2 * loader.c: Image Loader
5 * Paolo Molaro (lupus@ximian.com)
6 * Miguel de Icaza (miguel@ximian.com)
7 * Patrik Torstensson (patrik.torstensson@labs2.com)
9 * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
10 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
11 * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
13 * This file is used by the interpreter and the JIT engine to locate
14 * assemblies. Used to load AssemblyRef and later to resolve various
18 * This should keep track of the assembly versions that we are loading.
20 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
27 #include <mono/metadata/metadata.h>
28 #include <mono/metadata/image.h>
29 #include <mono/metadata/assembly.h>
30 #include <mono/metadata/tokentype.h>
31 #include <mono/metadata/tabledefs.h>
32 #include <mono/metadata/metadata-internals.h>
33 #include <mono/metadata/loader.h>
34 #include <mono/metadata/class-internals.h>
35 #include <mono/metadata/debug-helpers.h>
36 #include <mono/metadata/reflection.h>
37 #include <mono/metadata/profiler.h>
38 #include <mono/metadata/profiler-private.h>
39 #include <mono/metadata/exception.h>
40 #include <mono/metadata/marshal.h>
41 #include <mono/metadata/lock-tracer.h>
42 #include <mono/metadata/verify-internals.h>
43 #include <mono/utils/mono-logger-internals.h>
44 #include <mono/utils/mono-dl.h>
45 #include <mono/utils/mono-membar.h>
46 #include <mono/utils/mono-counters.h>
47 #include <mono/utils/mono-error-internals.h>
48 #include <mono/utils/mono-tls.h>
49 #include <mono/utils/mono-path.h>
51 MonoDefaults mono_defaults;
54 * This lock protects the hash tables inside MonoImage used by the metadata
55 * loading functions in class.c and loader.c.
57 * See domain-internals.h for locking policy in combination with the
60 static MonoCoopMutex loader_mutex;
61 static mono_mutex_t global_loader_data_mutex;
62 static gboolean loader_lock_inited;
65 static guint32 inflated_signatures_size;
66 static guint32 memberref_sig_cache_size;
67 static guint32 methods_size;
68 static guint32 signatures_size;
71 * This TLS variable contains the last type load error encountered by the loader.
73 MonoNativeTlsKey loader_error_thread_id;
76 * This TLS variable holds how many times the current thread has acquired the loader
79 MonoNativeTlsKey loader_lock_nest_id;
81 static void dllmap_cleanup (void);
85 global_loader_data_lock (void)
87 mono_locks_os_acquire (&global_loader_data_mutex, LoaderGlobalDataLock);
91 global_loader_data_unlock (void)
93 mono_locks_os_release (&global_loader_data_mutex, LoaderGlobalDataLock);
99 static gboolean inited;
102 mono_coop_mutex_init_recursive (&loader_mutex);
103 mono_os_mutex_init_recursive (&global_loader_data_mutex);
104 loader_lock_inited = TRUE;
106 mono_native_tls_alloc (&loader_error_thread_id, NULL);
107 mono_native_tls_alloc (&loader_lock_nest_id, NULL);
109 mono_counters_init ();
110 mono_counters_register ("Inflated signatures size",
111 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_signatures_size);
112 mono_counters_register ("Memberref signature cache size",
113 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &memberref_sig_cache_size);
114 mono_counters_register ("MonoMethod size",
115 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &methods_size);
116 mono_counters_register ("MonoMethodSignature size",
117 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &signatures_size);
124 mono_loader_cleanup (void)
128 mono_native_tls_free (loader_error_thread_id);
129 mono_native_tls_free (loader_lock_nest_id);
131 mono_coop_mutex_destroy (&loader_mutex);
132 mono_os_mutex_destroy (&global_loader_data_mutex);
133 loader_lock_inited = FALSE;
137 * mono_loader_get_last_error:
139 * Returns information about the last type load exception encountered by the loader, or
140 * NULL. After use, the exception should be cleared by calling mono_loader_clear_error.
143 mono_loader_get_last_error (void)
145 return (MonoLoaderError*)mono_native_tls_get_value (loader_error_thread_id);
149 mono_loader_assert_no_error (void)
151 MonoLoaderError *error = mono_loader_get_last_error ();
154 g_print ("Unhandled loader error: %x, %s %s %s\n", error->exception_type, error->msg, error->assembly_name, error->class_name);
155 g_assert_not_reached ();
160 * mono_loader_clear_error:
162 * Disposes any loader error messages on this thread
165 mono_loader_clear_error (void)
167 MonoLoaderError *ex = (MonoLoaderError*)mono_native_tls_get_value (loader_error_thread_id);
170 g_free (ex->class_name);
171 g_free (ex->assembly_name);
175 mono_native_tls_set_value (loader_error_thread_id, NULL);
180 * mono_loader_error_prepare_exception:
181 * @error: The MonoLoaderError to turn into an exception
183 * This turns a MonoLoaderError into an exception that can be thrown
184 * and resets the Mono Loader Error state during this process.
188 mono_loader_error_prepare_exception (MonoLoaderError *error)
190 MonoException *ex = NULL;
192 switch (error->exception_type) {
193 case MONO_EXCEPTION_TYPE_LOAD: {
194 char *cname = g_strdup (error->class_name);
195 char *aname = g_strdup (error->assembly_name);
196 MonoString *class_name;
198 mono_loader_clear_error ();
200 class_name = mono_string_new (mono_domain_get (), cname);
202 ex = mono_get_exception_type_load (class_name, aname);
207 case MONO_EXCEPTION_MISSING_METHOD: {
208 char *cname = g_strdup (error->class_name);
209 char *aname = g_strdup (error->member_name);
211 mono_loader_clear_error ();
212 ex = mono_get_exception_missing_method (cname, aname);
218 case MONO_EXCEPTION_MISSING_FIELD: {
220 char *cmembername = g_strdup (error->member_name);
222 class_name = mono_type_get_full_name (error->klass);
224 class_name = g_strdup ("");
226 mono_loader_clear_error ();
228 ex = mono_get_exception_missing_field (class_name, cmembername);
230 g_free (cmembername);
234 case MONO_EXCEPTION_FILE_NOT_FOUND: {
239 msg = g_strdup_printf ("Cannot resolve dependency to assembly '%s' because it has not been preloaded. When using the ReflectionOnly APIs, dependent assemblies must be pre-loaded or loaded on demand through the ReflectionOnlyAssemblyResolve event.", error->assembly_name);
241 msg = g_strdup_printf ("Could not load file or assembly '%s' or one of its dependencies.", error->assembly_name);
242 filename = g_strdup (error->assembly_name);
243 /* Has to call this before calling anything which might call mono_class_init () */
244 mono_loader_clear_error ();
245 ex = mono_get_exception_file_not_found2 (msg, mono_string_new (mono_domain_get (), filename));
251 case MONO_EXCEPTION_BAD_IMAGE: {
252 char *msg = g_strdup (error->msg);
253 mono_loader_clear_error ();
254 ex = mono_get_exception_bad_image_format (msg);
260 g_assert_not_reached ();
267 * find_cached_memberref_sig:
269 * Return a cached copy of the memberref signature identified by SIG_IDX.
270 * We use a gpointer since the cache stores both MonoTypes and MonoMethodSignatures.
271 * A cache is needed since the type/signature parsing routines allocate everything
272 * from a mempool, so without a cache, multiple requests for the same signature would
273 * lead to unbounded memory growth. For normal methods/fields this is not a problem
274 * since the resulting methods/fields are cached, but inflated methods/fields cannot
276 * LOCKING: Acquires the loader lock.
279 find_cached_memberref_sig (MonoImage *image, guint32 sig_idx)
283 mono_image_lock (image);
284 res = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (sig_idx));
285 mono_image_unlock (image);
291 cache_memberref_sig (MonoImage *image, guint32 sig_idx, gpointer sig)
295 mono_image_lock (image);
296 prev_sig = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (sig_idx));
298 /* Somebody got in before us */
302 g_hash_table_insert (image->memberref_signatures, GUINT_TO_POINTER (sig_idx), sig);
303 /* An approximation based on glib 2.18 */
304 memberref_sig_cache_size += sizeof (gpointer) * 4;
306 mono_image_unlock (image);
311 static MonoClassField*
312 field_from_memberref (MonoImage *image, guint32 token, MonoClass **retklass,
313 MonoGenericContext *context, MonoError *error)
315 MonoClass *klass = NULL;
316 MonoClassField *field;
317 MonoTableInfo *tables = image->tables;
320 guint32 nindex, class_index;
323 guint32 idx = mono_metadata_token_index (token);
325 mono_error_init (error);
327 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
328 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
329 class_index = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
331 fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
333 if (!mono_verifier_verify_memberref_field_signature (image, cols [MONO_MEMBERREF_SIGNATURE], NULL)) {
334 mono_error_set_bad_image (error, image, "Bad field '%s' signature 0x%08x", class_index, token);
338 switch (class_index) {
339 case MONO_MEMBERREF_PARENT_TYPEDEF:
340 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | nindex, error);
342 case MONO_MEMBERREF_PARENT_TYPEREF:
343 klass = mono_class_from_typeref_checked (image, MONO_TOKEN_TYPE_REF | nindex, error);
345 case MONO_MEMBERREF_PARENT_TYPESPEC:
346 klass = mono_class_get_and_inflate_typespec_checked (image, MONO_TOKEN_TYPE_SPEC | nindex, context, error);
349 mono_error_set_bad_image (error, image, "Bad field field '%s' signature 0x%08x", class_index, token);
355 ptr = mono_metadata_blob_heap (image, cols [MONO_MEMBERREF_SIGNATURE]);
356 mono_metadata_decode_blob_size (ptr, &ptr);
357 /* we may want to check the signature here... */
360 mono_error_set_field_load (error, klass, fname, "Bad field signature class token %08x field name %s token %08x", class_index, fname, token);
364 /* FIXME: This needs a cache, especially for generic instances, since
365 * we ask mono_metadata_parse_type_checked () to allocates everything from a mempool.
366 * FIXME part2, mono_metadata_parse_type_checked actually allows for a transient type instead.
367 * FIXME part3, transient types are not 100% transient, so we need to take care of that first.
369 sig_type = (MonoType *)find_cached_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE]);
371 MonoError inner_error;
372 sig_type = mono_metadata_parse_type_checked (image, NULL, 0, FALSE, ptr, &ptr, &inner_error);
373 if (sig_type == NULL) {
374 mono_error_set_field_load (error, klass, fname, "Could not parse field '%s' signature %08x due to: %s", fname, token, mono_error_get_message (&inner_error));
375 mono_error_cleanup (&inner_error);
378 sig_type = (MonoType *)cache_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE], sig_type);
381 mono_class_init (klass); /*FIXME is this really necessary?*/
384 field = mono_class_get_field_from_name_full (klass, fname, sig_type);
387 mono_loader_assert_no_error ();
388 mono_error_set_field_load (error, klass, fname, "Could not find field '%s'", fname);
395 * mono_field_from_token:
396 * @deprecated use the _checked variant
397 * Notes: runtime code MUST not use this function
400 mono_field_from_token (MonoImage *image, guint32 token, MonoClass **retklass, MonoGenericContext *context)
403 MonoClassField *res = mono_field_from_token_checked (image, token, retklass, context, &error);
404 g_assert (mono_error_ok (&error));
409 mono_field_from_token_checked (MonoImage *image, guint32 token, MonoClass **retklass, MonoGenericContext *context, MonoError *error)
413 MonoClassField *field;
415 mono_error_init (error);
417 if (image_is_dynamic (image)) {
418 MonoClassField *result;
419 MonoClass *handle_class;
422 MonoError inner_error;
423 result = (MonoClassField *)mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context, &inner_error);
424 mono_error_cleanup (&inner_error);
425 // This checks the memberref type as well
426 if (!result || handle_class != mono_defaults.fieldhandle_class) {
427 mono_error_set_bad_image (error, image, "Bad field token 0x%08x", token);
430 *retklass = result->parent;
434 if ((field = (MonoClassField *)mono_conc_hashtable_lookup (image->field_cache, GUINT_TO_POINTER (token)))) {
435 *retklass = field->parent;
439 if (mono_metadata_token_table (token) == MONO_TABLE_MEMBERREF) {
440 field = field_from_memberref (image, token, retklass, context, error);
441 mono_loader_assert_no_error ();
443 type = mono_metadata_typedef_from_field (image, mono_metadata_token_index (token));
445 mono_error_set_bad_image (error, image, "Invalid field token 0x%08x", token);
448 k = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | type, error);
455 field = mono_class_get_field (k, token);
457 mono_loader_assert_no_error ();
458 mono_error_set_bad_image (error, image, "Could not resolve field token 0x%08x", token);
462 if (field && field->parent && !field->parent->generic_class && !field->parent->generic_container) {
463 mono_image_lock (image);
464 mono_conc_hashtable_insert (image->field_cache, GUINT_TO_POINTER (token), field);
465 mono_image_unlock (image);
468 mono_loader_assert_no_error ();
473 mono_metadata_signature_vararg_match (MonoMethodSignature *sig1, MonoMethodSignature *sig2)
477 if (sig1->hasthis != sig2->hasthis ||
478 sig1->sentinelpos != sig2->sentinelpos)
481 for (i = 0; i < sig1->sentinelpos; i++) {
482 MonoType *p1 = sig1->params[i];
483 MonoType *p2 = sig2->params[i];
485 /*if (p1->attrs != p2->attrs)
488 if (!mono_metadata_type_equal (p1, p2))
492 if (!mono_metadata_type_equal (sig1->ret, sig2->ret))
498 find_method_in_class (MonoClass *klass, const char *name, const char *qname, const char *fqname,
499 MonoMethodSignature *sig, MonoClass *from_class, MonoError *error)
503 /* Search directly in the metadata to avoid calling setup_methods () */
504 mono_error_init (error);
506 /* FIXME: !from_class->generic_class condition causes test failures. */
507 if (klass->type_token && !image_is_dynamic (klass->image) && !klass->methods && !klass->rank && klass == from_class && !from_class->generic_class) {
508 for (i = 0; i < klass->method.count; ++i) {
509 guint32 cols [MONO_METHOD_SIZE];
512 MonoMethodSignature *other_sig;
514 mono_metadata_decode_table_row (klass->image, MONO_TABLE_METHOD, klass->method.first + i, cols, MONO_METHOD_SIZE);
516 m_name = mono_metadata_string_heap (klass->image, cols [MONO_METHOD_NAME]);
518 if (!((fqname && !strcmp (m_name, fqname)) ||
519 (qname && !strcmp (m_name, qname)) ||
520 (name && !strcmp (m_name, name))))
523 method = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | (klass->method.first + i + 1), klass, NULL, error);
524 if (!mono_error_ok (error)) //bail out if we hit a loader error
527 other_sig = mono_method_signature_checked (method, error);
528 if (!mono_error_ok (error)) //bail out if we hit a loader error
530 if (other_sig && (sig->call_convention != MONO_CALL_VARARG) && mono_metadata_signature_equal (sig, other_sig))
536 mono_class_setup_methods (klass); /* FIXME don't swallow the error here. */
538 We can't fail lookup of methods otherwise the runtime will fail with MissingMethodException instead of TypeLoadException.
539 See mono/tests/generic-type-load-exception.2.il
540 FIXME we should better report this error to the caller
542 if (!klass->methods || mono_class_has_failure (klass)) {
543 mono_error_set_type_load_class (error, klass, "Could not find method due to a type load error"); //FIXME get the error from the class
547 for (i = 0; i < klass->method.count; ++i) {
548 MonoMethod *m = klass->methods [i];
549 MonoMethodSignature *msig;
551 /* We must cope with failing to load some of the types. */
555 if (!((fqname && !strcmp (m->name, fqname)) ||
556 (qname && !strcmp (m->name, qname)) ||
557 (name && !strcmp (m->name, name))))
559 msig = mono_method_signature_checked (m, error);
560 if (!mono_error_ok (error)) //bail out if we hit a loader error
566 if (sig->call_convention == MONO_CALL_VARARG) {
567 if (mono_metadata_signature_vararg_match (sig, msig))
570 if (mono_metadata_signature_equal (sig, msig))
575 if (i < klass->method.count)
576 return mono_class_get_method_by_index (from_class, i);
581 find_method (MonoClass *in_class, MonoClass *ic, const char* name, MonoMethodSignature *sig, MonoClass *from_class, MonoError *error)
584 char *qname, *fqname, *class_name;
585 gboolean is_interface;
586 MonoMethod *result = NULL;
587 MonoClass *initial_class = in_class;
589 mono_error_init (error);
590 is_interface = MONO_CLASS_IS_INTERFACE (in_class);
593 class_name = mono_type_get_name_full (&ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
595 qname = g_strconcat (class_name, ".", name, NULL);
596 if (ic->name_space && ic->name_space [0])
597 fqname = g_strconcat (ic->name_space, ".", class_name, ".", name, NULL);
601 class_name = qname = fqname = NULL;
604 g_assert (from_class);
605 result = find_method_in_class (in_class, name, qname, fqname, sig, from_class, error);
606 if (result || !mono_error_ok (error))
609 if (name [0] == '.' && (!strcmp (name, ".ctor") || !strcmp (name, ".cctor")))
613 * This happens when we fail to lazily load the interfaces of one of the types.
614 * On such case we can't just bail out since user code depends on us trying harder.
616 if (from_class->interface_offsets_count != in_class->interface_offsets_count) {
617 in_class = in_class->parent;
618 from_class = from_class->parent;
622 for (i = 0; i < in_class->interface_offsets_count; i++) {
623 MonoClass *in_ic = in_class->interfaces_packed [i];
624 MonoClass *from_ic = from_class->interfaces_packed [i];
625 char *ic_qname, *ic_fqname, *ic_class_name;
627 ic_class_name = mono_type_get_name_full (&in_ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
628 ic_qname = g_strconcat (ic_class_name, ".", name, NULL);
629 if (in_ic->name_space && in_ic->name_space [0])
630 ic_fqname = g_strconcat (in_ic->name_space, ".", ic_class_name, ".", name, NULL);
634 result = find_method_in_class (in_ic, ic ? name : NULL, ic_qname, ic_fqname, sig, from_ic, error);
635 g_free (ic_class_name);
638 if (result || !mono_error_ok (error))
642 in_class = in_class->parent;
643 from_class = from_class->parent;
645 g_assert (!in_class == !from_class);
648 result = find_method_in_class (mono_defaults.object_class, name, qname, fqname, sig, mono_defaults.object_class, error);
650 //we did not find the method
651 if (!result && mono_error_ok (error)) {
652 char *desc = mono_signature_get_desc (sig, FALSE);
653 mono_error_set_method_load (error, initial_class, name, "Could not find method with signature %s", desc);
664 static MonoMethodSignature*
665 inflate_generic_signature_checked (MonoImage *image, MonoMethodSignature *sig, MonoGenericContext *context, MonoError *error)
667 MonoMethodSignature *res;
671 mono_error_init (error);
675 res = (MonoMethodSignature *)g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + ((gint32)sig->param_count) * sizeof (MonoType*));
676 res->param_count = sig->param_count;
677 res->sentinelpos = -1;
678 res->ret = mono_class_inflate_generic_type_checked (sig->ret, context, error);
679 if (!mono_error_ok (error))
681 is_open = mono_class_is_open_constructed_type (res->ret);
682 for (i = 0; i < sig->param_count; ++i) {
683 res->params [i] = mono_class_inflate_generic_type_checked (sig->params [i], context, error);
684 if (!mono_error_ok (error))
688 is_open = mono_class_is_open_constructed_type (res->params [i]);
690 res->hasthis = sig->hasthis;
691 res->explicit_this = sig->explicit_this;
692 res->call_convention = sig->call_convention;
693 res->pinvoke = sig->pinvoke;
694 res->generic_param_count = sig->generic_param_count;
695 res->sentinelpos = sig->sentinelpos;
696 res->has_type_parameters = is_open;
697 res->is_inflated = 1;
702 mono_metadata_free_type (res->ret);
703 for (i = 0; i < sig->param_count; ++i) {
705 mono_metadata_free_type (res->params [i]);
712 * mono_inflate_generic_signature:
714 * Inflate SIG with CONTEXT, and return a canonical copy. On error, set ERROR, and return NULL.
717 mono_inflate_generic_signature (MonoMethodSignature *sig, MonoGenericContext *context, MonoError *error)
719 MonoMethodSignature *res, *cached;
721 res = inflate_generic_signature_checked (NULL, sig, context, error);
722 if (!mono_error_ok (error))
724 cached = mono_metadata_get_inflated_signature (res, context);
726 mono_metadata_free_inflated_signature (res);
730 static MonoMethodHeader*
731 inflate_generic_header (MonoMethodHeader *header, MonoGenericContext *context, MonoError *error)
733 size_t locals_size = sizeof (gpointer) * header->num_locals;
734 size_t clauses_size = header->num_clauses * sizeof (MonoExceptionClause);
735 size_t header_size = MONO_SIZEOF_METHOD_HEADER + locals_size + clauses_size;
736 MonoMethodHeader *res = (MonoMethodHeader *)g_malloc0 (header_size);
737 res->num_locals = header->num_locals;
738 res->clauses = (MonoExceptionClause *) &res->locals [res->num_locals] ;
739 memcpy (res->clauses, header->clauses, clauses_size);
741 res->code = header->code;
742 res->code_size = header->code_size;
743 res->max_stack = header->max_stack;
744 res->num_clauses = header->num_clauses;
745 res->init_locals = header->init_locals;
747 res->is_transient = TRUE;
749 mono_error_init (error);
751 for (int i = 0; i < header->num_locals; ++i) {
752 res->locals [i] = mono_class_inflate_generic_type_checked (header->locals [i], context, error);
756 if (res->num_clauses) {
757 for (int i = 0; i < header->num_clauses; ++i) {
758 MonoExceptionClause *clause = &res->clauses [i];
759 if (clause->flags != MONO_EXCEPTION_CLAUSE_NONE)
761 clause->data.catch_class = mono_class_inflate_generic_class_checked (clause->data.catch_class, context, error);
773 * token is the method_ref/def/spec token used in a call IL instruction.
774 * @deprecated use the _checked variant
775 * Notes: runtime code MUST not use this function
778 mono_method_get_signature_full (MonoMethod *method, MonoImage *image, guint32 token, MonoGenericContext *context)
781 MonoMethodSignature *res = mono_method_get_signature_checked (method, image, token, context, &error);
782 mono_error_cleanup (&error);
787 mono_method_get_signature_checked (MonoMethod *method, MonoImage *image, guint32 token, MonoGenericContext *context, MonoError *error)
789 int table = mono_metadata_token_table (token);
790 int idx = mono_metadata_token_index (token);
792 guint32 cols [MONO_MEMBERREF_SIZE];
793 MonoMethodSignature *sig;
796 mono_error_init (error);
798 /* !table is for wrappers: we should really assign their own token to them */
799 if (!table || table == MONO_TABLE_METHOD)
800 return mono_method_signature_checked (method, error);
802 if (table == MONO_TABLE_METHODSPEC) {
803 /* the verifier (do_invoke_method) will turn the NULL into a verifier error */
804 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) || !method->is_inflated) {
805 mono_error_set_bad_image (error, image, "Method is a pinvoke or open generic");
809 return mono_method_signature_checked (method, error);
812 if (method->klass->generic_class)
813 return mono_method_signature_checked (method, error);
815 if (image_is_dynamic (image)) {
816 sig = mono_reflection_lookup_signature (image, method, token, error);
820 mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
821 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
823 sig = (MonoMethodSignature *)find_cached_memberref_sig (image, sig_idx);
825 if (!mono_verifier_verify_memberref_method_signature (image, sig_idx, NULL)) {
826 guint32 klass = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
827 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
829 //FIXME include the verification error
830 mono_error_set_bad_image (error, image, "Bad method signature class token 0x%08x field name %s token 0x%08x", klass, fname, token);
834 ptr = mono_metadata_blob_heap (image, sig_idx);
835 mono_metadata_decode_blob_size (ptr, &ptr);
837 sig = mono_metadata_parse_method_signature_full (image, NULL, 0, ptr, NULL, error);
841 sig = (MonoMethodSignature *)cache_memberref_sig (image, sig_idx, sig);
843 /* FIXME: we probably should verify signature compat in the dynamic case too*/
844 if (!mono_verifier_is_sig_compatible (image, method, sig)) {
845 guint32 klass = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
846 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
848 mono_error_set_bad_image (error, image, "Incompatible method signature class token 0x%08x field name %s token 0x%08x", klass, fname, token);
854 MonoMethodSignature *cached;
856 /* This signature is not owned by a MonoMethod, so need to cache */
857 sig = inflate_generic_signature_checked (image, sig, context, error);
858 if (!mono_error_ok (error))
861 cached = mono_metadata_get_inflated_signature (sig, context);
863 mono_metadata_free_inflated_signature (sig);
865 inflated_signatures_size += mono_metadata_signature_size (cached);
869 g_assert (mono_error_ok (error));
874 * token is the method_ref/def/spec token used in a call IL instruction.
875 * @deprecated use the _checked variant
876 * Notes: runtime code MUST not use this function
879 mono_method_get_signature (MonoMethod *method, MonoImage *image, guint32 token)
882 MonoMethodSignature *res = mono_method_get_signature_checked (method, image, token, NULL, &error);
883 mono_error_cleanup (&error);
887 /* this is only for the typespec array methods */
889 mono_method_search_in_array_class (MonoClass *klass, const char *name, MonoMethodSignature *sig)
893 mono_class_setup_methods (klass);
894 g_assert (!mono_class_has_failure (klass)); /*FIXME this should not fail, right?*/
895 for (i = 0; i < klass->method.count; ++i) {
896 MonoMethod *method = klass->methods [i];
897 if (strcmp (method->name, name) == 0 && sig->param_count == method->signature->param_count)
904 method_from_memberref (MonoImage *image, guint32 idx, MonoGenericContext *typespec_context,
905 gboolean *used_context, MonoError *error)
907 MonoClass *klass = NULL;
908 MonoMethod *method = NULL;
909 MonoTableInfo *tables = image->tables;
911 guint32 nindex, class_index, sig_idx;
913 MonoMethodSignature *sig;
916 mono_error_init (error);
918 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, 3);
919 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
920 class_index = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
921 /*g_print ("methodref: 0x%x 0x%x %s\n", class, nindex,
922 mono_metadata_string_heap (m, cols [MONO_MEMBERREF_NAME]));*/
924 mname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
927 * Whether we actually used the `typespec_context' or not.
928 * This is used to tell our caller whether or not it's safe to insert the returned
929 * method into a cache.
932 *used_context = class_index == MONO_MEMBERREF_PARENT_TYPESPEC;
934 switch (class_index) {
935 case MONO_MEMBERREF_PARENT_TYPEREF:
936 klass = mono_class_from_typeref_checked (image, MONO_TOKEN_TYPE_REF | nindex, error);
940 case MONO_MEMBERREF_PARENT_TYPESPEC:
942 * Parse the TYPESPEC in the parent's context.
944 klass = mono_class_get_and_inflate_typespec_checked (image, MONO_TOKEN_TYPE_SPEC | nindex, typespec_context, error);
948 case MONO_MEMBERREF_PARENT_TYPEDEF:
949 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | nindex, error);
953 case MONO_MEMBERREF_PARENT_METHODDEF: {
954 method = mono_get_method_checked (image, MONO_TOKEN_METHOD_DEF | nindex, NULL, NULL, error);
960 mono_error_set_bad_image (error, image, "Memberref parent unknown: class: %d, index %d", class_index, nindex);
965 mono_class_init (klass);
967 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
969 if (!mono_verifier_verify_memberref_method_signature (image, sig_idx, NULL)) {
970 mono_error_set_method_load (error, klass, mname, "Verifier rejected method signature");
974 ptr = mono_metadata_blob_heap (image, sig_idx);
975 mono_metadata_decode_blob_size (ptr, &ptr);
977 sig = (MonoMethodSignature *)find_cached_memberref_sig (image, sig_idx);
979 sig = mono_metadata_parse_method_signature_full (image, NULL, 0, ptr, NULL, error);
983 sig = (MonoMethodSignature *)cache_memberref_sig (image, sig_idx, sig);
986 switch (class_index) {
987 case MONO_MEMBERREF_PARENT_TYPEREF:
988 case MONO_MEMBERREF_PARENT_TYPEDEF:
989 method = find_method (klass, NULL, mname, sig, klass, error);
992 case MONO_MEMBERREF_PARENT_TYPESPEC: {
995 type = &klass->byval_arg;
997 if (type->type != MONO_TYPE_ARRAY && type->type != MONO_TYPE_SZARRAY) {
998 MonoClass *in_class = klass->generic_class ? klass->generic_class->container_class : klass;
999 method = find_method (in_class, NULL, mname, sig, klass, error);
1003 /* we're an array and we created these methods already in klass in mono_class_init () */
1004 method = mono_method_search_in_array_class (klass, mname, sig);
1008 mono_error_set_bad_image (error, image,"Memberref parent unknown: class: %d, index %d", class_index, nindex);
1012 if (!method && mono_error_ok (error)) {
1013 char *msig = mono_signature_get_desc (sig, FALSE);
1014 GString *s = g_string_new (mname);
1015 if (sig->generic_param_count)
1016 g_string_append_printf (s, "<[%d]>", sig->generic_param_count);
1017 g_string_append_printf (s, "(%s)", msig);
1019 msig = g_string_free (s, FALSE);
1021 mono_loader_assert_no_error ();
1022 mono_error_set_method_load (error, klass, mname, "Could not find method %s", msig);
1027 mono_loader_assert_no_error ();
1031 mono_loader_assert_no_error ();
1032 g_assert (!mono_error_ok (error));
1037 method_from_methodspec (MonoImage *image, MonoGenericContext *context, guint32 idx, MonoError *error)
1041 MonoTableInfo *tables = image->tables;
1042 MonoGenericContext new_context;
1043 MonoGenericInst *inst;
1045 guint32 cols [MONO_METHODSPEC_SIZE];
1046 guint32 token, nindex, param_count;
1048 mono_error_init (error);
1050 mono_metadata_decode_row (&tables [MONO_TABLE_METHODSPEC], idx - 1, cols, MONO_METHODSPEC_SIZE);
1051 token = cols [MONO_METHODSPEC_METHOD];
1052 nindex = token >> MONO_METHODDEFORREF_BITS;
1054 if (!mono_verifier_verify_methodspec_signature (image, cols [MONO_METHODSPEC_SIGNATURE], NULL)) {
1055 mono_error_set_bad_image (error, image, "Bad method signals signature 0x%08x", idx);
1059 ptr = mono_metadata_blob_heap (image, cols [MONO_METHODSPEC_SIGNATURE]);
1061 mono_metadata_decode_value (ptr, &ptr);
1063 param_count = mono_metadata_decode_value (ptr, &ptr);
1065 inst = mono_metadata_parse_generic_inst (image, NULL, param_count, ptr, &ptr, error);
1069 if (context && inst->is_open) {
1070 inst = mono_metadata_inflate_generic_inst (inst, context, error);
1071 if (!mono_error_ok (error))
1075 if ((token & MONO_METHODDEFORREF_MASK) == MONO_METHODDEFORREF_METHODDEF) {
1076 method = mono_get_method_checked (image, MONO_TOKEN_METHOD_DEF | nindex, NULL, context, error);
1080 method = method_from_memberref (image, nindex, context, NULL, error);
1086 klass = method->klass;
1088 if (klass->generic_class) {
1089 g_assert (method->is_inflated);
1090 method = ((MonoMethodInflated *) method)->declaring;
1093 new_context.class_inst = klass->generic_class ? klass->generic_class->context.class_inst : NULL;
1094 new_context.method_inst = inst;
1096 method = mono_class_inflate_generic_method_full_checked (method, klass, &new_context, error);
1097 mono_loader_assert_no_error ();
1101 struct _MonoDllMap {
1109 static MonoDllMap *global_dll_map;
1112 mono_dllmap_lookup_list (MonoDllMap *dll_map, const char *dll, const char* func, const char **rdll, const char **rfunc) {
1120 global_loader_data_lock ();
1123 * we use the first entry we find that matches, since entries from
1124 * the config file are prepended to the list and we document that the
1125 * later entries win.
1127 for (; dll_map; dll_map = dll_map->next) {
1128 if (dll_map->dll [0] == 'i' && dll_map->dll [1] == ':') {
1129 if (g_ascii_strcasecmp (dll_map->dll + 2, dll))
1131 } else if (strcmp (dll_map->dll, dll)) {
1134 if (!found && dll_map->target) {
1135 *rdll = dll_map->target;
1137 /* we don't quit here, because we could find a full
1138 * entry that matches also function and that has priority.
1141 if (dll_map->func && strcmp (dll_map->func, func) == 0) {
1142 *rfunc = dll_map->target_func;
1147 global_loader_data_unlock ();
1152 mono_dllmap_lookup (MonoImage *assembly, const char *dll, const char* func, const char **rdll, const char **rfunc)
1155 if (assembly && assembly->dll_map) {
1156 res = mono_dllmap_lookup_list (assembly->dll_map, dll, func, rdll, rfunc);
1160 return mono_dllmap_lookup_list (global_dll_map, dll, func, rdll, rfunc);
1164 * mono_dllmap_insert:
1165 * @assembly: if NULL, this is a global mapping, otherwise the remapping of the dynamic library will only apply to the specified assembly
1166 * @dll: The name of the external library, as it would be found in the DllImport declaration. If prefixed with 'i:' the matching of the library name is done without case sensitivity
1167 * @func: if not null, the mapping will only applied to the named function (the value of EntryPoint)
1168 * @tdll: The name of the library to map the specified @dll if it matches.
1169 * @tfunc: if func is not NULL, the name of the function that replaces the invocation
1171 * LOCKING: Acquires the loader lock.
1173 * This function is used to programatically add DllImport remapping in either
1174 * a specific assembly, or as a global remapping. This is done by remapping
1175 * references in a DllImport attribute from the @dll library name into the @tdll
1176 * name. If the @dll name contains the prefix "i:", the comparison of the
1177 * library name is done without case sensitivity.
1179 * If you pass @func, this is the name of the EntryPoint in a DllImport if specified
1180 * or the name of the function as determined by DllImport. If you pass @func, you
1181 * must also pass @tfunc which is the name of the target function to invoke on a match.
1184 * mono_dllmap_insert (NULL, "i:libdemo.dll", NULL, relocated_demo_path, NULL);
1186 * The above will remap DllImport statments for "libdemo.dll" and "LIBDEMO.DLL" to
1187 * the contents of relocated_demo_path for all assemblies in the Mono process.
1189 * NOTE: This can be called before the runtime is initialized, for example from
1190 * mono_config_parse ().
1193 mono_dllmap_insert (MonoImage *assembly, const char *dll, const char *func, const char *tdll, const char *tfunc)
1197 mono_loader_init ();
1200 entry = (MonoDllMap *)g_malloc0 (sizeof (MonoDllMap));
1201 entry->dll = dll? g_strdup (dll): NULL;
1202 entry->target = tdll? g_strdup (tdll): NULL;
1203 entry->func = func? g_strdup (func): NULL;
1204 entry->target_func = tfunc? g_strdup (tfunc): NULL;
1206 global_loader_data_lock ();
1207 entry->next = global_dll_map;
1208 global_dll_map = entry;
1209 global_loader_data_unlock ();
1211 entry = (MonoDllMap *)mono_image_alloc0 (assembly, sizeof (MonoDllMap));
1212 entry->dll = dll? mono_image_strdup (assembly, dll): NULL;
1213 entry->target = tdll? mono_image_strdup (assembly, tdll): NULL;
1214 entry->func = func? mono_image_strdup (assembly, func): NULL;
1215 entry->target_func = tfunc? mono_image_strdup (assembly, tfunc): NULL;
1217 mono_image_lock (assembly);
1218 entry->next = assembly->dll_map;
1219 assembly->dll_map = entry;
1220 mono_image_unlock (assembly);
1225 free_dllmap (MonoDllMap *map)
1228 MonoDllMap *next = map->next;
1231 g_free (map->target);
1233 g_free (map->target_func);
1240 dllmap_cleanup (void)
1242 free_dllmap (global_dll_map);
1243 global_dll_map = NULL;
1246 static GHashTable *global_module_map;
1249 cached_module_load (const char *name, int flags, char **err)
1255 global_loader_data_lock ();
1256 if (!global_module_map)
1257 global_module_map = g_hash_table_new (g_str_hash, g_str_equal);
1258 res = (MonoDl *)g_hash_table_lookup (global_module_map, name);
1260 global_loader_data_unlock ();
1263 res = mono_dl_open (name, flags, err);
1265 g_hash_table_insert (global_module_map, g_strdup (name), res);
1266 global_loader_data_unlock ();
1270 static MonoDl *internal_module;
1273 is_absolute_path (const char *path)
1275 #ifdef PLATFORM_MACOSX
1276 if (!strncmp (path, "@executable_path/", 17) || !strncmp (path, "@loader_path/", 13) ||
1277 !strncmp (path, "@rpath/", 7))
1280 return g_path_is_absolute (path);
1284 mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char **exc_arg)
1286 MonoImage *image = method->klass->image;
1287 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)method;
1288 MonoTableInfo *tables = image->tables;
1289 MonoTableInfo *im = &tables [MONO_TABLE_IMPLMAP];
1290 MonoTableInfo *mr = &tables [MONO_TABLE_MODULEREF];
1291 guint32 im_cols [MONO_IMPLMAP_SIZE];
1292 guint32 scope_token;
1293 const char *import = NULL;
1294 const char *orig_scope;
1295 const char *new_scope;
1297 char *full_name, *file_name, *found_name = NULL;
1299 MonoDl *module = NULL;
1300 gboolean cached = FALSE;
1302 g_assert (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
1310 return piinfo->addr;
1312 if (image_is_dynamic (method->klass->image)) {
1313 MonoReflectionMethodAux *method_aux =
1314 (MonoReflectionMethodAux *)g_hash_table_lookup (
1315 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1319 import = method_aux->dllentry;
1320 orig_scope = method_aux->dll;
1323 if (!piinfo->implmap_idx || piinfo->implmap_idx > im->rows)
1326 mono_metadata_decode_row (im, piinfo->implmap_idx - 1, im_cols, MONO_IMPLMAP_SIZE);
1328 if (!im_cols [MONO_IMPLMAP_SCOPE] || im_cols [MONO_IMPLMAP_SCOPE] > mr->rows)
1331 piinfo->piflags = im_cols [MONO_IMPLMAP_FLAGS];
1332 import = mono_metadata_string_heap (image, im_cols [MONO_IMPLMAP_NAME]);
1333 scope_token = mono_metadata_decode_row_col (mr, im_cols [MONO_IMPLMAP_SCOPE] - 1, MONO_MODULEREF_NAME);
1334 orig_scope = mono_metadata_string_heap (image, scope_token);
1337 mono_dllmap_lookup (image, orig_scope, import, &new_scope, &import);
1340 mono_image_lock (image);
1341 if (!image->pinvoke_scopes) {
1342 image->pinvoke_scopes = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
1343 image->pinvoke_scope_filenames = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1345 module = (MonoDl *)g_hash_table_lookup (image->pinvoke_scopes, new_scope);
1346 found_name = (char *)g_hash_table_lookup (image->pinvoke_scope_filenames, new_scope);
1347 mono_image_unlock (image);
1351 found_name = g_strdup (found_name);
1355 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1356 "DllImport attempting to load: '%s'.", new_scope);
1358 /* we allow a special name to dlopen from the running process namespace */
1359 if (strcmp (new_scope, "__Internal") == 0){
1360 if (internal_module == NULL)
1361 internal_module = mono_dl_open (NULL, MONO_DL_LAZY, &error_msg);
1362 module = internal_module;
1367 * Try loading the module using a variety of names
1369 for (i = 0; i < 5; ++i) {
1370 char *base_name = NULL, *dir_name = NULL;
1371 gboolean is_absolute = is_absolute_path (new_scope);
1375 /* Try the original name */
1376 file_name = g_strdup (new_scope);
1379 /* Try trimming the .dll extension */
1380 if (strstr (new_scope, ".dll") == (new_scope + strlen (new_scope) - 4)) {
1381 file_name = g_strdup (new_scope);
1382 file_name [strlen (new_scope) - 4] = '\0';
1389 dir_name = g_path_get_dirname (new_scope);
1390 base_name = g_path_get_basename (new_scope);
1391 if (strstr (base_name, "lib") != base_name) {
1392 char *tmp = g_strdup_printf ("lib%s", base_name);
1395 file_name = g_strdup_printf ("%s%s%s", dir_name, G_DIR_SEPARATOR_S, base_name);
1398 } else if (strstr (new_scope, "lib") != new_scope) {
1399 file_name = g_strdup_printf ("lib%s", new_scope);
1404 if (!is_absolute && mono_dl_get_system_dir ()) {
1405 dir_name = (char*)mono_dl_get_system_dir ();
1406 file_name = g_path_get_basename (new_scope);
1412 #ifndef TARGET_WIN32
1413 if (!g_ascii_strcasecmp ("user32.dll", new_scope) ||
1414 !g_ascii_strcasecmp ("kernel32.dll", new_scope) ||
1415 !g_ascii_strcasecmp ("user32", new_scope) ||
1416 !g_ascii_strcasecmp ("kernel", new_scope)) {
1417 file_name = g_strdup ("libMonoSupportW.so");
1421 #ifndef TARGET_WIN32
1428 dir_name = g_path_get_dirname (file_name);
1430 base_name = g_path_get_basename (file_name);
1433 if (!module && is_absolute) {
1434 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1436 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1437 "DllImport error loading library '%s': '%s'.",
1438 file_name, error_msg);
1441 found_name = g_strdup (file_name);
1445 if (!module && !is_absolute) {
1449 for (j = 0; j < 3; ++j) {
1454 mdirname = g_path_get_dirname (image->name);
1456 case 1: /* @executable_path@/../lib */
1460 binl = mono_dl_get_executable_path (buf, sizeof (buf));
1462 char *base, *newbase;
1465 resolvedname = mono_path_resolve_symlinks (buf);
1467 base = g_path_get_dirname (resolvedname);
1468 newbase = g_path_get_dirname(base);
1469 mdirname = g_strdup_printf ("%s/lib", newbase);
1471 g_free (resolvedname);
1478 case 2: /* @executable_path@/../Libraries */
1482 binl = mono_dl_get_executable_path (buf, sizeof (buf));
1484 char *base, *newbase;
1487 resolvedname = mono_path_resolve_symlinks (buf);
1489 base = g_path_get_dirname (resolvedname);
1490 newbase = g_path_get_dirname(base);
1491 mdirname = g_strdup_printf ("%s/Libraries", newbase);
1493 g_free (resolvedname);
1505 while ((full_name = mono_dl_build_path (mdirname, file_name, &iter))) {
1506 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1508 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1509 "DllImport error loading library '%s': '%s'.",
1510 full_name, error_msg);
1513 found_name = g_strdup (full_name);
1529 char *file_or_base = is_absolute ? base_name : file_name;
1530 while ((full_name = mono_dl_build_path (dir_name, file_or_base, &iter))) {
1531 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1533 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1534 "DllImport error loading library '%s': '%s'.",
1535 full_name, error_msg);
1538 found_name = g_strdup (full_name);
1547 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1549 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1550 "DllImport error loading library '%s': '%s'.",
1551 file_name, error_msg);
1553 found_name = g_strdup (file_name);
1568 mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_DLLIMPORT,
1569 "DllImport unable to load library '%s'.",
1574 *exc_class = "DllNotFoundException";
1575 *exc_arg = new_scope;
1581 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1582 "DllImport loaded library '%s'.", found_name);
1583 mono_image_lock (image);
1584 if (!g_hash_table_lookup (image->pinvoke_scopes, new_scope)) {
1585 g_hash_table_insert (image->pinvoke_scopes, g_strdup (new_scope), module);
1586 g_hash_table_insert (image->pinvoke_scope_filenames, g_strdup (new_scope), g_strdup (found_name));
1588 mono_image_unlock (image);
1591 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1592 "DllImport searching in: '%s' ('%s').", new_scope, found_name);
1593 g_free (found_name);
1596 if (import && import [0] == '#' && isdigit (import [1])) {
1600 id = strtol (import + 1, &end, 10);
1601 if (id > 0 && *end == '\0')
1605 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1606 "Searching for '%s'.", import);
1608 if (piinfo->piflags & PINVOKE_ATTRIBUTE_NO_MANGLE) {
1609 error_msg = mono_dl_symbol (module, import, &piinfo->addr);
1611 char *mangled_name = NULL, *mangled_name2 = NULL;
1614 int mangle_param_count;
1620 * Search using a variety of mangled names
1622 for (mangle_charset = 0; mangle_charset <= 1; mangle_charset ++) {
1623 for (mangle_stdcall = 0; mangle_stdcall <= 1; mangle_stdcall ++) {
1624 gboolean need_param_count = FALSE;
1626 if (mangle_stdcall > 0)
1627 need_param_count = TRUE;
1629 for (mangle_param_count = 0; mangle_param_count <= (need_param_count ? 256 : 0); mangle_param_count += 4) {
1634 mangled_name = (char*)import;
1635 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CHAR_SET_MASK) {
1636 case PINVOKE_ATTRIBUTE_CHAR_SET_UNICODE:
1637 /* Try the mangled name first */
1638 if (mangle_charset == 0)
1639 mangled_name = g_strconcat (import, "W", NULL);
1641 case PINVOKE_ATTRIBUTE_CHAR_SET_AUTO:
1643 if (mangle_charset == 0)
1644 mangled_name = g_strconcat (import, "W", NULL);
1646 /* Try the mangled name last */
1647 if (mangle_charset == 1)
1648 mangled_name = g_strconcat (import, "A", NULL);
1651 case PINVOKE_ATTRIBUTE_CHAR_SET_ANSI:
1653 /* Try the mangled name last */
1654 if (mangle_charset == 1)
1655 mangled_name = g_strconcat (import, "A", NULL);
1660 if (mangle_param_count == 0)
1661 param_count = mono_method_signature (method)->param_count * sizeof (gpointer);
1663 /* Try brute force, since it would be very hard to compute the stack usage correctly */
1664 param_count = mangle_param_count;
1666 /* Try the stdcall mangled name */
1668 * gcc under windows creates mangled names without the underscore, but MS.NET
1669 * doesn't support it, so we doesn't support it either.
1671 if (mangle_stdcall == 1)
1672 mangled_name2 = g_strdup_printf ("_%s@%d", mangled_name, param_count);
1674 mangled_name2 = mangled_name;
1676 mangled_name2 = mangled_name;
1679 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1680 "Probing '%s'.", mangled_name2);
1682 error_msg = mono_dl_symbol (module, mangled_name2, &piinfo->addr);
1685 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1686 "Found as '%s'.", mangled_name2);
1688 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1689 "Could not find '%s' due to '%s'.", mangled_name2, error_msg);
1694 if (mangled_name != mangled_name2)
1695 g_free (mangled_name2);
1696 if (mangled_name != import)
1697 g_free (mangled_name);
1703 if (!piinfo->addr) {
1706 *exc_class = "EntryPointNotFoundException";
1711 return piinfo->addr;
1715 * LOCKING: assumes the loader lock to be taken.
1718 mono_get_method_from_token (MonoImage *image, guint32 token, MonoClass *klass,
1719 MonoGenericContext *context, gboolean *used_context, MonoError *error)
1722 int table = mono_metadata_token_table (token);
1723 int idx = mono_metadata_token_index (token);
1724 MonoTableInfo *tables = image->tables;
1725 MonoGenericContainer *generic_container = NULL, *container = NULL;
1726 const char *sig = NULL;
1727 guint32 cols [MONO_TYPEDEF_SIZE];
1729 mono_error_init (error);
1731 if (image_is_dynamic (image)) {
1732 MonoClass *handle_class;
1734 result = (MonoMethod *)mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context, error);
1735 mono_error_assert_ok (error);
1736 mono_loader_assert_no_error ();
1738 // This checks the memberref type as well
1739 if (result && handle_class != mono_defaults.methodhandle_class) {
1740 mono_error_set_bad_image (error, image, "Bad method token 0x%08x on dynamic image", token);
1746 if (table != MONO_TABLE_METHOD) {
1747 if (table == MONO_TABLE_METHODSPEC) {
1748 if (used_context) *used_context = TRUE;
1749 return method_from_methodspec (image, context, idx, error);
1751 if (table != MONO_TABLE_MEMBERREF) {
1752 mono_error_set_bad_image (error, image, "Bad method token 0x%08x.", token);
1755 return method_from_memberref (image, idx, context, used_context, error);
1758 if (used_context) *used_context = FALSE;
1760 if (idx > image->tables [MONO_TABLE_METHOD].rows) {
1761 mono_error_set_bad_image (error, image, "Bad method token 0x%08x (out of bounds).", token);
1766 guint32 type = mono_metadata_typedef_from_method (image, token);
1768 mono_error_set_bad_image (error, image, "Bad method token 0x%08x (could not find corresponding typedef).", token);
1771 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | type, error);
1776 mono_metadata_decode_row (&image->tables [MONO_TABLE_METHOD], idx - 1, cols, 6);
1778 if ((cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
1779 (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)) {
1780 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethodPInvoke));
1782 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethod));
1783 methods_size += sizeof (MonoMethod);
1786 mono_stats.method_count ++;
1789 result->klass = klass;
1790 result->flags = cols [2];
1791 result->iflags = cols [1];
1792 result->token = token;
1793 result->name = mono_metadata_string_heap (image, cols [3]);
1795 if (!sig) /* already taken from the methodref */
1796 sig = mono_metadata_blob_heap (image, cols [4]);
1797 /* size = */ mono_metadata_decode_blob_size (sig, &sig);
1799 container = klass->generic_container;
1802 * load_generic_params does a binary search so only call it if the method
1806 generic_container = mono_metadata_load_generic_params (image, token, container);
1807 mono_loader_assert_no_error (); /* FIXME don't swallow this error. */
1809 if (generic_container) {
1810 result->is_generic = TRUE;
1811 generic_container->owner.method = result;
1812 generic_container->is_anonymous = FALSE; // Method is now known, container is no longer anonymous
1813 /*FIXME put this before the image alloc*/
1814 if (!mono_metadata_load_generic_param_constraints_checked (image, token, generic_container, error))
1817 container = generic_container;
1820 if (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
1821 if (result->klass == mono_defaults.string_class && !strcmp (result->name, ".ctor"))
1822 result->string_ctor = 1;
1823 } else if (cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
1824 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)result;
1827 /* IJW is P/Invoke with a predefined function pointer. */
1828 if (image->is_module_handle && (cols [1] & METHOD_IMPL_ATTRIBUTE_NATIVE)) {
1829 piinfo->addr = mono_image_rva_map (image, cols [0]);
1830 g_assert (piinfo->addr);
1833 piinfo->implmap_idx = mono_metadata_implmap_from_method (image, idx - 1);
1834 /* Native methods can have no map. */
1835 if (piinfo->implmap_idx)
1836 piinfo->piflags = mono_metadata_decode_row_col (&tables [MONO_TABLE_IMPLMAP], piinfo->implmap_idx - 1, MONO_IMPLMAP_FLAGS);
1839 if (generic_container)
1840 mono_method_set_generic_container (result, generic_container);
1842 mono_loader_assert_no_error ();
1847 mono_get_method (MonoImage *image, guint32 token, MonoClass *klass)
1850 MonoMethod *result = mono_get_method_checked (image, token, klass, NULL, &error);
1851 mono_error_cleanup (&error);
1856 mono_get_method_full (MonoImage *image, guint32 token, MonoClass *klass,
1857 MonoGenericContext *context)
1860 MonoMethod *result = mono_get_method_checked (image, token, klass, context, &error);
1861 mono_error_cleanup (&error);
1866 mono_get_method_checked (MonoImage *image, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
1868 MonoMethod *result = NULL;
1869 gboolean used_context = FALSE;
1871 /* We do everything inside the lock to prevent creation races */
1873 mono_error_init (error);
1875 mono_image_lock (image);
1877 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD) {
1878 if (!image->method_cache)
1879 image->method_cache = g_hash_table_new (NULL, NULL);
1880 result = (MonoMethod *)g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
1881 } else if (!image_is_dynamic (image)) {
1882 if (!image->methodref_cache)
1883 image->methodref_cache = g_hash_table_new (NULL, NULL);
1884 result = (MonoMethod *)g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1886 mono_image_unlock (image);
1892 result = mono_get_method_from_token (image, token, klass, context, &used_context, error);
1896 mono_image_lock (image);
1897 if (!used_context && !result->is_inflated) {
1898 MonoMethod *result2 = NULL;
1900 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1901 result2 = (MonoMethod *)g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
1902 else if (!image_is_dynamic (image))
1903 result2 = (MonoMethod *)g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1906 mono_image_unlock (image);
1910 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1911 g_hash_table_insert (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)), result);
1912 else if (!image_is_dynamic (image))
1913 g_hash_table_insert (image->methodref_cache, GINT_TO_POINTER (token), result);
1916 mono_image_unlock (image);
1922 get_method_constrained (MonoImage *image, MonoMethod *method, MonoClass *constrained_class, MonoGenericContext *context, MonoError *error)
1925 MonoClass *ic = NULL;
1926 MonoGenericContext *method_context = NULL;
1927 MonoMethodSignature *sig, *original_sig;
1929 mono_error_init (error);
1931 mono_class_init (constrained_class);
1932 original_sig = sig = mono_method_signature_checked (method, error);
1937 if (method->is_inflated && sig->generic_param_count) {
1938 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
1939 sig = mono_method_signature_checked (imethod->declaring, error); /*We assume that if the inflated method signature is valid, the declaring method is too*/
1942 method_context = mono_method_get_context (method);
1946 * We must inflate the signature with the class instantiation to work on
1947 * cases where a class inherit from a generic type and the override replaces
1948 * any type argument which a concrete type. See #325283.
1950 if (method_context->class_inst) {
1951 MonoGenericContext ctx;
1952 ctx.method_inst = NULL;
1953 ctx.class_inst = method_context->class_inst;
1954 /*Fixme, property propagate this error*/
1955 sig = inflate_generic_signature_checked (method->klass->image, sig, &ctx, error);
1961 if ((constrained_class != method->klass) && (MONO_CLASS_IS_INTERFACE (method->klass)))
1964 result = find_method (constrained_class, ic, method->name, sig, constrained_class, error);
1965 if (sig != original_sig)
1966 mono_metadata_free_inflated_signature (sig);
1971 if (method_context) {
1972 result = mono_class_inflate_generic_method_checked (result, method_context, error);
1981 mono_get_method_constrained_with_method (MonoImage *image, MonoMethod *method, MonoClass *constrained_class,
1982 MonoGenericContext *context, MonoError *error)
1986 return get_method_constrained (image, method, constrained_class, context, error);
1990 * mono_get_method_constrained:
1992 * This is used when JITing the `constrained.' opcode.
1994 * This returns two values: the contrained method, which has been inflated
1995 * as the function return value; And the original CIL-stream method as
1996 * declared in cil_method. The later is used for verification.
1999 mono_get_method_constrained (MonoImage *image, guint32 token, MonoClass *constrained_class,
2000 MonoGenericContext *context, MonoMethod **cil_method)
2003 MonoMethod *result = mono_get_method_constrained_checked (image, token, constrained_class, context, cil_method, &error);
2004 mono_error_cleanup (&error);
2009 mono_get_method_constrained_checked (MonoImage *image, guint32 token, MonoClass *constrained_class, MonoGenericContext *context, MonoMethod **cil_method, MonoError *error)
2011 mono_error_init (error);
2013 *cil_method = mono_get_method_from_token (image, token, NULL, context, NULL, error);
2017 return get_method_constrained (image, *cil_method, constrained_class, context, error);
2021 mono_free_method (MonoMethod *method)
2023 if (mono_profiler_get_events () & MONO_PROFILE_METHOD_EVENTS)
2024 mono_profiler_method_free (method);
2026 /* FIXME: This hack will go away when the profiler will support freeing methods */
2027 if (mono_profiler_get_events () != MONO_PROFILE_NONE)
2030 if (method->signature) {
2032 * FIXME: This causes crashes because the types inside signatures and
2033 * locals are shared.
2035 /* mono_metadata_free_method_signature (method->signature); */
2036 /* g_free (method->signature); */
2039 if (method_is_dynamic (method)) {
2040 MonoMethodWrapper *mw = (MonoMethodWrapper*)method;
2043 mono_marshal_free_dynamic_wrappers (method);
2045 mono_image_property_remove (method->klass->image, method);
2047 g_free ((char*)method->name);
2049 g_free ((char*)mw->header->code);
2050 for (i = 0; i < mw->header->num_locals; ++i)
2051 g_free (mw->header->locals [i]);
2052 g_free (mw->header->clauses);
2053 g_free (mw->header);
2055 g_free (mw->method_data);
2056 g_free (method->signature);
2062 mono_method_get_param_names (MonoMethod *method, const char **names)
2066 MonoTableInfo *methodt;
2067 MonoTableInfo *paramt;
2068 MonoMethodSignature *signature;
2071 if (method->is_inflated)
2072 method = ((MonoMethodInflated *) method)->declaring;
2074 signature = mono_method_signature (method);
2075 /*FIXME this check is somewhat redundant since the caller usally will have to get the signature to figure out the
2076 number of arguments and allocate a properly sized array. */
2077 if (signature == NULL)
2080 if (!signature->param_count)
2083 for (i = 0; i < signature->param_count; ++i)
2086 klass = method->klass;
2090 mono_class_init (klass);
2092 if (image_is_dynamic (klass->image)) {
2093 MonoReflectionMethodAux *method_aux =
2094 (MonoReflectionMethodAux *)g_hash_table_lookup (
2095 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2096 if (method_aux && method_aux->param_names) {
2097 for (i = 0; i < mono_method_signature (method)->param_count; ++i)
2098 if (method_aux->param_names [i + 1])
2099 names [i] = method_aux->param_names [i + 1];
2104 if (method->wrapper_type) {
2105 char **pnames = NULL;
2107 mono_image_lock (klass->image);
2108 if (klass->image->wrapper_param_names)
2109 pnames = (char **)g_hash_table_lookup (klass->image->wrapper_param_names, method);
2110 mono_image_unlock (klass->image);
2113 for (i = 0; i < signature->param_count; ++i)
2114 names [i] = pnames [i];
2119 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2120 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2121 idx = mono_method_get_index (method);
2123 guint32 cols [MONO_PARAM_SIZE];
2126 param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2128 if (idx < methodt->rows)
2129 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2131 lastp = paramt->rows + 1;
2132 for (i = param_index; i < lastp; ++i) {
2133 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2134 if (cols [MONO_PARAM_SEQUENCE] && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) /* skip return param spec and bounds check*/
2135 names [cols [MONO_PARAM_SEQUENCE] - 1] = mono_metadata_string_heap (klass->image, cols [MONO_PARAM_NAME]);
2141 mono_method_get_param_token (MonoMethod *method, int index)
2143 MonoClass *klass = method->klass;
2144 MonoTableInfo *methodt;
2147 mono_class_init (klass);
2149 if (image_is_dynamic (klass->image))
2150 g_assert_not_reached ();
2152 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2153 idx = mono_method_get_index (method);
2155 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2159 return mono_metadata_make_token (MONO_TABLE_PARAM, 0);
2161 return mono_metadata_make_token (MONO_TABLE_PARAM, param_index + index);
2168 mono_method_get_marshal_info (MonoMethod *method, MonoMarshalSpec **mspecs)
2171 MonoClass *klass = method->klass;
2172 MonoTableInfo *methodt;
2173 MonoTableInfo *paramt;
2174 MonoMethodSignature *signature;
2177 signature = mono_method_signature (method);
2178 g_assert (signature); /*FIXME there is no way to signal error from this function*/
2180 for (i = 0; i < signature->param_count + 1; ++i)
2183 if (image_is_dynamic (method->klass->image)) {
2184 MonoReflectionMethodAux *method_aux =
2185 (MonoReflectionMethodAux *)g_hash_table_lookup (
2186 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2187 if (method_aux && method_aux->param_marshall) {
2188 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
2189 for (i = 0; i < signature->param_count + 1; ++i)
2190 if (dyn_specs [i]) {
2191 mspecs [i] = g_new0 (MonoMarshalSpec, 1);
2192 memcpy (mspecs [i], dyn_specs [i], sizeof (MonoMarshalSpec));
2193 mspecs [i]->data.custom_data.custom_name = g_strdup (dyn_specs [i]->data.custom_data.custom_name);
2194 mspecs [i]->data.custom_data.cookie = g_strdup (dyn_specs [i]->data.custom_data.cookie);
2200 mono_class_init (klass);
2202 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2203 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2204 idx = mono_method_get_index (method);
2206 guint32 cols [MONO_PARAM_SIZE];
2207 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2209 if (idx < methodt->rows)
2210 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2212 lastp = paramt->rows + 1;
2214 for (i = param_index; i < lastp; ++i) {
2215 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2217 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) {
2219 tp = mono_metadata_get_marshal_info (klass->image, i - 1, FALSE);
2221 mspecs [cols [MONO_PARAM_SEQUENCE]]= mono_metadata_parse_marshal_spec (klass->image, tp);
2230 mono_method_has_marshal_info (MonoMethod *method)
2233 MonoClass *klass = method->klass;
2234 MonoTableInfo *methodt;
2235 MonoTableInfo *paramt;
2238 if (image_is_dynamic (method->klass->image)) {
2239 MonoReflectionMethodAux *method_aux =
2240 (MonoReflectionMethodAux *)g_hash_table_lookup (
2241 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2242 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
2244 for (i = 0; i < mono_method_signature (method)->param_count + 1; ++i)
2251 mono_class_init (klass);
2253 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2254 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2255 idx = mono_method_get_index (method);
2257 guint32 cols [MONO_PARAM_SIZE];
2258 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2260 if (idx + 1 < methodt->rows)
2261 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2263 lastp = paramt->rows + 1;
2265 for (i = param_index; i < lastp; ++i) {
2266 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2268 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL)
2277 mono_method_get_wrapper_data (MonoMethod *method, guint32 id)
2280 g_assert (method != NULL);
2281 g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
2283 if (method->is_inflated)
2284 method = ((MonoMethodInflated *) method)->declaring;
2285 data = (void **)((MonoMethodWrapper *)method)->method_data;
2286 g_assert (data != NULL);
2287 g_assert (id <= GPOINTER_TO_UINT (*data));
2294 } StackWalkUserData;
2297 stack_walk_adapter (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
2299 StackWalkUserData *d = (StackWalkUserData *)data;
2301 switch (frame->type) {
2302 case FRAME_TYPE_DEBUGGER_INVOKE:
2303 case FRAME_TYPE_MANAGED_TO_NATIVE:
2304 case FRAME_TYPE_TRAMPOLINE:
2306 case FRAME_TYPE_MANAGED:
2307 g_assert (frame->ji);
2308 return d->func (frame->actual_method, frame->native_offset, frame->il_offset, frame->managed, d->user_data);
2311 g_assert_not_reached ();
2317 mono_stack_walk (MonoStackWalk func, gpointer user_data)
2319 StackWalkUserData ud = { func, user_data };
2320 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (stack_walk_adapter, NULL, MONO_UNWIND_LOOKUP_ALL, &ud);
2324 mono_stack_walk_no_il (MonoStackWalk func, gpointer user_data)
2326 StackWalkUserData ud = { func, user_data };
2327 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (stack_walk_adapter, NULL, MONO_UNWIND_DEFAULT, &ud);
2331 MonoStackWalkAsyncSafe func;
2333 } AsyncStackWalkUserData;
2337 async_stack_walk_adapter (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
2339 AsyncStackWalkUserData *d = (AsyncStackWalkUserData *)data;
2341 switch (frame->type) {
2342 case FRAME_TYPE_DEBUGGER_INVOKE:
2343 case FRAME_TYPE_MANAGED_TO_NATIVE:
2344 case FRAME_TYPE_TRAMPOLINE:
2346 case FRAME_TYPE_MANAGED:
2349 if (frame->ji->async) {
2350 return d->func (NULL, frame->domain, frame->ji->code_start, frame->native_offset, d->user_data);
2352 return d->func (frame->actual_method, frame->domain, frame->ji->code_start, frame->native_offset, d->user_data);
2356 g_assert_not_reached ();
2363 * mono_stack_walk_async_safe:
2365 * Async safe version callable from signal handlers.
2368 mono_stack_walk_async_safe (MonoStackWalkAsyncSafe func, void *initial_sig_context, void *user_data)
2371 AsyncStackWalkUserData ud = { func, user_data };
2373 mono_sigctx_to_monoctx (initial_sig_context, &ctx);
2374 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (async_stack_walk_adapter, NULL, MONO_UNWIND_SIGNAL_SAFE, &ud);
2378 last_managed (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
2380 MonoMethod **dest = (MonoMethod **)data;
2382 /*g_print ("In %s::%s [%d] [%d]\n", m->klass->name, m->name, no, ilo);*/
2388 mono_method_get_last_managed (void)
2390 MonoMethod *m = NULL;
2391 mono_stack_walk_no_il (last_managed, &m);
2395 static gboolean loader_lock_track_ownership = FALSE;
2400 * See docs/thread-safety.txt for the locking strategy.
2403 mono_loader_lock (void)
2405 mono_locks_coop_acquire (&loader_mutex, LoaderLock);
2406 if (G_UNLIKELY (loader_lock_track_ownership)) {
2407 mono_native_tls_set_value (loader_lock_nest_id, GUINT_TO_POINTER (GPOINTER_TO_UINT (mono_native_tls_get_value (loader_lock_nest_id)) + 1));
2412 mono_loader_unlock (void)
2414 mono_locks_coop_release (&loader_mutex, LoaderLock);
2415 if (G_UNLIKELY (loader_lock_track_ownership)) {
2416 mono_native_tls_set_value (loader_lock_nest_id, GUINT_TO_POINTER (GPOINTER_TO_UINT (mono_native_tls_get_value (loader_lock_nest_id)) - 1));
2421 * mono_loader_lock_track_ownership:
2423 * Set whenever the runtime should track ownership of the loader lock. If set to TRUE,
2424 * the mono_loader_lock_is_owned_by_self () can be called to query whenever the current
2425 * thread owns the loader lock.
2428 mono_loader_lock_track_ownership (gboolean track)
2430 loader_lock_track_ownership = track;
2434 * mono_loader_lock_is_owned_by_self:
2436 * Return whenever the current thread owns the loader lock.
2437 * This is useful to avoid blocking operations while holding the loader lock.
2440 mono_loader_lock_is_owned_by_self (void)
2442 g_assert (loader_lock_track_ownership);
2444 return GPOINTER_TO_UINT (mono_native_tls_get_value (loader_lock_nest_id)) > 0;
2448 * mono_loader_lock_if_inited:
2450 * Acquire the loader lock if it has been initialized, no-op otherwise. This can
2451 * be used in runtime initialization code which can be executed before mono_loader_init ().
2454 mono_loader_lock_if_inited (void)
2456 if (loader_lock_inited)
2457 mono_loader_lock ();
2461 mono_loader_unlock_if_inited (void)
2463 if (loader_lock_inited)
2464 mono_loader_unlock ();
2468 * mono_method_signature:
2470 * Return the signature of the method M. On failure, returns NULL, and ERR is set.
2472 MonoMethodSignature*
2473 mono_method_signature_checked (MonoMethod *m, MonoError *error)
2478 gboolean can_cache_signature;
2479 MonoGenericContainer *container;
2480 MonoMethodSignature *signature = NULL, *sig2;
2483 /* We need memory barriers below because of the double-checked locking pattern */
2485 mono_error_init (error);
2488 return m->signature;
2490 img = m->klass->image;
2492 if (m->is_inflated) {
2493 MonoMethodInflated *imethod = (MonoMethodInflated *) m;
2494 /* the lock is recursive */
2495 signature = mono_method_signature (imethod->declaring);
2496 signature = inflate_generic_signature_checked (imethod->declaring->klass->image, signature, mono_method_get_context (m), error);
2497 if (!mono_error_ok (error))
2500 inflated_signatures_size += mono_metadata_signature_size (signature);
2502 mono_image_lock (img);
2504 mono_memory_barrier ();
2506 m->signature = signature;
2508 mono_image_unlock (img);
2510 return m->signature;
2513 g_assert (mono_metadata_token_table (m->token) == MONO_TABLE_METHOD);
2514 idx = mono_metadata_token_index (m->token);
2516 sig = mono_metadata_blob_heap (img, sig_offset = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_SIGNATURE));
2518 g_assert (!m->klass->generic_class);
2519 container = mono_method_get_generic_container (m);
2521 container = m->klass->generic_container;
2523 /* Generic signatures depend on the container so they cannot be cached */
2524 /* icall/pinvoke signatures cannot be cached cause we modify them below */
2525 can_cache_signature = !(m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && !(m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) && !container;
2527 /* If the method has parameter attributes, that can modify the signature */
2528 if (mono_metadata_method_has_param_attrs (img, idx))
2529 can_cache_signature = FALSE;
2531 if (can_cache_signature) {
2532 mono_image_lock (img);
2533 signature = (MonoMethodSignature *)g_hash_table_lookup (img->method_signatures, sig);
2534 mono_image_unlock (img);
2538 const char *sig_body;
2539 /*TODO we should cache the failure result somewhere*/
2540 if (!mono_verifier_verify_method_signature (img, sig_offset, error))
2543 /* size = */ mono_metadata_decode_blob_size (sig, &sig_body);
2545 signature = mono_metadata_parse_method_signature_full (img, container, idx, sig_body, NULL, error);
2549 if (can_cache_signature) {
2550 mono_image_lock (img);
2551 sig2 = (MonoMethodSignature *)g_hash_table_lookup (img->method_signatures, sig);
2553 g_hash_table_insert (img->method_signatures, (gpointer)sig, signature);
2554 mono_image_unlock (img);
2557 signatures_size += mono_metadata_signature_size (signature);
2560 /* Verify metadata consistency */
2561 if (signature->generic_param_count) {
2562 if (!container || !container->is_method) {
2563 mono_error_set_method_load (error, m->klass, m->name, "Signature claims method has generic parameters, but generic_params table says it doesn't for method 0x%08x from image %s", idx, img->name);
2566 if (container->type_argc != signature->generic_param_count) {
2567 mono_error_set_method_load (error, m->klass, m->name, "Inconsistent generic parameter count. Signature says %d, generic_params table says %d for method 0x%08x from image %s", signature->generic_param_count, container->type_argc, idx, img->name);
2570 } else if (container && container->is_method && container->type_argc) {
2571 mono_error_set_method_load (error, m->klass, m->name, "generic_params table claims method has generic parameters, but signature says it doesn't for method 0x%08x from image %s", idx, img->name);
2574 if (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
2575 signature->pinvoke = 1;
2576 else if (m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
2577 MonoCallConvention conv = (MonoCallConvention)0;
2578 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)m;
2579 signature->pinvoke = 1;
2581 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CALL_CONV_MASK) {
2582 case 0: /* no call conv, so using default */
2583 case PINVOKE_ATTRIBUTE_CALL_CONV_WINAPI:
2584 conv = MONO_CALL_DEFAULT;
2586 case PINVOKE_ATTRIBUTE_CALL_CONV_CDECL:
2589 case PINVOKE_ATTRIBUTE_CALL_CONV_STDCALL:
2590 conv = MONO_CALL_STDCALL;
2592 case PINVOKE_ATTRIBUTE_CALL_CONV_THISCALL:
2593 conv = MONO_CALL_THISCALL;
2595 case PINVOKE_ATTRIBUTE_CALL_CONV_FASTCALL:
2596 conv = MONO_CALL_FASTCALL;
2598 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERIC:
2599 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERICINST:
2601 mono_error_set_method_load (error, m->klass, m->name, "unsupported calling convention : 0x%04x for method 0x%08x from image %s", piinfo->piflags, idx, img->name);
2604 signature->call_convention = conv;
2607 mono_image_lock (img);
2609 mono_memory_barrier ();
2611 m->signature = signature;
2613 mono_image_unlock (img);
2615 return m->signature;
2619 * mono_method_signature:
2621 * Return the signature of the method M. On failure, returns NULL.
2623 MonoMethodSignature*
2624 mono_method_signature (MonoMethod *m)
2627 MonoMethodSignature *sig;
2629 sig = mono_method_signature_checked (m, &error);
2631 char *type_name = mono_type_get_full_name (m->klass);
2632 g_warning ("Could not load signature of %s:%s due to: %s", type_name, m->name, mono_error_get_message (&error));
2634 mono_error_cleanup (&error);
2641 mono_method_get_name (MonoMethod *method)
2643 return method->name;
2647 mono_method_get_class (MonoMethod *method)
2649 return method->klass;
2653 mono_method_get_token (MonoMethod *method)
2655 return method->token;
2659 mono_method_get_header_checked (MonoMethod *method, MonoError *error)
2665 MonoGenericContainer *container;
2667 mono_error_init (error);
2668 img = method->klass->image;
2670 if ((method->flags & METHOD_ATTRIBUTE_ABSTRACT) || (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) || (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) || (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
2671 mono_error_set_bad_image (error, img, "Method has no body");
2675 if (method->is_inflated) {
2676 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
2677 MonoMethodHeader *header, *iheader;
2679 header = mono_method_get_header_checked (imethod->declaring, error);
2683 iheader = inflate_generic_header (header, mono_method_get_context (method), error);
2684 mono_metadata_free_mh (header);
2692 if (method->wrapper_type != MONO_WRAPPER_NONE || method->sre_method) {
2693 MonoMethodWrapper *mw = (MonoMethodWrapper *)method;
2694 g_assert (mw->header);
2699 * We don't need locks here: the new header is allocated from malloc memory
2700 * and is not stored anywhere in the runtime, the user needs to free it.
2702 g_assert (mono_metadata_token_table (method->token) == MONO_TABLE_METHOD);
2703 idx = mono_metadata_token_index (method->token);
2704 rva = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_RVA);
2706 if (!mono_verifier_verify_method_header (img, rva, NULL)) {
2707 mono_error_set_bad_image (error, img, "Invalid method header, failed verification");
2711 loc = mono_image_rva_map (img, rva);
2713 mono_error_set_bad_image (error, img, "Method has zero rva");
2718 * When parsing the types of local variables, we must pass any container available
2719 * to ensure that both VAR and MVAR will get the right owner.
2721 container = mono_method_get_generic_container (method);
2723 container = method->klass->generic_container;
2724 return mono_metadata_parse_mh_full (img, container, (const char *)loc, error);
2728 mono_method_get_header (MonoMethod *method)
2731 MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
2732 mono_error_cleanup (&error);
2738 mono_method_get_flags (MonoMethod *method, guint32 *iflags)
2741 *iflags = method->iflags;
2742 return method->flags;
2746 * Find the method index in the metadata methodDef table.
2749 mono_method_get_index (MonoMethod *method)
2751 MonoClass *klass = method->klass;
2755 /* constructed array methods are not in the MethodDef table */
2759 return mono_metadata_token_index (method->token);
2761 mono_class_setup_methods (klass);
2762 if (mono_class_has_failure (klass))
2764 for (i = 0; i < klass->method.count; ++i) {
2765 if (method == klass->methods [i]) {
2766 if (klass->image->uncompressed_metadata)
2767 return mono_metadata_translate_token_index (klass->image, MONO_TABLE_METHOD, klass->method.first + i + 1);
2769 return klass->method.first + i + 1;