mono/metadata/appdomain.c

   1 /*
   2  * appdomain.c: AppDomain functions
   3  *
   4  * Authors:
   5  *      Dietmar Maurer (dietmar@ximian.com)
   6  *      Patrik Torstensson
   7  *      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   8  *
   9  * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
  10  * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
  11  */
  12 #undef ASSEMBLY_LOAD_DEBUG
  13 #include <config.h>
  14 #include <glib.h>
  15 #include <string.h>
  16 #ifdef HAVE_UNISTD_H
  17 #include <unistd.h>
  18 #endif
  19 #include <errno.h>
  20 #include <sys/stat.h>
  21 #include <sys/types.h>
  22 #ifdef HAVE_SYS_TIME_H
  23 #include <sys/time.h>
  24 #endif
  25 #ifdef HAVE_UTIME_H
  26 #include <utime.h>
  27 #else
  28 #ifdef HAVE_SYS_UTIME_H
  29 #include <sys/utime.h>
  30 #endif
  31 #endif
  32
  33 #include <mono/metadata/gc-internal.h>
  34 #include <mono/metadata/object.h>
  35 #include <mono/metadata/domain-internals.h>
  36 #include "mono/metadata/metadata-internals.h"
  37 #include <mono/metadata/assembly.h>
  38 #include <mono/metadata/exception.h>
  39 #include <mono/metadata/threads.h>
  40 #include <mono/metadata/socket-io.h>
  41 #include <mono/metadata/tabledefs.h>
  42 #include <mono/metadata/gc-internal.h>
  43 #include <mono/metadata/mono-gc.h>
  44 #include <mono/metadata/marshal.h>
  45 #include <mono/metadata/monitor.h>
  46 #include <mono/metadata/threadpool.h>
  47 #include <mono/metadata/mono-debug.h>
  48 #include <mono/metadata/mono-debug-debugger.h>
  49 #include <mono/metadata/attach.h>
  50 #include <mono/metadata/file-io.h>
  51 #include <mono/metadata/lock-tracer.h>
  52 #include <mono/metadata/console-io.h>
  53 #include <mono/metadata/threads-types.h>
  54 #include <mono/metadata/tokentype.h>
  55 #include <mono/utils/mono-uri.h>
  56 #include <mono/utils/mono-logger.h>
  57 #include <mono/utils/mono-path.h>
  58 #include <mono/utils/mono-stdlib.h>
  59 #include <mono/utils/mono-io-portability.h>
  60 #ifdef PLATFORM_WIN32
  61 #include <direct.h>
  62 #endif
  63
  64 /*
  65  * This is the version number of the corlib-runtime interface. When
  66  * making changes to this interface (by changing the layout
  67  * of classes the runtime knows about, changing icall signature or
  68  * semantics etc), increment this variable. Also increment the
  69  * pair of this variable in mscorlib in:
  70  *       mcs/class/mscorlib/System/Environment.cs
  71  *
  72  * Changes which are already detected at runtime, like the addition
  73  * of icalls, do not require an increment.
  74  */
  75 #define MONO_CORLIB_VERSION 76
  76
  77 typedef struct
  78 {
  79         int runtime_count;
  80         int assemblybinding_count;
  81         MonoDomain *domain;
  82 } RuntimeConfig;
  83
  84 CRITICAL_SECTION mono_delegate_section;
  85
  86 #ifdef _EGLIB_MAJOR
  87 /* Need to lock here because EGLIB has locking defined as no-ops, we can not depend on mono_strtod do the right locking */
  88 /* Ideally this will be fixed in eglib */
  89 CRITICAL_SECTION mono_strtod_mutex;
  90 #endif
  91
  92
  93 static gunichar2 process_guid [36];
  94 static gboolean process_guid_set = FALSE;
  95
  96 static gboolean shutting_down = FALSE;
  97
  98 static gboolean no_exec = FALSE;
  99
 100 static MonoAssembly *
 101 mono_domain_assembly_preload (MonoAssemblyName *aname,
 102                               gchar **assemblies_path,
 103                               gpointer user_data);
 104
 105 static MonoAssembly *
 106 mono_domain_assembly_search (MonoAssemblyName *aname,
 107                                                          gpointer user_data);
 108
 109 static MonoAssembly *
 110 mono_domain_assembly_postload_search (MonoAssemblyName *aname,
 111                                                                           gpointer user_data);
 112
 113 static void
 114 mono_domain_fire_assembly_load (MonoAssembly *assembly, gpointer user_data);
 115
 116 static void
 117 add_assemblies_to_domain (MonoDomain *domain, MonoAssembly *ass, GHashTable *hash);
 118
 119 static MonoAppDomain *
 120 mono_domain_create_appdomain_internal (char *friendly_name, MonoAppDomainSetup *setup);
 121
 122 static char *
 123 get_shadow_assembly_location_base (MonoDomain *domain);
 124
 125 static MonoLoadFunc load_function = NULL;
 126
 127 void
 128 mono_install_runtime_load (MonoLoadFunc func)
 129 {
 130         load_function = func;
 131 }
 132
 133 MonoDomain*
 134 mono_runtime_load (const char *filename, const char *runtime_version)
 135 {
 136         g_assert (load_function);
 137         return load_function (filename, runtime_version);
 138 }
 139
 140 /*
 141  * mono_runtime_set_no_exec:
 142  *
 143  *   Instructs the runtime to operate in static mode, i.e. avoid/do not allow managed
 144  * code execution. This is useful for running the AOT compiler on platforms which
 145  * allow full-aot execution only.
 146  * This should be called before mono_runtime_init ().
 147  */
 148 void
 149 mono_runtime_set_no_exec (gboolean val)
 150 {
 151         no_exec = val;
 152 }
 153
 154 gboolean
 155 mono_runtime_get_no_exec (void)
 156 {
 157         return no_exec;
 158 }
 159
 160 /**
 161  * mono_runtime_init:
 162  * @domain: domain returned by mono_init ()
 163  *
 164  * Initialize the core AppDomain: this function will run also some
 165  * IL initialization code, so it needs the execution engine to be fully
 166  * operational.
 167  *
 168  * AppDomain.SetupInformation is set up in mono_runtime_exec_main, where
 169  * we know the entry_assembly.
 170  *
 171  */
 172 void
 173 mono_runtime_init (MonoDomain *domain, MonoThreadStartCB start_cb,
 174                    MonoThreadAttachCB attach_cb)
 175 {
 176         MonoAppDomainSetup *setup;
 177         MonoAppDomain *ad;
 178         MonoClass *class;
 179         MonoString *arg;
 180
 181         mono_portability_helpers_init ();
 182
 183         mono_gc_base_init ();
 184         mono_monitor_init ();
 185         mono_thread_pool_init ();
 186         mono_marshal_init ();
 187
 188         mono_install_assembly_preload_hook (mono_domain_assembly_preload, GUINT_TO_POINTER (FALSE));
 189         mono_install_assembly_refonly_preload_hook (mono_domain_assembly_preload, GUINT_TO_POINTER (TRUE));
 190         mono_install_assembly_search_hook (mono_domain_assembly_search, GUINT_TO_POINTER (FALSE));
 191         mono_install_assembly_refonly_search_hook (mono_domain_assembly_search, GUINT_TO_POINTER (TRUE));
 192         mono_install_assembly_postload_search_hook (mono_domain_assembly_postload_search, GUINT_TO_POINTER (FALSE));
 193         mono_install_assembly_postload_refonly_search_hook (mono_domain_assembly_postload_search, GUINT_TO_POINTER (TRUE));
 194         mono_install_assembly_load_hook (mono_domain_fire_assembly_load, NULL);
 195         mono_install_lookup_dynamic_token (mono_reflection_lookup_dynamic_token);
 196
 197         mono_thread_init (start_cb, attach_cb);
 198
 199         class = mono_class_from_name (mono_defaults.corlib, "System", "AppDomainSetup");
 200         setup = (MonoAppDomainSetup *) mono_object_new (domain, class);
 201
 202         class = mono_class_from_name (mono_defaults.corlib, "System", "AppDomain");
 203         ad = (MonoAppDomain *) mono_object_new (domain, class);
 204         ad->data = domain;
 205         domain->domain = ad;
 206         domain->setup = setup;
 207
 208         InitializeCriticalSection (&mono_delegate_section);
 209
 210 #ifdef _EGLIB_MAJOR
 211         /* Needed until EGLIB is fixed #464316 */
 212         InitializeCriticalSection (&mono_strtod_mutex);
 213 #endif
 214
 215         mono_thread_attach (domain);
 216         mono_context_init (domain);
 217         mono_context_set (domain->default_context);
 218
 219         mono_type_initialization_init ();
 220
 221         if (!mono_runtime_get_no_exec ()) {
 222                 /*
 223                  * Create an instance early since we can't do it when there is no memory.
 224                  */
 225                 arg = mono_string_new (domain, "Out of memory");
 226                 domain->out_of_memory_ex = mono_exception_from_name_two_strings (mono_defaults.corlib, "System", "OutOfMemoryException", arg, NULL);
 227
 228                 /*
 229                  * These two are needed because the signal handlers might be executing on
 230                  * an alternate stack, and Boehm GC can't handle that.
 231                  */
 232                 arg = mono_string_new (domain, "A null value was found where an object instance was required");
 233                 domain->null_reference_ex = mono_exception_from_name_two_strings (mono_defaults.corlib, "System", "NullReferenceException", arg, NULL);
 234                 arg = mono_string_new (domain, "The requested operation caused a stack overflow.");
 235                 domain->stack_overflow_ex = mono_exception_from_name_two_strings (mono_defaults.corlib, "System", "StackOverflowException", arg, NULL);
 236         }
 237
 238         /* GC init has to happen after thread init */
 239         mono_gc_init ();
 240
 241 #ifndef DISABLE_SOCKETS
 242         mono_network_init ();
 243 #endif
 244
 245         mono_console_init ();
 246         mono_attach_init ();
 247
 248         mono_locks_tracer_init ();
 249
 250         /* mscorlib is loaded before we install the load hook */
 251         mono_domain_fire_assembly_load (mono_defaults.corlib->assembly, NULL);
 252
 253         return;
 254 }
 255
 256 static int
 257 mono_get_corlib_version (void)
 258 {
 259         MonoClass *klass;
 260         MonoClassField *field;
 261         MonoObject *value;
 262
 263         klass = mono_class_from_name (mono_defaults.corlib, "System", "Environment");
 264         mono_class_init (klass);
 265         field = mono_class_get_field_from_name (klass, "mono_corlib_version");
 266         if (!field)
 267                 return -1;
 268         if (! (field->type->attrs & FIELD_ATTRIBUTE_STATIC))
 269                 return -1;
 270         value = mono_field_get_value_object (mono_domain_get (), field, NULL);
 271         return *(gint32*)((gchar*)value + sizeof (MonoObject));
 272 }
 273
 274 const char*
 275 mono_check_corlib_version (void)
 276 {
 277         int version = mono_get_corlib_version ();
 278         if (version != MONO_CORLIB_VERSION)
 279                 return g_strdup_printf ("expected corlib version %d, found %d.", MONO_CORLIB_VERSION, version);
 280         else
 281                 return NULL;
 282 }
 283
 284 void
 285 mono_context_init (MonoDomain *domain)
 286 {
 287         MonoClass *class;
 288         MonoAppContext *context;
 289
 290         class = mono_class_from_name (mono_defaults.corlib, "System.Runtime.Remoting.Contexts", "Context");
 291         context = (MonoAppContext *) mono_object_new (domain, class);
 292         context->domain_id = domain->domain_id;
 293         context->context_id = 0;
 294         domain->default_context = context;
 295 }
 296
 297 /**
 298  * mono_runtime_cleanup:
 299  * @domain: unused.
 300  *
 301  * Internal routine.
 302  *
 303  * This must not be called while there are still running threads executing
 304  * managed code.
 305  */
 306 void
 307 mono_runtime_cleanup (MonoDomain *domain)
 308 {
 309         shutting_down = TRUE;
 310
 311         mono_attach_cleanup ();
 312
 313         /* This ends up calling any pending pending (for at most 2 seconds) */
 314         mono_gc_cleanup ();
 315
 316         mono_thread_cleanup ();
 317
 318 #ifndef DISABLE_SOCKETS
 319         mono_network_cleanup ();
 320 #endif
 321         mono_marshal_cleanup ();
 322
 323         mono_type_initialization_cleanup ();
 324
 325         mono_monitor_cleanup ();
 326
 327 #ifndef PLATFORM_WIN32
 328         _wapi_cleanup ();
 329 #endif
 330 }
 331
 332 static MonoDomainFunc quit_function = NULL;
 333
 334 void
 335 mono_install_runtime_cleanup (MonoDomainFunc func)
 336 {
 337         quit_function = func;
 338 }
 339
 340 void
 341 mono_runtime_quit ()
 342 {
 343         if (quit_function != NULL)
 344                 quit_function (mono_get_root_domain (), NULL);
 345 }
 346
 347 /**
 348  * mono_runtime_set_shutting_down:
 349  *
 350  * Invoked by System.Environment.Exit to flag that the runtime
 351  * is shutting down.
 352  */
 353 void
 354 mono_runtime_set_shutting_down (void)
 355 {
 356         shutting_down = TRUE;
 357 }
 358
 359 /**
 360  * mono_runtime_is_shutting_down:
 361  *
 362  * Returns whether the runtime has been flagged for shutdown.
 363  *
 364  * This is consumed by the P:System.Environment.HasShutdownStarted
 365  * property.
 366  *
 367  */
 368 gboolean
 369 mono_runtime_is_shutting_down (void)
 370 {
 371         return shutting_down;
 372 }
 373
 374 /**
 375  * mono_domain_create_appdomain:
 376  * @friendly_name: The friendly name of the appdomain to create
 377  * @configuration_file: The configuration file to initialize the appdomain with
 378  *
 379  * Returns a MonoDomain initialized with the appdomain
 380  */
 381 MonoDomain *
 382 mono_domain_create_appdomain (char *friendly_name, char *configuration_file)
 383 {
 384         MonoAppDomain *ad;
 385         MonoAppDomainSetup *setup;
 386         MonoClass *class;
 387
 388         class = mono_class_from_name (mono_defaults.corlib, "System", "AppDomainSetup");
 389         setup = (MonoAppDomainSetup *) mono_object_new (mono_domain_get (), class);
 390         setup->configuration_file = configuration_file != NULL ? mono_string_new (mono_domain_get (), configuration_file) : NULL;
 391
 392         ad = mono_domain_create_appdomain_internal (friendly_name, setup);
 393
 394         return mono_domain_from_appdomain (ad);
 395 }
 396
 397 static MonoAppDomain *
 398 mono_domain_create_appdomain_internal (char *friendly_name, MonoAppDomainSetup *setup)
 399 {
 400         MonoClass *adclass;
 401         MonoAppDomain *ad;
 402         MonoDomain *data;
 403         char *shadow_location;
 404
 405         MONO_ARCH_SAVE_REGS;
 406
 407         adclass = mono_class_from_name (mono_defaults.corlib, "System", "AppDomain");
 408
 409         /* FIXME: pin all those objects */
 410         data = mono_domain_create();
 411
 412         ad = (MonoAppDomain *) mono_object_new (data, adclass);
 413         ad->data = data;
 414         data->domain = ad;
 415         data->setup = setup;
 416         data->friendly_name = g_strdup (friendly_name);
 417         // FIXME: The ctor runs in the current domain
 418         // FIXME: Initialize null_reference_ex and stack_overflow_ex
 419         data->out_of_memory_ex = mono_exception_from_name_domain (data, mono_defaults.corlib, "System", "OutOfMemoryException");
 420
 421         if (!setup->application_base) {
 422                 /* Inherit from the root domain since MS.NET does this */
 423                 MonoDomain *root = mono_get_root_domain ();
 424                 if (root->setup->application_base)
 425                         MONO_OBJECT_SETREF (setup, application_base, mono_string_new_utf16 (data, mono_string_chars (root->setup->application_base), mono_string_length (root->setup->application_base)));
 426         }
 427
 428         mono_context_init (data);
 429
 430         mono_set_private_bin_path_from_config (data);
 431
 432         add_assemblies_to_domain (data, mono_defaults.corlib->assembly, NULL);
 433
 434 #ifndef DISABLE_SHADOW_COPY
 435         shadow_location = get_shadow_assembly_location_base (data);
 436         mono_debugger_event_create_appdomain (data, shadow_location);
 437         g_free (shadow_location);
 438 #endif
 439
 440         return ad;
 441 }
 442
 443 /**
 444  * mono_domain_has_type_resolve:
 445  * @domain: application domains being looked up
 446  *
 447  * Returns true if the AppDomain.TypeResolve field has been
 448  * set.
 449  */
 450 gboolean
 451 mono_domain_has_type_resolve (MonoDomain *domain)
 452 {
 453         static MonoClassField *field = NULL;
 454         MonoObject *o;
 455
 456         if (field == NULL) {
 457                 field = mono_class_get_field_from_name (mono_defaults.appdomain_class, "TypeResolve");
 458                 g_assert (field);
 459         }
 460
 461         mono_field_get_value ((MonoObject*)(domain->domain), field, &o);
 462         return o != NULL;
 463 }
 464
 465 /**
 466  * mono_domain_try_type_resolve:
 467  * @domain: application domainwhere the name where the type is going to be resolved
 468  * @name: the name of the type to resolve or NULL.
 469  * @tb: A System.Reflection.Emit.TypeBuilder, used if name is NULL.
 470  *
 471  * This routine invokes the internal System.AppDomain.DoTypeResolve and returns
 472  * the assembly that matches name.
 473  *
 474  * If @name is null, the value of ((TypeBuilder)tb).FullName is used instead
 475  *
 476  * Returns: A MonoReflectionAssembly or NULL if not found
 477  */
 478 MonoReflectionAssembly *
 479 mono_domain_try_type_resolve (MonoDomain *domain, char *name, MonoObject *tb)
 480 {
 481         MonoClass *klass;
 482         void *params [1];
 483         static MonoMethod *method = NULL;
 484
 485         g_assert (domain != NULL && ((name != NULL) || (tb != NULL)));
 486
 487         if (method == NULL) {
 488                 klass = domain->domain->mbr.obj.vtable->klass;
 489                 g_assert (klass);
 490
 491                 method = mono_class_get_method_from_name (klass, "DoTypeResolve", -1);
 492                 if (method == NULL) {
 493                         g_warning ("Method AppDomain.DoTypeResolve not found.\n");
 494                         return NULL;
 495                 }
 496         }
 497
 498         if (name)
 499                 *params = (MonoObject*)mono_string_new (mono_domain_get (), name);
 500         else
 501                 *params = tb;
 502         return (MonoReflectionAssembly *) mono_runtime_invoke (method, domain->domain, params, NULL);
 503 }
 504
 505 /**
 506  * mono_domain_owns_vtable_slot:
 507  *
 508  *  Returns whenever VTABLE_SLOT is inside a vtable which belongs to DOMAIN.
 509  */
 510 gboolean
 511 mono_domain_owns_vtable_slot (MonoDomain *domain, gpointer vtable_slot)
 512 {
 513         gboolean res;
 514
 515         mono_domain_lock (domain);
 516         res = mono_mempool_contains_addr (domain->mp, vtable_slot);
 517         mono_domain_unlock (domain);
 518         return res;
 519 }
 520
 521 /**
 522  * mono_domain_set:
 523  * @domain: domain
 524  * @force: force setting.
 525  *
 526  * Set the current appdomain to @domain. If @force is set, set it even
 527  * if it is being unloaded.
 528  *
 529  * Returns:
 530  *   TRUE on success;
 531  *   FALSE if the domain is unloaded
 532  */
 533 gboolean
 534 mono_domain_set (MonoDomain *domain, gboolean force)
 535 {
 536         if (!force && domain->state == MONO_APPDOMAIN_UNLOADED)
 537                 return FALSE;
 538
 539         mono_domain_set_internal (domain);
 540
 541         return TRUE;
 542 }
 543
 544 MonoObject *
 545 ves_icall_System_AppDomain_GetData (MonoAppDomain *ad, MonoString *name)
 546 {
 547         MonoDomain *add;
 548         MonoObject *o;
 549         char *str;
 550
 551         MONO_ARCH_SAVE_REGS;
 552
 553         g_assert (ad != NULL);
 554         add = ad->data;
 555         g_assert (add != NULL);
 556
 557         if (name == NULL)
 558                 mono_raise_exception (mono_get_exception_argument_null ("name"));
 559
 560         str = mono_string_to_utf8 (name);
 561
 562         mono_domain_lock (add);
 563
 564         if (!strcmp (str, "APPBASE"))
 565                 o = (MonoObject *)add->setup->application_base;
 566         else if (!strcmp (str, "APP_CONFIG_FILE"))
 567                 o = (MonoObject *)add->setup->configuration_file;
 568         else if (!strcmp (str, "DYNAMIC_BASE"))
 569                 o = (MonoObject *)add->setup->dynamic_base;
 570         else if (!strcmp (str, "APP_NAME"))
 571                 o = (MonoObject *)add->setup->application_name;
 572         else if (!strcmp (str, "CACHE_BASE"))
 573                 o = (MonoObject *)add->setup->cache_path;
 574         else if (!strcmp (str, "PRIVATE_BINPATH"))
 575                 o = (MonoObject *)add->setup->private_bin_path;
 576         else if (!strcmp (str, "BINPATH_PROBE_ONLY"))
 577                 o = (MonoObject *)add->setup->private_bin_path_probe;
 578         else if (!strcmp (str, "SHADOW_COPY_DIRS"))
 579                 o = (MonoObject *)add->setup->shadow_copy_directories;
 580         else if (!strcmp (str, "FORCE_CACHE_INSTALL"))
 581                 o = (MonoObject *)add->setup->shadow_copy_files;
 582         else
 583                 o = mono_g_hash_table_lookup (add->env, name);
 584
 585         mono_domain_unlock (add);
 586         g_free (str);
 587
 588         if (!o)
 589                 return NULL;
 590
 591         return o;
 592 }
 593
 594 void
 595 ves_icall_System_AppDomain_SetData (MonoAppDomain *ad, MonoString *name, MonoObject *data)
 596 {
 597         MonoDomain *add;
 598
 599         MONO_ARCH_SAVE_REGS;
 600
 601         g_assert (ad != NULL);
 602         add = ad->data;
 603         g_assert (add != NULL);
 604
 605         if (name == NULL)
 606                 mono_raise_exception (mono_get_exception_argument_null ("name"));
 607
 608         mono_domain_lock (add);
 609
 610         mono_g_hash_table_insert (add->env, name, data);
 611
 612         mono_domain_unlock (add);
 613 }
 614
 615 MonoAppDomainSetup *
 616 ves_icall_System_AppDomain_getSetup (MonoAppDomain *ad)
 617 {
 618         MONO_ARCH_SAVE_REGS;
 619
 620         g_assert (ad != NULL);
 621         g_assert (ad->data != NULL);
 622
 623         return ad->data->setup;
 624 }
 625
 626 MonoString *
 627 ves_icall_System_AppDomain_getFriendlyName (MonoAppDomain *ad)
 628 {
 629         MONO_ARCH_SAVE_REGS;
 630
 631         g_assert (ad != NULL);
 632         g_assert (ad->data != NULL);
 633
 634         return mono_string_new (ad->data, ad->data->friendly_name);
 635 }
 636
 637 MonoAppDomain *
 638 ves_icall_System_AppDomain_getCurDomain ()
 639 {
 640         MonoDomain *add = mono_domain_get ();
 641
 642         MONO_ARCH_SAVE_REGS;
 643
 644         return add->domain;
 645 }
 646
 647 MonoAppDomain *
 648 ves_icall_System_AppDomain_getRootDomain ()
 649 {
 650         MonoDomain *root = mono_get_root_domain ();
 651
 652         MONO_ARCH_SAVE_REGS;
 653
 654         return root->domain;
 655 }
 656
 657 static char*
 658 get_attribute_value (const gchar **attribute_names,
 659                      const gchar **attribute_values,
 660                      const char *att_name)
 661 {
 662         int n;
 663         for (n = 0; attribute_names [n] != NULL; n++) {
 664                 if (strcmp (attribute_names [n], att_name) == 0)
 665                         return g_strdup (attribute_values [n]);
 666         }
 667         return NULL;
 668 }
 669
 670 static void
 671 start_element (GMarkupParseContext *context,
 672                const gchar         *element_name,
 673                const gchar        **attribute_names,
 674                const gchar        **attribute_values,
 675                gpointer             user_data,
 676                GError             **error)
 677 {
 678         RuntimeConfig *runtime_config = user_data;
 679
 680         if (strcmp (element_name, "runtime") == 0) {
 681                 runtime_config->runtime_count++;
 682                 return;
 683         }
 684
 685         if (strcmp (element_name, "assemblyBinding") == 0) {
 686                 runtime_config->assemblybinding_count++;
 687                 return;
 688         }
 689
 690         if (runtime_config->runtime_count != 1 || runtime_config->assemblybinding_count != 1)
 691                 return;
 692
 693         if (strcmp (element_name, "probing") != 0)
 694                 return;
 695
 696         g_free (runtime_config->domain->private_bin_path);
 697         runtime_config->domain->private_bin_path = get_attribute_value (attribute_names, attribute_values, "privatePath");
 698         if (runtime_config->domain->private_bin_path && !runtime_config->domain->private_bin_path [0]) {
 699                 g_free (runtime_config->domain->private_bin_path);
 700                 runtime_config->domain->private_bin_path = NULL;
 701                 return;
 702         }
 703 }
 704
 705 static void
 706 end_element (GMarkupParseContext *context,
 707              const gchar         *element_name,
 708              gpointer             user_data,
 709              GError             **error)
 710 {
 711         RuntimeConfig *runtime_config = user_data;
 712         if (strcmp (element_name, "runtime") == 0)
 713                 runtime_config->runtime_count--;
 714         else if (strcmp (element_name, "assemblyBinding") == 0)
 715                 runtime_config->assemblybinding_count--;
 716 }
 717
 718 static const GMarkupParser
 719 mono_parser = {
 720         start_element,
 721         end_element,
 722         NULL,
 723         NULL,
 724         NULL
 725 };
 726
 727 void
 728 mono_set_private_bin_path_from_config (MonoDomain *domain)
 729 {
 730         gchar *config_file, *text;
 731         gsize len;
 732         GMarkupParseContext *context;
 733         RuntimeConfig runtime_config;
 734
 735         if (!domain || !domain->setup || !domain->setup->configuration_file)
 736                 return;
 737
 738         config_file = mono_string_to_utf8 (domain->setup->configuration_file);
 739
 740         if (!g_file_get_contents (config_file, &text, &len, NULL)) {
 741                 g_free (config_file);
 742                 return;
 743         }
 744         g_free (config_file);
 745
 746         runtime_config.runtime_count = 0;
 747         runtime_config.assemblybinding_count = 0;
 748         runtime_config.domain = domain;
 749
 750         context = g_markup_parse_context_new (&mono_parser, 0, &runtime_config, NULL);
 751         if (g_markup_parse_context_parse (context, text, len, NULL))
 752                 g_markup_parse_context_end_parse (context, NULL);
 753         g_markup_parse_context_free (context);
 754         g_free (text);
 755 }
 756
 757 MonoAppDomain *
 758 ves_icall_System_AppDomain_createDomain (MonoString *friendly_name, MonoAppDomainSetup *setup)
 759 {
 760         char *fname = mono_string_to_utf8 (friendly_name);
 761         MonoAppDomain *ad = mono_domain_create_appdomain_internal (fname, setup);
 762
 763         g_free (fname);
 764
 765         return ad;
 766 }
 767
 768 MonoArray *
 769 ves_icall_System_AppDomain_GetAssemblies (MonoAppDomain *ad, MonoBoolean refonly)
 770 {
 771         MonoDomain *domain = ad->data;
 772         MonoAssembly* ass;
 773         static MonoClass *System_Reflection_Assembly;
 774         MonoArray *res;
 775         GSList *tmp;
 776         int i;
 777         GPtrArray *assemblies;
 778
 779         MONO_ARCH_SAVE_REGS;
 780
 781         if (!System_Reflection_Assembly)
 782                 System_Reflection_Assembly = mono_class_from_name (
 783                         mono_defaults.corlib, "System.Reflection", "Assembly");
 784
 785         /*
 786          * Make a copy of the list of assemblies because we can't hold the assemblies
 787          * lock while creating objects etc.
 788          */
 789         assemblies = g_ptr_array_new ();
 790         /* Need to skip internal assembly builders created by remoting */
 791         mono_domain_assemblies_lock (domain);
 792         for (tmp = domain->domain_assemblies; tmp; tmp = tmp->next) {
 793                 ass = tmp->data;
 794                 if (refonly != ass->ref_only)
 795                         continue;
 796                 if (ass->corlib_internal)
 797                         continue;
 798                 g_ptr_array_add (assemblies, ass);
 799         }
 800         mono_domain_assemblies_unlock (domain);
 801
 802         res = mono_array_new (domain, System_Reflection_Assembly, assemblies->len);
 803         for (i = 0; i < assemblies->len; ++i) {
 804                 ass = g_ptr_array_index (assemblies, i);
 805                 mono_array_setref (res, i, mono_assembly_get_object (domain, ass));
 806         }
 807
 808         g_ptr_array_free (assemblies, TRUE);
 809
 810         return res;
 811 }
 812
 813 MonoReflectionAssembly *
 814 mono_try_assembly_resolve (MonoDomain *domain, MonoString *fname, gboolean refonly)
 815 {
 816         MonoClass *klass;
 817         MonoMethod *method;
 818         MonoBoolean isrefonly;
 819         gpointer params [2];
 820
 821         g_assert (domain != NULL && fname != NULL);
 822
 823         klass = domain->domain->mbr.obj.vtable->klass;
 824         g_assert (klass);
 825
 826         method = mono_class_get_method_from_name (klass, "DoAssemblyResolve", -1);
 827         if (method == NULL) {
 828                 g_warning ("Method AppDomain.DoAssemblyResolve not found.\n");
 829                 return NULL;
 830         }
 831
 832         isrefonly = refonly ? 1 : 0;
 833         params [0] = fname;
 834         params [1] = &isrefonly;
 835         return (MonoReflectionAssembly *) mono_runtime_invoke (method, domain->domain, params, NULL);
 836 }
 837
 838 static MonoAssembly *
 839 mono_domain_assembly_postload_search (MonoAssemblyName *aname,
 840                                                                           gpointer user_data)
 841 {
 842         gboolean refonly = GPOINTER_TO_UINT (user_data);
 843         MonoReflectionAssembly *assembly;
 844         MonoDomain *domain = mono_domain_get ();
 845         char *aname_str;
 846
 847         aname_str = mono_stringify_assembly_name (aname);
 848
 849         /* FIXME: We invoke managed code here, so there is a potential for deadlocks */
 850         assembly = mono_try_assembly_resolve (domain, mono_string_new (domain, aname_str), refonly);
 851
 852         g_free (aname_str);
 853
 854         if (assembly)
 855                 return assembly->assembly;
 856         else
 857                 return NULL;
 858 }
 859
 860 /*
 861  * LOCKING: assumes assemblies_lock in the domain is already locked.
 862  */
 863 static void
 864 add_assemblies_to_domain (MonoDomain *domain, MonoAssembly *ass, GHashTable *ht)
 865 {
 866         gint i;
 867         GSList *tmp;
 868         gboolean destroy_ht = FALSE;
 869
 870         if (!ass->aname.name)
 871                 return;
 872
 873         if (!ht) {
 874                 ht = g_hash_table_new (mono_aligned_addr_hash, NULL);
 875                 destroy_ht = TRUE;
 876         }
 877
 878         /* FIXME: handle lazy loaded assemblies */
 879         for (tmp = domain->domain_assemblies; tmp; tmp = tmp->next) {
 880                 g_hash_table_insert (ht, tmp->data, tmp->data);
 881         }
 882         if (!g_hash_table_lookup (ht, ass)) {
 883                 mono_assembly_addref (ass);
 884                 g_hash_table_insert (ht, ass, ass);
 885                 domain->domain_assemblies = g_slist_prepend (domain->domain_assemblies, ass);
 886                 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Assembly %s %p added to domain %s, ref_count=%d\n", ass->aname.name, ass, domain->friendly_name, ass->ref_count);
 887         }
 888
 889         if (ass->image->references) {
 890                 for (i = 0; ass->image->references [i] != NULL; i++) {
 891                         if (ass->image->references [i] != REFERENCE_MISSING)
 892                                 if (!g_hash_table_lookup (ht, ass->image->references [i])) {
 893                                         add_assemblies_to_domain (domain, ass->image->references [i], ht);
 894                                 }
 895                 }
 896         }
 897         if (destroy_ht)
 898                 g_hash_table_destroy (ht);
 899 }
 900
 901 static void
 902 mono_domain_fire_assembly_load (MonoAssembly *assembly, gpointer user_data)
 903 {
 904         static MonoClassField *assembly_load_field;
 905         static MonoMethod *assembly_load_method;
 906         MonoDomain *domain = mono_domain_get ();
 907         MonoReflectionAssembly *ref_assembly;
 908         MonoClass *klass;
 909         gpointer load_value;
 910         void *params [1];
 911
 912         if (!domain->domain)
 913                 /* This can happen during startup */
 914                 return;
 915 #ifdef ASSEMBLY_LOAD_DEBUG
 916         fprintf (stderr, "Loading %s into domain %s\n", assembly->aname.name, domain->friendly_name);
 917 #endif
 918         klass = domain->domain->mbr.obj.vtable->klass;
 919
 920         mono_domain_assemblies_lock (domain);
 921         add_assemblies_to_domain (domain, assembly, NULL);
 922         mono_domain_assemblies_unlock (domain);
 923
 924         if (assembly_load_field == NULL) {
 925                 assembly_load_field = mono_class_get_field_from_name (klass, "AssemblyLoad");
 926                 g_assert (assembly_load_field);
 927         }
 928
 929         mono_field_get_value ((MonoObject*) domain->domain, assembly_load_field, &load_value);
 930         if (load_value == NULL) {
 931                 /* No events waiting to be triggered */
 932                 return;
 933         }
 934
 935         ref_assembly = mono_assembly_get_object (domain, assembly);
 936         g_assert (ref_assembly);
 937
 938         if (assembly_load_method == NULL) {
 939                 assembly_load_method = mono_class_get_method_from_name (klass, "DoAssemblyLoad", -1);
 940                 g_assert (assembly_load_method);
 941         }
 942
 943         *params = ref_assembly;
 944         mono_runtime_invoke (assembly_load_method, domain->domain, params, NULL);
 945 }
 946
 947 /*
 948  * LOCKING: Acquires the domain assemblies lock.
 949  */
 950 static void
 951 set_domain_search_path (MonoDomain *domain)
 952 {
 953         MonoAppDomainSetup *setup;
 954         gchar **tmp;
 955         gchar *search_path = NULL;
 956         gint i;
 957         gint npaths = 0;
 958         gchar **pvt_split = NULL;
 959         GError *error = NULL;
 960         gint appbaselen = -1;
 961
 962         /*
 963          * We use the low-level domain assemblies lock, since this is called from
 964          * assembly loads hooks, which means this thread might hold the loader lock.
 965          */
 966         mono_domain_assemblies_lock (domain);
 967
 968         if (!domain->setup) {
 969                 mono_domain_assemblies_unlock (domain);
 970                 return;
 971         }
 972
 973         if ((domain->search_path != NULL) && !domain->setup->path_changed) {
 974                 mono_domain_assemblies_unlock (domain);
 975                 return;
 976         }
 977         setup = domain->setup;
 978         if (!setup->application_base) {
 979                 mono_domain_assemblies_unlock (domain);
 980                 return; /* Must set application base to get private path working */
 981         }
 982
 983         npaths++;
 984
 985         if (setup->private_bin_path)
 986                 search_path = mono_string_to_utf8 (setup->private_bin_path);
 987
 988         if (domain->private_bin_path) {
 989                 if (search_path == NULL)
 990                         search_path = domain->private_bin_path;
 991                 else {
 992                         gchar *tmp2 = search_path;
 993                         search_path = g_strjoin (";", search_path, domain->private_bin_path, NULL);
 994                         g_free (tmp2);
 995                 }
 996         }
 997
 998         if (search_path) {
 999                 /*
1000                  * As per MSDN documentation, AppDomainSetup.PrivateBinPath contains a list of
1001                  * directories relative to ApplicationBase separated by semicolons (see
1002                  * http://msdn2.microsoft.com/en-us/library/system.appdomainsetup.privatebinpath.aspx)
1003                  * The loop below copes with the fact that some Unix applications may use ':' (or
1004                  * System.IO.Path.PathSeparator) as the path search separator. We replace it with
1005                  * ';' for the subsequent split.
1006                  *
1007                  * The issue was reported in bug #81446
1008                  */
1009
1010 #ifndef PLATFORM_WIN32
1011                 gint slen;
1012
1013                 slen = strlen (search_path);
1014                 for (i = 0; i < slen; i++)
1015                         if (search_path [i] == ':')
1016                                 search_path [i] = ';';
1017 #endif
1018
1019                 pvt_split = g_strsplit (search_path, ";", 1000);
1020                 g_free (search_path);
1021                 for (tmp = pvt_split; *tmp; tmp++, npaths++);
1022         }
1023
1024         if (!npaths) {
1025                 if (pvt_split)
1026                         g_strfreev (pvt_split);
1027                 /*
1028                  * Don't do this because the first time is called, the domain
1029                  * setup is not finished.
1030                  *
1031                  * domain->search_path = g_malloc (sizeof (char *));
1032                  * domain->search_path [0] = NULL;
1033                 */
1034                 mono_domain_assemblies_unlock (domain);
1035                 return;
1036         }
1037
1038         if (domain->search_path)
1039                 g_strfreev (domain->search_path);
1040
1041         domain->search_path = tmp = g_malloc ((npaths + 1) * sizeof (gchar *));
1042         tmp [npaths] = NULL;
1043
1044         *tmp = mono_string_to_utf8 (setup->application_base);
1045
1046         /* FIXME: is this needed? */
1047         if (strncmp (*tmp, "file://", 7) == 0) {
1048                 gchar *file = *tmp;
1049                 gchar *uri = *tmp;
1050                 gchar *tmpuri;
1051
1052                 if (uri [7] != '/')
1053                         uri = g_strdup_printf ("file:///%s", uri + 7);
1054
1055                 tmpuri = uri;
1056                 uri = mono_escape_uri_string (tmpuri);
1057                 *tmp = g_filename_from_uri (uri, NULL, &error);
1058                 g_free (uri);
1059
1060                 if (tmpuri != file)
1061                         g_free (tmpuri);
1062
1063                 if (error != NULL) {
1064                         g_warning ("%s\n", error->message);
1065                         g_error_free (error);
1066                         *tmp = file;
1067                 } else {
1068                         g_free (file);
1069                 }
1070         }
1071
1072         for (i = 1; pvt_split && i < npaths; i++) {
1073                 if (g_path_is_absolute (pvt_split [i - 1])) {
1074                         tmp [i] = g_strdup (pvt_split [i - 1]);
1075                 } else {
1076                         tmp [i] = g_build_filename (tmp [0], pvt_split [i - 1], NULL);
1077                 }
1078
1079                 if (strchr (tmp [i], '.')) {
1080                         gchar *reduced;
1081                         gchar *freeme;
1082
1083                         reduced = mono_path_canonicalize (tmp [i]);
1084                         if (appbaselen == -1)
1085                                 appbaselen = strlen (tmp [0]);
1086
1087                         if (strncmp (tmp [0], reduced, appbaselen)) {
1088                                 g_free (reduced);
1089                                 g_free (tmp [i]);
1090                                 tmp [i] = g_strdup ("");
1091                                 continue;
1092                         }
1093
1094                         freeme = tmp [i];
1095                         tmp [i] = reduced;
1096                         g_free (freeme);
1097                 }
1098         }
1099
1100         if (setup->private_bin_path_probe != NULL) {
1101                 g_free (tmp [0]);
1102                 tmp [0] = g_strdup ("");
1103         }
1104
1105         domain->setup->path_changed = FALSE;
1106
1107         g_strfreev (pvt_split);
1108
1109         mono_domain_assemblies_unlock (domain);
1110 }
1111
1112 #ifdef DISABLE_SHADOW_COPY
1113 gboolean
1114 mono_is_shadow_copy_enabled (MonoDomain *domain, const gchar *dir_name)
1115 {
1116         return FALSE;
1117 }
1118
1119 char *
1120 mono_make_shadow_copy (const char *filename)
1121 {
1122         return (char *) filename;
1123 }
1124 #else
1125 static gboolean
1126 shadow_copy_sibling (gchar *src, gint srclen, const char *extension, gchar *target, gint targetlen, gint tail_len)
1127 {
1128         guint16 *orig, *dest;
1129         gboolean copy_result;
1130
1131         strcpy (src + srclen - tail_len, extension);
1132         if (!g_file_test (src, G_FILE_TEST_IS_REGULAR))
1133                 return TRUE;
1134         orig = g_utf8_to_utf16 (src, strlen (src), NULL, NULL, NULL);
1135
1136         strcpy (target + targetlen - tail_len, extension);
1137         dest = g_utf8_to_utf16 (target, strlen (target), NULL, NULL, NULL);
1138
1139         DeleteFile (dest);
1140         copy_result = CopyFile (orig, dest, FALSE);
1141         g_free (orig);
1142         g_free (dest);
1143
1144         return copy_result;
1145 }
1146
1147 static gint32
1148 get_cstring_hash (const char *str)
1149 {
1150         int len, i;
1151         const char *p;
1152         gint32 h = 0;
1153
1154         if (!str || !str [0])
1155                 return 0;
1156
1157         len = strlen (str);
1158         p = str;
1159         for (i = 0; i < len; i++) {
1160                 h = (h << 5) - h + *p;
1161                 p++;
1162         }
1163
1164         return h;
1165 }
1166
1167 /*
1168  * Returned memory is malloc'd. Called must free it
1169  */
1170 static char *
1171 get_shadow_assembly_location_base (MonoDomain *domain)
1172 {
1173         MonoAppDomainSetup *setup;
1174         char *cache_path, *appname;
1175         char *userdir;
1176         char *location;
1177
1178         setup = domain->setup;
1179         if (setup->cache_path != NULL && setup->application_name != NULL) {
1180                 cache_path = mono_string_to_utf8 (setup->cache_path);
1181 #ifndef PLATFORM_WIN32
1182                 {
1183                         gint i;
1184                         for (i = strlen (cache_path) - 1; i >= 0; i--)
1185                                 if (cache_path [i] == '\\')
1186                                         cache_path [i] = '/';
1187                 }
1188 #endif
1189
1190                 appname = mono_string_to_utf8 (setup->application_name);
1191                 location = g_build_filename (cache_path, appname, "assembly", "shadow", NULL);
1192                 g_free (appname);
1193                 g_free (cache_path);
1194         } else {
1195                 userdir = g_strdup_printf ("%s-mono-cachepath", g_get_user_name ());
1196                 location = g_build_filename (g_get_tmp_dir (), userdir, "assembly", "shadow", NULL);
1197                 g_free (userdir);
1198         }
1199         return location;
1200 }
1201
1202 static char *
1203 get_shadow_assembly_location (const char *filename)
1204 {
1205         gint32 hash = 0, hash2 = 0;
1206         char name_hash [9];
1207         char path_hash [30];
1208         char *bname = g_path_get_basename (filename);
1209         char *dirname = g_path_get_dirname (filename);
1210         char *location, *tmploc;
1211         MonoDomain *domain = mono_domain_get ();
1212
1213         hash = get_cstring_hash (bname);
1214         hash2 = get_cstring_hash (dirname);
1215         g_snprintf (name_hash, sizeof (name_hash), "%08x", hash);
1216         g_snprintf (path_hash, sizeof (path_hash), "%08x_%08x_%08x", hash ^ hash2, hash2, domain->shadow_serial);
1217         tmploc = get_shadow_assembly_location_base (domain);
1218         location = g_build_filename (tmploc, name_hash, path_hash, bname, NULL);
1219         g_free (tmploc);
1220         g_free (bname);
1221         g_free (dirname);
1222         return location;
1223 }
1224
1225 static gboolean
1226 ensure_directory_exists (const char *filename)
1227 {
1228 #ifdef PLATFORM_WIN32
1229         gchar *dir_utf8 = g_path_get_dirname (filename);
1230         gunichar2 *p;
1231         gunichar2 *dir_utf16 = NULL;
1232         int retval;
1233
1234         if (!dir_utf8 || !dir_utf8 [0])
1235                 return FALSE;
1236
1237         dir_utf16 = g_utf8_to_utf16 (dir_utf8, strlen (dir_utf8), NULL, NULL, NULL);
1238         g_free (dir_utf8);
1239
1240         if (!dir_utf16)
1241                 return FALSE;
1242
1243         p = dir_utf16;
1244
1245         /* make life easy and only use one directory seperator */
1246         while (*p != '\0')
1247         {
1248                 if (*p == '/')
1249                         *p = '\\';
1250                 p++;
1251         }
1252
1253         p = dir_utf16;
1254
1255         /* get past C:\ )*/
1256         while (*p++ != '\\')
1257         {
1258         }
1259
1260         while (1) {
1261                 BOOL bRet = FALSE;
1262                 p = wcschr (p, '\\');
1263                 if (p)
1264                         *p = '\0';
1265                 retval = _wmkdir (dir_utf16);
1266                 if (retval != 0 && errno != EEXIST) {
1267                         g_free (dir_utf16);
1268                         return FALSE;
1269                 }
1270                 if (!p)
1271                         break;
1272                 *p++ = '\\';
1273         }
1274
1275         g_free (dir_utf16);
1276         return TRUE;
1277 #else
1278         char *p;
1279         gchar *dir = g_path_get_dirname (filename);
1280         int retval;
1281         struct stat sbuf;
1282
1283         if (!dir || !dir [0]) {
1284                 g_free (dir);
1285                 return FALSE;
1286         }
1287
1288         if (stat (dir, &sbuf) == 0 && S_ISDIR (sbuf.st_mode)) {
1289                 g_free (dir);
1290                 return TRUE;
1291         }
1292
1293         p = dir;
1294         while (*p == '/')
1295                 p++;
1296
1297         while (1) {
1298                 p = strchr (p, '/');
1299                 if (p)
1300                         *p = '\0';
1301                 retval = mkdir (dir, 0777);
1302                 if (retval != 0 && errno != EEXIST) {
1303                         g_free (dir);
1304                         return FALSE;
1305                 }
1306                 if (!p)
1307                         break;
1308                 *p++ = '/';
1309         }
1310
1311         g_free (dir);
1312         return TRUE;
1313 #endif
1314 }
1315
1316 static gboolean
1317 private_file_needs_copying (const char *src, struct stat *sbuf_src, char *dest)
1318 {
1319         struct stat sbuf_dest;
1320
1321         if (stat (src, sbuf_src) == -1 || stat (dest, &sbuf_dest) == -1)
1322                 return TRUE;
1323
1324         if (sbuf_src->st_mode == sbuf_dest.st_mode &&
1325             sbuf_src->st_size == sbuf_dest.st_size &&
1326             sbuf_src->st_mtime == sbuf_dest.st_mtime)
1327                 return FALSE;
1328
1329         return TRUE;
1330 }
1331
1332 static gboolean
1333 shadow_copy_create_ini (const char *shadow, const char *filename)
1334 {
1335         char *dir_name;
1336         char *ini_file;
1337         guint16 *u16_ini;
1338         gboolean result;
1339         guint32 n;
1340         HANDLE *handle;
1341         gchar *full_path;
1342
1343         dir_name = g_path_get_dirname (shadow);
1344         ini_file = g_build_filename (dir_name, "__AssemblyInfo__.ini", NULL);
1345         g_free (dir_name);
1346         if (g_file_test (ini_file, G_FILE_TEST_IS_REGULAR)) {
1347                 g_free (ini_file);
1348                 return TRUE;
1349         }
1350
1351         u16_ini = g_utf8_to_utf16 (ini_file, strlen (ini_file), NULL, NULL, NULL);
1352         g_free (ini_file);
1353         if (!u16_ini) {
1354                 return FALSE;
1355         }
1356         handle = CreateFile (u16_ini, GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE,
1357                                 NULL, CREATE_NEW, FileAttributes_Normal, NULL);
1358         g_free (u16_ini);
1359         if (handle == INVALID_HANDLE_VALUE) {
1360                 return FALSE;
1361         }
1362
1363         full_path = mono_path_resolve_symlinks (filename);
1364         result = WriteFile (handle, full_path, strlen (full_path), &n, NULL);
1365         g_free (full_path);
1366         CloseHandle (handle);
1367         return result;
1368 }
1369
1370 gboolean
1371 mono_is_shadow_copy_enabled (MonoDomain *domain, const gchar *dir_name)
1372 {
1373         const char *version;
1374         MonoAppDomainSetup *setup;
1375         gchar *all_dirs;
1376         gchar **dir_ptr;
1377         gchar **directories;
1378         gchar *shadow_status_string;
1379         gchar *base_dir;
1380         gboolean shadow_enabled;
1381         gboolean found = FALSE;
1382
1383         if (domain == NULL)
1384                 return FALSE;
1385
1386         setup = domain->setup;
1387         if (setup == NULL || setup->shadow_copy_files == NULL)
1388                 return FALSE;
1389
1390         version = mono_get_runtime_info ()->framework_version;
1391         shadow_status_string = mono_string_to_utf8 (setup->shadow_copy_files);
1392         /* For 1.x, not NULL is enough. In 2.0 it has to be "true" */
1393         shadow_enabled = (*version <= '1' || !g_ascii_strncasecmp (shadow_status_string, "true", 4));
1394         g_free (shadow_status_string);
1395         if (!shadow_enabled)
1396                 return FALSE;
1397
1398         if (setup->shadow_copy_directories == NULL)
1399                 return TRUE;
1400
1401         /* Is dir_name a shadow_copy destination already? */
1402         base_dir = get_shadow_assembly_location_base (domain);
1403         if (strstr (dir_name, base_dir)) {
1404                 g_free (base_dir);
1405                 return TRUE;
1406         }
1407         g_free (base_dir);
1408
1409         all_dirs = mono_string_to_utf8 (setup->shadow_copy_directories);
1410         directories = g_strsplit (all_dirs, G_SEARCHPATH_SEPARATOR_S, 1000);
1411         dir_ptr = directories;
1412         while (*dir_ptr) {
1413                 if (**dir_ptr != '\0' && !strcmp (*dir_ptr, dir_name)) {
1414                         found = TRUE;
1415                         break;
1416                 }
1417                 dir_ptr++;
1418         }
1419         g_strfreev (directories);
1420         g_free (all_dirs);
1421         return found;
1422 }
1423
1424 char *
1425 mono_make_shadow_copy (const char *filename)
1426 {
1427         gchar *sibling_source, *sibling_target;
1428         gint sibling_source_len, sibling_target_len;
1429         guint16 *orig, *dest;
1430         char *shadow;
1431         gboolean copy_result;
1432         MonoException *exc;
1433         struct stat src_sbuf;
1434         struct utimbuf utbuf;
1435         char *dir_name = g_path_get_dirname (filename);
1436         MonoDomain *domain = mono_domain_get ();
1437         char *shadow_dir;
1438
1439         set_domain_search_path (domain);
1440
1441         if (!mono_is_shadow_copy_enabled (domain, dir_name)) {
1442                 g_free (dir_name);
1443                 return (char *) filename;
1444         }
1445         /* Is dir_name a shadow_copy destination already? */
1446         shadow_dir = get_shadow_assembly_location_base (domain);
1447         if (strstr (dir_name, shadow_dir)) {
1448                 g_free (shadow_dir);
1449                 g_free (dir_name);
1450                 return (char *) filename;
1451         }
1452         g_free (shadow_dir);
1453         g_free (dir_name);
1454
1455         shadow = get_shadow_assembly_location (filename);
1456         if (ensure_directory_exists (shadow) == FALSE) {
1457                 g_free (shadow);
1458                 exc = mono_get_exception_execution_engine ("Failed to create shadow copy (ensure directory exists).");
1459                 mono_raise_exception (exc);
1460         }
1461
1462         if (!private_file_needs_copying (filename, &src_sbuf, shadow))
1463                 return (char*) shadow;
1464
1465         orig = g_utf8_to_utf16 (filename, strlen (filename), NULL, NULL, NULL);
1466         dest = g_utf8_to_utf16 (shadow, strlen (shadow), NULL, NULL, NULL);
1467         DeleteFile (dest);
1468         copy_result = CopyFile (orig, dest, FALSE);
1469         g_free (dest);
1470         g_free (orig);
1471
1472         if (copy_result == FALSE) {
1473                 g_free (shadow);
1474                 exc = mono_get_exception_execution_engine ("Failed to create shadow copy (CopyFile).");
1475                 mono_raise_exception (exc);
1476         }
1477
1478         /* attempt to copy .mdb, .config if they exist */
1479         sibling_source = g_strconcat (filename, ".config", NULL);
1480         sibling_source_len = strlen (sibling_source);
1481         sibling_target = g_strconcat (shadow, ".config", NULL);
1482         sibling_target_len = strlen (sibling_target);
1483
1484         copy_result = shadow_copy_sibling (sibling_source, sibling_source_len, ".mdb", sibling_target, sibling_target_len, 7);
1485         if (copy_result == TRUE)
1486                 copy_result = shadow_copy_sibling (sibling_source, sibling_source_len, ".config", sibling_target, sibling_target_len, 7);
1487
1488         g_free (sibling_source);
1489         g_free (sibling_target);
1490
1491         if (copy_result == FALSE)  {
1492                 g_free (shadow);
1493                 exc = mono_get_exception_execution_engine ("Failed to create shadow copy of sibling data (CopyFile).");
1494                 mono_raise_exception (exc);
1495         }
1496
1497         /* Create a .ini file containing the original assembly location */
1498         if (!shadow_copy_create_ini (shadow, filename)) {
1499                 g_free (shadow);
1500                 exc = mono_get_exception_execution_engine ("Failed to create shadow copy .ini file.");
1501                 mono_raise_exception (exc);
1502         }
1503
1504         utbuf.actime = src_sbuf.st_atime;
1505         utbuf.modtime = src_sbuf.st_mtime;
1506         utime (shadow, &utbuf);
1507
1508         return shadow;
1509 }
1510 #endif /* DISABLE_SHADOW_COPY */
1511
1512 MonoDomain *
1513 mono_domain_from_appdomain (MonoAppDomain *appdomain)
1514 {
1515         if (appdomain == NULL)
1516                 return NULL;
1517
1518         return appdomain->data;
1519 }
1520
1521 static gboolean
1522 try_load_from (MonoAssembly **assembly, const gchar *path1, const gchar *path2,
1523                                         const gchar *path3, const gchar *path4,
1524                                         gboolean refonly, gboolean is_private)
1525 {
1526         gchar *fullpath;
1527         gboolean found = FALSE;
1528
1529         *assembly = NULL;
1530         fullpath = g_build_filename (path1, path2, path3, path4, NULL);
1531
1532         if (IS_PORTABILITY_SET) {
1533                 gchar *new_fullpath = mono_portability_find_file (fullpath, TRUE);
1534                 if (new_fullpath) {
1535                         g_free (fullpath);
1536                         fullpath = new_fullpath;
1537                         found = TRUE;
1538                 }
1539         } else
1540                 found = g_file_test (fullpath, G_FILE_TEST_IS_REGULAR);
1541
1542         if (found)
1543                 *assembly = mono_assembly_open_full (fullpath, NULL, refonly);
1544
1545         g_free (fullpath);
1546         return (*assembly != NULL);
1547 }
1548
1549 static MonoAssembly *
1550 real_load (gchar **search_path, const gchar *culture, const gchar *name, gboolean refonly)
1551 {
1552         MonoAssembly *result = NULL;
1553         gchar **path;
1554         gchar *filename;
1555         const gchar *local_culture;
1556         gint len;
1557         gboolean is_private = FALSE;
1558
1559         if (!culture || *culture == '\0') {
1560                 local_culture = "";
1561         } else {
1562                 local_culture = culture;
1563         }
1564
1565         filename =  g_strconcat (name, ".dll", NULL);
1566         len = strlen (filename);
1567
1568         for (path = search_path; *path; path++) {
1569                 if (**path == '\0') {
1570                         is_private = TRUE;
1571                         continue; /* Ignore empty ApplicationBase */
1572                 }
1573
1574                 /* See test cases in bug #58992 and bug #57710 */
1575                 /* 1st try: [culture]/[name].dll (culture may be empty) */
1576                 strcpy (filename + len - 4, ".dll");
1577                 if (try_load_from (&result, *path, local_culture, "", filename, refonly, is_private))
1578                         break;
1579
1580                 /* 2nd try: [culture]/[name].exe (culture may be empty) */
1581                 strcpy (filename + len - 4, ".exe");
1582                 if (try_load_from (&result, *path, local_culture, "", filename, refonly, is_private))
1583                         break;
1584
1585                 /* 3rd try: [culture]/[name]/[name].dll (culture may be empty) */
1586                 strcpy (filename + len - 4, ".dll");
1587                 if (try_load_from (&result, *path, local_culture, name, filename, refonly, is_private))
1588                         break;
1589
1590                 /* 4th try: [culture]/[name]/[name].exe (culture may be empty) */
1591                 strcpy (filename + len - 4, ".exe");
1592                 if (try_load_from (&result, *path, local_culture, name, filename, refonly, is_private))
1593                         break;
1594         }
1595
1596         g_free (filename);
1597         return result;
1598 }
1599
1600 /*
1601  * Try loading the assembly from ApplicationBase and PrivateBinPath
1602  * and then from assemblies_path if any.
1603  * LOCKING: This is called from the assembly loading code, which means the caller
1604  * might hold the loader lock. Thus, this function must not acquire the domain lock.
1605  */
1606 static MonoAssembly *
1607 mono_domain_assembly_preload (MonoAssemblyName *aname,
1608                               gchar **assemblies_path,
1609                               gpointer user_data)
1610 {
1611         MonoDomain *domain = mono_domain_get ();
1612         MonoAssembly *result = NULL;
1613         gboolean refonly = GPOINTER_TO_UINT (user_data);
1614
1615         set_domain_search_path (domain);
1616
1617         if (domain->search_path && domain->search_path [0] != NULL) {
1618                 result = real_load (domain->search_path, aname->culture, aname->name, refonly);
1619         }
1620
1621         if (result == NULL && assemblies_path && assemblies_path [0] != NULL) {
1622                 result = real_load (assemblies_path, aname->culture, aname->name, refonly);
1623         }
1624
1625         return result;
1626 }
1627
1628 /*
1629  * Check whenever a given assembly was already loaded in the current appdomain.
1630  */
1631 static MonoAssembly *
1632 mono_domain_assembly_search (MonoAssemblyName *aname,
1633                                                          gpointer user_data)
1634 {
1635         MonoDomain *domain = mono_domain_get ();
1636         GSList *tmp;
1637         MonoAssembly *ass;
1638         gboolean refonly = GPOINTER_TO_UINT (user_data);
1639
1640         mono_domain_assemblies_lock (domain);
1641         for (tmp = domain->domain_assemblies; tmp; tmp = tmp->next) {
1642                 ass = tmp->data;
1643                 /* Dynamic assemblies can't match here in MS.NET */
1644                 if (ass->dynamic || refonly != ass->ref_only || !mono_assembly_names_equal (aname, &ass->aname))
1645                         continue;
1646
1647                 mono_domain_assemblies_unlock (domain);
1648                 return ass;
1649         }
1650         mono_domain_assemblies_unlock (domain);
1651
1652         return NULL;
1653 }
1654
1655 MonoReflectionAssembly *
1656 ves_icall_System_Reflection_Assembly_LoadFrom (MonoString *fname, MonoBoolean refOnly)
1657 {
1658         MonoDomain *domain = mono_domain_get ();
1659         char *name, *filename;
1660         MonoImageOpenStatus status = MONO_IMAGE_OK;
1661         MonoAssembly *ass;
1662
1663         MONO_ARCH_SAVE_REGS;
1664
1665         if (fname == NULL) {
1666                 MonoException *exc = mono_get_exception_argument_null ("assemblyFile");
1667                 mono_raise_exception (exc);
1668         }
1669
1670         name = filename = mono_string_to_utf8 (fname);
1671
1672         ass = mono_assembly_open_full (filename, &status, refOnly);
1673
1674         if (!ass){
1675                 MonoException *exc;
1676
1677                 if (status == MONO_IMAGE_IMAGE_INVALID)
1678                         exc = mono_get_exception_bad_image_format2 (NULL, fname);
1679                 else
1680                         exc = mono_get_exception_file_not_found2 (NULL, fname);
1681                 g_free (name);
1682                 mono_raise_exception (exc);
1683         }
1684
1685         g_free (name);
1686
1687         return mono_assembly_get_object (domain, ass);
1688 }
1689
1690 MonoReflectionAssembly *
1691 ves_icall_System_AppDomain_LoadAssemblyRaw (MonoAppDomain *ad,
1692                                             MonoArray *raw_assembly,
1693                                             MonoArray *raw_symbol_store, MonoObject *evidence,
1694                                             MonoBoolean refonly)
1695 {
1696         MonoAssembly *ass;
1697         MonoReflectionAssembly *refass = NULL;
1698         MonoDomain *domain = ad->data;
1699         MonoImageOpenStatus status;
1700         guint32 raw_assembly_len = mono_array_length (raw_assembly);
1701         MonoImage *image = mono_image_open_from_data_full (mono_array_addr (raw_assembly, gchar, 0), raw_assembly_len, TRUE, NULL, refonly);
1702
1703         if (!image) {
1704                 mono_raise_exception (mono_get_exception_bad_image_format (""));
1705                 return NULL;
1706         }
1707
1708         if (raw_symbol_store != NULL)
1709                 mono_debug_open_image_from_memory (image, mono_array_addr (raw_symbol_store, guint8, 0), mono_array_length (raw_symbol_store));
1710
1711         ass = mono_assembly_load_from_full (image, "", &status, refonly);
1712
1713
1714         if (!ass) {
1715                 mono_image_close (image);
1716                 mono_raise_exception (mono_get_exception_bad_image_format (""));
1717                 return NULL;
1718         }
1719
1720         refass = mono_assembly_get_object (domain, ass);
1721         MONO_OBJECT_SETREF (refass, evidence, evidence);
1722         return refass;
1723 }
1724
1725 MonoReflectionAssembly *
1726 ves_icall_System_AppDomain_LoadAssembly (MonoAppDomain *ad,  MonoString *assRef, MonoObject *evidence, MonoBoolean refOnly)
1727 {
1728         MonoDomain *domain = ad->data;
1729         MonoImageOpenStatus status = MONO_IMAGE_OK;
1730         MonoAssembly *ass;
1731         MonoAssemblyName aname;
1732         MonoReflectionAssembly *refass = NULL;
1733         gchar *name;
1734         gboolean parsed;
1735
1736         MONO_ARCH_SAVE_REGS;
1737
1738         g_assert (assRef != NULL);
1739
1740         name = mono_string_to_utf8 (assRef);
1741         parsed = mono_assembly_name_parse (name, &aname);
1742         g_free (name);
1743
1744         if (!parsed) {
1745                 /* This is a parse error... */
1746                 return NULL;
1747         }
1748
1749         ass = mono_assembly_load_full_nosearch (&aname, NULL, &status, refOnly);
1750         mono_assembly_name_free (&aname);
1751
1752         if (!ass) {
1753                 /* MS.NET doesn't seem to call the assembly resolve handler for refonly assemblies */
1754                 if (!refOnly)
1755                         refass = mono_try_assembly_resolve (domain, assRef, refOnly);
1756                 else
1757                         refass = NULL;
1758                 if (!refass) {
1759                         return NULL;
1760                 }
1761         }
1762
1763         if (refass == NULL)
1764                 refass = mono_assembly_get_object (domain, ass);
1765
1766         MONO_OBJECT_SETREF (refass, evidence, evidence);
1767         return refass;
1768 }
1769
1770 void
1771 ves_icall_System_AppDomain_InternalUnload (gint32 domain_id)
1772 {
1773         MonoDomain * domain = mono_domain_get_by_id (domain_id);
1774
1775         MONO_ARCH_SAVE_REGS;
1776
1777         if (NULL == domain) {
1778                 MonoException *exc = mono_get_exception_execution_engine ("Failed to unload domain, domain id not found");
1779                 mono_raise_exception (exc);
1780         }
1781
1782         if (domain == mono_get_root_domain ()) {
1783                 mono_raise_exception (mono_get_exception_cannot_unload_appdomain ("The default appdomain can not be unloaded."));
1784                 return;
1785         }
1786
1787         /*
1788          * Unloading seems to cause problems when running NUnit/NAnt, hence
1789          * this workaround.
1790          */
1791         if (g_getenv ("MONO_NO_UNLOAD"))
1792                 return;
1793
1794         mono_domain_unload (domain);
1795 }
1796
1797 gboolean
1798 ves_icall_System_AppDomain_InternalIsFinalizingForUnload (gint32 domain_id)
1799 {
1800         MonoDomain *domain = mono_domain_get_by_id (domain_id);
1801
1802         if (!domain)
1803                 return TRUE;
1804
1805         return mono_domain_is_unloading (domain);
1806 }
1807
1808 gint32
1809 ves_icall_System_AppDomain_ExecuteAssembly (MonoAppDomain *ad,
1810                                                                                         MonoReflectionAssembly *refass, MonoArray *args)
1811 {
1812         MonoImage *image;
1813         MonoMethod *method;
1814
1815         MONO_ARCH_SAVE_REGS;
1816
1817         g_assert (refass);
1818         image = refass->assembly->image;
1819         g_assert (image);
1820
1821         method = mono_get_method (image, mono_image_get_entry_point (image), NULL);
1822
1823         if (!method)
1824                 g_error ("No entry point method found in %s", image->name);
1825
1826         if (!args)
1827                 args = (MonoArray *) mono_array_new (ad->data, mono_defaults.string_class, 0);
1828
1829         return mono_runtime_exec_main (method, (MonoArray *)args, NULL);
1830 }
1831
1832 gint32
1833 ves_icall_System_AppDomain_GetIDFromDomain (MonoAppDomain * ad)
1834 {
1835         MONO_ARCH_SAVE_REGS;
1836
1837         return ad->data->domain_id;
1838 }
1839
1840 MonoAppDomain *
1841 ves_icall_System_AppDomain_InternalSetDomain (MonoAppDomain *ad)
1842 {
1843         MonoDomain *old_domain = mono_domain_get();
1844
1845         MONO_ARCH_SAVE_REGS;
1846
1847         if (!mono_domain_set (ad->data, FALSE))
1848                 mono_raise_exception (mono_get_exception_appdomain_unloaded ());
1849
1850         return old_domain->domain;
1851 }
1852
1853 MonoAppDomain *
1854 ves_icall_System_AppDomain_InternalSetDomainByID (gint32 domainid)
1855 {
1856         MonoDomain *current_domain = mono_domain_get ();
1857         MonoDomain *domain = mono_domain_get_by_id (domainid);
1858
1859         MONO_ARCH_SAVE_REGS;
1860
1861         if (!domain || !mono_domain_set (domain, FALSE))
1862                 mono_raise_exception (mono_get_exception_appdomain_unloaded ());
1863
1864         return current_domain->domain;
1865 }
1866
1867 void
1868 ves_icall_System_AppDomain_InternalPushDomainRef (MonoAppDomain *ad)
1869 {
1870         MONO_ARCH_SAVE_REGS;
1871
1872         mono_thread_push_appdomain_ref (ad->data);
1873 }
1874
1875 void
1876 ves_icall_System_AppDomain_InternalPushDomainRefByID (gint32 domain_id)
1877 {
1878         MonoDomain *domain = mono_domain_get_by_id (domain_id);
1879
1880         MONO_ARCH_SAVE_REGS;
1881
1882         if (!domain)
1883                 /*
1884                  * Raise an exception to prevent the managed code from executing a pop
1885                  * later.
1886                  */
1887                 mono_raise_exception (mono_get_exception_appdomain_unloaded ());
1888
1889         mono_thread_push_appdomain_ref (domain);
1890 }
1891
1892 void
1893 ves_icall_System_AppDomain_InternalPopDomainRef (void)
1894 {
1895         MONO_ARCH_SAVE_REGS;
1896
1897         mono_thread_pop_appdomain_ref ();
1898 }
1899
1900 MonoAppContext *
1901 ves_icall_System_AppDomain_InternalGetContext ()
1902 {
1903         MONO_ARCH_SAVE_REGS;
1904
1905         return mono_context_get ();
1906 }
1907
1908 MonoAppContext *
1909 ves_icall_System_AppDomain_InternalGetDefaultContext ()
1910 {
1911         MONO_ARCH_SAVE_REGS;
1912
1913         return mono_domain_get ()->default_context;
1914 }
1915
1916 MonoAppContext *
1917 ves_icall_System_AppDomain_InternalSetContext (MonoAppContext *mc)
1918 {
1919         MonoAppContext *old_context = mono_context_get ();
1920
1921         MONO_ARCH_SAVE_REGS;
1922
1923         mono_context_set (mc);
1924
1925         return old_context;
1926 }
1927
1928 MonoString *
1929 ves_icall_System_AppDomain_InternalGetProcessGuid (MonoString* newguid)
1930 {
1931         MonoDomain* mono_root_domain = mono_get_root_domain ();
1932         mono_domain_lock (mono_root_domain);
1933         if (process_guid_set) {
1934                 mono_domain_unlock (mono_root_domain);
1935                 return mono_string_new_utf16 (mono_domain_get (), process_guid, sizeof(process_guid)/2);
1936         }
1937         memcpy (process_guid, mono_string_chars(newguid), sizeof(process_guid));
1938         process_guid_set = TRUE;
1939         mono_domain_unlock (mono_root_domain);
1940         return newguid;
1941 }
1942
1943 gboolean
1944 mono_domain_is_unloading (MonoDomain *domain)
1945 {
1946         if (domain->state == MONO_APPDOMAIN_UNLOADING || domain->state == MONO_APPDOMAIN_UNLOADED)
1947                 return TRUE;
1948         else
1949                 return FALSE;
1950 }
1951
1952 static void
1953 clear_cached_vtable (gpointer key, gpointer value, gpointer user_data)
1954 {
1955         MonoClass *klass = (MonoClass*)key;
1956         MonoVTable *vtable = value;
1957         MonoDomain *domain = (MonoDomain*)user_data;
1958         MonoClassRuntimeInfo *runtime_info;
1959
1960         runtime_info = klass->runtime_info;
1961         if (runtime_info && runtime_info->max_domain >= domain->domain_id)
1962                 runtime_info->domain_vtables [domain->domain_id] = NULL;
1963         if (vtable->data && klass->has_static_refs)
1964                 mono_gc_free_fixed (vtable->data);
1965 }
1966
1967 typedef struct unload_data {
1968         MonoDomain *domain;
1969         char *failure_reason;
1970 } unload_data;
1971
1972 #ifdef HAVE_SGEN_GC
1973 static void
1974 deregister_reflection_info_roots_nspace_table (gpointer key, gpointer value, gpointer image)
1975 {
1976         guint32 index = GPOINTER_TO_UINT (value);
1977         MonoClass *class = mono_class_get (image, MONO_TOKEN_TYPE_DEF | index);
1978
1979         g_assert (class);
1980
1981         if (class->reflection_info)
1982                 mono_gc_deregister_root ((char*) &class->reflection_info);
1983 }
1984
1985 static void
1986 deregister_reflection_info_roots_name_space (gpointer key, gpointer value, gpointer user_data)
1987 {
1988         g_hash_table_foreach (value, deregister_reflection_info_roots_nspace_table, user_data);
1989 }
1990
1991 static void
1992 deregister_reflection_info_roots (MonoDomain *domain)
1993 {
1994         GSList *list;
1995
1996         mono_loader_lock ();
1997         mono_domain_assemblies_lock (domain);
1998         for (list = domain->domain_assemblies; list; list = list->next) {
1999                 MonoAssembly *assembly = list->data;
2000                 MonoImage *image = assembly->image;
2001                 int i;
2002
2003                 if (image->dynamic && image->name_cache)
2004                         g_hash_table_foreach (image->name_cache, deregister_reflection_info_roots_name_space, image);
2005                 for (i = 0; i < image->module_count; ++i) {
2006                         MonoImage *module = image->modules [i];
2007                         if (module && module->dynamic && module->name_cache)
2008                                 g_hash_table_foreach (module->name_cache, deregister_reflection_info_roots_name_space, module);
2009                 }
2010         }
2011         mono_domain_assemblies_unlock (domain);
2012         mono_loader_unlock ();
2013 }
2014 #endif
2015
2016 static guint32 WINAPI
2017 unload_thread_main (void *arg)
2018 {
2019         unload_data *data = (unload_data*)arg;
2020         MonoDomain *domain = data->domain;
2021
2022         /* Have to attach to the runtime so shutdown can wait for this thread */
2023         mono_thread_attach (mono_get_root_domain ());
2024
2025         /*
2026          * FIXME: Abort our parent thread last, so we can return a failure
2027          * indication if aborting times out.
2028          */
2029         if (!mono_threads_abort_appdomain_threads (domain, -1)) {
2030                 data->failure_reason = g_strdup_printf ("Aborting of threads in domain %s timed out.", domain->friendly_name);
2031                 return 1;
2032         }
2033
2034         if (!mono_thread_pool_remove_domain_jobs (domain, -1)) {
2035                 data->failure_reason = g_strdup_printf ("Cleanup of threadpool jobs of domain %s timed out.", domain->friendly_name);
2036                 return 1;
2037         }
2038
2039         /* Finalize all finalizable objects in the doomed appdomain */
2040         if (!mono_domain_finalize (domain, -1)) {
2041                 data->failure_reason = g_strdup_printf ("Finalization of domain %s timed out.", domain->friendly_name);
2042                 return 1;
2043         }
2044
2045         /* Clear references to our vtables in class->runtime_info.
2046          * We also hold the loader lock because we're going to change
2047          * class->runtime_info.
2048          */
2049
2050         mono_loader_lock ();
2051         mono_domain_lock (domain);
2052         g_hash_table_foreach (domain->class_vtable_hash, clear_cached_vtable, domain);
2053 #ifdef HAVE_SGEN_GC
2054         deregister_reflection_info_roots (domain);
2055 #endif
2056         mono_domain_unlock (domain);
2057         mono_loader_unlock ();
2058
2059         mono_threads_clear_cached_culture (domain);
2060
2061         domain->state = MONO_APPDOMAIN_UNLOADED;
2062
2063         /* printf ("UNLOADED %s.\n", domain->friendly_name); */
2064
2065         /* remove from the handle table the items related to this domain */
2066         mono_gchandle_free_domain (domain);
2067
2068         mono_domain_free (domain, FALSE);
2069
2070         mono_gc_collect (mono_gc_max_generation ());
2071
2072         return 0;
2073 }
2074
2075 /*
2076  * mono_domain_unload:
2077  * @domain: The domain to unload
2078  *
2079  *  Unloads an appdomain. Follows the process outlined in:
2080  *  http://blogs.gotdotnet.com/cbrumme
2081  *
2082  *  If doing things the 'right' way is too hard or complex, we do it the
2083  *  'simple' way, which means do everything needed to avoid crashes and
2084  *  memory leaks, but not much else.
2085  */
2086 void
2087 mono_domain_unload (MonoDomain *domain)
2088 {
2089         HANDLE thread_handle;
2090         gsize tid;
2091         guint32 res;
2092         MonoAppDomainState prev_state;
2093         MonoMethod *method;
2094         MonoObject *exc;
2095         unload_data thread_data;
2096         MonoDomain *caller_domain = mono_domain_get ();
2097
2098         /* printf ("UNLOAD STARTING FOR %s (%p) IN THREAD 0x%x.\n", domain->friendly_name, domain, GetCurrentThreadId ()); */
2099
2100         /* Atomically change our state to UNLOADING */
2101         prev_state = InterlockedCompareExchange ((gint32*)&domain->state,
2102                                                                                          MONO_APPDOMAIN_UNLOADING_START,
2103                                                                                          MONO_APPDOMAIN_CREATED);
2104         if (prev_state != MONO_APPDOMAIN_CREATED) {
2105                 switch (prev_state) {
2106                 case MONO_APPDOMAIN_UNLOADING_START:
2107                 case MONO_APPDOMAIN_UNLOADING:
2108                         mono_raise_exception (mono_get_exception_cannot_unload_appdomain ("Appdomain is already being unloaded."));
2109                         break;
2110                 case MONO_APPDOMAIN_UNLOADED:
2111                         mono_raise_exception (mono_get_exception_cannot_unload_appdomain ("Appdomain is already unloaded."));
2112                         break;
2113                 default:
2114                         g_warning ("Incalid appdomain state %d", prev_state);
2115                         g_assert_not_reached ();
2116                 }
2117         }
2118
2119         mono_debugger_event_unload_appdomain (domain);
2120
2121         mono_domain_set (domain, FALSE);
2122         /* Notify OnDomainUnload listeners */
2123         method = mono_class_get_method_from_name (domain->domain->mbr.obj.vtable->klass, "DoDomainUnload", -1);
2124         g_assert (method);
2125
2126         exc = NULL;
2127         mono_runtime_invoke (method, domain->domain, NULL, &exc);
2128         if (exc) {
2129                 /* Roll back the state change */
2130                 domain->state = MONO_APPDOMAIN_CREATED;
2131                 mono_domain_set (caller_domain, FALSE);
2132                 mono_raise_exception ((MonoException*)exc);
2133         }
2134         mono_domain_set (caller_domain, FALSE);
2135
2136         thread_data.domain = domain;
2137         thread_data.failure_reason = NULL;
2138
2139         /*The managed callback finished successfully, now we start tearing down the appdomain*/
2140         domain->state = MONO_APPDOMAIN_UNLOADING;
2141         /*
2142          * First we create a separate thread for unloading, since
2143          * we might have to abort some threads, including the current one.
2144          */
2145         /*
2146          * If we create a non-suspended thread, the runtime will hang.
2147          * See:
2148          * http://bugzilla.ximian.com/show_bug.cgi?id=27663
2149          */
2150 #if 0
2151         thread_handle = mono_create_thread (NULL, 0, unload_thread_main, &thread_data, 0, &tid);
2152 #else
2153         thread_handle = mono_create_thread (NULL, 0, (LPTHREAD_START_ROUTINE)unload_thread_main, &thread_data, CREATE_SUSPENDED, &tid);
2154         if (thread_handle == NULL) {
2155                 return;
2156         }
2157         ResumeThread (thread_handle);
2158 #endif
2159
2160         /* Wait for the thread */
2161         while ((res = WaitForSingleObjectEx (thread_handle, INFINITE, TRUE) == WAIT_IO_COMPLETION)) {
2162                 if (mono_thread_has_appdomain_ref (mono_thread_current (), domain) && (mono_thread_interruption_requested ()))
2163                         /* The unload thread tries to abort us */
2164                         /* The icall wrapper will execute the abort */
2165                         CloseHandle (thread_handle);
2166                         return;
2167         }
2168         CloseHandle (thread_handle);
2169
2170         if (thread_data.failure_reason) {
2171                 MonoException *ex;
2172
2173                 /* Roll back the state change */
2174                 domain->state = MONO_APPDOMAIN_CREATED;
2175
2176                 g_warning ("%s", thread_data.failure_reason);
2177
2178                 ex = mono_get_exception_cannot_unload_appdomain (thread_data.failure_reason);
2179
2180                 g_free (thread_data.failure_reason);
2181                 thread_data.failure_reason = NULL;
2182
2183                 mono_raise_exception (ex);
2184         }
2185 }