Merge pull request #901 from Blewzman/FixAggregateExceptionGetBaseException
[mono.git] / mono / metadata / loader.c
index 2b704c281a55d47f82c1f163654b7106fe72279a..f950055953eaa5f728b435c793012fb8ac6f895d 100644 (file)
@@ -129,6 +129,7 @@ mono_loader_cleanup (void)
 static void
 set_loader_error (MonoLoaderError *error)
 {
+       mono_loader_clear_error ();
        mono_native_tls_set_value (loader_error_thread_id, error);
 }
 
@@ -330,19 +331,18 @@ mono_loader_error_prepare_exception (MonoLoaderError *error)
        }
                
        case MONO_EXCEPTION_MISSING_FIELD: {
-               char *cnspace = g_strdup ((error->klass && *error->klass->name_space) ? error->klass->name_space : "");
-               char *cname = g_strdup (error->klass ? error->klass->name : "");
+               char *class_name;
                char *cmembername = g_strdup (error->member_name);
-                char *class_name;
+               if (error->klass)
+                       class_name = mono_type_get_full_name (error->klass);
+               else
+                       class_name = g_strdup ("");
 
                mono_loader_clear_error ();
-               class_name = g_strdup_printf ("%s%s%s", cnspace, cnspace ? "." : "", cname);
                
                ex = mono_get_exception_missing_field (class_name, cmembername);
                g_free (class_name);
-               g_free (cname);
                g_free (cmembername);
-               g_free (cnspace);
                break;
         }
        
@@ -532,13 +532,13 @@ mono_field_from_token (MonoImage *image, guint32 token, MonoClass **retklass,
                return result;
        }
 
-       mono_loader_lock ();
+       mono_image_lock (image);
        if ((field = g_hash_table_lookup (image->field_cache, GUINT_TO_POINTER (token)))) {
                *retklass = field->parent;
-               mono_loader_unlock ();
+               mono_image_unlock (image);
                return field;
        }
-       mono_loader_unlock ();
+       mono_image_unlock (image);
 
        if (mono_metadata_token_table (token) == MONO_TABLE_MEMBERREF)
                field = field_from_memberref (image, token, retklass, context);
@@ -555,10 +555,10 @@ mono_field_from_token (MonoImage *image, guint32 token, MonoClass **retklass,
                field = mono_class_get_field (k, token);
        }
 
-       mono_loader_lock ();
+       mono_image_lock (image);
        if (field && field->parent && !field->parent->generic_class && !field->parent->generic_container)
                g_hash_table_insert (image->field_cache, GUINT_TO_POINTER (token), field);
-       mono_loader_unlock ();
+       mono_image_unlock (image);
        return field;
 }
 
@@ -781,6 +781,25 @@ fail:
        return NULL;
 }
 
+/*
+ * mono_inflate_generic_signature:
+ *
+ *   Inflate SIG with CONTEXT, and return a canonical copy. On error, set ERROR, and return NULL.
+ */
+MonoMethodSignature*
+mono_inflate_generic_signature (MonoMethodSignature *sig, MonoGenericContext *context, MonoError *error)
+{
+       MonoMethodSignature *res, *cached;
+
+       res = inflate_generic_signature_checked (NULL, sig, context, error);
+       if (!mono_error_ok (error))
+               return NULL;
+       cached = mono_metadata_get_inflated_signature (res, context);
+       if (cached != res)
+               mono_metadata_free_inflated_signature (res);
+       return cached;
+}
+
 static MonoMethodHeader*
 inflate_generic_header (MonoMethodHeader *header, MonoGenericContext *context)
 {
@@ -836,9 +855,11 @@ mono_method_get_signature_full (MonoMethod *method, MonoImage *image, guint32 to
        if (method->klass->generic_class)
                return mono_method_signature (method);
 
+#ifndef DISABLE_REFLECTION_EMIT
        if (image->dynamic) {
                sig = mono_reflection_lookup_signature (image, method, token);
        } else {
+#endif
                mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
                sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
 
@@ -867,7 +888,9 @@ mono_method_get_signature_full (MonoMethod *method, MonoImage *image, guint32 to
                        mono_loader_set_error_bad_image (g_strdup_printf ("Incompatible method signature class token 0x%08x field name %s token 0x%08x on image %s", class, fname, token, image->name));
                        return NULL;
                }
+#ifndef DISABLE_REFLECTION_EMIT
        }
+#endif
 
 
        if (context) {
@@ -1181,11 +1204,32 @@ mono_dllmap_lookup (MonoImage *assembly, const char *dll, const char* func, cons
        return mono_dllmap_lookup_list (global_dll_map, dll, func, rdll, rfunc);
 }
 
-/*
+/**
  * mono_dllmap_insert:
+ * @assembly: if NULL, this is a global mapping, otherwise the remapping of the dynamic library will only apply to the specified assembly
+ * @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
+ * @func: if not null, the mapping will only applied to the named function (the value of EntryPoint)
+ * @tdll: The name of the library to map the specified @dll if it matches.
+ * @tfunc: if func is not NULL, the name of the function that replaces the invocation
  *
  * LOCKING: Acquires the loader lock.
  *
+ * This function is used to programatically add DllImport remapping in either
+ * a specific assembly, or as a global remapping.   This is done by remapping
+ * references in a DllImport attribute from the @dll library name into the @tdll
+ * name.    If the @dll name contains the prefix "i:", the comparison of the 
+ * library name is done without case sensitivity.
+ *
+ * If you pass @func, this is the name of the EntryPoint in a DllImport if specified
+ * or the name of the function as determined by DllImport.    If you pass @func, you
+ * must also pass @tfunc which is the name of the target function to invoke on a match.
+ *
+ * Example:
+ * mono_dllmap_insert (NULL, "i:libdemo.dll", NULL, relocated_demo_path, NULL);
+ *
+ * The above will remap DllImport statments for "libdemo.dll" and "LIBDEMO.DLL" to
+ * the contents of relocated_demo_path for all assemblies in the Mono process.
+ *
  * NOTE: This can be called before the runtime is initialized, for example from
  * mono_config_parse ().
  */
@@ -1265,6 +1309,19 @@ cached_module_load (const char *name, int flags, char **err)
        return res;
 }
 
+static MonoDl *internal_module;
+
+static gboolean
+is_absolute_path (const char *path)
+{
+#ifdef PLATFORM_MACOSX
+       if (!strncmp (path, "@executable_path/", 17) || !strncmp (path, "@loader_path/", 13) ||
+           !strncmp (path, "@rpath/", 7))
+           return TRUE;
+#endif
+       return g_path_is_absolute (path);
+}
+
 gpointer
 mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char **exc_arg)
 {
@@ -1279,9 +1336,10 @@ mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char
        const char *orig_scope;
        const char *new_scope;
        char *error_msg;
-       char *full_name, *file_name;
+       char *full_name, *file_name, *found_name = NULL;
        int i;
        MonoDl *module = NULL;
+       gboolean cached = FALSE;
 
        g_assert (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
 
@@ -1320,17 +1378,40 @@ mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char
 
        mono_dllmap_lookup (image, orig_scope, import, &new_scope, &import);
 
-       mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
-                       "DllImport attempting to load: '%s'.", new_scope);
+       if (!module) {
+               mono_loader_lock ();
+               if (!image->pinvoke_scopes) {
+                       image->pinvoke_scopes = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
+                       image->pinvoke_scope_filenames = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
+               }
+               module = g_hash_table_lookup (image->pinvoke_scopes, new_scope);
+               found_name = g_hash_table_lookup (image->pinvoke_scope_filenames, new_scope);
+               mono_loader_unlock ();
+               if (module)
+                       cached = TRUE;
+               if (found_name)
+                       found_name = g_strdup (found_name);
+       }
 
-       /* we allow a special name to dlopen from the running process namespace */
-       if (strcmp (new_scope, "__Internal") == 0)
-               module = mono_dl_open (NULL, MONO_DL_LAZY, &error_msg);
+       if (!module) {
+               mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
+                                       "DllImport attempting to load: '%s'.", new_scope);
+
+               /* we allow a special name to dlopen from the running process namespace */
+               if (strcmp (new_scope, "__Internal") == 0){
+                       if (internal_module == NULL)
+                               internal_module = mono_dl_open (NULL, MONO_DL_LAZY, &error_msg);
+                       module = internal_module;
+               }
+       }
 
        /*
         * Try loading the module using a variety of names
         */
        for (i = 0; i < 4; ++i) {
+               char *base_name = NULL, *dir_name = NULL;
+               gboolean is_absolute = is_absolute_path (new_scope);
+               
                switch (i) {
                case 0:
                        /* Try the original name */
@@ -1346,12 +1427,21 @@ mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char
                                continue;
                        break;
                case 2:
-                       if (strstr (new_scope, "lib") != new_scope) {
+                       if (is_absolute) {
+                               dir_name = g_path_get_dirname (new_scope);
+                               base_name = g_path_get_basename (new_scope);
+                               if (strstr (base_name, "lib") != base_name) {
+                                       char *tmp = g_strdup_printf ("lib%s", base_name);       
+                                       g_free (base_name);
+                                       base_name = tmp;
+                                       file_name = g_strdup_printf ("%s%s%s", dir_name, G_DIR_SEPARATOR_S, base_name);
+                                       break;
+                               }
+                       } else if (strstr (new_scope, "lib") != new_scope) {
                                file_name = g_strdup_printf ("lib%s", new_scope);
+                               break;
                        }
-                       else
-                               continue;
-                       break;
+                       continue;
                default:
 #ifndef TARGET_WIN32
                        if (!g_ascii_strcasecmp ("user32.dll", new_scope) ||
@@ -1366,19 +1456,38 @@ mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char
                        break;
 #endif
                }
+               
+               if (is_absolute) {
+                       if (!dir_name)
+                               dir_name = g_path_get_dirname (file_name);
+                       if (!base_name)
+                               base_name = g_path_get_basename (file_name);
+               }
+               
+               if (!module && is_absolute) {
+                       module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
+                       if (!module) {
+                               mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
+                                               "DllImport error loading library '%s': '%s'.",
+                                                       file_name, error_msg);
+                               g_free (error_msg);
+                       } else {
+                               found_name = g_strdup (file_name);
+                       }
+               }
 
-               if (!module) {
+               if (!module && !is_absolute) {
                        void *iter = NULL;
                        char *mdirname = g_path_get_dirname (image->name);
                        while ((full_name = mono_dl_build_path (mdirname, file_name, &iter))) {
-                               mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
-                                       "DllImport loading library: '%s'.", full_name);
                                module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
                                if (!module) {
                                        mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
-                                               "DllImport error loading library '%s'.",
-                                               error_msg);
+                                               "DllImport error loading library '%s': '%s'.",
+                                                               full_name, error_msg);
                                        g_free (error_msg);
+                               } else {
+                                       found_name = g_strdup (full_name);
                                }
                                g_free (full_name);
                                if (module)
@@ -1389,15 +1498,16 @@ mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char
 
                if (!module) {
                        void *iter = NULL;
-                       while ((full_name = mono_dl_build_path (NULL, file_name, &iter))) {
-                               mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
-                                               "DllImport loading location: '%s'.", full_name);
+                       char *file_or_base = is_absolute ? base_name : file_name;
+                       while ((full_name = mono_dl_build_path (dir_name, file_or_base, &iter))) {
                                module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
                                if (!module) {
                                        mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
-                                                       "DllImport error loading library: '%s'.",
-                                                       error_msg);
+                                                       "DllImport error loading library '%s': '%s'.",
+                                                               full_name, error_msg);
                                        g_free (error_msg);
+                               } else {
+                                       found_name = g_strdup (full_name);
                                }
                                g_free (full_name);
                                if (module)
@@ -1406,17 +1516,21 @@ mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char
                }
 
                if (!module) {
-                       mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
-                                       "DllImport loading: '%s'.", file_name);
                        module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
                        if (!module) {
                                mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
-                                               "DllImport error loading library '%s'.",
-                                               error_msg);
+                                               "DllImport error loading library '%s': '%s'.",
+                                                       file_name, error_msg);
+                       } else {
+                               found_name = g_strdup (file_name);
                        }
                }
 
                g_free (file_name);
+               if (is_absolute) {
+                       g_free (base_name);
+                       g_free (dir_name);
+               }
 
                if (module)
                        break;
@@ -1435,6 +1549,21 @@ mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char
                return NULL;
        }
 
+       if (!cached) {
+               mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
+                                       "DllImport loaded library '%s'.", found_name);
+               mono_loader_lock ();
+               if (!g_hash_table_lookup (image->pinvoke_scopes, new_scope)) {
+                       g_hash_table_insert (image->pinvoke_scopes, g_strdup (new_scope), module);
+                       g_hash_table_insert (image->pinvoke_scope_filenames, g_strdup (new_scope), g_strdup (found_name));
+               }
+               mono_loader_unlock ();
+       }
+
+       mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
+                               "DllImport searching in: '%s' ('%s').", new_scope, found_name);
+       g_free (found_name);
+
 #ifdef TARGET_WIN32
        if (import && import [0] == '#' && isdigit (import [1])) {
                char *end;
@@ -1683,7 +1812,7 @@ MonoMethod *
 mono_get_method_full (MonoImage *image, guint32 token, MonoClass *klass,
                      MonoGenericContext *context)
 {
-       MonoMethod *result;
+       MonoMethod *result = NULL;
        gboolean used_context = FALSE;
 
        /* We do everything inside the lock to prevent creation races */
@@ -1694,7 +1823,7 @@ mono_get_method_full (MonoImage *image, guint32 token, MonoClass *klass,
                if (!image->method_cache)
                        image->method_cache = g_hash_table_new (NULL, NULL);
                result = g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
-       } else {
+       } else if (!image->dynamic) {
                if (!image->methodref_cache)
                        image->methodref_cache = g_hash_table_new (NULL, NULL);
                result = g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
@@ -1704,16 +1833,18 @@ mono_get_method_full (MonoImage *image, guint32 token, MonoClass *klass,
        if (result)
                return result;
 
+
        result = mono_get_method_from_token (image, token, klass, context, &used_context);
        if (!result)
                return NULL;
 
        mono_image_lock (image);
        if (!used_context && !result->is_inflated) {
-               MonoMethod *result2;
+               MonoMethod *result2 = NULL;
+
                if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
                        result2 = g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
-               else
+               else if (!image->dynamic)
                        result2 = g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
 
                if (result2) {
@@ -1723,7 +1854,7 @@ mono_get_method_full (MonoImage *image, guint32 token, MonoClass *klass,
 
                if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
                        g_hash_table_insert (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)), result);
-               else
+               else if (!image->dynamic)
                        g_hash_table_insert (image->methodref_cache, GINT_TO_POINTER (token), result);
        }
 
@@ -2124,7 +2255,7 @@ stack_walk_adapter (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
                return FALSE;
        case FRAME_TYPE_MANAGED:
                g_assert (frame->ji);
-               return d->func (frame->ji->method, frame->native_offset, frame->il_offset, frame->managed, d->user_data);
+               return d->func (mono_jit_info_get_method (frame->ji), frame->native_offset, frame->il_offset, frame->managed, d->user_data);
                break;
        default:
                g_assert_not_reached ();
@@ -2319,9 +2450,8 @@ mono_method_signature_checked (MonoMethod *m, MonoError *error)
 
                signature = mono_metadata_parse_method_signature_full (img, container, idx, sig_body, NULL);
                if (!signature) {
-                       mono_loader_clear_error ();
+                       mono_error_set_from_loader_error (error);
                        mono_loader_unlock ();
-                       mono_error_set_method_load (error, m->klass, m->name, "");
                        return NULL;
                }