622 if (!mono_error_ok (&error)) {
1623 /*mono_field_resolve_type already failed class*/
1624 mono_error_cleanup (&error);
1628 g_error ("could not resolve %s:%s\n", mono_type_get_full_name(klass), field->name);
1629 g_assert (field->type);
1632 if (mono_field_is_deleted (field))
1634 if (layout == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) {
1636 mono_metadata_field_info (m, idx, &uoffset, NULL, NULL);
1637 int offset = uoffset;
1639 if (offset == (guint32)-1 && !(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
1640 mono_class_set_type_load_failure (klass, "Missing field layout info for %s", field->name);
1643 if (offset < -1) { /*-1 is used to encode special static fields */
1644 mono_class_set_type_load_failure (klass, "Field '%s' has a negative offset %d", field->name, offset);
1647 if (klass->generic_container) {
1648 mono_class_set_type_load_failure (klass, "Generic class cannot have explicit layout.");
1652 if (mono_type_has_exceptions (field->type)) {
1653 char *class_name = mono_type_get_full_name (klass);
1654 char *type_name = mono_type_full_name (field->type);
1656 mono_class_set_type_load_failure (klass, "");
1657 g_warning ("Invalid type %s for instance field %s:%s", type_name, class_name, field->name);
1658 g_free (class_name);
1662 /* The def_value of fields is compute lazily during vtable creation */
1665 if (!mono_class_has_failure (klass))
1666 mono_class_layout_fields (klass, instance_size, packing_size, FALSE);
1668 init_list = g_slist_remove (init_list, klass);
1669 mono_native_tls_set_value (setup_fields_tls_id, init_list);
1673 * mono_class_has_references:
1675 * Returns whenever @klass->has_references is set, initializing it if needed.
1676 * Aquires the loader lock.
1679 mono_class_has_references (MonoClass *klass)
1681 if (klass->init_pending) {
1682 /* Be conservative */
1685 mono_class_init (klass);
1687 return klass->has_references;
1692 * mono_type_get_basic_type_from_generic:
1695 * Returns a closed type corresponding to the possibly open type
1699 mono_type_get_basic_type_from_generic (MonoType *type)
1701 /* When we do generic sharing we let type variables stand for reference/primitive types. */
1702 if (!type->byref && (type->type == MONO_TYPE_VAR || type->type == MONO_TYPE_MVAR) &&
1703 (!type->data.generic_param->gshared_constraint || type->data.generic_param->gshared_constraint->type == MONO_TYPE_OBJECT))
1704 return &mono_defaults.object_class->byval_arg;
1709 type_has_references (MonoClass *klass, MonoType *ftype)
1711 if (MONO_TYPE_IS_REFERENCE (ftype) || IS_GC_REFERENCE (klass, ftype) || ((MONO_TYPE_ISSTRUCT (ftype) && mono_class_has_references (mono_class_from_mono_type (ftype)))))
1713 if (!ftype->byref && (ftype->type == MONO_TYPE_VAR || ftype->type == MONO_TYPE_MVAR)) {
1714 MonoGenericParam *gparam = ftype->data.generic_param;
1716 if (gparam->gshared_constraint)
1717 return mono_class_has_references (mono_class_from_mono_type (gparam->gshared_constraint));
1723 * mono_class_layout_fields:
1725 * @base_instance_size: base instance size
1728 * This contains the common code for computing the layout of classes and sizes.
1729 * This should only be called from mono_class_setup_fields () and
1730 * typebuilder_setup_fields ().
1732 * LOCKING: Acquires the loader lock
1735 mono_class_layout_fields (MonoClass *klass, int base_instance_size, int packing_size, gboolean sre)
1738 const int top = klass->field.count;
1739 guint32 layout = klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK;
1740 guint32 pass, passes, real_size;
1741 gboolean gc_aware_layout = FALSE;
1742 gboolean has_static_fields = FALSE;
1743 gboolean has_references = FALSE;
1744 gboolean has_static_refs = FALSE;
1745 MonoClassField *field;
1747 int instance_size = base_instance_size;
1748 int class_size, min_align;
1752 * We want to avoid doing complicated work inside locks, so we compute all the required
1753 * information and write it to @klass inside a lock.
1755 if (klass->fields_inited)
1758 if ((packing_size & 0xffffff00) != 0) {
1759 mono_class_set_type_load_failure (klass, "Could not load struct '%s' with packing size %d >= 256", klass->name, packing_size);
1763 if (klass->parent) {
1764 min_align = klass->parent->min_align;
1765 /* we use | since it may have been set already */
1766 has_references = klass->has_references | klass->parent->has_references;
1770 /* We can't really enable 16 bytes alignment until the GC supports it.
1771 The whole layout/instance size code must be reviewed because we do alignment calculation in terms of the
1772 boxed instance, which leads to unexplainable holes at the beginning of an object embedding a simd type.
1773 Bug #506144 is an example of this issue.
1775 if (klass->simd_type)
1780 * When we do generic sharing we need to have layout
1781 * information for open generic classes (either with a generic
1782 * context containing type variables or with a generic
1783 * container), so we don't return in that case anymore.
1786 if (klass->enumtype) {
1787 for (i = 0; i < top; i++) {
1788 field = &klass->fields [i];
1789 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
1790 klass->cast_class = klass->element_class = mono_class_from_mono_type (field->type);
1795 if (!mono_class_enum_basetype (klass)) {
1796 mono_class_set_type_load_failure (klass, "The enumeration's base type is invalid.");
1802 * Enable GC aware auto layout: in this mode, reference
1803 * fields are grouped together inside objects, increasing collector
1805 * Requires that all classes whose layout is known to native code be annotated
1806 * with [StructLayout (LayoutKind.Sequential)]
1807 * Value types have gc_aware_layout disabled by default, as per
1808 * what the default is for other runtimes.
1810 /* corlib is missing [StructLayout] directives in many places */
1811 if (layout == TYPE_ATTRIBUTE_AUTO_LAYOUT) {
1812 if (!klass->valuetype)
1813 gc_aware_layout = TRUE;
1816 /* Compute klass->blittable */
1819 blittable = klass->parent->blittable;
1820 if (layout == TYPE_ATTRIBUTE_AUTO_LAYOUT && !(mono_is_corlib_image (klass->image) && !strcmp (klass->name_space, "System") && !strcmp (klass->name, "ValueType")) && top)
1822 for (i = 0; i < top; i++) {
1823 field = &klass->fields [i];
1825 if (mono_field_is_deleted (field))
1827 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
1830 if (field->type->byref || MONO_TYPE_IS_REFERENCE (field->type)) {
1833 MonoClass *field_class = mono_class_from_mono_type (field->type);
1835 mono_class_setup_fields (field_class);
1836 if (mono_class_has_failure (field_class)) {
1837 MonoError field_error;
1838 mono_error_init (&field_error);
1839 mono_error_set_for_class_failure (&field_error, field_class);
1840 mono_class_set_type_load_failure (klass, "Could not set up field '%s' due to: %s", field->name, mono_error_get_message (&field_error));
1841 mono_error_cleanup (&field_error);
1845 if (!field_class || !field_class->blittable)
1849 if (klass->enumtype)
1850 blittable = klass->element_class->blittable;
1852 if (mono_class_has_failure (klass))
1854 if (klass == mono_defaults.string_class)
1857 /* Compute klass->has_references */
1859 * Process non-static fields first, since static fields might recursively
1860 * refer to the class itself.
1862 for (i = 0; i < top; i++) {
1865 field = &klass->fields [i];
1867 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
1868 ftype = mono_type_get_underlying_type (field->type);
1869 ftype = mono_type_get_basic_type_from_generic (ftype);
1870 if (type_has_references (klass, ftype))
1871 has_references = TRUE;
1876 * Compute field layout and total size (not considering static fields)
1878 field_offsets = g_new0 (int, top);
1880 case TYPE_ATTRIBUTE_AUTO_LAYOUT:
1881 case TYPE_ATTRIBUTE_SEQUENTIAL_LAYOUT:
1882 if (gc_aware_layout)
1887 if (layout != TYPE_ATTRIBUTE_AUTO_LAYOUT)
1890 if (klass->parent) {
1891 mono_class_setup_fields (klass->parent);
1892 if (mono_class_set_type_load_failure_causedby_class (klass, klass->parent, "Cannot initialize parent class"))
1894 real_size = klass->parent->instance_size;
1896 real_size = sizeof (MonoObject);
1899 for (pass = 0; pass < passes; ++pass) {
1900 for (i = 0; i < top; i++){
1905 field = &klass->fields [i];
1907 if (mono_field_is_deleted (field))
1909 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
1912 ftype = mono_type_get_underlying_type (field->type);
1913 ftype = mono_type_get_basic_type_from_generic (ftype);
1914 if (gc_aware_layout) {
1915 if (type_has_references (klass, ftype)) {
1924 if ((top == 1) && (instance_size == sizeof (MonoObject)) &&
1925 (strcmp (mono_field_get_name (field), "$PRIVATE$") == 0)) {
1926 /* This field is a hack inserted by MCS to empty structures */
1930 size = mono_type_size (field->type, &align);
1932 /* FIXME (LAMESPEC): should we also change the min alignment according to pack? */
1933 align = packing_size ? MIN (packing_size, align): align;
1934 /* if the field has managed references, we need to force-align it
1937 if (type_has_references (klass, ftype))
1938 align = MAX (align, sizeof (gpointer));
1940 min_align = MAX (align, min_align);
1941 field_offsets [i] = real_size;
1943 field_offsets [i] += align - 1;
1944 field_offsets [i] &= ~(align - 1);
1946 /*TypeBuilders produce all sort of weird things*/
1947 g_assert (image_is_dynamic (klass->image) || field_offsets [i] > 0);
1948 real_size = field_offsets [i] + size;
1951 instance_size = MAX (real_size, instance_size);
1953 if (instance_size & (min_align - 1)) {
1954 instance_size += min_align - 1;
1955 instance_size &= ~(min_align - 1);
1959 case TYPE_ATTRIBUTE_EXPLICIT_LAYOUT: {
1963 for (i = 0; i < top; i++) {
1968 field = &klass->fields [i];
1971 * There must be info about all the fields in a type if it
1972 * uses explicit layout.
1974 if (mono_field_is_deleted (field))
1976 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
1979 size = mono_type_size (field->type, &align);
1980 align = packing_size ? MIN (packing_size, align): align;
1981 min_align = MAX (align, min_align);
1984 /* Already set by typebuilder_setup_fields () */
1985 field_offsets [i] = field->offset + sizeof (MonoObject);
1987 int idx = klass->field.first + i;
1989 mono_metadata_field_info (klass->image, idx, &offset, NULL, NULL);
1990 field_offsets [i] = offset + sizeof (MonoObject);
1992 ftype = mono_type_get_underlying_type (field->type);
1993 ftype = mono_type_get_basic_type_from_generic (ftype);
1994 if (type_has_references (klass, ftype)) {
1995 if (field_offsets [i] % sizeof (gpointer)) {
1996 mono_class_set_type_load_failure (klass, "Reference typed field '%s' has explicit offset that is not pointer-size aligned.", field->name);
2003 real_size = MAX (real_size, size + field_offsets [i]);
2006 if (klass->has_references) {
2007 ref_bitmap = g_new0 (guint8, real_size / sizeof (gpointer));
2009 /* Check for overlapping reference and non-reference fields */
2010 for (i = 0; i < top; i++) {
2013 field = &klass->fields [i];
2015 if (mono_field_is_deleted (field))
2017 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
2019 ftype = mono_type_get_underlying_type (field->type);
2020 if (MONO_TYPE_IS_REFERENCE (ftype))
2021 ref_bitmap [field_offsets [i] / sizeof (gpointer)] = 1;
2023 for (i = 0; i < top; i++) {
2024 field = &klass->fields [i];
2026 if (mono_field_is_deleted (field))
2028 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
2031 // FIXME: Too much code does this
2033 if (!MONO_TYPE_IS_REFERENCE (field->type) && ref_bitmap [field_offsets [i] / sizeof (gpointer)]) {
2034 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]);
2038 g_free (ref_bitmap);
2041 instance_size = MAX (real_size, instance_size);
2042 if (instance_size & (min_align - 1)) {
2043 instance_size += min_align - 1;
2044 instance_size &= ~(min_align - 1);
2050 if (layout != TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) {
2052 * This leads to all kinds of problems with nested structs, so only
2053 * enable it when a MONO_DEBUG property is set.
2055 * For small structs, set min_align to at least the struct size to improve
2056 * performance, and since the JIT memset/memcpy code assumes this and generates
2057 * unaligned accesses otherwise. See #78990 for a testcase.
2059 if (mono_align_small_structs && top) {
2060 if (instance_size <= sizeof (MonoObject) + sizeof (gpointer))
2061 min_align = MAX (min_align, instance_size - sizeof (MonoObject));
2065 if (klass->byval_arg.type == MONO_TYPE_VAR || klass->byval_arg.type == MONO_TYPE_MVAR)
2066 instance_size = sizeof (MonoObject) + mono_type_stack_size_internal (&klass->byval_arg, NULL, TRUE);
2067 else if (klass->byval_arg.type == MONO_TYPE_PTR)
2068 instance_size = sizeof (MonoObject) + sizeof (gpointer);
2070 /* Publish the data */
2071 mono_loader_lock ();
2072 if (klass->instance_size && !klass->image->dynamic) {
2073 /* Might be already set using cached info */
2074 g_assert (klass->instance_size == instance_size);
2076 klass->instance_size = instance_size;
2078 klass->blittable = blittable;
2079 klass->has_references = has_references;
2080 klass->packing_size = packing_size;
2081 klass->min_align = min_align;
2082 for (i = 0; i < top; ++i) {
2083 field = &klass->fields [i];
2084 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC))
2085 klass->fields [i].offset = field_offsets [i];
2088 mono_memory_barrier ();
2089 klass->size_inited = 1;
2090 mono_loader_unlock ();
2093 * Compute static field layout and size
2094 * Static fields can reference the class itself, so this has to be
2095 * done after instance_size etc. are initialized.
2098 for (i = 0; i < top; i++) {
2102 field = &klass->fields [i];
2104 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC) || field->type->attrs & FIELD_ATTRIBUTE_LITERAL)
2106 if (mono_field_is_deleted (field))
2109 if (mono_type_has_exceptions (field->type)) {
2110 mono_class_set_type_load_failure (klass, "Field '%s' has an invalid type.", field->name);
2114 has_static_fields = TRUE;
2116 size = mono_type_size (field->type, &align);
2117 field_offsets [i] = class_size;
2118 /*align is always non-zero here*/
2119 field_offsets [i] += align - 1;
2120 field_offsets [i] &= ~(align - 1);
2121 class_size = field_offsets [i] + size;
2124 if (has_static_fields && class_size == 0)
2125 /* Simplify code which depends on class_size != 0 if the class has static fields */
2128 /* Compute klass->has_static_refs */
2129 has_static_refs = FALSE;
2130 for (i = 0; i < top; i++) {
2133 field = &klass->fields [i];
2135 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC) {
2136 ftype = mono_type_get_underlying_type (field->type);
2137 ftype = mono_type_get_basic_type_from_generic (ftype);
2138 if (type_has_references (klass, ftype))
2139 has_static_refs = TRUE;
2143 /*valuetypes can't be neither bigger than 1Mb or empty. */
2144 if (klass->valuetype && (klass->instance_size <= 0 || klass->instance_size > (0x100000 + sizeof (MonoObject))))
2145 mono_class_set_type_load_failure (klass, "Value type instance size (%d) cannot be zero, negative, or bigger than 1Mb", klass->instance_size);
2147 /* Publish the data */
2148 mono_loader_lock ();
2150 klass->sizes.class_size = class_size;
2151 klass->has_static_refs = has_static_refs;
2152 for (i = 0; i < top; ++i) {
2153 field = &klass->fields [i];
2155 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
2156 field->offset = field_offsets [i];
2159 mono_memory_barrier ();
2160 klass->fields_inited = 1;
2161 mono_loader_unlock ();
2163 g_free (field_offsets);
2167 create_array_method (MonoClass *klass, const char *name, MonoMethodSignature *sig)
2171 method = (MonoMethod *) mono_image_alloc0 (klass->image, sizeof (MonoMethodPInvoke));
2172 method->klass = klass;
2173 method->flags = METHOD_ATTRIBUTE_PUBLIC;
2174 method->iflags = METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL;
2175 method->signature = sig;
2176 method->name = name;
2179 if (name [0] == '.') {
2180 method->flags |= METHOD_ATTRIBUTE_RT_SPECIAL_NAME | METHOD_ATTRIBUTE_SPECIAL_NAME;
2182 method->iflags |= METHOD_IMPL_ATTRIBUTE_RUNTIME;
2188 * mono_class_setup_methods:
2191 * Initializes the 'methods' array in CLASS.
2192 * Calling this method should be avoided if possible since it allocates a lot
2193 * of long-living MonoMethod structures.
2194 * Methods belonging to an interface are assigned a sequential slot starting
2197 * On failure this function sets klass->has_failure and stores a MonoErrorBoxed with details
2200 mono_class_setup_methods (MonoClass *klass)
2203 MonoMethod **methods;
2208 if (klass->generic_class) {
2210 MonoClass *gklass = klass->generic_class->container_class;
2212 mono_class_init (gklass);
2213 if (!mono_class_has_failure (gklass))
2214 mono_class_setup_methods (gklass);
2215 if (mono_class_set_type_load_failure_causedby_class (klass, gklass, "Generic type definition failed to load"))
2218 /* The + 1 makes this always non-NULL to pass the check in mono_class_setup_methods () */
2219 count = gklass->method.count;
2220 methods = (MonoMethod **)mono_class_alloc0 (klass, sizeof (MonoMethod*) * (count + 1));
2222 for (i = 0; i < count; i++) {
2223 methods [i] = mono_class_inflate_generic_method_full_checked (
2224 gklass->methods [i], klass, mono_class_get_context (klass), &error);
2225 if (!mono_error_ok (&error)) {
2226 char *method = mono_method_full_name (gklass->methods [i], TRUE);
2227 mono_class_set_type_load_failure (klass, "Could not inflate method %s due to %s", method, mono_error_get_message (&error));
2230 mono_error_cleanup (&error);
2234 } else if (klass->rank) {
2236 MonoMethod *amethod;
2237 MonoMethodSignature *sig;
2238 int count_generic = 0, first_generic = 0;
2240 gboolean jagged_ctor = FALSE;
2242 count = 3 + (klass->rank > 1? 2: 1);
2244 mono_class_setup_interfaces (klass, &error);
2245 g_assert (mono_error_ok (&error)); /*FIXME can this fail for array types?*/
2247 if (klass->rank == 1 && klass->element_class->rank) {
2249 klass->method.count ++;
2252 if (klass->interface_count) {
2253 count_generic = generic_array_methods (klass);
2254 first_generic = count;
2255 count += klass->interface_count * count_generic;
2258 methods = (MonoMethod **)mono_class_alloc0 (klass, sizeof (MonoMethod*) * count);
2260 sig = mono_metadata_signature_alloc (klass->image, klass->rank);
2261 sig->ret = &mono_defaults.void_class->byval_arg;
2262 sig->pinvoke = TRUE;
2263 sig->hasthis = TRUE;
2264 for (i = 0; i < klass->rank; ++i)
2265 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2267 amethod = create_array_method (klass, ".ctor", sig);
2268 methods [method_num++] = amethod;
2269 if (klass->rank > 1) {
2270 sig = mono_metadata_signature_alloc (klass->image, klass->rank * 2);
2271 sig->ret = &mono_defaults.void_class->byval_arg;
2272 sig->pinvoke = TRUE;
2273 sig->hasthis = TRUE;
2274 for (i = 0; i < klass->rank * 2; ++i)
2275 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2277 amethod = create_array_method (klass, ".ctor", sig);
2278 methods [method_num++] = amethod;
2282 /* Jagged arrays have an extra ctor in .net which creates an array of arrays */
2283 sig = mono_metadata_signature_alloc (klass->image, klass->rank + 1);
2284 sig->ret = &mono_defaults.void_class->byval_arg;
2285 sig->pinvoke = TRUE;
2286 sig->hasthis = TRUE;
2287 for (i = 0; i < klass->rank + 1; ++i)
2288 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2289 amethod = create_array_method (klass, ".ctor", sig);
2290 methods [method_num++] = amethod;
2293 /* element Get (idx11, [idx2, ...]) */
2294 sig = mono_metadata_signature_alloc (klass->image, klass->rank);
2295 sig->ret = &klass->element_class->byval_arg;
2296 sig->pinvoke = TRUE;
2297 sig->hasthis = TRUE;
2298 for (i = 0; i < klass->rank; ++i)
2299 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2300 amethod = create_array_method (klass, "Get", sig);
2301 methods [method_num++] = amethod;
2302 /* element& Address (idx11, [idx2, ...]) */
2303 sig = mono_metadata_signature_alloc (klass->image, klass->rank);
2304 sig->ret = &klass->element_class->this_arg;
2305 sig->pinvoke = TRUE;
2306 sig->hasthis = TRUE;
2307 for (i = 0; i < klass->rank; ++i)
2308 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2309 amethod = create_array_method (klass, "Address", sig);
2310 methods [method_num++] = amethod;
2311 /* void Set (idx11, [idx2, ...], element) */
2312 sig = mono_metadata_signature_alloc (klass->image, klass->rank + 1);
2313 sig->ret = &mono_defaults.void_class->byval_arg;
2314 sig->pinvoke = TRUE;
2315 sig->hasthis = TRUE;
2316 for (i = 0; i < klass->rank; ++i)
2317 sig->params [i] = &mono_defaults.int32_class->byval_arg;
2318 sig->params [i] = &klass->element_class->byval_arg;
2319 amethod = create_array_method (klass, "Set", sig);
2320 methods [method_num++] = amethod;
2322 for (i = 0; i < klass->interface_count; i++)
2323 setup_generic_array_ifaces (klass, klass->interfaces [i], methods, first_generic + i * count_generic);
2327 count = klass->method.count;
2328 methods = (MonoMethod **)mono_class_alloc (klass, sizeof (MonoMethod*) * count);
2329 for (i = 0; i < count; ++i) {
2330 int idx = mono_metadata_translate_token_index (klass->image, MONO_TABLE_METHOD, klass->method.first + i + 1);
2331 methods [i] = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | idx, klass, NULL, &error);
2333 mono_class_set_type_load_failure (klass, "Could not load method %d due to %s", i, mono_error_get_message (&error));
2334 mono_error_cleanup (&error);
2339 if (MONO_CLASS_IS_INTERFACE (klass)) {
2341 /*Only assign slots to virtual methods as interfaces are allowed to have static methods.*/
2342 for (i = 0; i < count; ++i) {
2343 if (methods [i]->flags & METHOD_ATTRIBUTE_VIRTUAL)
2344 methods [i]->slot = slot++;
2348 mono_image_lock (klass->image);
2350 if (!klass->methods) {
2351 klass->method.count = count;
2353 /* Needed because of the double-checking locking pattern */
2354 mono_memory_barrier ();
2356 klass->methods = methods;
2359 mono_image_unlock (klass->image);
2363 * mono_class_get_method_by_index:
2365 * Returns klass->methods [index], initializing klass->methods if neccesary.
2367 * LOCKING: Acquires the loader lock.
2370 mono_class_get_method_by_index (MonoClass *klass, int index)
2373 /* Avoid calling setup_methods () if possible */
2374 if (klass->generic_class && !klass->methods) {
2375 MonoClass *gklass = klass->generic_class->container_class;
2378 m = mono_class_inflate_generic_method_full_checked (
2379 gklass->methods [index], klass, mono_class_get_context (klass), &error);
2380 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
2382 * If setup_methods () is called later for this class, no duplicates are created,
2383 * since inflate_generic_method guarantees that only one instance of a method
2384 * is created for each context.
2387 mono_class_setup_methods (klass);
2388 g_assert (m == klass->methods [index]);
2392 mono_class_setup_methods (klass);
2393 if (mono_class_has_failure (klass)) /*FIXME do proper error handling*/
2395 g_assert (index >= 0 && index < klass->method.count);
2396 return klass->methods [index];
2401 * mono_class_get_inflated_method:
2403 * Given an inflated class CLASS and a method METHOD which should be a method of
2404 * CLASS's generic definition, return the inflated method corresponding to METHOD.
2407 mono_class_get_inflated_method (MonoClass *klass, MonoMethod *method)
2409 MonoClass *gklass = klass->generic_class->container_class;
2412 g_assert (method->klass == gklass);
2414 mono_class_setup_methods (gklass);
2415 g_assert (!mono_class_has_failure (gklass)); /*FIXME do proper error handling*/
2417 for (i = 0; i < gklass->method.count; ++i) {
2418 if (gklass->methods [i] == method) {
2419 if (klass->methods) {
2420 return klass->methods [i];
2423 MonoMethod *result = mono_class_inflate_generic_method_full_checked (gklass->methods [i], klass, mono_class_get_context (klass), &error);
2424 g_assert (mono_error_ok (&error)); /* FIXME don't swallow this error */
2434 * mono_class_get_vtable_entry:
2436 * Returns klass->vtable [offset], computing it if neccesary. Returns NULL on failure.
2437 * LOCKING: Acquires the loader lock.
2440 mono_class_get_vtable_entry (MonoClass *klass, int offset)
2444 if (klass->rank == 1) {
2446 * szarrays do not overwrite any methods of Array, so we can avoid
2447 * initializing their vtables in some cases.
2449 mono_class_setup_vtable (klass->parent);
2450 if (offset < klass->parent->vtable_size)
2451 return klass->parent->vtable [offset];
2454 if (klass->generic_class) {
2456 MonoClass *gklass = klass->generic_class->container_class;
2457 mono_class_setup_vtable (gklass);
2458 m = gklass->vtable [offset];
2460 m = mono_class_inflate_generic_method_full_checked (m, klass, mono_class_get_context (klass), &error);
2461 g_assert (mono_error_ok (&error)); /* FIXME don't swallow this error */
2463 mono_class_setup_vtable (klass);
2464 if (mono_class_has_failure (klass))
2466 m = klass->vtable [offset];
2473 * mono_class_get_vtable_size:
2475 * Return the vtable size for KLASS.
2478 mono_class_get_vtable_size (MonoClass *klass)
2480 mono_class_setup_vtable (klass);
2482 return klass->vtable_size;
2486 * mono_class_setup_properties:
2488 * Initialize klass->ext.property and klass->ext.properties.
2490 * This method can fail the class.
2493 mono_class_setup_properties (MonoClass *klass)
2495 guint startm, endm, i, j;
2496 guint32 cols [MONO_PROPERTY_SIZE];
2497 MonoTableInfo *msemt = &klass->image->tables [MONO_TABLE_METHODSEMANTICS];
2498 MonoProperty *properties;
2502 if (klass->ext && klass->ext->properties)
2505 if (klass->generic_class) {
2506 MonoClass *gklass = klass->generic_class->container_class;
2508 mono_class_init (gklass);
2509 mono_class_setup_properties (gklass);
2510 if (mono_class_set_type_load_failure_causedby_class (klass, gklass, "Generic type definition failed to load"))
2513 properties = mono_class_new0 (klass, MonoProperty, gklass->ext->property.count + 1);
2515 for (i = 0; i < gklass->ext->property.count; i++) {
2517 MonoProperty *prop = &properties [i];
2519 *prop = gklass->ext->properties [i];
2522 prop->get = mono_class_inflate_generic_method_full_checked (
2523 prop->get, klass, mono_class_get_context (klass), &error);
2525 prop->set = mono_class_inflate_generic_method_full_checked (
2526 prop->set, klass, mono_class_get_context (klass), &error);
2528 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
2529 prop->parent = klass;
2532 first = gklass->ext->property.first;
2533 count = gklass->ext->property.count;
2535 first = mono_metadata_properties_from_typedef (klass->image, mono_metadata_token_index (klass->type_token) - 1, &last);
2536 count = last - first;
2539 mono_class_setup_methods (klass);
2540 if (mono_class_has_failure (klass))
2544 properties = (MonoProperty *)mono_class_alloc0 (klass, sizeof (MonoProperty) * count);
2545 for (i = first; i < last; ++i) {
2546 mono_metadata_decode_table_row (klass->image, MONO_TABLE_PROPERTY, i, cols, MONO_PROPERTY_SIZE);
2547 properties [i - first].parent = klass;
2548 properties [i - first].attrs = cols [MONO_PROPERTY_FLAGS];
2549 properties [i - first].name = mono_metadata_string_heap (klass->image, cols [MONO_PROPERTY_NAME]);
2551 startm = mono_metadata_methods_from_property (klass->image, i, &endm);
2552 for (j = startm; j < endm; ++j) {
2555 mono_metadata_decode_row (msemt, j, cols, MONO_METHOD_SEMA_SIZE);
2557 if (klass->image->uncompressed_metadata) {
2559 /* It seems like the MONO_METHOD_SEMA_METHOD column needs no remapping */
2560 method = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | cols [MONO_METHOD_SEMA_METHOD], klass, NULL, &error);
2561 mono_error_cleanup (&error); /* FIXME don't swallow this error */
2563 method = klass->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - klass->method.first];
2566 switch (cols [MONO_METHOD_SEMA_SEMANTICS]) {
2567 case METHOD_SEMANTIC_SETTER:
2568 properties [i - first].set = method;
2570 case METHOD_SEMANTIC_GETTER:
2571 properties [i - first].get = method;
2580 mono_class_alloc_ext (klass);
2582 mono_image_lock (klass->image);
2584 if (klass->ext->properties) {
2585 /* We leak 'properties' which was allocated from the image mempool */
2586 mono_image_unlock (klass->image);
2590 klass->ext->property.first = first;
2591 klass->ext->property.count = count;
2593 /* Flush any pending writes as we do double checked locking on klass->ext->properties */
2594 mono_memory_barrier ();
2596 /* Leave this assignment as the last op in the function */
2597 klass->ext->properties = properties;
2599 mono_image_unlock (klass->image);
2603 inflate_method_listz (MonoMethod **methods, MonoClass *klass, MonoGenericContext *context)
2605 MonoMethod **om, **retval;
2608 for (om = methods, count = 0; *om; ++om, ++count)
2611 retval = g_new0 (MonoMethod*, count + 1);
2613 for (om = methods, count = 0; *om; ++om, ++count) {
2615 retval [count] = mono_class_inflate_generic_method_full_checked (*om, klass, context, &error);
2616 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
2622 /*This method can fail the class.*/
2624 mono_class_setup_events (MonoClass *klass)
2627 guint startm, endm, i, j;
2628 guint32 cols [MONO_EVENT_SIZE];
2629 MonoTableInfo *msemt = &klass->image->tables [MONO_TABLE_METHODSEMANTICS];
2633 if (klass->ext && klass->ext->events)
2636 if (klass->generic_class) {
2637 MonoClass *gklass = klass->generic_class->container_class;
2638 MonoGenericContext *context = NULL;
2640 mono_class_setup_events (gklass);
2641 if (mono_class_set_type_load_failure_causedby_class (klass, gklass, "Generic type definition failed to load"))
2644 first = gklass->ext->event.first;
2645 count = gklass->ext->event.count;
2647 events = mono_class_new0 (klass, MonoEvent, count);
2650 context = mono_class_get_context (klass);
2652 for (i = 0; i < count; i++) {
2654 MonoEvent *event = &events [i];
2655 MonoEvent *gevent = &gklass->ext->events [i];
2657 mono_error_init (&error); //since we do conditional calls, we must ensure the default value is ok
2659 event->parent = klass;
2660 event->name = gevent->name;
2661 event->add = gevent->add ? mono_class_inflate_generic_method_full_checked (gevent->add, klass, context, &error) : NULL;
2662 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
2663 event->remove = gevent->remove ? mono_class_inflate_generic_method_full_checked (gevent->remove, klass, context, &error) : NULL;
2664 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
2665 event->raise = gevent->raise ? mono_class_inflate_generic_method_full_checked (gevent->raise, klass, context, &error) : NULL;
2666 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
2668 #ifndef MONO_SMALL_CONFIG
2669 event->other = gevent->other ? inflate_method_listz (gevent->other, klass, context) : NULL;
2671 event->attrs = gevent->attrs;
2674 first = mono_metadata_events_from_typedef (klass->image, mono_metadata_token_index (klass->type_token) - 1, &last);
2675 count = last - first;
2678 mono_class_setup_methods (klass);
2679 if (mono_class_has_failure (klass)) {
2684 events = (MonoEvent *)mono_class_alloc0 (klass, sizeof (MonoEvent) * count);
2685 for (i = first; i < last; ++i) {
2686 MonoEvent *event = &events [i - first];
2688 mono_metadata_decode_table_row (klass->image, MONO_TABLE_EVENT, i, cols, MONO_EVENT_SIZE);
2689 event->parent = klass;
2690 event->attrs = cols [MONO_EVENT_FLAGS];
2691 event->name = mono_metadata_string_heap (klass->image, cols [MONO_EVENT_NAME]);
2693 startm = mono_metadata_methods_from_event (klass->image, i, &endm);
2694 for (j = startm; j < endm; ++j) {
2697 mono_metadata_decode_row (msemt, j, cols, MONO_METHOD_SEMA_SIZE);
2699 if (klass->image->uncompressed_metadata) {
2701 /* It seems like the MONO_METHOD_SEMA_METHOD column needs no remapping */
2702 method = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | cols [MONO_METHOD_SEMA_METHOD], klass, NULL, &error);
2703 mono_error_cleanup (&error); /* FIXME don't swallow this error */
2705 method = klass->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - klass->method.first];
2708 switch (cols [MONO_METHOD_SEMA_SEMANTICS]) {
2709 case METHOD_SEMANTIC_ADD_ON:
2710 event->add = method;
2712 case METHOD_SEMANTIC_REMOVE_ON:
2713 event->remove = method;
2715 case METHOD_SEMANTIC_FIRE:
2716 event->raise = method;
2718 case METHOD_SEMANTIC_OTHER: {
2719 #ifndef MONO_SMALL_CONFIG
2722 if (event->other == NULL) {
2723 event->other = g_new0 (MonoMethod*, 2);
2725 while (event->other [n])
2727 event->other = (MonoMethod **)g_realloc (event->other, (n + 2) * sizeof (MonoMethod*));
2729 event->other [n] = method;
2730 /* NULL terminated */
2731 event->other [n + 1] = NULL;
2742 mono_class_alloc_ext (klass);
2744 mono_image_lock (klass->image);
2746 if (klass->ext->events) {
2747 mono_image_unlock (klass->image);
2751 klass->ext->event.first = first;
2752 klass->ext->event.count = count;
2754 /* Flush any pending writes as we do double checked locking on klass->ext.events */
2755 mono_memory_barrier ();
2757 /* Leave this assignment as the last op in the function */
2758 klass->ext->events = events;
2760 mono_image_unlock (klass->image);
2764 * Global pool of interface IDs, represented as a bitset.
2765 * LOCKING: Protected by the classes lock.
2767 static MonoBitSet *global_interface_bitset = NULL;
2770 * mono_unload_interface_ids:
2771 * @bitset: bit set of interface IDs
2773 * When an image is unloaded, the interface IDs associated with
2774 * the image are put back in the global pool of IDs so the numbers
2778 mono_unload_interface_ids (MonoBitSet *bitset)
2781 mono_bitset_sub (global_interface_bitset, bitset);
2786 mono_unload_interface_id (MonoClass *klass)
2788 if (global_interface_bitset && klass->interface_id) {
2790 mono_bitset_clear (global_interface_bitset, klass->interface_id);
2796 * mono_get_unique_iid:
2799 * Assign a unique integer ID to the interface represented by @class.
2800 * The ID will positive and as small as possible.
2801 * LOCKING: Acquires the classes lock.
2802 * Returns: The new ID.
2805 mono_get_unique_iid (MonoClass *klass)
2809 g_assert (MONO_CLASS_IS_INTERFACE (klass));
2813 if (!global_interface_bitset) {
2814 global_interface_bitset = mono_bitset_new (128, 0);
2817 iid = mono_bitset_find_first_unset (global_interface_bitset, -1);
2819 int old_size = mono_bitset_size (global_interface_bitset);
2820 MonoBitSet *new_set = mono_bitset_clone (global_interface_bitset, old_size * 2);
2821 mono_bitset_free (global_interface_bitset);
2822 global_interface_bitset = new_set;
2825 mono_bitset_set (global_interface_bitset, iid);
2826 /* set the bit also in the per-image set */
2827 if (!klass->generic_class) {
2828 if (klass->image->interface_bitset) {
2829 if (iid >= mono_bitset_size (klass->image->interface_bitset)) {
2830 MonoBitSet *new_set = mono_bitset_clone (klass->image->interface_bitset, iid + 1);
2831 mono_bitset_free (klass->image->interface_bitset);
2832 klass->image->interface_bitset = new_set;
2835 klass->image->interface_bitset = mono_bitset_new (iid + 1, 0);
2837 mono_bitset_set (klass->image->interface_bitset, iid);
2842 #ifndef MONO_SMALL_CONFIG
2843 if (mono_print_vtable) {
2845 char *type_name = mono_type_full_name (&klass->byval_arg);
2846 if (klass->generic_class && !klass->generic_class->context.class_inst->is_open) {
2847 generic_id = klass->generic_class->context.class_inst->id;
2848 g_assert (generic_id != 0);
2852 printf ("Interface: assigned id %d to %s|%s|%d\n", iid, klass->image->name, type_name, generic_id);
2857 g_assert (iid <= 65535);
2862 collect_implemented_interfaces_aux (MonoClass *klass, GPtrArray **res, MonoError *error)
2867 mono_class_setup_interfaces (klass, error);
2868 return_if_nok (error);
2870 for (i = 0; i < klass->interface_count; i++) {
2871 ic = klass->interfaces [i];
2874 *res = g_ptr_array_new ();
2875 g_ptr_array_add (*res, ic);
2876 mono_class_init (ic);
2877 if (mono_class_has_failure (ic)) {
2878 mono_error_set_type_load_class (error, ic, "Error Loading class");
2882 collect_implemented_interfaces_aux (ic, res, error);
2883 return_if_nok (error);
2888 mono_class_get_implemented_interfaces (MonoClass *klass, MonoError *error)
2890 GPtrArray *res = NULL;
2892 collect_implemented_interfaces_aux (klass, &res, error);
2893 if (!mono_error_ok (error)) {
2895 g_ptr_array_free (res, TRUE);
2902 compare_interface_ids (const void *p_key, const void *p_element) {
2903 const MonoClass *key = (const MonoClass *)p_key;
2904 const MonoClass *element = *(const MonoClass **)p_element;
2906 return (key->interface_id - element->interface_id);
2909 /*FIXME verify all callers if they should switch to mono_class_interface_offset_with_variance*/
2911 mono_class_interface_offset (MonoClass *klass, MonoClass *itf) {
2912 MonoClass **result = (MonoClass **)mono_binary_search (
2914 klass->interfaces_packed,
2915 klass->interface_offsets_count,
2916 sizeof (MonoClass *),
2917 compare_interface_ids);
2919 return klass->interface_offsets_packed [result - (klass->interfaces_packed)];
2926 * mono_class_interface_offset_with_variance:
2928 * Return the interface offset of @itf in @klass. Sets @non_exact_match to TRUE if the match required variance check
2929 * If @itf is an interface with generic variant arguments, try to find the compatible one.
2931 * Note that this function is responsible for resolving ambiguities. Right now we use whatever ordering interfaces_packed gives us.
2933 * FIXME figure out MS disambiguation rules and fix this function.
2936 mono_class_interface_offset_with_variance (MonoClass *klass, MonoClass *itf, gboolean *non_exact_match) {
2937 int i = mono_class_interface_offset (klass, itf);
2938 *non_exact_match = FALSE;
2942 if (!mono_class_has_variant_generic_params (itf))
2945 for (i = 0; i < klass->interface_offsets_count; i++) {
2946 if (mono_class_is_variant_compatible (itf, klass->interfaces_packed [i], FALSE)) {
2947 *non_exact_match = TRUE;
2948 return klass->interface_offsets_packed [i];
2956 print_implemented_interfaces (MonoClass *klass) {
2959 GPtrArray *ifaces = NULL;
2961 int ancestor_level = 0;
2963 name = mono_type_get_full_name (klass);
2964 printf ("Packed interface table for class %s has size %d\n", name, klass->interface_offsets_count);
2967 for (i = 0; i < klass->interface_offsets_count; i++)
2968 printf (" [%03d][UUID %03d][SLOT %03d][SIZE %03d] interface %s.%s\n", i,
2969 klass->interfaces_packed [i]->interface_id,
2970 klass->interface_offsets_packed [i],
2971 klass->interfaces_packed [i]->method.count,
2972 klass->interfaces_packed [i]->name_space,
2973 klass->interfaces_packed [i]->name );
2974 printf ("Interface flags: ");
2975 for (i = 0; i <= klass->max_interface_id; i++)
2976 if (MONO_CLASS_IMPLEMENTS_INTERFACE (klass, i))
2977 printf ("(%d,T)", i);
2979 printf ("(%d,F)", i);
2981 printf ("Dump interface flags:");
2982 #ifdef COMPRESSED_INTERFACE_BITMAP
2984 const uint8_t* p = klass->interface_bitmap;
2985 i = klass->max_interface_id;
2987 printf (" %d x 00 %02X", p [0], p [1]);
2993 for (i = 0; i < ((((klass->max_interface_id + 1) >> 3)) + (((klass->max_interface_id + 1) & 7)? 1 :0)); i++)
2994 printf (" %02X", klass->interface_bitmap [i]);
2997 while (klass != NULL) {
2998 printf ("[LEVEL %d] Implemented interfaces by class %s:\n", ancestor_level, klass->name);
2999 ifaces = mono_class_get_implemented_interfaces (klass, &error);
3000 if (!mono_error_ok (&error)) {
3001 printf (" Type failed due to %s\n", mono_error_get_message (&error));
3002 mono_error_cleanup (&error);
3003 } else if (ifaces) {
3004 for (i = 0; i < ifaces->len; i++) {
3005 MonoClass *ic = (MonoClass *)g_ptr_array_index (ifaces, i);
3006 printf (" [UIID %d] interface %s\n", ic->interface_id, ic->name);
3007 printf (" [%03d][UUID %03d][SLOT %03d][SIZE %03d] interface %s.%s\n", i,
3009 mono_class_interface_offset (klass, ic),
3014 g_ptr_array_free (ifaces, TRUE);
3017 klass = klass->parent;
3022 inflate_class_one_arg (MonoClass *gtype, MonoClass *arg0)
3025 args [0] = &arg0->byval_arg;
3027 return mono_class_bind_generic_parameters (gtype, 1, args, FALSE);
3031 array_class_get_if_rank (MonoClass *klass, guint rank)
3033 return rank ? mono_array_class_get (klass, rank) : klass;
3037 fill_valuetype_array_derived_types (MonoClass **valuetype_types, MonoClass *eclass, int rank)
3039 valuetype_types [0] = eclass;
3040 if (eclass == mono_defaults.int16_class)
3041 valuetype_types [1] = mono_defaults.uint16_class;
3042 else if (eclass == mono_defaults.uint16_class)
3043 valuetype_types [1] = mono_defaults.int16_class;
3044 else if (eclass == mono_defaults.int32_class)
3045 valuetype_types [1] = mono_defaults.uint32_class;
3046 else if (eclass == mono_defaults.uint32_class)
3047 valuetype_types [1] = mono_defaults.int32_class;
3048 else if (eclass == mono_defaults.int64_class)
3049 valuetype_types [1] = mono_defaults.uint64_class;
3050 else if (eclass == mono_defaults.uint64_class)
3051 valuetype_types [1] = mono_defaults.int64_class;
3052 else if (eclass == mono_defaults.byte_class)
3053 valuetype_types [1] = mono_defaults.sbyte_class;
3054 else if (eclass == mono_defaults.sbyte_class)
3055 valuetype_types [1] = mono_defaults.byte_class;
3056 else if (eclass->enumtype && mono_class_enum_basetype (eclass))
3057 valuetype_types [1] = mono_class_from_mono_type (mono_class_enum_basetype (eclass));
3060 /* this won't be needed once bug #325495 is completely fixed
3061 * though we'll need something similar to know which interfaces to allow
3062 * in arrays when they'll be lazyly created
3064 * FIXME: System.Array/InternalEnumerator don't need all this interface fabrication machinery.
3065 * MS returns diferrent types based on which instance is called. For example:
3066 * object obj = new byte[10][];
3067 * Type a = ((IEnumerable<byte[]>)obj).GetEnumerator ().GetType ();
3068 * Type b = ((IEnumerable<IList<byte>>)obj).GetEnumerator ().GetType ();
3071 * Fixing this should kill quite some code, save some bits and improve compatibility.
3074 get_implicit_generic_array_interfaces (MonoClass *klass, int *num, int *is_enumerator)
3076 MonoClass *eclass = klass->element_class;
3077 static MonoClass* generic_icollection_class = NULL;
3078 static MonoClass* generic_ienumerable_class = NULL;
3079 static MonoClass* generic_ienumerator_class = NULL;
3080 static MonoClass* generic_ireadonlylist_class = NULL;
3081 static MonoClass* generic_ireadonlycollection_class = NULL;
3082 MonoClass *valuetype_types[2] = { NULL, NULL };
3083 MonoClass **interfaces = NULL;
3084 int i, nifaces, interface_count, real_count, original_rank;
3086 gboolean internal_enumerator;
3087 gboolean eclass_is_valuetype;
3089 if (!mono_defaults.generic_ilist_class) {
3093 internal_enumerator = FALSE;
3094 eclass_is_valuetype = FALSE;
3095 original_rank = eclass->rank;
3096 if (klass->byval_arg.type != MONO_TYPE_SZARRAY) {
3097 if (klass->generic_class && klass->nested_in == mono_defaults.array_class && strcmp (klass->name, "InternalEnumerator`1") == 0) {
3099 * For a Enumerator<T[]> we need to get the list of interfaces for T.
3101 eclass = mono_class_from_mono_type (klass->generic_class->context.class_inst->type_argv [0]);
3102 original_rank = eclass->rank;
3104 eclass = eclass->element_class;
3105 internal_enumerator = TRUE;
3106 *is_enumerator = TRUE;
3114 * with this non-lazy impl we can't implement all the interfaces so we do just the minimal stuff
3115 * for deep levels of arrays of arrays (string[][] has all the interfaces, string[][][] doesn't)
3117 all_interfaces = eclass->rank && eclass->element_class->rank? FALSE: TRUE;
3119 if (!generic_icollection_class) {
3120 generic_icollection_class = mono_class_load_from_name (mono_defaults.corlib,
3121 "System.Collections.Generic", "ICollection`1");
3122 generic_ienumerable_class = mono_class_load_from_name (mono_defaults.corlib,
3123 "System.Collections.Generic", "IEnumerable`1");
3124 generic_ienumerator_class = mono_class_load_from_name (mono_defaults.corlib,
3125 "System.Collections.Generic", "IEnumerator`1");
3126 generic_ireadonlylist_class = mono_class_load_from_name (mono_defaults.corlib,
3127 "System.Collections.Generic", "IReadOnlyList`1");
3128 generic_ireadonlycollection_class = mono_class_load_from_name (mono_defaults.corlib,
3129 "System.Collections.Generic", "IReadOnlyCollection`1");
3132 mono_class_init (eclass);
3135 * Arrays in 2.0 need to implement a number of generic interfaces
3136 * (IList`1, ICollection`1, IEnumerable`1 for a number of types depending
3137 * on the element class). For net 4.5, we also need to implement IReadOnlyList`1/IReadOnlyCollection`1.
3138 * We collect the types needed to build the
3139 * instantiations in interfaces at intervals of 3/5, because 3/5 are
3140 * the generic interfaces needed to implement.
3142 * On 4.5, as an optimization, we don't expand ref classes for the variant generic interfaces
3143 * (IEnumerator, IReadOnlyList and IReadOnlyColleciton). The regular dispatch code can handle those cases.
3145 if (eclass->valuetype) {
3146 nifaces = generic_ireadonlylist_class ? 5 : 3;
3147 fill_valuetype_array_derived_types (valuetype_types, eclass, original_rank);
3149 /* IList, ICollection, IEnumerable, IReadOnlyList`1 */
3150 real_count = interface_count = valuetype_types [1] ? (nifaces * 2) : nifaces;
3151 if (internal_enumerator) {
3153 if (valuetype_types [1])
3157 interfaces = (MonoClass **)g_malloc0 (sizeof (MonoClass*) * real_count);
3158 interfaces [0] = valuetype_types [0];
3159 if (valuetype_types [1])
3160 interfaces [nifaces] = valuetype_types [1];
3162 eclass_is_valuetype = TRUE;
3165 int idepth = eclass->idepth;
3166 if (!internal_enumerator)
3168 nifaces = generic_ireadonlylist_class ? 2 : 3;
3170 // FIXME: This doesn't seem to work/required for generic params
3171 if (!(eclass->this_arg.type == MONO_TYPE_VAR || eclass->this_arg.type == MONO_TYPE_MVAR || (image_is_dynamic (eclass->image) && !eclass->wastypebuilder)))
3172 mono_class_setup_interface_offsets (eclass);
3174 interface_count = all_interfaces? eclass->interface_offsets_count: eclass->interface_count;
3175 /* we add object for interfaces and the supertypes for the other
3176 * types. The last of the supertypes is the element class itself which we
3177 * already created the explicit interfaces for (so we include it for IEnumerator
3178 * and exclude it for arrays).
3180 if (MONO_CLASS_IS_INTERFACE (eclass))
3183 interface_count += idepth;
3184 if (eclass->rank && eclass->element_class->valuetype) {
3185 fill_valuetype_array_derived_types (valuetype_types, eclass->element_class, original_rank);
3186 if (valuetype_types [1])
3189 /* IList, ICollection, IEnumerable, IReadOnlyList */
3190 interface_count *= nifaces;
3191 real_count = interface_count;
3192 if (internal_enumerator) {
3193 real_count += (MONO_CLASS_IS_INTERFACE (eclass) ? 1 : idepth) + eclass->interface_offsets_count;
3194 if (valuetype_types [1])
3197 interfaces = (MonoClass **)g_malloc0 (sizeof (MonoClass*) * real_count);
3198 if (MONO_CLASS_IS_INTERFACE (eclass)) {
3199 interfaces [0] = mono_defaults.object_class;
3203 for (i = 0; i < idepth; i++) {
3204 mono_class_init (eclass->supertypes [i]);
3205 interfaces [j] = eclass->supertypes [i];
3209 if (all_interfaces) {
3210 for (i = 0; i < eclass->interface_offsets_count; i++) {
3211 interfaces [j] = eclass->interfaces_packed [i];
3215 for (i = 0; i < eclass->interface_count; i++) {
3216 interfaces [j] = eclass->interfaces [i];
3220 if (valuetype_types [1]) {
3221 interfaces [j] = array_class_get_if_rank (valuetype_types [1], original_rank);
3226 /* instantiate the generic interfaces */
3227 for (i = 0; i < interface_count; i += nifaces) {
3228 MonoClass *iface = interfaces [i];
3230 interfaces [i + 0] = inflate_class_one_arg (mono_defaults.generic_ilist_class, iface);
3231 interfaces [i + 1] = inflate_class_one_arg (generic_icollection_class, iface);
3233 if (eclass->valuetype) {
3234 interfaces [i + 2] = inflate_class_one_arg (generic_ienumerable_class, iface);
3235 if (generic_ireadonlylist_class) {
3236 interfaces [i + 3] = inflate_class_one_arg (generic_ireadonlylist_class, iface);
3237 interfaces [i + 4] = inflate_class_one_arg (generic_ireadonlycollection_class, iface);
3240 if (!generic_ireadonlylist_class)
3241 interfaces [i + 2] = inflate_class_one_arg (generic_ienumerable_class, iface);
3244 if (internal_enumerator) {
3246 /* instantiate IEnumerator<iface> */
3247 for (i = 0; i < interface_count; i++) {
3248 interfaces [i] = inflate_class_one_arg (generic_ienumerator_class, interfaces [i]);
3250 j = interface_count;
3251 if (!eclass_is_valuetype) {
3252 if (MONO_CLASS_IS_INTERFACE (eclass)) {
3253 interfaces [j] = inflate_class_one_arg (generic_ienumerator_class, mono_defaults.object_class);
3256 for (i = 0; i < eclass->idepth; i++) {
3257 interfaces [j] = inflate_class_one_arg (generic_ienumerator_class, eclass->supertypes [i]);
3261 for (i = 0; i < eclass->interface_offsets_count; i++) {
3262 interfaces [j] = inflate_class_one_arg (generic_ienumerator_class, eclass->interfaces_packed [i]);
3266 interfaces [j++] = inflate_class_one_arg (generic_ienumerator_class, array_class_get_if_rank (valuetype_types [0], original_rank));
3268 if (valuetype_types [1])
3269 interfaces [j] = inflate_class_one_arg (generic_ienumerator_class, array_class_get_if_rank (valuetype_types [1], original_rank));
3273 char *type_name = mono_type_get_name_full (&klass->byval_arg, 0);
3274 for (i = 0; i < real_count; ++i) {
3275 char *name = mono_type_get_name_full (&interfaces [i]->byval_arg, 0);
3276 g_print ("%s implements %s\n", type_name, name);
3287 find_array_interface (MonoClass *klass, const char *name)
3290 for (i = 0; i < klass->interface_count; ++i) {
3291 if (strcmp (klass->interfaces [i]->name, name) == 0)
3298 * Return the number of virtual methods.
3299 * Even for interfaces we can't simply return the number of methods as all CLR types are allowed to have static methods.
3300 * Return -1 on failure.
3301 * FIXME It would be nice if this information could be cached somewhere.
3304 count_virtual_methods (MonoClass *klass)
3308 klass = mono_class_get_generic_type_definition (klass); /*We can find this information by looking at the GTD*/
3310 if (klass->methods || !MONO_CLASS_HAS_STATIC_METADATA (klass)) {
3311 mono_class_setup_methods (klass);
3312 if (mono_class_has_failure (klass))
3315 for (i = 0; i < klass->method.count; ++i) {
3316 flags = klass->methods [i]->flags;
3317 if (flags & METHOD_ATTRIBUTE_VIRTUAL)
3321 for (i = 0; i < klass->method.count; ++i) {
3322 flags = mono_metadata_decode_table_row_col (klass->image, MONO_TABLE_METHOD, klass->method.first + i, MONO_METHOD_FLAGS);
3324 if (flags & METHOD_ATTRIBUTE_VIRTUAL)
3332 find_interface (int num_ifaces, MonoClass **interfaces_full, MonoClass *ic)
3340 m = (l + num_ifaces) / 2;
3341 if (interfaces_full [m] == ic)
3343 if (l == num_ifaces)
3345 if (!interfaces_full [m] || interfaces_full [m]->interface_id > ic->interface_id) {
3354 find_interface_offset (int num_ifaces, MonoClass **interfaces_full, int *interface_offsets_full, MonoClass *ic)
3356 int i = find_interface (num_ifaces, interfaces_full, ic);
3358 return interface_offsets_full [i];
3363 set_interface_and_offset (int num_ifaces, MonoClass **interfaces_full, int *interface_offsets_full, MonoClass *ic, int offset, mono_bool force_set)
3365 int i = find_interface (num_ifaces, interfaces_full, ic);
3369 interface_offsets_full [i] = offset;
3372 for (i = 0; i < num_ifaces; ++i) {
3373 if (interfaces_full [i]) {
3375 if (interfaces_full [i]->interface_id < ic->interface_id)
3378 while (end < num_ifaces && interfaces_full [end]) end++;
3379 memmove (interfaces_full + i + 1, interfaces_full + i, sizeof (MonoClass*) * (end - i));
3380 memmove (interface_offsets_full + i + 1, interface_offsets_full + i, sizeof (int) * (end - i));
3382 interfaces_full [i] = ic;
3383 interface_offsets_full [i] = offset;
3389 #ifdef COMPRESSED_INTERFACE_BITMAP
3392 * Compressed interface bitmap design.
3394 * Interface bitmaps take a large amount of memory, because their size is
3395 * linear with the maximum interface id assigned in the process (each interface
3396 * is assigned a unique id as it is loaded). The number of interface classes
3397 * is high because of the many implicit interfaces implemented by arrays (we'll
3398 * need to lazy-load them in the future).
3399 * Most classes implement a very small number of interfaces, so the bitmap is
3400 * sparse. This bitmap needs to be checked by interface casts, so access to the
3401 * needed bit must be fast and doable with few jit instructions.
3403 * The current compression format is as follows:
3404 * *) it is a sequence of one or more two-byte elements
3405 * *) the first byte in the element is the count of empty bitmap bytes
3406 * at the current bitmap position
3407 * *) the second byte in the element is an actual bitmap byte at the current
3410 * As an example, the following compressed bitmap bytes:
3411 * 0x07 0x01 0x00 0x7
3412 * correspond to the following bitmap:
3413 * 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x01 0x07
3415 * Each two-byte element can represent up to 2048 bitmap bits, but as few as a single
3416 * bitmap byte for non-sparse sequences. In practice the interface bitmaps created
3417 * during a gmcs bootstrap are reduced to less tha 5% of the original size.
3421 * mono_compress_bitmap:
3422 * @dest: destination buffer
3423 * @bitmap: bitmap buffer
3424 * @size: size of @bitmap in bytes
3426 * This is a mono internal function.
3427 * The @bitmap data is compressed into a format that is small but
3428 * still searchable in few instructions by the JIT and runtime.
3429 * The compressed data is stored in the buffer pointed to by the
3430 * @dest array. Passing a #NULL value for @dest allows to just compute
3431 * the size of the buffer.
3432 * This compression algorithm assumes the bits set in the bitmap are
3433 * few and far between, like in interface bitmaps.
3434 * Returns: The size of the compressed bitmap in bytes.
3437 mono_compress_bitmap (uint8_t *dest, const uint8_t *bitmap, int size)
3441 const uint8_t *end = bitmap + size;
3442 while (bitmap < end) {
3443 if (*bitmap || numz == 255) {
3467 * mono_class_interface_match:
3468 * @bitmap: a compressed bitmap buffer
3469 * @id: the index to check in the bitmap
3471 * This is a mono internal function.
3472 * Checks if a bit is set in a compressed interface bitmap. @id must
3473 * be already checked for being smaller than the maximum id encoded in the
3476 * Returns: A non-zero value if bit @id is set in the bitmap @bitmap,
3480 mono_class_interface_match (const uint8_t *bitmap, int id)
3483 id -= bitmap [0] * 8;
3487 return bitmap [1] & (1 << id);
3496 * LOCKING: this is supposed to be called with the loader lock held.
3497 * Return -1 on failure and set klass->has_failure and store a MonoErrorBoxed with the details.
3500 setup_interface_offsets (MonoClass *klass, int cur_slot, gboolean overwrite)
3504 int i, j, max_iid, num_ifaces;
3505 MonoClass **interfaces_full = NULL;
3506 int *interface_offsets_full = NULL;
3508 GPtrArray **ifaces_array = NULL;
3509 int interface_offsets_count;
3510 MonoClass **array_interfaces = NULL;
3511 int num_array_interfaces;
3512 int is_enumerator = FALSE;
3514 mono_class_setup_supertypes (klass);
3516 * get the implicit generic interfaces for either the arrays or for System.Array/InternalEnumerator<T>
3517 * implicit interfaces have the property that they are assigned the same slot in the
3518 * vtables for compatible interfaces
3520 array_interfaces = get_implicit_generic_array_interfaces (klass, &num_array_interfaces, &is_enumerator);
3522 /* compute maximum number of slots and maximum interface id */
3524 num_ifaces = num_array_interfaces; /* this can include duplicated ones */
3525 ifaces_array = g_new0 (GPtrArray *, klass->idepth);
3526 for (j = 0; j < klass->idepth; j++) {
3527 k = klass->supertypes [j];
3528 num_ifaces += k->interface_count;
3529 for (i = 0; i < k->interface_count; i++) {
3530 ic = k->interfaces [i];
3533 mono_class_init (ic);
3535 if (max_iid < ic->interface_id)
3536 max_iid = ic->interface_id;
3538 ifaces = mono_class_get_implemented_interfaces (k, &error);
3539 if (!mono_error_ok (&error)) {
3540 char *name = mono_type_get_full_name (k);
3541 mono_class_set_type_load_failure (klass, "Error getting the interfaces of %s due to %s", name, mono_error_get_message (&error));
3543 mono_error_cleanup (&error);
3548 num_ifaces += ifaces->len;
3549 for (i = 0; i < ifaces->len; ++i) {
3550 ic = (MonoClass *)g_ptr_array_index (ifaces, i);
3551 if (max_iid < ic->interface_id)
3552 max_iid = ic->interface_id;
3554 ifaces_array [j] = ifaces;
3558 for (i = 0; i < num_array_interfaces; ++i) {
3559 ic = array_interfaces [i];
3560 mono_class_init (ic);
3561 if (max_iid < ic->interface_id)
3562 max_iid = ic->interface_id;
3565 if (MONO_CLASS_IS_INTERFACE (klass)) {
3567 if (max_iid < klass->interface_id)
3568 max_iid = klass->interface_id;
3570 klass->max_interface_id = max_iid;
3571 /* compute vtable offset for interfaces */
3572 interfaces_full = (MonoClass **)g_malloc0 (sizeof (MonoClass*) * num_ifaces);
3573 interface_offsets_full = (int *)g_malloc (sizeof (int) * num_ifaces);
3575 for (i = 0; i < num_ifaces; i++) {
3576 interface_offsets_full [i] = -1;
3579 /* skip the current class */
3580 for (j = 0; j < klass->idepth - 1; j++) {
3581 k = klass->supertypes [j];
3582 ifaces = ifaces_array [j];
3585 for (i = 0; i < ifaces->len; ++i) {
3587 ic = (MonoClass *)g_ptr_array_index (ifaces, i);
3589 /*Force the sharing of interface offsets between parent and subtypes.*/
3590 io = mono_class_interface_offset (k, ic);
3592 set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, ic, io, TRUE);
3597 g_assert (klass == klass->supertypes [klass->idepth - 1]);
3598 ifaces = ifaces_array [klass->idepth - 1];
3600 for (i = 0; i < ifaces->len; ++i) {
3602 ic = (MonoClass *)g_ptr_array_index (ifaces, i);
3603 if (set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, ic, cur_slot, FALSE))
3605 count = count_virtual_methods (ic);
3607 char *name = mono_type_get_full_name (ic);
3608 mono_class_set_type_load_failure (klass, "Error calculating interface offset of %s", name);
3617 if (MONO_CLASS_IS_INTERFACE (klass))
3618 set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, klass, cur_slot, TRUE);
3620 if (num_array_interfaces) {
3621 if (is_enumerator) {
3622 int ienumerator_idx = find_array_interface (klass, "IEnumerator`1");
3623 int ienumerator_offset = find_interface_offset (num_ifaces, interfaces_full, interface_offsets_full, klass->interfaces [ienumerator_idx]);
3624 g_assert (ienumerator_offset >= 0);
3625 for (i = 0; i < num_array_interfaces; ++i) {
3626 ic = array_interfaces [i];
3627 if (strcmp (ic->name, "IEnumerator`1") == 0)
3628 set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, ic, ienumerator_offset, TRUE);
3630 g_assert_not_reached ();
3631 /*g_print ("type %s has %s offset at %d (%s)\n", klass->name, ic->name, interface_offsets_full [ic->interface_id], klass->interfaces [0]->name);*/
3634 int ilist_offset, icollection_offset, ienumerable_offset, ireadonlylist_offset, ireadonlycollection_offset;
3635 int ilist_iface_idx = find_array_interface (klass, "IList`1");
3636 MonoClass* ilist_class = klass->interfaces [ilist_iface_idx];
3637 int ireadonlylist_iface_idx = find_array_interface (klass, "IReadOnlyList`1");
3638 MonoClass* ireadonlylist_class = ireadonlylist_iface_idx != -1 ? klass->interfaces [ireadonlylist_iface_idx] : NULL;
3639 int icollection_iface_idx = find_array_interface (ilist_class, "ICollection`1");
3640 int ienumerable_iface_idx = find_array_interface (ilist_class, "IEnumerable`1");
3641 int ireadonlycollection_iface_idx = ireadonlylist_iface_idx != -1 ? find_array_interface (ireadonlylist_class, "IReadOnlyCollection`1") : -1;
3642 ilist_offset = find_interface_offset (num_ifaces, interfaces_full, interface_offsets_full, klass->interfaces [ilist_iface_idx]);
3643 icollection_offset = find_interface_offset (num_ifaces, interfaces_full, interface_offsets_full, ilist_class->interfaces [icollection_iface_idx]);
3644 ienumerable_offset = find_interface_offset (num_ifaces, interfaces_full, interface_offsets_full, ilist_class->interfaces [ienumerable_iface_idx]);
3645 ireadonlylist_offset = ireadonlylist_iface_idx != -1 ? find_interface_offset (num_ifaces, interfaces_full, interface_offsets_full, klass->interfaces [ireadonlylist_iface_idx]) : -1;
3646 ireadonlycollection_offset = ireadonlycollection_iface_idx != -1 ? find_interface_offset (num_ifaces, interfaces_full, interface_offsets_full, ireadonlylist_class->interfaces [ireadonlycollection_iface_idx]) : -1;
3647 g_assert (ilist_offset >= 0 && icollection_offset >= 0 && ienumerable_offset >= 0);
3648 for (i = 0; i < num_array_interfaces; ++i) {
3650 ic = array_interfaces [i];
3651 if (ic->generic_class->container_class == mono_defaults.generic_ilist_class)
3652 offset = ilist_offset;
3653 else if (strcmp (ic->name, "ICollection`1") == 0)
3654 offset = icollection_offset;
3655 else if (strcmp (ic->name, "IEnumerable`1") == 0)
3656 offset = ienumerable_offset;
3657 else if (strcmp (ic->name, "IReadOnlyList`1") == 0)
3658 offset = ireadonlylist_offset;
3659 else if (strcmp (ic->name, "IReadOnlyCollection`1") == 0)
3660 offset = ireadonlycollection_offset;
3662 g_assert_not_reached ();
3663 set_interface_and_offset (num_ifaces, interfaces_full, interface_offsets_full, ic, offset, TRUE);
3664 /*g_print ("type %s has %s offset at %d (%s)\n", klass->name, ic->name, offset, klass->interfaces [0]->name);*/
3669 for (interface_offsets_count = 0, i = 0; i < num_ifaces; i++) {
3670 if (interface_offsets_full [i] != -1) {
3671 interface_offsets_count ++;
3676 * We might get called multiple times:
3677 * - mono_class_init ()
3678 * - mono_class_setup_vtable ().
3679 * - mono_class_setup_interface_offsets ().
3680 * mono_class_setup_interface_offsets () passes 0 as CUR_SLOT, so the computed interface offsets will be invalid. This
3681 * means we have to overwrite those when called from other places (#4440).
3683 if (klass->interfaces_packed) {
3685 g_assert (klass->interface_offsets_count == interface_offsets_count);
3689 klass->interface_offsets_count = interface_offsets_count;
3690 klass->interfaces_packed = (MonoClass **)mono_class_alloc (klass, sizeof (MonoClass*) * interface_offsets_count);
3691 klass->interface_offsets_packed = (guint16 *)mono_class_alloc (klass, sizeof (guint16) * interface_offsets_count);
3692 bsize = (sizeof (guint8) * ((max_iid + 1) >> 3)) + (((max_iid + 1) & 7)? 1 :0);
3693 #ifdef COMPRESSED_INTERFACE_BITMAP
3694 bitmap = g_malloc0 (bsize);
3696 bitmap = (uint8_t *)mono_class_alloc0 (klass, bsize);
3698 for (i = 0; i < interface_offsets_count; i++) {
3699 int id = interfaces_full [i]->interface_id;
3700 bitmap [id >> 3] |= (1 << (id & 7));
3701 klass->interfaces_packed [i] = interfaces_full [i];
3702 klass->interface_offsets_packed [i] = interface_offsets_full [i];
3703 /*if (num_array_interfaces)
3704 g_print ("type %s has %s offset at %d\n", mono_type_get_name_full (&klass->byval_arg, 0), mono_type_get_name_full (&interfaces_full [i]->byval_arg, 0), interface_offsets_full [i]);*/
3706 #ifdef COMPRESSED_INTERFACE_BITMAP
3707 i = mono_compress_bitmap (NULL, bitmap, bsize);
3708 klass->interface_bitmap = mono_class_alloc0 (klass, i);
3709 mono_compress_bitmap (klass->interface_bitmap, bitmap, bsize);
3712 klass->interface_bitmap = bitmap;
3717 g_free (interfaces_full);
3718 g_free (interface_offsets_full);
3719 g_free (array_interfaces);
3720 for (i = 0; i < klass->idepth; i++) {
3721 ifaces = ifaces_array [i];
3723 g_ptr_array_free (ifaces, TRUE);
3725 g_free (ifaces_array);
3727 //printf ("JUST DONE: ");
3728 //print_implemented_interfaces (klass);
3734 * Setup interface offsets for interfaces.
3736 * - klass->max_interface_id
3737 * - klass->interface_offsets_count
3738 * - klass->interfaces_packed
3739 * - klass->interface_offsets_packed
3740 * - klass->interface_bitmap
3742 * This function can fail @class.
3745 mono_class_setup_interface_offsets (MonoClass *klass)
3747 mono_loader_lock ();
3749 setup_interface_offsets (klass, 0, FALSE);
3751 mono_loader_unlock ();
3754 /*Checks if @klass has @parent as one of it's parents type gtd
3758 * Bar<T> : Foo<Bar<Bar<T>>>
3762 mono_class_has_gtd_parent (MonoClass *klass, MonoClass *parent)
3764 klass = mono_class_get_generic_type_definition (klass);
3765 parent = mono_class_get_generic_type_definition (parent);
3766 mono_class_setup_supertypes (klass);
3767 mono_class_setup_supertypes (parent);
3769 return klass->idepth >= parent->idepth &&
3770 mono_class_get_generic_type_definition (klass->supertypes [parent->idepth - 1]) == parent;
3774 mono_class_check_vtable_constraints (MonoClass *klass, GList *in_setup)
3776 MonoGenericInst *ginst;
3778 if (!klass->generic_class) {
3779 mono_class_setup_vtable_full (klass, in_setup);
3780 return !mono_class_has_failure (klass);
3783 mono_class_setup_vtable_full (mono_class_get_generic_type_definition (klass), in_setup);
3784 if (mono_class_set_type_load_failure_causedby_class (klass, klass->generic_class->container_class, "Failed to load generic definition vtable"))
3787 ginst = klass->generic_class->context.class_inst;
3788 for (i = 0; i < ginst->type_argc; ++i) {
3790 if (ginst->type_argv [i]->type != MONO_TYPE_GENERICINST)
3792 arg = mono_class_from_mono_type (ginst->type_argv [i]);
3793 /*Those 2 will be checked by mono_class_setup_vtable itself*/
3794 if (mono_class_has_gtd_parent (klass, arg) || mono_class_has_gtd_parent (arg, klass))
3796 if (!mono_class_check_vtable_constraints (arg, in_setup)) {
3797 mono_class_set_type_load_failure (klass, "Failed to load generic parameter %d", i);
3805 * mono_class_setup_vtable:
3807 * Creates the generic vtable of CLASS.
3808 * Initializes the following fields in MonoClass:
3811 * Plus all the fields initialized by setup_interface_offsets ().
3812 * If there is an error during vtable construction, klass->has_failure
3813 * is set and details are stored in a MonoErrorBoxed.
3815 * LOCKING: Acquires the loader lock.
3818 mono_class_setup_vtable (MonoClass *klass)
3820 mono_class_setup_vtable_full (klass, NULL);
3824 mono_class_setup_vtable_full (MonoClass *klass, GList *in_setup)
3827 MonoMethod **overrides;
3828 MonoGenericContext *context;
3836 if (MONO_CLASS_IS_INTERFACE (klass)) {
3837 /* This sets method->slot for all methods if this is an interface */
3838 mono_class_setup_methods (klass);
3842 if (mono_class_has_failure (klass))
3845 if (g_list_find (in_setup, klass))
3848 mono_loader_lock ();
3850 if (klass->vtable) {
3851 mono_loader_unlock ();
3855 mono_stats.generic_vtable_count ++;
3856 in_setup = g_list_prepend (in_setup, klass);
3858 if (klass->generic_class) {
3859 if (!mono_class_check_vtable_constraints (klass, in_setup)) {
3860 mono_loader_unlock ();
3861 g_list_remove (in_setup, klass);
3865 context = mono_class_get_context (klass);
3866 type_token = klass->generic_class->container_class->type_token;
3868 context = (MonoGenericContext *) klass->generic_container;
3869 type_token = klass->type_token;
3872 if (image_is_dynamic (klass->image)) {
3873 /* Generic instances can have zero method overrides without causing any harm.
3874 * This is true since we don't do layout all over again for them, we simply inflate
3875 * the layout of the parent.
3877 mono_reflection_get_dynamic_overrides (klass, &overrides, &onum, &error);
3878 if (!is_ok (&error)) {
3879 mono_loader_unlock ();
3880 g_list_remove (in_setup, klass);
3881 mono_class_set_type_load_failure (klass, "Could not load list of method overrides due to %s", mono_error_get_message (&error));
3882 mono_error_cleanup (&error);
3886 /* The following call fails if there are missing methods in the type */
3887 /* FIXME it's probably a good idea to avoid this for generic instances. */
3888 ok = mono_class_get_overrides_full (klass->image, type_token, &overrides, &onum, context);
3892 mono_class_setup_vtable_general (klass, overrides, onum, in_setup);
3894 mono_class_set_type_load_failure (klass, "Could not load list of method overrides");
3898 mono_loader_unlock ();
3899 g_list_remove (in_setup, klass);
3904 #define DEBUG_INTERFACE_VTABLE_CODE 0
3905 #define TRACE_INTERFACE_VTABLE_CODE 0
3906 #define VERIFY_INTERFACE_VTABLE_CODE 0
3907 #define VTABLE_SELECTOR (1)
3909 #if (TRACE_INTERFACE_VTABLE_CODE|DEBUG_INTERFACE_VTABLE_CODE)
3910 #define DEBUG_INTERFACE_VTABLE(stmt) do {\
3911 if (!(VTABLE_SELECTOR)) break; \
3915 #define DEBUG_INTERFACE_VTABLE(stmt)
3918 #if TRACE_INTERFACE_VTABLE_CODE
3919 #define TRACE_INTERFACE_VTABLE(stmt) do {\
3920 if (!(VTABLE_SELECTOR)) break; \
3924 #define TRACE_INTERFACE_VTABLE(stmt)
3927 #if VERIFY_INTERFACE_VTABLE_CODE
3928 #define VERIFY_INTERFACE_VTABLE(stmt) do {\
3929 if (!(VTABLE_SELECTOR)) break; \
3933 #define VERIFY_INTERFACE_VTABLE(stmt)
3937 #if (TRACE_INTERFACE_VTABLE_CODE|DEBUG_INTERFACE_VTABLE_CODE)
3939 mono_signature_get_full_desc (MonoMethodSignature *sig, gboolean include_namespace)
3943 GString *res = g_string_new ("");
3945 g_string_append_c (res, '(');
3946 for (i = 0; i < sig->param_count; ++i) {
3948 g_string_append_c (res, ',');
3949 mono_type_get_desc (res, sig->params [i], include_namespace);
3951 g_string_append (res, ")=>");
3952 if (sig->ret != NULL) {
3953 mono_type_get_desc (res, sig->ret, include_namespace);
3955 g_string_append (res, "NULL");
3958 g_string_free (res, FALSE);
3962 print_method_signatures (MonoMethod *im, MonoMethod *cm) {
3963 char *im_sig = mono_signature_get_full_desc (mono_method_signature (im), TRUE);
3964 char *cm_sig = mono_signature_get_full_desc (mono_method_signature (cm), TRUE);
3965 printf ("(IM \"%s\", CM \"%s\")", im_sig, cm_sig);
3973 is_wcf_hack_disabled (void)
3975 static gboolean disabled;
3976 static gboolean inited = FALSE;
3978 disabled = g_getenv ("MONO_DISABLE_WCF_HACK") != NULL;
3985 check_interface_method_override (MonoClass *klass, MonoMethod *im, MonoMethod *cm, gboolean require_newslot, gboolean interface_is_explicitly_implemented_by_class, gboolean slot_is_empty)
3987 MonoMethodSignature *cmsig, *imsig;
3988 if (strcmp (im->name, cm->name) == 0) {
3989 if (! (cm->flags & METHOD_ATTRIBUTE_PUBLIC)) {
3990 TRACE_INTERFACE_VTABLE (printf ("[PUBLIC CHECK FAILED]"));
3993 if (! slot_is_empty) {
3994 if (require_newslot) {
3995 if (! interface_is_explicitly_implemented_by_class) {
3996 TRACE_INTERFACE_VTABLE (printf ("[NOT EXPLICIT IMPLEMENTATION IN FULL SLOT REFUSED]"));
3999 if (! (cm->flags & METHOD_ATTRIBUTE_NEW_SLOT)) {
4000 TRACE_INTERFACE_VTABLE (printf ("[NEWSLOT CHECK FAILED]"));
4004 TRACE_INTERFACE_VTABLE (printf ("[FULL SLOT REFUSED]"));
4007 cmsig = mono_method_signature (cm);
4008 imsig = mono_method_signature (im);
4009 if (!cmsig || !imsig) {
4010 mono_class_set_type_load_failure (klass, "Could not resolve the signature of a virtual method");
4014 if (! mono_metadata_signature_equal (cmsig, imsig)) {
4015 TRACE_INTERFACE_VTABLE (printf ("[SIGNATURE CHECK FAILED "));
4016 TRACE_INTERFACE_VTABLE (print_method_signatures (im, cm));
4017 TRACE_INTERFACE_VTABLE (printf ("]"));
4020 TRACE_INTERFACE_VTABLE (printf ("[SECURITY CHECKS]"));
4021 if (mono_security_core_clr_enabled ())
4022 mono_security_core_clr_check_override (klass, cm, im);
4024 TRACE_INTERFACE_VTABLE (printf ("[NAME CHECK OK]"));
4025 if (is_wcf_hack_disabled () && !mono_method_can_access_method_full (cm, im, NULL)) {
4026 char *body_name = mono_method_full_name (cm, TRUE);
4027 char *decl_name = mono_method_full_name (im, TRUE);
4028 mono_class_set_type_load_failure (klass, "Method %s overrides method '%s' which is not accessible", body_name, decl_name);
4036 MonoClass *ic = im->klass;
4037 const char *ic_name_space = ic->name_space;
4038 const char *ic_name = ic->name;
4041 if (! require_newslot) {
4042 TRACE_INTERFACE_VTABLE (printf ("[INJECTED METHOD REFUSED]"));
4045 if (cm->klass->rank == 0) {
4046 TRACE_INTERFACE_VTABLE (printf ("[RANK CHECK FAILED]"));
4049 cmsig = mono_method_signature (cm);
4050 imsig = mono_method_signature (im);
4051 if (!cmsig || !imsig) {
4052 mono_class_set_type_load_failure (klass, "Could not resolve the signature of a virtual method");
4056 if (! mono_metadata_signature_equal (cmsig, imsig)) {
4057 TRACE_INTERFACE_VTABLE (printf ("[(INJECTED) SIGNATURE CHECK FAILED "));
4058 TRACE_INTERFACE_VTABLE (print_method_signatures (im, cm));
4059 TRACE_INTERFACE_VTABLE (printf ("]"));
4062 if (mono_class_get_image (ic) != mono_defaults.corlib) {
4063 TRACE_INTERFACE_VTABLE (printf ("[INTERFACE CORLIB CHECK FAILED]"));
4066 if ((ic_name_space == NULL) || (strcmp (ic_name_space, "System.Collections.Generic") != 0)) {
4067 TRACE_INTERFACE_VTABLE (printf ("[INTERFACE NAMESPACE CHECK FAILED]"));
4070 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))) {
4071 TRACE_INTERFACE_VTABLE (printf ("[INTERFACE NAME CHECK FAILED]"));
4075 subname = strstr (cm->name, ic_name_space);
4076 if (subname != cm->name) {
4077 TRACE_INTERFACE_VTABLE (printf ("[ACTUAL NAMESPACE CHECK FAILED]"));
4080 subname += strlen (ic_name_space);
4081 if (subname [0] != '.') {
4082 TRACE_INTERFACE_VTABLE (printf ("[FIRST DOT CHECK FAILED]"));
4086 if (strstr (subname, ic_name) != subname) {
4087 TRACE_INTERFACE_VTABLE (printf ("[ACTUAL CLASS NAME CHECK FAILED]"));
4090 subname += strlen (ic_name);
4091 if (subname [0] != '.') {
4092 TRACE_INTERFACE_VTABLE (printf ("[SECOND DOT CHECK FAILED]"));
4096 if (strcmp (subname, im->name) != 0) {
4097 TRACE_INTERFACE_VTABLE (printf ("[METHOD NAME CHECK FAILED]"));
4101 TRACE_INTERFACE_VTABLE (printf ("[SECURITY CHECKS (INJECTED CASE)]"));
4102 if (mono_security_core_clr_enabled ())
4103 mono_security_core_clr_check_override (klass, cm, im);
4105 TRACE_INTERFACE_VTABLE (printf ("[INJECTED INTERFACE CHECK OK]"));
4106 if (is_wcf_hack_disabled () && !mono_method_can_access_method_full (cm, im, NULL)) {
4107 char *body_name = mono_method_full_name (cm, TRUE);
4108 char *decl_name = mono_method_full_name (im, TRUE);
4109 mono_class_set_type_load_failure (klass, "Method %s overrides method '%s' which is not accessible", body_name, decl_name);
4119 #if (TRACE_INTERFACE_VTABLE_CODE|DEBUG_INTERFACE_VTABLE_CODE)
4121 foreach_override (gpointer key, gpointer value, gpointer user_data) {
4122 MonoMethod *method = key;
4123 MonoMethod *override = value;
4124 MonoClass *method_class = mono_method_get_class (method);
4125 MonoClass *override_class = mono_method_get_class (override);
4127 printf (" Method '%s.%s:%s' has override '%s.%s:%s'\n",
4128 mono_class_get_namespace (method_class), mono_class_get_name (method_class), mono_method_get_name (method),
4129 mono_class_get_namespace (override_class), mono_class_get_name (override_class), mono_method_get_name (override));
4132 print_overrides (GHashTable *override_map, const char *message) {
4134 printf ("Override map \"%s\" START:\n", message);
4135 g_hash_table_foreach (override_map, foreach_override, NULL);
4136 printf ("Override map \"%s\" END.\n", message);
4138 printf ("Override map \"%s\" EMPTY.\n", message);
4142 print_vtable_full (MonoClass *klass, MonoMethod** vtable, int size, int first_non_interface_slot, const char *message, gboolean print_interfaces) {
4143 char *full_name = mono_type_full_name (&klass->byval_arg);
4147 printf ("*** Vtable for class '%s' at \"%s\" (size %d)\n", full_name, message, size);
4149 if (print_interfaces) {
4150 print_implemented_interfaces (klass);
4151 printf ("* Interfaces for class '%s' done.\nStarting vtable (size %d):\n", full_name, size);
4154 if (klass->parent) {
4155 parent_size = klass->parent->vtable_size;
4159 for (i = 0; i < size; ++i) {
4160 MonoMethod *cm = vtable [i];
4161 char *cm_name = cm ? mono_method_full_name (cm, TRUE) : g_strdup ("nil");
4162 char newness = (i < parent_size) ? 'O' : ((i < first_non_interface_slot) ? 'I' : 'N');
4164 printf (" [%c][%03d][INDEX %03d] %s [%p]\n", newness, i, cm ? cm->slot : - 1, cm_name, cm);
4172 #if VERIFY_INTERFACE_VTABLE_CODE
4174 mono_method_try_get_vtable_index (MonoMethod *method)
4176 if (method->is_inflated && (method->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
4177 MonoMethodInflated *imethod = (MonoMethodInflated*)method;
4178 if (imethod->declaring->is_generic)
4179 return imethod->declaring->slot;
4181 return method->slot;
4185 mono_class_verify_vtable (MonoClass *klass)
4188 char *full_name = mono_type_full_name (&klass->byval_arg);
4190 printf ("*** Verifying VTable of class '%s' \n", full_name);
4194 if (!klass->methods)
4197 for (i = 0; i < klass->method.count; ++i) {
4198 MonoMethod *cm = klass->methods [i];
4201 if (!(cm->flags & METHOD_ATTRIBUTE_VIRTUAL))
4205 full_name = mono_method_full_name (cm, TRUE);
4207 slot = mono_method_try_get_vtable_index (cm);
4209 if (slot >= klass->vtable_size) {
4210 printf ("\tInvalid method %s at index %d with vtable of length %d\n", full_name, slot, klass->vtable_size);
4214 if (slot >= 0 && klass->vtable [slot] != cm && (klass->vtable [slot])) {
4215 char *other_name = klass->vtable [slot] ? mono_method_full_name (klass->vtable [slot], TRUE) : g_strdup ("[null value]");
4216 printf ("\tMethod %s has slot %d but vtable has %s on it\n", full_name, slot, other_name);
4217 g_free (other_name);
4220 printf ("\tVirtual method %s does n't have an assigned slot\n", full_name);
4227 print_unimplemented_interface_method_info (MonoClass *klass, MonoClass *ic, MonoMethod *im, int im_slot, MonoMethod **overrides, int onum) {
4229 char *method_signature;
4232 for (index = 0; index < onum; ++index) {
4233 mono_trace_warning (MONO_TRACE_TYPE, " at slot %d: %s (%d) overrides %s (%d)\n", im_slot, overrides [index*2+1]->name,
4234 overrides [index*2+1]->slot, overrides [index*2]->name, overrides [index*2]->slot);
4236 method_signature = mono_signature_get_desc (mono_method_signature (im), FALSE);
4237 type_name = mono_type_full_name (&klass->byval_arg);
4238 mono_trace_warning (MONO_TRACE_TYPE, "no implementation for interface method %s::%s(%s) in class %s\n",
4239 mono_type_get_name (&ic->byval_arg), im->name, method_signature, type_name);
4240 g_free (method_signature);
4242 mono_class_setup_methods (klass);
4243 if (mono_class_has_failure (klass)) {
4244 char *name = mono_type_get_full_name (klass);
4245 mono_trace_warning (MONO_TRACE_TYPE, "CLASS %s failed to resolve methods\n", name);
4249 for (index = 0; index < klass->method.count; ++index) {
4250 MonoMethod *cm = klass->methods [index];
4251 method_signature = mono_signature_get_desc (mono_method_signature (cm), TRUE);
4253 mono_trace_warning (MONO_TRACE_TYPE, "METHOD %s(%s)\n", cm->name, method_signature);
4254 g_free (method_signature);
4259 mono_method_get_method_definition (MonoMethod *method)
4261 while (method->is_inflated)
4262 method = ((MonoMethodInflated*)method)->declaring;
4267 verify_class_overrides (MonoClass *klass, MonoMethod **overrides, int onum)
4271 for (i = 0; i < onum; ++i) {
4272 MonoMethod *decl = overrides [i * 2];
4273 MonoMethod *body = overrides [i * 2 + 1];
4275 if (mono_class_get_generic_type_definition (body->klass) != mono_class_get_generic_type_definition (klass)) {
4276 mono_class_set_type_load_failure (klass, "Method belongs to a different class than the declared one");
4280 if (!(body->flags & METHOD_ATTRIBUTE_VIRTUAL) || (body->flags & METHOD_ATTRIBUTE_STATIC)) {
4281 if (body->flags & METHOD_ATTRIBUTE_STATIC)
4282 mono_class_set_type_load_failure (klass, "Method must not be static to override a base type");
4284 mono_class_set_type_load_failure (klass, "Method must be virtual to override a base type");
4288 if (!(decl->flags & METHOD_ATTRIBUTE_VIRTUAL) || (decl->flags & METHOD_ATTRIBUTE_STATIC)) {
4289 if (body->flags & METHOD_ATTRIBUTE_STATIC)
4290 mono_class_set_type_load_failure (klass, "Cannot override a static method in a base type");
4292 mono_class_set_type_load_failure (klass, "Cannot override a non virtual method in a base type");
4296 if (!mono_class_is_assignable_from_slow (decl->klass, klass)) {
4297 mono_class_set_type_load_failure (klass, "Method overrides a class or interface that is not extended or implemented by this type");
4301 body = mono_method_get_method_definition (body);
4302 decl = mono_method_get_method_definition (decl);
4304 if (is_wcf_hack_disabled () && !mono_method_can_access_method_full (body, decl, NULL)) {
4305 char *body_name = mono_method_full_name (body, TRUE);
4306 char *decl_name = mono_method_full_name (decl, TRUE);
4307 mono_class_set_type_load_failure (klass, "Method %s overrides method '%s' which is not accessible", body_name, decl_name);
4317 mono_class_need_stelemref_method (MonoClass *klass)
4319 return klass->rank == 1 && MONO_TYPE_IS_REFERENCE (&klass->element_class->byval_arg);
4323 * LOCKING: this is supposed to be called with the loader lock held.
4326 mono_class_setup_vtable_general (MonoClass *klass, MonoMethod **overrides, int onum, GList *in_setup)
4330 MonoMethod **vtable;
4331 int i, max_vtsize = 0, max_iid, cur_slot = 0;
4332 GPtrArray *ifaces = NULL;
4333 GHashTable *override_map = NULL;
4335 #if (DEBUG_INTERFACE_VTABLE_CODE|TRACE_INTERFACE_VTABLE_CODE)
4336 int first_non_interface_slot;
4338 GSList *virt_methods = NULL, *l;
4339 int stelemref_slot = 0;
4344 if (overrides && !verify_class_overrides (klass, overrides, onum))
4347 ifaces = mono_class_get_implemented_interfaces (klass, &error);
4348 if (!mono_error_ok (&error)) {
4349 char *name = mono_type_get_full_name (klass);
4350 mono_class_set_type_load_failure (klass, "Could not resolve %s interfaces due to %s", name, mono_error_get_message (&error));
4352 mono_error_cleanup (&error);
4354 } else if (ifaces) {
4355 for (i = 0; i < ifaces->len; i++) {
4356 MonoClass *ic = (MonoClass *)g_ptr_array_index (ifaces, i);
4357 max_vtsize += ic->method.count;
4359 g_ptr_array_free (ifaces, TRUE);
4363 if (klass->parent) {
4364 mono_class_init (klass->parent);
4365 mono_class_setup_vtable_full (klass->parent, in_setup);
4367 if (mono_class_set_type_load_failure_causedby_class (klass, klass->parent, "Parent class failed to load"))
4370 max_vtsize += klass->parent->vtable_size;
4371 cur_slot = klass->parent->vtable_size;
4374 max_vtsize += klass->method.count;
4376 /*Array have a slot for stelemref*/
4377 if (mono_class_need_stelemref_method (klass)) {
4378 stelemref_slot = cur_slot;
4383 vtable = (MonoMethod **)alloca (sizeof (gpointer) * max_vtsize);
4384 memset (vtable, 0, sizeof (gpointer) * max_vtsize);
4386 /* printf ("METAINIT %s.%s\n", klass->name_space, klass->name); */
4388 cur_slot = setup_interface_offsets (klass, cur_slot, TRUE);
4389 if (cur_slot == -1) /*setup_interface_offsets fails the type.*/
4392 max_iid = klass->max_interface_id;
4393 DEBUG_INTERFACE_VTABLE (first_non_interface_slot = cur_slot);
4395 /* Optimized version for generic instances */
4396 if (klass->generic_class) {
4398 MonoClass *gklass = klass->generic_class->container_class;
4401 mono_class_setup_vtable_full (gklass, in_setup);
4402 if (mono_class_set_type_load_failure_causedby_class (klass, gklass, "Could not load generic definition"))
4405 tmp = (MonoMethod **)mono_class_alloc0 (klass, sizeof (gpointer) * gklass->vtable_size);
4406 klass->vtable_size = gklass->vtable_size;
4407 for (i = 0; i < gklass->vtable_size; ++i)
4408 if (gklass->vtable [i]) {
4409 MonoMethod *inflated = mono_class_inflate_generic_method_full_checked (gklass->vtable [i], klass, mono_class_get_context (klass), &error);
4410 if (!mono_error_ok (&error)) {
4411 mono_class_set_type_load_failure (klass, "Could not inflate method due to %s", mono_error_get_message (&error));
4412 mono_error_cleanup (&error);
4416 tmp [i]->slot = gklass->vtable [i]->slot;
4418 mono_memory_barrier ();
4419 klass->vtable = tmp;
4421 /* Have to set method->slot for abstract virtual methods */
4422 if (klass->methods && gklass->methods) {
4423 for (i = 0; i < klass->method.count; ++i)
4424 if (klass->methods [i]->slot == -1)
4425 klass->methods [i]->slot = gklass->methods [i]->slot;
4431 if (klass->parent && klass->parent->vtable_size) {
4432 MonoClass *parent = klass->parent;
4435 memcpy (vtable, parent->vtable, sizeof (gpointer) * parent->vtable_size);
4437 // Also inherit parent interface vtables, just as a starting point.
4438 // This is needed otherwise bug-77127.exe fails when the property methods
4439 // have different names in the iterface and the class, because for child
4440 // classes the ".override" information is not used anymore.
4441 for (i = 0; i < parent->interface_offsets_count; i++) {
4442 MonoClass *parent_interface = parent->interfaces_packed [i];
4443 int interface_offset = mono_class_interface_offset (klass, parent_interface);
4444 /*FIXME this is now dead code as this condition will never hold true.
4445 Since interface offsets are inherited then the offset of an interface implemented
4446 by a parent will never be the out of it's vtable boundary.
4448 if (interface_offset >= parent->vtable_size) {
4449 int parent_interface_offset = mono_class_interface_offset (parent, parent_interface);
4452 mono_class_setup_methods (parent_interface); /*FIXME Just kill this whole chunk of dead code*/
4453 TRACE_INTERFACE_VTABLE (printf (" +++ Inheriting interface %s.%s\n", parent_interface->name_space, parent_interface->name));
4454 for (j = 0; j < parent_interface->method.count && !mono_class_has_failure (klass); j++) {
4455 vtable [interface_offset + j] = parent->vtable [parent_interface_offset + j];
4456 TRACE_INTERFACE_VTABLE (printf (" --- Inheriting: [%03d][(%03d)+(%03d)] => [%03d][(%03d)+(%03d)]\n",
4457 parent_interface_offset + j, parent_interface_offset, j,
4458 interface_offset + j, interface_offset, j));
4465 /*Array have a slot for stelemref*/
4466 if (mono_class_need_stelemref_method (klass)) {
4467 MonoMethod *method = mono_marshal_get_virtual_stelemref (klass);
4469 method->slot = stelemref_slot;
4471 g_assert (method->slot == stelemref_slot);
4473 vtable [stelemref_slot] = method;
4476 TRACE_INTERFACE_VTABLE (print_vtable_full (klass, vtable, cur_slot, first_non_interface_slot, "AFTER INHERITING PARENT VTABLE", TRUE));
4477 /* override interface methods */
4478 for (i = 0; i < onum; i++) {
4479 MonoMethod *decl = overrides [i*2];
4480 if (MONO_CLASS_IS_INTERFACE (decl->klass)) {
4482 dslot = mono_method_get_vtable_slot (decl);
4484 mono_class_set_type_load_failure (klass, "");
4488 dslot += mono_class_interface_offset (klass, decl->klass);
4489 vtable [dslot] = overrides [i*2 + 1];
4490 vtable [dslot]->slot = dslot;
4492 override_map = g_hash_table_new (mono_aligned_addr_hash, NULL);
4494 g_hash_table_insert (override_map, overrides [i * 2], overrides [i * 2 + 1]);
4496 if (mono_security_core_clr_enabled ())
4497 mono_security_core_clr_check_override (klass, vtable [dslot], decl);
4500 TRACE_INTERFACE_VTABLE (print_overrides (override_map, "AFTER OVERRIDING INTERFACE METHODS"));
4501 TRACE_INTERFACE_VTABLE (print_vtable_full (klass, vtable, cur_slot, first_non_interface_slot, "AFTER OVERRIDING INTERFACE METHODS", FALSE));
4504 * Create a list of virtual methods to avoid calling
4505 * mono_class_get_virtual_methods () which is slow because of the metadata
4509 gpointer iter = NULL;
4512 virt_methods = NULL;
4513 while ((cm = mono_class_get_virtual_methods (klass, &iter))) {
4514 virt_methods = g_slist_prepend (virt_methods, cm);
4516 if (mono_class_has_failure (klass))
4520 // Loop on all implemented interfaces...
4521 for (i = 0; i < klass->interface_offsets_count; i++) {
4522 MonoClass *parent = klass->parent;
4524 gboolean interface_is_explicitly_implemented_by_class;
4527 ic = klass->interfaces_packed [i];
4528 ic_offset = mono_class_interface_offset (klass, ic);
4530 mono_class_setup_methods (ic);
4531 if (mono_class_has_failure (ic))
4534 // Check if this interface is explicitly implemented (instead of just inherited)
4535 if (parent != NULL) {
4536 int implemented_interfaces_index;
4537 interface_is_explicitly_implemented_by_class = FALSE;
4538 for (implemented_interfaces_index = 0; implemented_interfaces_index < klass->interface_count; implemented_interfaces_index++) {
4539 if (ic == klass->interfaces [implemented_interfaces_index]) {
4540 interface_is_explicitly_implemented_by_class = TRUE;
4545 interface_is_explicitly_implemented_by_class = TRUE;
4548 // Loop on all interface methods...
4549 for (im_index = 0; im_index < ic->method.count; im_index++) {
4550 MonoMethod *im = ic->methods [im_index];
4551 int im_slot = ic_offset + im->slot;
4552 MonoMethod *override_im = (override_map != NULL) ? (MonoMethod *)g_hash_table_lookup (override_map, im) : NULL;
4554 if (im->flags & METHOD_ATTRIBUTE_STATIC)
4557 TRACE_INTERFACE_VTABLE (printf ("\tchecking iface method %s\n", mono_method_full_name (im,1)));
4559 // If there is an explicit implementation, just use it right away,
4560 // otherwise look for a matching method
4561 if (override_im == NULL) {
4565 // First look for a suitable method among the class methods
4566 for (l = virt_methods; l; l = l->next) {
4567 cm = (MonoMethod *)l->data;
4568 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)));
4569 if (check_interface_method_override (klass, im, cm, TRUE, interface_is_explicitly_implemented_by_class, (vtable [im_slot] == NULL))) {
4570 TRACE_INTERFACE_VTABLE (printf ("[check ok]: ASSIGNING"));
4571 vtable [im_slot] = cm;
4572 /* Why do we need this? */
4577 TRACE_INTERFACE_VTABLE (printf ("\n"));
4578 if (mono_class_has_failure (klass)) /*Might be set by check_interface_method_override*/
4582 // If the slot is still empty, look in all the inherited virtual methods...
4583 if ((vtable [im_slot] == NULL) && klass->parent != NULL) {
4584 MonoClass *parent = klass->parent;
4585 // Reverse order, so that last added methods are preferred
4586 for (cm_index = parent->vtable_size - 1; cm_index >= 0; cm_index--) {
4587 MonoMethod *cm = parent->vtable [cm_index];
4589 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));
4590 if ((cm != NULL) && check_interface_method_override (klass, im, cm, FALSE, FALSE, TRUE)) {
4591 TRACE_INTERFACE_VTABLE (printf ("[everything ok]: ASSIGNING"));
4592 vtable [im_slot] = cm;
4593 /* Why do we need this? */
4599 if (mono_class_has_failure (klass)) /*Might be set by check_interface_method_override*/
4601 TRACE_INTERFACE_VTABLE ((cm != NULL) && printf ("\n"));
4605 g_assert (vtable [im_slot] == override_im);
4610 // If the class is not abstract, check that all its interface slots are full.
4611 // The check is done here and not directly at the end of the loop above because
4612 // it can happen (for injected generic array interfaces) that the same slot is
4613 // processed multiple times (those interfaces have overlapping slots), and it
4614 // will not always be the first pass the one that fills the slot.
4615 if (! (klass->flags & TYPE_ATTRIBUTE_ABSTRACT)) {
4616 for (i = 0; i < klass->interface_offsets_count; i++) {
4620 ic = klass->interfaces_packed [i];
4621 ic_offset = mono_class_interface_offset (klass, ic);
4623 for (im_index = 0; im_index < ic->method.count; im_index++) {
4624 MonoMethod *im = ic->methods [im_index];
4625 int im_slot = ic_offset + im->slot;
4627 if (im->flags & METHOD_ATTRIBUTE_STATIC)
4630 TRACE_INTERFACE_VTABLE (printf (" [class is not abstract, checking slot %d for interface '%s'.'%s', method %s, slot check is %d]\n",
4631 im_slot, ic->name_space, ic->name, im->name, (vtable [im_slot] == NULL)));
4632 if (vtable [im_slot] == NULL) {
4633 print_unimplemented_interface_method_info (klass, ic, im, im_slot, overrides, onum);
4640 TRACE_INTERFACE_VTABLE (print_vtable_full (klass, vtable, cur_slot, first_non_interface_slot, "AFTER SETTING UP INTERFACE METHODS", FALSE));
4641 for (l = virt_methods; l; l = l->next) {
4642 cm = (MonoMethod *)l->data;
4644 * If the method is REUSE_SLOT, we must check in the
4645 * base class for a method to override.
4647 if (!(cm->flags & METHOD_ATTRIBUTE_NEW_SLOT)) {
4649 for (k = klass->parent; k ; k = k->parent) {
4654 while ((m1 = mono_class_get_virtual_methods (k, &k_iter))) {
4655 MonoMethodSignature *cmsig, *m1sig;
4657 cmsig = mono_method_signature (cm);
4658 m1sig = mono_method_signature (m1);
4660 if (!cmsig || !m1sig) {
4661 /* FIXME proper error message */
4662 mono_class_set_type_load_failure (klass, "");
4666 if (!strcmp(cm->name, m1->name) &&
4667 mono_metadata_signature_equal (cmsig, m1sig)) {
4669 if (mono_security_core_clr_enabled ())
4670 mono_security_core_clr_check_override (klass, cm, m1);
4672 slot = mono_method_get_vtable_slot (m1);
4676 if (is_wcf_hack_disabled () && !mono_method_can_access_method_full (cm, m1, NULL)) {
4677 char *body_name = mono_method_full_name (cm, TRUE);
4678 char *decl_name = mono_method_full_name (m1, TRUE);
4679 mono_class_set_type_load_failure (klass, "Method %s overrides method '%s' which is not accessible", body_name, decl_name);
4685 g_assert (cm->slot < max_vtsize);
4687 override_map = g_hash_table_new (mono_aligned_addr_hash, NULL);
4688 TRACE_INTERFACE_VTABLE (printf ("adding iface override from %s [%p] to %s [%p]\n",
4689 mono_method_full_name (m1, 1), m1,
4690 mono_method_full_name (cm, 1), cm));
4691 g_hash_table_insert (override_map, m1, cm);
4695 if (mono_class_has_failure (k))
4705 /*Non final newslot methods must be given a non-interface vtable slot*/
4706 if ((cm->flags & METHOD_ATTRIBUTE_NEW_SLOT) && !(cm->flags & METHOD_ATTRIBUTE_FINAL) && cm->slot >= 0)
4710 cm->slot = cur_slot++;
4712 if (!(cm->flags & METHOD_ATTRIBUTE_ABSTRACT))
4713 vtable [cm->slot] = cm;
4716 /* override non interface methods */
4717 for (i = 0; i < onum; i++) {
4718 MonoMethod *decl = overrides [i*2];
4719 if (!MONO_CLASS_IS_INTERFACE (decl->klass)) {
4720 g_assert (decl->slot != -1);
4721 vtable [decl->slot] = overrides [i*2 + 1];
4722 overrides [i * 2 + 1]->slot = decl->slot;
4724 override_map = g_hash_table_new (mono_aligned_addr_hash, NULL);
4725 TRACE_INTERFACE_VTABLE (printf ("adding explicit override from %s [%p] to %s [%p]\n",
4726 mono_method_full_name (decl, 1), decl,
4727 mono_method_full_name (overrides [i * 2 + 1], 1), overrides [i * 2 + 1]));
4728 g_hash_table_insert (override_map, decl, overrides [i * 2 + 1]);
4730 if (mono_security_core_clr_enabled ())
4731 mono_security_core_clr_check_override (klass, vtable [decl->slot], decl);
4736 * If a method occupies more than one place in the vtable, and it is
4737 * overriden, then change the other occurances too.
4742 for (i = 0; i < max_vtsize; ++i)
4744 TRACE_INTERFACE_VTABLE (printf ("checking slot %d method %s[%p] for overrides\n", i, mono_method_full_name (vtable [i], 1), vtable [i]));
4746 cm = (MonoMethod *)g_hash_table_lookup (override_map, vtable [i]);
4751 g_hash_table_destroy (override_map);
4752 override_map = NULL;
4755 g_slist_free (virt_methods);
4756 virt_methods = NULL;
4758 /* Ensure that all vtable slots are filled with concrete instance methods */
4759 if (!(klass->flags & TYPE_ATTRIBUTE_ABSTRACT)) {
4760 for (i = 0; i < cur_slot; ++i) {
4761 if (vtable [i] == NULL || (vtable [i]->flags & (METHOD_ATTRIBUTE_ABSTRACT | METHOD_ATTRIBUTE_STATIC))) {
4762 char *type_name = mono_type_get_full_name (klass);
4763 char *method_name = vtable [i] ? mono_method_full_name (vtable [i], TRUE) : g_strdup ("none");
4764 mono_class_set_type_load_failure (klass, "Type %s has invalid vtable method slot %d with method %s", type_name, i, method_name);
4766 g_free (method_name);
4772 if (klass->generic_class) {
4773 MonoClass *gklass = klass->generic_class->container_class;
4775 mono_class_init (gklass);
4777 klass->vtable_size = MAX (gklass->vtable_size, cur_slot);
4779 /* Check that the vtable_size value computed in mono_class_init () is correct */
4780 if (klass->vtable_size)
4781 g_assert (cur_slot == klass->vtable_size);
4782 klass->vtable_size = cur_slot;
4785 /* Try to share the vtable with our parent. */
4786 if (klass->parent && (klass->parent->vtable_size == klass->vtable_size) && (memcmp (klass->parent->vtable, vtable, sizeof (gpointer) * klass->vtable_size) == 0)) {
4787 mono_memory_barrier ();
4788 klass->vtable = klass->parent->vtable;
4790 MonoMethod **tmp = (MonoMethod **)mono_class_alloc0 (klass, sizeof (gpointer) * klass->vtable_size);
4791 memcpy (tmp, vtable, sizeof (gpointer) * klass->vtable_size);
4792 mono_memory_barrier ();
4793 klass->vtable = tmp;
4796 DEBUG_INTERFACE_VTABLE (print_vtable_full (klass, klass->vtable, klass->vtable_size, first_non_interface_slot, "FINALLY", FALSE));
4797 if (mono_print_vtable) {
4800 print_implemented_interfaces (klass);
4802 for (i = 0; i <= max_iid; i++)
4803 if (MONO_CLASS_IMPLEMENTS_INTERFACE (klass, i))
4806 printf ("VTable %s (vtable entries = %d, interfaces = %d)\n", mono_type_full_name (&klass->byval_arg),
4807 klass->vtable_size, icount);
4809 for (i = 0; i < cur_slot; ++i) {
4814 printf (" slot assigned: %03d, slot index: %03d %s\n", i, cm->slot,
4815 mono_method_full_name (cm, TRUE));
4821 printf ("Interfaces %s.%s (max_iid = %d)\n", klass->name_space,
4822 klass->name, max_iid);
4824 for (i = 0; i < klass->interface_count; i++) {
4825 ic = klass->interfaces [i];
4826 printf (" slot offset: %03d, method count: %03d, iid: %03d %s\n",
4827 mono_class_interface_offset (klass, ic),
4828 count_virtual_methods (ic), ic->interface_id, mono_type_full_name (&ic->byval_arg));
4831 for (k = klass->parent; k ; k = k->parent) {
4832 for (i = 0; i < k->interface_count; i++) {
4833 ic = k->interfaces [i];
4834 printf (" parent slot offset: %03d, method count: %03d, iid: %03d %s\n",
4835 mono_class_interface_offset (klass, ic),
4836 count_virtual_methods (ic), ic->interface_id, mono_type_full_name (&ic->byval_arg));
4842 VERIFY_INTERFACE_VTABLE (mono_class_verify_vtable (klass));
4847 char *name = mono_type_get_full_name (klass);
4848 mono_class_set_type_load_failure (klass, "VTable setup of type %s failed", name);
4851 g_hash_table_destroy (override_map);
4853 g_slist_free (virt_methods);
4858 * mono_method_get_vtable_slot:
4860 * Returns method->slot, computing it if neccesary. Return -1 on failure.
4861 * LOCKING: Acquires the loader lock.
4863 * FIXME Use proper MonoError machinery here.
4866 mono_method_get_vtable_slot (MonoMethod *method)
4868 if (method->slot == -1) {
4869 mono_class_setup_vtable (method->klass);
4870 if (mono_class_has_failure (method->klass))
4872 if (method->slot == -1) {
4876 if (!method->klass->generic_class) {
4877 g_assert (method->is_inflated);
4878 return mono_method_get_vtable_slot (((MonoMethodInflated*)method)->declaring);
4881 /* This can happen for abstract methods of generic instances due to the shortcut code in mono_class_setup_vtable_general (). */
4882 g_assert (method->klass->generic_class);
4883 gklass = method->klass->generic_class->container_class;
4884 mono_class_setup_methods (method->klass);
4885 g_assert (method->klass->methods);
4886 for (i = 0; i < method->klass->method.count; ++i) {
4887 if (method->klass->methods [i] == method)
4890 g_assert (i < method->klass->method.count);
4891 g_assert (gklass->methods);
4892 method->slot = gklass->methods [i]->slot;
4894 g_assert (method->slot != -1);
4896 return method->slot;
4900 * mono_method_get_vtable_index:
4903 * Returns the index into the runtime vtable to access the method or,
4904 * in the case of a virtual generic method, the virtual generic method
4905 * thunk. Returns -1 on failure.
4907 * FIXME Use proper MonoError machinery here.
4910 mono_method_get_vtable_index (MonoMethod *method)
4912 if (method->is_inflated && (method->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
4913 MonoMethodInflated *imethod = (MonoMethodInflated*)method;
4914 if (imethod->declaring->is_generic)
4915 return mono_method_get_vtable_slot (imethod->declaring);
4917 return mono_method_get_vtable_slot (method);
4920 static MonoMethod *default_ghc = NULL;
4921 static MonoMethod *default_finalize = NULL;
4922 static int finalize_slot = -1;
4923 static int ghc_slot = -1;
4926 initialize_object_slots (MonoClass *klass)
4931 if (klass == mono_defaults.object_class) {
4932 mono_class_setup_vtable (klass);
4933 for (i = 0; i < klass->vtable_size; ++i) {
4934 MonoMethod *cm = klass->vtable [i];
4936 if (!strcmp (cm->name, "GetHashCode"))
4938 else if (!strcmp (cm->name, "Finalize"))
4942 g_assert (ghc_slot > 0);
4943 default_ghc = klass->vtable [ghc_slot];
4945 g_assert (finalize_slot > 0);
4946 default_finalize = klass->vtable [finalize_slot];
4951 MonoMethod *array_method;
4953 } GenericArrayMethodInfo;
4955 static int generic_array_method_num = 0;
4956 static GenericArrayMethodInfo *generic_array_method_info = NULL;
4959 generic_array_methods (MonoClass *klass)
4961 int i, count_generic = 0;
4962 GList *list = NULL, *tmp;
4963 if (generic_array_method_num)
4964 return generic_array_method_num;
4965 mono_class_setup_methods (klass->parent); /*This is setting up System.Array*/
4966 g_assert (!mono_class_has_failure (klass->parent)); /*So hitting this assert is a huge problem*/
4967 for (i = 0; i < klass->parent->method.count; i++) {
4968 MonoMethod *m = klass->parent->methods [i];
4969 if (!strncmp (m->name, "InternalArray__", 15)) {
4971 list = g_list_prepend (list, m);
4974 list = g_list_reverse (list);
4975 generic_array_method_info = (GenericArrayMethodInfo *)mono_image_alloc (mono_defaults.corlib, sizeof (GenericArrayMethodInfo) * count_generic);
4977 for (tmp = list; tmp; tmp = tmp->next) {
4978 const char *mname, *iname;
4980 MonoMethod *m = (MonoMethod *)tmp->data;
4981 const char *ireadonlylist_prefix = "InternalArray__IReadOnlyList_";
4982 const char *ireadonlycollection_prefix = "InternalArray__IReadOnlyCollection_";
4984 generic_array_method_info [i].array_method = m;
4985 if (!strncmp (m->name, "InternalArray__ICollection_", 27)) {
4986 iname = "System.Collections.Generic.ICollection`1.";
4987 mname = m->name + 27;
4988 } else if (!strncmp (m->name, "InternalArray__IEnumerable_", 27)) {
4989 iname = "System.Collections.Generic.IEnumerable`1.";
4990 mname = m->name + 27;
4991 } else if (!strncmp (m->name, ireadonlylist_prefix, strlen (ireadonlylist_prefix))) {
4992 iname = "System.Collections.Generic.IReadOnlyList`1.";
4993 mname = m->name + strlen (ireadonlylist_prefix);
4994 } else if (!strncmp (m->name, ireadonlycollection_prefix, strlen (ireadonlycollection_prefix))) {
4995 iname = "System.Collections.Generic.IReadOnlyCollection`1.";
4996 mname = m->name + strlen (ireadonlycollection_prefix);
4997 } else if (!strncmp (m->name, "InternalArray__", 15)) {
4998 iname = "System.Collections.Generic.IList`1.";
4999 mname = m->name + 15;
5001 g_assert_not_reached ();
5004 name = (gchar *)mono_image_alloc (mono_defaults.corlib, strlen (iname) + strlen (mname) + 1);
5005 strcpy (name, iname);
5006 strcpy (name + strlen (iname), mname);
5007 generic_array_method_info [i].name = name;
5010 /*g_print ("array generic methods: %d\n", count_generic);*/
5012 generic_array_method_num = count_generic;
5014 return generic_array_method_num;
5018 setup_generic_array_ifaces (MonoClass *klass, MonoClass *iface, MonoMethod **methods, int pos)
5020 MonoGenericContext tmp_context;
5023 tmp_context.class_inst = NULL;
5024 tmp_context.method_inst = iface->generic_class->context.class_inst;
5025 //g_print ("setting up array interface: %s\n", mono_type_get_name_full (&iface->byval_arg, 0));
5027 for (i = 0; i < generic_array_method_num; i++) {
5029 MonoMethod *m = generic_array_method_info [i].array_method;
5030 MonoMethod *inflated;
5032 inflated = mono_class_inflate_generic_method_checked (m, &tmp_context, &error);
5033 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
5034 methods [pos++] = mono_marshal_get_generic_array_helper (klass, iface, generic_array_method_info [i].name, inflated);
5039 concat_two_strings_with_zero (MonoImage *image, const char *s1, const char *s2)
5041 int null_length = strlen ("(null)");
5042 int len = (s1 ? strlen (s1) : null_length) + (s2 ? strlen (s2) : null_length) + 2;
5043 char *s = (char *)mono_image_alloc (image, len);
5046 result = g_snprintf (s, len, "%s%c%s", s1 ? s1 : "(null)", '\0', s2 ? s2 : "(null)");
5047 g_assert (result == len - 1);
5054 * @class: the class to initialize
5056 * Compute the instance_size, class_size and other infos that cannot be
5057 * computed at mono_class_get() time. Also compute vtable_size if possible.
5058 * Returns TRUE on success or FALSE if there was a problem in loading
5059 * the type (incorrect assemblies, missing assemblies, methods, etc).
5061 * LOCKING: Acquires the loader lock.
5064 mono_class_init (MonoClass *klass)
5067 MonoCachedClassInfo cached_info;
5068 gboolean has_cached_info;
5072 /* Double-checking locking pattern */
5073 if (klass->inited || mono_class_has_failure (klass))
5074 return !mono_class_has_failure (klass);
5076 /*g_print ("Init class %s\n", mono_type_get_full_name (klass));*/
5078 /* We do everything inside the lock to prevent races */
5079 mono_loader_lock ();
5081 if (klass->inited || mono_class_has_failure (klass)) {
5082 mono_loader_unlock ();
5083 /* Somebody might have gotten in before us */
5084 return !mono_class_has_failure (klass);
5087 if (klass->init_pending) {
5088 mono_class_set_type_load_failure (klass, "Recursive type definition detected");
5092 klass->init_pending = 1;
5094 if (mono_verifier_is_enabled_for_class (klass) && !mono_verifier_verify_class (klass)) {
5095 mono_class_set_type_load_failure (klass, "%s", concat_two_strings_with_zero (klass->image, klass->name, klass->image->assembly_name));
5100 if (klass->byval_arg.type == MONO_TYPE_ARRAY || klass->byval_arg.type == MONO_TYPE_SZARRAY) {
5101 MonoClass *element_class = klass->element_class;
5102 if (!element_class->inited)
5103 mono_class_init (element_class);
5104 if (mono_class_set_type_load_failure_causedby_class (klass, element_class, "Could not load array element class"))
5108 mono_stats.initialized_class_count++;
5110 if (klass->generic_class && !klass->generic_class->is_dynamic) {
5111 MonoClass *gklass = klass->generic_class->container_class;
5113 mono_stats.generic_class_count++;
5115 klass->method = gklass->method;
5116 klass->field = gklass->field;
5118 mono_class_init (gklass);
5119 // FIXME: Why is this needed ?
5120 if (!mono_class_has_failure (gklass))
5121 mono_class_setup_methods (gklass);
5122 if (mono_class_set_type_load_failure_causedby_class (klass, gklass, "Generic Type Definition failed to init"))
5125 if (MONO_CLASS_IS_INTERFACE (klass))
5126 klass->interface_id = mono_get_unique_iid (klass);
5129 if (klass->parent && !klass->parent->inited)
5130 mono_class_init (klass->parent);
5132 has_cached_info = mono_class_get_cached_class_info (klass, &cached_info);
5134 if (klass->generic_class || image_is_dynamic (klass->image) || !klass->type_token || (has_cached_info && !cached_info.has_nested_classes))
5135 klass->nested_classes_inited = TRUE;
5138 * Computes the size used by the fields, and their locations
5140 if (has_cached_info) {
5141 klass->instance_size = cached_info.instance_size;
5142 klass->sizes.class_size = cached_info.class_size;
5143 klass->packing_size = cached_info.packing_size;
5144 klass->min_align = cached_info.min_align;
5145 klass->blittable = cached_info.blittable;
5146 klass->has_references = cached_info.has_references;
5147 klass->has_static_refs = cached_info.has_static_refs;
5148 klass->no_special_static_fields = cached_info.no_special_static_fields;
5151 if (!klass->size_inited){
5152 mono_class_setup_fields (klass);
5153 if (mono_class_has_failure (klass))
5157 /* Initialize arrays */
5159 klass->method.count = 3 + (klass->rank > 1? 2: 1);
5161 if (klass->interface_count) {
5162 int count_generic = generic_array_methods (klass);
5163 klass->method.count += klass->interface_count * count_generic;
5167 mono_class_setup_supertypes (klass);
5170 initialize_object_slots (klass);
5173 * Initialize the rest of the data without creating a generic vtable if possible.
5174 * If possible, also compute vtable_size, so mono_class_create_runtime_vtable () can
5175 * also avoid computing a generic vtable.
5177 if (has_cached_info) {
5179 klass->vtable_size = cached_info.vtable_size;
5180 klass->has_finalize = cached_info.has_finalize;
5181 klass->has_finalize_inited = TRUE;
5182 klass->ghcimpl = cached_info.ghcimpl;
5183 klass->has_cctor = cached_info.has_cctor;
5184 } else if (klass->rank == 1 && klass->byval_arg.type == MONO_TYPE_SZARRAY) {
5185 /* SZARRAY can have 2 vtable layouts, with and without the stelemref method.
5186 * The first slot if for array with.
5188 static int szarray_vtable_size[2] = { 0 };
5190 int slot = MONO_TYPE_IS_REFERENCE (&klass->element_class->byval_arg) ? 0 : 1;
5193 if (!szarray_vtable_size [slot]) {
5194 mono_class_setup_vtable (klass);
5195 szarray_vtable_size [slot] = klass->vtable_size;
5197 klass->vtable_size = szarray_vtable_size[slot];
5199 } else if (klass->generic_class && !MONO_CLASS_IS_INTERFACE (klass)) {
5200 MonoClass *gklass = klass->generic_class->container_class;
5202 /* Generic instance case */
5203 klass->ghcimpl = gklass->ghcimpl;
5204 klass->has_cctor = gklass->has_cctor;
5206 mono_class_setup_vtable (gklass);
5207 if (mono_class_set_type_load_failure_causedby_class (klass, gklass, "Generic type definition failed to init"))
5210 klass->vtable_size = gklass->vtable_size;
5214 /* ghcimpl is not currently used
5216 if (klass->parent) {
5217 MonoMethod *cmethod = klass->vtable [ghc_slot];
5218 if (cmethod->is_inflated)
5219 cmethod = ((MonoMethodInflated*)cmethod)->declaring;
5220 if (cmethod == default_ghc) {
5226 /* C# doesn't allow interfaces to have cctors */
5227 if (!MONO_CLASS_IS_INTERFACE (klass) || klass->image != mono_defaults.corlib) {
5228 MonoMethod *cmethod = NULL;
5230 if (klass->type_token && !image_is_dynamic(klass->image)) {
5231 cmethod = find_method_in_metadata (klass, ".cctor", 0, METHOD_ATTRIBUTE_SPECIAL_NAME);
5232 /* The find_method function ignores the 'flags' argument */
5233 if (cmethod && (cmethod->flags & METHOD_ATTRIBUTE_SPECIAL_NAME))
5234 klass->has_cctor = 1;
5236 mono_class_setup_methods (klass);
5237 if (mono_class_has_failure (klass))
5240 for (i = 0; i < klass->method.count; ++i) {
5241 MonoMethod *method = klass->methods [i];
5242 if ((method->flags & METHOD_ATTRIBUTE_SPECIAL_NAME) &&
5243 (strcmp (".cctor", method->name) == 0)) {
5244 klass->has_cctor = 1;
5252 if (klass->parent) {
5253 MonoError parent_error;
5254 mono_error_init (&parent_error);
5255 int first_iface_slot;
5256 /* This will compute klass->parent->vtable_size for some classes */
5257 mono_class_init (klass->parent);
5258 if (mono_class_set_type_load_failure_causedby_class (klass, klass->parent, "Parent class failed to initialize")) {
5261 if (!klass->parent->vtable_size) {
5262 /* FIXME: Get rid of this somehow */
5263 mono_class_setup_vtable (klass->parent);
5264 if (mono_class_set_type_load_failure_causedby_class (klass, klass->parent, "Parent class vtable failed to initialize")) {
5268 first_iface_slot = klass->parent->vtable_size;
5269 if (mono_class_need_stelemref_method (klass))
5271 setup_interface_offsets (klass, first_iface_slot, TRUE);
5273 setup_interface_offsets (klass, 0, TRUE);
5276 if (mono_security_core_clr_enabled ())
5277 mono_security_core_clr_check_inheritance (klass);
5279 if (klass->generic_class && !mono_verifier_class_is_valid_generic_instantiation (klass))
5280 mono_class_set_type_load_failure (klass, "Invalid generic instantiation");
5285 /* Because of the double-checking locking pattern */
5286 mono_memory_barrier ();
5288 klass->init_pending = 0;
5290 mono_loader_unlock ();
5292 return !mono_class_has_failure (klass);
5296 * mono_class_has_finalizer:
5298 * Return whenever KLASS has a finalizer, initializing klass->has_finalizer in the
5302 mono_class_has_finalizer (MonoClass *klass)
5304 gboolean has_finalize = FALSE;
5306 if (klass->has_finalize_inited)
5307 return klass->has_finalize;
5309 /* Interfaces and valuetypes are not supposed to have finalizers */
5310 if (!(MONO_CLASS_IS_INTERFACE (klass) || klass->valuetype)) {
5311 MonoMethod *cmethod = NULL;
5313 if (klass->rank == 1 && klass->byval_arg.type == MONO_TYPE_SZARRAY) {
5314 } else if (klass->generic_class) {
5315 MonoClass *gklass = klass->generic_class->container_class;
5317 has_finalize = mono_class_has_finalizer (gklass);
5318 } else if (klass->parent && klass->parent->has_finalize) {
5319 has_finalize = TRUE;
5321 if (klass->parent) {
5323 * Can't search in metadata for a method named Finalize, because that
5324 * ignores overrides.
5326 mono_class_setup_vtable (klass);
5327 if (mono_class_has_failure (klass))
5330 cmethod = klass->vtable [finalize_slot];
5334 g_assert (klass->vtable_size > finalize_slot);
5336 if (klass->parent) {
5337 if (cmethod->is_inflated)
5338 cmethod = ((MonoMethodInflated*)cmethod)->declaring;
5339 if (cmethod != default_finalize)
5340 has_finalize = TRUE;
5346 mono_image_lock (klass->image);
5348 if (!klass->has_finalize_inited) {
5349 klass->has_finalize = has_finalize ? 1 : 0;
5351 mono_memory_barrier ();
5352 klass->has_finalize_inited = TRUE;
5355 mono_image_unlock (klass->image);
5357 return klass->has_finalize;
5361 mono_is_corlib_image (MonoImage *image)
5363 return image == mono_defaults.corlib;
5367 * LOCKING: this assumes the loader lock is held
5370 mono_class_setup_mono_type (MonoClass *klass)
5372 const char *name = klass->name;
5373 const char *nspace = klass->name_space;
5374 gboolean is_corlib = mono_is_corlib_image (klass->image);
5376 klass->this_arg.byref = 1;
5377 klass->this_arg.data.klass = klass;
5378 klass->this_arg.type = MONO_TYPE_CLASS;
5379 klass->byval_arg.data.klass = klass;
5380 klass->byval_arg.type = MONO_TYPE_CLASS;
5382 if (is_corlib && !strcmp (nspace, "System")) {
5383 if (!strcmp (name, "ValueType")) {
5385 * do not set the valuetype bit for System.ValueType.
5386 * klass->valuetype = 1;
5388 klass->blittable = TRUE;
5389 } else if (!strcmp (name, "Enum")) {
5391 * do not set the valuetype bit for System.Enum.
5392 * klass->valuetype = 1;
5394 klass->valuetype = 0;
5395 klass->enumtype = 0;
5396 } else if (!strcmp (name, "Object")) {
5397 klass->byval_arg.type = MONO_TYPE_OBJECT;
5398 klass->this_arg.type = MONO_TYPE_OBJECT;
5399 } else if (!strcmp (name, "String")) {
5400 klass->byval_arg.type = MONO_TYPE_STRING;
5401 klass->this_arg.type = MONO_TYPE_STRING;
5402 } else if (!strcmp (name, "TypedReference")) {
5403 klass->byval_arg.type = MONO_TYPE_TYPEDBYREF;
5404 klass->this_arg.type = MONO_TYPE_TYPEDBYREF;
5408 if (klass->valuetype) {
5409 int t = MONO_TYPE_VALUETYPE;
5411 if (is_corlib && !strcmp (nspace, "System")) {
5414 if (!strcmp (name, "Boolean")) {
5415 t = MONO_TYPE_BOOLEAN;
5416 } else if (!strcmp(name, "Byte")) {
5418 klass->blittable = TRUE;
5422 if (!strcmp (name, "Char")) {
5427 if (!strcmp (name, "Double")) {
5429 klass->blittable = TRUE;
5433 if (!strcmp (name, "Int32")) {
5435 klass->blittable = TRUE;
5436 } else if (!strcmp(name, "Int16")) {
5438 klass->blittable = TRUE;
5439 } else if (!strcmp(name, "Int64")) {
5441 klass->blittable = TRUE;
5442 } else if (!strcmp(name, "IntPtr")) {
5444 klass->blittable = TRUE;
5448 if (!strcmp (name, "Single")) {
5450 klass->blittable = TRUE;
5451 } else if (!strcmp(name, "SByte")) {
5453 klass->blittable = TRUE;
5457 if (!strcmp (name, "UInt32")) {
5459 klass->blittable = TRUE;
5460 } else if (!strcmp(name, "UInt16")) {
5462 klass->blittable = TRUE;
5463 } else if (!strcmp(name, "UInt64")) {
5465 klass->blittable = TRUE;
5466 } else if (!strcmp(name, "UIntPtr")) {
5468 klass->blittable = TRUE;
5472 if (!strcmp (name, "TypedReference")) {
5473 t = MONO_TYPE_TYPEDBYREF;
5474 klass->blittable = TRUE;
5478 if (!strcmp (name, "Void")) {
5486 klass->byval_arg.type = (MonoTypeEnum)t;
5487 klass->this_arg.type = (MonoTypeEnum)t;
5490 if (MONO_CLASS_IS_INTERFACE (klass))
5491 klass->interface_id = mono_get_unique_iid (klass);
5497 * COM initialization is delayed until needed.
5498 * However when a [ComImport] attribute is present on a type it will trigger
5499 * the initialization. This is not a problem unless the BCL being executed
5500 * lacks the types that COM depends on (e.g. Variant on Silverlight).
5503 init_com_from_comimport (MonoClass *klass)
5505 /* we don't always allow COM initialization under the CoreCLR (e.g. Moonlight does not require it) */
5506 if (mono_security_core_clr_enabled ()) {
5507 /* but some other CoreCLR user could requires it for their platform (i.e. trusted) code */
5508 if (!mono_security_core_clr_determine_platform_image (klass->image)) {
5509 /* but it can not be made available for application (i.e. user code) since all COM calls
5510 * are considered native calls. In this case we fail with a TypeLoadException (just like
5511 * Silverlight 2 does */
5512 mono_class_set_type_load_failure (klass, "");
5517 /* FIXME : we should add an extra checks to ensure COM can be initialized properly before continuing */
5519 #endif /*DISABLE_COM*/
5522 * LOCKING: this assumes the loader lock is held
5525 mono_class_setup_parent (MonoClass *klass, MonoClass *parent)
5527 gboolean system_namespace;
5528 gboolean is_corlib = mono_is_corlib_image (klass->image);
5530 system_namespace = !strcmp (klass->name_space, "System") && is_corlib;
5532 /* if root of the hierarchy */
5533 if (system_namespace && !strcmp (klass->name, "Object")) {
5534 klass->parent = NULL;
5535 klass->instance_size = sizeof (MonoObject);
5538 if (!strcmp (klass->name, "<Module>")) {
5539 klass->parent = NULL;
5540 klass->instance_size = 0;
5544 if (!MONO_CLASS_IS_INTERFACE (klass)) {
5545 /* Imported COM Objects always derive from __ComObject. */
5547 if (MONO_CLASS_IS_IMPORT (klass)) {
5548 init_com_from_comimport (klass);
5549 if (parent == mono_defaults.object_class)
5550 parent = mono_class_get_com_object_class ();
5554 /* set the parent to something useful and safe, but mark the type as broken */
5555 parent = mono_defaults.object_class;
5556 mono_class_set_type_load_failure (klass, "");
5560 klass->parent = parent;
5562 if (parent->generic_class && !parent->name) {
5564 * If the parent is a generic instance, we may get
5565 * called before it is fully initialized, especially
5566 * before it has its name.
5571 #ifndef DISABLE_REMOTING
5572 klass->marshalbyref = parent->marshalbyref;
5573 klass->contextbound = parent->contextbound;
5576 klass->delegate = parent->delegate;
5578 if (MONO_CLASS_IS_IMPORT (klass) || mono_class_is_com_object (parent))
5579 mono_class_set_is_com_object (klass);
5581 if (system_namespace) {
5582 #ifndef DISABLE_REMOTING
5583 if (klass->name [0] == 'M' && !strcmp (klass->name, "MarshalByRefObject"))
5584 klass->marshalbyref = 1;
5586 if (klass->name [0] == 'C' && !strcmp (klass->name, "ContextBoundObject"))
5587 klass->contextbound = 1;
5589 if (klass->name [0] == 'D' && !strcmp (klass->name, "Delegate"))
5590 klass->delegate = 1;
5593 if (klass->parent->enumtype || (mono_is_corlib_image (klass->parent->image) && (strcmp (klass->parent->name, "ValueType") == 0) &&
5594 (strcmp (klass->parent->name_space, "System") == 0)))
5595 klass->valuetype = 1;
5596 if (mono_is_corlib_image (klass->parent->image) && ((strcmp (klass->parent->name, "Enum") == 0) && (strcmp (klass->parent->name_space, "System") == 0))) {
5597 klass->valuetype = klass->enumtype = 1;
5599 /*klass->enumtype = klass->parent->enumtype; */
5601 /* initialize com types if COM interfaces are present */
5603 if (MONO_CLASS_IS_IMPORT (klass))
5604 init_com_from_comimport (klass);
5606 klass->parent = NULL;
5612 * mono_class_setup_supertypes:
5615 * Build the data structure needed to make fast type checks work.
5616 * This currently sets two fields in @class:
5617 * - idepth: distance between @class and System.Object in the type
5619 * - supertypes: array of classes: each element has a class in the hierarchy
5620 * starting from @class up to System.Object
5622 * LOCKING: This function is atomic, in case of contention we waste memory.
5625 mono_class_setup_supertypes (MonoClass *klass)
5628 MonoClass **supertypes;
5630 mono_atomic_load_acquire (supertypes, MonoClass **, &klass->supertypes);
5634 if (klass->parent && !klass->parent->supertypes)
5635 mono_class_setup_supertypes (klass->parent);
5637 klass->idepth = klass->parent->idepth + 1;
5641 ms = MAX (MONO_DEFAULT_SUPERTABLE_SIZE, klass->idepth);
5642 supertypes = (MonoClass **)mono_class_alloc0 (klass, sizeof (MonoClass *) * ms);
5644 if (klass->parent) {
5645 CHECKED_METADATA_WRITE_PTR ( supertypes [klass->idepth - 1] , klass );
5648 for (supertype_idx = 0; supertype_idx < klass->parent->idepth; supertype_idx++)
5649 CHECKED_METADATA_WRITE_PTR ( supertypes [supertype_idx] , klass->parent->supertypes [supertype_idx] );
5651 CHECKED_METADATA_WRITE_PTR ( supertypes [0] , klass );
5654 CHECKED_METADATA_WRITE_PTR_ATOMIC ( klass->supertypes , supertypes );
5658 fix_gclass_incomplete_instantiation (MonoClass *gclass, void *user_data)
5660 MonoClass *gtd = (MonoClass*)user_data;
5661 /* Only try to fix generic instances of @gtd */
5662 if (gclass->generic_class->container_class != gtd)
5665 /* Check if the generic instance has no parent. */
5666 if (gtd->parent && !gclass->parent)
5667 mono_generic_class_setup_parent (gclass, gtd);
5673 mono_class_set_failure_and_error (MonoClass *klass, MonoError *error, const char *msg)
5675 mono_class_set_type_load_failure (klass, "%s", msg);
5676 mono_error_set_type_load_class (error, klass, "%s", msg);
5680 * mono_class_create_from_typedef:
5681 * @image: image where the token is valid
5682 * @type_token: typedef token
5683 * @error: used to return any error found while creating the type
5685 * Create the MonoClass* representing the specified type token.
5686 * @type_token must be a TypeDef token.
5688 * FIXME: don't return NULL on failure, just the the caller figure it out.
5691 mono_class_create_from_typedef (MonoImage *image, guint32 type_token, MonoError *error)
5693 MonoTableInfo *tt = &image->tables [MONO_TABLE_TYPEDEF];
5694 MonoClass *klass, *parent = NULL;
5695 guint32 cols [MONO_TYPEDEF_SIZE];
5696 guint32 cols_next [MONO_TYPEDEF_SIZE];
5697 guint tidx = mono_metadata_token_index (type_token);
5698 MonoGenericContext *context = NULL;
5699 const char *name, *nspace;
5701 MonoClass **interfaces;
5702 guint32 field_last, method_last;
5703 guint32 nesting_tokeen;
5705 mono_error_init (error);
5707 if (mono_metadata_token_table (type_token) != MONO_TABLE_TYPEDEF || tidx > tt->rows) {
5708 mono_error_set_bad_image (error, image, "Invalid typedef token %x", type_token);
5712 mono_loader_lock ();
5714 if ((klass = (MonoClass *)mono_internal_hash_table_lookup (&image->class_cache, GUINT_TO_POINTER (type_token)))) {
5715 mono_loader_unlock ();
5719 mono_metadata_decode_row (tt, tidx - 1, cols, MONO_TYPEDEF_SIZE);
5721 name = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
5722 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
5724 klass = (MonoClass *)mono_image_alloc0 (image, sizeof (MonoClass));
5727 klass->name_space = nspace;
5729 mono_profiler_class_event (klass, MONO_PROFILE_START_LOAD);
5731 klass->image = image;
5732 klass->type_token = type_token;
5733 klass->flags = cols [MONO_TYPEDEF_FLAGS];
5735 mono_internal_hash_table_insert (&image->class_cache, GUINT_TO_POINTER (type_token), klass);
5737 classes_size += sizeof (MonoClass);
5740 * Check whether we're a generic type definition.
5742 klass->generic_container = mono_metadata_load_generic_params (image, klass->type_token, NULL);
5743 if (klass->generic_container) {
5744 klass->is_generic = 1;
5745 klass->generic_container->owner.klass = klass;
5746 klass->generic_container->is_anonymous = FALSE; // Owner class is now known, container is no longer anonymous
5747 context = &klass->generic_container->context;
5750 if (klass->generic_container)
5751 enable_gclass_recording ();
5753 if (cols [MONO_TYPEDEF_EXTENDS]) {
5755 guint32 parent_token = mono_metadata_token_from_dor (cols [MONO_TYPEDEF_EXTENDS]);
5757 if (mono_metadata_token_table (parent_token) == MONO_TABLE_TYPESPEC) {
5758 /*WARNING: this must satisfy mono_metadata_type_hash*/
5759 klass->this_arg.byref = 1;
5760 klass->this_arg.data.klass = klass;
5761 klass->this_arg.type = MONO_TYPE_CLASS;
5762 klass->byval_arg.data.klass = klass;
5763 klass->byval_arg.type = MONO_TYPE_CLASS;
5765 parent = mono_class_get_checked (image, parent_token, error);
5766 if (parent && context) /* Always inflate */
5767 parent = mono_class_inflate_generic_class_checked (parent, context, error);
5769 if (parent == NULL) {
5770 mono_class_set_type_load_failure (klass, "%s", mono_error_get_message (error));
5771 goto parent_failure;
5774 for (tmp = parent; tmp; tmp = tmp->parent) {
5776 mono_class_set_failure_and_error (klass, error, "Cycle found while resolving parent");
5777 goto parent_failure;
5779 if (klass->generic_container && tmp->generic_class && tmp->generic_class->container_class == klass) {
5780 mono_class_set_failure_and_error (klass, error, "Parent extends generic instance of this type");
5781 goto parent_failure;
5786 mono_class_setup_parent (klass, parent);
5788 /* uses ->valuetype, which is initialized by mono_class_setup_parent above */
5789 mono_class_setup_mono_type (klass);
5791 if (klass->generic_container)
5792 disable_gclass_recording (fix_gclass_incomplete_instantiation, klass);
5795 * This might access klass->byval_arg for recursion generated by generic constraints,
5796 * so it has to come after setup_mono_type ().
5798 if ((nesting_tokeen = mono_metadata_nested_in_typedef (image, type_token))) {
5799 klass->nested_in = mono_class_create_from_typedef (image, nesting_tokeen, error);
5800 if (!mono_error_ok (error)) {
5801 /*FIXME implement a mono_class_set_failure_from_mono_error */
5802 mono_class_set_type_load_failure (klass, "%s", mono_error_get_message (error));
5803 mono_loader_unlock ();
5804 mono_profiler_class_loaded (klass, MONO_PROFILE_FAILED);
5809 if ((klass->flags & TYPE_ATTRIBUTE_STRING_FORMAT_MASK) == TYPE_ATTRIBUTE_UNICODE_CLASS)
5813 if ((klass->flags & TYPE_ATTRIBUTE_STRING_FORMAT_MASK) == TYPE_ATTRIBUTE_AUTO_CLASS)
5817 klass->cast_class = klass->element_class = klass;
5819 if (!klass->enumtype) {
5820 if (!mono_metadata_interfaces_from_typedef_full (
5821 image, type_token, &interfaces, &icount, FALSE, context, error)){
5823 mono_class_set_type_load_failure (klass, "%s", mono_error_get_message (error));
5824 mono_loader_unlock ();
5825 mono_profiler_class_loaded (klass, MONO_PROFILE_FAILED);
5829 klass->interfaces = interfaces;
5830 klass->interface_count = icount;
5831 klass->interfaces_inited = 1;
5834 /*g_print ("Load class %s\n", name);*/
5837 * Compute the field and method lists
5839 klass->field.first = cols [MONO_TYPEDEF_FIELD_LIST] - 1;
5840 klass->method.first = cols [MONO_TYPEDEF_METHOD_LIST] - 1;
5842 if (tt->rows > tidx){
5843 mono_metadata_decode_row (tt, tidx, cols_next, MONO_TYPEDEF_SIZE);
5844 field_last = cols_next [MONO_TYPEDEF_FIELD_LIST] - 1;
5845 method_last = cols_next [MONO_TYPEDEF_METHOD_LIST] - 1;
5847 field_last = image->tables [MONO_TABLE_FIELD].rows;
5848 method_last = image->tables [MONO_TABLE_METHOD].rows;
5851 if (cols [MONO_TYPEDEF_FIELD_LIST] &&
5852 cols [MONO_TYPEDEF_FIELD_LIST] <= image->tables [MONO_TABLE_FIELD].rows)
5853 klass->field.count = field_last - klass->field.first;
5855 klass->field.count = 0;
5857 if (cols [MONO_TYPEDEF_METHOD_LIST] <= image->tables [MONO_TABLE_METHOD].rows)
5858 klass->method.count = method_last - klass->method.first;
5860 klass->method.count = 0;
5862 /* reserve space to store vector pointer in arrays */
5863 if (mono_is_corlib_image (image) && !strcmp (nspace, "System") && !strcmp (name, "Array")) {
5864 klass->instance_size += 2 * sizeof (gpointer);
5865 g_assert (klass->field.count == 0);
5868 if (klass->enumtype) {
5869 MonoType *enum_basetype = mono_class_find_enum_basetype (klass, error);
5870 if (!enum_basetype) {
5871 /*set it to a default value as the whole runtime can't handle this to be null*/
5872 klass->cast_class = klass->element_class = mono_defaults.int32_class;
5873 mono_class_set_type_load_failure (klass, "%s", mono_error_get_message (error));
5874 mono_loader_unlock ();
5875 mono_profiler_class_loaded (klass, MONO_PROFILE_FAILED);
5878 klass->cast_class = klass->element_class = mono_class_from_mono_type (enum_basetype);
5882 * If we're a generic type definition, load the constraints.
5883 * We must do this after the class has been constructed to make certain recursive scenarios
5886 if (klass->generic_container && !mono_metadata_load_generic_param_constraints_checked (image, type_token, klass->generic_container, error)) {
5887 mono_class_set_type_load_failure (klass, "Could not load generic parameter constrains due to %s", mono_error_get_message (error));
5888 mono_loader_unlock ();
5889 mono_profiler_class_loaded (klass, MONO_PROFILE_FAILED);
5893 if (klass->image->assembly_name && !strcmp (klass->image->assembly_name, "Mono.Simd") && !strcmp (nspace, "Mono.Simd")) {
5894 if (!strncmp (name, "Vector", 6))
5895 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");
5898 mono_loader_unlock ();
5900 mono_profiler_class_loaded (klass, MONO_PROFILE_OK);
5905 mono_class_setup_mono_type (klass);
5906 mono_loader_unlock ();
5907 mono_profiler_class_loaded (klass, MONO_PROFILE_FAILED);
5911 /** Is klass a Nullable<T> ginst? */
5913 mono_class_is_nullable (MonoClass *klass)
5915 return klass->generic_class != NULL &&
5916 klass->generic_class->container_class == mono_defaults.generic_nullable_class;
5920 /** if klass is T? return T */
5922 mono_class_get_nullable_param (MonoClass *klass)
5924 g_assert (mono_class_is_nullable (klass));
5925 return mono_class_from_mono_type (klass->generic_class->context.class_inst->type_argv [0]);
5929 mono_generic_class_setup_parent (MonoClass *klass, MonoClass *gtd)
5933 MonoGenericClass *gclass = klass->generic_class;
5935 klass->parent = mono_class_inflate_generic_class_checked (gtd->parent, mono_generic_class_get_context (gclass), &error);
5936 if (!mono_error_ok (&error)) {
5937 /*Set parent to something safe as the runtime doesn't handle well this kind of failure.*/
5938 klass->parent = mono_defaults.object_class;
5939 mono_class_set_type_load_failure (klass, "Parent is a generic type instantiation that failed due to: %s", mono_error_get_message (&error));
5940 mono_error_cleanup (&error);
5944 mono_class_setup_parent (klass, klass->parent);
5946 if (klass->enumtype) {
5947 klass->cast_class = gtd->cast_class;
5948 klass->element_class = gtd->element_class;
5954 * Create the `MonoClass' for an instantiation of a generic type.
5955 * We only do this if we actually need it.
5958 mono_generic_class_get_class (MonoGenericClass *gclass)
5960 MonoClass *klass, *gklass;
5962 if (gclass->cached_class)
5963 return gclass->cached_class;
5965 mono_loader_lock ();
5966 if (gclass->cached_class) {
5967 mono_loader_unlock ();
5968 return gclass->cached_class;
5971 klass = (MonoClass *)mono_image_set_alloc0 (gclass->owner, sizeof (MonoClass));
5973 gklass = gclass->container_class;
5975 if (record_gclass_instantiation > 0)
5976 gclass_recorded_list = g_slist_append (gclass_recorded_list, klass);
5978 if (gklass->nested_in) {
5979 /* The nested_in type should not be inflated since it's possible to produce a nested type with less generic arguments*/
5980 klass->nested_in = gklass->nested_in;
5983 klass->name = gklass->name;
5984 klass->name_space = gklass->name_space;
5986 mono_profiler_class_event (klass, MONO_PROFILE_START_LOAD);
5988 klass->image = gklass->image;
5989 klass->flags = gklass->flags;
5990 klass->type_token = gklass->type_token;
5991 klass->field.count = gklass->field.count;
5993 klass->is_inflated = 1;
5994 klass->generic_class = gclass;
5996 klass->byval_arg.type = MONO_TYPE_GENERICINST;
5997 klass->this_arg.type = klass->byval_arg.type;
5998 klass->this_arg.data.generic_class = klass->byval_arg.data.generic_class = gclass;
5999 klass->this_arg.byref = TRUE;
6000 klass->enumtype = gklass->enumtype;
6001 klass->valuetype = gklass->valuetype;
6003 klass->cast_class = klass->element_class = klass;
6005 if (mono_class_is_nullable (klass))
6006 klass->cast_class = klass->element_class = mono_class_get_nullable_param (klass);
6009 * We're not interested in the nested classes of a generic instance.
6010 * We use the generic type definition to look for nested classes.
6013 mono_generic_class_setup_parent (klass, gklass);
6015 if (gclass->is_dynamic) {
6017 * 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.
6018 * This is to avoid work that would probably give wrong results as fields change as we build the TypeBuilder.
6019 * See remove_instantiations_of_and_ensure_contents in reflection.c and its usage in reflection.c to understand the fixup stage of SRE banking.
6021 if (!gklass->wastypebuilder)
6024 mono_class_setup_supertypes (klass);
6026 if (klass->enumtype) {
6028 * For enums, gklass->fields might not been set, but instance_size etc. is
6029 * already set in mono_reflection_create_internal_class (). For non-enums,
6030 * these will be computed normally in mono_class_layout_fields ().
6032 klass->instance_size = gklass->instance_size;
6033 klass->sizes.class_size = gklass->sizes.class_size;
6034 mono_memory_barrier ();
6035 klass->size_inited = 1;
6039 mono_memory_barrier ();
6040 gclass->cached_class = klass;
6042 mono_profiler_class_loaded (klass, MONO_PROFILE_OK);
6044 inflated_classes ++;
6045 inflated_classes_size += sizeof (MonoClass);
6047 mono_loader_unlock ();
6053 get_image_for_container (MonoGenericContainer *container)
6056 if (container->is_anonymous) {
6057 result = container->owner.image;
6060 if (container->is_method) {
6061 MonoMethod *method = container->owner.method;
6062 g_assert_checked (method);
6063 klass = method->klass;
6065 klass = container->owner.klass;
6067 g_assert_checked (klass);
6068 result = klass->image;
6075 get_image_for_generic_param (MonoGenericParam *param)
6077 MonoGenericContainer *container = mono_generic_param_owner (param);
6078 g_assert_checked (container);
6079 return get_image_for_container (container);
6082 // Make a string in the designated image consisting of a single integer.
6083 #define INT_STRING_SIZE 16
6085 make_generic_name_string (MonoImage *image, int num)
6087 char *name = (char *)mono_image_alloc0 (image, INT_STRING_SIZE);
6088 g_snprintf (name, INT_STRING_SIZE, "%d", num);
6092 // This is called by mono_class_from_generic_parameter_internal when a new class must be created.
6093 // pinfo is derived from param by the caller for us.
6095 make_generic_param_class (MonoGenericParam *param, MonoGenericParamInfo *pinfo)
6097 MonoClass *klass, **ptr;
6099 MonoGenericContainer *container = mono_generic_param_owner (param);
6100 g_assert_checked (container);
6102 MonoImage *image = get_image_for_container (container);
6103 gboolean is_mvar = container->is_method;
6104 gboolean is_anonymous = container->is_anonymous;
6106 klass = (MonoClass *)mono_image_alloc0 (image, sizeof (MonoClass));
6107 classes_size += sizeof (MonoClass);
6110 CHECKED_METADATA_WRITE_PTR_EXEMPT ( klass->name , pinfo->name );
6112 int n = mono_generic_param_num (param);
6113 CHECKED_METADATA_WRITE_PTR_LOCAL ( klass->name , make_generic_name_string (image, n) );
6117 CHECKED_METADATA_WRITE_PTR_EXEMPT ( klass->name_space , "" );
6118 } else if (is_mvar) {
6119 MonoMethod *omethod = container->owner.method;
6120 CHECKED_METADATA_WRITE_PTR_EXEMPT ( klass->name_space , (omethod && omethod->klass) ? omethod->klass->name_space : "" );
6122 MonoClass *oklass = container->owner.klass;
6123 CHECKED_METADATA_WRITE_PTR_EXEMPT ( klass->name_space , oklass ? oklass->name_space : "" );
6126 mono_profiler_class_event (klass, MONO_PROFILE_START_LOAD);
6128 // Count non-NULL items in pinfo->constraints
6131 for (ptr = pinfo->constraints; ptr && *ptr; ptr++, count++)
6135 if ((count > 0) && !MONO_CLASS_IS_INTERFACE (pinfo->constraints [0])) {
6136 CHECKED_METADATA_WRITE_PTR ( klass->parent , pinfo->constraints [0] );
6138 } else if (pinfo && pinfo->flags & GENERIC_PARAMETER_ATTRIBUTE_VALUE_TYPE_CONSTRAINT) {
6139 CHECKED_METADATA_WRITE_PTR ( klass->parent , mono_class_load_from_name (mono_defaults.corlib, "System", "ValueType") );
6141 CHECKED_METADATA_WRITE_PTR ( klass->parent , mono_defaults.object_class );
6144 if (count - pos > 0) {
6145 klass->interface_count = count - pos;
6146 CHECKED_METADATA_WRITE_PTR_LOCAL ( klass->interfaces , (MonoClass **)mono_image_alloc0 (image, sizeof (MonoClass *) * (count - pos)) );
6147 klass->interfaces_inited = TRUE;
6148 for (i = pos; i < count; i++)
6149 CHECKED_METADATA_WRITE_PTR ( klass->interfaces [i - pos] , pinfo->constraints [i] );
6152 CHECKED_METADATA_WRITE_PTR_EXEMPT ( klass->image , image );
6154 klass->inited = TRUE;
6155 CHECKED_METADATA_WRITE_PTR_LOCAL ( klass->cast_class , klass );
6156 CHECKED_METADATA_WRITE_PTR_LOCAL ( klass->element_class , klass );
6157 klass->flags = TYPE_ATTRIBUTE_PUBLIC;
6159 klass->byval_arg.type = is_mvar ? MONO_TYPE_MVAR : MONO_TYPE_VAR;
6160 klass->this_arg.type = klass->byval_arg.type;
6161 CHECKED_METADATA_WRITE_PTR ( klass->this_arg.data.generic_param , param );
6162 CHECKED_METADATA_WRITE_PTR ( klass->byval_arg.data.generic_param , param );
6163 klass->this_arg.byref = TRUE;
6165 /* We don't use type_token for VAR since only classes can use it (not arrays, pointer, VARs, etc) */
6166 klass->sizes.generic_param_token = pinfo ? pinfo->token : 0;
6168 /*Init these fields to sane values*/
6169 klass->min_align = 1;
6171 * This makes sure the the value size of this class is equal to the size of the types the gparam is
6172 * constrained to, the JIT depends on this.
6174 klass->instance_size = sizeof (MonoObject) + mono_type_stack_size_internal (&klass->byval_arg, NULL, TRUE);
6175 mono_memory_barrier ();
6176 klass->size_inited = 1;
6178 mono_class_setup_supertypes (klass);
6180 if (count - pos > 0) {
6181 mono_class_setup_vtable (klass->parent);
6182 if (mono_class_has_failure (klass->parent))
6183 mono_class_set_type_load_failure (klass, "Failed to setup parent interfaces");
6185 setup_interface_offsets (klass, klass->parent->vtable_size, TRUE);
6191 #define FAST_CACHE_SIZE 16
6194 * get_anon_gparam_class and set_anon_gparam_class are helpers for mono_class_from_generic_parameter_internal.
6195 * The latter will sometimes create MonoClasses for anonymous generic params. To prevent this being wasteful,
6196 * we cache the MonoClasses.
6197 * FIXME: It would be better to instead cache anonymous MonoGenericParams, and allow anonymous params to point directly to classes using the pklass field.
6198 * LOCKING: Takes the image lock depending on @take_lock.
6201 get_anon_gparam_class (MonoGenericParam *param, gboolean take_lock)
6203 int n = mono_generic_param_num (param);
6204 MonoImage *image = get_image_for_generic_param (param);
6205 gboolean is_mvar = mono_generic_param_owner (param)->is_method;
6206 MonoClass *klass = NULL;
6211 // For params with a small num and no constraints, we use a "fast" cache which does simple num lookup in an array.
6212 // For high numbers or constraints we have to use pointer hashes.
6213 if (param->gshared_constraint) {
6214 ht = is_mvar ? image->mvar_cache_constrained : image->var_cache_constrained;
6217 mono_image_lock (image);
6218 klass = (MonoClass *)g_hash_table_lookup (ht, param);
6220 mono_image_unlock (image);
6225 if (n < FAST_CACHE_SIZE) {
6227 return image->mvar_cache_fast ? image->mvar_cache_fast [n] : NULL;
6229 return image->var_cache_fast ? image->var_cache_fast [n] : NULL;
6231 ht = is_mvar ? image->mvar_cache_slow : image->var_cache_slow;
6234 mono_image_lock (image);
6235 klass = (MonoClass *)g_hash_table_lookup (ht, GINT_TO_POINTER (n));
6237 mono_image_unlock (image);
6244 * LOCKING: Image lock (param->image) must be held
6247 set_anon_gparam_class (MonoGenericParam *param, MonoClass *klass)
6249 int n = mono_generic_param_num (param);
6250 MonoImage *image = get_image_for_generic_param (param);
6251 gboolean is_mvar = mono_generic_param_owner (param)->is_method;
6255 if (param->gshared_constraint) {
6256 GHashTable *ht = is_mvar ? image->mvar_cache_constrained : image->var_cache_constrained;
6258 ht = g_hash_table_new ((GHashFunc)mono_metadata_generic_param_hash, (GEqualFunc)mono_metadata_generic_param_equal);
6259 mono_memory_barrier ();
6261 image->mvar_cache_constrained = ht;
6263 image->var_cache_constrained = ht;
6265 g_hash_table_insert (ht, param, klass);
6266 } else if (n < FAST_CACHE_SIZE) {
6268 /* Requires locking to avoid droping an already published class */
6269 if (!image->mvar_cache_fast)
6270 image->mvar_cache_fast = (MonoClass **)mono_image_alloc0 (image, sizeof (MonoClass*) * FAST_CACHE_SIZE);
6271 image->mvar_cache_fast [n] = klass;
6273 if (!image->var_cache_fast)
6274 image->var_cache_fast = (MonoClass **)mono_image_alloc0 (image, sizeof (MonoClass*) * FAST_CACHE_SIZE);
6275 image->var_cache_fast [n] = klass;
6278 GHashTable *ht = is_mvar ? image->mvar_cache_slow : image->var_cache_slow;
6280 ht = is_mvar ? image->mvar_cache_slow : image->var_cache_slow;
6282 ht = g_hash_table_new (NULL, NULL);
6283 mono_memory_barrier ();
6285 image->mvar_cache_slow = ht;
6287 image->var_cache_slow = ht;
6290 g_hash_table_insert (ht, GINT_TO_POINTER (n), klass);
6295 * LOCKING: Acquires the image lock (@image).
6298 mono_class_from_generic_parameter_internal (MonoGenericParam *param)
6300 MonoImage *image = get_image_for_generic_param (param);
6301 MonoGenericParamInfo *pinfo = mono_generic_param_info (param);
6302 MonoClass *klass, *klass2;
6304 // If a klass already exists for this object and is cached, return it.
6305 if (pinfo) // Non-anonymous
6306 klass = pinfo->pklass;
6308 klass = get_anon_gparam_class (param, TRUE);
6313 // Create a new klass
6314 klass = make_generic_param_class (param, pinfo);
6316 // Now we need to cache the klass we created.
6317 // But since we wait to grab the lock until after creating the klass, we need to check to make sure
6318 // another thread did not get in and cache a klass ahead of us. In that case, return their klass
6319 // and allow our newly-created klass object to just leak.
6320 mono_memory_barrier ();
6322 mono_image_lock (image);
6324 // Here "klass2" refers to the klass potentially created by the other thread.
6325 if (pinfo) // Repeat check from above
6326 klass2 = pinfo->pklass;
6328 klass2 = get_anon_gparam_class (param, FALSE);
6335 pinfo->pklass = klass;
6337 set_anon_gparam_class (param, klass);
6339 mono_image_unlock (image);
6341 /* FIXME: Should this go inside 'make_generic_param_klass'? */
6343 mono_profiler_class_loaded (klass2, MONO_PROFILE_FAILED); // Alert profiler about botched class create
6345 mono_profiler_class_loaded (klass, MONO_PROFILE_OK);
6351 * mono_class_from_generic_parameter:
6352 * @param: Parameter to find/construct a class for.
6353 * @arg2: Is ignored.
6354 * @arg3: Is ignored.
6357 mono_class_from_generic_parameter (MonoGenericParam *param, MonoImage *arg2 G_GNUC_UNUSED, gboolean arg3 G_GNUC_UNUSED)
6359 return mono_class_from_generic_parameter_internal (param);
6364 mono_ptr_class_get (MonoType *type)
6367 MonoClass *el_class;
6371 el_class = mono_class_from_mono_type (type);
6372 image = el_class->image;
6374 mono_image_lock (image);
6375 if (image->ptr_cache) {
6376 if ((result = (MonoClass *)g_hash_table_lookup (image->ptr_cache, el_class))) {
6377 mono_image_unlock (image);
6381 mono_image_unlock (image);
6383 result = (MonoClass *)mono_image_alloc0 (image, sizeof (MonoClass));
6385 classes_size += sizeof (MonoClass);
6387 result->parent = NULL; /* no parent for PTR types */
6388 result->name_space = el_class->name_space;
6389 name = g_strdup_printf ("%s*", el_class->name);
6390 result->name = mono_image_strdup (image, name);
6393 mono_profiler_class_event (result, MONO_PROFILE_START_LOAD);
6395 result->image = el_class->image;
6396 result->inited = TRUE;
6397 result->flags = TYPE_ATTRIBUTE_CLASS | (el_class->flags & TYPE_ATTRIBUTE_VISIBILITY_MASK);
6398 result->instance_size = sizeof (MonoObject) + sizeof (gpointer);
6399 result->cast_class = result->element_class = el_class;
6400 result->blittable = TRUE;
6402 result->byval_arg.type = MONO_TYPE_PTR;
6403 result->this_arg.type = result->byval_arg.type;
6404 result->this_arg.data.type = result->byval_arg.data.type = &result->element_class->byval_arg;
6405 result->this_arg.byref = TRUE;
6407 mono_class_setup_supertypes (result);
6409 mono_image_lock (image);
6410 if (image->ptr_cache) {
6412 if ((result2 = (MonoClass *)g_hash_table_lookup (image->ptr_cache, el_class))) {
6413 mono_image_unlock (image);
6414 mono_profiler_class_loaded (result, MONO_PROFILE_FAILED);
6418 image->ptr_cache = g_hash_table_new (mono_aligned_addr_hash, NULL);
6420 g_hash_table_insert (image->ptr_cache, el_class, result);
6421 mono_image_unlock (image);
6423 mono_profiler_class_loaded (result, MONO_PROFILE_OK);
6429 mono_fnptr_class_get (MonoMethodSignature *sig)
6432 static GHashTable *ptr_hash = NULL;
6434 /* FIXME: These should be allocate from a mempool as well, but which one ? */
6436 mono_loader_lock ();
6439 ptr_hash = g_hash_table_new (mono_aligned_addr_hash, NULL);
6441 if ((result = (MonoClass *)g_hash_table_lookup (ptr_hash, sig))) {
6442 mono_loader_unlock ();
6445 result = g_new0 (MonoClass, 1);
6447 result->parent = NULL; /* no parent for PTR types */
6448 result->name_space = "System";
6449 result->name = "MonoFNPtrFakeClass";
6451 mono_profiler_class_event (result, MONO_PROFILE_START_LOAD);
6453 result->image = mono_defaults.corlib; /* need to fix... */
6454 result->inited = TRUE;
6455 result->flags = TYPE_ATTRIBUTE_CLASS; /* | (el_class->flags & TYPE_ATTRIBUTE_VISIBILITY_MASK); */
6456 result->instance_size = sizeof (MonoObject) + sizeof (gpointer);
6457 result->cast_class = result->element_class = result;
6458 result->blittable = TRUE;
6460 result->byval_arg.type = MONO_TYPE_FNPTR;
6461 result->this_arg.type = result->byval_arg.type;
6462 result->this_arg.data.method = result->byval_arg.data.method = sig;
6463 result->this_arg.byref = TRUE;
6464 result->blittable = TRUE;
6466 mono_class_setup_supertypes (result);
6468 g_hash_table_insert (ptr_hash, sig, result);
6470 mono_loader_unlock ();
6472 mono_profiler_class_loaded (result, MONO_PROFILE_OK);
6478 * mono_class_from_mono_type:
6479 * @type: describes the type to return
6481 * This returns a MonoClass for the specified MonoType, the value is never NULL.
6484 mono_class_from_mono_type (MonoType *type)
6486 switch (type->type) {
6487 case MONO_TYPE_OBJECT:
6488 return type->data.klass? type->data.klass: mono_defaults.object_class;
6489 case MONO_TYPE_VOID:
6490 return type->data.klass? type->data.klass: mono_defaults.void_class;
6491 case MONO_TYPE_BOOLEAN:
6492 return type->data.klass? type->data.klass: mono_defaults.boolean_class;
6493 case MONO_TYPE_CHAR:
6494 return type->data.klass? type->data.klass: mono_defaults.char_class;
6496 return type->data.klass? type->data.klass: mono_defaults.sbyte_class;
6498 return type->data.klass? type->data.klass: mono_defaults.byte_class;
6500 return type->data.klass? type->data.klass: mono_defaults.int16_class;
6502 return type->data.klass? type->data.klass: mono_defaults.uint16_class;
6504 return type->data.klass? type->data.klass: mono_defaults.int32_class;
6506 return type->data.klass? type->data.klass: mono_defaults.uint32_class;
6508 return type->data.klass? type->data.klass: mono_defaults.int_class;
6510 return type->data.klass? type->data.klass: mono_defaults.uint_class;
6512 return type->data.klass? type->data.klass: mono_defaults.int64_class;
6514 return type->data.klass? type->data.klass: mono_defaults.uint64_class;
6516 return type->data.klass? type->data.klass: mono_defaults.single_class;
6518 return type->data.klass? type->data.klass: mono_defaults.double_class;
6519 case MONO_TYPE_STRING:
6520 return type->data.klass? type->data.klass: mono_defaults.string_class;
6521 case MONO_TYPE_TYPEDBYREF:
6522 return type->data.klass? type->data.klass: mono_defaults.typed_reference_class;
6523 case MONO_TYPE_ARRAY:
6524 return mono_bounded_array_class_get (type->data.array->eklass, type->data.array->rank, TRUE);
6526 return mono_ptr_class_get (type->data.type);
6527 case MONO_TYPE_FNPTR:
6528 return mono_fnptr_class_get (type->data.method);
6529 case MONO_TYPE_SZARRAY:
6530 return mono_array_class_get (type->data.klass, 1);
6531 case MONO_TYPE_CLASS:
6532 case MONO_TYPE_VALUETYPE:
6533 return type->data.klass;
6534 case MONO_TYPE_GENERICINST:
6535 return mono_generic_class_get_class (type->data.generic_class);
6536 case MONO_TYPE_MVAR:
6538 return mono_class_from_generic_parameter_internal (type->data.generic_param);
6540 g_warning ("mono_class_from_mono_type: implement me 0x%02x\n", type->type);
6541 g_assert_not_reached ();
6544 // Yes, this returns NULL, even if it is documented as not doing so, but there
6545 // is no way for the code to make it this far, due to the assert above.
6550 * mono_type_retrieve_from_typespec
6551 * @image: context where the image is created
6552 * @type_spec: typespec token
6553 * @context: the generic context used to evaluate generic instantiations in
6556 mono_type_retrieve_from_typespec (MonoImage *image, guint32 type_spec, MonoGenericContext *context, gboolean *did_inflate, MonoError *error)
6558 MonoType *t = mono_type_create_from_typespec_checked (image, type_spec, error);
6560 *did_inflate = FALSE;
6565 if (context && (context->class_inst || context->method_inst)) {
6566 MonoType *inflated = inflate_generic_type (NULL, t, context, error);
6568 if (!mono_error_ok (error)) {
6574 *did_inflate = TRUE;
6581 * mono_class_create_from_typespec
6582 * @image: context where the image is created
6583 * @type_spec: typespec token
6584 * @context: the generic context used to evaluate generic instantiations in
6587 mono_class_create_from_typespec (MonoImage *image, guint32 type_spec, MonoGenericContext *context, MonoError *error)
6590 gboolean inflated = FALSE;
6591 MonoType *t = mono_type_retrieve_from_typespec (image, type_spec, context, &inflated, error);
6592 return_val_if_nok (error, NULL);
6593 ret = mono_class_from_mono_type (t);
6595 mono_metadata_free_type (t);
6600 * mono_bounded_array_class_get:
6601 * @element_class: element class
6602 * @rank: the dimension of the array class
6603 * @bounded: whenever the array has non-zero bounds
6605 * Returns: A class object describing the array with element type @element_type and
6609 mono_bounded_array_class_get (MonoClass *eclass, guint32 rank, gboolean bounded)
6613 MonoClass *parent = NULL;
6614 GSList *list, *rootlist = NULL;
6618 g_assert (rank <= 255);
6621 /* bounded only matters for one-dimensional arrays */
6624 image = eclass->image;
6626 if (rank == 1 && !bounded) {
6628 * This case is very frequent not just during compilation because of calls
6629 * from mono_class_from_mono_type (), mono_array_new (),
6630 * Array:CreateInstance (), etc, so use a separate cache + a separate lock.
6632 mono_os_mutex_lock (&image->szarray_cache_lock);
6633 if (!image->szarray_cache)
6634 image->szarray_cache = g_hash_table_new (mono_aligned_addr_hash, NULL);
6635 klass = (MonoClass *)g_hash_table_lookup (image->szarray_cache, eclass);
6636 mono_os_mutex_unlock (&image->szarray_cache_lock);
6640 mono_loader_lock ();
6642 mono_loader_lock ();
6644 if (!image->array_cache)
6645 image->array_cache = g_hash_table_new (mono_aligned_addr_hash, NULL);
6647 if ((rootlist = list = (GSList *)g_hash_table_lookup (image->array_cache, eclass))) {
6648 for (; list; list = list->next) {
6649 klass = (MonoClass *)list->data;
6650 if ((klass->rank == rank) && (klass->byval_arg.type == (((rank > 1) || bounded) ? MONO_TYPE_ARRAY : MONO_TYPE_SZARRAY))) {
6651 mono_loader_unlock ();
6658 parent = mono_defaults.array_class;
6659 if (!parent->inited)
6660 mono_class_init (parent);
6662 klass = (MonoClass *)mono_image_alloc0 (image, sizeof (MonoClass));
6664 klass->image = image;
6665 klass->name_space = eclass->name_space;
6666 nsize = strlen (eclass->name);
6667 name = (char *)g_malloc (nsize + 2 + rank + 1);
6668 memcpy (name, eclass->name, nsize);
6671 memset (name + nsize + 1, ',', rank - 1);
6673 name [nsize + rank] = '*';
6674 name [nsize + rank + bounded] = ']';
6675 name [nsize + rank + bounded + 1] = 0;
6676 klass->name = mono_image_strdup (image, name);
6679 mono_profiler_class_event (klass, MONO_PROFILE_START_LOAD);
6681 classes_size += sizeof (MonoClass);
6683 klass->type_token = 0;
6684 /* all arrays are marked serializable and sealed, bug #42779 */
6685 klass->flags = TYPE_ATTRIBUTE_CLASS | TYPE_ATTRIBUTE_SERIALIZABLE | TYPE_ATTRIBUTE_SEALED | TYPE_ATTRIBUTE_PUBLIC;
6686 klass->parent = parent;
6687 klass->instance_size = mono_class_instance_size (klass->parent);
6689 if (eclass->byval_arg.type == MONO_TYPE_TYPEDBYREF || eclass->byval_arg.type == MONO_TYPE_VOID) {
6690 /*Arrays of those two types are invalid.*/
6691 MonoError prepared_error;
6692 mono_error_init (&prepared_error);
6693 mono_error_set_invalid_program (&prepared_error, "Arrays of void or System.TypedReference types are invalid.");
6694 mono_class_set_failure (klass, mono_error_box (&prepared_error, klass->image));
6695 mono_error_cleanup (&prepared_error);
6696 } else if (eclass->enumtype && !mono_class_enum_basetype (eclass)) {
6697 if (!eclass->ref_info_handle || eclass->wastypebuilder) {
6698 g_warning ("Only incomplete TypeBuilder objects are allowed to be an enum without base_type");
6699 g_assert (eclass->ref_info_handle && !eclass->wastypebuilder);
6701 /* element_size -1 is ok as this is not an instantitable type*/
6702 klass->sizes.element_size = -1;
6704 klass->sizes.element_size = mono_class_array_element_size (eclass);
6706 mono_class_setup_supertypes (klass);
6708 if (eclass->generic_class)
6709 mono_class_init (eclass);
6710 if (!eclass->size_inited)
6711 mono_class_setup_fields (eclass);
6712 mono_class_set_type_load_failure_causedby_class (klass, eclass, "Could not load array element type");
6713 /*FIXME we fail the array type, but we have to let other fields be set.*/
6715 klass->has_references = MONO_TYPE_IS_REFERENCE (&eclass->byval_arg) || eclass->has_references? TRUE: FALSE;
6719 if (eclass->enumtype)
6720 klass->cast_class = eclass->element_class;
6722 klass->cast_class = eclass;
6724 switch (klass->cast_class->byval_arg.type) {
6726 klass->cast_class = mono_defaults.byte_class;
6729 klass->cast_class = mono_defaults.int16_class;
6732 #if SIZEOF_VOID_P == 4
6736 klass->cast_class = mono_defaults.int32_class;
6739 #if SIZEOF_VOID_P == 8
6743 klass->cast_class = mono_defaults.int64_class;
6749 klass->element_class = eclass;
6751 if ((rank > 1) || bounded) {
6752 MonoArrayType *at = (MonoArrayType *)mono_image_alloc0 (image, sizeof (MonoArrayType));
6753 klass->byval_arg.type = MONO_TYPE_ARRAY;
6754 klass->byval_arg.data.array = at;
6755 at->eklass = eclass;
6757 /* FIXME: complete.... */
6759 klass->byval_arg.type = MONO_TYPE_SZARRAY;
6760 klass->byval_arg.data.klass = eclass;
6762 klass->this_arg = klass->byval_arg;
6763 klass->this_arg.byref = 1;
6765 klass->generic_container = eclass->generic_container;
6767 if (rank == 1 && !bounded) {
6768 MonoClass *prev_class;
6770 mono_os_mutex_lock (&image->szarray_cache_lock);
6771 prev_class = (MonoClass *)g_hash_table_lookup (image->szarray_cache, eclass);
6773 /* Someone got in before us */
6776 g_hash_table_insert (image->szarray_cache, eclass, klass);
6777 mono_os_mutex_unlock (&image->szarray_cache_lock);
6779 list = g_slist_append (rootlist, klass);
6780 g_hash_table_insert (image->array_cache, eclass, list);
6783 mono_loader_unlock ();
6785 mono_profiler_class_loaded (klass, MONO_PROFILE_OK);
6791 * mono_array_class_get:
6792 * @element_class: element class
6793 * @rank: the dimension of the array class
6795 * Returns: A class object describing the array with element type @element_type and
6799 mono_array_class_get (MonoClass *eclass, guint32 rank)
6801 return mono_bounded_array_class_get (eclass, rank, FALSE);
6805 * mono_class_instance_size:
6808 * Use to get the size of a class in bytes.
6810 * Returns: The size of an object instance
6813 mono_class_instance_size (MonoClass *klass)
6815 if (!klass->size_inited)
6816 mono_class_init (klass);
6818 return klass->instance_size;
6822 * mono_class_min_align:
6825 * Use to get the computed minimum alignment requirements for the specified class.
6827 * Returns: minimm alignment requirements
6830 mono_class_min_align (MonoClass *klass)
6832 if (!klass->size_inited)
6833 mono_class_init (klass);
6835 return klass->min_align;
6839 * mono_class_value_size:
6842 * This function is used for value types, and return the
6843 * space and the alignment to store that kind of value object.
6845 * Returns: the size of a value of kind @klass
6848 mono_class_value_size (MonoClass *klass, guint32 *align)
6852 /* fixme: check disable, because we still have external revereces to
6853 * mscorlib and Dummy Objects
6855 /*g_assert (klass->valuetype);*/
6857 size = mono_class_instance_size (klass) - sizeof (MonoObject);
6860 *align = klass->min_align;
6866 * mono_class_data_size:
6869 * Returns: The size of the static class data
6872 mono_class_data_size (MonoClass *klass)
6875 mono_class_init (klass);
6876 /* This can happen with dynamically created types */
6877 if (!klass->fields_inited)
6878 mono_class_setup_fields (klass);
6880 /* in arrays, sizes.class_size is unioned with element_size
6881 * and arrays have no static fields
6885 return klass->sizes.class_size;
6889 * Auxiliary routine to mono_class_get_field
6891 * Takes a field index instead of a field token.
6893 static MonoClassField *
6894 mono_class_get_field_idx (MonoClass *klass, int idx)
6896 mono_class_setup_fields (klass);
6897 if (mono_class_has_failure (klass))
6901 if (klass->image->uncompressed_metadata) {
6903 * klass->field.first points to the FieldPtr table, while idx points into the
6904 * Field table, so we have to do a search.
6906 /*FIXME this is broken for types with multiple fields with the same name.*/
6907 const char *name = mono_metadata_string_heap (klass->image, mono_metadata_decode_row_col (&klass->image->tables [MONO_TABLE_FIELD], idx, MONO_FIELD_NAME));
6910 for (i = 0; i < klass->field.count; ++i)
6911 if (mono_field_get_name (&klass->fields [i]) == name)
6912 return &klass->fields [i];
6913 g_assert_not_reached ();
6915 if (klass->field.count) {
6916 if ((idx >= klass->field.first) && (idx < klass->field.first + klass->field.count)){
6917 return &klass->fields [idx - klass->field.first];
6921 klass = klass->parent;
6927 * mono_class_get_field:
6928 * @class: the class to lookup the field.
6929 * @field_token: the field token
6931 * Returns: A MonoClassField representing the type and offset of
6932 * the field, or a NULL value if the field does not belong to this
6936 mono_class_get_field (MonoClass *klass, guint32 field_token)
6938 int idx = mono_metadata_token_index (field_token);
6940 g_assert (mono_metadata_token_code (field_token) == MONO_TOKEN_FIELD_DEF);
6942 return mono_class_get_field_idx (klass, idx - 1);
6946 * mono_class_get_field_from_name:
6947 * @klass: the class to lookup the field.
6948 * @name: the field name
6950 * Search the class @klass and it's parents for a field with the name @name.
6952 * Returns: The MonoClassField pointer of the named field or NULL
6955 mono_class_get_field_from_name (MonoClass *klass, const char *name)
6957 return mono_class_get_field_from_name_full (klass, name, NULL);
6961 * mono_class_get_field_from_name_full:
6962 * @klass: the class to lookup the field.
6963 * @name: the field name
6964 * @type: the type of the fields. This optional.
6966 * Search the class @klass and it's parents for a field with the name @name and type @type.
6968 * If @klass is an inflated generic type, the type comparison is done with the equivalent field
6969 * of its generic type definition.
6971 * Returns: The MonoClassField pointer of the named field or NULL
6974 mono_class_get_field_from_name_full (MonoClass *klass, const char *name, MonoType *type)
6978 mono_class_setup_fields (klass);
6979 if (mono_class_has_failure (klass))
6983 for (i = 0; i < klass->field.count; ++i) {
6984 MonoClassField *field = &klass->fields [i];
6986 if (strcmp (name, mono_field_get_name (field)) != 0)
6990 MonoType *field_type = mono_metadata_get_corresponding_field_from_generic_type_definition (field)->type;
6991 if (!mono_metadata_type_equal_full (type, field_type, TRUE))
6996 klass = klass->parent;
7002 * mono_class_get_field_token:
7003 * @field: the field we need the token of
7005 * Get the token of a field. Note that the tokesn is only valid for the image
7006 * the field was loaded from. Don't use this function for fields in dynamic types.
7008 * Returns: The token representing the field in the image it was loaded from.
7011 mono_class_get_field_token (MonoClassField *field)
7013 MonoClass *klass = field->parent;
7016 mono_class_setup_fields (klass);
7021 for (i = 0; i < klass->field.count; ++i) {
7022 if (&klass->fields [i] == field) {
7023 int idx = klass->field.first + i + 1;
7025 if (klass->image->uncompressed_metadata)
7026 idx = mono_metadata_translate_token_index (klass->image, MONO_TABLE_FIELD, idx);
7027 return mono_metadata_make_token (MONO_TABLE_FIELD, idx);
7030 klass = klass->parent;
7033 g_assert_not_reached ();
7038 mono_field_get_index (MonoClassField *field)
7040 int index = field - field->parent->fields;
7042 g_assert (index >= 0 && index < field->parent->field.count);
7048 * mono_class_get_field_default_value:
7050 * Return the default value of the field as a pointer into the metadata blob.
7053 mono_class_get_field_default_value (MonoClassField *field, MonoTypeEnum *def_type)
7056 guint32 constant_cols [MONO_CONSTANT_SIZE];
7058 MonoClass *klass = field->parent;
7060 g_assert (field->type->attrs & FIELD_ATTRIBUTE_HAS_DEFAULT);
7062 if (!klass->ext || !klass->ext->field_def_values) {
7063 MonoFieldDefaultValue *def_values;
7065 mono_class_alloc_ext (klass);
7067 def_values = (MonoFieldDefaultValue *)mono_class_alloc0 (klass, sizeof (MonoFieldDefaultValue) * klass->field.count);
7069 mono_image_lock (klass->image);
7070 mono_memory_barrier ();
7071 if (!klass->ext->field_def_values)
7072 klass->ext->field_def_values = def_values;
7073 mono_image_unlock (klass->image);
7076 field_index = mono_field_get_index (field);
7078 if (!klass->ext->field_def_values [field_index].data) {
7079 cindex = mono_metadata_get_constant_index (field->parent->image, mono_class_get_field_token (field), 0);
7083 g_assert (!(field->type->attrs & FIELD_ATTRIBUTE_HAS_FIELD_RVA));
7085 mono_metadata_decode_row (&field->parent->image->tables [MONO_TABLE_CONSTANT], cindex - 1, constant_cols, MONO_CONSTANT_SIZE);
7086 klass->ext->field_def_values [field_index].def_type = (MonoTypeEnum)constant_cols [MONO_CONSTANT_TYPE];
7087 klass->ext->field_def_values [field_index].data = (const char *)mono_metadata_blob_heap (field->parent->image, constant_cols [MONO_CONSTANT_VALUE]);
7090 *def_type = klass->ext->field_def_values [field_index].def_type;
7091 return klass->ext->field_def_values [field_index].data;
7095 mono_property_get_index (MonoProperty *prop)
7097 int index = prop - prop->parent->ext->properties;
7099 g_assert (index >= 0 && index < prop->parent->ext->property.count);
7105 * mono_class_get_property_default_value:
7107 * Return the default value of the field as a pointer into the metadata blob.
7110 mono_class_get_property_default_value (MonoProperty *property, MonoTypeEnum *def_type)
7113 guint32 constant_cols [MONO_CONSTANT_SIZE];
7114 MonoClass *klass = property->parent;
7116 g_assert (property->attrs & PROPERTY_ATTRIBUTE_HAS_DEFAULT);
7118 * We don't cache here because it is not used by C# so it's quite rare, but
7119 * we still do the lookup in klass->ext because that is where the data
7120 * is stored for dynamic assemblies.
7123 if (image_is_dynamic (klass->image)) {
7124 int prop_index = mono_property_get_index (property);
7125 if (klass->ext->prop_def_values && klass->ext->prop_def_values [prop_index].data) {
7126 *def_type = klass->ext->prop_def_values [prop_index].def_type;
7127 return klass->ext->prop_def_values [prop_index].data;
7131 cindex = mono_metadata_get_constant_index (klass->image, mono_class_get_property_token (property), 0);
7135 mono_metadata_decode_row (&klass->image->tables [MONO_TABLE_CONSTANT], cindex - 1, constant_cols, MONO_CONSTANT_SIZE);
7136 *def_type = (MonoTypeEnum)constant_cols [MONO_CONSTANT_TYPE];
7137 return (const char *)mono_metadata_blob_heap (klass->image, constant_cols [MONO_CONSTANT_VALUE]);
7141 mono_class_get_event_token (MonoEvent *event)
7143 MonoClass *klass = event->parent;
7148 for (i = 0; i < klass->ext->event.count; ++i) {
7149 if (&klass->ext->events [i] == event)
7150 return mono_metadata_make_token (MONO_TABLE_EVENT, klass->ext->event.first + i + 1);
7153 klass = klass->parent;
7156 g_assert_not_reached ();
7161 * mono_class_get_property_from_name:
7163 * @name: name of the property to lookup in the specified class
7165 * Use this method to lookup a property in a class
7166 * Returns: the MonoProperty with the given name, or NULL if the property
7167 * does not exist on the @klass.
7170 mono_class_get_property_from_name (MonoClass *klass, const char *name)
7174 gpointer iter = NULL;
7175 while ((p = mono_class_get_properties (klass, &iter))) {
7176 if (! strcmp (name, p->name))
7179 klass = klass->parent;
7185 * mono_class_get_property_token:
7186 * @prop: MonoProperty to query
7188 * Returns: The ECMA token for the specified property.
7191 mono_class_get_property_token (MonoProperty *prop)
7193 MonoClass *klass = prop->parent;
7197 gpointer iter = NULL;
7198 while ((p = mono_class_get_properties (klass, &iter))) {
7199 if (&klass->ext->properties [i] == prop)
7200 return mono_metadata_make_token (MONO_TABLE_PROPERTY, klass->ext->property.first + i + 1);
7204 klass = klass->parent;
7207 g_assert_not_reached ();
7212 mono_class_name_from_token (MonoImage *image, guint32 type_token)
7214 const char *name, *nspace;
7215 if (image_is_dynamic (image))
7216 return g_strdup_printf ("DynamicType 0x%08x", type_token);
7218 switch (type_token & 0xff000000){
7219 case MONO_TOKEN_TYPE_DEF: {
7220 guint32 cols [MONO_TYPEDEF_SIZE];
7221 MonoTableInfo *tt = &image->tables [MONO_TABLE_TYPEDEF];
7222 guint tidx = mono_metadata_token_index (type_token);
7224 if (tidx > tt->rows)
7225 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
7227 mono_metadata_decode_row (tt, tidx - 1, cols, MONO_TYPEDEF_SIZE);
7228 name = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
7229 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
7230 if (strlen (nspace) == 0)
7231 return g_strdup_printf ("%s", name);
7233 return g_strdup_printf ("%s.%s", nspace, name);
7236 case MONO_TOKEN_TYPE_REF: {
7238 guint32 cols [MONO_TYPEREF_SIZE];
7239 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEREF];
7240 guint tidx = mono_metadata_token_index (type_token);
7243 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
7245 if (!mono_verifier_verify_typeref_row (image, tidx - 1, &error)) {
7246 char *msg = g_strdup_printf ("Invalid type token 0x%08x due to '%s'", type_token, mono_error_get_message (&error));
7247 mono_error_cleanup (&error);
7251 mono_metadata_decode_row (t, tidx-1, cols, MONO_TYPEREF_SIZE);
7252 name = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAME]);
7253 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAMESPACE]);
7254 if (strlen (nspace) == 0)
7255 return g_strdup_printf ("%s", name);
7257 return g_strdup_printf ("%s.%s", nspace, name);
7260 case MONO_TOKEN_TYPE_SPEC:
7261 return g_strdup_printf ("Typespec 0x%08x", type_token);
7263 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
7268 mono_assembly_name_from_token (MonoImage *image, guint32 type_token)
7270 if (image_is_dynamic (image))
7271 return g_strdup_printf ("DynamicAssembly %s", image->name);
7273 switch (type_token & 0xff000000){
7274 case MONO_TOKEN_TYPE_DEF:
7275 if (image->assembly)
7276 return mono_stringify_assembly_name (&image->assembly->aname);
7277 else if (image->assembly_name)
7278 return g_strdup (image->assembly_name);
7279 return g_strdup_printf ("%s", image->name ? image->name : "[Could not resolve assembly name");
7280 case MONO_TOKEN_TYPE_REF: {
7282 MonoAssemblyName aname;
7283 guint32 cols [MONO_TYPEREF_SIZE];
7284 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEREF];
7285 guint32 idx = mono_metadata_token_index (type_token);
7288 return g_strdup_printf ("Invalid type token 0x%08x", type_token);
7290 if (!mono_verifier_verify_typeref_row (image, idx - 1, &error)) {
7291 char *msg = g_strdup_printf ("Invalid type token 0x%08x due to '%s'", type_token, mono_error_get_message (&error));
7292 mono_error_cleanup (&error);
7295 mono_metadata_decode_row (t, idx-1, cols, MONO_TYPEREF_SIZE);
7297 idx = cols [MONO_TYPEREF_SCOPE] >> MONO_RESOLUTION_SCOPE_BITS;
7298 switch (cols [MONO_TYPEREF_SCOPE] & MONO_RESOLUTION_SCOPE_MASK) {
7299 case MONO_RESOLUTION_SCOPE_MODULE:
7301 return g_strdup ("");
7302 case MONO_RESOLUTION_SCOPE_MODULEREF:
7304 return g_strdup ("");
7305 case MONO_RESOLUTION_SCOPE_TYPEREF:
7307 return g_strdup ("");
7308 case MONO_RESOLUTION_SCOPE_ASSEMBLYREF:
7309 mono_assembly_get_assemblyref (image, idx - 1, &aname);
7310 return mono_stringify_assembly_name (&aname);
7312 g_assert_not_reached ();
7316 case MONO_TOKEN_TYPE_SPEC:
7318 return g_strdup ("");
7320 g_assert_not_reached ();
7327 * mono_class_get_full:
7328 * @image: the image where the class resides
7329 * @type_token: the token for the class
7330 * @context: the generic context used to evaluate generic instantiations in
7331 * @deprecated: Functions that expose MonoGenericContext are going away in mono 4.0
7333 * Returns: The MonoClass that represents @type_token in @image
7336 mono_class_get_full (MonoImage *image, guint32 type_token, MonoGenericContext *context)
7340 klass = mono_class_get_checked (image, type_token, &error);
7342 if (klass && context && mono_metadata_token_table (type_token) == MONO_TABLE_TYPESPEC)
7343 klass = mono_class_inflate_generic_class_checked (klass, context, &error);
7345 g_assert (mono_error_ok (&error)); /* FIXME deprecate this function and forbit the runtime from using it. */
7351 mono_class_get_and_inflate_typespec_checked (MonoImage *image, guint32 type_token, MonoGenericContext *context, MonoError *error)
7355 mono_error_init (error);
7356 klass = mono_class_get_checked (image, type_token, error);
7358 if (klass && context && mono_metadata_token_table (type_token) == MONO_TABLE_TYPESPEC)
7359 klass = mono_class_inflate_generic_class_checked (klass, context, error);
7364 * mono_class_get_checked:
7365 * @image: the image where the class resides
7366 * @type_token: the token for the class
7367 * @error: error object to return any error
7369 * Returns: The MonoClass that represents @type_token in @image, or NULL on error.
7372 mono_class_get_checked (MonoImage *image, guint32 type_token, MonoError *error)
7374 MonoClass *klass = NULL;
7376 mono_error_init (error);
7378 if (image_is_dynamic (image)) {
7379 int table = mono_metadata_token_table (type_token);
7381 if (table != MONO_TABLE_TYPEDEF && table != MONO_TABLE_TYPEREF && table != MONO_TABLE_TYPESPEC) {
7382 mono_error_set_bad_image (error, image,"Bad token table for dynamic image: %x", table);
7385 klass = (MonoClass *)mono_lookup_dynamic_token (image, type_token, NULL, error);
7389 switch (type_token & 0xff000000){
7390 case MONO_TOKEN_TYPE_DEF:
7391 klass = mono_class_create_from_typedef (image, type_token, error);
7393 case MONO_TOKEN_TYPE_REF:
7394 klass = mono_class_from_typeref_checked (image, type_token, error);
7396 case MONO_TOKEN_TYPE_SPEC:
7397 klass = mono_class_create_from_typespec (image, type_token, NULL, error);
7400 mono_error_set_bad_image (error, image, "Unknown type token %x", type_token & 0xff000000);
7404 /* Generic case, should be avoided for when a better error is possible. */
7405 if (!klass && mono_error_ok (error)) {
7406 char *name = mono_class_name_from_token (image, type_token);
7407 char *assembly = mono_assembly_name_from_token (image, type_token);
7408 mono_error_set_type_load_name (error, name, assembly, "Could not resolve type with token %08x", type_token);
7416 * mono_type_get_checked:
7417 * @image: the image where the type resides
7418 * @type_token: the token for the type
7419 * @context: the generic context used to evaluate generic instantiations in
7420 * @error: Error handling context
7422 * This functions exists to fullfill the fact that sometimes it's desirable to have access to the
7424 * Returns: The MonoType that represents @type_token in @image
7427 mono_type_get_checked (MonoImage *image, guint32 type_token, MonoGenericContext *context, MonoError *error)
7429 MonoType *type = NULL;
7430 gboolean inflated = FALSE;
7432 mono_error_init (error);
7434 //FIXME: this will not fix the very issue for which mono_type_get_full exists -but how to do it then?
7435 if (image_is_dynamic (image)) {
7436 MonoClass *klass = (MonoClass *)mono_lookup_dynamic_token (image, type_token, context, error);
7437 return_val_if_nok (error, NULL);
7438 return mono_class_get_type (klass);
7441 if ((type_token & 0xff000000) != MONO_TOKEN_TYPE_SPEC) {
7442 MonoClass *klass = mono_class_get_checked (image, type_token, error);
7449 return mono_class_get_type (klass);
7452 type = mono_type_retrieve_from_typespec (image, type_token, context, &inflated, error);
7459 MonoType *tmp = type;
7460 type = mono_class_get_type (mono_class_from_mono_type (type));
7461 /* FIXME: This is a workaround fo the fact that a typespec token sometimes reference to the generic type definition.
7462 * A MonoClass::byval_arg of a generic type definion has type CLASS.
7463 * Some parts of mono create a GENERICINST to reference a generic type definition and this generates confict with byval_arg.
7465 * The long term solution is to chaise this places and make then set MonoType::type correctly.
7467 if (type->type != tmp->type)
7470 mono_metadata_free_type (tmp);
7477 * @image: image where the class token will be looked up.
7478 * @type_token: a type token from the image
7480 * Returns the MonoClass with the given @type_token on the @image
7483 mono_class_get (MonoImage *image, guint32 type_token)
7485 return mono_class_get_full (image, type_token, NULL);
7489 * mono_image_init_name_cache:
7491 * Initializes the class name cache stored in image->name_cache.
7493 * LOCKING: Acquires the corresponding image lock.
7496 mono_image_init_name_cache (MonoImage *image)
7498 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEDEF];
7499 guint32 cols [MONO_TYPEDEF_SIZE];
7502 guint32 i, visib, nspace_index;
7503 GHashTable *name_cache2, *nspace_table, *the_name_cache;
7505 if (image->name_cache)
7508 the_name_cache = g_hash_table_new (g_str_hash, g_str_equal);
7510 if (image_is_dynamic (image)) {
7511 mono_image_lock (image);
7512 if (image->name_cache) {
7513 /* Somebody initialized it before us */
7514 g_hash_table_destroy (the_name_cache);
7516 mono_atomic_store_release (&image->name_cache, the_name_cache);
7518 mono_image_unlock (image);
7522 /* Temporary hash table to avoid lookups in the nspace_table */
7523 name_cache2 = g_hash_table_new (NULL, NULL);
7525 for (i = 1; i <= t->rows; ++i) {
7526 mono_metadata_decode_row (t, i - 1, cols, MONO_TYPEDEF_SIZE);
7527 visib = cols [MONO_TYPEDEF_FLAGS] & TYPE_ATTRIBUTE_VISIBILITY_MASK;
7529 * Nested types are accessed from the nesting name. We use the fact that nested types use different visibility flags
7530 * than toplevel types, thus avoiding the need to grovel through the NESTED_TYPE table
7532 if (visib >= TYPE_ATTRIBUTE_NESTED_PUBLIC && visib <= TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM)
7534 name = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
7535 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
7537 nspace_index = cols [MONO_TYPEDEF_NAMESPACE];
7538 nspace_table = (GHashTable *)g_hash_table_lookup (name_cache2, GUINT_TO_POINTER (nspace_index));
7539 if (!nspace_table) {
7540 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
7541 g_hash_table_insert (the_name_cache, (char*)nspace, nspace_table);
7542 g_hash_table_insert (name_cache2, GUINT_TO_POINTER (nspace_index),
7545 g_hash_table_insert (nspace_table, (char *) name, GUINT_TO_POINTER (i));
7548 /* Load type names from EXPORTEDTYPES table */
7550 MonoTableInfo *t = &image->tables [MONO_TABLE_EXPORTEDTYPE];
7551 guint32 cols [MONO_EXP_TYPE_SIZE];
7554 for (i = 0; i < t->rows; ++i) {
7555 mono_metadata_decode_row (t, i, cols, MONO_EXP_TYPE_SIZE);
7557 guint32 impl = cols [MONO_EXP_TYPE_IMPLEMENTATION];
7558 if ((impl & MONO_IMPLEMENTATION_MASK) == MONO_IMPLEMENTATION_EXP_TYPE)
7562 name = mono_metadata_string_heap (image, cols [MONO_EXP_TYPE_NAME]);
7563 nspace = mono_metadata_string_heap (image, cols [MONO_EXP_TYPE_NAMESPACE]);
7565 nspace_index = cols [MONO_EXP_TYPE_NAMESPACE];
7566 nspace_table = (GHashTable *)g_hash_table_lookup (name_cache2, GUINT_TO_POINTER (nspace_index));
7567 if (!nspace_table) {
7568 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
7569 g_hash_table_insert (the_name_cache, (char*)nspace, nspace_table);
7570 g_hash_table_insert (name_cache2, GUINT_TO_POINTER (nspace_index),
7573 g_hash_table_insert (nspace_table, (char *) name, GUINT_TO_POINTER (mono_metadata_make_token (MONO_TABLE_EXPORTEDTYPE, i + 1)));
7577 g_hash_table_destroy (name_cache2);
7579 mono_image_lock (image);
7580 if (image->name_cache) {
7581 /* Somebody initialized it before us */
7582 g_hash_table_destroy (the_name_cache);
7584 mono_atomic_store_release (&image->name_cache, the_name_cache);
7586 mono_image_unlock (image);
7589 /*FIXME Only dynamic assemblies should allow this operation.*/
7591 mono_image_add_to_name_cache (MonoImage *image, const char *nspace,
7592 const char *name, guint32 index)
7594 GHashTable *nspace_table;
7595 GHashTable *name_cache;
7598 mono_image_init_name_cache (image);
7599 mono_image_lock (image);
7601 name_cache = image->name_cache;
7602 if (!(nspace_table = (GHashTable *)g_hash_table_lookup (name_cache, nspace))) {
7603 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
7604 g_hash_table_insert (name_cache, (char *)nspace, (char *)nspace_table);
7607 if ((old_index = GPOINTER_TO_UINT (g_hash_table_lookup (nspace_table, (char*) name))))
7608 g_error ("overrwritting old token %x on image %s for type %s::%s", old_index, image->name, nspace, name);
7610 g_hash_table_insert (nspace_table, (char *) name, GUINT_TO_POINTER (index));
7612 mono_image_unlock (image);
7621 find_nocase (gpointer key, gpointer value, gpointer user_data)
7623 char *name = (char*)key;
7624 FindUserData *data = (FindUserData*)user_data;
7626 if (!data->value && (mono_utf8_strcasecmp (name, (char*)data->key) == 0))
7627 data->value = value;
7631 * mono_class_from_name_case:
7632 * @image: The MonoImage where the type is looked up in
7633 * @name_space: the type namespace
7634 * @name: the type short name.
7635 * @deprecated: use the mono_class_from_name_case_checked variant instead.
7637 * Obtains a MonoClass with a given namespace and a given name which
7638 * is located in the given MonoImage. The namespace and name
7639 * lookups are case insensitive.
7642 mono_class_from_name_case (MonoImage *image, const char* name_space, const char *name)
7645 MonoClass *res = mono_class_from_name_case_checked (image, name_space, name, &error);
7646 mono_error_cleanup (&error);
7652 * mono_class_from_name_case:
7653 * @image: The MonoImage where the type is looked up in
7654 * @name_space: the type namespace
7655 * @name: the type short name.
7658 * Obtains a MonoClass with a given namespace and a given name which
7659 * is located in the given MonoImage. The namespace and name
7660 * lookups are case insensitive.
7662 * Returns: The MonoClass if the given namespace and name were found, or NULL if it
7663 * was not found. The @error object will contain information about the problem
7667 mono_class_from_name_case_checked (MonoImage *image, const char *name_space, const char *name, MonoError *error)
7669 MonoTableInfo *t = &image->tables [MONO_TABLE_TYPEDEF];
7670 guint32 cols [MONO_TYPEDEF_SIZE];
7675 mono_error_init (error);
7677 if (image_is_dynamic (image)) {
7679 FindUserData user_data;
7681 mono_image_init_name_cache (image);
7682 mono_image_lock (image);
7684 user_data.key = name_space;
7685 user_data.value = NULL;
7686 g_hash_table_foreach (image->name_cache, find_nocase, &user_data);
7688 if (user_data.value) {
7689 GHashTable *nspace_table = (GHashTable*)user_data.value;
7691 user_data.key = name;
7692 user_data.value = NULL;
7694 g_hash_table_foreach (nspace_table, find_nocase, &user_data);
7696 if (user_data.value)
7697 token = GPOINTER_TO_UINT (user_data.value);
7700 mono_image_unlock (image);
7703 return mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | token, error);
7709 /* add a cache if needed */
7710 for (i = 1; i <= t->rows; ++i) {
7711 mono_metadata_decode_row (t, i - 1, cols, MONO_TYPEDEF_SIZE);
7712 visib = cols [MONO_TYPEDEF_FLAGS] & TYPE_ATTRIBUTE_VISIBILITY_MASK;
7714 * Nested types are accessed from the nesting name. We use the fact that nested types use different visibility flags
7715 * than toplevel types, thus avoiding the need to grovel through the NESTED_TYPE table
7717 if (visib >= TYPE_ATTRIBUTE_NESTED_PUBLIC && visib <= TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM)
7719 n = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
7720 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
7721 if (mono_utf8_strcasecmp (n, name) == 0 && mono_utf8_strcasecmp (nspace, name_space) == 0)
7722 return mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | i, error);
7728 return_nested_in (MonoClass *klass, char *nested)
7731 char *s = strchr (nested, '/');
7732 gpointer iter = NULL;
7739 while ((found = mono_class_get_nested_types (klass, &iter))) {
7740 if (strcmp (found->name, nested) == 0) {
7742 return return_nested_in (found, s);
7750 search_modules (MonoImage *image, const char *name_space, const char *name, MonoError *error)
7752 MonoTableInfo *file_table = &image->tables [MONO_TABLE_FILE];
7753 MonoImage *file_image;
7757 mono_error_init (error);
7760 * The EXPORTEDTYPES table only contains public types, so have to search the
7762 * Note: image->modules contains the contents of the MODULEREF table, while
7763 * the real module list is in the FILE table.
7765 for (i = 0; i < file_table->rows; i++) {
7766 guint32 cols [MONO_FILE_SIZE];
7767 mono_metadata_decode_row (file_table, i, cols, MONO_FILE_SIZE);
7768 if (cols [MONO_FILE_FLAGS] == FILE_CONTAINS_NO_METADATA)
7771 file_image = mono_image_load_file_for_image_checked (image, i + 1, error);
7773 klass = mono_class_from_name_checked (file_image, name_space, name, error);
7774 if (klass || !is_ok (error))
7783 mono_class_from_name_checked_aux (MonoImage *image, const char* name_space, const char *name, GHashTable* visited_images, MonoError *error)
7785 GHashTable *nspace_table;
7786 MonoImage *loaded_image;
7793 mono_error_init (error);
7795 // Checking visited images avoids stack overflows when cyclic references exist.
7796 if (g_hash_table_lookup (visited_images, image))
7799 g_hash_table_insert (visited_images, image, GUINT_TO_POINTER(1));
7801 if ((nested = strchr (name, '/'))) {
7802 int pos = nested - name;
7803 int len = strlen (name);
7806 memcpy (buf, name, len + 1);
7808 nested = buf + pos + 1;
7812 /* FIXME: get_class_from_name () can't handle types in the EXPORTEDTYPE table */
7813 if (get_class_from_name && image->tables [MONO_TABLE_EXPORTEDTYPE].rows == 0) {
7814 gboolean res = get_class_from_name (image, name_space, name, &klass);
7817 klass = search_modules (image, name_space, name, error);
7822 return klass ? return_nested_in (klass, nested) : NULL;
7828 mono_image_init_name_cache (image);
7829 mono_image_lock (image);
7831 nspace_table = (GHashTable *)g_hash_table_lookup (image->name_cache, name_space);
7834 token = GPOINTER_TO_UINT (g_hash_table_lookup (nspace_table, name));
7836 mono_image_unlock (image);
7838 if (!token && image_is_dynamic (image) && image->modules) {
7839 /* Search modules as well */
7840 for (i = 0; i < image->module_count; ++i) {
7841 MonoImage *module = image->modules [i];
7843 klass = mono_class_from_name_checked (module, name_space, name, error);
7844 if (klass || !is_ok (error))
7850 klass = search_modules (image, name_space, name, error);
7851 if (klass || !is_ok (error))
7856 if (mono_metadata_token_table (token) == MONO_TABLE_EXPORTEDTYPE) {
7857 MonoTableInfo *t = &image->tables [MONO_TABLE_EXPORTEDTYPE];
7858 guint32 cols [MONO_EXP_TYPE_SIZE];
7861 idx = mono_metadata_token_index (token);
7863 mono_metadata_decode_row (t, idx - 1, cols, MONO_EXP_TYPE_SIZE);
7865 impl = cols [MONO_EXP_TYPE_IMPLEMENTATION];
7866 if ((impl & MONO_IMPLEMENTATION_MASK) == MONO_IMPLEMENTATION_FILE) {
7867 loaded_image = mono_assembly_load_module_checked (image->assembly, impl >> MONO_IMPLEMENTATION_BITS, error);
7870 klass = mono_class_from_name_checked_aux (loaded_image, name_space, name, visited_images, error);
7872 return klass ? return_nested_in (klass, nested) : NULL;
7874 } else if ((impl & MONO_IMPLEMENTATION_MASK) == MONO_IMPLEMENTATION_ASSEMBLYREF) {
7875 guint32 assembly_idx;
7877 assembly_idx = impl >> MONO_IMPLEMENTATION_BITS;
7879 mono_assembly_load_reference (image, assembly_idx - 1);
7880 g_assert (image->references [assembly_idx - 1]);
7881 if (image->references [assembly_idx - 1] == (gpointer)-1)
7883 klass = mono_class_from_name_checked_aux (image->references [assembly_idx - 1]->image, name_space, name, visited_images, error);
7885 return klass ? return_nested_in (klass, nested) : NULL;
7888 g_assert_not_reached ();
7892 token = MONO_TOKEN_TYPE_DEF | token;
7894 klass = mono_class_get_checked (image, token, error);
7896 return return_nested_in (klass, nested);
7901 * mono_class_from_name_checked:
7902 * @image: The MonoImage where the type is looked up in
7903 * @name_space: the type namespace
7904 * @name: the type short name.
7906 * Obtains a MonoClass with a given namespace and a given name which
7907 * is located in the given MonoImage.
7909 * Works like mono_class_from_name, but error handling is tricky. It can return NULL and have no error
7910 * set if the class was not found or it will return NULL and set the error if there was a loading error.
7913 mono_class_from_name_checked (MonoImage *image, const char* name_space, const char *name, MonoError *error)
7916 GHashTable *visited_images;
7918 visited_images = g_hash_table_new (g_direct_hash, g_direct_equal);
7920 klass = mono_class_from_name_checked_aux (image, name_space, name, visited_images, error);
7922 g_hash_table_destroy (visited_images);
7928 * mono_class_from_name:
7929 * @image: The MonoImage where the type is looked up in
7930 * @name_space: the type namespace
7931 * @name: the type short name.
7933 * Obtains a MonoClass with a given namespace and a given name which
7934 * is located in the given MonoImage.
7936 * To reference nested classes, use the "/" character as a separator.
7937 * For example use "Foo/Bar" to reference the class Bar that is nested
7938 * inside Foo, like this: "class Foo { class Bar {} }".
7941 mono_class_from_name (MonoImage *image, const char* name_space, const char *name)
7946 klass = mono_class_from_name_checked (image, name_space, name, &error);
7947 mono_error_cleanup (&error); /* FIXME Don't swallow the error */
7953 * mono_class_load_from_name:
7954 * @image: The MonoImage where the type is looked up in
7955 * @name_space: the type namespace
7956 * @name: the type short name.
7958 * This function works exactly like mono_class_from_name but it will abort if the class is not found.
7959 * This function should be used by the runtime for critical types to which there's no way to recover but crash
7960 * If they are missing. Thing of System.Object or System.String.
7963 mono_class_load_from_name (MonoImage *image, const char* name_space, const char *name)
7968 klass = mono_class_from_name_checked (image, name_space, name, &error);
7970 g_error ("Runtime critical type %s.%s not found", name_space, name);
7971 if (!mono_error_ok (&error))
7972 g_error ("Could not load runtime critical type %s.%s due to %s", name_space, name, mono_error_get_message (&error));
7977 * mono_class_try_load_from_name:
7978 * @image: The MonoImage where the type is looked up in
7979 * @name_space: the type namespace
7980 * @name: the type short name.
7982 * This function tries to load a type, returning the class was found or NULL otherwise.
7983 * This function should be used by the runtime when probing for optional types, those that could have being linked out.
7985 * Big design consideration. This function aborts if there was an error loading the type. This prevents us from missing
7986 * a type that we would otherwise assume to be available but was not due some error.
7990 mono_class_try_load_from_name (MonoImage *image, const char* name_space, const char *name)
7995 klass = mono_class_from_name_checked (image, name_space, name, &error);
7996 if (!mono_error_ok (&error))
7997 g_error ("Could not load runtime critical type %s.%s due to %s", name_space, name, mono_error_get_message (&error));
8003 * mono_class_is_subclass_of:
8004 * @klass: class to probe if it is a subclass of another one
8005 * @klassc: the class we suspect is the base class
8006 * @check_interfaces: whether we should perform interface checks
8008 * This method determines whether @klass is a subclass of @klassc.
8010 * If the @check_interfaces flag is set, then if @klassc is an interface
8011 * this method return TRUE if the @klass implements the interface or
8012 * if @klass is an interface, if one of its base classes is @klass.
8014 * If @check_interfaces is false then, then if @klass is not an interface
8015 * then it returns TRUE if the @klass is a subclass of @klassc.
8017 * if @klass is an interface and @klassc is System.Object, then this function
8022 mono_class_is_subclass_of (MonoClass *klass, MonoClass *klassc,
8023 gboolean check_interfaces)
8025 /* FIXME test for interfaces with variant generic arguments */
8026 mono_class_init (klass);
8027 mono_class_init (klassc);
8029 if (check_interfaces && MONO_CLASS_IS_INTERFACE (klassc) && !MONO_CLASS_IS_INTERFACE (klass)) {
8030 if (MONO_CLASS_IMPLEMENTS_INTERFACE (klass, klassc->interface_id))
8032 } else if (check_interfaces && MONO_CLASS_IS_INTERFACE (klassc) && MONO_CLASS_IS_INTERFACE (klass)) {
8035 for (i = 0; i < klass->interface_count; i ++) {
8036 MonoClass *ic = klass->interfaces [i];
8041 if (!MONO_CLASS_IS_INTERFACE (klass) && mono_class_has_parent (klass, klassc))
8046 * MS.NET thinks interfaces are a subclass of Object, so we think it as
8049 if (klassc == mono_defaults.object_class)
8056 mono_type_is_generic_argument (MonoType *type)
8058 return type->type == MONO_TYPE_VAR || type->type == MONO_TYPE_MVAR;
8062 mono_class_has_variant_generic_params (MonoClass *klass)
8065 MonoGenericContainer *container;
8067 if (!klass->generic_class)
8070 container = klass->generic_class->container_class->generic_container;
8072 for (i = 0; i < container->type_argc; ++i)
8073 if (mono_generic_container_get_param_info (container, i)->flags & (MONO_GEN_PARAM_VARIANT|MONO_GEN_PARAM_COVARIANT))
8080 mono_gparam_is_reference_conversible (MonoClass *target, MonoClass *candidate, gboolean check_for_reference_conv)
8082 if (target == candidate)
8085 if (check_for_reference_conv &&
8086 mono_type_is_generic_argument (&target->byval_arg) &&
8087 mono_type_is_generic_argument (&candidate->byval_arg)) {
8088 MonoGenericParam *gparam = candidate->byval_arg.data.generic_param;
8089 MonoGenericParamInfo *pinfo = mono_generic_param_info (gparam);
8091 if (!pinfo || (pinfo->flags & GENERIC_PARAMETER_ATTRIBUTE_REFERENCE_TYPE_CONSTRAINT) == 0)
8094 if (!mono_class_is_assignable_from (target, candidate))
8100 * @container the generic container from the GTD
8101 * @klass: the class to be assigned to
8102 * @oklass: the source class
8104 * Both @klass and @oklass must be instances of the same generic interface.
8106 * Returns: TRUE if @klass can be assigned to a @klass variable
8109 mono_class_is_variant_compatible (MonoClass *klass, MonoClass *oklass, gboolean check_for_reference_conv)
8112 MonoType **klass_argv, **oklass_argv;
8113 MonoClass *klass_gtd = mono_class_get_generic_type_definition (klass);
8114 MonoGenericContainer *container = klass_gtd->generic_container;
8116 if (klass == oklass)
8119 /*Viable candidates are instances of the same generic interface*/
8120 if (mono_class_get_generic_type_definition (oklass) != klass_gtd || oklass == klass_gtd)
8123 klass_argv = &klass->generic_class->context.class_inst->type_argv [0];
8124 oklass_argv = &oklass->generic_class->context.class_inst->type_argv [0];
8126 for (j = 0; j < container->type_argc; ++j) {
8127 MonoClass *param1_class = mono_class_from_mono_type (klass_argv [j]);
8128 MonoClass *param2_class = mono_class_from_mono_type (oklass_argv [j]);
8130 if (param1_class->valuetype != param2_class->valuetype || (param1_class->valuetype && param1_class != param2_class))
8134 * The _VARIANT and _COVARIANT constants should read _COVARIANT and
8135 * _CONTRAVARIANT, but they are in a public header so we can't fix it.
8137 if (param1_class != param2_class) {
8138 if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_VARIANT) {
8139 if (!mono_gparam_is_reference_conversible (param1_class, param2_class, check_for_reference_conv))
8141 } else if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_COVARIANT) {
8142 if (!mono_gparam_is_reference_conversible (param2_class, param1_class, check_for_reference_conv))
8152 mono_gparam_is_assignable_from (MonoClass *target, MonoClass *candidate)
8154 MonoGenericParam *gparam, *ogparam;
8155 MonoGenericParamInfo *tinfo, *cinfo;
8156 MonoClass **candidate_class;
8157 gboolean class_constraint_satisfied, valuetype_constraint_satisfied;
8160 if (target == candidate)
8162 if (target->byval_arg.type != candidate->byval_arg.type)
8165 gparam = target->byval_arg.data.generic_param;
8166 ogparam = candidate->byval_arg.data.generic_param;
8167 tinfo = mono_generic_param_info (gparam);
8168 cinfo = mono_generic_param_info (ogparam);
8170 class_constraint_satisfied = FALSE;
8171 valuetype_constraint_satisfied = FALSE;
8173 /*candidate must have a super set of target's special constraints*/
8174 tmask = tinfo->flags & GENERIC_PARAMETER_ATTRIBUTE_SPECIAL_CONSTRAINTS_MASK;
8175 cmask = cinfo->flags & GENERIC_PARAMETER_ATTRIBUTE_SPECIAL_CONSTRAINTS_MASK;
8177 if (cinfo->constraints) {
8178 for (candidate_class = cinfo->constraints; *candidate_class; ++candidate_class) {
8179 MonoClass *cc = *candidate_class;
8181 if (mono_type_is_reference (&cc->byval_arg) && !MONO_CLASS_IS_INTERFACE (cc))
8182 class_constraint_satisfied = TRUE;
8183 else if (!mono_type_is_reference (&cc->byval_arg) && !MONO_CLASS_IS_INTERFACE (cc))
8184 valuetype_constraint_satisfied = TRUE;
8187 class_constraint_satisfied |= (cmask & GENERIC_PARAMETER_ATTRIBUTE_REFERENCE_TYPE_CONSTRAINT) != 0;
8188 valuetype_constraint_satisfied |= (cmask & GENERIC_PARAMETER_ATTRIBUTE_VALUE_TYPE_CONSTRAINT) != 0;
8190 if ((tmask & GENERIC_PARAMETER_ATTRIBUTE_REFERENCE_TYPE_CONSTRAINT) && !class_constraint_satisfied)
8192 if ((tmask & GENERIC_PARAMETER_ATTRIBUTE_VALUE_TYPE_CONSTRAINT) && !valuetype_constraint_satisfied)
8194 if ((tmask & GENERIC_PARAMETER_ATTRIBUTE_CONSTRUCTOR_CONSTRAINT) && !((cmask & GENERIC_PARAMETER_ATTRIBUTE_CONSTRUCTOR_CONSTRAINT) ||
8195 valuetype_constraint_satisfied)) {
8200 /*candidate type constraints must be a superset of target's*/
8201 if (tinfo->constraints) {
8202 MonoClass **target_class;
8203 for (target_class = tinfo->constraints; *target_class; ++target_class) {
8204 MonoClass *tc = *target_class;
8207 * A constraint from @target might inflate into @candidate itself and in that case we don't need
8208 * check it's constraints since it satisfy the constraint by itself.
8210 if (mono_metadata_type_equal (&tc->byval_arg, &candidate->byval_arg))
8213 if (!cinfo->constraints)
8216 for (candidate_class = cinfo->constraints; *candidate_class; ++candidate_class) {
8217 MonoClass *cc = *candidate_class;
8219 if (mono_class_is_assignable_from (tc, cc))
8223 * This happens when we have the following:
8225 * Bar<K> where K : IFace
8226 * Foo<T, U> where T : U where U : IFace
8228 * Bar<T> <- T here satisfy K constraint transitively through to U's constraint
8231 if (mono_type_is_generic_argument (&cc->byval_arg)) {
8232 if (mono_gparam_is_assignable_from (target, cc))
8236 if (!*candidate_class)
8241 /*candidate itself must have a constraint that satisfy target*/
8242 if (cinfo->constraints) {
8243 for (candidate_class = cinfo->constraints; *candidate_class; ++candidate_class) {
8244 MonoClass *cc = *candidate_class;
8245 if (mono_class_is_assignable_from (target, cc))
8253 * mono_class_is_assignable_from:
8254 * @klass: the class to be assigned to
8255 * @oklass: the source class
8257 * Returns: TRUE if an instance of object oklass can be assigned to an
8258 * instance of object @klass
8261 mono_class_is_assignable_from (MonoClass *klass, MonoClass *oklass)
8264 /*FIXME this will cause a lot of irrelevant stuff to be loaded.*/
8266 mono_class_init (klass);
8268 if (!oklass->inited)
8269 mono_class_init (oklass);
8271 if (mono_class_has_failure (klass) || mono_class_has_failure (oklass))
8274 if (mono_type_is_generic_argument (&klass->byval_arg)) {
8275 if (!mono_type_is_generic_argument (&oklass->byval_arg))
8277 return mono_gparam_is_assignable_from (klass, oklass);
8280 if (MONO_CLASS_IS_INTERFACE (klass)) {
8281 if ((oklass->byval_arg.type == MONO_TYPE_VAR) || (oklass->byval_arg.type == MONO_TYPE_MVAR)) {
8282 MonoGenericParam *gparam = oklass->byval_arg.data.generic_param;
8283 MonoClass **constraints = mono_generic_container_get_param_info (gparam->owner, gparam->num)->constraints;
8287 for (i = 0; constraints [i]; ++i) {
8288 if (mono_class_is_assignable_from (klass, constraints [i]))
8296 /* interface_offsets might not be set for dynamic classes */
8297 if (oklass->ref_info_handle && !oklass->interface_bitmap) {
8299 * oklass might be a generic type parameter but they have
8300 * interface_offsets set.
8302 gboolean result = mono_reflection_call_is_assignable_to (oklass, klass, &error);
8303 if (!is_ok (&error)) {
8304 mono_error_cleanup (&error);
8309 if (!oklass->interface_bitmap)
8310 /* Happens with generic instances of not-yet created dynamic types */
8312 if (MONO_CLASS_IMPLEMENTS_INTERFACE (oklass, klass->interface_id))
8315 if (mono_class_has_variant_generic_params (klass)) {
8317 mono_class_setup_interfaces (oklass, &error);
8318 if (!mono_error_ok (&error)) {
8319 mono_error_cleanup (&error);
8323 /*klass is a generic variant interface, We need to extract from oklass a list of ifaces which are viable candidates.*/
8324 for (i = 0; i < oklass->interface_offsets_count; ++i) {
8325 MonoClass *iface = oklass->interfaces_packed [i];
8327 if (mono_class_is_variant_compatible (klass, iface, FALSE))
8332 } else if (klass->delegate) {
8333 if (mono_class_has_variant_generic_params (klass) && mono_class_is_variant_compatible (klass, oklass, FALSE))
8335 }else if (klass->rank) {
8336 MonoClass *eclass, *eoclass;
8338 if (oklass->rank != klass->rank)
8341 /* vectors vs. one dimensional arrays */
8342 if (oklass->byval_arg.type != klass->byval_arg.type)
8345 eclass = klass->cast_class;
8346 eoclass = oklass->cast_class;
8349 * a is b does not imply a[] is b[] when a is a valuetype, and
8350 * b is a reference type.
8353 if (eoclass->valuetype) {
8354 if ((eclass == mono_defaults.enum_class) ||
8355 (eclass == mono_defaults.enum_class->parent) ||
8356 (eclass == mono_defaults.object_class))
8360 return mono_class_is_assignable_from (klass->cast_class, oklass->cast_class);
8361 } else if (mono_class_is_nullable (klass)) {
8362 if (mono_class_is_nullable (oklass))
8363 return mono_class_is_assignable_from (klass->cast_class, oklass->cast_class);
8365 return mono_class_is_assignable_from (klass->cast_class, oklass);
8366 } else if (klass == mono_defaults.object_class)
8369 return mono_class_has_parent (oklass, klass);
8372 /*Check if @oklass is variant compatible with @klass.*/
8374 mono_class_is_variant_compatible_slow (MonoClass *klass, MonoClass *oklass)
8377 MonoType **klass_argv, **oklass_argv;
8378 MonoClass *klass_gtd = mono_class_get_generic_type_definition (klass);
8379 MonoGenericContainer *container = klass_gtd->generic_container;
8381 /*Viable candidates are instances of the same generic interface*/
8382 if (mono_class_get_generic_type_definition (oklass) != klass_gtd || oklass == klass_gtd)
8385 klass_argv = &klass->generic_class->context.class_inst->type_argv [0];
8386 oklass_argv = &oklass->generic_class->context.class_inst->type_argv [0];
8388 for (j = 0; j < container->type_argc; ++j) {
8389 MonoClass *param1_class = mono_class_from_mono_type (klass_argv [j]);
8390 MonoClass *param2_class = mono_class_from_mono_type (oklass_argv [j]);
8392 if (param1_class->valuetype != param2_class->valuetype)
8396 * The _VARIANT and _COVARIANT constants should read _COVARIANT and
8397 * _CONTRAVARIANT, but they are in a public header so we can't fix it.
8399 if (param1_class != param2_class) {
8400 if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_VARIANT) {
8401 if (!mono_class_is_assignable_from_slow (param1_class, param2_class))
8403 } else if (mono_generic_container_get_param_info (container, j)->flags & MONO_GEN_PARAM_COVARIANT) {
8404 if (!mono_class_is_assignable_from_slow (param2_class, param1_class))
8412 /*Check if @candidate implements the interface @target*/
8414 mono_class_implement_interface_slow (MonoClass *target, MonoClass *candidate)
8418 gboolean is_variant = mono_class_has_variant_generic_params (target);
8420 if (is_variant && MONO_CLASS_IS_INTERFACE (candidate)) {
8421 if (mono_class_is_variant_compatible_slow (target, candidate))
8426 if (candidate == target)
8429 /*A TypeBuilder can have more interfaces on tb->interfaces than on candidate->interfaces*/
8430 if (image_is_dynamic (candidate->image) && !candidate->wastypebuilder) {
8431 MonoReflectionTypeBuilder *tb = (MonoReflectionTypeBuilder *)mono_class_get_ref_info (candidate);
8433 if (tb && tb->interfaces) {
8434 for (j = mono_array_length (tb->interfaces) - 1; j >= 0; --j) {
8435 MonoReflectionType *iface = mono_array_get (tb->interfaces, MonoReflectionType*, j);
8436 MonoClass *iface_class;
8438 /* we can't realize the type here since it can do pretty much anything. */
8441 iface_class = mono_class_from_mono_type (iface->type);
8442 if (iface_class == target)
8444 if (is_variant && mono_class_is_variant_compatible_slow (target, iface_class))
8446 if (mono_class_implement_interface_slow (target, iface_class))
8451 /*setup_interfaces don't mono_class_init anything*/
8452 /*FIXME this doesn't handle primitive type arrays.
8453 ICollection<sbyte> x byte [] won't work because candidate->interfaces, for byte[], won't have IList<sbyte>.
8454 A possible way to fix this would be to move that to setup_interfaces from setup_interface_offsets.
8456 mono_class_setup_interfaces (candidate, &error);
8457 if (!mono_error_ok (&error)) {
8458 mono_error_cleanup (&error);
8462 for (i = 0; i < candidate->interface_count; ++i) {
8463 if (candidate->interfaces [i] == target)
8466 if (is_variant && mono_class_is_variant_compatible_slow (target, candidate->interfaces [i]))
8469 if (mono_class_implement_interface_slow (target, candidate->interfaces [i]))
8473 candidate = candidate->parent;
8474 } while (candidate);
8480 * Check if @oklass can be assigned to @klass.
8481 * This function does the same as mono_class_is_assignable_from but is safe to be used from mono_class_init context.
8484 mono_class_is_assignable_from_slow (MonoClass *target, MonoClass *candidate)
8486 if (candidate == target)
8488 if (target == mono_defaults.object_class)
8491 if (mono_class_has_parent (candidate, target))
8494 /*If target is not an interface there is no need to check them.*/
8495 if (MONO_CLASS_IS_INTERFACE (target))
8496 return mono_class_implement_interface_slow (target, candidate);
8498 if (target->delegate && mono_class_has_variant_generic_params (target))
8499 return mono_class_is_variant_compatible (target, candidate, FALSE);
8502 MonoClass *eclass, *eoclass;
8504 if (target->rank != candidate->rank)
8507 /* vectors vs. one dimensional arrays */
8508 if (target->byval_arg.type != candidate->byval_arg.type)
8511 eclass = target->cast_class;
8512 eoclass = candidate->cast_class;
8515 * a is b does not imply a[] is b[] when a is a valuetype, and
8516 * b is a reference type.
8519 if (eoclass->valuetype) {
8520 if ((eclass == mono_defaults.enum_class) ||
8521 (eclass == mono_defaults.enum_class->parent) ||
8522 (eclass == mono_defaults.object_class))
8526 return mono_class_is_assignable_from_slow (target->cast_class, candidate->cast_class);
8528 /*FIXME properly handle nullables */
8529 /*FIXME properly handle (M)VAR */
8534 * mono_class_get_cctor:
8535 * @klass: A MonoClass pointer
8537 * Returns: The static constructor of @klass if it exists, NULL otherwise.
8540 mono_class_get_cctor (MonoClass *klass)
8542 MonoCachedClassInfo cached_info;
8544 if (image_is_dynamic (klass->image)) {
8546 * has_cctor is not set for these classes because mono_class_init () is
8549 return mono_class_get_method_from_name_flags (klass, ".cctor", -1, METHOD_ATTRIBUTE_SPECIAL_NAME);
8552 if (!klass->has_cctor)
8555 if (mono_class_get_cached_class_info (klass, &cached_info)) {
8557 MonoMethod *result = mono_get_method_checked (klass->image, cached_info.cctor_token, klass, NULL, &error);
8558 if (!mono_error_ok (&error))
8559 g_error ("Could not lookup class cctor from cached metadata due to %s", mono_error_get_message (&error));
8563 if (klass->generic_class && !klass->methods)
8564 return mono_class_get_inflated_method (klass, mono_class_get_cctor (klass->generic_class->container_class));
8566 return mono_class_get_method_from_name_flags (klass, ".cctor", -1, METHOD_ATTRIBUTE_SPECIAL_NAME);
8570 * mono_class_get_finalizer:
8571 * @klass: The MonoClass pointer
8573 * Returns: The finalizer method of @klass if it exists, NULL otherwise.
8576 mono_class_get_finalizer (MonoClass *klass)
8578 MonoCachedClassInfo cached_info;
8581 mono_class_init (klass);
8582 if (!mono_class_has_finalizer (klass))
8585 if (mono_class_get_cached_class_info (klass, &cached_info)) {
8587 MonoMethod *result = mono_get_method_checked (cached_info.finalize_image, cached_info.finalize_token, NULL, NULL, &error);
8588 if (!mono_error_ok (&error))
8589 g_error ("Could not lookup finalizer from cached metadata due to %s", mono_error_get_message (&error));
8592 mono_class_setup_vtable (klass);
8593 return klass->vtable [finalize_slot];
8598 * mono_class_needs_cctor_run:
8599 * @klass: the MonoClass pointer
8600 * @caller: a MonoMethod describing the caller
8602 * Determines whenever the class has a static constructor and whenever it
8603 * needs to be called when executing CALLER.
8606 mono_class_needs_cctor_run (MonoClass *klass, MonoMethod *caller)
8610 method = mono_class_get_cctor (klass);
8612 return (method == caller) ? FALSE : TRUE;
8618 * mono_class_array_element_size:
8621 * Returns: The number of bytes an element of type @klass
8622 * uses when stored into an array.
8625 mono_class_array_element_size (MonoClass *klass)
8627 MonoType *type = &klass->byval_arg;
8630 switch (type->type) {
8633 case MONO_TYPE_BOOLEAN:
8637 case MONO_TYPE_CHAR:
8646 case MONO_TYPE_CLASS:
8647 case MONO_TYPE_STRING:
8648 case MONO_TYPE_OBJECT:
8649 case MONO_TYPE_SZARRAY:
8650 case MONO_TYPE_ARRAY:
8651 return sizeof (gpointer);
8656 case MONO_TYPE_VALUETYPE:
8657 if (type->data.klass->enumtype) {
8658 type = mono_class_enum_basetype (type->data.klass);
8659 klass = klass->element_class;
8662 return mono_class_instance_size (klass) - sizeof (MonoObject);
8663 case MONO_TYPE_GENERICINST:
8664 type = &type->data.generic_class->container_class->byval_arg;
8667 case MONO_TYPE_MVAR: {
8670 return mono_type_size (type, &align);
8672 case MONO_TYPE_VOID:
8676 g_error ("unknown type 0x%02x in mono_class_array_element_size", type->type);
8682 * mono_array_element_size:
8683 * @ac: pointer to a #MonoArrayClass
8685 * Returns: The size of single array element.
8688 mono_array_element_size (MonoClass *ac)
8690 g_assert (ac->rank);
8691 return ac->sizes.element_size;
8695 mono_ldtoken (MonoImage *image, guint32 token, MonoClass **handle_class,
8696 MonoGenericContext *context)
8699 gpointer res = mono_ldtoken_checked (image, token, handle_class, context, &error);
8700 g_assert (mono_error_ok (&error));
8705 mono_ldtoken_checked (MonoImage *image, guint32 token, MonoClass **handle_class,
8706 MonoGenericContext *context, MonoError *error)
8708 mono_error_init (error);
8710 if (image_is_dynamic (image)) {
8711 MonoClass *tmp_handle_class;
8712 gpointer obj = mono_lookup_dynamic_token_class (image, token, TRUE, &tmp_handle_class, context, error);
8714 mono_error_assert_ok (error);
8715 g_assert (tmp_handle_class);
8717 *handle_class = tmp_handle_class;
8719 if (tmp_handle_class == mono_defaults.typehandle_class)
8720 return &((MonoClass*)obj)->byval_arg;
8725 switch (token & 0xff000000) {
8726 case MONO_TOKEN_TYPE_DEF:
8727 case MONO_TOKEN_TYPE_REF:
8728 case MONO_TOKEN_TYPE_SPEC: {
8731 *handle_class = mono_defaults.typehandle_class;
8732 type = mono_type_get_checked (image, token, context, error);
8736 mono_class_init (mono_class_from_mono_type (type));
8737 /* We return a MonoType* as handle */
8740 case MONO_TOKEN_FIELD_DEF: {
8742 guint32 type = mono_metadata_typedef_from_field (image, mono_metadata_token_index (token));
8744 mono_error_set_bad_image (error, image, "Bad ldtoken %x", token);
8748 *handle_class = mono_defaults.fieldhandle_class;
8749 klass = mono_class_get_and_inflate_typespec_checked (image, MONO_TOKEN_TYPE_DEF | type, context, error);
8753 mono_class_init (klass);
8754 return mono_class_get_field (klass, token);
8756 case MONO_TOKEN_METHOD_DEF:
8757 case MONO_TOKEN_METHOD_SPEC: {
8759 meth = mono_get_method_checked (image, token, NULL, context, error);
8761 *handle_class = mono_defaults.methodhandle_class;
8767 case MONO_TOKEN_MEMBER_REF: {
8768 guint32 cols [MONO_MEMBERREF_SIZE];
8770 mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], mono_metadata_token_index (token) - 1, cols, MONO_MEMBERREF_SIZE);
8771 sig = mono_metadata_blob_heap (image, cols [MONO_MEMBERREF_SIGNATURE]);
8772 mono_metadata_decode_blob_size (sig, &sig);
8773 if (*sig == 0x6) { /* it's a field */
8775 MonoClassField *field;
8776 field = mono_field_from_token_checked (image, token, &klass, context, error);
8778 *handle_class = mono_defaults.fieldhandle_class;
8782 meth = mono_get_method_checked (image, token, NULL, context, error);
8784 *handle_class = mono_defaults.methodhandle_class;
8789 mono_error_set_bad_image (error, image, "Bad ldtoken %x", token);
8795 mono_lookup_dynamic_token (MonoImage *image, guint32 token, MonoGenericContext *context, MonoError *error)
8797 MonoClass *handle_class;
8798 mono_error_init (error);
8799 return mono_reflection_lookup_dynamic_token (image, token, TRUE, &handle_class, context, error);
8803 mono_lookup_dynamic_token_class (MonoImage *image, guint32 token, gboolean valid_token, MonoClass **handle_class, MonoGenericContext *context, MonoError *error)
8805 return mono_reflection_lookup_dynamic_token (image, token, valid_token, handle_class, context, error);
8808 static MonoGetCachedClassInfo get_cached_class_info = NULL;
8811 mono_install_get_cached_class_info (MonoGetCachedClassInfo func)
8813 get_cached_class_info = func;
8817 mono_class_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
8819 if (!get_cached_class_info)
8822 return get_cached_class_info (klass, res);
8826 mono_install_get_class_from_name (MonoGetClassFromName func)
8828 get_class_from_name = func;
8832 * mono_class_get_image:
8834 * Use this method to get the `MonoImage*` where this class came from.
8836 * Returns: The image where this class is defined.
8839 mono_class_get_image (MonoClass *klass)
8841 return klass->image;
8845 * mono_class_get_element_class:
8846 * @klass: the MonoClass to act on
8848 * Use this function to get the element class of an array.
8850 * Returns: The element class of an array.
8853 mono_class_get_element_class (MonoClass *klass)
8855 return klass->element_class;
8859 * mono_class_is_valuetype:
8860 * @klass: the MonoClass to act on
8862 * Use this method to determine if the provided `MonoClass*` represents a value type,
8863 * or a reference type.
8865 * Returns: TRUE if the MonoClass represents a ValueType, FALSE if it represents a reference type.
8868 mono_class_is_valuetype (MonoClass *klass)
8870 return klass->valuetype;
8874 * mono_class_is_enum:
8875 * @klass: the MonoClass to act on
8877 * Use this function to determine if the provided `MonoClass*` represents an enumeration.
8879 * Returns: TRUE if the MonoClass represents an enumeration.
8882 mono_class_is_enum (MonoClass *klass)
8884 return klass->enumtype;
8888 * mono_class_enum_basetype:
8889 * @klass: the MonoClass to act on
8891 * Use this function to get the underlying type for an enumeration value.
8893 * Returns: The underlying type representation for an enumeration.
8896 mono_class_enum_basetype (MonoClass *klass)
8898 if (klass->element_class == klass)
8899 /* SRE or broken types */
8902 return &klass->element_class->byval_arg;
8906 * mono_class_get_parent
8907 * @klass: the MonoClass to act on
8909 * Returns: The parent class for this class.
8912 mono_class_get_parent (MonoClass *klass)
8914 return klass->parent;
8918 * mono_class_get_nesting_type:
8919 * @klass: the MonoClass to act on
8921 * Use this function to obtain the class that the provided `MonoClass*` is nested on.
8923 * If the return is NULL, this indicates that this class is not nested.
8925 * Returns: The container type where this type is nested or NULL if this type is not a nested type.
8928 mono_class_get_nesting_type (MonoClass *klass)
8930 return klass->nested_in;
8934 * mono_class_get_rank:
8935 * @klass: the MonoClass to act on
8937 * Returns: The rank for the array (the number of dimensions).
8940 mono_class_get_rank (MonoClass *klass)
8946 * mono_class_get_flags:
8947 * @klass: the MonoClass to act on
8949 * The type flags from the TypeDef table from the metadata.
8950 * see the TYPE_ATTRIBUTE_* definitions on tabledefs.h for the
8953 * Returns: The flags from the TypeDef table.
8956 mono_class_get_flags (MonoClass *klass)
8958 return klass->flags;
8962 * mono_class_get_name
8963 * @klass: the MonoClass to act on
8965 * Returns: The name of the class.
8968 mono_class_get_name (MonoClass *klass)
8974 * mono_class_get_namespace:
8975 * @klass: the MonoClass to act on
8977 * Returns: The namespace of the class.
8980 mono_class_get_namespace (MonoClass *klass)
8982 return klass->name_space;
8986 * mono_class_get_type:
8987 * @klass: the MonoClass to act on
8989 * This method returns the internal Type representation for the class.
8991 * Returns: The MonoType from the class.
8994 mono_class_get_type (MonoClass *klass)
8996 return &klass->byval_arg;
9000 * mono_class_get_type_token:
9001 * @klass: the MonoClass to act on
9003 * This method returns type token for the class.
9005 * Returns: The type token for the class.
9008 mono_class_get_type_token (MonoClass *klass)
9010 return klass->type_token;
9014 * mono_class_get_byref_type:
9015 * @klass: the MonoClass to act on
9020 mono_class_get_byref_type (MonoClass *klass)
9022 return &klass->this_arg;
9026 * mono_class_num_fields:
9027 * @klass: the MonoClass to act on
9029 * Returns: The number of static and instance fields in the class.
9032 mono_class_num_fields (MonoClass *klass)
9034 return klass->field.count;
9038 * mono_class_num_methods:
9039 * @klass: the MonoClass to act on
9041 * Returns: The number of methods in the class.
9044 mono_class_num_methods (MonoClass *klass)
9046 return klass->method.count;
9050 * mono_class_num_properties
9051 * @klass: the MonoClass to act on
9053 * Returns: The number of properties in the class.
9056 mono_class_num_properties (MonoClass *klass)
9058 mono_class_setup_properties (klass);
9060 return klass->ext->property.count;
9064 * mono_class_num_events:
9065 * @klass: the MonoClass to act on
9067 * Returns: The number of events in the class.
9070 mono_class_num_events (MonoClass *klass)
9072 mono_class_setup_events (klass);
9074 return klass->ext->event.count;
9078 * mono_class_get_fields:
9079 * @klass: the MonoClass to act on
9081 * This routine is an iterator routine for retrieving the fields in a class.
9083 * You must pass a gpointer that points to zero and is treated as an opaque handle to
9084 * iterate over all of the elements. When no more values are
9085 * available, the return value is NULL.
9087 * Returns: a @MonoClassField* on each iteration, or NULL when no more fields are available.
9090 mono_class_get_fields (MonoClass* klass, gpointer *iter)
9092 MonoClassField* field;
9096 mono_class_setup_fields (klass);
9097 if (mono_class_has_failure (klass))
9099 /* start from the first */
9100 if (klass->field.count) {
9101 *iter = &klass->fields [0];
9102 return &klass->fields [0];
9108 field = (MonoClassField *)*iter;
9110 if (field < &klass->fields [klass->field.count]) {
9118 * mono_class_get_methods
9119 * @klass: the MonoClass to act on
9121 * This routine is an iterator routine for retrieving the fields in a class.
9123 * You must pass a gpointer that points to zero and is treated as an opaque handle to
9124 * iterate over all of the elements. When no more values are
9125 * available, the return value is NULL.
9127 * Returns: a MonoMethod on each iteration or NULL when no more methods are available.
9130 mono_class_get_methods (MonoClass* klass, gpointer *iter)
9132 MonoMethod** method;
9136 mono_class_setup_methods (klass);
9139 * We can't fail lookup of methods otherwise the runtime will burst in flames on all sort of places.
9140 * FIXME we should better report this error to the caller
9142 if (!klass->methods)
9144 /* start from the first */
9145 if (klass->method.count) {
9146 *iter = &klass->methods [0];
9147 return klass->methods [0];
9153 method = (MonoMethod **)*iter;
9155 if (method < &klass->methods [klass->method.count]) {
9163 * mono_class_get_virtual_methods:
9165 * Iterate over the virtual methods of KLASS.
9167 * LOCKING: Assumes the loader lock is held (because of the klass->methods check).
9170 mono_class_get_virtual_methods (MonoClass* klass, gpointer *iter)
9172 MonoMethod** method;
9175 if (klass->methods || !MONO_CLASS_HAS_STATIC_METADATA (klass)) {
9177 mono_class_setup_methods (klass);
9179 * We can't fail lookup of methods otherwise the runtime will burst in flames on all sort of places.
9180 * FIXME we should better report this error to the caller
9182 if (!klass->methods)
9184 /* start from the first */
9185 method = &klass->methods [0];
9187 method = (MonoMethod **)*iter;
9190 while (method < &klass->methods [klass->method.count]) {
9191 if (*method && ((*method)->flags & METHOD_ATTRIBUTE_VIRTUAL))
9195 if (method < &klass->methods [klass->method.count]) {
9202 /* Search directly in metadata to avoid calling setup_methods () */
9203 MonoMethod *res = NULL;
9209 start_index = GPOINTER_TO_UINT (*iter);
9212 for (i = start_index; i < klass->method.count; ++i) {
9215 /* klass->method.first points into the methodptr table */
9216 flags = mono_metadata_decode_table_row_col (klass->image, MONO_TABLE_METHOD, klass->method.first + i, MONO_METHOD_FLAGS);
9218 if (flags & METHOD_ATTRIBUTE_VIRTUAL)
9222 if (i < klass->method.count) {
9224 res = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | (klass->method.first + i + 1), klass, NULL, &error);
9225 mono_error_cleanup (&error); /* FIXME don't swallow the error */
9227 /* Add 1 here so the if (*iter) check fails */
9228 *iter = GUINT_TO_POINTER (i + 1);
9237 * mono_class_get_properties:
9238 * @klass: the MonoClass to act on
9240 * This routine is an iterator routine for retrieving the properties in a class.
9242 * You must pass a gpointer that points to zero and is treated as an opaque handle to
9243 * iterate over all of the elements. When no more values are
9244 * available, the return value is NULL.
9246 * Returns: a @MonoProperty* on each invocation, or NULL when no more are available.
9249 mono_class_get_properties (MonoClass* klass, gpointer *iter)
9251 MonoProperty* property;
9255 mono_class_setup_properties (klass);
9256 /* start from the first */
9257 if (klass->ext->property.count) {
9258 *iter = &klass->ext->properties [0];
9259 return (MonoProperty *)*iter;
9265 property = (MonoProperty *)*iter;
9267 if (property < &klass->ext->properties [klass->ext->property.count]) {
9269 return (MonoProperty *)*iter;
9275 * mono_class_get_events:
9276 * @klass: the MonoClass to act on
9278 * This routine is an iterator routine for retrieving the properties in a class.
9280 * You must pass a gpointer that points to zero and is treated as an opaque handle to
9281 * iterate over all of the elements. When no more values are
9282 * available, the return value is NULL.
9284 * Returns: a @MonoEvent* on each invocation, or NULL when no more are available.
9287 mono_class_get_events (MonoClass* klass, gpointer *iter)
9293 mono_class_setup_events (klass);
9294 /* start from the first */
9295 if (klass->ext->event.count) {
9296 *iter = &klass->ext->events [0];
9297 return (MonoEvent *)*iter;
9303 event = (MonoEvent *)*iter;
9305 if (event < &klass->ext->events [klass->ext->event.count]) {
9307 return (MonoEvent *)*iter;
9313 * mono_class_get_interfaces
9314 * @klass: the MonoClass to act on
9316 * This routine is an iterator routine for retrieving the interfaces implemented by this class.
9318 * You must pass a gpointer that points to zero and is treated as an opaque handle to
9319 * iterate over all of the elements. When no more values are
9320 * available, the return value is NULL.
9322 * Returns: a @Monoclass* on each invocation, or NULL when no more are available.
9325 mono_class_get_interfaces (MonoClass* klass, gpointer *iter)
9333 mono_class_init (klass);
9334 if (!klass->interfaces_inited) {
9335 mono_class_setup_interfaces (klass, &error);
9336 if (!mono_error_ok (&error)) {
9337 mono_error_cleanup (&error);
9341 /* start from the first */
9342 if (klass->interface_count) {
9343 *iter = &klass->interfaces [0];
9344 return klass->interfaces [0];
9350 iface = (MonoClass **)*iter;
9352 if (iface < &klass->interfaces [klass->interface_count]) {
9360 setup_nested_types (MonoClass *klass)
9363 GList *classes, *nested_classes, *l;
9366 if (klass->nested_classes_inited)
9369 if (!klass->type_token)
9370 klass->nested_classes_inited = TRUE;
9372 i = mono_metadata_nesting_typedef (klass->image, klass->type_token, 1);
9376 guint32 cols [MONO_NESTED_CLASS_SIZE];
9377 mono_metadata_decode_row (&klass->image->tables [MONO_TABLE_NESTEDCLASS], i - 1, cols, MONO_NESTED_CLASS_SIZE);
9378 nclass = mono_class_create_from_typedef (klass->image, MONO_TOKEN_TYPE_DEF | cols [MONO_NESTED_CLASS_NESTED], &error);
9379 if (!mono_error_ok (&error)) {
9380 /*FIXME don't swallow the error message*/
9381 mono_error_cleanup (&error);
9383 i = mono_metadata_nesting_typedef (klass->image, klass->type_token, i + 1);
9387 classes = g_list_prepend (classes, nclass);
9389 i = mono_metadata_nesting_typedef (klass->image, klass->type_token, i + 1);
9392 mono_class_alloc_ext (klass);
9394 nested_classes = NULL;
9395 for (l = classes; l; l = l->next)
9396 nested_classes = g_list_prepend_image (klass->image, nested_classes, l->data);
9397 g_list_free (classes);
9399 mono_image_lock (klass->image);
9401 mono_memory_barrier ();
9402 if (!klass->nested_classes_inited) {
9403 klass->ext->nested_classes = nested_classes;
9404 mono_memory_barrier ();
9405 klass->nested_classes_inited = TRUE;
9408 mono_image_unlock (klass->image);
9412 * mono_class_get_nested_types
9413 * @klass: the MonoClass to act on
9415 * This routine is an iterator routine for retrieving the nested types of a class.
9416 * This works only if @klass is non-generic, or a generic type definition.
9418 * You must pass a gpointer that points to zero and is treated as an opaque handle to
9419 * iterate over all of the elements. When no more values are
9420 * available, the return value is NULL.
9422 * Returns: a @Monoclass* on each invocation, or NULL when no more are available.
9425 mono_class_get_nested_types (MonoClass* klass, gpointer *iter)
9431 if (!klass->nested_classes_inited)
9432 setup_nested_types (klass);
9435 /* start from the first */
9436 if (klass->ext && klass->ext->nested_classes) {
9437 *iter = klass->ext->nested_classes;
9438 return (MonoClass *)klass->ext->nested_classes->data;
9440 /* no nested types */
9444 item = (GList *)*iter;
9448 return (MonoClass *)item->data;
9455 * mono_class_is_delegate
9456 * @klass: the MonoClass to act on
9458 * Returns: TRUE if the MonoClass represents a System.Delegate.
9461 mono_class_is_delegate (MonoClass *klass)
9463 return klass->delegate;
9467 * mono_class_implements_interface
9468 * @klass: The MonoClass to act on
9469 * @interface: The interface to check if @klass implements.
9471 * Returns: TRUE if @klass implements @interface.
9474 mono_class_implements_interface (MonoClass* klass, MonoClass* iface)
9476 return mono_class_is_assignable_from (iface, klass);
9480 * mono_field_get_name:
9481 * @field: the MonoClassField to act on
9483 * Returns: The name of the field.
9486 mono_field_get_name (MonoClassField *field)
9492 * mono_field_get_type:
9493 * @field: the MonoClassField to act on
9495 * Returns: MonoType of the field.
9498 mono_field_get_type (MonoClassField *field)
9501 MonoType *type = mono_field_get_type_checked (field, &error);
9502 if (!mono_error_ok (&error)) {
9503 mono_trace_warning (MONO_TRACE_TYPE, "Could not load field's type due to %s", mono_error_get_message (&error));
9504 mono_error_cleanup (&error);
9511 * mono_field_get_type_checked:
9512 * @field: the MonoClassField to act on
9513 * @error: used to return any erro found while retrieving @field type
9515 * Returns: MonoType of the field.
9518 mono_field_get_type_checked (MonoClassField *field, MonoError *error)
9520 mono_error_init (error);
9522 mono_field_resolve_type (field, error);
9527 * mono_field_get_parent:
9528 * @field: the MonoClassField to act on
9530 * Returns: MonoClass where the field was defined.
9533 mono_field_get_parent (MonoClassField *field)
9535 return field->parent;
9539 * mono_field_get_flags;
9540 * @field: the MonoClassField to act on
9542 * The metadata flags for a field are encoded using the
9543 * FIELD_ATTRIBUTE_* constants. See the tabledefs.h file for details.
9545 * Returns: The flags for the field.
9548 mono_field_get_flags (MonoClassField *field)
9551 return mono_field_resolve_flags (field);
9552 return field->type->attrs;
9556 * mono_field_get_offset:
9557 * @field: the MonoClassField to act on
9559 * Returns: The field offset.
9562 mono_field_get_offset (MonoClassField *field)
9564 return field->offset;
9568 mono_field_get_rva (MonoClassField *field)
9572 MonoClass *klass = field->parent;
9573 MonoFieldDefaultValue *field_def_values;
9575 g_assert (field->type->attrs & FIELD_ATTRIBUTE_HAS_FIELD_RVA);
9577 if (!klass->ext || !klass->ext->field_def_values) {
9578 mono_class_alloc_ext (klass);
9580 field_def_values = (MonoFieldDefaultValue *)mono_class_alloc0 (klass, sizeof (MonoFieldDefaultValue) * klass->field.count);
9582 mono_image_lock (klass->image);
9583 if (!klass->ext->field_def_values)
9584 klass->ext->field_def_values = field_def_values;
9585 mono_image_unlock (klass->image);
9588 field_index = mono_field_get_index (field);
9590 if (!klass->ext->field_def_values [field_index].data && !image_is_dynamic (klass->image)) {
9591 mono_metadata_field_info (field->parent->image, klass->field.first + field_index, NULL, &rva, NULL);
9593 g_warning ("field %s in %s should have RVA data, but hasn't", mono_field_get_name (field), field->parent->name);
9594 klass->ext->field_def_values [field_index].data = mono_image_rva_map (field->parent->image, rva);
9597 return klass->ext->field_def_values [field_index].data;
9601 * mono_field_get_data:
9602 * @field: the MonoClassField to act on
9604 * Returns: A pointer to the metadata constant value or to the field
9605 * data if it has an RVA flag.
9608 mono_field_get_data (MonoClassField *field)
9610 if (field->type->attrs & FIELD_ATTRIBUTE_HAS_DEFAULT) {
9611 MonoTypeEnum def_type;
9613 return mono_class_get_field_default_value (field, &def_type);
9614 } else if (field->type->attrs & FIELD_ATTRIBUTE_HAS_FIELD_RVA) {
9615 return mono_field_get_rva (field);
9622 * mono_property_get_name:
9623 * @prop: the MonoProperty to act on
9625 * Returns: The name of the property
9628 mono_property_get_name (MonoProperty *prop)
9634 * mono_property_get_set_method
9635 * @prop: the MonoProperty to act on.
9637 * Returns: The setter method of the property (A MonoMethod)
9640 mono_property_get_set_method (MonoProperty *prop)
9646 * mono_property_get_get_method
9647 * @prop: the MonoProperty to act on.
9649 * Returns: The setter method of the property (A MonoMethod)
9652 mono_property_get_get_method (MonoProperty *prop)
9658 * mono_property_get_parent:
9659 * @prop: the MonoProperty to act on.
9661 * Returns: The MonoClass where the property was defined.
9664 mono_property_get_parent (MonoProperty *prop)
9666 return prop->parent;
9670 * mono_property_get_flags:
9671 * @prop: the MonoProperty to act on.
9673 * The metadata flags for a property are encoded using the
9674 * PROPERTY_ATTRIBUTE_* constants. See the tabledefs.h file for details.
9676 * Returns: The flags for the property.
9679 mono_property_get_flags (MonoProperty *prop)
9685 * mono_event_get_name:
9686 * @event: the MonoEvent to act on
9688 * Returns: The name of the event.
9691 mono_event_get_name (MonoEvent *event)
9697 * mono_event_get_add_method:
9698 * @event: The MonoEvent to act on.
9700 * Returns: The @add' method for the event (a MonoMethod).
9703 mono_event_get_add_method (MonoEvent *event)
9709 * mono_event_get_remove_method:
9710 * @event: The MonoEvent to act on.
9712 * Returns: The @remove method for the event (a MonoMethod).
9715 mono_event_get_remove_method (MonoEvent *event)
9717 return event->remove;
9721 * mono_event_get_raise_method:
9722 * @event: The MonoEvent to act on.
9724 * Returns: The @raise method for the event (a MonoMethod).
9727 mono_event_get_raise_method (MonoEvent *event)
9729 return event->raise;
9733 * mono_event_get_parent:
9734 * @event: the MonoEvent to act on.
9736 * Returns: The MonoClass where the event is defined.
9739 mono_event_get_parent (MonoEvent *event)
9741 return event->parent;
9745 * mono_event_get_flags
9746 * @event: the MonoEvent to act on.
9748 * The metadata flags for an event are encoded using the
9749 * EVENT_* constants. See the tabledefs.h file for details.
9751 * Returns: The flags for the event.
9754 mono_event_get_flags (MonoEvent *event)
9756 return event->attrs;
9760 * mono_class_get_method_from_name:
9761 * @klass: where to look for the method
9762 * @name: name of the method
9763 * @param_count: number of parameters. -1 for any number.
9765 * Obtains a MonoMethod with a given name and number of parameters.
9766 * It only works if there are no multiple signatures for any given method name.
9769 mono_class_get_method_from_name (MonoClass *klass, const char *name, int param_count)
9771 return mono_class_get_method_from_name_flags (klass, name, param_count, 0);
9775 find_method_in_metadata (MonoClass *klass, const char *name, int param_count, int flags)
9777 MonoMethod *res = NULL;
9780 /* Search directly in the metadata to avoid calling setup_methods () */
9781 for (i = 0; i < klass->method.count; ++i) {
9783 guint32 cols [MONO_METHOD_SIZE];
9785 MonoMethodSignature *sig;
9787 /* klass->method.first points into the methodptr table */
9788 mono_metadata_decode_table_row (klass->image, MONO_TABLE_METHOD, klass->method.first + i, cols, MONO_METHOD_SIZE);
9790 if (!strcmp (mono_metadata_string_heap (klass->image, cols [MONO_METHOD_NAME]), name)) {
9791 method = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | (klass->method.first + i + 1), klass, NULL, &error);
9793 mono_error_cleanup (&error); /* FIXME don't swallow the error */
9796 if (param_count == -1) {
9800 sig = mono_method_signature_checked (method, &error);
9802 mono_error_cleanup (&error); /* FIXME don't swallow the error */
9805 if (sig->param_count == param_count) {
9816 * mono_class_get_method_from_name_flags:
9817 * @klass: where to look for the method
9818 * @name_space: name of the method
9819 * @param_count: number of parameters. -1 for any number.
9820 * @flags: flags which must be set in the method
9822 * Obtains a MonoMethod with a given name and number of parameters.
9823 * It only works if there are no multiple signatures for any given method name.
9826 mono_class_get_method_from_name_flags (MonoClass *klass, const char *name, int param_count, int flags)
9828 MonoMethod *res = NULL;
9831 mono_class_init (klass);
9833 if (klass->generic_class && !klass->methods) {
9834 res = mono_class_get_method_from_name_flags (klass->generic_class->container_class, name, param_count, flags);
9837 res = mono_class_inflate_generic_method_full_checked (res, klass, mono_class_get_context (klass), &error);
9838 if (!mono_error_ok (&error))
9839 mono_error_cleanup (&error); /*FIXME don't swallow the error */
9844 if (klass->methods || !MONO_CLASS_HAS_STATIC_METADATA (klass)) {
9845 mono_class_setup_methods (klass);
9847 We can't fail lookup of methods otherwise the runtime will burst in flames on all sort of places.
9848 See mono/tests/array_load_exception.il
9849 FIXME we should better report this error to the caller
9851 if (!klass->methods)
9853 for (i = 0; i < klass->method.count; ++i) {
9854 MonoMethod *method = klass->methods [i];
9856 if (method->name[0] == name [0] &&
9857 !strcmp (name, method->name) &&
9858 (param_count == -1 || mono_method_signature (method)->param_count == param_count) &&
9859 ((method->flags & flags) == flags)) {
9866 res = find_method_in_metadata (klass, name, param_count, flags);
9873 * mono_class_set_failure:
9874 * @klass: class in which the failure was detected
9875 * @ex_type: the kind of exception/error to be thrown (later)
9876 * @ex_data: exception data (specific to each type of exception/error)
9878 * Keep a detected failure informations in the class for later processing.
9879 * Note that only the first failure is kept.
9881 * LOCKING: Acquires the loader lock.
9884 mono_class_set_failure (MonoClass *klass, MonoErrorBoxed *boxed_error)
9886 g_assert (boxed_error != NULL);
9888 if (mono_class_has_failure (klass))
9891 mono_loader_lock ();
9892 klass->has_failure = 1;
9893 mono_image_property_insert (klass->image, klass, MONO_CLASS_PROP_EXCEPTION_DATA, boxed_error);
9894 mono_loader_unlock ();
9900 mono_class_has_failure (const MonoClass *klass)
9902 g_assert (klass != NULL);
9903 return klass->has_failure != 0;
9908 * mono_class_set_type_load_failure:
9909 * @klass: class in which the failure was detected
9910 * @fmt: Printf-style error message string.
9912 * Collect detected failure informaion in the class for later processing.
9913 * The error is stored as a MonoErrorBoxed as with mono_error_set_type_load_class ()
9914 * Note that only the first failure is kept.
9916 * Returns FALSE if a failure was already set on the class, or TRUE otherwise.
9918 * LOCKING: Acquires the loader lock.
9921 mono_class_set_type_load_failure (MonoClass *klass, const char * fmt, ...)
9923 MonoError prepare_error;
9926 if (mono_class_has_failure (klass))
9929 mono_error_init (&prepare_error);
9931 va_start (args, fmt);
9932 mono_error_vset_type_load_class (&prepare_error, klass, fmt, args);
9935 MonoErrorBoxed *box = mono_error_box (&prepare_error, klass->image);
9936 mono_error_cleanup (&prepare_error);
9937 return mono_class_set_failure (klass, box);
9941 * mono_class_get_exception_data:
9943 * Return the exception_data property of KLASS.
9945 * LOCKING: Acquires the loader lock.
9948 mono_class_get_exception_data (const MonoClass *klass)
9950 return mono_image_property_lookup (klass->image, (MonoClass*)klass, MONO_CLASS_PROP_EXCEPTION_DATA);
9954 * mono_classes_init:
9956 * Initialize the resources used by this module.
9959 mono_classes_init (void)
9961 mono_os_mutex_init (&classes_mutex);
9963 mono_native_tls_alloc (&setup_fields_tls_id, NULL);
9965 mono_counters_register ("Inflated methods size",
9966 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_methods_size);
9967 mono_counters_register ("Inflated classes",
9968 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_classes);
9969 mono_counters_register ("Inflated classes size",
9970 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_classes_size);
9971 mono_counters_register ("MonoClass size",
9972 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &classes_size);
9973 mono_counters_register ("MonoClassExt size",
9974 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &class_ext_size);
9978 * mono_classes_cleanup:
9980 * Free the resources used by this module.
9983 mono_classes_cleanup (void)
9985 mono_native_tls_free (setup_fields_tls_id);
9987 if (global_interface_bitset)
9988 mono_bitset_free (global_interface_bitset);
9989 global_interface_bitset = NULL;
9990 mono_os_mutex_destroy (&classes_mutex);
9994 * mono_class_get_exception_for_failure:
9995 * @klass: class in which the failure was detected
9997 * Return a constructed MonoException than the caller can then throw
9998 * using mono_raise_exception - or NULL if no failure is present (or
9999 * doesn't result in an exception).
10002 mono_class_get_exception_for_failure (MonoClass *klass)
10004 if (!mono_class_has_failure (klass))
10006 MonoError unboxed_error;
10007 mono_error_init (&unboxed_error);
10008 mono_error_set_for_class_failure (&unboxed_error, klass);
10009 return mono_error_convert_to_exception (&unboxed_error);
10013 is_nesting_type (MonoClass *outer_klass, MonoClass *inner_klass)
10015 outer_klass = mono_class_get_generic_type_definition (outer_klass);
10016 inner_klass = mono_class_get_generic_type_definition (inner_klass);
10018 if (outer_klass == inner_klass)
10020 inner_klass = inner_klass->nested_in;
10021 } while (inner_klass);
10026 mono_class_get_generic_type_definition (MonoClass *klass)
10028 return klass->generic_class ? klass->generic_class->container_class : klass;
10032 * Check if @klass is a subtype of @parent ignoring generic instantiations.
10034 * Generic instantiations are ignored for all super types of @klass.
10036 * Visibility checks ignoring generic instantiations.
10039 mono_class_has_parent_and_ignore_generics (MonoClass *klass, MonoClass *parent)
10042 klass = mono_class_get_generic_type_definition (klass);
10043 parent = mono_class_get_generic_type_definition (parent);
10044 mono_class_setup_supertypes (klass);
10046 for (i = 0; i < klass->idepth; ++i) {
10047 if (parent == mono_class_get_generic_type_definition (klass->supertypes [i]))
10053 * Subtype can only access parent members with family protection if the site object
10054 * is subclass of Subtype. For example:
10055 * class A { protected int x; }
10057 * void valid_access () {
10061 * void invalid_access () {
10068 is_valid_family_access (MonoClass *access_klass, MonoClass *member_klass, MonoClass *context_klass)
10070 if (!mono_class_has_parent_and_ignore_generics (access_klass, member_klass))
10073 if (context_klass == NULL)
10075 /*if access_klass is not member_klass context_klass must be type compat*/
10076 if (access_klass != member_klass && !mono_class_has_parent_and_ignore_generics (context_klass, access_klass))
10082 can_access_internals (MonoAssembly *accessing, MonoAssembly* accessed)
10085 if (accessing == accessed)
10087 if (!accessed || !accessing)
10090 /* extra safety under CoreCLR - the runtime does not verify the strongname signatures
10091 * anywhere so untrusted friends are not safe to access platform's code internals */
10092 if (mono_security_core_clr_enabled ()) {
10093 if (!mono_security_core_clr_can_access_internals (accessing->image, accessed->image))
10097 mono_assembly_load_friends (accessed);
10098 for (tmp = accessed->friend_assembly_names; tmp; tmp = tmp->next) {
10099 MonoAssemblyName *friend_ = (MonoAssemblyName *)tmp->data;
10100 /* Be conservative with checks */
10101 if (!friend_->name)
10103 if (strcmp (accessing->aname.name, friend_->name))
10105 if (friend_->public_key_token [0]) {
10106 if (!accessing->aname.public_key_token [0])
10108 if (!mono_public_tokens_are_equal (friend_->public_key_token, accessing->aname.public_key_token))
10117 * If klass is a generic type or if it is derived from a generic type, return the
10118 * MonoClass of the generic definition
10119 * Returns NULL if not found
10122 get_generic_definition_class (MonoClass *klass)
10125 if (klass->generic_class && klass->generic_class->container_class)
10126 return klass->generic_class->container_class;
10127 klass = klass->parent;
10133 can_access_instantiation (MonoClass *access_klass, MonoGenericInst *ginst)
10136 for (i = 0; i < ginst->type_argc; ++i) {
10137 MonoType *type = ginst->type_argv[i];
10138 switch (type->type) {
10139 case MONO_TYPE_SZARRAY:
10140 if (!can_access_type (access_klass, type->data.klass))
10143 case MONO_TYPE_ARRAY:
10144 if (!can_access_type (access_klass, type->data.array->eklass))
10147 case MONO_TYPE_PTR:
10148 if (!can_access_type (access_klass, mono_class_from_mono_type (type->data.type)))
10151 case MONO_TYPE_CLASS:
10152 case MONO_TYPE_VALUETYPE:
10153 case MONO_TYPE_GENERICINST:
10154 if (!can_access_type (access_klass, mono_class_from_mono_type (type)))
10164 can_access_type (MonoClass *access_klass, MonoClass *member_klass)
10168 if (access_klass == member_klass)
10171 if (access_klass->image->assembly && access_klass->image->assembly->corlib_internal)
10174 if (access_klass->element_class && !access_klass->enumtype)
10175 access_klass = access_klass->element_class;
10177 if (member_klass->element_class && !member_klass->enumtype)
10178 member_klass = member_klass->element_class;
10180 access_level = member_klass->flags & TYPE_ATTRIBUTE_VISIBILITY_MASK;
10182 if (member_klass->byval_arg.type == MONO_TYPE_VAR || member_klass->byval_arg.type == MONO_TYPE_MVAR)
10185 if (member_klass->generic_class && !can_access_instantiation (access_klass, member_klass->generic_class->context.class_inst))
10188 if (is_nesting_type (access_klass, member_klass) || (access_klass->nested_in && is_nesting_type (access_klass->nested_in, member_klass)))
10191 if (member_klass->nested_in && !can_access_type (access_klass, member_klass->nested_in))
10194 /*Non nested type with nested visibility. We just fail it.*/
10195 if (access_level >= TYPE_ATTRIBUTE_NESTED_PRIVATE && access_level <= TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM && member_klass->nested_in == NULL)
10198 switch (access_level) {
10199 case TYPE_ATTRIBUTE_NOT_PUBLIC:
10200 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
10202 case TYPE_ATTRIBUTE_PUBLIC:
10205 case TYPE_ATTRIBUTE_NESTED_PUBLIC:
10208 case TYPE_ATTRIBUTE_NESTED_PRIVATE:
10209 return is_nesting_type (member_klass, access_klass);
10211 case TYPE_ATTRIBUTE_NESTED_FAMILY:
10212 return mono_class_has_parent_and_ignore_generics (access_klass, member_klass->nested_in);
10214 case TYPE_ATTRIBUTE_NESTED_ASSEMBLY:
10215 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
10217 case TYPE_ATTRIBUTE_NESTED_FAM_AND_ASSEM:
10218 return can_access_internals (access_klass->image->assembly, member_klass->nested_in->image->assembly) &&
10219 mono_class_has_parent_and_ignore_generics (access_klass, member_klass->nested_in);
10221 case TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM:
10222 return can_access_internals (access_klass->image->assembly, member_klass->nested_in->image->assembly) ||
10223 mono_class_has_parent_and_ignore_generics (access_klass, member_klass->nested_in);
10228 /* FIXME: check visibility of type, too */
10230 can_access_member (MonoClass *access_klass, MonoClass *member_klass, MonoClass* context_klass, int access_level)
10232 MonoClass *member_generic_def;
10233 if (access_klass->image->assembly && access_klass->image->assembly->corlib_internal)
10236 if (((access_klass->generic_class && access_klass->generic_class->container_class) ||
10237 access_klass->generic_container) &&
10238 (member_generic_def = get_generic_definition_class (member_klass))) {
10239 MonoClass *access_container;
10241 if (access_klass->generic_container)
10242 access_container = access_klass;
10244 access_container = access_klass->generic_class->container_class;
10246 if (can_access_member (access_container, member_generic_def, context_klass, access_level))
10250 /* Partition I 8.5.3.2 */
10251 /* the access level values are the same for fields and methods */
10252 switch (access_level) {
10253 case FIELD_ATTRIBUTE_COMPILER_CONTROLLED:
10254 /* same compilation unit */
10255 return access_klass->image == member_klass->image;
10256 case FIELD_ATTRIBUTE_PRIVATE:
10257 return access_klass == member_klass;
10258 case FIELD_ATTRIBUTE_FAM_AND_ASSEM:
10259 if (is_valid_family_access (access_klass, member_klass, context_klass) &&
10260 can_access_internals (access_klass->image->assembly, member_klass->image->assembly))
10263 case FIELD_ATTRIBUTE_ASSEMBLY:
10264 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
10265 case FIELD_ATTRIBUTE_FAMILY:
10266 if (is_valid_family_access (access_klass, member_klass, context_klass))
10269 case FIELD_ATTRIBUTE_FAM_OR_ASSEM:
10270 if (is_valid_family_access (access_klass, member_klass, context_klass))
10272 return can_access_internals (access_klass->image->assembly, member_klass->image->assembly);
10273 case FIELD_ATTRIBUTE_PUBLIC:
10280 * mono_method_can_access_field:
10281 * @method: Method that will attempt to access the field
10282 * @field: the field to access
10284 * Used to determine if a method is allowed to access the specified field.
10286 * Returns: TRUE if the given @method is allowed to access the @field while following
10287 * the accessibility rules of the CLI.
10290 mono_method_can_access_field (MonoMethod *method, MonoClassField *field)
10292 /* FIXME: check all overlapping fields */
10293 int can = can_access_member (method->klass, field->parent, NULL, mono_field_get_type (field)->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
10295 MonoClass *nested = method->klass->nested_in;
10297 can = can_access_member (nested, field->parent, NULL, mono_field_get_type (field)->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
10300 nested = nested->nested_in;
10307 * mono_method_can_access_method:
10308 * @method: Method that will attempt to access the other method
10309 * @called: the method that we want to probe for accessibility.
10311 * Used to determine if the @method is allowed to access the specified @called method.
10313 * Returns: TRUE if the given @method is allowed to invoke the @called while following
10314 * the accessibility rules of the CLI.
10317 mono_method_can_access_method (MonoMethod *method, MonoMethod *called)
10319 method = mono_method_get_method_definition (method);
10320 called = mono_method_get_method_definition (called);
10321 return mono_method_can_access_method_full (method, called, NULL);
10325 * mono_method_can_access_method_full:
10326 * @method: The caller method
10327 * @called: The called method
10328 * @context_klass: The static type on stack of the owner @called object used
10330 * This function must be used with instance calls, as they have more strict family accessibility.
10331 * It can be used with static methods, but context_klass should be NULL.
10333 * Returns: TRUE if caller have proper visibility and acessibility to @called
10336 mono_method_can_access_method_full (MonoMethod *method, MonoMethod *called, MonoClass *context_klass)
10338 /* Wrappers are except from access checks */
10339 if (method->wrapper_type != MONO_WRAPPER_NONE || called->wrapper_type != MONO_WRAPPER_NONE)
10342 MonoClass *access_class = method->klass;
10343 MonoClass *member_class = called->klass;
10344 int can = can_access_member (access_class, member_class, context_klass, called->flags & METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK);
10346 MonoClass *nested = access_class->nested_in;
10348 can = can_access_member (nested, member_class, context_klass, called->flags & METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK);
10351 nested = nested->nested_in;
10358 can = can_access_type (access_class, member_class);
10360 MonoClass *nested = access_class->nested_in;
10362 can = can_access_type (nested, member_class);
10365 nested = nested->nested_in;
10372 if (called->is_inflated) {
10373 MonoMethodInflated * infl = (MonoMethodInflated*)called;
10374 if (infl->context.method_inst && !can_access_instantiation (access_class, infl->context.method_inst))
10383 * mono_method_can_access_field_full:
10384 * @method: The caller method
10385 * @field: The accessed field
10386 * @context_klass: The static type on stack of the owner @field object used
10388 * This function must be used with instance fields, as they have more strict family accessibility.
10389 * It can be used with static fields, but context_klass should be NULL.
10391 * Returns: TRUE if caller have proper visibility and acessibility to @field
10394 mono_method_can_access_field_full (MonoMethod *method, MonoClassField *field, MonoClass *context_klass)
10396 MonoClass *access_class = method->klass;
10397 MonoClass *member_class = field->parent;
10398 /* FIXME: check all overlapping fields */
10399 int can = can_access_member (access_class, member_class, context_klass, field->type->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
10401 MonoClass *nested = access_class->nested_in;
10403 can = can_access_member (nested, member_class, context_klass, field->type->attrs & FIELD_ATTRIBUTE_FIELD_ACCESS_MASK);
10406 nested = nested->nested_in;
10413 can = can_access_type (access_class, member_class);
10415 MonoClass *nested = access_class->nested_in;
10417 can = can_access_type (nested, member_class);
10420 nested = nested->nested_in;
10430 * mono_class_can_access_class:
10431 * @source_class: The source class
10432 * @target_class: The accessed class
10434 * This function returns is @target_class is visible to @source_class
10436 * Returns: TRUE if source have proper visibility and acessibility to target
10439 mono_class_can_access_class (MonoClass *source_class, MonoClass *target_class)
10441 return can_access_type (source_class, target_class);
10445 * mono_type_is_valid_enum_basetype:
10446 * @type: The MonoType to check
10448 * Returns: TRUE if the type can be used as the basetype of an enum
10450 gboolean mono_type_is_valid_enum_basetype (MonoType * type) {
10451 switch (type->type) {
10454 case MONO_TYPE_BOOLEAN:
10457 case MONO_TYPE_CHAR:
10471 * mono_class_is_valid_enum:
10472 * @klass: An enum class to be validated
10474 * This method verify the required properties an enum should have.
10476 * Returns: TRUE if the informed enum class is valid
10478 * FIXME: TypeBuilder enums are allowed to implement interfaces, but since they cannot have methods, only empty interfaces are possible
10479 * FIXME: enum types are not allowed to have a cctor, but mono_reflection_create_runtime_class sets has_cctor to 1 for all types
10480 * FIXME: TypeBuilder enums can have any kind of static fields, but the spec is very explicit about that (P II 14.3)
10482 gboolean mono_class_is_valid_enum (MonoClass *klass) {
10483 MonoClassField * field;
10484 gpointer iter = NULL;
10485 gboolean found_base_field = FALSE;
10487 g_assert (klass->enumtype);
10488 /* we cannot test against mono_defaults.enum_class, or mcs won't be able to compile the System namespace*/
10489 if (!klass->parent || strcmp (klass->parent->name, "Enum") || strcmp (klass->parent->name_space, "System") ) {
10493 if ((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) != TYPE_ATTRIBUTE_AUTO_LAYOUT)
10496 while ((field = mono_class_get_fields (klass, &iter))) {
10497 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
10498 if (found_base_field)
10500 found_base_field = TRUE;
10501 if (!mono_type_is_valid_enum_basetype (field->type))
10506 if (!found_base_field)
10509 if (klass->method.count > 0)
10516 mono_generic_class_is_generic_type_definition (MonoGenericClass *gklass)
10518 return gklass->context.class_inst == gklass->container_class->generic_container->context.class_inst;
10522 * mono_class_setup_interface_id:
10524 * Initializes MonoClass::interface_id if required.
10526 * LOCKING: Acquires the loader lock.
10529 mono_class_setup_interface_id (MonoClass *klass)
10531 mono_loader_lock ();
10532 if (MONO_CLASS_IS_INTERFACE (klass) && !klass->interface_id)
10533 klass->interface_id = mono_get_unique_iid (klass);
10534 mono_loader_unlock ();
10538 * mono_class_alloc_ext:
10540 * Allocate klass->ext if not already done.
10543 mono_class_alloc_ext (MonoClass *klass)
10550 ext = (MonoClassExt *)mono_class_alloc0 (klass, sizeof (MonoClassExt));
10551 mono_image_lock (klass->image);
10552 mono_memory_barrier ();
10555 class_ext_size += sizeof (MonoClassExt);
10556 mono_image_unlock (klass->image);
10560 * mono_class_setup_interfaces:
10562 * Initialize klass->interfaces/interfaces_count.
10563 * LOCKING: Acquires the loader lock.
10564 * This function can fail the type.
10567 mono_class_setup_interfaces (MonoClass *klass, MonoError *error)
10569 int i, interface_count;
10570 MonoClass **interfaces;
10572 mono_error_init (error);
10574 if (klass->interfaces_inited)
10577 if (klass->rank == 1 && klass->byval_arg.type != MONO_TYPE_ARRAY) {
10578 MonoType *args [1];
10580 /* generic IList, ICollection, IEnumerable */
10581 interface_count = mono_defaults.generic_ireadonlylist_class ? 2 : 1;
10582 interfaces = (MonoClass **)mono_image_alloc0 (klass->image, sizeof (MonoClass*) * interface_count);
10584 args [0] = &klass->element_class->byval_arg;
10585 interfaces [0] = mono_class_bind_generic_parameters (
10586 mono_defaults.generic_ilist_class, 1, args, FALSE);
10587 if (interface_count > 1)
10588 interfaces [1] = mono_class_bind_generic_parameters (
10589 mono_defaults.generic_ireadonlylist_class, 1, args, FALSE);
10590 } else if (klass->generic_class) {
10591 MonoClass *gklass = klass->generic_class->container_class;
10593 mono_class_setup_interfaces (gklass, error);
10594 if (!mono_error_ok (error)) {
10595 mono_class_set_type_load_failure (klass, "Could not setup the interfaces");
10599 interface_count = gklass->interface_count;
10600 interfaces = mono_class_new0 (klass, MonoClass *, interface_count);
10601 for (i = 0; i < interface_count; i++) {
10602 interfaces [i] = mono_class_inflate_generic_class_checked (gklass->interfaces [i], mono_generic_class_get_context (klass->generic_class), error);
10603 if (!mono_error_ok (error)) {
10604 mono_class_set_type_load_failure (klass, "Could not setup the interfaces");
10609 interface_count = 0;
10613 mono_image_lock (klass->image);
10615 if (!klass->interfaces_inited) {
10616 klass->interface_count = interface_count;
10617 klass->interfaces = interfaces;
10619 mono_memory_barrier ();
10621 klass->interfaces_inited = TRUE;
10624 mono_image_unlock (klass->image);
10628 mono_field_resolve_type (MonoClassField *field, MonoError *error)
10630 MonoClass *klass = field->parent;
10631 MonoImage *image = klass->image;
10632 MonoClass *gtd = klass->generic_class ? mono_class_get_generic_type_definition (klass) : NULL;
10633 int field_idx = field - klass->fields;
10635 mono_error_init (error);
10638 MonoClassField *gfield = >d->fields [field_idx];
10639 MonoType *gtype = mono_field_get_type_checked (gfield, error);
10640 if (!mono_error_ok (error)) {
10641 mono_class_set_type_load_failure (klass, "Could not load field %d type due to: %s", field_idx, mono_error_get_message (error));
10644 field->type = mono_class_inflate_generic_type_no_copy (image, gtype, mono_class_get_context (klass), error);
10645 if (!mono_error_ok (error)) {
10646 mono_class_set_type_load_failure (klass, "Could not load field %d type due to: %s", field_idx, mono_error_get_message (error));
10650 guint32 cols [MONO_FIELD_SIZE];
10651 MonoGenericContainer *container = NULL;
10652 int idx = klass->field.first + field_idx;
10654 /*FIXME, in theory we do not lazy load SRE fields*/
10655 g_assert (!image_is_dynamic (image));
10657 if (klass->generic_container) {
10658 container = klass->generic_container;
10660 container = gtd->generic_container;
10661 g_assert (container);
10664 /* klass->field.first and idx points into the fieldptr table */
10665 mono_metadata_decode_table_row (image, MONO_TABLE_FIELD, idx, cols, MONO_FIELD_SIZE);
10667 if (!mono_verifier_verify_field_signature (image, cols [MONO_FIELD_SIGNATURE], NULL)) {
10668 mono_error_set_type_load_class (error, klass, "Could not verify field %s signature", field->name);;
10669 mono_class_set_type_load_failure (klass, "%s", mono_error_get_message (error));
10673 sig = mono_metadata_blob_heap (image, cols [MONO_FIELD_SIGNATURE]);
10675 mono_metadata_decode_value (sig, &sig);
10676 /* FIELD signature == 0x06 */
10677 g_assert (*sig == 0x06);
10679 field->type = mono_metadata_parse_type_checked (image, container, cols [MONO_FIELD_FLAGS], FALSE, sig + 1, &sig, error);
10680 if (!field->type) {
10681 mono_class_set_type_load_failure (klass, "Could not load field %d type due to: %s", field_idx, mono_error_get_message (error));
10687 mono_field_resolve_flags (MonoClassField *field)
10689 MonoClass *klass = field->parent;
10690 MonoImage *image = klass->image;
10691 MonoClass *gtd = klass->generic_class ? mono_class_get_generic_type_definition (klass) : NULL;
10692 int field_idx = field - klass->fields;
10696 MonoClassField *gfield = >d->fields [field_idx];
10697 return mono_field_get_flags (gfield);
10699 int idx = klass->field.first + field_idx;
10701 /*FIXME, in theory we do not lazy load SRE fields*/
10702 g_assert (!image_is_dynamic (image));
10704 return mono_metadata_decode_table_row_col (image, MONO_TABLE_FIELD, idx, MONO_FIELD_FLAGS);
10709 * mono_class_get_fields_lazy:
10710 * @klass: the MonoClass to act on
10712 * This routine is an iterator routine for retrieving the fields in a class.
10713 * Only minimal information about fields are loaded. Accessors must be used
10714 * for all MonoClassField returned.
10716 * You must pass a gpointer that points to zero and is treated as an opaque handle to
10717 * iterate over all of the elements. When no more values are
10718 * available, the return value is NULL.
10720 * Returns: a @MonoClassField* on each iteration, or NULL when no more fields are available.
10723 mono_class_get_fields_lazy (MonoClass* klass, gpointer *iter)
10725 MonoClassField* field;
10729 mono_class_setup_basic_field_info (klass);
10730 if (!klass->fields)
10732 /* start from the first */
10733 if (klass->field.count) {
10734 *iter = &klass->fields [0];
10735 return (MonoClassField *)*iter;
10741 field = (MonoClassField *)*iter;
10743 if (field < &klass->fields [klass->field.count]) {
10745 return (MonoClassField *)*iter;
10751 mono_class_full_name (MonoClass *klass)
10753 return mono_type_full_name (&klass->byval_arg);
10756 /* Declare all shared lazy type lookup functions */
10757 GENERATE_TRY_GET_CLASS_WITH_CACHE (safehandle, System.Runtime.InteropServices, SafeHandle)