2005-01-31 Zoltan Varga <vargaz@freemail.hu>
[mono.git] / mono / metadata / appdomain.c
index c3033d16829867db0ea0f15ddd6f40804c93d180..1fac818ce60ba3c023303dfa6b650232d5d49315 100644 (file)
@@ -16,7 +16,8 @@
 #include <mono/os/gc_wrapper.h>
 
 #include <mono/metadata/object.h>
-#include <mono/metadata/appdomain.h>
+#include <mono/metadata/domain-internals.h>
+#include "mono/metadata/metadata-internals.h"
 #include <mono/metadata/assembly.h>
 #include <mono/metadata/exception.h>
 #include <mono/metadata/threads.h>
 #include <mono/metadata/tabledefs.h>
 #include <mono/metadata/gc-internal.h>
 #include <mono/metadata/marshal.h>
+#include <mono/metadata/threadpool.h>
 #include <mono/utils/mono-uri.h>
 
-#define MONO_CORLIB_VERSION 14
+#define MONO_CORLIB_VERSION 32
 
 CRITICAL_SECTION mono_delegate_section;
 
@@ -40,16 +42,20 @@ mono_domain_assembly_preload (MonoAssemblyName *aname,
                              gchar **assemblies_path,
                              gpointer user_data);
 
+static MonoAssembly *
+mono_domain_assembly_search (MonoAssemblyName *aname,
+                                                        gpointer user_data);
+
 static void
 mono_domain_fire_assembly_load (MonoAssembly *assembly, gpointer user_data);
 
-static MonoMethod *
-look_for_method_by_name (MonoClass *klass, const gchar *name);
+static void
+add_assemblies_to_domain (MonoDomain *domain, MonoAssembly *ass, GHashTable *hash);
 
 static void
 mono_domain_unload (MonoDomain *domain);
 
-/*
+/**
  * mono_runtime_init:
  * @domain: domain returned by mono_init ()
  *
@@ -68,10 +74,14 @@ mono_runtime_init (MonoDomain *domain, MonoThreadStartCB start_cb,
        MonoAppDomainSetup *setup;
        MonoAppDomain *ad;
        MonoClass *class;
-
-       mono_marshal_init ();
+       MonoString *arg;
        
+       MONO_GC_PRE_INIT ();
+       mono_thread_pool_init ();
+       mono_marshal_init ();
+
        mono_install_assembly_preload_hook (mono_domain_assembly_preload, NULL);
+       mono_install_assembly_search_hook (mono_domain_assembly_search, NULL);
        mono_install_assembly_load_hook (mono_domain_fire_assembly_load, NULL);
        mono_install_lookup_dynamic_token (mono_reflection_lookup_dynamic_token);
 
@@ -93,22 +103,30 @@ mono_runtime_init (MonoDomain *domain, MonoThreadStartCB start_cb,
 
        mono_type_initialization_init ();
 
+       
        /*
         * Create an instance early since we can't do it when there is no memory.
         */
-       domain->out_of_memory_ex = mono_exception_from_name (mono_defaults.corlib, "System", "OutOfMemoryException");
+       arg = mono_string_new (domain, "Out of memory");
+       domain->out_of_memory_ex = mono_exception_from_name_two_strings (mono_defaults.corlib, "System", "OutOfMemoryException", arg, NULL);
+       
        /* 
         * These two are needed because the signal handlers might be executing on
         * an alternate stack, and Boehm GC can't handle that.
         */
-       domain->null_reference_ex = mono_exception_from_name (mono_defaults.corlib, "System", "NullReferenceException");
-       domain->stack_overflow_ex = mono_exception_from_name (mono_defaults.corlib, "System", "StackOverflowException");
+       arg = mono_string_new (domain, "A null value was found where an object instance was required");
+       domain->null_reference_ex = mono_exception_from_name_two_strings (mono_defaults.corlib, "System", "NullReferenceException", arg, NULL);
+       arg = mono_string_new (domain, "The requested operation caused a stack overflow.");
+       domain->stack_overflow_ex = mono_exception_from_name_two_strings (mono_defaults.corlib, "System", "StackOverflowException", arg, NULL);
        
        /* GC init has to happen after thread init */
        mono_gc_init ();
 
        mono_network_init ();
 
+       /* mscorlib is loaded before we install the load hook */
+       mono_domain_fire_assembly_load (mono_defaults.corlib->assembly, NULL);
+
        return;
 }
 
@@ -170,7 +188,7 @@ mono_runtime_cleanup (MonoDomain *domain)
 static MonoDomainFunc quit_function = NULL;
 
 void
-mono_runtime_install_cleanup (MonoDomainFunc func)
+mono_install_runtime_cleanup (MonoDomainFunc func)
 {
        quit_function = func;
 }
@@ -179,7 +197,7 @@ void
 mono_runtime_quit ()
 {
        if (quit_function != NULL)
-               quit_function (mono_root_domain, NULL);
+               quit_function (mono_get_root_domain (), NULL);
 }
 
 gboolean
@@ -221,7 +239,7 @@ mono_domain_try_type_resolve (MonoDomain *domain, char *name, MonoObject *tb)
                klass = domain->domain->mbr.obj.vtable->klass;
                g_assert (klass);
 
-               method = look_for_method_by_name (klass, "DoTypeResolve");
+               method = mono_class_get_method_from_name (klass, "DoTypeResolve", -1);
                if (method == NULL) {
                        g_warning ("Method AppDomain.DoTypeResolve not found.\n");
                        return NULL;
@@ -235,19 +253,38 @@ mono_domain_try_type_resolve (MonoDomain *domain, char *name, MonoObject *tb)
        return (MonoReflectionAssembly *) mono_runtime_invoke (method, domain->domain, params, NULL);
 }
 
-/*
+/**
+ * mono_domain_owns_vtable_slot:
+ *
+ *   Returns whenever VTABLE_SLOT is inside a vtable which belongs to DOMAIN.
+ */
+gboolean
+mono_domain_owns_vtable_slot (MonoDomain *domain, gpointer vtable_slot)
+{
+       gboolean res;
+
+       mono_domain_lock (domain);
+       res = mono_mempool_contains_addr (domain->mp, vtable_slot);
+       mono_domain_unlock (domain);
+       return res;
+}
+
+/**
  * mono_domain_set:
+ * @domain: domain
+ * @force: force setting.
  *
  *   Set the current appdomain to @domain. If @force is set, set it even
  * if it is being unloaded.
+ *
  * Returns:
- *   - TRUE on success
- *   - FALSE if the domain is being unloaded
+ *   TRUE on success;
+ *   FALSE if the domain is unloaded
  */
 gboolean
 mono_domain_set (MonoDomain *domain, gboolean force)
 {
-       if (!force && (domain->state == MONO_APPDOMAIN_UNLOADING || domain->state == MONO_APPDOMAIN_UNLOADED))
+       if (!force && domain->state == MONO_APPDOMAIN_UNLOADED)
                return FALSE;
 
        mono_domain_set_internal (domain);
@@ -255,32 +292,6 @@ mono_domain_set (MonoDomain *domain, gboolean force)
        return TRUE;
 }
 
-void
-ves_icall_System_AppDomainSetup_InitAppDomainSetup (MonoAppDomainSetup *setup)
-{
-       MonoDomain* domain = mono_domain_get ();
-       MonoAssembly *assembly;
-       gchar *str;
-       gchar *config_suffix;
-       
-       MONO_ARCH_SAVE_REGS;
-
-       if (!domain->entry_assembly)
-               assembly = mono_root_domain->entry_assembly;
-       else 
-               assembly = domain->entry_assembly;
-
-       g_assert (assembly);
-
-       setup->application_base = mono_string_new (domain, assembly->basedir);
-
-       config_suffix = g_strconcat (assembly->aname.name, ".exe.config", NULL);
-       str = g_build_filename (assembly->basedir, config_suffix, NULL);
-       g_free (config_suffix);
-       setup->configuration_file = mono_string_new (domain, str);
-       g_free (str);
-}
-
 MonoObject *
 ves_icall_System_AppDomain_GetData (MonoAppDomain *ad, MonoString *name)
 {
@@ -291,7 +302,9 @@ ves_icall_System_AppDomain_GetData (MonoAppDomain *ad, MonoString *name)
        MONO_ARCH_SAVE_REGS;
 
        g_assert (ad != NULL);
-       g_assert (name != NULL);
+
+       if (name == NULL)
+               mono_raise_exception (mono_get_exception_argument_null ("name"));
 
        str = mono_string_to_utf8 (name);
 
@@ -335,7 +348,9 @@ ves_icall_System_AppDomain_SetData (MonoAppDomain *ad, MonoString *name, MonoObj
        MONO_ARCH_SAVE_REGS;
 
        g_assert (ad != NULL);
-       g_assert (name != NULL);
+
+       if (name == NULL)
+               mono_raise_exception (mono_get_exception_argument_null ("name"));
 
        mono_domain_lock (add);
 
@@ -376,13 +391,24 @@ ves_icall_System_AppDomain_getCurDomain ()
        return add->domain;
 }
 
+MonoAppDomain *
+ves_icall_System_AppDomain_getRootDomain ()
+{
+       MonoDomain *root = mono_get_root_domain ();
+
+       MONO_ARCH_SAVE_REGS;
+
+       return root->domain;
+}
+
 MonoAppDomain *
 ves_icall_System_AppDomain_createDomain (MonoString *friendly_name, MonoAppDomainSetup *setup)
 {
-       /*MonoDomain *domain = mono_domain_get (); */
+       MonoDomain *domain = mono_domain_get ();
        MonoClass *adclass;
        MonoAppDomain *ad;
        MonoDomain *data;
+       GSList *tmp;
        
        MONO_ARCH_SAVE_REGS;
 
@@ -398,34 +424,33 @@ ves_icall_System_AppDomain_createDomain (MonoString *friendly_name, MonoAppDomai
        data->friendly_name = mono_string_to_utf8 (friendly_name);
        data->out_of_memory_ex = mono_exception_from_name_domain (data, mono_defaults.corlib, "System", "OutOfMemoryException");
 
+       if (!setup->application_base) {
+               /* Inherit from the root domain since MS.NET does this */
+               MonoDomain *root = mono_get_root_domain ();
+               setup->application_base = mono_string_new_utf16 (data, mono_string_chars (root->setup->application_base), mono_string_length (root->setup->application_base));
+       }
+
        mono_context_init (data);
 
-       /* FIXME: what to do next ? */
+       /* The new appdomain should have all assemblies loaded */
+       mono_domain_lock (domain);
+       /*g_print ("copy assemblies from domain %p (%s)\n", domain, domain->friendly_name);*/
+       for (tmp = domain->domain_assemblies; tmp; tmp = tmp->next)
+               add_assemblies_to_domain (data, tmp->data, NULL);
+       mono_domain_unlock (domain);
 
        return ad;
 }
 
-typedef struct {
-       MonoArray *res;
-       MonoDomain *domain;
-       int idx;
-} add_assembly_helper_t;
-
-static void
-add_assembly (gpointer key, gpointer value, gpointer user_data)
-{
-       add_assembly_helper_t *ah = (add_assembly_helper_t *) user_data;
-
-       mono_array_set (ah->res, gpointer, ah->idx++, mono_assembly_get_object (ah->domain, value));
-}
-
 MonoArray *
 ves_icall_System_AppDomain_GetAssemblies (MonoAppDomain *ad)
 {
        MonoDomain *domain = ad->data; 
+       MonoAssembly* ass;
        static MonoClass *System_Reflection_Assembly;
        MonoArray *res;
-       add_assembly_helper_t ah;
+       GSList *tmp;
+       int i, count;
        
        MONO_ARCH_SAVE_REGS;
 
@@ -433,37 +458,28 @@ ves_icall_System_AppDomain_GetAssemblies (MonoAppDomain *ad)
                System_Reflection_Assembly = mono_class_from_name (
                        mono_defaults.corlib, "System.Reflection", "Assembly");
 
-       res = mono_array_new (domain, System_Reflection_Assembly, g_hash_table_size (domain->assemblies));
-
-       ah.domain = domain;
-       ah.res = res;
-       ah.idx = 0;
+       count = 0;
+       /* Need to skip internal assembly builders created by remoting */
        mono_domain_lock (domain);
-       g_hash_table_foreach (domain->assemblies, add_assembly, &ah);
+       for (tmp = domain->domain_assemblies; tmp; tmp = tmp->next) {
+               ass = tmp->data;
+               if (!ass->corlib_internal)
+                       count++;
+       }
+       res = mono_array_new (domain, System_Reflection_Assembly, count);
+       i = 0;
+       for (tmp = domain->domain_assemblies; tmp; tmp = tmp->next) {
+               ass = tmp->data;
+               if (ass->corlib_internal)
+                       continue;
+               mono_array_set (res, gpointer, i, mono_assembly_get_object (domain, ass));
+               ++i;
+       }
        mono_domain_unlock (domain);
 
        return res;
 }
 
-/*
- * Used to find methods in AppDomain class.
- * It only works if there are no multiple signatures for any given method name
- */
-static MonoMethod *
-look_for_method_by_name (MonoClass *klass, const gchar *name)
-{
-       gint i;
-       MonoMethod *method;
-
-       for (i = 0; i < klass->method.count; i++) {
-               method = klass->methods [i];
-               if (!strcmp (method->name, name))
-                       return method;
-       }
-
-       return NULL;
-}
-
 static MonoReflectionAssembly *
 try_assembly_resolve (MonoDomain *domain, MonoString *fname)
 {
@@ -476,7 +492,7 @@ try_assembly_resolve (MonoDomain *domain, MonoString *fname)
        klass = domain->domain->mbr.obj.vtable->klass;
        g_assert (klass);
        
-       method = look_for_method_by_name (klass, "DoAssemblyResolve");
+       method = mono_class_get_method_from_name (klass, "DoAssemblyResolve", -1);
        if (method == NULL) {
                g_warning ("Method AppDomain.DoAssemblyResolve not found.\n");
                return NULL;
@@ -486,27 +502,43 @@ try_assembly_resolve (MonoDomain *domain, MonoString *fname)
        return (MonoReflectionAssembly *) mono_runtime_invoke (method, domain->domain, params, NULL);
 }
 
+/*
+ * LOCKING: assumes domain is already locked.
+ */
 static void
-add_assemblies_to_domain (MonoDomain *domain, MonoAssembly *ass)
+add_assemblies_to_domain (MonoDomain *domain, MonoAssembly *ass, GHashTable *ht)
 {
        gint i;
+       GSList *tmp;
+       gboolean destroy_ht = FALSE;
 
        if (!ass->aname.name)
                return;
 
-       mono_domain_lock (domain);
-
-       if (g_hash_table_lookup (domain->assemblies, ass->aname.name)) {
-               mono_domain_unlock (domain);
-               return; /* This is ok while no lazy loading of assemblies */
+       if (!ht) {
+               ht = g_hash_table_new (mono_aligned_addr_hash, NULL);
+               destroy_ht = TRUE;
        }
 
-       g_hash_table_insert (domain->assemblies, (gpointer) ass->aname.name, ass);
-       mono_domain_unlock (domain);
+       /* FIXME: handle lazy loaded assemblies */
+       for (tmp = domain->domain_assemblies; tmp; tmp = tmp->next) {
+               g_hash_table_insert (ht, tmp->data, tmp->data);
+       }
+       if (!g_hash_table_lookup (ht, ass)) {
+               mono_assembly_addref (ass);
+               g_hash_table_insert (ht, ass, ass);
+               domain->domain_assemblies = g_slist_prepend (domain->domain_assemblies, ass);
+       }
 
-       if (ass->image->references)
-               for (i = 0; ass->image->references [i] != NULL; i++)
-                       add_assemblies_to_domain (domain, ass->image->references [i]);
+       if (ass->image->references) {
+               for (i = 0; ass->image->references [i] != NULL; i++) {
+                       if (!g_hash_table_lookup (ht, ass->image->references [i])) {
+                               add_assemblies_to_domain (domain, ass->image->references [i], ht);
+                       }
+               }
+       }
+       if (destroy_ht)
+               g_hash_table_destroy (ht);
 }
 
 static void
@@ -520,14 +552,15 @@ mono_domain_fire_assembly_load (MonoAssembly *assembly, gpointer user_data)
 
        klass = domain->domain->mbr.obj.vtable->klass;
 
-       
-       method = look_for_method_by_name (klass, "DoAssemblyLoad");
+       method = mono_class_get_method_from_name (klass, "DoAssemblyLoad", -1);
        if (method == NULL) {
                g_warning ("Method AppDomain.DoAssemblyLoad not found.\n");
                return;
        }
 
-       add_assemblies_to_domain (domain, assembly);
+       mono_domain_lock (domain);
+       add_assemblies_to_domain (domain, assembly, NULL);
+       mono_domain_unlock (domain);
 
        ref_assembly = mono_assembly_get_object (domain, assembly);
        g_assert (ref_assembly);
@@ -536,6 +569,56 @@ mono_domain_fire_assembly_load (MonoAssembly *assembly, gpointer user_data)
        mono_runtime_invoke (method, domain->domain, params, NULL);
 }
 
+static gchar *
+reduce_path (const gchar *dirname)
+{
+       gchar **parts;
+       gchar *part;
+       GList *list, *tmp;
+       GString *result;
+       gchar *res;
+       gint i;
+
+       parts = g_strsplit (dirname, G_DIR_SEPARATOR_S, 0);
+       list = NULL;
+       for (i = 0; (part = parts [i]) != NULL; i++) {
+               if (!strcmp (part, "."))
+                       continue;
+
+               if (!strcmp (part, "..")) {
+                       if (list && list->next) /* Don't remove root */
+                               list = g_list_delete_link (list, list);
+               } else {
+                       list = g_list_prepend (list, part);
+               }
+       }
+
+       result = g_string_new ("");
+       list = g_list_reverse (list);
+
+       for (tmp = list; tmp; tmp = tmp->next) {
+               gchar *data = (gchar *) tmp->data;
+
+               if (data && *data) {
+#ifdef PLATFORM_WIN32
+                       if (result->len == 0)
+                               g_string_append_printf (result, "%s\\", data);
+                       else if (result->str [result->len - 1] == '\\')
+                               g_string_append_printf (result, "%s", data);
+                       else
+#endif
+                               g_string_append_printf (result, "%c%s",
+                                                       G_DIR_SEPARATOR, data);
+               }
+       }
+       
+       res = result->str;
+       g_string_free (result, FALSE);
+       g_list_free (list);
+       g_strfreev (parts);
+       return res;
+}
+
 static void
 set_domain_search_path (MonoDomain *domain)
 {
@@ -546,14 +629,16 @@ set_domain_search_path (MonoDomain *domain)
        gint npaths = 0;
        gchar **pvt_split = NULL;
        GError *error = NULL;
+       gint appbaselen = -1;
 
        if ((domain->search_path != NULL) && !domain->setup->path_changed)
                return;
 
        setup = domain->setup;
-       if (setup->application_base)
-               npaths++;
+       if (!setup->application_base)
+               return; /* Must set application base to get private path working */
 
+       npaths++;
        if (setup->private_bin_path) {
                utf8 = mono_string_to_utf8 (setup->private_bin_path);
                pvt_split = g_strsplit (utf8, G_SEARCHPATH_SEPARATOR_S, 1000);
@@ -579,49 +664,64 @@ set_domain_search_path (MonoDomain *domain)
 
        domain->search_path = tmp = g_malloc ((npaths + 1) * sizeof (gchar *));
        tmp [npaths] = NULL;
-       if (setup->application_base) {
-               *tmp = mono_string_to_utf8 (setup->application_base);
-
-               /* FIXME: is this needed? */
-               if (strncmp (*tmp, "file://", 7) == 0) {
-                       gchar *file = *tmp;
-                       gchar *uri = *tmp;
-                       gchar *tmpuri;
-
-                       if (uri [7] != '/')
-                               uri = g_strdup_printf ("file:///%s", uri + 7);
-
-                       tmpuri = uri;
-                       uri = mono_escape_uri_string (tmpuri);
-                       *tmp = g_filename_from_uri (uri, NULL, &error);
-                       g_free (uri);
-
-                       if (tmpuri != file)
-                               g_free (tmpuri);
-
-                       if (error != NULL) {
-                               g_warning ("%s\n", error->message);
-                               g_error_free (error);
-                               *tmp = file;
-                       } else {
-                               g_free (file);
-                       }
+
+       *tmp = mono_string_to_utf8 (setup->application_base);
+
+       /* FIXME: is this needed? */
+       if (strncmp (*tmp, "file://", 7) == 0) {
+               gchar *file = *tmp;
+               gchar *uri = *tmp;
+               gchar *tmpuri;
+
+               if (uri [7] != '/')
+                       uri = g_strdup_printf ("file:///%s", uri + 7);
+
+               tmpuri = uri;
+               uri = mono_escape_uri_string (tmpuri);
+               *tmp = g_filename_from_uri (uri, NULL, &error);
+               g_free (uri);
+
+               if (tmpuri != file)
+                       g_free (tmpuri);
+
+               if (error != NULL) {
+                       g_warning ("%s\n", error->message);
+                       g_error_free (error);
+                       *tmp = file;
+               } else {
+                       g_free (file);
                }
-               
-       } else {
-               *tmp = g_strdup ("");
        }
 
        for (i = 1; pvt_split && i < npaths; i++) {
-               if (*tmp [0] == '\0' || g_path_is_absolute (pvt_split [i - 1])) {
+               if (g_path_is_absolute (pvt_split [i - 1])) {
                        tmp [i] = g_strdup (pvt_split [i - 1]);
-                       continue;
+               } else {
+                       tmp [i] = g_build_filename (tmp [0], pvt_split [i - 1], NULL);
                }
 
-               tmp [i] = g_build_filename (tmp [0], pvt_split [i - 1], NULL);
+               if (strchr (tmp [i], '.')) {
+                       gchar *reduced;
+                       gchar *freeme;
+
+                       reduced = reduce_path (tmp [i]);
+                       if (appbaselen == -1)
+                               appbaselen = strlen (tmp [0]);
+
+                       if (strncmp (tmp [0], reduced, appbaselen)) {
+                               g_free (reduced);
+                               g_free (tmp [i]);
+                               tmp [i] = g_strdup ("");
+                               continue;
+                       }
+
+                       freeme = tmp [i];
+                       tmp [i] = reduced;
+                       g_free (freeme);
+               }
        }
        
-       if (setup->private_bin_path_probe != NULL && setup->application_base) {
+       if (setup->private_bin_path_probe != NULL) {
                g_free (tmp [0]);
                tmp [0] = g_strdup ("");
        }
@@ -631,29 +731,67 @@ set_domain_search_path (MonoDomain *domain)
        g_strfreev (pvt_split);
 }
 
+static gboolean
+try_load_from (MonoAssembly **assembly, const gchar *path1, const gchar *path2,
+                                       const gchar *path3, const gchar *path4)
+{
+       gchar *fullpath;
+
+       *assembly = NULL;
+       fullpath = g_build_filename (path1, path2, path3, path4, NULL);
+       if (g_file_test (fullpath, G_FILE_TEST_IS_REGULAR))
+               *assembly = mono_assembly_open (fullpath, NULL);
+
+       g_free (fullpath);
+       return (*assembly != NULL);
+}
+
 static MonoAssembly *
-real_load (gchar **search_path, const gchar *culture, gchar *filename)
+real_load (gchar **search_path, const gchar *culture, const gchar *name)
 {
-       MonoAssembly *result;
+       MonoAssembly *result = NULL;
        gchar **path;
-       gchar *fullpath;
+       gchar *filename;
+       const gchar *local_culture;
+       gint len;
+
+       if (!culture || *culture == '\0') {
+               local_culture = "";
+       } else {
+               local_culture = culture;
+       }
+
+       filename =  g_strconcat (name, ".dll", NULL);
+       len = strlen (filename);
 
        for (path = search_path; *path; path++) {
                if (**path == '\0')
                        continue; /* Ignore empty ApplicationBase */
 
-               if (culture && g_strcasecmp (culture, "neutral"))
-                       fullpath = g_build_filename (*path, culture, filename, NULL);
-               else
-                       fullpath = g_build_filename (*path, filename, NULL);
-
-               result = mono_assembly_open (fullpath, NULL);
-               g_free (fullpath);
-               if (result)
-                       return result;
+               /* See test cases in bug #58992 and bug #57710 */
+               /* 1st try: [culture]/[name].dll (culture may be empty) */
+               strcpy (filename + len - 4, ".dll");
+               if (try_load_from (&result, *path, local_culture, "", filename))
+                       break;
+
+               /* 2nd try: [culture]/[name].exe (culture may be empty) */
+               strcpy (filename + len - 4, ".exe");
+               if (try_load_from (&result, *path, local_culture, "", filename))
+                       break;
+
+               /* 3rd try: [culture]/[name]/[name].dll (culture may be empty) */
+               strcpy (filename + len - 4, ".dll");
+               if (try_load_from (&result, *path, local_culture, name, filename))
+                       break;
+
+               /* 4th try: [culture]/[name]/[name].exe (culture may be empty) */
+               strcpy (filename + len - 4, ".exe");
+               if (try_load_from (&result, *path, local_culture, name, filename))
+                       break;
        }
 
-       return NULL;
+       g_free (filename);
+       return result;
 }
 
 /*
@@ -666,50 +804,44 @@ mono_domain_assembly_preload (MonoAssemblyName *aname,
                              gpointer user_data)
 {
        MonoDomain *domain = mono_domain_get ();
-       MonoAssembly *result;
-       gchar *dll, *exe;
+       MonoAssembly *result = NULL;
 
        set_domain_search_path (domain);
 
-       dll = g_strconcat (aname->name, ".dll", NULL);
-       exe = g_strdup (dll);
-       strcpy (exe + strlen (exe) - 4, ".exe");
-
        if (domain->search_path && domain->search_path [0] != NULL) {
-               /* TODO: should also search in name/name.dll and name/name.exe from appbase */
-               result = real_load (domain->search_path, aname->culture, dll);
-               if (result) {
-                       g_free (dll);
-                       g_free (exe);
-                       return result;
-               }
+               result = real_load (domain->search_path, aname->culture, aname->name);
+       }
 
-               result = real_load (domain->search_path, aname->culture, exe);
-               if (result) {
-                       g_free (dll);
-                       g_free (exe);
-                       return result;
-               }
+       if (result == NULL && assemblies_path && assemblies_path [0] != NULL) {
+               result = real_load (assemblies_path, aname->culture, aname->name);
        }
 
-       if (assemblies_path && assemblies_path [0] != NULL) {
-               result = real_load (assemblies_path, aname->culture, dll);
-               if (result) {
-                       g_free (dll);
-                       g_free (exe);
-                       return result;
-               }
+       return result;
+}
 
-               result = real_load (assemblies_path, aname->culture, exe);
-               if (result) {
-                       g_free (dll);
-                       g_free (exe);
-                       return result;
-               }
+/*
+ * Check whenever a given assembly was already loaded in the current appdomain.
+ */
+static MonoAssembly *
+mono_domain_assembly_search (MonoAssemblyName *aname,
+                                                        gpointer user_data)
+{
+       MonoDomain *domain = mono_domain_get ();
+       GSList *tmp;
+       MonoAssembly *ass;
+
+       mono_domain_lock (domain);
+       for (tmp = domain->domain_assemblies; tmp; tmp = tmp->next) {
+               ass = tmp->data;
+               /* Dynamic assemblies can't match here in MS.NET */
+               if (ass->dynamic || !mono_assembly_names_equal (aname, &ass->aname))
+                       continue;
+
+               mono_domain_unlock (domain);
+               return ass;
        }
-       
-       g_free (dll);
-       g_free (exe);
+       mono_domain_unlock (domain);
+
        return NULL;
 }
 
@@ -783,7 +915,7 @@ get_info_from_assembly_name (MonoString *assRef, MonoAssemblyName *aname)
 
        while (*tmp) {
                value = g_strstrip (*tmp);
-               if (!strncmp (value, "Version=", 8)) {
+               if (!g_ascii_strncasecmp (value, "Version=", 8)) {
                        if (sscanf (value + 8, "%u.%u.%u.%u",
                                    &major, &minor, &build, &revision) != 4) {
                                g_strfreev (parts);
@@ -798,62 +930,33 @@ get_info_from_assembly_name (MonoString *assRef, MonoAssemblyName *aname)
                        continue;
                }
 
-               if (!strncmp (value, "Culture=", 8)) {
-                       /* g_print ("Culture: %s\n", aname->culture); */
-                       aname->culture = g_strstrip (g_strdup (value + 8));
+               if (!g_ascii_strncasecmp (value, "Culture=", 8)) {
+                       gchar *t = g_strdup (value + 8);
+                       g_strchug (t);
+                       aname->culture = g_strdup (g_strchomp (t));
                        tmp++;
+                       g_free (t);
+                       if (g_strcasecmp (aname->culture, "neutral") == 0) {
+                               g_free ((void *) aname->culture);
+                               aname->culture = g_strdup ("");
+                       }
                        continue;
                }
 
-               if (!strncmp (value, "PublicKeyToken=", 15)) {
+               if (!g_ascii_strncasecmp (value, "PublicKeyToken=", 15)) {
                        tmp++;
                        value += 15;
-                       if (*value && strcmp (value, "null")) {
-                               gint i, len;
-                               gchar h, l;
-                               gchar *result;
-                               
-                               value = g_strstrip (g_strdup (value));
-                               len = strlen (value);
-                               if (len % 2) {
-                                       g_free (value);
-                                       g_strfreev (parts);
-                                       return FALSE;
-                               }
-                               
-                               aname->hash_len = len / 2;
-                               aname->hash_value = g_malloc0 (aname->hash_len);
-                               result = (gchar *) aname->hash_value;
-                               
-                               for (i = 0; i < len; i++) {
-                                       if (i % 2) {
-                                               l = g_ascii_xdigit_value (value [i]);
-                                               if (l == -1) {
-                                                       g_free (value);
-                                                       g_strfreev (parts);
-                                                       return FALSE;
-                                               }
-                                               result [i / 2] = (h * 16) + l;
-                                       } else {
-                                               h = g_ascii_xdigit_value (value [i]);
-                                               if (h == -1) {
-                                                       g_free (value);
-                                                       g_strfreev (parts);
-                                                       return FALSE;
-                                               }
-                                       }
-                               }
-                               g_free (value);
-
-                               /*
-                               g_print ("PublicKeyToken: ");
-                               for (i = 0; i < aname->hash_len; i++) {
-                                       g_print ("%x", 0x00FF & aname->hash_value [i]); 
-                               }
-                               g_print ("\n");
-                               */
+                       if (*value && strncmp (value, "null", 4)) {
+                               gchar *t = g_strdup (value);
+                               g_strchug (t);
+                               g_strlcpy (aname->public_key_token, g_strchomp (value), MONO_PUBLIC_KEY_TOKEN_LENGTH);
+                               g_free (t);
                        }
+                       continue;
                }
+
+               g_strfreev (parts);
+               return FALSE;
        }
 
        g_strfreev (parts);
@@ -866,6 +969,7 @@ ves_icall_System_AppDomain_LoadAssemblyRaw (MonoAppDomain *ad,
                                                                                        MonoArray *raw_symbol_store, MonoObject *evidence)
 {
        MonoAssembly *ass;
+       MonoReflectionAssembly *refass = NULL;
        MonoDomain *domain = ad->data;
        MonoImageOpenStatus status;
        guint32 raw_assembly_len = mono_array_length (raw_assembly);
@@ -887,7 +991,9 @@ ves_icall_System_AppDomain_LoadAssemblyRaw (MonoAppDomain *ad,
                return NULL; 
        }
 
-       return mono_assembly_get_object (domain, ass); 
+       refass = mono_assembly_get_object (domain, ass);
+       refass->evidence = evidence;
+       return refass;
 }
 
 MonoReflectionAssembly *
@@ -901,8 +1007,6 @@ ves_icall_System_AppDomain_LoadAssembly (MonoAppDomain *ad,  MonoString *assRef,
 
        MONO_ARCH_SAVE_REGS;
 
-       /* FIXME : examine evidence? */
-
        g_assert (assRef != NULL);
 
        if (!get_info_from_assembly_name (assRef, &aname)) {
@@ -923,10 +1027,11 @@ ves_icall_System_AppDomain_LoadAssembly (MonoAppDomain *ad,  MonoString *assRef,
                mono_raise_exception (exc);
        }
 
-       if (refass != NULL)
-               return refass;
+       if (refass == NULL)
+               refass = mono_assembly_get_object (domain, ass);
 
-       return mono_assembly_get_object (domain, ass);
+       refass->evidence = evidence;
+       return refass;
 }
 
 void
@@ -941,7 +1046,7 @@ ves_icall_System_AppDomain_InternalUnload (gint32 domain_id)
                mono_raise_exception (exc);
        }
        
-       if (domain == mono_root_domain) {
+       if (domain == mono_get_root_domain ()) {
                mono_raise_exception (mono_get_exception_cannot_unload_appdomain ("The default appdomain can not be unloaded."));
                return;
        }
@@ -950,7 +1055,7 @@ ves_icall_System_AppDomain_InternalUnload (gint32 domain_id)
         * Unloading seems to cause problems when running NUnit/NAnt, hence
         * this workaround.
         */
-       if (getenv ("MONO_NO_UNLOAD"))
+       if (g_getenv ("MONO_NO_UNLOAD"))
                return;
 
        mono_domain_unload (domain);
@@ -976,6 +1081,7 @@ ves_icall_System_AppDomain_ExecuteAssembly (MonoAppDomain *ad, MonoString *file,
        MonoMethod *method;
        char *filename;
        gint32 res;
+       MonoReflectionAssembly *refass;
 
        MONO_ARCH_SAVE_REGS;
 
@@ -983,10 +1089,8 @@ ves_icall_System_AppDomain_ExecuteAssembly (MonoAppDomain *ad, MonoString *file,
        assembly = mono_assembly_open (filename, NULL);
        g_free (filename);
 
-       if (!assembly) {
-               mono_raise_exception ((MonoException *)mono_exception_from_name (
-                       mono_defaults.corlib, "System.IO", "FileNotFoundException"));
-       }
+       if (!assembly)
+               mono_raise_exception (mono_get_exception_file_not_found (file));
 
        image = assembly->image;
 
@@ -998,6 +1102,9 @@ ves_icall_System_AppDomain_ExecuteAssembly (MonoAppDomain *ad, MonoString *file,
        if (!args)
                args = (MonoArray *) mono_array_new (ad->data, mono_defaults.string_class, 0);
 
+       refass = mono_assembly_get_object (ad->data, assembly);
+       refass->evidence = evidence;
+
        res = mono_runtime_exec_main (method, (MonoArray *)args, NULL);
 
        return res;
@@ -1095,13 +1202,14 @@ ves_icall_System_AppDomain_InternalSetContext (MonoAppContext *mc)
        MONO_ARCH_SAVE_REGS;
 
        mono_context_set (mc);
-       
+
        return old_context;
 }
 
 MonoString *
 ves_icall_System_AppDomain_InternalGetProcessGuid (MonoString* newguid)
 {
+       MonoDomain* mono_root_domain = mono_get_root_domain ();
        mono_domain_lock (mono_root_domain);
        if (process_guid_set) {
                mono_domain_unlock (mono_root_domain);
@@ -1162,13 +1270,15 @@ unload_thread_main (void *arg)
 
        /* Clear references to our vtables in class->cached_vtable */
        mono_domain_lock (domain);
-       mono_g_hash_table_foreach (domain->class_vtable_hash, clear_cached_vtable,
-                                                          domain);
+       g_hash_table_foreach (domain->class_vtable_hash, clear_cached_vtable,
+                                                 domain);
        mono_domain_unlock (domain);
 
+       mono_threads_clear_cached_culture (domain);
+
        domain->state = MONO_APPDOMAIN_UNLOADED;
 
-       //printf ("UNLOADED %s.\n", domain->friendly_name);
+       /* printf ("UNLOADED %s.\n", domain->friendly_name); */
 
        mono_domain_free (domain, FALSE);
 
@@ -1192,14 +1302,14 @@ static void
 mono_domain_unload (MonoDomain *domain)
 {
        HANDLE thread_handle;
-       guint32 tid;
-       gboolean ret;
+       guint32 tid, res;
        MonoAppDomainState prev_state;
        MonoMethod *method;
        MonoObject *exc;
        unload_data thread_data;
+       MonoDomain *caller_domain = mono_domain_get ();
 
-       //printf ("UNLOAD STARTING FOR %s.\n", domain->friendly_name);
+       /* printf ("UNLOAD STARTING FOR %s (%p) IN THREAD 0x%x.\n", domain->friendly_name, domain, GetCurrentThreadId ()); */
 
        /* Atomically change our state to UNLOADING */
        prev_state = InterlockedCompareExchange (&domain->state,
@@ -1215,8 +1325,9 @@ mono_domain_unload (MonoDomain *domain)
                        g_assert_not_reached ();
        }
 
+       mono_domain_set (domain, FALSE);
        /* Notify OnDomainUnload listeners */
-       method = look_for_method_by_name (domain->domain->mbr.obj.vtable->klass, "DoDomainUnload");     
+       method = mono_class_get_method_from_name (domain->domain->mbr.obj.vtable->klass, "DoDomainUnload", -1); 
        g_assert (method);
 
        exc = NULL;
@@ -1224,6 +1335,7 @@ mono_domain_unload (MonoDomain *domain)
        if (exc) {
                /* Roll back the state change */
                domain->state = MONO_APPDOMAIN_CREATED;
+               mono_domain_set (caller_domain, FALSE);
                mono_raise_exception ((MonoException*)exc);
        }
 
@@ -1242,21 +1354,36 @@ mono_domain_unload (MonoDomain *domain)
 #if 0
        thread_handle = CreateThread (NULL, 0, unload_thread_main, &thread_data, 0, &tid);
 #else
-        thread_handle = CreateThread (NULL, 0, unload_thread_main, &thread_data, CREATE_SUSPENDED, &tid);
+#if defined(PLATFORM_WIN32) && defined (HAVE_BOEHM_GC)
+       thread_handle = GC_CreateThread (NULL, 0, unload_thread_main, &thread_data, CREATE_SUSPENDED, &tid);
+#else
+       thread_handle = CreateThread (NULL, 0, unload_thread_main, &thread_data, CREATE_SUSPENDED, &tid);
+#endif
        ResumeThread (thread_handle);
 #endif
-       ret = WaitForSingleObject (thread_handle, INFINITE);
+
+       /* Wait for the thread */       
+       while ((res = WaitForSingleObjectEx (thread_handle, INFINITE, TRUE) == WAIT_IO_COMPLETION)) {
+               if (mono_thread_has_appdomain_ref (mono_thread_current (), domain) && (mono_thread_interruption_requested ()))
+                       /* The unload thread tries to abort us */
+                       /* The icall wrapper will execute the abort */
+                       return;
+       }
+
+       mono_domain_set (caller_domain, FALSE);
 
        if (thread_data.failure_reason) {
                MonoException *ex;
 
-               ex = mono_get_exception_cannot_unload_appdomain (thread_data.failure_reason);
                /* Roll back the state change */
                domain->state = MONO_APPDOMAIN_CREATED;
 
                g_warning (thread_data.failure_reason);
 
                g_free (thread_data.failure_reason);
+               thread_data.failure_reason = NULL;
+
+               ex = mono_get_exception_cannot_unload_appdomain (thread_data.failure_reason);
 
                mono_raise_exception (ex);
        }