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)
12 * This file is used by the interpreter and the JIT engine to locate
13 * assemblies. Used to load AssemblyRef and later to resolve various
17 * This should keep track of the assembly versions that we are loading.
25 #include <mono/metadata/metadata.h>
26 #include <mono/metadata/image.h>
27 #include <mono/metadata/assembly.h>
28 #include <mono/metadata/tokentype.h>
29 #include <mono/metadata/tabledefs.h>
30 #include <mono/metadata/metadata-internals.h>
31 #include <mono/metadata/loader.h>
32 #include <mono/metadata/class-internals.h>
33 #include <mono/metadata/debug-helpers.h>
34 #include <mono/metadata/reflection.h>
35 #include <mono/metadata/profiler.h>
36 #include <mono/metadata/profiler-private.h>
37 #include <mono/metadata/exception.h>
38 #include <mono/metadata/marshal.h>
39 #include <mono/metadata/lock-tracer.h>
40 #include <mono/metadata/verify-internals.h>
41 #include <mono/utils/mono-logger.h>
42 #include <mono/utils/mono-dl.h>
43 #include <mono/utils/mono-membar.h>
44 #include <mono/utils/mono-counters.h>
46 MonoDefaults mono_defaults;
49 * This lock protects the hash tables inside MonoImage used by the metadata
50 * loading functions in class.c and loader.c.
52 * See domain-internals.h for locking policy in combination with the
55 static CRITICAL_SECTION loader_mutex;
58 static guint32 inflated_signatures_size;
59 static guint32 memberref_sig_cache_size;
62 * This TLS variable contains the last type load error encountered by the loader.
64 guint32 loader_error_thread_id;
67 * This TLS variable holds how many times the current thread has acquired the loader
70 guint32 loader_lock_nest_id;
75 static gboolean inited;
78 InitializeCriticalSection (&loader_mutex);
80 loader_error_thread_id = TlsAlloc ();
81 loader_lock_nest_id = TlsAlloc ();
83 mono_counters_register ("Inflated signatures size",
84 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_signatures_size);
85 mono_counters_register ("Memberref signature cache size",
86 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &memberref_sig_cache_size);
93 mono_loader_cleanup (void)
95 TlsFree (loader_error_thread_id);
96 TlsFree (loader_lock_nest_id);
98 /*DeleteCriticalSection (&loader_mutex);*/
102 * Handling of type load errors should be done as follows:
104 * If something could not be loaded, the loader should call one of the
105 * mono_loader_set_error_XXX functions ()
106 * with the appropriate arguments, then return NULL to report the failure. The error
107 * should be propagated until it reaches code which can throw managed exceptions. At that
108 * point, an exception should be thrown based on the information returned by
109 * mono_loader_get_last_error (). Then the error should be cleared by calling
110 * mono_loader_clear_error ().
114 set_loader_error (MonoLoaderError *error)
116 TlsSetValue (loader_error_thread_id, error);
120 * mono_loader_set_error_assembly_load:
122 * Set the loader error for this thread.
125 mono_loader_set_error_assembly_load (const char *assembly_name, gboolean ref_only)
127 MonoLoaderError *error;
129 if (mono_loader_get_last_error ())
132 error = g_new0 (MonoLoaderError, 1);
133 error->exception_type = MONO_EXCEPTION_FILE_NOT_FOUND;
134 error->assembly_name = g_strdup (assembly_name);
135 error->ref_only = ref_only;
138 * This is not strictly needed, but some (most) of the loader code still
139 * can't deal with load errors, and this message is more helpful than an
143 g_warning ("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.", assembly_name);
145 g_warning ("Could not load file or assembly '%s' or one of its dependencies.", assembly_name);
147 set_loader_error (error);
151 * mono_loader_set_error_type_load:
153 * Set the loader error for this thread.
156 mono_loader_set_error_type_load (const char *class_name, const char *assembly_name)
158 MonoLoaderError *error;
160 if (mono_loader_get_last_error ())
163 error = g_new0 (MonoLoaderError, 1);
164 error->exception_type = MONO_EXCEPTION_TYPE_LOAD;
165 error->class_name = g_strdup (class_name);
166 error->assembly_name = g_strdup (assembly_name);
169 * This is not strictly needed, but some (most) of the loader code still
170 * can't deal with load errors, and this message is more helpful than an
173 g_warning ("The class %s could not be loaded, used in %s", class_name, assembly_name);
175 set_loader_error (error);
179 * mono_loader_set_error_method_load:
181 * Set the loader error for this thread. MEMBER_NAME should point to a string
185 mono_loader_set_error_method_load (const char *class_name, const char *member_name)
187 MonoLoaderError *error;
189 /* FIXME: Store the signature as well */
190 if (mono_loader_get_last_error ())
193 error = g_new0 (MonoLoaderError, 1);
194 error->exception_type = MONO_EXCEPTION_MISSING_METHOD;
195 error->class_name = g_strdup (class_name);
196 error->member_name = member_name;
198 set_loader_error (error);
202 * mono_loader_set_error_field_load:
204 * Set the loader error for this thread. MEMBER_NAME should point to a string
208 mono_loader_set_error_field_load (MonoClass *klass, const char *member_name)
210 MonoLoaderError *error;
212 /* FIXME: Store the signature as well */
213 if (mono_loader_get_last_error ())
216 error = g_new0 (MonoLoaderError, 1);
217 error->exception_type = MONO_EXCEPTION_MISSING_FIELD;
218 error->klass = klass;
219 error->member_name = member_name;
221 set_loader_error (error);
225 * mono_loader_set_error_bad_image:
227 * Set the loader error for this thread.
230 mono_loader_set_error_bad_image (char *msg)
232 MonoLoaderError *error;
234 if (mono_loader_get_last_error ())
237 error = g_new0 (MonoLoaderError, 1);
238 error->exception_type = MONO_EXCEPTION_BAD_IMAGE;
241 set_loader_error (error);
246 * mono_loader_get_last_error:
248 * Returns information about the last type load exception encountered by the loader, or
249 * NULL. After use, the exception should be cleared by calling mono_loader_clear_error.
252 mono_loader_get_last_error (void)
254 return (MonoLoaderError*)TlsGetValue (loader_error_thread_id);
258 * mono_loader_clear_error:
260 * Disposes any loader error messages on this thread
263 mono_loader_clear_error (void)
265 MonoLoaderError *ex = (MonoLoaderError*)TlsGetValue (loader_error_thread_id);
268 g_free (ex->class_name);
269 g_free (ex->assembly_name);
273 TlsSetValue (loader_error_thread_id, NULL);
278 * mono_loader_error_prepare_exception:
279 * @error: The MonoLoaderError to turn into an exception
281 * This turns a MonoLoaderError into an exception that can be thrown
282 * and resets the Mono Loader Error state during this process.
286 mono_loader_error_prepare_exception (MonoLoaderError *error)
288 MonoException *ex = NULL;
290 switch (error->exception_type) {
291 case MONO_EXCEPTION_TYPE_LOAD: {
292 char *cname = g_strdup (error->class_name);
293 char *aname = g_strdup (error->assembly_name);
294 MonoString *class_name;
296 mono_loader_clear_error ();
298 class_name = mono_string_new (mono_domain_get (), cname);
300 ex = mono_get_exception_type_load (class_name, aname);
305 case MONO_EXCEPTION_MISSING_METHOD: {
306 char *cname = g_strdup (error->class_name);
307 char *aname = g_strdup (error->member_name);
309 mono_loader_clear_error ();
310 ex = mono_get_exception_missing_method (cname, aname);
316 case MONO_EXCEPTION_MISSING_FIELD: {
317 char *cnspace = g_strdup ((error->klass && *error->klass->name_space) ? error->klass->name_space : "");
318 char *cname = g_strdup (error->klass ? error->klass->name : "");
319 char *cmembername = g_strdup (error->member_name);
322 mono_loader_clear_error ();
323 class_name = g_strdup_printf ("%s%s%s", cnspace, cnspace ? "." : "", cname);
325 ex = mono_get_exception_missing_field (class_name, cmembername);
328 g_free (cmembername);
333 case MONO_EXCEPTION_FILE_NOT_FOUND: {
338 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);
340 msg = g_strdup_printf ("Could not load file or assembly '%s' or one of its dependencies.", error->assembly_name);
341 filename = g_strdup (error->assembly_name);
342 /* Has to call this before calling anything which might call mono_class_init () */
343 mono_loader_clear_error ();
344 ex = mono_get_exception_file_not_found2 (msg, mono_string_new (mono_domain_get (), filename));
350 case MONO_EXCEPTION_BAD_IMAGE: {
351 char *msg = g_strdup (error->msg);
352 mono_loader_clear_error ();
353 ex = mono_get_exception_bad_image_format (msg);
359 g_assert_not_reached ();
366 * find_cached_memberref_sig:
368 * Return a cached copy of the memberref signature identified by SIG_IDX.
369 * We use a gpointer since the cache stores both MonoTypes and MonoMethodSignatures.
370 * A cache is needed since the type/signature parsing routines allocate everything
371 * from a mempool, so without a cache, multiple requests for the same signature would
372 * lead to unbounded memory growth. For normal methods/fields this is not a problem
373 * since the resulting methods/fields are cached, but inflated methods/fields cannot
375 * LOCKING: Acquires the loader lock.
378 find_cached_memberref_sig (MonoImage *image, guint32 sig_idx)
383 res = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (sig_idx));
384 mono_loader_unlock ();
390 cache_memberref_sig (MonoImage *image, guint32 sig_idx, gpointer sig)
395 prev_sig = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (sig_idx));
397 /* Somebody got in before us */
401 g_hash_table_insert (image->memberref_signatures, GUINT_TO_POINTER (sig_idx), sig);
402 /* An approximation based on glib 2.18 */
403 memberref_sig_cache_size += sizeof (gpointer) * 4;
406 mono_loader_unlock ();
411 static MonoClassField*
412 field_from_memberref (MonoImage *image, guint32 token, MonoClass **retklass,
413 MonoGenericContext *context)
416 MonoClassField *field;
417 MonoTableInfo *tables = image->tables;
420 guint32 nindex, class;
423 guint32 idx = mono_metadata_token_index (token);
425 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
426 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
427 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
429 fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
431 if (!mono_verifier_verify_memberref_signature (image, cols [MONO_MEMBERREF_SIGNATURE], NULL)) {
432 mono_loader_set_error_bad_image (g_strdup_printf ("Bad field signature class token 0x%08x field name %s token 0x%08x on image %s", class, fname, token, image->name));
436 ptr = mono_metadata_blob_heap (image, cols [MONO_MEMBERREF_SIGNATURE]);
437 mono_metadata_decode_blob_size (ptr, &ptr);
438 /* we may want to check the signature here... */
441 g_warning ("Bad field signature class token %08x field name %s token %08x", class, fname, token);
442 mono_loader_set_error_field_load (NULL, fname);
445 /* FIXME: This needs a cache, especially for generic instances, since
446 * mono_metadata_parse_type () allocates everything from a mempool.
448 sig_type = find_cached_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE]);
450 sig_type = mono_metadata_parse_type (image, MONO_PARSE_TYPE, 0, ptr, &ptr);
451 if (sig_type == NULL) {
452 mono_loader_set_error_field_load (NULL, fname);
455 sig_type = cache_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE], sig_type);
459 case MONO_MEMBERREF_PARENT_TYPEDEF:
460 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | nindex);
462 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_DEF | nindex);
463 g_warning ("Missing field %s in class %s (typedef index %d)", fname, name, nindex);
464 mono_loader_set_error_type_load (name, image->assembly_name);
468 mono_class_init (klass);
471 field = mono_class_get_field_from_name_full (klass, fname, sig_type);
473 case MONO_MEMBERREF_PARENT_TYPEREF:
474 klass = mono_class_from_typeref (image, MONO_TOKEN_TYPE_REF | nindex);
476 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_REF | nindex);
477 g_warning ("missing field %s in class %s (typeref index %d)", fname, name, nindex);
478 mono_loader_set_error_type_load (name, image->assembly_name);
482 mono_class_init (klass);
485 field = mono_class_get_field_from_name_full (klass, fname, sig_type);
487 case MONO_MEMBERREF_PARENT_TYPESPEC: {
488 klass = mono_class_get_full (image, MONO_TOKEN_TYPE_SPEC | nindex, context);
490 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_REF | nindex);
491 g_warning ("missing field %s in class %s (typeref index %d)", fname, name, nindex);
492 mono_loader_set_error_type_load (name, image->assembly_name);
496 mono_class_init (klass); /*FIXME is this really necessary?*/
499 field = mono_class_get_field_from_name_full (klass, fname, sig_type);
503 g_warning ("field load from %x", class);
508 mono_loader_set_error_field_load (klass, fname);
514 mono_field_from_token (MonoImage *image, guint32 token, MonoClass **retklass,
515 MonoGenericContext *context)
519 MonoClassField *field;
521 if (image->dynamic) {
522 MonoClassField *result;
523 MonoClass *handle_class;
526 result = mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context);
527 // This checks the memberref type as well
528 if (!result || handle_class != mono_defaults.fieldhandle_class) {
529 mono_loader_set_error_bad_image (g_strdup_printf ("Bad field token 0x%08x on image %s.", token, image->name));
532 *retklass = result->parent;
537 if ((field = g_hash_table_lookup (image->field_cache, GUINT_TO_POINTER (token)))) {
538 *retklass = field->parent;
539 mono_loader_unlock ();
542 mono_loader_unlock ();
544 if (mono_metadata_token_table (token) == MONO_TABLE_MEMBERREF)
545 field = field_from_memberref (image, token, retklass, context);
547 type = mono_metadata_typedef_from_field (image, mono_metadata_token_index (token));
550 k = mono_class_get (image, MONO_TOKEN_TYPE_DEF | type);
556 field = mono_class_get_field (k, token);
560 if (field && field->parent && !field->parent->generic_class && !field->parent->generic_container)
561 g_hash_table_insert (image->field_cache, GUINT_TO_POINTER (token), field);
562 mono_loader_unlock ();
567 mono_metadata_signature_vararg_match (MonoMethodSignature *sig1, MonoMethodSignature *sig2)
571 if (sig1->hasthis != sig2->hasthis ||
572 sig1->sentinelpos != sig2->sentinelpos)
575 for (i = 0; i < sig1->sentinelpos; i++) {
576 MonoType *p1 = sig1->params[i];
577 MonoType *p2 = sig2->params[i];
579 /*if (p1->attrs != p2->attrs)
582 if (!mono_metadata_type_equal (p1, p2))
586 if (!mono_metadata_type_equal (sig1->ret, sig2->ret))
592 find_method_in_class (MonoClass *klass, const char *name, const char *qname, const char *fqname,
593 MonoMethodSignature *sig, MonoClass *from_class)
597 /* Search directly in the metadata to avoid calling setup_methods () */
599 /* FIXME: !from_class->generic_class condition causes test failures. */
600 if (klass->type_token && !klass->image->dynamic && !klass->methods && !klass->rank && klass == from_class && !from_class->generic_class) {
601 for (i = 0; i < klass->method.count; ++i) {
602 guint32 cols [MONO_METHOD_SIZE];
606 mono_metadata_decode_table_row (klass->image, MONO_TABLE_METHOD, klass->method.first + i, cols, MONO_METHOD_SIZE);
608 m_name = mono_metadata_string_heap (klass->image, cols [MONO_METHOD_NAME]);
610 if (!((fqname && !strcmp (m_name, fqname)) ||
611 (qname && !strcmp (m_name, qname)) ||
612 (name && !strcmp (m_name, name))))
615 method = mono_get_method (klass->image, MONO_TOKEN_METHOD_DEF | (klass->method.first + i + 1), klass);
616 if (method && (sig->call_convention != MONO_CALL_VARARG) && mono_metadata_signature_equal (sig, mono_method_signature (method)))
621 mono_class_setup_methods (klass);
622 for (i = 0; i < klass->method.count; ++i) {
623 MonoMethod *m = klass->methods [i];
625 if (!((fqname && !strcmp (m->name, fqname)) ||
626 (qname && !strcmp (m->name, qname)) ||
627 (name && !strcmp (m->name, name))))
630 if (sig->call_convention == MONO_CALL_VARARG) {
631 if (mono_metadata_signature_vararg_match (sig, mono_method_signature (m)))
634 if (mono_metadata_signature_equal (sig, mono_method_signature (m)))
639 if (i < klass->method.count)
640 return mono_class_get_method_by_index (from_class, i);
645 find_method (MonoClass *in_class, MonoClass *ic, const char* name, MonoMethodSignature *sig, MonoClass *from_class)
648 char *qname, *fqname, *class_name;
649 gboolean is_interface;
650 MonoMethod *result = NULL;
652 is_interface = MONO_CLASS_IS_INTERFACE (in_class);
655 class_name = mono_type_get_name_full (&ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
657 qname = g_strconcat (class_name, ".", name, NULL);
658 if (ic->name_space && ic->name_space [0])
659 fqname = g_strconcat (ic->name_space, ".", class_name, ".", name, NULL);
663 class_name = qname = fqname = NULL;
666 g_assert (from_class);
667 result = find_method_in_class (in_class, name, qname, fqname, sig, from_class);
671 if (name [0] == '.' && (!strcmp (name, ".ctor") || !strcmp (name, ".cctor")))
674 g_assert (from_class->interface_offsets_count == in_class->interface_offsets_count);
675 for (i = 0; i < in_class->interface_offsets_count; i++) {
676 MonoClass *in_ic = in_class->interfaces_packed [i];
677 MonoClass *from_ic = from_class->interfaces_packed [i];
678 char *ic_qname, *ic_fqname, *ic_class_name;
680 ic_class_name = mono_type_get_name_full (&in_ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
681 ic_qname = g_strconcat (ic_class_name, ".", name, NULL);
682 if (in_ic->name_space && in_ic->name_space [0])
683 ic_fqname = g_strconcat (in_ic->name_space, ".", ic_class_name, ".", name, NULL);
687 result = find_method_in_class (in_ic, ic ? name : NULL, ic_qname, ic_fqname, sig, from_ic);
688 g_free (ic_class_name);
695 in_class = in_class->parent;
696 from_class = from_class->parent;
698 g_assert (!in_class == !from_class);
701 result = find_method_in_class (mono_defaults.object_class, name, qname, fqname, sig, mono_defaults.object_class);
710 static MonoMethodSignature*
711 inflate_generic_signature (MonoImage *image, MonoMethodSignature *sig, MonoGenericContext *context)
713 MonoMethodSignature *res;
720 res = g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + ((gint32)sig->param_count) * sizeof (MonoType*));
721 res->param_count = sig->param_count;
722 res->sentinelpos = -1;
723 res->ret = mono_class_inflate_generic_type (sig->ret, context);
724 is_open = mono_class_is_open_constructed_type (res->ret);
725 for (i = 0; i < sig->param_count; ++i) {
726 res->params [i] = mono_class_inflate_generic_type (sig->params [i], context);
728 is_open = mono_class_is_open_constructed_type (res->params [i]);
730 res->hasthis = sig->hasthis;
731 res->explicit_this = sig->explicit_this;
732 res->call_convention = sig->call_convention;
733 res->pinvoke = sig->pinvoke;
734 res->generic_param_count = sig->generic_param_count;
735 res->sentinelpos = sig->sentinelpos;
736 res->has_type_parameters = is_open;
737 res->is_inflated = 1;
741 static MonoMethodHeader*
742 inflate_generic_header (MonoMethodHeader *header, MonoGenericContext *context)
744 MonoMethodHeader *res;
746 res = g_malloc0 (MONO_SIZEOF_METHOD_HEADER + sizeof (gpointer) * header->num_locals);
747 res->code = header->code;
748 res->code_size = header->code_size;
749 res->max_stack = header->max_stack;
750 res->num_clauses = header->num_clauses;
751 res->init_locals = header->init_locals;
752 res->num_locals = header->num_locals;
753 res->clauses = header->clauses;
754 for (i = 0; i < header->num_locals; ++i)
755 res->locals [i] = mono_class_inflate_generic_type (header->locals [i], context);
756 if (res->num_clauses) {
757 res->clauses = g_memdup (header->clauses, sizeof (MonoExceptionClause) * res->num_clauses);
758 for (i = 0; i < header->num_clauses; ++i) {
759 MonoExceptionClause *clause = &res->clauses [i];
760 if (clause->flags != MONO_EXCEPTION_CLAUSE_NONE)
762 clause->data.catch_class = mono_class_inflate_generic_class (clause->data.catch_class, context);
769 * token is the method_ref/def/spec token used in a call IL instruction.
772 mono_method_get_signature_full (MonoMethod *method, MonoImage *image, guint32 token, MonoGenericContext *context)
774 int table = mono_metadata_token_table (token);
775 int idx = mono_metadata_token_index (token);
777 guint32 cols [MONO_MEMBERREF_SIZE];
778 MonoMethodSignature *sig;
781 /* !table is for wrappers: we should really assign their own token to them */
782 if (!table || table == MONO_TABLE_METHOD)
783 return mono_method_signature (method);
785 if (table == MONO_TABLE_METHODSPEC) {
786 g_assert (!(method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) &&
787 mono_method_signature (method));
788 g_assert (method->is_inflated);
790 return mono_method_signature (method);
793 if (method->klass->generic_class)
794 return mono_method_signature (method);
797 /* FIXME: This might be incorrect for vararg methods */
798 return mono_method_signature (method);
800 mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
801 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
803 sig = find_cached_memberref_sig (image, sig_idx);
805 if (!mono_verifier_verify_memberref_signature (image, sig_idx, NULL)) {
806 guint32 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
807 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
809 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method signature class token 0x%08x field name %s token 0x%08x on image %s", class, fname, token, image->name));
813 ptr = mono_metadata_blob_heap (image, sig_idx);
814 mono_metadata_decode_blob_size (ptr, &ptr);
815 sig = mono_metadata_parse_method_signature (image, 0, ptr, NULL);
818 sig = cache_memberref_sig (image, sig_idx, sig);
822 MonoMethodSignature *cached;
824 /* This signature is not owned by a MonoMethod, so need to cache */
825 sig = inflate_generic_signature (image, sig, context);
826 cached = mono_metadata_get_inflated_signature (sig, context);
828 mono_metadata_free_inflated_signature (sig);
830 inflated_signatures_size += mono_metadata_signature_size (cached);
838 mono_method_get_signature (MonoMethod *method, MonoImage *image, guint32 token)
840 return mono_method_get_signature_full (method, image, token, NULL);
843 /* this is only for the typespec array methods */
845 mono_method_search_in_array_class (MonoClass *klass, const char *name, MonoMethodSignature *sig)
849 mono_class_setup_methods (klass);
851 for (i = 0; i < klass->method.count; ++i) {
852 MonoMethod *method = klass->methods [i];
853 if (strcmp (method->name, name) == 0 && sig->param_count == method->signature->param_count)
860 method_from_memberref (MonoImage *image, guint32 idx, MonoGenericContext *typespec_context,
861 gboolean *used_context)
863 MonoClass *klass = NULL;
864 MonoMethod *method = NULL;
865 MonoTableInfo *tables = image->tables;
867 guint32 nindex, class, sig_idx;
869 MonoMethodSignature *sig;
872 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, 3);
873 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
874 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
875 /*g_print ("methodref: 0x%x 0x%x %s\n", class, nindex,
876 mono_metadata_string_heap (m, cols [MONO_MEMBERREF_NAME]));*/
878 mname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
881 * Whether we actually used the `typespec_context' or not.
882 * This is used to tell our caller whether or not it's safe to insert the returned
883 * method into a cache.
886 *used_context = class == MONO_MEMBERREF_PARENT_TYPESPEC;
889 case MONO_MEMBERREF_PARENT_TYPEREF:
890 klass = mono_class_from_typeref (image, MONO_TOKEN_TYPE_REF | nindex);
892 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_REF | nindex);
893 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
894 mono_loader_set_error_type_load (name, image->assembly_name);
899 case MONO_MEMBERREF_PARENT_TYPESPEC:
901 * Parse the TYPESPEC in the parent's context.
903 klass = mono_class_get_full (image, MONO_TOKEN_TYPE_SPEC | nindex, typespec_context);
905 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_SPEC | nindex);
906 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
907 mono_loader_set_error_type_load (name, image->assembly_name);
912 case MONO_MEMBERREF_PARENT_TYPEDEF:
913 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | nindex);
915 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_DEF | nindex);
916 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
917 mono_loader_set_error_type_load (name, image->assembly_name);
922 case MONO_MEMBERREF_PARENT_METHODDEF:
923 return mono_get_method (image, MONO_TOKEN_METHOD_DEF | nindex, NULL);
927 /* This message leaks */
928 char *message = g_strdup_printf ("Memberref parent unknown: class: %d, index %d", class, nindex);
929 mono_loader_set_error_method_load ("", message);
935 mono_class_init (klass);
937 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
939 if (!mono_verifier_verify_memberref_signature (image, sig_idx, NULL)) {
940 mono_loader_set_error_method_load (klass->name, mname);
944 ptr = mono_metadata_blob_heap (image, sig_idx);
945 mono_metadata_decode_blob_size (ptr, &ptr);
947 sig = find_cached_memberref_sig (image, sig_idx);
949 sig = mono_metadata_parse_method_signature (image, 0, ptr, NULL);
953 sig = cache_memberref_sig (image, sig_idx, sig);
957 case MONO_MEMBERREF_PARENT_TYPEREF:
958 case MONO_MEMBERREF_PARENT_TYPEDEF:
959 method = find_method (klass, NULL, mname, sig, klass);
962 case MONO_MEMBERREF_PARENT_TYPESPEC: {
965 type = &klass->byval_arg;
967 if (type->type != MONO_TYPE_ARRAY && type->type != MONO_TYPE_SZARRAY) {
968 MonoClass *in_class = klass->generic_class ? klass->generic_class->container_class : klass;
969 method = find_method (in_class, NULL, mname, sig, klass);
973 /* we're an array and we created these methods already in klass in mono_class_init () */
974 method = mono_method_search_in_array_class (klass, mname, sig);
978 g_error ("Memberref parent unknown: class: %d, index %d", class, nindex);
979 g_assert_not_reached ();
983 char *msig = mono_signature_get_desc (sig, FALSE);
984 char * class_name = mono_type_get_name (&klass->byval_arg);
985 GString *s = g_string_new (mname);
986 if (sig->generic_param_count)
987 g_string_append_printf (s, "<[%d]>", sig->generic_param_count);
988 g_string_append_printf (s, "(%s)", msig);
990 msig = g_string_free (s, FALSE);
993 "Missing method %s::%s in assembly %s, referenced in assembly %s",
994 class_name, msig, klass->image->name, image->name);
995 mono_loader_set_error_method_load (class_name, mname);
1004 method_from_methodspec (MonoImage *image, MonoGenericContext *context, guint32 idx)
1008 MonoTableInfo *tables = image->tables;
1009 MonoGenericContext new_context;
1010 MonoGenericInst *inst;
1012 guint32 cols [MONO_METHODSPEC_SIZE];
1013 guint32 token, nindex, param_count;
1015 mono_metadata_decode_row (&tables [MONO_TABLE_METHODSPEC], idx - 1, cols, MONO_METHODSPEC_SIZE);
1016 token = cols [MONO_METHODSPEC_METHOD];
1017 nindex = token >> MONO_METHODDEFORREF_BITS;
1019 if (!mono_verifier_verify_methodspec_signature (image, cols [MONO_METHODSPEC_SIGNATURE], NULL))
1022 ptr = mono_metadata_blob_heap (image, cols [MONO_METHODSPEC_SIGNATURE]);
1024 mono_metadata_decode_value (ptr, &ptr);
1026 param_count = mono_metadata_decode_value (ptr, &ptr);
1027 g_assert (param_count);
1029 inst = mono_metadata_parse_generic_inst (image, NULL, param_count, ptr, &ptr);
1030 if (context && inst->is_open)
1031 inst = mono_metadata_inflate_generic_inst (inst, context);
1033 if ((token & MONO_METHODDEFORREF_MASK) == MONO_METHODDEFORREF_METHODDEF)
1034 method = mono_get_method_full (image, MONO_TOKEN_METHOD_DEF | nindex, NULL, context);
1036 method = method_from_memberref (image, nindex, context, NULL);
1041 klass = method->klass;
1043 if (klass->generic_class) {
1044 g_assert (method->is_inflated);
1045 method = ((MonoMethodInflated *) method)->declaring;
1048 new_context.class_inst = klass->generic_class ? klass->generic_class->context.class_inst : NULL;
1049 new_context.method_inst = inst;
1051 return mono_class_inflate_generic_method_full (method, klass, &new_context);
1054 struct _MonoDllMap {
1062 static MonoDllMap *global_dll_map;
1065 mono_dllmap_lookup_list (MonoDllMap *dll_map, const char *dll, const char* func, const char **rdll, const char **rfunc) {
1073 mono_loader_lock ();
1076 * we use the first entry we find that matches, since entries from
1077 * the config file are prepended to the list and we document that the
1078 * later entries win.
1080 for (; dll_map; dll_map = dll_map->next) {
1081 if (dll_map->dll [0] == 'i' && dll_map->dll [1] == ':') {
1082 if (g_ascii_strcasecmp (dll_map->dll + 2, dll))
1084 } else if (strcmp (dll_map->dll, dll)) {
1087 if (!found && dll_map->target) {
1088 *rdll = dll_map->target;
1090 /* we don't quit here, because we could find a full
1091 * entry that matches also function and that has priority.
1094 if (dll_map->func && strcmp (dll_map->func, func) == 0) {
1095 *rfunc = dll_map->target_func;
1100 mono_loader_unlock ();
1105 mono_dllmap_lookup (MonoImage *assembly, const char *dll, const char* func, const char **rdll, const char **rfunc)
1108 if (assembly && assembly->dll_map) {
1109 res = mono_dllmap_lookup_list (assembly->dll_map, dll, func, rdll, rfunc);
1113 return mono_dllmap_lookup_list (global_dll_map, dll, func, rdll, rfunc);
1117 * mono_dllmap_insert:
1119 * LOCKING: Acquires the loader lock.
1121 * NOTE: This can be called before the runtime is initialized, for example from
1122 * mono_config_parse ().
1125 mono_dllmap_insert (MonoImage *assembly, const char *dll, const char *func, const char *tdll, const char *tfunc)
1129 mono_loader_init ();
1131 mono_loader_lock ();
1134 entry = g_malloc0 (sizeof (MonoDllMap));
1135 entry->dll = dll? g_strdup (dll): NULL;
1136 entry->target = tdll? g_strdup (tdll): NULL;
1137 entry->func = func? g_strdup (func): NULL;
1138 entry->target_func = tfunc? g_strdup (tfunc): NULL;
1139 entry->next = global_dll_map;
1140 global_dll_map = entry;
1142 entry = mono_image_alloc0 (assembly, sizeof (MonoDllMap));
1143 entry->dll = dll? mono_image_strdup (assembly, dll): NULL;
1144 entry->target = tdll? mono_image_strdup (assembly, tdll): NULL;
1145 entry->func = func? mono_image_strdup (assembly, func): NULL;
1146 entry->target_func = tfunc? mono_image_strdup (assembly, tfunc): NULL;
1147 entry->next = assembly->dll_map;
1148 assembly->dll_map = entry;
1151 mono_loader_unlock ();
1154 static GHashTable *global_module_map;
1157 cached_module_load (const char *name, int flags, char **err)
1160 mono_loader_lock ();
1161 if (!global_module_map)
1162 global_module_map = g_hash_table_new (g_str_hash, g_str_equal);
1163 res = g_hash_table_lookup (global_module_map, name);
1166 mono_loader_unlock ();
1169 res = mono_dl_open (name, flags, err);
1171 g_hash_table_insert (global_module_map, g_strdup (name), res);
1172 mono_loader_unlock ();
1177 mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char **exc_arg)
1179 MonoImage *image = method->klass->image;
1180 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)method;
1181 MonoTableInfo *tables = image->tables;
1182 MonoTableInfo *im = &tables [MONO_TABLE_IMPLMAP];
1183 MonoTableInfo *mr = &tables [MONO_TABLE_MODULEREF];
1184 guint32 im_cols [MONO_IMPLMAP_SIZE];
1185 guint32 scope_token;
1186 const char *import = NULL;
1187 const char *orig_scope;
1188 const char *new_scope;
1190 char *full_name, *file_name;
1192 MonoDl *module = NULL;
1194 g_assert (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
1197 return piinfo->addr;
1199 if (method->klass->image->dynamic) {
1200 MonoReflectionMethodAux *method_aux =
1201 g_hash_table_lookup (
1202 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1206 import = method_aux->dllentry;
1207 orig_scope = method_aux->dll;
1210 if (!piinfo->implmap_idx)
1213 mono_metadata_decode_row (im, piinfo->implmap_idx - 1, im_cols, MONO_IMPLMAP_SIZE);
1215 piinfo->piflags = im_cols [MONO_IMPLMAP_FLAGS];
1216 import = mono_metadata_string_heap (image, im_cols [MONO_IMPLMAP_NAME]);
1217 scope_token = mono_metadata_decode_row_col (mr, im_cols [MONO_IMPLMAP_SCOPE] - 1, MONO_MODULEREF_NAME);
1218 orig_scope = mono_metadata_string_heap (image, scope_token);
1221 mono_dllmap_lookup (image, orig_scope, import, &new_scope, &import);
1223 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1224 "DllImport attempting to load: '%s'.", new_scope);
1231 /* we allow a special name to dlopen from the running process namespace */
1232 if (strcmp (new_scope, "__Internal") == 0)
1233 module = mono_dl_open (NULL, MONO_DL_LAZY, &error_msg);
1236 * Try loading the module using a variety of names
1238 for (i = 0; i < 4; ++i) {
1241 /* Try the original name */
1242 file_name = g_strdup (new_scope);
1245 /* Try trimming the .dll extension */
1246 if (strstr (new_scope, ".dll") == (new_scope + strlen (new_scope) - 4)) {
1247 file_name = g_strdup (new_scope);
1248 file_name [strlen (new_scope) - 4] = '\0';
1254 if (strstr (new_scope, "lib") != new_scope) {
1255 file_name = g_strdup_printf ("lib%s", new_scope);
1261 #ifndef TARGET_WIN32
1262 if (!g_ascii_strcasecmp ("user32.dll", new_scope) ||
1263 !g_ascii_strcasecmp ("kernel32.dll", new_scope) ||
1264 !g_ascii_strcasecmp ("user32", new_scope) ||
1265 !g_ascii_strcasecmp ("kernel", new_scope)) {
1266 file_name = g_strdup ("libMonoSupportW.so");
1270 #ifndef TARGET_WIN32
1277 while ((full_name = mono_dl_build_path (NULL, file_name, &iter))) {
1278 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1279 "DllImport loading location: '%s'.", full_name);
1280 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1282 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1283 "DllImport error loading library: '%s'.",
1295 while ((full_name = mono_dl_build_path (".", file_name, &iter))) {
1296 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1297 "DllImport loading library: '%s'.", full_name);
1298 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1300 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1301 "DllImport error loading library '%s'.",
1312 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1313 "DllImport loading: '%s'.", file_name);
1314 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1316 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1317 "DllImport error loading library '%s'.",
1329 mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_DLLIMPORT,
1330 "DllImport unable to load library '%s'.",
1335 *exc_class = "DllNotFoundException";
1336 *exc_arg = new_scope;
1341 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1342 "Searching for '%s'.", import);
1344 if (piinfo->piflags & PINVOKE_ATTRIBUTE_NO_MANGLE) {
1345 error_msg = mono_dl_symbol (module, import, &piinfo->addr);
1347 char *mangled_name = NULL, *mangled_name2 = NULL;
1350 int mangle_param_count;
1356 * Search using a variety of mangled names
1358 for (mangle_charset = 0; mangle_charset <= 1; mangle_charset ++) {
1359 for (mangle_stdcall = 0; mangle_stdcall <= 1; mangle_stdcall ++) {
1360 gboolean need_param_count = FALSE;
1362 if (mangle_stdcall > 0)
1363 need_param_count = TRUE;
1365 for (mangle_param_count = 0; mangle_param_count <= (need_param_count ? 256 : 0); mangle_param_count += 4) {
1370 mangled_name = (char*)import;
1371 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CHAR_SET_MASK) {
1372 case PINVOKE_ATTRIBUTE_CHAR_SET_UNICODE:
1373 /* Try the mangled name first */
1374 if (mangle_charset == 0)
1375 mangled_name = g_strconcat (import, "W", NULL);
1377 case PINVOKE_ATTRIBUTE_CHAR_SET_AUTO:
1379 if (mangle_charset == 0)
1380 mangled_name = g_strconcat (import, "W", NULL);
1382 /* Try the mangled name last */
1383 if (mangle_charset == 1)
1384 mangled_name = g_strconcat (import, "A", NULL);
1387 case PINVOKE_ATTRIBUTE_CHAR_SET_ANSI:
1389 /* Try the mangled name last */
1390 if (mangle_charset == 1)
1391 mangled_name = g_strconcat (import, "A", NULL);
1396 if (mangle_param_count == 0)
1397 param_count = mono_method_signature (method)->param_count * sizeof (gpointer);
1399 /* Try brute force, since it would be very hard to compute the stack usage correctly */
1400 param_count = mangle_param_count;
1402 /* Try the stdcall mangled name */
1404 * gcc under windows creates mangled names without the underscore, but MS.NET
1405 * doesn't support it, so we doesn't support it either.
1407 if (mangle_stdcall == 1)
1408 mangled_name2 = g_strdup_printf ("_%s@%d", mangled_name, param_count);
1410 mangled_name2 = mangled_name;
1412 mangled_name2 = mangled_name;
1415 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1416 "Probing '%s'.", mangled_name2);
1418 error_msg = mono_dl_symbol (module, mangled_name2, &piinfo->addr);
1421 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1422 "Found as '%s'.", mangled_name2);
1424 if (mangled_name != mangled_name2)
1425 g_free (mangled_name2);
1426 if (mangled_name != import)
1427 g_free (mangled_name);
1433 if (!piinfo->addr) {
1436 *exc_class = "EntryPointNotFoundException";
1441 return piinfo->addr;
1445 * LOCKING: assumes the loader lock to be taken.
1448 mono_get_method_from_token (MonoImage *image, guint32 token, MonoClass *klass,
1449 MonoGenericContext *context, gboolean *used_context)
1452 int table = mono_metadata_token_table (token);
1453 int idx = mono_metadata_token_index (token);
1454 MonoTableInfo *tables = image->tables;
1455 MonoGenericContainer *generic_container = NULL, *container = NULL;
1456 const char *sig = NULL;
1458 guint32 cols [MONO_TYPEDEF_SIZE];
1460 if (image->dynamic) {
1461 MonoClass *handle_class;
1463 result = mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context);
1464 // This checks the memberref type as well
1465 if (result && handle_class != mono_defaults.methodhandle_class) {
1466 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1472 if (table != MONO_TABLE_METHOD) {
1473 if (table == MONO_TABLE_METHODSPEC) {
1474 if (used_context) *used_context = TRUE;
1475 return method_from_methodspec (image, context, idx);
1477 if (table != MONO_TABLE_MEMBERREF) {
1478 g_warning ("got wrong token: 0x%08x\n", token);
1479 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1482 return method_from_memberref (image, idx, context, used_context);
1485 if (used_context) *used_context = FALSE;
1487 if (idx > image->tables [MONO_TABLE_METHOD].rows) {
1488 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1492 mono_metadata_decode_row (&image->tables [MONO_TABLE_METHOD], idx - 1, cols, 6);
1494 if ((cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
1495 (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL))
1496 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethodPInvoke));
1498 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethodNormal));
1500 mono_stats.method_count ++;
1502 if (!klass) { /*FIXME put this before the image alloc*/
1503 guint32 type = mono_metadata_typedef_from_method (image, token);
1504 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | type);
1510 result->klass = klass;
1511 result->flags = cols [2];
1512 result->iflags = cols [1];
1513 result->token = token;
1514 result->name = mono_metadata_string_heap (image, cols [3]);
1516 if (!sig) /* already taken from the methodref */
1517 sig = mono_metadata_blob_heap (image, cols [4]);
1518 size = mono_metadata_decode_blob_size (sig, &sig);
1520 container = klass->generic_container;
1523 * load_generic_params does a binary search so only call it if the method
1527 generic_container = mono_metadata_load_generic_params (image, token, container);
1528 if (generic_container) {
1529 result->is_generic = TRUE;
1530 generic_container->owner.method = result;
1531 /*FIXME put this before the image alloc*/
1532 if (!mono_metadata_load_generic_param_constraints_full (image, token, generic_container))
1535 container = generic_container;
1538 if (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
1539 if (result->klass == mono_defaults.string_class && !strcmp (result->name, ".ctor"))
1540 result->string_ctor = 1;
1541 } else if (cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
1542 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)result;
1545 /* IJW is P/Invoke with a predefined function pointer. */
1546 if (image->is_module_handle && (cols [1] & METHOD_IMPL_ATTRIBUTE_NATIVE)) {
1547 piinfo->addr = mono_image_rva_map (image, cols [0]);
1548 g_assert (piinfo->addr);
1551 piinfo->implmap_idx = mono_metadata_implmap_from_method (image, idx - 1);
1552 /* Native methods can have no map. */
1553 if (piinfo->implmap_idx)
1554 piinfo->piflags = mono_metadata_decode_row_col (&tables [MONO_TABLE_IMPLMAP], piinfo->implmap_idx - 1, MONO_IMPLMAP_FLAGS);
1557 if (generic_container)
1558 mono_method_set_generic_container (result, generic_container);
1564 mono_get_method (MonoImage *image, guint32 token, MonoClass *klass)
1566 return mono_get_method_full (image, token, klass, NULL);
1570 get_method_token (gpointer value)
1572 MonoMethod *m = (MonoMethod*)value;
1574 return GUINT_TO_POINTER (m->token);
1578 mono_get_method_full (MonoImage *image, guint32 token, MonoClass *klass,
1579 MonoGenericContext *context)
1582 gboolean used_context = FALSE;
1584 /* We do everything inside the lock to prevent creation races */
1586 mono_image_lock (image);
1588 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD) {
1589 if (!image->method_cache)
1590 image->method_cache = mono_value_hash_table_new (NULL, NULL, get_method_token);
1591 result = mono_value_hash_table_lookup (image->method_cache, GINT_TO_POINTER (token));
1593 if (!image->methodref_cache)
1594 image->methodref_cache = g_hash_table_new (NULL, NULL);
1595 result = g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1597 mono_image_unlock (image);
1602 result = mono_get_method_from_token (image, token, klass, context, &used_context);
1606 mono_image_lock (image);
1607 if (!used_context && !result->is_inflated) {
1608 MonoMethod *result2;
1609 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1610 result2 = mono_value_hash_table_lookup (image->method_cache, GINT_TO_POINTER (token));
1612 result2 = g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1615 mono_image_unlock (image);
1619 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1620 mono_value_hash_table_insert (image->method_cache, GINT_TO_POINTER (token), result);
1622 g_hash_table_insert (image->methodref_cache, GINT_TO_POINTER (token), result);
1625 mono_image_unlock (image);
1631 * mono_get_method_constrained:
1633 * This is used when JITing the `constrained.' opcode.
1635 * This returns two values: the contrained method, which has been inflated
1636 * as the function return value; And the original CIL-stream method as
1637 * declared in cil_method. The later is used for verification.
1640 mono_get_method_constrained (MonoImage *image, guint32 token, MonoClass *constrained_class,
1641 MonoGenericContext *context, MonoMethod **cil_method)
1643 MonoMethod *method, *result;
1644 MonoClass *ic = NULL;
1645 MonoGenericContext *method_context = NULL;
1646 MonoMethodSignature *sig, *original_sig;
1648 mono_loader_lock ();
1650 *cil_method = mono_get_method_from_token (image, token, NULL, context, NULL);
1652 mono_loader_unlock ();
1656 mono_class_init (constrained_class);
1657 method = *cil_method;
1658 original_sig = sig = mono_method_signature (method);
1662 if (method->is_inflated && sig->generic_param_count) {
1663 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
1664 sig = mono_method_signature (imethod->declaring); /*We assume that if the inflated method signature is valid, the declaring method is too*/
1665 method_context = mono_method_get_context (method);
1669 * We must inflate the signature with the class instantiation to work on
1670 * cases where a class inherit from a generic type and the override replaces
1671 * any type argument which a concrete type. See #325283.
1673 if (method_context->class_inst) {
1674 MonoGenericContext ctx;
1675 ctx.method_inst = NULL;
1676 ctx.class_inst = method_context->class_inst;
1678 sig = inflate_generic_signature (method->klass->image, sig, &ctx);
1684 if ((constrained_class != method->klass) && (MONO_CLASS_IS_INTERFACE (method->klass)))
1687 result = find_method (constrained_class, ic, method->name, sig, constrained_class);
1688 if (sig != original_sig)
1689 mono_metadata_free_inflated_signature (sig);
1692 g_warning ("Missing method %s.%s.%s in assembly %s token %x", method->klass->name_space,
1693 method->klass->name, method->name, image->name, token);
1694 mono_loader_unlock ();
1699 result = mono_class_inflate_generic_method (result, method_context);
1701 mono_loader_unlock ();
1706 mono_free_method (MonoMethod *method)
1708 if (mono_profiler_get_events () & MONO_PROFILE_METHOD_EVENTS)
1709 mono_profiler_method_free (method);
1711 /* FIXME: This hack will go away when the profiler will support freeing methods */
1712 if (mono_profiler_get_events () != MONO_PROFILE_NONE)
1715 if (method->signature) {
1717 * FIXME: This causes crashes because the types inside signatures and
1718 * locals are shared.
1720 /* mono_metadata_free_method_signature (method->signature); */
1721 /* g_free (method->signature); */
1724 if (method->dynamic) {
1725 MonoMethodWrapper *mw = (MonoMethodWrapper*)method;
1728 mono_marshal_free_dynamic_wrappers (method);
1730 mono_image_property_remove (method->klass->image, method);
1732 g_free ((char*)method->name);
1733 if (mw->method.header) {
1734 g_free ((char*)mw->method.header->code);
1735 for (i = 0; i < mw->method.header->num_locals; ++i)
1736 g_free (mw->method.header->locals [i]);
1737 g_free (mw->method.header->clauses);
1738 g_free (mw->method.header);
1740 g_free (mw->method_data);
1741 g_free (method->signature);
1747 mono_method_get_param_names (MonoMethod *method, const char **names)
1751 MonoTableInfo *methodt;
1752 MonoTableInfo *paramt;
1753 MonoMethodSignature *signature;
1756 if (method->is_inflated)
1757 method = ((MonoMethodInflated *) method)->declaring;
1759 signature = mono_method_signature (method);
1760 /*FIXME this check is somewhat redundant since the caller usally will have to get the signature to figure out the
1761 number of arguments and allocate a properly sized array. */
1762 if (signature == NULL)
1765 if (!signature->param_count)
1768 for (i = 0; i < signature->param_count; ++i)
1771 klass = method->klass;
1775 mono_class_init (klass);
1777 if (klass->image->dynamic) {
1778 MonoReflectionMethodAux *method_aux =
1779 g_hash_table_lookup (
1780 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1781 if (method_aux && method_aux->param_names) {
1782 for (i = 0; i < mono_method_signature (method)->param_count; ++i)
1783 if (method_aux->param_names [i + 1])
1784 names [i] = method_aux->param_names [i + 1];
1789 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1790 paramt = &klass->image->tables [MONO_TABLE_PARAM];
1791 idx = mono_method_get_index (method);
1793 guint32 cols [MONO_PARAM_SIZE];
1796 param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1798 if (idx < methodt->rows)
1799 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
1801 lastp = paramt->rows + 1;
1802 for (i = param_index; i < lastp; ++i) {
1803 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
1804 if (cols [MONO_PARAM_SEQUENCE] && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) /* skip return param spec and bounds check*/
1805 names [cols [MONO_PARAM_SEQUENCE] - 1] = mono_metadata_string_heap (klass->image, cols [MONO_PARAM_NAME]);
1811 mono_method_get_param_token (MonoMethod *method, int index)
1813 MonoClass *klass = method->klass;
1814 MonoTableInfo *methodt;
1817 mono_class_init (klass);
1819 if (klass->image->dynamic) {
1820 g_assert_not_reached ();
1823 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1824 idx = mono_method_get_index (method);
1826 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1830 return mono_metadata_make_token (MONO_TABLE_PARAM, 0);
1832 return mono_metadata_make_token (MONO_TABLE_PARAM, param_index + index);
1839 mono_method_get_marshal_info (MonoMethod *method, MonoMarshalSpec **mspecs)
1842 MonoClass *klass = method->klass;
1843 MonoTableInfo *methodt;
1844 MonoTableInfo *paramt;
1845 MonoMethodSignature *signature;
1848 signature = mono_method_signature (method);
1849 g_assert (signature); /*FIXME there is no way to signal error from this function*/
1851 for (i = 0; i < signature->param_count + 1; ++i)
1854 if (method->klass->image->dynamic) {
1855 MonoReflectionMethodAux *method_aux =
1856 g_hash_table_lookup (
1857 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1858 if (method_aux && method_aux->param_marshall) {
1859 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
1860 for (i = 0; i < signature->param_count + 1; ++i)
1861 if (dyn_specs [i]) {
1862 mspecs [i] = g_new0 (MonoMarshalSpec, 1);
1863 memcpy (mspecs [i], dyn_specs [i], sizeof (MonoMarshalSpec));
1869 mono_class_init (klass);
1871 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1872 paramt = &klass->image->tables [MONO_TABLE_PARAM];
1873 idx = mono_method_get_index (method);
1875 guint32 cols [MONO_PARAM_SIZE];
1876 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1878 if (idx < methodt->rows)
1879 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
1881 lastp = paramt->rows + 1;
1883 for (i = param_index; i < lastp; ++i) {
1884 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
1886 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) {
1888 tp = mono_metadata_get_marshal_info (klass->image, i - 1, FALSE);
1890 mspecs [cols [MONO_PARAM_SEQUENCE]]= mono_metadata_parse_marshal_spec (klass->image, tp);
1899 mono_method_has_marshal_info (MonoMethod *method)
1902 MonoClass *klass = method->klass;
1903 MonoTableInfo *methodt;
1904 MonoTableInfo *paramt;
1907 if (method->klass->image->dynamic) {
1908 MonoReflectionMethodAux *method_aux =
1909 g_hash_table_lookup (
1910 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1911 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
1913 for (i = 0; i < mono_method_signature (method)->param_count + 1; ++i)
1920 mono_class_init (klass);
1922 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1923 paramt = &klass->image->tables [MONO_TABLE_PARAM];
1924 idx = mono_method_get_index (method);
1926 guint32 cols [MONO_PARAM_SIZE];
1927 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1929 if (idx + 1 < methodt->rows)
1930 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
1932 lastp = paramt->rows + 1;
1934 for (i = param_index; i < lastp; ++i) {
1935 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
1937 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL)
1946 mono_method_get_wrapper_data (MonoMethod *method, guint32 id)
1949 g_assert (method != NULL);
1950 g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
1952 if (method->is_inflated)
1953 method = ((MonoMethodInflated *) method)->declaring;
1954 data = ((MonoMethodWrapper *)method)->method_data;
1955 g_assert (data != NULL);
1956 g_assert (id <= GPOINTER_TO_UINT (*data));
1961 default_stack_walk (MonoStackWalk func, gboolean do_il_offset, gpointer user_data) {
1962 g_error ("stack walk not installed");
1965 static MonoStackWalkImpl stack_walk = default_stack_walk;
1968 mono_stack_walk (MonoStackWalk func, gpointer user_data)
1970 stack_walk (func, TRUE, user_data);
1974 mono_stack_walk_no_il (MonoStackWalk func, gpointer user_data)
1976 stack_walk (func, FALSE, user_data);
1980 mono_install_stack_walk (MonoStackWalkImpl func)
1986 last_managed (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
1988 MonoMethod **dest = data;
1990 /*g_print ("In %s::%s [%d] [%d]\n", m->klass->name, m->name, no, ilo);*/
1996 mono_method_get_last_managed (void)
1998 MonoMethod *m = NULL;
1999 stack_walk (last_managed, FALSE, &m);
2003 static gboolean loader_lock_track_ownership = FALSE;
2008 * See docs/thread-safety.txt for the locking strategy.
2011 mono_loader_lock (void)
2013 mono_locks_acquire (&loader_mutex, LoaderLock);
2014 if (G_UNLIKELY (loader_lock_track_ownership)) {
2015 TlsSetValue (loader_lock_nest_id, GUINT_TO_POINTER (GPOINTER_TO_UINT (TlsGetValue (loader_lock_nest_id)) + 1));
2020 mono_loader_unlock (void)
2022 mono_locks_release (&loader_mutex, LoaderLock);
2023 if (G_UNLIKELY (loader_lock_track_ownership)) {
2024 TlsSetValue (loader_lock_nest_id, GUINT_TO_POINTER (GPOINTER_TO_UINT (TlsGetValue (loader_lock_nest_id)) - 1));
2029 * mono_loader_lock_track_ownership:
2031 * Set whenever the runtime should track ownership of the loader lock. If set to TRUE,
2032 * the mono_loader_lock_is_owned_by_self () can be called to query whenever the current
2033 * thread owns the loader lock.
2036 mono_loader_lock_track_ownership (gboolean track)
2038 loader_lock_track_ownership = track;
2042 * mono_loader_lock_is_owned_by_self:
2044 * Return whenever the current thread owns the loader lock.
2045 * This is useful to avoid blocking operations while holding the loader lock.
2048 mono_loader_lock_is_owned_by_self (void)
2050 g_assert (loader_lock_track_ownership);
2052 return GPOINTER_TO_UINT (TlsGetValue (loader_lock_nest_id)) > 0;
2056 * mono_method_signature:
2058 * Return the signature of the method M. On failure, returns NULL.
2060 MonoMethodSignature*
2061 mono_method_signature (MonoMethod *m)
2067 gboolean can_cache_signature;
2068 MonoGenericContainer *container;
2069 MonoMethodSignature *signature = NULL;
2073 /* We need memory barriers below because of the double-checked locking pattern */
2076 return m->signature;
2078 mono_loader_lock ();
2081 mono_loader_unlock ();
2082 return m->signature;
2085 if (m->is_inflated) {
2086 MonoMethodInflated *imethod = (MonoMethodInflated *) m;
2087 /* the lock is recursive */
2088 signature = mono_method_signature (imethod->declaring);
2089 signature = inflate_generic_signature (imethod->declaring->klass->image, signature, mono_method_get_context (m));
2091 inflated_signatures_size += mono_metadata_signature_size (signature);
2093 mono_memory_barrier ();
2094 m->signature = signature;
2095 mono_loader_unlock ();
2096 return m->signature;
2099 g_assert (mono_metadata_token_table (m->token) == MONO_TABLE_METHOD);
2100 idx = mono_metadata_token_index (m->token);
2101 img = m->klass->image;
2103 sig = mono_metadata_blob_heap (img, sig_offset = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_SIGNATURE));
2105 g_assert (!m->klass->generic_class);
2106 container = mono_method_get_generic_container (m);
2108 container = m->klass->generic_container;
2110 /* Generic signatures depend on the container so they cannot be cached */
2111 /* icall/pinvoke signatures cannot be cached cause we modify them below */
2112 can_cache_signature = !(m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && !(m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) && !container;
2114 /* If the method has parameter attributes, that can modify the signature */
2115 pattrs = mono_metadata_get_param_attrs (img, idx);
2117 can_cache_signature = FALSE;
2121 if (can_cache_signature)
2122 signature = g_hash_table_lookup (img->method_signatures, sig);
2125 const char *sig_body;
2126 /*TODO we should cache the failure result somewhere*/
2127 if (!mono_verifier_verify_method_signature (img, sig_offset, NULL)) {
2128 mono_loader_unlock ();
2132 size = mono_metadata_decode_blob_size (sig, &sig_body);
2134 signature = mono_metadata_parse_method_signature_full (img, container, idx, sig_body, NULL);
2136 mono_loader_unlock ();
2140 if (can_cache_signature)
2141 g_hash_table_insert (img->method_signatures, (gpointer)sig, signature);
2144 /* Verify metadata consistency */
2145 if (signature->generic_param_count) {
2146 if (!container || !container->is_method) {
2147 g_warning ("Signature claims method has generic parameters, but generic_params table says it doesn't for method 0x%08x from image %s", idx, img->name);
2150 if (container->type_argc != signature->generic_param_count) {
2151 g_warning ("Inconsistent generic parameter count. Signature says %d, generic_params table says %dfor method 0x%08x from image %s",
2152 signature->generic_param_count, container->type_argc, idx, img->name);
2155 } else if (container && container->is_method && container->type_argc) {
2156 g_warning ("generic_params table claims method has generic parameters, but signature says it doesn't for method 0x%08x from image %s", idx, img->name);
2159 if (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
2160 signature->pinvoke = 1;
2161 else if (m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
2162 MonoCallConvention conv = 0;
2163 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)m;
2164 signature->pinvoke = 1;
2166 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CALL_CONV_MASK) {
2167 case 0: /* no call conv, so using default */
2168 case PINVOKE_ATTRIBUTE_CALL_CONV_WINAPI:
2169 conv = MONO_CALL_DEFAULT;
2171 case PINVOKE_ATTRIBUTE_CALL_CONV_CDECL:
2174 case PINVOKE_ATTRIBUTE_CALL_CONV_STDCALL:
2175 conv = MONO_CALL_STDCALL;
2177 case PINVOKE_ATTRIBUTE_CALL_CONV_THISCALL:
2178 conv = MONO_CALL_THISCALL;
2180 case PINVOKE_ATTRIBUTE_CALL_CONV_FASTCALL:
2181 conv = MONO_CALL_FASTCALL;
2183 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERIC:
2184 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERICINST:
2186 g_warning ("unsupported calling convention : 0x%04x for method 0x%08x from image %s", piinfo->piflags, idx, img->name);
2189 signature->call_convention = conv;
2192 mono_memory_barrier ();
2193 m->signature = signature;
2195 mono_loader_unlock ();
2196 return m->signature;
2200 mono_method_get_name (MonoMethod *method)
2202 return method->name;
2206 mono_method_get_class (MonoMethod *method)
2208 return method->klass;
2212 mono_method_get_token (MonoMethod *method)
2214 return method->token;
2218 mono_method_get_header (MonoMethod *method)
2224 MonoMethodNormal* mn = (MonoMethodNormal*) method;
2225 MonoMethodHeader *header;
2227 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))
2231 if (G_LIKELY (mn->header))
2237 if (method->is_inflated) {
2238 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
2239 MonoMethodHeader *header;
2241 header = mono_method_get_header (imethod->declaring);
2243 mono_loader_lock ();
2246 mono_loader_unlock ();
2250 mn->header = inflate_generic_header (header, mono_method_get_context (method));
2251 mono_loader_unlock ();
2256 * Do most of the work outside the loader lock, to avoid assembly loader hook
2259 g_assert (mono_metadata_token_table (method->token) == MONO_TABLE_METHOD);
2260 idx = mono_metadata_token_index (method->token);
2261 img = method->klass->image;
2262 rva = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_RVA);
2263 loc = mono_image_rva_map (img, rva);
2267 if (!mono_verifier_verify_method_header (img, rva, NULL))
2270 header = mono_metadata_parse_mh_full (img, mono_method_get_generic_container (method), loc);
2272 mono_loader_lock ();
2275 /* header is allocated from the image mempool, no need to free it */
2276 mono_loader_unlock ();
2280 mono_memory_barrier ();
2282 mn->header = header;
2284 mono_loader_unlock ();
2289 mono_method_get_flags (MonoMethod *method, guint32 *iflags)
2292 *iflags = method->iflags;
2293 return method->flags;
2297 * Find the method index in the metadata methodDef table.
2300 mono_method_get_index (MonoMethod *method) {
2301 MonoClass *klass = method->klass;
2305 return mono_metadata_token_index (method->token);
2307 mono_class_setup_methods (klass);
2308 for (i = 0; i < klass->method.count; ++i) {
2309 if (method == klass->methods [i]) {
2310 if (klass->image->uncompressed_metadata)
2311 return mono_metadata_translate_token_index (klass->image, MONO_TABLE_METHOD, klass->method.first + i + 1);
2313 return klass->method.first + i + 1;