2 * threads.c: Thread support internal calls
5 * Dick Porter (dick@ximian.com)
6 * Paolo Molaro (lupus@ximian.com)
7 * Patrik Torstensson (patrik.torstensson@labs2.com)
9 * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
10 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
11 * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
12 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
20 #include <mono/metadata/object.h>
21 #include <mono/metadata/domain-internals.h>
22 #include <mono/metadata/profiler-private.h>
23 #include <mono/metadata/threads.h>
24 #include <mono/metadata/threads-types.h>
25 #include <mono/metadata/exception.h>
26 #include <mono/metadata/environment.h>
27 #include <mono/metadata/monitor.h>
28 #include <mono/metadata/gc-internals.h>
29 #include <mono/metadata/marshal.h>
30 #include <mono/metadata/runtime.h>
31 #include <mono/io-layer/io-layer.h>
32 #include <mono/metadata/object-internals.h>
33 #include <mono/metadata/mono-debug-debugger.h>
34 #include <mono/utils/monobitset.h>
35 #include <mono/utils/mono-compiler.h>
36 #include <mono/utils/mono-mmap.h>
37 #include <mono/utils/mono-membar.h>
38 #include <mono/utils/mono-time.h>
39 #include <mono/utils/mono-threads.h>
40 #include <mono/utils/hazard-pointer.h>
41 #include <mono/utils/mono-tls.h>
42 #include <mono/utils/atomic.h>
43 #include <mono/utils/mono-memory-model.h>
45 #include <mono/metadata/gc-internals.h>
46 #include <mono/metadata/reflection-internals.h>
52 #if defined(PLATFORM_ANDROID) && !defined(TARGET_ARM64) && !defined(TARGET_AMD64)
53 #define USE_TKILL_ON_ANDROID 1
56 #ifdef PLATFORM_ANDROID
59 #ifdef USE_TKILL_ON_ANDROID
60 extern int tkill (pid_t tid, int signal);
64 /*#define THREAD_DEBUG(a) do { a; } while (0)*/
65 #define THREAD_DEBUG(a)
66 /*#define THREAD_WAIT_DEBUG(a) do { a; } while (0)*/
67 #define THREAD_WAIT_DEBUG(a)
68 /*#define LIBGC_DEBUG(a) do { a; } while (0)*/
69 #define LIBGC_DEBUG(a)
71 #define SPIN_TRYLOCK(i) (InterlockedCompareExchange (&(i), 1, 0) == 0)
72 #define SPIN_LOCK(i) do { \
73 if (SPIN_TRYLOCK (i)) \
77 #define SPIN_UNLOCK(i) i = 0
79 #define LOCK_THREAD(thread) lock_thread((thread))
80 #define UNLOCK_THREAD(thread) unlock_thread((thread))
82 /* Provide this for systems with glib < 2.6 */
83 #ifndef G_GSIZE_FORMAT
84 # if GLIB_SIZEOF_LONG == 8
85 # define G_GSIZE_FORMAT "lu"
87 # define G_GSIZE_FORMAT "u"
93 guint32 (*func)(void *);
109 typedef struct _StaticDataFreeList StaticDataFreeList;
110 struct _StaticDataFreeList {
111 StaticDataFreeList *next;
119 StaticDataFreeList *freelist;
122 /* Number of cached culture objects in the MonoThread->cached_culture_info array
123 * (per-type): we use the first NUM entries for CultureInfo and the last for
124 * UICultureInfo. So the size of the array is really NUM_CACHED_CULTURES * 2.
126 #define NUM_CACHED_CULTURES 4
127 #define CULTURES_START_IDX 0
128 #define UICULTURES_START_IDX NUM_CACHED_CULTURES
130 /* Controls access to the 'threads' hash table */
131 static void mono_threads_lock (void);
132 static void mono_threads_unlock (void);
133 static MonoCoopMutex threads_mutex;
135 /* Controls access to the 'joinable_threads' hash table */
136 #define joinable_threads_lock() mono_os_mutex_lock (&joinable_threads_mutex)
137 #define joinable_threads_unlock() mono_os_mutex_unlock (&joinable_threads_mutex)
138 static mono_mutex_t joinable_threads_mutex;
140 /* Holds current status of static data heap */
141 static StaticDataInfo thread_static_info;
142 static StaticDataInfo context_static_info;
144 /* The hash of existing threads (key is thread ID, value is
145 * MonoInternalThread*) that need joining before exit
147 static MonoGHashTable *threads=NULL;
149 /* List of app context GC handles.
150 * Added to from ves_icall_System_Runtime_Remoting_Contexts_Context_RegisterContext ().
152 static GHashTable *contexts = NULL;
154 /* Cleanup queue for contexts. */
155 static MonoReferenceQueue *context_queue;
158 * Threads which are starting up and they are not in the 'threads' hash yet.
159 * When handle_store is called for a thread, it will be removed from this hash table.
160 * Protected by mono_threads_lock ().
162 static MonoGHashTable *threads_starting_up = NULL;
164 /* The TLS key that holds the MonoObject assigned to each thread */
165 static MonoNativeTlsKey current_object_key;
168 /* Protected by the threads lock */
169 static GHashTable *joinable_threads;
170 static int joinable_thread_count;
172 #ifdef MONO_HAVE_FAST_TLS
173 /* we need to use both the Tls* functions and __thread because
174 * the gc needs to see all the threads
176 MONO_FAST_TLS_DECLARE(tls_current_object);
177 #define SET_CURRENT_OBJECT(x) do { \
178 MONO_FAST_TLS_SET (tls_current_object, x); \
179 mono_native_tls_set_value (current_object_key, x); \
181 #define GET_CURRENT_OBJECT() ((MonoInternalThread*) MONO_FAST_TLS_GET (tls_current_object))
183 #define SET_CURRENT_OBJECT(x) mono_native_tls_set_value (current_object_key, x)
184 #define GET_CURRENT_OBJECT() (MonoInternalThread*) mono_native_tls_get_value (current_object_key)
187 /* function called at thread start */
188 static MonoThreadStartCB mono_thread_start_cb = NULL;
190 /* function called at thread attach */
191 static MonoThreadAttachCB mono_thread_attach_cb = NULL;
193 /* function called at thread cleanup */
194 static MonoThreadCleanupFunc mono_thread_cleanup_fn = NULL;
196 /* The default stack size for each thread */
197 static guint32 default_stacksize = 0;
198 #define default_stacksize_for_thread(thread) ((thread)->stack_size? (thread)->stack_size: default_stacksize)
200 static void thread_adjust_static_data (MonoInternalThread *thread);
201 static void context_adjust_static_data (MonoAppContext *ctx);
202 static void mono_free_static_data (gpointer* static_data);
203 static void mono_init_static_data_info (StaticDataInfo *static_data);
204 static guint32 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align);
205 static gboolean mono_thread_resume (MonoInternalThread* thread);
206 static void async_abort_internal (MonoInternalThread *thread, gboolean install_async_abort);
207 static void self_abort_internal (MonoError *error);
208 static void async_suspend_internal (MonoInternalThread *thread, gboolean interrupt);
209 static void self_suspend_internal (void);
211 static MonoException* mono_thread_execute_interruption (void);
212 static void ref_stack_destroy (gpointer rs);
214 /* Spin lock for InterlockedXXX 64 bit functions */
215 #define mono_interlocked_lock() mono_os_mutex_lock (&interlocked_mutex)
216 #define mono_interlocked_unlock() mono_os_mutex_unlock (&interlocked_mutex)
217 static mono_mutex_t interlocked_mutex;
219 /* global count of thread interruptions requested */
220 static gint32 thread_interruption_requested = 0;
222 /* Event signaled when a thread changes its background mode */
223 static HANDLE background_change_event;
225 static gboolean shutting_down = FALSE;
227 static gint32 managed_thread_id_counter = 0;
229 /* Class lazy loading functions */
230 static GENERATE_GET_CLASS_WITH_CACHE (appdomain_unloaded_exception, System, AppDomainUnloadedException)
233 mono_threads_lock (void)
235 mono_locks_coop_acquire (&threads_mutex, ThreadsLock);
239 mono_threads_unlock (void)
241 mono_locks_coop_release (&threads_mutex, ThreadsLock);
246 get_next_managed_thread_id (void)
248 return InterlockedIncrement (&managed_thread_id_counter);
252 mono_thread_get_tls_key (void)
254 return current_object_key;
258 mono_thread_get_tls_offset (void)
263 if (current_object_key)
264 offset = current_object_key;
266 MONO_THREAD_VAR_OFFSET (tls_current_object,offset);
271 static inline MonoNativeThreadId
272 thread_get_tid (MonoInternalThread *thread)
274 /* We store the tid as a guint64 to keep the object layout constant between platforms */
275 return MONO_UINT_TO_NATIVE_THREAD_ID (thread->tid);
278 /* handle_store() and handle_remove() manage the array of threads that
279 * still need to be waited for when the main thread exits.
281 * If handle_store() returns FALSE the thread must not be started
282 * because Mono is shutting down.
284 static gboolean handle_store(MonoThread *thread, gboolean force_attach)
286 mono_threads_lock ();
288 THREAD_DEBUG (g_message ("%s: thread %p ID %"G_GSIZE_FORMAT, __func__, thread, (gsize)thread->internal_thread->tid));
290 if (threads_starting_up)
291 mono_g_hash_table_remove (threads_starting_up, thread);
293 if (shutting_down && !force_attach) {
294 mono_threads_unlock ();
299 MONO_GC_REGISTER_ROOT_FIXED (threads, MONO_ROOT_SOURCE_THREADING, "threads table");
300 threads=mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_VALUE_GC, MONO_ROOT_SOURCE_THREADING, "threads table");
303 /* We don't need to duplicate thread->handle, because it is
304 * only closed when the thread object is finalized by the GC.
306 g_assert (thread->internal_thread);
307 mono_g_hash_table_insert(threads, (gpointer)(gsize)(thread->internal_thread->tid),
308 thread->internal_thread);
310 mono_threads_unlock ();
315 static gboolean handle_remove(MonoInternalThread *thread)
318 gsize tid = thread->tid;
320 THREAD_DEBUG (g_message ("%s: thread ID %"G_GSIZE_FORMAT, __func__, tid));
322 mono_threads_lock ();
325 /* We have to check whether the thread object for the
326 * tid is still the same in the table because the
327 * thread might have been destroyed and the tid reused
328 * in the meantime, in which case the tid would be in
329 * the table, but with another thread object.
331 if (mono_g_hash_table_lookup (threads, (gpointer)tid) == thread) {
332 mono_g_hash_table_remove (threads, (gpointer)tid);
341 mono_threads_unlock ();
343 /* Don't close the handle here, wait for the object finalizer
344 * to do it. Otherwise, the following race condition applies:
346 * 1) Thread exits (and handle_remove() closes the handle)
348 * 2) Some other handle is reassigned the same slot
350 * 3) Another thread tries to join the first thread, and
351 * blocks waiting for the reassigned handle to be signalled
352 * (which might never happen). This is possible, because the
353 * thread calling Join() still has a reference to the first
359 static void ensure_synch_cs_set (MonoInternalThread *thread)
361 MonoCoopMutex *synch_cs;
363 if (thread->synch_cs != NULL) {
367 synch_cs = g_new0 (MonoCoopMutex, 1);
368 mono_coop_mutex_init_recursive (synch_cs);
370 if (InterlockedCompareExchangePointer ((gpointer *)&thread->synch_cs,
371 synch_cs, NULL) != NULL) {
372 /* Another thread must have installed this CS */
373 mono_coop_mutex_destroy (synch_cs);
379 lock_thread (MonoInternalThread *thread)
381 if (!thread->synch_cs)
382 ensure_synch_cs_set (thread);
384 g_assert (thread->synch_cs);
386 mono_coop_mutex_lock (thread->synch_cs);
390 unlock_thread (MonoInternalThread *thread)
392 mono_coop_mutex_unlock (thread->synch_cs);
396 * NOTE: this function can be called also for threads different from the current one:
397 * make sure no code called from it will ever assume it is run on the thread that is
398 * getting cleaned up.
400 static void thread_cleanup (MonoInternalThread *thread)
402 g_assert (thread != NULL);
404 if (thread->abort_state_handle) {
405 mono_gchandle_free (thread->abort_state_handle);
406 thread->abort_state_handle = 0;
408 thread->abort_exc = NULL;
409 thread->current_appcontext = NULL;
412 * This is necessary because otherwise we might have
413 * cross-domain references which will not get cleaned up when
414 * the target domain is unloaded.
416 if (thread->cached_culture_info) {
418 for (i = 0; i < NUM_CACHED_CULTURES * 2; ++i)
419 mono_array_set (thread->cached_culture_info, MonoObject*, i, NULL);
423 * thread->synch_cs can be NULL if this was called after
424 * ves_icall_System_Threading_InternalThread_Thread_free_internal.
425 * This can happen only during shutdown.
426 * The shutting_down flag is not always set, so we can't assert on it.
428 if (thread->synch_cs)
429 LOCK_THREAD (thread);
431 thread->state |= ThreadState_Stopped;
432 thread->state &= ~ThreadState_Background;
434 if (thread->synch_cs)
435 UNLOCK_THREAD (thread);
438 An interruption request has leaked to cleanup. Adjust the global counter.
440 This can happen is the abort source thread finds the abortee (this) thread
441 in unmanaged code. If this thread never trips back to managed code or check
442 the local flag it will be left set and positively unbalance the global counter.
444 Leaving the counter unbalanced will cause a performance degradation since all threads
445 will now keep checking their local flags all the time.
447 if (InterlockedExchange (&thread->interruption_requested, 0))
448 InterlockedDecrement (&thread_interruption_requested);
450 /* if the thread is not in the hash it has been removed already */
451 if (!handle_remove (thread)) {
452 if (thread == mono_thread_internal_current ()) {
453 mono_domain_unset ();
454 mono_memory_barrier ();
456 /* This needs to be called even if handle_remove () fails */
457 if (mono_thread_cleanup_fn)
458 mono_thread_cleanup_fn (thread_get_tid (thread));
461 mono_release_type_locks (thread);
463 /* Can happen when we attach the profiler helper thread in order to heapshot. */
464 if (!mono_thread_info_lookup (MONO_UINT_TO_NATIVE_THREAD_ID (thread->tid))->tools_thread)
465 mono_profiler_thread_end (thread->tid);
467 mono_hazard_pointer_clear (mono_hazard_pointer_get (), 1);
469 if (thread == mono_thread_internal_current ()) {
471 * This will signal async signal handlers that the thread has exited.
472 * The profiler callback needs this to be set, so it cannot be done earlier.
474 mono_domain_unset ();
475 mono_memory_barrier ();
478 if (thread == mono_thread_internal_current ())
479 mono_thread_pop_appdomain_ref ();
481 thread->cached_culture_info = NULL;
483 mono_free_static_data (thread->static_data);
484 thread->static_data = NULL;
485 ref_stack_destroy (thread->appdomain_refs);
486 thread->appdomain_refs = NULL;
488 if (mono_thread_cleanup_fn)
489 mono_thread_cleanup_fn (thread_get_tid (thread));
491 if (mono_gc_is_moving ()) {
492 MONO_GC_UNREGISTER_ROOT (thread->thread_pinning_ref);
493 thread->thread_pinning_ref = NULL;
499 * A special static data offset (guint32) consists of 3 parts:
501 * [0] 6-bit index into the array of chunks.
502 * [6] 25-bit offset into the array.
503 * [31] Bit indicating thread or context static.
508 #if G_BYTE_ORDER != G_LITTLE_ENDIAN
519 } SpecialStaticOffset;
521 #define SPECIAL_STATIC_OFFSET_TYPE_THREAD 0
522 #define SPECIAL_STATIC_OFFSET_TYPE_CONTEXT 1
524 #define MAKE_SPECIAL_STATIC_OFFSET(index, offset, type) \
525 ((SpecialStaticOffset) { .fields = { (index), (offset), (type) } }.raw)
526 #define ACCESS_SPECIAL_STATIC_OFFSET(x,f) \
527 (((SpecialStaticOffset *) &(x))->fields.f)
530 get_thread_static_data (MonoInternalThread *thread, guint32 offset)
532 g_assert (ACCESS_SPECIAL_STATIC_OFFSET (offset, type) == SPECIAL_STATIC_OFFSET_TYPE_THREAD);
534 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
535 int off = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
537 return ((char *) thread->static_data [idx]) + off;
541 get_context_static_data (MonoAppContext *ctx, guint32 offset)
543 g_assert (ACCESS_SPECIAL_STATIC_OFFSET (offset, type) == SPECIAL_STATIC_OFFSET_TYPE_CONTEXT);
545 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
546 int off = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
548 return ((char *) ctx->static_data [idx]) + off;
552 get_current_thread_ptr_for_domain (MonoDomain *domain, MonoInternalThread *thread)
554 static MonoClassField *current_thread_field = NULL;
558 if (!current_thread_field) {
559 current_thread_field = mono_class_get_field_from_name (mono_defaults.thread_class, "current_thread");
560 g_assert (current_thread_field);
563 mono_class_vtable (domain, mono_defaults.thread_class);
564 mono_domain_lock (domain);
565 offset = GPOINTER_TO_UINT (g_hash_table_lookup (domain->special_static_fields, current_thread_field));
566 mono_domain_unlock (domain);
569 return (MonoThread **)get_thread_static_data (thread, offset);
573 set_current_thread_for_domain (MonoDomain *domain, MonoInternalThread *thread, MonoThread *current)
575 MonoThread **current_thread_ptr = get_current_thread_ptr_for_domain (domain, thread);
577 g_assert (current->obj.vtable->domain == domain);
579 g_assert (!*current_thread_ptr);
580 *current_thread_ptr = current;
584 create_thread_object (MonoDomain *domain, MonoError *error)
586 MonoVTable *vt = mono_class_vtable (domain, mono_defaults.thread_class);
587 MonoThread *t = (MonoThread*)mono_object_new_mature (vt, error);
592 new_thread_with_internal (MonoDomain *domain, MonoInternalThread *internal, MonoError *error)
596 thread = create_thread_object (domain, error);
597 if (!mono_error_ok (error))
600 MONO_OBJECT_SETREF (thread, internal_thread, internal);
605 static MonoInternalThread*
606 create_internal_thread (MonoError *error)
608 MonoInternalThread *thread;
611 vt = mono_class_vtable (mono_get_root_domain (), mono_defaults.internal_thread_class);
612 thread = (MonoInternalThread*) mono_object_new_mature (vt, error);
613 if (!mono_error_ok (error))
616 thread->synch_cs = g_new0 (MonoCoopMutex, 1);
617 mono_coop_mutex_init_recursive (thread->synch_cs);
619 thread->apartment_state = ThreadApartmentState_Unknown;
620 thread->managed_id = get_next_managed_thread_id ();
621 if (mono_gc_is_moving ()) {
622 thread->thread_pinning_ref = thread;
623 MONO_GC_REGISTER_ROOT_PINNING (thread->thread_pinning_ref, MONO_ROOT_SOURCE_THREADING, "thread pinning reference");
630 init_root_domain_thread (MonoInternalThread *thread, MonoThread *candidate, MonoError *error)
632 MonoDomain *domain = mono_get_root_domain ();
634 mono_error_init (error);
635 if (!candidate || candidate->obj.vtable->domain != domain) {
636 candidate = new_thread_with_internal (domain, thread, error);
637 return_val_if_nok (error, FALSE);
639 set_current_thread_for_domain (domain, thread, candidate);
640 g_assert (!thread->root_domain_thread);
641 MONO_OBJECT_SETREF (thread, root_domain_thread, candidate);
645 static guint32 WINAPI start_wrapper_internal(void *data)
648 MonoThreadInfo *info;
649 StartInfo *start_info = (StartInfo *)data;
650 guint32 (*start_func)(void *);
654 * We don't create a local to hold start_info->obj, so hopefully it won't get pinned during a
657 MonoInternalThread *internal = start_info->obj->internal_thread;
658 MonoObject *start_delegate = start_info->delegate;
659 MonoDomain *domain = start_info->obj->obj.vtable->domain;
661 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper", __func__, mono_native_thread_id_get ()));
663 /* We can be sure start_info->obj->tid and
664 * start_info->obj->handle have been set, because the thread
665 * was created suspended, and these values were set before the
669 info = mono_thread_info_current ();
671 internal->thread_info = info;
672 internal->small_id = info->small_id;
676 SET_CURRENT_OBJECT (internal);
678 /* Every thread references the appdomain which created it */
679 mono_thread_push_appdomain_ref (domain);
681 if (!mono_domain_set (domain, FALSE)) {
682 /* No point in raising an appdomain_unloaded exception here */
683 /* FIXME: Cleanup here */
684 mono_thread_pop_appdomain_ref ();
688 start_func = start_info->func;
689 start_arg = start_info->obj->start_obj;
691 start_arg = start_info->start_arg;
693 /* We have to do this here because mono_thread_new_init()
694 requires that root_domain_thread is set up. */
695 thread_adjust_static_data (internal);
696 init_root_domain_thread (internal, start_info->obj, &error);
697 mono_error_raise_exception (&error); /* FIXME don't raise here */
699 /* This MUST be called before any managed code can be
700 * executed, as it calls the callback function that (for the
701 * jit) sets the lmf marker.
703 mono_thread_new_init (tid, &tid, start_func);
704 internal->stack_ptr = &tid;
705 if (domain != mono_get_root_domain ())
706 set_current_thread_for_domain (domain, internal, start_info->obj);
708 LIBGC_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT",%d) Setting thread stack to %p", __func__, mono_native_thread_id_get (), getpid (), thread->stack_ptr));
710 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Setting current_object_key to %p", __func__, mono_native_thread_id_get (), internal));
712 /* On 2.0 profile (and higher), set explicitly since state might have been
714 if (internal->apartment_state == ThreadApartmentState_Unknown)
715 internal->apartment_state = ThreadApartmentState_MTA;
717 mono_thread_init_apartment_state ();
719 if(internal->start_notify!=NULL) {
720 /* Let the thread that called Start() know we're
723 ReleaseSemaphore (internal->start_notify, 1, NULL);
727 THREAD_DEBUG (g_message ("%s: start_wrapper for %"G_GSIZE_FORMAT, __func__,
731 * Call this after calling start_notify, since the profiler callback might want
732 * to lock the thread, and the lock is held by thread_start () which waits for
735 mono_profiler_thread_start (tid);
737 /* if the name was set before starting, we didn't invoke the profiler callback */
738 if (internal->name) {
739 char *tname = g_utf16_to_utf8 (internal->name, internal->name_len, NULL, NULL, NULL);
740 mono_profiler_thread_name (internal->tid, tname);
741 mono_native_thread_set_name (MONO_UINT_TO_NATIVE_THREAD_ID (internal->tid), tname);
745 /* start_func is set only for unmanaged start functions */
747 start_func (start_arg);
750 g_assert (start_delegate != NULL);
751 args [0] = start_arg;
752 /* we may want to handle the exception here. See comment below on unhandled exceptions */
753 mono_runtime_delegate_invoke_checked (start_delegate, args, &error);
754 mono_error_raise_exception (&error); /* FIXME don't raise here */
757 /* If the thread calls ExitThread at all, this remaining code
758 * will not be executed, but the main thread will eventually
759 * call thread_cleanup() on this thread's behalf.
762 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper terminating", __func__, mono_native_thread_id_get ()));
764 /* Do any cleanup needed for apartment state. This
765 * cannot be done in thread_cleanup since thread_cleanup could be
766 * called for a thread other than the current thread.
767 * mono_thread_cleanup_apartment_state cleans up apartment
768 * for the current thead */
769 mono_thread_cleanup_apartment_state ();
771 thread_cleanup (internal);
775 /* Remove the reference to the thread object in the TLS data,
776 * so the thread object can be finalized. This won't be
777 * reached if the thread threw an uncaught exception, so those
778 * thread handles will stay referenced :-( (This is due to
779 * missing support for scanning thread-specific data in the
780 * Boehm GC - the io-layer keeps a GC-visible hash of pointers
783 SET_CURRENT_OBJECT (NULL);
788 static guint32 WINAPI start_wrapper(void *data)
792 /* Avoid scanning the frames above this frame during a GC */
793 mono_gc_set_stack_end ((void*)&dummy);
795 return start_wrapper_internal (data);
801 * Common thread creation code.
802 * LOCKING: Acquires the threads lock.
805 create_thread (MonoThread *thread, MonoInternalThread *internal, StartInfo *start_info, gboolean threadpool_thread, guint32 stack_size,
808 HANDLE thread_handle;
809 MonoNativeThreadId tid;
810 guint32 create_flags;
813 * Join joinable threads to prevent running out of threads since the finalizer
814 * thread might be blocked/backlogged.
816 mono_threads_join_threads ();
818 mono_error_init (error);
820 mono_threads_lock ();
823 mono_threads_unlock ();
826 if (threads_starting_up == NULL) {
827 MONO_GC_REGISTER_ROOT_FIXED (threads_starting_up, MONO_ROOT_SOURCE_THREADING, "starting threads table");
828 threads_starting_up = mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_KEY_VALUE_GC, MONO_ROOT_SOURCE_THREADING, "starting threads table");
830 mono_g_hash_table_insert (threads_starting_up, thread, thread);
831 mono_threads_unlock ();
833 internal->start_notify = CreateSemaphore (NULL, 0, 0x7fffffff, NULL);
834 if (!internal->start_notify) {
835 mono_threads_lock ();
836 mono_g_hash_table_remove (threads_starting_up, thread);
837 mono_threads_unlock ();
838 g_warning ("%s: CreateSemaphore error 0x%x", __func__, GetLastError ());
844 stack_size = default_stacksize_for_thread (internal);
846 /* Create suspended, so we can do some housekeeping before the thread
849 create_flags = CREATE_SUSPENDED;
851 thread_handle = mono_threads_create_thread ((LPTHREAD_START_ROUTINE)start_wrapper, start_info,
852 stack_size, create_flags, &tid);
854 if (thread_handle == NULL) {
855 /* The thread couldn't be created, so set an exception */
856 mono_threads_lock ();
857 mono_g_hash_table_remove (threads_starting_up, thread);
858 mono_threads_unlock ();
860 mono_error_set_execution_engine (error, "Couldn't create thread. Error 0x%x", GetLastError());
863 THREAD_DEBUG (g_message ("%s: Started thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread_handle));
865 internal->handle = thread_handle;
866 internal->tid = MONO_NATIVE_THREAD_ID_TO_UINT (tid);
868 internal->threadpool_thread = threadpool_thread;
869 if (threadpool_thread)
870 mono_thread_set_state (internal, ThreadState_Background);
872 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Launching thread %p (%"G_GSIZE_FORMAT")", __func__, mono_native_thread_id_get (), internal, (gsize)internal->tid));
874 /* Only store the handle when the thread is about to be
875 * launched, to avoid the main thread deadlocking while trying
876 * to clean up a thread that will never be signalled.
878 if (!handle_store (thread, FALSE))
881 mono_thread_info_resume (tid);
883 if (internal->start_notify) {
885 * Wait for the thread to set up its TLS data etc, so
886 * theres no potential race condition if someone tries
887 * to look up the data believing the thread has
890 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") waiting for thread %p (%"G_GSIZE_FORMAT") to start", __func__, mono_native_thread_id_get (), internal, (gsize)internal->tid));
893 WaitForSingleObjectEx (internal->start_notify, INFINITE, FALSE);
896 CloseHandle (internal->start_notify);
897 internal->start_notify = NULL;
900 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Done launching thread %p (%"G_GSIZE_FORMAT")", __func__, mono_native_thread_id_get (), internal, (gsize)internal->tid));
905 void mono_thread_new_init (intptr_t tid, gpointer stack_start, gpointer func)
907 if (mono_thread_start_cb) {
908 mono_thread_start_cb (tid, stack_start, func);
912 void mono_threads_set_default_stacksize (guint32 stacksize)
914 default_stacksize = stacksize;
917 guint32 mono_threads_get_default_stacksize (void)
919 return default_stacksize;
923 * mono_thread_create_internal:
925 * ARG should not be a GC reference.
928 mono_thread_create_internal (MonoDomain *domain, gpointer func, gpointer arg, gboolean threadpool_thread, guint32 stack_size, MonoError *error)
931 MonoInternalThread *internal;
932 StartInfo *start_info;
935 mono_error_init (error);
937 thread = create_thread_object (domain, error);
938 return_val_if_nok (error, NULL);
940 internal = create_internal_thread (error);
941 return_val_if_nok (error, NULL);
943 MONO_OBJECT_SETREF (thread, internal_thread, internal);
945 start_info = g_new0 (StartInfo, 1);
946 start_info->func = (guint32 (*)(void *))func;
947 start_info->obj = thread;
948 start_info->start_arg = arg;
950 res = create_thread (thread, internal, start_info, threadpool_thread, stack_size, error);
951 return_val_if_nok (error, NULL);
953 /* Check that the managed and unmanaged layout of MonoInternalThread matches */
954 #ifndef MONO_CROSS_COMPILE
955 if (mono_check_corlib_version () == NULL)
956 g_assert (((char*)&internal->unused2 - (char*)internal) == mono_defaults.internal_thread_class->fields [mono_defaults.internal_thread_class->field.count - 1].offset);
963 mono_thread_create (MonoDomain *domain, gpointer func, gpointer arg)
966 if (!mono_thread_create_checked (domain, func, arg, &error))
967 mono_error_cleanup (&error);
971 mono_thread_create_checked (MonoDomain *domain, gpointer func, gpointer arg, MonoError *error)
973 return (NULL != mono_thread_create_internal (domain, func, arg, FALSE, 0, error));
977 mono_thread_attach (MonoDomain *domain)
980 MonoThread *thread = mono_thread_attach_full (domain, FALSE, &error);
981 mono_error_raise_exception (&error);
987 mono_thread_attach_full (MonoDomain *domain, gboolean force_attach, MonoError *error)
989 MonoThreadInfo *info;
990 MonoInternalThread *thread;
991 MonoThread *current_thread;
992 HANDLE thread_handle;
993 MonoNativeThreadId tid;
995 mono_error_init (error);
997 if ((thread = mono_thread_internal_current ())) {
998 if (domain != mono_domain_get ())
999 mono_domain_set (domain, TRUE);
1000 /* Already attached */
1001 return mono_thread_current ();
1004 if (!mono_gc_register_thread (&domain)) {
1005 g_error ("Thread %"G_GSIZE_FORMAT" calling into managed code is not registered with the GC. On UNIX, this can be fixed by #include-ing <gc.h> before <pthread.h> in the file containing the thread creation code.", mono_native_thread_id_get ());
1008 thread = create_internal_thread (error);
1009 if (!mono_error_ok (error))
1012 thread_handle = mono_thread_info_open_handle ();
1013 g_assert (thread_handle);
1015 tid=mono_native_thread_id_get ();
1017 thread->handle = thread_handle;
1018 thread->tid = MONO_NATIVE_THREAD_ID_TO_UINT (tid);
1019 thread->stack_ptr = &tid;
1021 THREAD_DEBUG (g_message ("%s: Attached thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread_handle));
1023 info = mono_thread_info_current ();
1025 thread->thread_info = info;
1026 thread->small_id = info->small_id;
1028 current_thread = new_thread_with_internal (domain, thread, error);
1029 if (!mono_error_ok (error))
1032 if (!handle_store (current_thread, force_attach)) {
1033 /* Mono is shutting down, so just wait for the end */
1035 mono_thread_info_sleep (10000, NULL);
1038 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Setting current_object_key to %p", __func__, mono_native_thread_id_get (), thread));
1040 SET_CURRENT_OBJECT (thread);
1041 mono_domain_set (domain, TRUE);
1043 thread_adjust_static_data (thread);
1045 init_root_domain_thread (thread, current_thread, error);
1046 return_val_if_nok (error, NULL);
1048 if (domain != mono_get_root_domain ())
1049 set_current_thread_for_domain (domain, thread, current_thread);
1052 if (mono_thread_attach_cb) {
1056 mono_thread_info_get_stack_bounds (&staddr, &stsize);
1059 mono_thread_attach_cb (MONO_NATIVE_THREAD_ID_TO_UINT (tid), &tid);
1061 mono_thread_attach_cb (MONO_NATIVE_THREAD_ID_TO_UINT (tid), staddr + stsize);
1064 /* Can happen when we attach the profiler helper thread in order to heapshot. */
1065 if (!info->tools_thread)
1066 // FIXME: Need a separate callback
1067 mono_profiler_thread_start (MONO_NATIVE_THREAD_ID_TO_UINT (tid));
1069 return current_thread;
1073 mono_thread_detach_internal (MonoInternalThread *thread)
1075 g_return_if_fail (thread != NULL);
1077 THREAD_DEBUG (g_message ("%s: mono_thread_detach for %p (%"G_GSIZE_FORMAT")", __func__, thread, (gsize)thread->tid));
1079 thread_cleanup (thread);
1081 SET_CURRENT_OBJECT (NULL);
1082 mono_domain_unset ();
1084 /* Don't need to CloseHandle this thread, even though we took a
1085 * reference in mono_thread_attach (), because the GC will do it
1086 * when the Thread object is finalised.
1091 mono_thread_detach (MonoThread *thread)
1094 mono_thread_detach_internal (thread->internal_thread);
1098 * mono_thread_detach_if_exiting:
1100 * Detach the current thread from the runtime if it is exiting, i.e. it is running pthread dtors.
1101 * This should be used at the end of embedding code which calls into managed code, and which
1102 * can be called from pthread dtors, like dealloc: implementations in objective-c.
1105 mono_thread_detach_if_exiting (void)
1107 if (mono_thread_info_is_exiting ()) {
1108 MonoInternalThread *thread;
1110 thread = mono_thread_internal_current ();
1112 mono_thread_detach_internal (thread);
1113 mono_thread_info_detach ();
1121 MonoInternalThread *thread = mono_thread_internal_current ();
1123 THREAD_DEBUG (g_message ("%s: mono_thread_exit for %p (%"G_GSIZE_FORMAT")", __func__, thread, (gsize)thread->tid));
1125 thread_cleanup (thread);
1126 SET_CURRENT_OBJECT (NULL);
1127 mono_domain_unset ();
1129 /* we could add a callback here for embedders to use. */
1130 if (mono_thread_get_main () && (thread == mono_thread_get_main ()->internal_thread))
1131 exit (mono_environment_exitcode_get ());
1132 mono_thread_info_exit ();
1136 ves_icall_System_Threading_Thread_ConstructInternalThread (MonoThread *this_obj)
1139 MonoInternalThread *internal;
1141 internal = create_internal_thread (&error);
1142 if (mono_error_set_pending_exception (&error))
1145 internal->state = ThreadState_Unstarted;
1147 InterlockedCompareExchangePointer ((volatile gpointer *)&this_obj->internal_thread, internal, NULL);
1151 ves_icall_System_Threading_Thread_Thread_internal (MonoThread *this_obj,
1155 StartInfo *start_info;
1156 MonoInternalThread *internal;
1159 THREAD_DEBUG (g_message("%s: Trying to start a new thread: this (%p) start (%p)", __func__, this_obj, start));
1161 if (!this_obj->internal_thread)
1162 ves_icall_System_Threading_Thread_ConstructInternalThread (this_obj);
1163 internal = this_obj->internal_thread;
1165 LOCK_THREAD (internal);
1167 if ((internal->state & ThreadState_Unstarted) == 0) {
1168 UNLOCK_THREAD (internal);
1169 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has already been started."));
1173 if ((internal->state & ThreadState_Aborted) != 0) {
1174 UNLOCK_THREAD (internal);
1177 /* This is freed in start_wrapper */
1178 start_info = g_new0 (StartInfo, 1);
1179 start_info->func = NULL;
1180 start_info->start_arg = NULL;
1181 start_info->delegate = start;
1182 start_info->obj = this_obj;
1183 g_assert (this_obj->obj.vtable->domain == mono_domain_get ());
1185 res = create_thread (this_obj, internal, start_info, FALSE, 0, &error);
1187 mono_error_cleanup (&error);
1188 UNLOCK_THREAD (internal);
1192 internal->state &= ~ThreadState_Unstarted;
1194 THREAD_DEBUG (g_message ("%s: Started thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread));
1196 UNLOCK_THREAD (internal);
1197 return internal->handle;
1201 * This is called from the finalizer of the internal thread object.
1204 ves_icall_System_Threading_InternalThread_Thread_free_internal (MonoInternalThread *this_obj, HANDLE thread)
1206 THREAD_DEBUG (g_message ("%s: Closing thread %p, handle %p", __func__, this, thread));
1209 * Since threads keep a reference to their thread object while running, by the time this function is called,
1210 * the thread has already exited/detached, i.e. thread_cleanup () has ran. The exception is during shutdown,
1211 * when thread_cleanup () can be called after this.
1214 CloseHandle (thread);
1216 if (this_obj->synch_cs) {
1217 MonoCoopMutex *synch_cs = this_obj->synch_cs;
1218 this_obj->synch_cs = NULL;
1219 mono_coop_mutex_destroy (synch_cs);
1223 if (this_obj->name) {
1224 void *name = this_obj->name;
1225 this_obj->name = NULL;
1231 ves_icall_System_Threading_Thread_Sleep_internal(gint32 ms)
1234 MonoInternalThread *thread = mono_thread_internal_current ();
1236 THREAD_DEBUG (g_message ("%s: Sleeping for %d ms", __func__, ms));
1238 if (mono_thread_current_check_pending_interrupt ())
1242 gboolean alerted = FALSE;
1244 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1246 res = mono_thread_info_sleep (ms, &alerted);
1248 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1251 MonoException* exc = mono_thread_execute_interruption ();
1253 mono_set_pending_exception (exc);
1266 void ves_icall_System_Threading_Thread_SpinWait_nop (void)
1271 ves_icall_System_Threading_Thread_GetDomainID (void)
1273 return mono_domain_get()->domain_id;
1277 ves_icall_System_Threading_Thread_Yield (void)
1279 return mono_thread_info_yield ();
1283 * mono_thread_get_name:
1285 * Return the name of the thread. NAME_LEN is set to the length of the name.
1286 * Return NULL if the thread has no name. The returned memory is owned by the
1290 mono_thread_get_name (MonoInternalThread *this_obj, guint32 *name_len)
1294 LOCK_THREAD (this_obj);
1296 if (!this_obj->name) {
1300 *name_len = this_obj->name_len;
1301 res = g_new (gunichar2, this_obj->name_len);
1302 memcpy (res, this_obj->name, sizeof (gunichar2) * this_obj->name_len);
1305 UNLOCK_THREAD (this_obj);
1311 * mono_thread_get_name_utf8:
1313 * Return the name of the thread in UTF-8.
1314 * Return NULL if the thread has no name.
1315 * The returned memory is owned by the caller.
1318 mono_thread_get_name_utf8 (MonoThread *thread)
1323 MonoInternalThread *internal = thread->internal_thread;
1324 if (internal == NULL)
1327 LOCK_THREAD (internal);
1329 char *tname = g_utf16_to_utf8 (internal->name, internal->name_len, NULL, NULL, NULL);
1331 UNLOCK_THREAD (internal);
1337 * mono_thread_get_managed_id:
1339 * Return the Thread.ManagedThreadId value of `thread`.
1340 * Returns -1 if `thread` is NULL.
1343 mono_thread_get_managed_id (MonoThread *thread)
1348 MonoInternalThread *internal = thread->internal_thread;
1349 if (internal == NULL)
1352 int32_t id = internal->managed_id;
1358 ves_icall_System_Threading_Thread_GetName_internal (MonoInternalThread *this_obj)
1363 mono_error_init (&error);
1365 LOCK_THREAD (this_obj);
1367 if (!this_obj->name)
1370 str = mono_string_new_utf16_checked (mono_domain_get (), this_obj->name, this_obj->name_len, &error);
1372 UNLOCK_THREAD (this_obj);
1374 if (mono_error_set_pending_exception (&error))
1381 mono_thread_set_name_internal (MonoInternalThread *this_obj, MonoString *name, gboolean permanent, MonoError *error)
1383 LOCK_THREAD (this_obj);
1385 mono_error_init (error);
1387 if ((this_obj->flags & MONO_THREAD_FLAG_NAME_SET)) {
1388 UNLOCK_THREAD (this_obj);
1390 mono_error_set_invalid_operation (error, "Thread.Name can only be set once.");
1393 if (this_obj->name) {
1394 g_free (this_obj->name);
1395 this_obj->name_len = 0;
1398 this_obj->name = g_new (gunichar2, mono_string_length (name));
1399 memcpy (this_obj->name, mono_string_chars (name), mono_string_length (name) * 2);
1400 this_obj->name_len = mono_string_length (name);
1403 this_obj->flags |= MONO_THREAD_FLAG_NAME_SET;
1406 this_obj->name = NULL;
1409 UNLOCK_THREAD (this_obj);
1411 if (this_obj->name && this_obj->tid) {
1412 char *tname = mono_string_to_utf8 (name);
1413 mono_profiler_thread_name (this_obj->tid, tname);
1414 mono_native_thread_set_name (thread_get_tid (this_obj), tname);
1420 ves_icall_System_Threading_Thread_SetName_internal (MonoInternalThread *this_obj, MonoString *name)
1423 mono_thread_set_name_internal (this_obj, name, TRUE, &error);
1424 mono_error_set_pending_exception (&error);
1428 * ves_icall_System_Threading_Thread_GetPriority_internal:
1429 * @param this_obj: The MonoInternalThread on which to operate.
1431 * Gets the priority of the given thread.
1432 * @return: The priority of the given thread.
1435 ves_icall_System_Threading_Thread_GetPriority (MonoThread *this_obj)
1438 MonoInternalThread *internal = this_obj->internal_thread;
1440 LOCK_THREAD (internal);
1441 priority = GetThreadPriority (internal->handle) + 2;
1442 UNLOCK_THREAD (internal);
1447 * ves_icall_System_Threading_Thread_SetPriority_internal:
1448 * @param this_obj: The MonoInternalThread on which to operate.
1449 * @param priority: The priority to set.
1451 * Sets the priority of the given thread.
1454 ves_icall_System_Threading_Thread_SetPriority (MonoThread *this_obj, int priority)
1456 MonoInternalThread *internal = this_obj->internal_thread;
1458 LOCK_THREAD (internal);
1459 SetThreadPriority (internal->handle, priority - 2);
1460 UNLOCK_THREAD (internal);
1463 /* If the array is already in the requested domain, we just return it,
1464 otherwise we return a copy in that domain. */
1466 byte_array_to_domain (MonoArray *arr, MonoDomain *domain, MonoError *error)
1470 mono_error_init (error);
1474 if (mono_object_domain (arr) == domain)
1477 copy = mono_array_new_checked (domain, mono_defaults.byte_class, arr->max_length, error);
1478 memmove (mono_array_addr (copy, guint8, 0), mono_array_addr (arr, guint8, 0), arr->max_length);
1483 ves_icall_System_Threading_Thread_ByteArrayToRootDomain (MonoArray *arr)
1486 MonoArray *result = byte_array_to_domain (arr, mono_get_root_domain (), &error);
1487 mono_error_set_pending_exception (&error);
1492 ves_icall_System_Threading_Thread_ByteArrayToCurrentDomain (MonoArray *arr)
1495 MonoArray *result = byte_array_to_domain (arr, mono_domain_get (), &error);
1496 mono_error_set_pending_exception (&error);
1501 mono_thread_current (void)
1504 MonoDomain *domain = mono_domain_get ();
1505 MonoInternalThread *internal = mono_thread_internal_current ();
1506 MonoThread **current_thread_ptr;
1508 g_assert (internal);
1509 current_thread_ptr = get_current_thread_ptr_for_domain (domain, internal);
1511 if (!*current_thread_ptr) {
1512 g_assert (domain != mono_get_root_domain ());
1513 *current_thread_ptr = new_thread_with_internal (domain, internal, &error);
1514 mono_error_raise_exception (&error); /* FIXME don't raise here */
1516 return *current_thread_ptr;
1519 /* Return the thread object belonging to INTERNAL in the current domain */
1521 mono_thread_current_for_thread (MonoInternalThread *internal)
1524 MonoDomain *domain = mono_domain_get ();
1525 MonoThread **current_thread_ptr;
1527 g_assert (internal);
1528 current_thread_ptr = get_current_thread_ptr_for_domain (domain, internal);
1530 if (!*current_thread_ptr) {
1531 g_assert (domain != mono_get_root_domain ());
1532 *current_thread_ptr = new_thread_with_internal (domain, internal, &error);
1533 mono_error_raise_exception (&error); /* FIXME don't raise here */
1535 return *current_thread_ptr;
1539 mono_thread_internal_current (void)
1541 MonoInternalThread *res = GET_CURRENT_OBJECT ();
1542 THREAD_DEBUG (g_message ("%s: returning %p", __func__, res));
1547 ves_icall_System_Threading_Thread_Join_internal(MonoThread *this_obj, int ms)
1549 MonoInternalThread *thread = this_obj->internal_thread;
1550 HANDLE handle = thread->handle;
1551 MonoInternalThread *cur_thread = mono_thread_internal_current ();
1554 if (mono_thread_current_check_pending_interrupt ())
1557 LOCK_THREAD (thread);
1559 if ((thread->state & ThreadState_Unstarted) != 0) {
1560 UNLOCK_THREAD (thread);
1562 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started."));
1566 UNLOCK_THREAD (thread);
1571 THREAD_DEBUG (g_message ("%s: joining thread handle %p, %d ms", __func__, handle, ms));
1573 mono_thread_set_state (cur_thread, ThreadState_WaitSleepJoin);
1576 ret=WaitForSingleObjectEx (handle, ms, TRUE);
1579 mono_thread_clr_state (cur_thread, ThreadState_WaitSleepJoin);
1581 if(ret==WAIT_OBJECT_0) {
1582 THREAD_DEBUG (g_message ("%s: join successful", __func__));
1587 THREAD_DEBUG (g_message ("%s: join failed", __func__));
1592 #define MANAGED_WAIT_FAILED 0x7fffffff
1595 map_native_wait_result_to_managed (gint32 val)
1597 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1598 return val == WAIT_FAILED ? MANAGED_WAIT_FAILED : val;
1602 mono_wait_uninterrupted (MonoInternalThread *thread, guint32 numhandles, gpointer *handles, gboolean waitall, gint32 ms, MonoError *error)
1610 mono_error_init (error);
1612 start = (ms == -1) ? 0 : mono_100ns_ticks ();
1615 if (numhandles != 1)
1616 ret = WaitForMultipleObjectsEx (numhandles, handles, waitall, wait, TRUE);
1618 ret = WaitForSingleObjectEx (handles [0], ms, TRUE);
1621 if (ret != WAIT_IO_COMPLETION)
1624 exc = mono_thread_execute_interruption ();
1626 mono_error_set_exception_instance (error, exc);
1633 /* Re-calculate ms according to the time passed */
1634 diff_ms = (gint32)((mono_100ns_ticks () - start) / 10000);
1635 if (diff_ms >= ms) {
1639 wait = ms - diff_ms;
1645 gint32 ves_icall_System_Threading_WaitHandle_WaitAll_internal(MonoArray *mono_handles, gint32 ms)
1652 MonoObject *waitHandle;
1653 MonoInternalThread *thread = mono_thread_internal_current ();
1655 /* Do this WaitSleepJoin check before creating objects */
1656 if (mono_thread_current_check_pending_interrupt ())
1657 return map_native_wait_result_to_managed (WAIT_FAILED);
1659 /* We fail in managed if the array has more than 64 elements */
1660 numhandles = (guint32)mono_array_length(mono_handles);
1661 handles = g_new0(HANDLE, numhandles);
1663 for(i = 0; i < numhandles; i++) {
1664 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
1665 handles [i] = mono_wait_handle_get_handle ((MonoWaitHandle *) waitHandle);
1672 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1674 ret = mono_wait_uninterrupted (thread, numhandles, handles, TRUE, ms, &error);
1676 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1680 mono_error_set_pending_exception (&error);
1682 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1683 return map_native_wait_result_to_managed (ret);
1686 gint32 ves_icall_System_Threading_WaitHandle_WaitAny_internal(MonoArray *mono_handles, gint32 ms)
1689 HANDLE handles [MAXIMUM_WAIT_OBJECTS];
1690 uintptr_t numhandles;
1693 MonoObject *waitHandle;
1694 MonoInternalThread *thread = mono_thread_internal_current ();
1696 /* Do this WaitSleepJoin check before creating objects */
1697 if (mono_thread_current_check_pending_interrupt ())
1698 return map_native_wait_result_to_managed (WAIT_FAILED);
1700 numhandles = mono_array_length(mono_handles);
1701 if (numhandles > MAXIMUM_WAIT_OBJECTS)
1702 return map_native_wait_result_to_managed (WAIT_FAILED);
1704 for(i = 0; i < numhandles; i++) {
1705 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
1706 handles [i] = mono_wait_handle_get_handle ((MonoWaitHandle *) waitHandle);
1713 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1715 ret = mono_wait_uninterrupted (thread, numhandles, handles, FALSE, ms, &error);
1717 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1719 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") returning %d", __func__, mono_native_thread_id_get (), ret));
1721 mono_error_set_pending_exception (&error);
1723 * These need to be here. See MSDN dos on WaitForMultipleObjects.
1725 if (ret >= WAIT_OBJECT_0 && ret <= WAIT_OBJECT_0 + numhandles - 1) {
1726 return map_native_wait_result_to_managed (ret - WAIT_OBJECT_0);
1728 else if (ret >= WAIT_ABANDONED_0 && ret <= WAIT_ABANDONED_0 + numhandles - 1) {
1729 return map_native_wait_result_to_managed (ret - WAIT_ABANDONED_0);
1732 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1733 return map_native_wait_result_to_managed (ret);
1737 gint32 ves_icall_System_Threading_WaitHandle_WaitOne_internal(HANDLE handle, gint32 ms)
1741 MonoInternalThread *thread = mono_thread_internal_current ();
1743 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") waiting for %p, %d ms", __func__, mono_native_thread_id_get (), handle, ms));
1749 if (mono_thread_current_check_pending_interrupt ())
1750 return map_native_wait_result_to_managed (WAIT_FAILED);
1752 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1754 ret = mono_wait_uninterrupted (thread, 1, &handle, FALSE, ms, &error);
1756 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1758 mono_error_set_pending_exception (&error);
1759 return map_native_wait_result_to_managed (ret == WAIT_FAILED);
1763 ves_icall_System_Threading_WaitHandle_SignalAndWait_Internal (HANDLE toSignal, HANDLE toWait, gint32 ms)
1766 MonoInternalThread *thread = mono_thread_internal_current ();
1771 if (mono_thread_current_check_pending_interrupt ())
1772 return map_native_wait_result_to_managed (WAIT_FAILED);
1774 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1777 ret = SignalObjectAndWait (toSignal, toWait, ms, TRUE);
1780 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1782 return map_native_wait_result_to_managed (ret);
1785 HANDLE ves_icall_System_Threading_Mutex_CreateMutex_internal (MonoBoolean owned, MonoString *name, MonoBoolean *created)
1792 mutex = CreateMutex (NULL, owned, NULL);
1794 mutex = CreateMutex (NULL, owned, mono_string_chars (name));
1796 if (GetLastError () == ERROR_ALREADY_EXISTS) {
1804 MonoBoolean ves_icall_System_Threading_Mutex_ReleaseMutex_internal (HANDLE handle ) {
1805 return(ReleaseMutex (handle));
1808 HANDLE ves_icall_System_Threading_Mutex_OpenMutex_internal (MonoString *name,
1814 *error = ERROR_SUCCESS;
1816 ret = OpenMutex (rights, FALSE, mono_string_chars (name));
1818 *error = GetLastError ();
1825 HANDLE ves_icall_System_Threading_Semaphore_CreateSemaphore_internal (gint32 initialCount, gint32 maximumCount, MonoString *name, MonoBoolean *created)
1832 sem = CreateSemaphore (NULL, initialCount, maximumCount, NULL);
1834 sem = CreateSemaphore (NULL, initialCount, maximumCount,
1835 mono_string_chars (name));
1837 if (GetLastError () == ERROR_ALREADY_EXISTS) {
1845 gint32 ves_icall_System_Threading_Semaphore_ReleaseSemaphore_internal (HANDLE handle, gint32 releaseCount, MonoBoolean *fail)
1849 *fail = !ReleaseSemaphore (handle, releaseCount, &prevcount);
1854 HANDLE ves_icall_System_Threading_Semaphore_OpenSemaphore_internal (MonoString *name, gint32 rights, gint32 *error)
1858 *error = ERROR_SUCCESS;
1860 ret = OpenSemaphore (rights, FALSE, mono_string_chars (name));
1862 *error = GetLastError ();
1868 HANDLE ves_icall_System_Threading_Events_CreateEvent_internal (MonoBoolean manual, MonoBoolean initial, MonoString *name, MonoBoolean *created)
1875 event = CreateEvent (NULL, manual, initial, NULL);
1877 event = CreateEvent (NULL, manual, initial,
1878 mono_string_chars (name));
1880 if (GetLastError () == ERROR_ALREADY_EXISTS) {
1888 gboolean ves_icall_System_Threading_Events_SetEvent_internal (HANDLE handle) {
1889 return (SetEvent(handle));
1892 gboolean ves_icall_System_Threading_Events_ResetEvent_internal (HANDLE handle) {
1893 return (ResetEvent(handle));
1897 ves_icall_System_Threading_Events_CloseEvent_internal (HANDLE handle) {
1898 CloseHandle (handle);
1901 HANDLE ves_icall_System_Threading_Events_OpenEvent_internal (MonoString *name,
1907 *error = ERROR_SUCCESS;
1909 ret = OpenEvent (rights, FALSE, mono_string_chars (name));
1911 *error = GetLastError ();
1917 gint32 ves_icall_System_Threading_Interlocked_Increment_Int (gint32 *location)
1919 return InterlockedIncrement (location);
1922 gint64 ves_icall_System_Threading_Interlocked_Increment_Long (gint64 *location)
1924 #if SIZEOF_VOID_P == 4
1925 if (G_UNLIKELY ((size_t)location & 0x7)) {
1927 mono_interlocked_lock ();
1930 mono_interlocked_unlock ();
1934 return InterlockedIncrement64 (location);
1937 gint32 ves_icall_System_Threading_Interlocked_Decrement_Int (gint32 *location)
1939 return InterlockedDecrement(location);
1942 gint64 ves_icall_System_Threading_Interlocked_Decrement_Long (gint64 * location)
1944 #if SIZEOF_VOID_P == 4
1945 if (G_UNLIKELY ((size_t)location & 0x7)) {
1947 mono_interlocked_lock ();
1950 mono_interlocked_unlock ();
1954 return InterlockedDecrement64 (location);
1957 gint32 ves_icall_System_Threading_Interlocked_Exchange_Int (gint32 *location, gint32 value)
1959 return InterlockedExchange(location, value);
1962 MonoObject * ves_icall_System_Threading_Interlocked_Exchange_Object (MonoObject **location, MonoObject *value)
1965 res = (MonoObject *) InterlockedExchangePointer((gpointer *) location, value);
1966 mono_gc_wbarrier_generic_nostore (location);
1970 gpointer ves_icall_System_Threading_Interlocked_Exchange_IntPtr (gpointer *location, gpointer value)
1972 return InterlockedExchangePointer(location, value);
1975 gfloat ves_icall_System_Threading_Interlocked_Exchange_Single (gfloat *location, gfloat value)
1977 IntFloatUnion val, ret;
1980 ret.ival = InterlockedExchange((gint32 *) location, val.ival);
1986 ves_icall_System_Threading_Interlocked_Exchange_Long (gint64 *location, gint64 value)
1988 #if SIZEOF_VOID_P == 4
1989 if (G_UNLIKELY ((size_t)location & 0x7)) {
1991 mono_interlocked_lock ();
1994 mono_interlocked_unlock ();
1998 return InterlockedExchange64 (location, value);
2002 ves_icall_System_Threading_Interlocked_Exchange_Double (gdouble *location, gdouble value)
2004 LongDoubleUnion val, ret;
2007 ret.ival = (gint64)InterlockedExchange64((gint64 *) location, val.ival);
2012 gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int(gint32 *location, gint32 value, gint32 comparand)
2014 return InterlockedCompareExchange(location, value, comparand);
2017 gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int_Success(gint32 *location, gint32 value, gint32 comparand, MonoBoolean *success)
2019 gint32 r = InterlockedCompareExchange(location, value, comparand);
2020 *success = r == comparand;
2024 MonoObject * ves_icall_System_Threading_Interlocked_CompareExchange_Object (MonoObject **location, MonoObject *value, MonoObject *comparand)
2027 res = (MonoObject *) InterlockedCompareExchangePointer((gpointer *) location, value, comparand);
2028 mono_gc_wbarrier_generic_nostore (location);
2032 gpointer ves_icall_System_Threading_Interlocked_CompareExchange_IntPtr(gpointer *location, gpointer value, gpointer comparand)
2034 return InterlockedCompareExchangePointer(location, value, comparand);
2037 gfloat ves_icall_System_Threading_Interlocked_CompareExchange_Single (gfloat *location, gfloat value, gfloat comparand)
2039 IntFloatUnion val, ret, cmp;
2042 cmp.fval = comparand;
2043 ret.ival = InterlockedCompareExchange((gint32 *) location, val.ival, cmp.ival);
2049 ves_icall_System_Threading_Interlocked_CompareExchange_Double (gdouble *location, gdouble value, gdouble comparand)
2051 #if SIZEOF_VOID_P == 8
2052 LongDoubleUnion val, comp, ret;
2055 comp.fval = comparand;
2056 ret.ival = (gint64)InterlockedCompareExchangePointer((gpointer *) location, (gpointer)val.ival, (gpointer)comp.ival);
2062 mono_interlocked_lock ();
2064 if (old == comparand)
2066 mono_interlocked_unlock ();
2073 ves_icall_System_Threading_Interlocked_CompareExchange_Long (gint64 *location, gint64 value, gint64 comparand)
2075 #if SIZEOF_VOID_P == 4
2076 if (G_UNLIKELY ((size_t)location & 0x7)) {
2078 mono_interlocked_lock ();
2080 if (old == comparand)
2082 mono_interlocked_unlock ();
2086 return InterlockedCompareExchange64 (location, value, comparand);
2090 ves_icall_System_Threading_Interlocked_CompareExchange_T (MonoObject **location, MonoObject *value, MonoObject *comparand)
2093 res = (MonoObject *)InterlockedCompareExchangePointer ((volatile gpointer *)location, value, comparand);
2094 mono_gc_wbarrier_generic_nostore (location);
2099 ves_icall_System_Threading_Interlocked_Exchange_T (MonoObject **location, MonoObject *value)
2102 MONO_CHECK_NULL (location, NULL);
2103 res = (MonoObject *)InterlockedExchangePointer ((volatile gpointer *)location, value);
2104 mono_gc_wbarrier_generic_nostore (location);
2109 ves_icall_System_Threading_Interlocked_Add_Int (gint32 *location, gint32 value)
2111 return InterlockedAdd (location, value);
2115 ves_icall_System_Threading_Interlocked_Add_Long (gint64 *location, gint64 value)
2117 #if SIZEOF_VOID_P == 4
2118 if (G_UNLIKELY ((size_t)location & 0x7)) {
2120 mono_interlocked_lock ();
2123 mono_interlocked_unlock ();
2127 return InterlockedAdd64 (location, value);
2131 ves_icall_System_Threading_Interlocked_Read_Long (gint64 *location)
2133 #if SIZEOF_VOID_P == 4
2134 if (G_UNLIKELY ((size_t)location & 0x7)) {
2136 mono_interlocked_lock ();
2138 mono_interlocked_unlock ();
2142 return InterlockedRead64 (location);
2146 ves_icall_System_Threading_Thread_MemoryBarrier (void)
2148 mono_memory_barrier ();
2152 ves_icall_System_Threading_Thread_ClrState (MonoInternalThread* this_obj, guint32 state)
2154 mono_thread_clr_state (this_obj, (MonoThreadState)state);
2156 if (state & ThreadState_Background) {
2157 /* If the thread changes the background mode, the main thread has to
2158 * be notified, since it has to rebuild the list of threads to
2161 SetEvent (background_change_event);
2166 ves_icall_System_Threading_Thread_SetState (MonoInternalThread* this_obj, guint32 state)
2168 mono_thread_set_state (this_obj, (MonoThreadState)state);
2170 if (state & ThreadState_Background) {
2171 /* If the thread changes the background mode, the main thread has to
2172 * be notified, since it has to rebuild the list of threads to
2175 SetEvent (background_change_event);
2180 ves_icall_System_Threading_Thread_GetState (MonoInternalThread* this_obj)
2184 LOCK_THREAD (this_obj);
2186 state = this_obj->state;
2188 UNLOCK_THREAD (this_obj);
2193 void ves_icall_System_Threading_Thread_Interrupt_internal (MonoThread *this_obj)
2195 MonoInternalThread *current;
2197 MonoInternalThread *thread = this_obj->internal_thread;
2199 LOCK_THREAD (thread);
2201 current = mono_thread_internal_current ();
2203 thread->thread_interrupt_requested = TRUE;
2204 throw_ = current != thread && (thread->state & ThreadState_WaitSleepJoin);
2206 UNLOCK_THREAD (thread);
2209 async_abort_internal (thread, FALSE);
2214 * mono_thread_current_check_pending_interrupt:
2216 * Checks if there's a interruption request and set the pending exception if so.
2218 * @returns true if a pending exception was set
2221 mono_thread_current_check_pending_interrupt (void)
2223 MonoInternalThread *thread = mono_thread_internal_current ();
2224 gboolean throw_ = FALSE;
2226 LOCK_THREAD (thread);
2228 if (thread->thread_interrupt_requested) {
2230 thread->thread_interrupt_requested = FALSE;
2233 UNLOCK_THREAD (thread);
2236 mono_set_pending_exception (mono_get_exception_thread_interrupted ());
2241 request_thread_abort (MonoInternalThread *thread, MonoObject *state)
2243 LOCK_THREAD (thread);
2245 if ((thread->state & ThreadState_AbortRequested) != 0 ||
2246 (thread->state & ThreadState_StopRequested) != 0 ||
2247 (thread->state & ThreadState_Stopped) != 0)
2249 UNLOCK_THREAD (thread);
2253 if ((thread->state & ThreadState_Unstarted) != 0) {
2254 thread->state |= ThreadState_Aborted;
2255 UNLOCK_THREAD (thread);
2259 thread->state |= ThreadState_AbortRequested;
2260 if (thread->abort_state_handle)
2261 mono_gchandle_free (thread->abort_state_handle);
2263 thread->abort_state_handle = mono_gchandle_new (state, FALSE);
2264 g_assert (thread->abort_state_handle);
2266 thread->abort_state_handle = 0;
2268 thread->abort_exc = NULL;
2270 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Abort requested for %p (%"G_GSIZE_FORMAT")", __func__, mono_native_thread_id_get (), thread, (gsize)thread->tid));
2272 /* During shutdown, we can't wait for other threads */
2274 /* Make sure the thread is awake */
2275 mono_thread_resume (thread);
2277 UNLOCK_THREAD (thread);
2282 ves_icall_System_Threading_Thread_Abort (MonoInternalThread *thread, MonoObject *state)
2284 if (!request_thread_abort (thread, state))
2287 if (thread == mono_thread_internal_current ()) {
2289 self_abort_internal (&error);
2290 mono_error_set_pending_exception (&error);
2292 async_abort_internal (thread, TRUE);
2297 * mono_thread_internal_abort:
2299 * Request thread @thread to be aborted.
2301 * @thread MUST NOT be the current thread.
2304 mono_thread_internal_abort (MonoInternalThread *thread)
2306 g_assert (thread != mono_thread_internal_current ());
2308 if (!request_thread_abort (thread, NULL))
2310 async_abort_internal (thread, TRUE);
2314 ves_icall_System_Threading_Thread_ResetAbort (MonoThread *this_obj)
2316 MonoInternalThread *thread = mono_thread_internal_current ();
2317 gboolean was_aborting;
2319 LOCK_THREAD (thread);
2320 was_aborting = thread->state & ThreadState_AbortRequested;
2321 thread->state &= ~ThreadState_AbortRequested;
2322 UNLOCK_THREAD (thread);
2324 if (!was_aborting) {
2325 const char *msg = "Unable to reset abort because no abort was requested";
2326 mono_set_pending_exception (mono_get_exception_thread_state (msg));
2329 thread->abort_exc = NULL;
2330 if (thread->abort_state_handle) {
2331 mono_gchandle_free (thread->abort_state_handle);
2332 /* This is actually not necessary - the handle
2333 only counts if the exception is set */
2334 thread->abort_state_handle = 0;
2339 mono_thread_internal_reset_abort (MonoInternalThread *thread)
2341 LOCK_THREAD (thread);
2343 thread->state &= ~ThreadState_AbortRequested;
2345 if (thread->abort_exc) {
2346 thread->abort_exc = NULL;
2347 if (thread->abort_state_handle) {
2348 mono_gchandle_free (thread->abort_state_handle);
2349 /* This is actually not necessary - the handle
2350 only counts if the exception is set */
2351 thread->abort_state_handle = 0;
2355 UNLOCK_THREAD (thread);
2359 ves_icall_System_Threading_Thread_GetAbortExceptionState (MonoThread *this_obj)
2362 MonoInternalThread *thread = this_obj->internal_thread;
2363 MonoObject *state, *deserialized = NULL;
2366 if (!thread->abort_state_handle)
2369 state = mono_gchandle_get_target (thread->abort_state_handle);
2372 domain = mono_domain_get ();
2373 if (mono_object_domain (state) == domain)
2376 deserialized = mono_object_xdomain_representation (state, domain, &error);
2378 if (!deserialized) {
2379 MonoException *invalid_op_exc = mono_get_exception_invalid_operation ("Thread.ExceptionState cannot access an ExceptionState from a different AppDomain");
2380 if (!is_ok (&error)) {
2381 MonoObject *exc = (MonoObject*)mono_error_convert_to_exception (&error);
2382 MONO_OBJECT_SETREF (invalid_op_exc, inner_ex, exc);
2384 mono_set_pending_exception (invalid_op_exc);
2388 return deserialized;
2392 mono_thread_suspend (MonoInternalThread *thread)
2394 LOCK_THREAD (thread);
2396 if ((thread->state & ThreadState_Unstarted) != 0 ||
2397 (thread->state & ThreadState_Aborted) != 0 ||
2398 (thread->state & ThreadState_Stopped) != 0)
2400 UNLOCK_THREAD (thread);
2404 if ((thread->state & ThreadState_Suspended) != 0 ||
2405 (thread->state & ThreadState_SuspendRequested) != 0 ||
2406 (thread->state & ThreadState_StopRequested) != 0)
2408 UNLOCK_THREAD (thread);
2412 thread->state |= ThreadState_SuspendRequested;
2414 if (thread == mono_thread_internal_current ()) {
2415 /* calls UNLOCK_THREAD (thread) */
2416 self_suspend_internal ();
2418 /* calls UNLOCK_THREAD (thread) */
2419 async_suspend_internal (thread, FALSE);
2426 ves_icall_System_Threading_Thread_Suspend (MonoThread *this_obj)
2428 if (!mono_thread_suspend (this_obj->internal_thread)) {
2429 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2434 /* LOCKING: LOCK_THREAD(thread) must be held */
2436 mono_thread_resume (MonoInternalThread *thread)
2438 if ((thread->state & ThreadState_SuspendRequested) != 0) {
2439 thread->state &= ~ThreadState_SuspendRequested;
2443 if ((thread->state & ThreadState_Suspended) == 0 ||
2444 (thread->state & ThreadState_Unstarted) != 0 ||
2445 (thread->state & ThreadState_Aborted) != 0 ||
2446 (thread->state & ThreadState_Stopped) != 0)
2451 UNLOCK_THREAD (thread);
2453 /* Awake the thread */
2454 if (!mono_thread_info_resume (thread_get_tid (thread)))
2457 LOCK_THREAD (thread);
2459 thread->state &= ~ThreadState_Suspended;
2465 ves_icall_System_Threading_Thread_Resume (MonoThread *thread)
2467 if (!thread->internal_thread) {
2468 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2470 LOCK_THREAD (thread->internal_thread);
2471 if (!mono_thread_resume (thread->internal_thread))
2472 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2473 UNLOCK_THREAD (thread->internal_thread);
2478 mono_threads_is_critical_method (MonoMethod *method)
2480 switch (method->wrapper_type) {
2481 case MONO_WRAPPER_RUNTIME_INVOKE:
2482 case MONO_WRAPPER_XDOMAIN_INVOKE:
2483 case MONO_WRAPPER_XDOMAIN_DISPATCH:
2490 find_wrapper (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
2495 if (mono_threads_is_critical_method (m)) {
2496 *((gboolean*)data) = TRUE;
2503 is_running_protected_wrapper (void)
2505 gboolean found = FALSE;
2506 mono_stack_walk (find_wrapper, &found);
2511 request_thread_stop (MonoInternalThread *thread)
2513 LOCK_THREAD (thread);
2515 if ((thread->state & ThreadState_StopRequested) != 0 ||
2516 (thread->state & ThreadState_Stopped) != 0)
2518 UNLOCK_THREAD (thread);
2522 /* Make sure the thread is awake */
2523 mono_thread_resume (thread);
2525 thread->state |= ThreadState_StopRequested;
2526 thread->state &= ~ThreadState_AbortRequested;
2528 UNLOCK_THREAD (thread);
2533 * mono_thread_internal_stop:
2535 * Request thread @thread to stop.
2537 * @thread MUST NOT be the current thread.
2540 mono_thread_internal_stop (MonoInternalThread *thread)
2542 g_assert (thread != mono_thread_internal_current ());
2544 if (!request_thread_stop (thread))
2547 async_abort_internal (thread, TRUE);
2550 void mono_thread_stop (MonoThread *thread)
2552 MonoInternalThread *internal = thread->internal_thread;
2554 if (!request_thread_stop (internal))
2557 if (internal == mono_thread_internal_current ()) {
2559 self_abort_internal (&error);
2561 This function is part of the embeding API and has no way to return the exception
2562 to be thrown. So what we do is keep the old behavior and raise the exception.
2564 mono_error_raise_exception (&error);
2566 async_abort_internal (internal, TRUE);
2571 ves_icall_System_Threading_Thread_VolatileRead1 (void *ptr)
2573 gint8 tmp = *(volatile gint8 *)ptr;
2574 mono_memory_barrier ();
2579 ves_icall_System_Threading_Thread_VolatileRead2 (void *ptr)
2581 gint16 tmp = *(volatile gint16 *)ptr;
2582 mono_memory_barrier ();
2587 ves_icall_System_Threading_Thread_VolatileRead4 (void *ptr)
2589 gint32 tmp = *(volatile gint32 *)ptr;
2590 mono_memory_barrier ();
2595 ves_icall_System_Threading_Thread_VolatileRead8 (void *ptr)
2597 gint64 tmp = *(volatile gint64 *)ptr;
2598 mono_memory_barrier ();
2603 ves_icall_System_Threading_Thread_VolatileReadIntPtr (void *ptr)
2605 volatile void *tmp = *(volatile void **)ptr;
2606 mono_memory_barrier ();
2607 return (void *) tmp;
2611 ves_icall_System_Threading_Thread_VolatileReadObject (void *ptr)
2613 volatile MonoObject *tmp = *(volatile MonoObject **)ptr;
2614 mono_memory_barrier ();
2615 return (MonoObject *) tmp;
2619 ves_icall_System_Threading_Thread_VolatileReadDouble (void *ptr)
2621 double tmp = *(volatile double *)ptr;
2622 mono_memory_barrier ();
2627 ves_icall_System_Threading_Thread_VolatileReadFloat (void *ptr)
2629 float tmp = *(volatile float *)ptr;
2630 mono_memory_barrier ();
2635 ves_icall_System_Threading_Volatile_Read1 (void *ptr)
2637 return InterlockedRead8 ((volatile gint8 *)ptr);
2641 ves_icall_System_Threading_Volatile_Read2 (void *ptr)
2643 return InterlockedRead16 ((volatile gint16 *)ptr);
2647 ves_icall_System_Threading_Volatile_Read4 (void *ptr)
2649 return InterlockedRead ((volatile gint32 *)ptr);
2653 ves_icall_System_Threading_Volatile_Read8 (void *ptr)
2655 #if SIZEOF_VOID_P == 4
2656 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2658 mono_interlocked_lock ();
2659 val = *(gint64*)ptr;
2660 mono_interlocked_unlock ();
2664 return InterlockedRead64 ((volatile gint64 *)ptr);
2668 ves_icall_System_Threading_Volatile_ReadIntPtr (void *ptr)
2670 return InterlockedReadPointer ((volatile gpointer *)ptr);
2674 ves_icall_System_Threading_Volatile_ReadDouble (void *ptr)
2678 #if SIZEOF_VOID_P == 4
2679 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2681 mono_interlocked_lock ();
2682 val = *(double*)ptr;
2683 mono_interlocked_unlock ();
2688 u.ival = InterlockedRead64 ((volatile gint64 *)ptr);
2694 ves_icall_System_Threading_Volatile_ReadFloat (void *ptr)
2698 u.ival = InterlockedRead ((volatile gint32 *)ptr);
2704 ves_icall_System_Threading_Volatile_Read_T (void *ptr)
2706 return (MonoObject *)InterlockedReadPointer ((volatile gpointer *)ptr);
2710 ves_icall_System_Threading_Thread_VolatileWrite1 (void *ptr, gint8 value)
2712 mono_memory_barrier ();
2713 *(volatile gint8 *)ptr = value;
2717 ves_icall_System_Threading_Thread_VolatileWrite2 (void *ptr, gint16 value)
2719 mono_memory_barrier ();
2720 *(volatile gint16 *)ptr = value;
2724 ves_icall_System_Threading_Thread_VolatileWrite4 (void *ptr, gint32 value)
2726 mono_memory_barrier ();
2727 *(volatile gint32 *)ptr = value;
2731 ves_icall_System_Threading_Thread_VolatileWrite8 (void *ptr, gint64 value)
2733 mono_memory_barrier ();
2734 *(volatile gint64 *)ptr = value;
2738 ves_icall_System_Threading_Thread_VolatileWriteIntPtr (void *ptr, void *value)
2740 mono_memory_barrier ();
2741 *(volatile void **)ptr = value;
2745 ves_icall_System_Threading_Thread_VolatileWriteObject (void *ptr, MonoObject *value)
2747 mono_memory_barrier ();
2748 mono_gc_wbarrier_generic_store (ptr, value);
2752 ves_icall_System_Threading_Thread_VolatileWriteDouble (void *ptr, double value)
2754 mono_memory_barrier ();
2755 *(volatile double *)ptr = value;
2759 ves_icall_System_Threading_Thread_VolatileWriteFloat (void *ptr, float value)
2761 mono_memory_barrier ();
2762 *(volatile float *)ptr = value;
2766 ves_icall_System_Threading_Volatile_Write1 (void *ptr, gint8 value)
2768 InterlockedWrite8 ((volatile gint8 *)ptr, value);
2772 ves_icall_System_Threading_Volatile_Write2 (void *ptr, gint16 value)
2774 InterlockedWrite16 ((volatile gint16 *)ptr, value);
2778 ves_icall_System_Threading_Volatile_Write4 (void *ptr, gint32 value)
2780 InterlockedWrite ((volatile gint32 *)ptr, value);
2784 ves_icall_System_Threading_Volatile_Write8 (void *ptr, gint64 value)
2786 #if SIZEOF_VOID_P == 4
2787 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2788 mono_interlocked_lock ();
2789 *(gint64*)ptr = value;
2790 mono_interlocked_unlock ();
2795 InterlockedWrite64 ((volatile gint64 *)ptr, value);
2799 ves_icall_System_Threading_Volatile_WriteIntPtr (void *ptr, void *value)
2801 InterlockedWritePointer ((volatile gpointer *)ptr, value);
2805 ves_icall_System_Threading_Volatile_WriteDouble (void *ptr, double value)
2809 #if SIZEOF_VOID_P == 4
2810 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2811 mono_interlocked_lock ();
2812 *(double*)ptr = value;
2813 mono_interlocked_unlock ();
2820 InterlockedWrite64 ((volatile gint64 *)ptr, u.ival);
2824 ves_icall_System_Threading_Volatile_WriteFloat (void *ptr, float value)
2830 InterlockedWrite ((volatile gint32 *)ptr, u.ival);
2834 ves_icall_System_Threading_Volatile_Write_T (void *ptr, MonoObject *value)
2836 mono_gc_wbarrier_generic_store_atomic (ptr, value);
2840 free_context (void *user_data)
2842 ContextStaticData *data = user_data;
2844 mono_threads_lock ();
2847 * There is no guarantee that, by the point this reference queue callback
2848 * has been invoked, the GC handle associated with the object will fail to
2849 * resolve as one might expect. So if we don't free and remove the GC
2850 * handle here, free_context_static_data_helper () could end up resolving
2851 * a GC handle to an actually-dead context which would contain a pointer
2852 * to an already-freed static data segment, resulting in a crash when
2855 g_hash_table_remove (contexts, GUINT_TO_POINTER (data->gc_handle));
2857 mono_threads_unlock ();
2859 mono_gchandle_free (data->gc_handle);
2860 mono_free_static_data (data->static_data);
2865 ves_icall_System_Runtime_Remoting_Contexts_Context_RegisterContext (MonoAppContext *ctx)
2867 mono_threads_lock ();
2869 //g_print ("Registering context %d in domain %d\n", ctx->context_id, ctx->domain_id);
2872 contexts = g_hash_table_new (NULL, NULL);
2875 context_queue = mono_gc_reference_queue_new (free_context);
2877 gpointer gch = GUINT_TO_POINTER (mono_gchandle_new_weakref (&ctx->obj, FALSE));
2878 g_hash_table_insert (contexts, gch, gch);
2881 * We use this intermediate structure to contain a duplicate pointer to
2882 * the static data because we can't rely on being able to resolve the GC
2883 * handle in the reference queue callback.
2885 ContextStaticData *data = g_new0 (ContextStaticData, 1);
2886 data->gc_handle = GPOINTER_TO_UINT (gch);
2889 context_adjust_static_data (ctx);
2890 mono_gc_reference_queue_add (context_queue, &ctx->obj, data);
2892 mono_threads_unlock ();
2894 mono_profiler_context_loaded (ctx);
2898 ves_icall_System_Runtime_Remoting_Contexts_Context_ReleaseContext (MonoAppContext *ctx)
2901 * NOTE: Since finalizers are unreliable for the purposes of ensuring
2902 * cleanup in exceptional circumstances, we don't actually do any
2903 * cleanup work here. We instead do this via a reference queue.
2906 //g_print ("Releasing context %d in domain %d\n", ctx->context_id, ctx->domain_id);
2908 mono_profiler_context_unloaded (ctx);
2912 mono_thread_init_tls (void)
2914 MONO_FAST_TLS_INIT (tls_current_object);
2915 mono_native_tls_alloc (¤t_object_key, NULL);
2918 void mono_thread_init (MonoThreadStartCB start_cb,
2919 MonoThreadAttachCB attach_cb)
2921 mono_coop_mutex_init_recursive (&threads_mutex);
2923 mono_os_mutex_init_recursive(&interlocked_mutex);
2924 mono_os_mutex_init_recursive(&joinable_threads_mutex);
2926 background_change_event = CreateEvent (NULL, TRUE, FALSE, NULL);
2927 g_assert(background_change_event != NULL);
2929 mono_init_static_data_info (&thread_static_info);
2930 mono_init_static_data_info (&context_static_info);
2932 THREAD_DEBUG (g_message ("%s: Allocated current_object_key %d", __func__, current_object_key));
2934 mono_thread_start_cb = start_cb;
2935 mono_thread_attach_cb = attach_cb;
2937 /* Get a pseudo handle to the current process. This is just a
2938 * kludge so that wapi can build a process handle if needed.
2939 * As a pseudo handle is returned, we don't need to clean
2942 GetCurrentProcess ();
2945 void mono_thread_cleanup (void)
2947 #if !defined(HOST_WIN32) && !defined(RUN_IN_SUBTHREAD)
2948 MonoThreadInfo *info;
2950 /* The main thread must abandon any held mutexes (particularly
2951 * important for named mutexes as they are shared across
2952 * processes, see bug 74680.) This will happen when the
2953 * thread exits, but if it's not running in a subthread it
2954 * won't exit in time.
2956 info = mono_thread_info_current ();
2957 wapi_thread_handle_set_exited (info->handle, mono_environment_exitcode_get ());
2961 /* This stuff needs more testing, it seems one of these
2962 * critical sections can be locked when mono_thread_cleanup is
2965 mono_coop_mutex_destroy (&threads_mutex);
2966 mono_os_mutex_destroy (&interlocked_mutex);
2967 mono_os_mutex_destroy (&delayed_free_table_mutex);
2968 mono_os_mutex_destroy (&small_id_mutex);
2969 CloseHandle (background_change_event);
2972 mono_native_tls_free (current_object_key);
2976 mono_threads_install_cleanup (MonoThreadCleanupFunc func)
2978 mono_thread_cleanup_fn = func;
2982 mono_thread_set_manage_callback (MonoThread *thread, MonoThreadManageCallback func)
2984 thread->internal_thread->manage_callback = func;
2988 static void print_tids (gpointer key, gpointer value, gpointer user)
2990 /* GPOINTER_TO_UINT breaks horribly if sizeof(void *) >
2991 * sizeof(uint) and a cast to uint would overflow
2993 /* Older versions of glib don't have G_GSIZE_FORMAT, so just
2994 * print this as a pointer.
2996 g_message ("Waiting for: %p", key);
3001 HANDLE handles[MAXIMUM_WAIT_OBJECTS];
3002 MonoInternalThread *threads[MAXIMUM_WAIT_OBJECTS];
3006 static void wait_for_tids (struct wait_data *wait, guint32 timeout)
3010 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
3013 ret=WaitForMultipleObjectsEx(wait->num, wait->handles, TRUE, timeout, TRUE);
3016 if(ret==WAIT_FAILED) {
3017 /* See the comment in build_wait_tids() */
3018 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
3022 for(i=0; i<wait->num; i++)
3023 CloseHandle (wait->handles[i]);
3025 if (ret == WAIT_TIMEOUT)
3028 for(i=0; i<wait->num; i++) {
3029 gsize tid = wait->threads[i]->tid;
3032 * On !win32, when the thread handle becomes signalled, it just means the thread has exited user code,
3033 * it can still run io-layer etc. code. So wait for it to really exit.
3034 * FIXME: This won't join threads which are not in the joinable_hash yet.
3036 mono_thread_join ((gpointer)tid);
3038 mono_threads_lock ();
3039 if(mono_g_hash_table_lookup (threads, (gpointer)tid)!=NULL) {
3040 /* This thread must have been killed, because
3041 * it hasn't cleaned itself up. (It's just
3042 * possible that the thread exited before the
3043 * parent thread had a chance to store the
3044 * handle, and now there is another pointer to
3045 * the already-exited thread stored. In this
3046 * case, we'll just get two
3047 * mono_profiler_thread_end() calls for the
3051 mono_threads_unlock ();
3052 THREAD_DEBUG (g_message ("%s: cleaning up after thread %p (%"G_GSIZE_FORMAT")", __func__, wait->threads[i], tid));
3053 thread_cleanup (wait->threads[i]);
3055 mono_threads_unlock ();
3060 static void wait_for_tids_or_state_change (struct wait_data *wait, guint32 timeout)
3062 guint32 i, ret, count;
3064 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
3066 /* Add the thread state change event, so it wakes up if a thread changes
3067 * to background mode.
3070 if (count < MAXIMUM_WAIT_OBJECTS) {
3071 wait->handles [count] = background_change_event;
3076 ret=WaitForMultipleObjectsEx (count, wait->handles, FALSE, timeout, TRUE);
3079 if(ret==WAIT_FAILED) {
3080 /* See the comment in build_wait_tids() */
3081 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
3085 for(i=0; i<wait->num; i++)
3086 CloseHandle (wait->handles[i]);
3088 if (ret == WAIT_TIMEOUT)
3091 if (ret < wait->num) {
3092 gsize tid = wait->threads[ret]->tid;
3093 mono_threads_lock ();
3094 if (mono_g_hash_table_lookup (threads, (gpointer)tid)!=NULL) {
3095 /* See comment in wait_for_tids about thread cleanup */
3096 mono_threads_unlock ();
3097 THREAD_DEBUG (g_message ("%s: cleaning up after thread %"G_GSIZE_FORMAT, __func__, tid));
3098 thread_cleanup (wait->threads [ret]);
3100 mono_threads_unlock ();
3104 static void build_wait_tids (gpointer key, gpointer value, gpointer user)
3106 struct wait_data *wait=(struct wait_data *)user;
3108 if(wait->num<MAXIMUM_WAIT_OBJECTS) {
3110 MonoInternalThread *thread=(MonoInternalThread *)value;
3112 /* Ignore background threads, we abort them later */
3113 /* Do not lock here since it is not needed and the caller holds threads_lock */
3114 if (thread->state & ThreadState_Background) {
3115 THREAD_DEBUG (g_message ("%s: ignoring background thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3116 return; /* just leave, ignore */
3119 if (mono_gc_is_finalizer_internal_thread (thread)) {
3120 THREAD_DEBUG (g_message ("%s: ignoring finalizer thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3124 if (thread == mono_thread_internal_current ()) {
3125 THREAD_DEBUG (g_message ("%s: ignoring current thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3129 if (mono_thread_get_main () && (thread == mono_thread_get_main ()->internal_thread)) {
3130 THREAD_DEBUG (g_message ("%s: ignoring main thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3134 if (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE) {
3135 THREAD_DEBUG (g_message ("%s: ignoring thread %" G_GSIZE_FORMAT "with DONT_MANAGE flag set.", __func__, (gsize)thread->tid));
3139 handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3140 if (handle == NULL) {
3141 THREAD_DEBUG (g_message ("%s: ignoring unopenable thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3145 THREAD_DEBUG (g_message ("%s: Invoking mono_thread_manage callback on thread %p", __func__, thread));
3146 if ((thread->manage_callback == NULL) || (thread->manage_callback (thread->root_domain_thread) == TRUE)) {
3147 wait->handles[wait->num]=handle;
3148 wait->threads[wait->num]=thread;
3151 THREAD_DEBUG (g_message ("%s: adding thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3153 THREAD_DEBUG (g_message ("%s: ignoring (because of callback) thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3158 /* Just ignore the rest, we can't do anything with
3165 remove_and_abort_threads (gpointer key, gpointer value, gpointer user)
3167 struct wait_data *wait=(struct wait_data *)user;
3168 MonoNativeThreadId self = mono_native_thread_id_get ();
3169 MonoInternalThread *thread = (MonoInternalThread *)value;
3172 if (wait->num >= MAXIMUM_WAIT_OBJECTS)
3175 /* The finalizer thread is not a background thread */
3176 if (!mono_native_thread_id_equals (thread_get_tid (thread), self)
3177 && (thread->state & ThreadState_Background) != 0
3178 && (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE) == 0
3180 handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3184 wait->handles[wait->num] = handle;
3185 wait->threads[wait->num] = thread;
3188 THREAD_DEBUG (g_print ("%s: Aborting id: %"G_GSIZE_FORMAT"\n", __func__, (gsize)thread->tid));
3189 mono_thread_internal_stop (thread);
3193 return !mono_native_thread_id_equals (thread_get_tid (thread), self)
3194 && !mono_gc_is_finalizer_internal_thread (thread);
3198 * mono_threads_set_shutting_down:
3200 * Is called by a thread that wants to shut down Mono. If the runtime is already
3201 * shutting down, the calling thread is suspended/stopped, and this function never
3205 mono_threads_set_shutting_down (void)
3207 MonoInternalThread *current_thread = mono_thread_internal_current ();
3209 mono_threads_lock ();
3211 if (shutting_down) {
3212 mono_threads_unlock ();
3214 /* Make sure we're properly suspended/stopped */
3216 LOCK_THREAD (current_thread);
3218 if ((current_thread->state & ThreadState_SuspendRequested) ||
3219 (current_thread->state & ThreadState_AbortRequested) ||
3220 (current_thread->state & ThreadState_StopRequested)) {
3221 UNLOCK_THREAD (current_thread);
3222 mono_thread_execute_interruption ();
3224 current_thread->state |= ThreadState_Stopped;
3225 UNLOCK_THREAD (current_thread);
3228 /*since we're killing the thread, unset the current domain.*/
3229 mono_domain_unset ();
3231 /* Wake up other threads potentially waiting for us */
3232 mono_thread_info_exit ();
3234 shutting_down = TRUE;
3236 /* Not really a background state change, but this will
3237 * interrupt the main thread if it is waiting for all
3238 * the other threads.
3240 SetEvent (background_change_event);
3242 mono_threads_unlock ();
3246 void mono_thread_manage (void)
3248 struct wait_data wait_data;
3249 struct wait_data *wait = &wait_data;
3251 memset (wait, 0, sizeof (struct wait_data));
3252 /* join each thread that's still running */
3253 THREAD_DEBUG (g_message ("%s: Joining each running thread...", __func__));
3255 mono_threads_lock ();
3257 THREAD_DEBUG (g_message("%s: No threads", __func__));
3258 mono_threads_unlock ();
3261 mono_threads_unlock ();
3264 mono_threads_lock ();
3265 if (shutting_down) {
3266 /* somebody else is shutting down */
3267 mono_threads_unlock ();
3270 THREAD_DEBUG (g_message ("%s: There are %d threads to join", __func__, mono_g_hash_table_size (threads));
3271 mono_g_hash_table_foreach (threads, print_tids, NULL));
3273 ResetEvent (background_change_event);
3275 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3276 memset (wait->threads, 0, MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3277 mono_g_hash_table_foreach (threads, build_wait_tids, wait);
3278 mono_threads_unlock ();
3280 /* Something to wait for */
3281 wait_for_tids_or_state_change (wait, INFINITE);
3283 THREAD_DEBUG (g_message ("%s: I have %d threads after waiting.", __func__, wait->num));
3284 } while(wait->num>0);
3286 /* Mono is shutting down, so just wait for the end */
3287 if (!mono_runtime_try_shutdown ()) {
3288 /*FIXME mono_thread_suspend probably should call mono_thread_execute_interruption when self interrupting. */
3289 mono_thread_suspend (mono_thread_internal_current ());
3290 mono_thread_execute_interruption ();
3294 * Remove everything but the finalizer thread and self.
3295 * Also abort all the background threads
3298 mono_threads_lock ();
3301 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3302 memset (wait->threads, 0, MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3303 mono_g_hash_table_foreach_remove (threads, remove_and_abort_threads, wait);
3305 mono_threads_unlock ();
3307 THREAD_DEBUG (g_message ("%s: wait->num is now %d", __func__, wait->num));
3309 /* Something to wait for */
3310 wait_for_tids (wait, INFINITE);
3312 } while (wait->num > 0);
3315 * give the subthreads a chance to really quit (this is mainly needed
3316 * to get correct user and system times from getrusage/wait/time(1)).
3317 * This could be removed if we avoid pthread_detach() and use pthread_join().
3319 mono_thread_info_yield ();
3323 collect_threads_for_suspend (gpointer key, gpointer value, gpointer user_data)
3325 MonoInternalThread *thread = (MonoInternalThread*)value;
3326 struct wait_data *wait = (struct wait_data*)user_data;
3330 * We try to exclude threads early, to avoid running into the MAXIMUM_WAIT_OBJECTS
3332 * This needs no locking.
3334 if ((thread->state & ThreadState_Suspended) != 0 ||
3335 (thread->state & ThreadState_Stopped) != 0)
3338 if (wait->num<MAXIMUM_WAIT_OBJECTS) {
3339 handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3343 wait->handles [wait->num] = handle;
3344 wait->threads [wait->num] = thread;
3350 * mono_thread_suspend_all_other_threads:
3352 * Suspend all managed threads except the finalizer thread and this thread. It is
3353 * not possible to resume them later.
3355 void mono_thread_suspend_all_other_threads (void)
3357 struct wait_data wait_data;
3358 struct wait_data *wait = &wait_data;
3360 MonoNativeThreadId self = mono_native_thread_id_get ();
3361 guint32 eventidx = 0;
3362 gboolean starting, finished;
3364 memset (wait, 0, sizeof (struct wait_data));
3366 * The other threads could be in an arbitrary state at this point, i.e.
3367 * they could be starting up, shutting down etc. This means that there could be
3368 * threads which are not even in the threads hash table yet.
3372 * First we set a barrier which will be checked by all threads before they
3373 * are added to the threads hash table, and they will exit if the flag is set.
3374 * This ensures that no threads could be added to the hash later.
3375 * We will use shutting_down as the barrier for now.
3377 g_assert (shutting_down);
3380 * We make multiple calls to WaitForMultipleObjects since:
3381 * - we can only wait for MAXIMUM_WAIT_OBJECTS threads
3382 * - some threads could exit without becoming suspended
3387 * Make a copy of the hashtable since we can't do anything with
3388 * threads while threads_mutex is held.
3391 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3392 memset (wait->threads, 0, MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3393 mono_threads_lock ();
3394 mono_g_hash_table_foreach (threads, collect_threads_for_suspend, wait);
3395 mono_threads_unlock ();
3398 /* Get the suspended events that we'll be waiting for */
3399 for (i = 0; i < wait->num; ++i) {
3400 MonoInternalThread *thread = wait->threads [i];
3402 if (mono_native_thread_id_equals (thread_get_tid (thread), self)
3403 || mono_gc_is_finalizer_internal_thread (thread)
3404 || (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE)
3406 //CloseHandle (wait->handles [i]);
3407 wait->threads [i] = NULL; /* ignore this thread in next loop */
3411 LOCK_THREAD (thread);
3413 if ((thread->state & ThreadState_Suspended) != 0 ||
3414 (thread->state & ThreadState_StopRequested) != 0 ||
3415 (thread->state & ThreadState_Stopped) != 0) {
3416 UNLOCK_THREAD (thread);
3417 CloseHandle (wait->handles [i]);
3418 wait->threads [i] = NULL; /* ignore this thread in next loop */
3424 /* Convert abort requests into suspend requests */
3425 if ((thread->state & ThreadState_AbortRequested) != 0)
3426 thread->state &= ~ThreadState_AbortRequested;
3428 thread->state |= ThreadState_SuspendRequested;
3430 /* Signal the thread to suspend + calls UNLOCK_THREAD (thread) */
3431 async_suspend_internal (thread, TRUE);
3433 if (eventidx <= 0) {
3435 * If there are threads which are starting up, we wait until they
3436 * are suspended when they try to register in the threads hash.
3437 * This is guaranteed to finish, since the threads which can create new
3438 * threads get suspended after a while.
3439 * FIXME: The finalizer thread can still create new threads.
3441 mono_threads_lock ();
3442 if (threads_starting_up)
3443 starting = mono_g_hash_table_size (threads_starting_up) > 0;
3446 mono_threads_unlock ();
3448 mono_thread_info_sleep (100, NULL);
3456 MonoInternalThread *thread;
3457 MonoStackFrameInfo *frames;
3458 int nframes, max_frames;
3459 int nthreads, max_threads;
3460 MonoInternalThread **threads;
3461 } ThreadDumpUserData;
3463 static gboolean thread_dump_requested;
3465 /* This needs to be async safe */
3467 collect_frame (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
3469 ThreadDumpUserData *ud = (ThreadDumpUserData *)data;
3471 if (ud->nframes < ud->max_frames) {
3472 memcpy (&ud->frames [ud->nframes], frame, sizeof (MonoStackFrameInfo));
3479 /* This needs to be async safe */
3480 static SuspendThreadResult
3481 get_thread_dump (MonoThreadInfo *info, gpointer ud)
3483 ThreadDumpUserData *user_data = (ThreadDumpUserData *)ud;
3484 MonoInternalThread *thread = user_data->thread;
3487 /* This no longer works with remote unwinding */
3489 wapi_desc = wapi_current_thread_desc ();
3490 g_string_append_printf (text, " tid=0x%p this=0x%p %s\n", (gpointer)(gsize)thread->tid, thread, wapi_desc);
3495 if (thread == mono_thread_internal_current ())
3496 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (collect_frame, NULL, MONO_UNWIND_SIGNAL_SAFE, ud);
3498 mono_get_eh_callbacks ()->mono_walk_stack_with_state (collect_frame, mono_thread_info_get_suspend_state (info), MONO_UNWIND_SIGNAL_SAFE, ud);
3500 return MonoResumeThread;
3504 int nthreads, max_threads;
3505 MonoInternalThread **threads;
3506 } CollectThreadsUserData;
3509 collect_thread (gpointer key, gpointer value, gpointer user)
3511 CollectThreadsUserData *ud = (CollectThreadsUserData *)user;
3512 MonoInternalThread *thread = (MonoInternalThread *)value;
3514 if (ud->nthreads < ud->max_threads)
3515 ud->threads [ud->nthreads ++] = thread;
3519 * Collect running threads into the THREADS array.
3520 * THREADS should be an array allocated on the stack.
3523 collect_threads (MonoInternalThread **thread_array, int max_threads)
3525 CollectThreadsUserData ud;
3527 memset (&ud, 0, sizeof (ud));
3528 /* This array contains refs, but its on the stack, so its ok */
3529 ud.threads = thread_array;
3530 ud.max_threads = max_threads;
3532 mono_threads_lock ();
3533 mono_g_hash_table_foreach (threads, collect_thread, &ud);
3534 mono_threads_unlock ();
3540 dump_thread (MonoInternalThread *thread, ThreadDumpUserData *ud)
3542 GString* text = g_string_new (0);
3544 GError *error = NULL;
3547 ud->thread = thread;
3550 /* Collect frames for the thread */
3551 if (thread == mono_thread_internal_current ()) {
3552 get_thread_dump (mono_thread_info_current (), ud);
3554 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), FALSE, get_thread_dump, ud);
3558 * Do all the non async-safe work outside of get_thread_dump.
3561 name = g_utf16_to_utf8 (thread->name, thread->name_len, NULL, NULL, &error);
3563 g_string_append_printf (text, "\n\"%s\"", name);
3566 else if (thread->threadpool_thread) {
3567 g_string_append (text, "\n\"<threadpool thread>\"");
3569 g_string_append (text, "\n\"<unnamed thread>\"");
3572 for (i = 0; i < ud->nframes; ++i) {
3573 MonoStackFrameInfo *frame = &ud->frames [i];
3574 MonoMethod *method = NULL;
3576 if (frame->type == FRAME_TYPE_MANAGED)
3577 method = mono_jit_info_get_method (frame->ji);
3580 gchar *location = mono_debug_print_stack_frame (method, frame->native_offset, frame->domain);
3581 g_string_append_printf (text, " %s\n", location);
3584 g_string_append_printf (text, " at <unknown> <0x%05x>\n", frame->native_offset);
3588 fprintf (stdout, "%s", text->str);
3590 #if PLATFORM_WIN32 && TARGET_WIN32 && _DEBUG
3591 OutputDebugStringA(text->str);
3594 g_string_free (text, TRUE);
3599 mono_threads_perform_thread_dump (void)
3601 ThreadDumpUserData ud;
3602 MonoInternalThread *thread_array [128];
3603 int tindex, nthreads;
3605 if (!thread_dump_requested)
3608 printf ("Full thread dump:\n");
3610 /* Make a copy of the threads hash to avoid doing work inside threads_lock () */
3611 nthreads = collect_threads (thread_array, 128);
3613 memset (&ud, 0, sizeof (ud));
3614 ud.frames = g_new0 (MonoStackFrameInfo, 256);
3615 ud.max_frames = 256;
3617 for (tindex = 0; tindex < nthreads; ++tindex)
3618 dump_thread (thread_array [tindex], &ud);
3622 thread_dump_requested = FALSE;
3625 /* Obtain the thread dump of all threads */
3627 mono_threads_get_thread_dump (MonoArray **out_threads, MonoArray **out_stack_frames)
3631 ThreadDumpUserData ud;
3632 MonoInternalThread *thread_array [128];
3633 MonoDomain *domain = mono_domain_get ();
3634 MonoDebugSourceLocation *location;
3635 int tindex, nthreads;
3637 mono_error_init (&error);
3639 *out_threads = NULL;
3640 *out_stack_frames = NULL;
3642 /* Make a copy of the threads hash to avoid doing work inside threads_lock () */
3643 nthreads = collect_threads (thread_array, 128);
3645 memset (&ud, 0, sizeof (ud));
3646 ud.frames = g_new0 (MonoStackFrameInfo, 256);
3647 ud.max_frames = 256;
3649 *out_threads = mono_array_new_checked (domain, mono_defaults.thread_class, nthreads, &error);
3650 if (!is_ok (&error))
3652 *out_stack_frames = mono_array_new_checked (domain, mono_defaults.array_class, nthreads, &error);
3653 if (!is_ok (&error))
3656 for (tindex = 0; tindex < nthreads; ++tindex) {
3657 MonoInternalThread *thread = thread_array [tindex];
3658 MonoArray *thread_frames;
3664 /* Collect frames for the thread */
3665 if (thread == mono_thread_internal_current ()) {
3666 get_thread_dump (mono_thread_info_current (), &ud);
3668 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), FALSE, get_thread_dump, &ud);
3671 mono_array_setref_fast (*out_threads, tindex, mono_thread_current_for_thread (thread));
3673 thread_frames = mono_array_new_checked (domain, mono_defaults.stack_frame_class, ud.nframes, &error);
3674 if (!is_ok (&error))
3676 mono_array_setref_fast (*out_stack_frames, tindex, thread_frames);
3678 for (i = 0; i < ud.nframes; ++i) {
3679 MonoStackFrameInfo *frame = &ud.frames [i];
3680 MonoMethod *method = NULL;
3681 MonoStackFrame *sf = (MonoStackFrame *)mono_object_new_checked (domain, mono_defaults.stack_frame_class, &error);
3682 if (!mono_error_ok (&error))
3685 sf->native_offset = frame->native_offset;
3687 if (frame->type == FRAME_TYPE_MANAGED)
3688 method = mono_jit_info_get_method (frame->ji);
3691 sf->method_address = (gsize) frame->ji->code_start;
3693 MonoReflectionMethod *rm = mono_method_get_object_checked (domain, method, NULL, &error);
3694 mono_error_raise_exception (&error); /* FIXME don't raise here */
3695 MONO_OBJECT_SETREF (sf, method, rm);
3697 location = mono_debug_lookup_source_location (method, frame->native_offset, domain);
3699 sf->il_offset = location->il_offset;
3701 if (location && location->source_file) {
3702 MONO_OBJECT_SETREF (sf, filename, mono_string_new (domain, location->source_file));
3703 sf->line = location->row;
3704 sf->column = location->column;
3706 mono_debug_free_source_location (location);
3711 mono_array_setref (thread_frames, i, sf);
3717 mono_error_raise_exception (&error); /* FIXME don't raise here */
3721 * mono_threads_request_thread_dump:
3723 * Ask all threads except the current to print their stacktrace to stdout.
3726 mono_threads_request_thread_dump (void)
3728 /*The new thread dump code runs out of the finalizer thread. */
3729 thread_dump_requested = TRUE;
3730 mono_gc_finalize_notify ();
3735 gint allocated; /* +1 so that refs [allocated] == NULL */
3739 typedef struct ref_stack RefStack;
3742 ref_stack_new (gint initial_size)
3746 initial_size = MAX (initial_size, 16) + 1;
3747 rs = g_new0 (RefStack, 1);
3748 rs->refs = g_new0 (gpointer, initial_size);
3749 rs->allocated = initial_size;
3754 ref_stack_destroy (gpointer ptr)
3756 RefStack *rs = (RefStack *)ptr;
3765 ref_stack_push (RefStack *rs, gpointer ptr)
3767 g_assert (rs != NULL);
3769 if (rs->bottom >= rs->allocated) {
3770 rs->refs = (void **)g_realloc (rs->refs, rs->allocated * 2 * sizeof (gpointer) + 1);
3771 rs->allocated <<= 1;
3772 rs->refs [rs->allocated] = NULL;
3774 rs->refs [rs->bottom++] = ptr;
3778 ref_stack_pop (RefStack *rs)
3780 if (rs == NULL || rs->bottom == 0)
3784 rs->refs [rs->bottom] = NULL;
3788 ref_stack_find (RefStack *rs, gpointer ptr)
3795 for (refs = rs->refs; refs && *refs; refs++) {
3803 * mono_thread_push_appdomain_ref:
3805 * Register that the current thread may have references to objects in domain
3806 * @domain on its stack. Each call to this function should be paired with a
3807 * call to pop_appdomain_ref.
3810 mono_thread_push_appdomain_ref (MonoDomain *domain)
3812 MonoInternalThread *thread = mono_thread_internal_current ();
3815 /* printf ("PUSH REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, domain->friendly_name); */
3816 SPIN_LOCK (thread->lock_thread_id);
3817 if (thread->appdomain_refs == NULL)
3818 thread->appdomain_refs = ref_stack_new (16);
3819 ref_stack_push ((RefStack *)thread->appdomain_refs, domain);
3820 SPIN_UNLOCK (thread->lock_thread_id);
3825 mono_thread_pop_appdomain_ref (void)
3827 MonoInternalThread *thread = mono_thread_internal_current ();
3830 /* printf ("POP REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, ((MonoDomain*)(thread->appdomain_refs->data))->friendly_name); */
3831 SPIN_LOCK (thread->lock_thread_id);
3832 ref_stack_pop ((RefStack *)thread->appdomain_refs);
3833 SPIN_UNLOCK (thread->lock_thread_id);
3838 mono_thread_internal_has_appdomain_ref (MonoInternalThread *thread, MonoDomain *domain)
3841 SPIN_LOCK (thread->lock_thread_id);
3842 res = ref_stack_find ((RefStack *)thread->appdomain_refs, domain);
3843 SPIN_UNLOCK (thread->lock_thread_id);
3848 mono_thread_has_appdomain_ref (MonoThread *thread, MonoDomain *domain)
3850 return mono_thread_internal_has_appdomain_ref (thread->internal_thread, domain);
3853 typedef struct abort_appdomain_data {
3854 struct wait_data wait;
3856 } abort_appdomain_data;
3859 collect_appdomain_thread (gpointer key, gpointer value, gpointer user_data)
3861 MonoInternalThread *thread = (MonoInternalThread*)value;
3862 abort_appdomain_data *data = (abort_appdomain_data*)user_data;
3863 MonoDomain *domain = data->domain;
3865 if (mono_thread_internal_has_appdomain_ref (thread, domain)) {
3866 /* printf ("ABORTING THREAD %p BECAUSE IT REFERENCES DOMAIN %s.\n", thread->tid, domain->friendly_name); */
3868 if(data->wait.num<MAXIMUM_WAIT_OBJECTS) {
3869 HANDLE handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3872 data->wait.handles [data->wait.num] = handle;
3873 data->wait.threads [data->wait.num] = thread;
3876 /* Just ignore the rest, we can't do anything with
3884 * mono_threads_abort_appdomain_threads:
3886 * Abort threads which has references to the given appdomain.
3889 mono_threads_abort_appdomain_threads (MonoDomain *domain, int timeout)
3891 #ifdef __native_client__
3895 abort_appdomain_data user_data;
3897 int orig_timeout = timeout;
3900 THREAD_DEBUG (g_message ("%s: starting abort", __func__));
3902 start_time = mono_msec_ticks ();
3904 mono_threads_lock ();
3906 user_data.domain = domain;
3907 user_data.wait.num = 0;
3908 /* This shouldn't take any locks */
3909 mono_g_hash_table_foreach (threads, collect_appdomain_thread, &user_data);
3910 mono_threads_unlock ();
3912 if (user_data.wait.num > 0) {
3913 /* Abort the threads outside the threads lock */
3914 for (i = 0; i < user_data.wait.num; ++i)
3915 mono_thread_internal_abort (user_data.wait.threads [i]);
3918 * We should wait for the threads either to abort, or to leave the
3919 * domain. We can't do the latter, so we wait with a timeout.
3921 wait_for_tids (&user_data.wait, 100);
3924 /* Update remaining time */
3925 timeout -= mono_msec_ticks () - start_time;
3926 start_time = mono_msec_ticks ();
3928 if (orig_timeout != -1 && timeout < 0)
3931 while (user_data.wait.num > 0);
3933 THREAD_DEBUG (g_message ("%s: abort done", __func__));
3939 clear_cached_culture (gpointer key, gpointer value, gpointer user_data)
3941 MonoInternalThread *thread = (MonoInternalThread*)value;
3942 MonoDomain *domain = (MonoDomain*)user_data;
3945 /* No locking needed here */
3946 /* FIXME: why no locking? writes to the cache are protected with synch_cs above */
3948 if (thread->cached_culture_info) {
3949 for (i = 0; i < NUM_CACHED_CULTURES * 2; ++i) {
3950 MonoObject *obj = mono_array_get (thread->cached_culture_info, MonoObject*, i);
3951 if (obj && obj->vtable->domain == domain)
3952 mono_array_set (thread->cached_culture_info, MonoObject*, i, NULL);
3958 * mono_threads_clear_cached_culture:
3960 * Clear the cached_current_culture from all threads if it is in the
3964 mono_threads_clear_cached_culture (MonoDomain *domain)
3966 mono_threads_lock ();
3967 mono_g_hash_table_foreach (threads, clear_cached_culture, domain);
3968 mono_threads_unlock ();
3972 * mono_thread_get_undeniable_exception:
3974 * Return an exception which needs to be raised when leaving a catch clause.
3975 * This is used for undeniable exception propagation.
3978 mono_thread_get_undeniable_exception (void)
3980 MonoInternalThread *thread = mono_thread_internal_current ();
3982 if (thread && thread->abort_exc && !is_running_protected_wrapper ()) {
3984 * FIXME: Clear the abort exception and return an AppDomainUnloaded
3985 * exception if the thread no longer references a dying appdomain.
3987 thread->abort_exc->trace_ips = NULL;
3988 thread->abort_exc->stack_trace = NULL;
3989 return thread->abort_exc;
3995 #if MONO_SMALL_CONFIG
3996 #define NUM_STATIC_DATA_IDX 4
3997 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
4001 #define NUM_STATIC_DATA_IDX 8
4002 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
4003 1024, 4096, 16384, 65536, 262144, 1048576, 4194304, 16777216
4007 static MonoBitSet *thread_reference_bitmaps [NUM_STATIC_DATA_IDX];
4008 static MonoBitSet *context_reference_bitmaps [NUM_STATIC_DATA_IDX];
4011 mark_slots (void *addr, MonoBitSet **bitmaps, MonoGCMarkFunc mark_func, void *gc_data)
4013 gpointer *static_data = (gpointer *)addr;
4015 for (int i = 0; i < NUM_STATIC_DATA_IDX; ++i) {
4016 void **ptr = (void **)static_data [i];
4021 MONO_BITSET_FOREACH (bitmaps [i], idx, {
4022 void **p = ptr + idx;
4025 mark_func ((MonoObject**)p, gc_data);
4031 mark_tls_slots (void *addr, MonoGCMarkFunc mark_func, void *gc_data)
4033 mark_slots (addr, thread_reference_bitmaps, mark_func, gc_data);
4037 mark_ctx_slots (void *addr, MonoGCMarkFunc mark_func, void *gc_data)
4039 mark_slots (addr, context_reference_bitmaps, mark_func, gc_data);
4043 * mono_alloc_static_data
4045 * Allocate memory blocks for storing threads or context static data
4048 mono_alloc_static_data (gpointer **static_data_ptr, guint32 offset, gboolean threadlocal)
4050 guint idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4053 gpointer* static_data = *static_data_ptr;
4055 static MonoGCDescriptor tls_desc = MONO_GC_DESCRIPTOR_NULL;
4056 static MonoGCDescriptor ctx_desc = MONO_GC_DESCRIPTOR_NULL;
4058 if (mono_gc_user_markers_supported ()) {
4059 if (tls_desc == MONO_GC_DESCRIPTOR_NULL)
4060 tls_desc = mono_gc_make_root_descr_user (mark_tls_slots);
4062 if (ctx_desc == MONO_GC_DESCRIPTOR_NULL)
4063 ctx_desc = mono_gc_make_root_descr_user (mark_ctx_slots);
4066 static_data = (void **)mono_gc_alloc_fixed (static_data_size [0], threadlocal ? tls_desc : ctx_desc,
4067 threadlocal ? MONO_ROOT_SOURCE_THREAD_STATIC : MONO_ROOT_SOURCE_CONTEXT_STATIC,
4068 threadlocal ? "managed thread-static variables" : "managed context-static variables");
4069 *static_data_ptr = static_data;
4070 static_data [0] = static_data;
4073 for (i = 1; i <= idx; ++i) {
4074 if (static_data [i])
4077 if (mono_gc_user_markers_supported ())
4078 static_data [i] = g_malloc0 (static_data_size [i]);
4080 static_data [i] = mono_gc_alloc_fixed (static_data_size [i], MONO_GC_DESCRIPTOR_NULL,
4081 threadlocal ? MONO_ROOT_SOURCE_THREAD_STATIC : MONO_ROOT_SOURCE_CONTEXT_STATIC,
4082 threadlocal ? "managed thread-static variables" : "managed context-static variables");
4087 mono_free_static_data (gpointer* static_data)
4090 for (i = 1; i < NUM_STATIC_DATA_IDX; ++i) {
4091 gpointer p = static_data [i];
4095 * At this point, the static data pointer array is still registered with the
4096 * GC, so must ensure that mark_tls_slots() will not encounter any invalid
4097 * data. Freeing the individual arrays without first nulling their slots
4098 * would make it possible for mark_tls/ctx_slots() to encounter a pointer to
4099 * such an already freed array. See bug #13813.
4101 static_data [i] = NULL;
4102 mono_memory_write_barrier ();
4103 if (mono_gc_user_markers_supported ())
4106 mono_gc_free_fixed (p);
4108 mono_gc_free_fixed (static_data);
4112 * mono_init_static_data_info
4114 * Initializes static data counters
4116 static void mono_init_static_data_info (StaticDataInfo *static_data)
4118 static_data->idx = 0;
4119 static_data->offset = 0;
4120 static_data->freelist = NULL;
4124 * mono_alloc_static_data_slot
4126 * Generates an offset for static data. static_data contains the counters
4127 * used to generate it.
4130 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align)
4132 if (!static_data->idx && !static_data->offset) {
4134 * we use the first chunk of the first allocation also as
4135 * an array for the rest of the data
4137 static_data->offset = sizeof (gpointer) * NUM_STATIC_DATA_IDX;
4139 static_data->offset += align - 1;
4140 static_data->offset &= ~(align - 1);
4141 if (static_data->offset + size >= static_data_size [static_data->idx]) {
4142 static_data->idx ++;
4143 g_assert (size <= static_data_size [static_data->idx]);
4144 g_assert (static_data->idx < NUM_STATIC_DATA_IDX);
4145 static_data->offset = 0;
4147 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (static_data->idx, static_data->offset, 0);
4148 static_data->offset += size;
4153 * ensure thread static fields already allocated are valid for thread
4154 * This function is called when a thread is created or on thread attach.
4157 thread_adjust_static_data (MonoInternalThread *thread)
4159 mono_threads_lock ();
4160 if (thread_static_info.offset || thread_static_info.idx > 0) {
4161 /* get the current allocated size */
4162 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (thread_static_info.idx, thread_static_info.offset, 0);
4163 mono_alloc_static_data (&thread->static_data, offset, TRUE);
4165 mono_threads_unlock ();
4169 * LOCKING: requires that threads_mutex is held
4172 context_adjust_static_data (MonoAppContext *ctx)
4174 if (context_static_info.offset || context_static_info.idx > 0) {
4175 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (context_static_info.idx, context_static_info.offset, 0);
4176 mono_alloc_static_data (&ctx->static_data, offset, FALSE);
4177 ctx->data->static_data = ctx->static_data;
4182 * LOCKING: requires that threads_mutex is held
4185 alloc_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
4187 MonoInternalThread *thread = (MonoInternalThread *)value;
4188 guint32 offset = GPOINTER_TO_UINT (user);
4190 mono_alloc_static_data (&(thread->static_data), offset, TRUE);
4194 * LOCKING: requires that threads_mutex is held
4197 alloc_context_static_data_helper (gpointer key, gpointer value, gpointer user)
4199 MonoAppContext *ctx = (MonoAppContext *) mono_gchandle_get_target (GPOINTER_TO_INT (key));
4204 guint32 offset = GPOINTER_TO_UINT (user);
4205 mono_alloc_static_data (&ctx->static_data, offset, FALSE);
4206 ctx->data->static_data = ctx->static_data;
4209 static StaticDataFreeList*
4210 search_slot_in_freelist (StaticDataInfo *static_data, guint32 size, guint32 align)
4212 StaticDataFreeList* prev = NULL;
4213 StaticDataFreeList* tmp = static_data->freelist;
4215 if (tmp->size == size) {
4217 prev->next = tmp->next;
4219 static_data->freelist = tmp->next;
4228 #if SIZEOF_VOID_P == 4
4235 update_reference_bitmap (MonoBitSet **sets, guint32 offset, uintptr_t *bitmap, int numbits)
4237 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4239 sets [idx] = mono_bitset_new (static_data_size [idx] / sizeof (uintptr_t), 0);
4240 MonoBitSet *rb = sets [idx];
4241 offset = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
4242 offset /= sizeof (uintptr_t);
4243 /* offset is now the bitmap offset */
4244 for (int i = 0; i < numbits; ++i) {
4245 if (bitmap [i / sizeof (uintptr_t)] & (ONE_P << (i & (sizeof (uintptr_t) * 8 -1))))
4246 mono_bitset_set_fast (rb, offset + i);
4251 clear_reference_bitmap (MonoBitSet **sets, guint32 offset, guint32 size)
4253 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4254 MonoBitSet *rb = sets [idx];
4255 offset = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
4256 offset /= sizeof (uintptr_t);
4257 /* offset is now the bitmap offset */
4258 for (int i = 0; i < size / sizeof (uintptr_t); i++)
4259 mono_bitset_clear_fast (rb, offset + i);
4263 mono_alloc_special_static_data (guint32 static_type, guint32 size, guint32 align, uintptr_t *bitmap, int numbits)
4265 g_assert (static_type == SPECIAL_STATIC_THREAD || static_type == SPECIAL_STATIC_CONTEXT);
4267 StaticDataInfo *info;
4270 if (static_type == SPECIAL_STATIC_THREAD) {
4271 info = &thread_static_info;
4272 sets = thread_reference_bitmaps;
4274 info = &context_static_info;
4275 sets = context_reference_bitmaps;
4278 mono_threads_lock ();
4280 StaticDataFreeList *item = search_slot_in_freelist (info, size, align);
4284 offset = item->offset;
4287 offset = mono_alloc_static_data_slot (info, size, align);
4290 update_reference_bitmap (sets, offset, bitmap, numbits);
4292 if (static_type == SPECIAL_STATIC_THREAD) {
4293 /* This can be called during startup */
4294 if (threads != NULL)
4295 mono_g_hash_table_foreach (threads, alloc_thread_static_data_helper, GUINT_TO_POINTER (offset));
4297 if (contexts != NULL)
4298 g_hash_table_foreach (contexts, alloc_context_static_data_helper, GUINT_TO_POINTER (offset));
4300 ACCESS_SPECIAL_STATIC_OFFSET (offset, type) = SPECIAL_STATIC_OFFSET_TYPE_CONTEXT;
4303 mono_threads_unlock ();
4309 mono_get_special_static_data_for_thread (MonoInternalThread *thread, guint32 offset)
4311 guint32 static_type = ACCESS_SPECIAL_STATIC_OFFSET (offset, type);
4313 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4314 return get_thread_static_data (thread, offset);
4316 return get_context_static_data (thread->current_appcontext, offset);
4321 mono_get_special_static_data (guint32 offset)
4323 return mono_get_special_static_data_for_thread (mono_thread_internal_current (), offset);
4332 * LOCKING: requires that threads_mutex is held
4335 free_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
4337 MonoInternalThread *thread = (MonoInternalThread *)value;
4338 OffsetSize *data = (OffsetSize *)user;
4339 int idx = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, index);
4340 int off = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, offset);
4343 if (!thread->static_data || !thread->static_data [idx])
4345 ptr = ((char*) thread->static_data [idx]) + off;
4346 mono_gc_bzero_atomic (ptr, data->size);
4350 * LOCKING: requires that threads_mutex is held
4353 free_context_static_data_helper (gpointer key, gpointer value, gpointer user)
4355 MonoAppContext *ctx = (MonoAppContext *) mono_gchandle_get_target (GPOINTER_TO_INT (key));
4360 OffsetSize *data = (OffsetSize *)user;
4361 int idx = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, index);
4362 int off = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, offset);
4365 if (!ctx->static_data || !ctx->static_data [idx])
4368 ptr = ((char*) ctx->static_data [idx]) + off;
4369 mono_gc_bzero_atomic (ptr, data->size);
4373 do_free_special_slot (guint32 offset, guint32 size)
4375 guint32 static_type = ACCESS_SPECIAL_STATIC_OFFSET (offset, type);
4377 StaticDataInfo *info;
4379 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4380 info = &thread_static_info;
4381 sets = thread_reference_bitmaps;
4383 info = &context_static_info;
4384 sets = context_reference_bitmaps;
4387 guint32 data_offset = offset;
4388 ACCESS_SPECIAL_STATIC_OFFSET (data_offset, type) = 0;
4389 OffsetSize data = { data_offset, size };
4391 clear_reference_bitmap (sets, data.offset, data.size);
4393 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4394 if (threads != NULL)
4395 mono_g_hash_table_foreach (threads, free_thread_static_data_helper, &data);
4397 if (contexts != NULL)
4398 g_hash_table_foreach (contexts, free_context_static_data_helper, &data);
4401 if (!mono_runtime_is_shutting_down ()) {
4402 StaticDataFreeList *item = g_new0 (StaticDataFreeList, 1);
4404 item->offset = offset;
4407 item->next = info->freelist;
4408 info->freelist = item;
4413 do_free_special (gpointer key, gpointer value, gpointer data)
4415 MonoClassField *field = (MonoClassField *)key;
4416 guint32 offset = GPOINTER_TO_UINT (value);
4419 size = mono_type_size (field->type, &align);
4420 do_free_special_slot (offset, size);
4424 mono_alloc_special_static_data_free (GHashTable *special_static_fields)
4426 mono_threads_lock ();
4428 g_hash_table_foreach (special_static_fields, do_free_special, NULL);
4430 mono_threads_unlock ();
4434 mono_special_static_data_free_slot (guint32 offset, guint32 size)
4436 /* Only ever called for ThreadLocal instances */
4437 g_assert (ACCESS_SPECIAL_STATIC_OFFSET (offset, type) == SPECIAL_STATIC_OFFSET_TYPE_THREAD);
4439 mono_threads_lock ();
4440 do_free_special_slot (offset, size);
4441 mono_threads_unlock ();
4445 static void CALLBACK dummy_apc (ULONG_PTR param)
4451 * mono_thread_execute_interruption
4453 * Performs the operation that the requested thread state requires (abort,
4456 static MonoException*
4457 mono_thread_execute_interruption (void)
4459 MonoInternalThread *thread = mono_thread_internal_current ();
4460 MonoThread *sys_thread = mono_thread_current ();
4462 LOCK_THREAD (thread);
4464 /* MonoThread::interruption_requested can only be changed with atomics */
4465 if (InterlockedCompareExchange (&thread->interruption_requested, FALSE, TRUE)) {
4466 /* this will consume pending APC calls */
4468 WaitForSingleObjectEx (GetCurrentThread(), 0, TRUE);
4470 InterlockedDecrement (&thread_interruption_requested);
4472 /* Clear the interrupted flag of the thread so it can wait again */
4473 mono_thread_info_clear_self_interrupt ();
4476 /* If there's a pending exception and an AbortRequested, the pending exception takes precedence */
4477 if (sys_thread->pending_exception) {
4480 exc = sys_thread->pending_exception;
4481 sys_thread->pending_exception = NULL;
4483 UNLOCK_THREAD (thread);
4485 } else if ((thread->state & ThreadState_AbortRequested) != 0) {
4486 UNLOCK_THREAD (thread);
4487 g_assert (sys_thread->pending_exception == NULL);
4488 if (thread->abort_exc == NULL) {
4490 * This might be racy, but it has to be called outside the lock
4491 * since it calls managed code.
4493 MONO_OBJECT_SETREF (thread, abort_exc, mono_get_exception_thread_abort ());
4495 return thread->abort_exc;
4497 else if ((thread->state & ThreadState_SuspendRequested) != 0) {
4498 /* calls UNLOCK_THREAD (thread) */
4499 self_suspend_internal ();
4502 else if ((thread->state & ThreadState_StopRequested) != 0) {
4503 /* FIXME: do this through the JIT? */
4505 UNLOCK_THREAD (thread);
4507 mono_thread_exit ();
4509 } else if (thread->thread_interrupt_requested) {
4511 thread->thread_interrupt_requested = FALSE;
4512 UNLOCK_THREAD (thread);
4514 return(mono_get_exception_thread_interrupted ());
4517 UNLOCK_THREAD (thread);
4523 * mono_thread_request_interruption
4525 * A signal handler can call this method to request the interruption of a
4526 * thread. The result of the interruption will depend on the current state of
4527 * the thread. If the result is an exception that needs to be throw, it is
4528 * provided as return value.
4531 mono_thread_request_interruption (gboolean running_managed)
4533 MonoInternalThread *thread = mono_thread_internal_current ();
4535 /* The thread may already be stopping */
4540 if (thread->interrupt_on_stop &&
4541 thread->state & ThreadState_StopRequested &&
4542 thread->state & ThreadState_Background)
4546 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4548 InterlockedIncrement (&thread_interruption_requested);
4550 if (!running_managed || is_running_protected_wrapper ()) {
4551 /* Can't stop while in unmanaged code. Increase the global interruption
4552 request count. When exiting the unmanaged method the count will be
4553 checked and the thread will be interrupted. */
4555 /* this will awake the thread if it is in WaitForSingleObject
4557 /* Our implementation of this function ignores the func argument */
4559 QueueUserAPC ((PAPCFUNC)dummy_apc, thread->handle, (ULONG_PTR)NULL);
4561 mono_thread_info_self_interrupt ();
4566 return mono_thread_execute_interruption ();
4570 /*This function should be called by a thread after it has exited all of
4571 * its handle blocks at interruption time.*/
4573 mono_thread_resume_interruption (void)
4575 MonoInternalThread *thread = mono_thread_internal_current ();
4576 gboolean still_aborting;
4578 /* The thread may already be stopping */
4582 LOCK_THREAD (thread);
4583 still_aborting = (thread->state & ThreadState_AbortRequested) != 0;
4584 UNLOCK_THREAD (thread);
4586 /*This can happen if the protected block called Thread::ResetAbort*/
4587 if (!still_aborting)
4590 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4592 InterlockedIncrement (&thread_interruption_requested);
4594 mono_thread_info_self_interrupt ();
4596 return mono_thread_execute_interruption ();
4599 gboolean mono_thread_interruption_requested ()
4601 if (thread_interruption_requested) {
4602 MonoInternalThread *thread = mono_thread_internal_current ();
4603 /* The thread may already be stopping */
4605 return (thread->interruption_requested);
4610 static MonoException*
4611 mono_thread_interruption_checkpoint_request (gboolean bypass_abort_protection)
4613 MonoInternalThread *thread = mono_thread_internal_current ();
4615 /* The thread may already be stopping */
4619 if (thread->interruption_requested && (bypass_abort_protection || !is_running_protected_wrapper ())) {
4620 MonoException* exc = mono_thread_execute_interruption ();
4628 * Performs the interruption of the current thread, if one has been requested,
4629 * and the thread is not running a protected wrapper.
4630 * Return the exception which needs to be thrown, if any.
4633 mono_thread_interruption_checkpoint (void)
4635 return mono_thread_interruption_checkpoint_request (FALSE);
4639 * Performs the interruption of the current thread, if one has been requested.
4640 * Return the exception which needs to be thrown, if any.
4643 mono_thread_force_interruption_checkpoint_noraise (void)
4645 return mono_thread_interruption_checkpoint_request (TRUE);
4649 * mono_set_pending_exception:
4651 * Set the pending exception of the current thread to EXC.
4652 * The exception will be thrown when execution returns to managed code.
4655 mono_set_pending_exception (MonoException *exc)
4657 MonoThread *thread = mono_thread_current ();
4659 /* The thread may already be stopping */
4663 MONO_OBJECT_SETREF (thread, pending_exception, exc);
4665 mono_thread_request_interruption (FALSE);
4669 * mono_thread_interruption_request_flag:
4671 * Returns the address of a flag that will be non-zero if an interruption has
4672 * been requested for a thread. The thread to interrupt may not be the current
4673 * thread, so an additional call to mono_thread_interruption_requested() or
4674 * mono_thread_interruption_checkpoint() is allways needed if the flag is not
4677 gint32* mono_thread_interruption_request_flag ()
4679 return &thread_interruption_requested;
4683 mono_thread_init_apartment_state (void)
4686 MonoInternalThread* thread = mono_thread_internal_current ();
4688 /* Positive return value indicates success, either
4689 * S_OK if this is first CoInitialize call, or
4690 * S_FALSE if CoInitialize already called, but with same
4691 * threading model. A negative value indicates failure,
4692 * probably due to trying to change the threading model.
4694 if (CoInitializeEx(NULL, (thread->apartment_state == ThreadApartmentState_STA)
4695 ? COINIT_APARTMENTTHREADED
4696 : COINIT_MULTITHREADED) < 0) {
4697 thread->apartment_state = ThreadApartmentState_Unknown;
4703 mono_thread_cleanup_apartment_state (void)
4706 MonoInternalThread* thread = mono_thread_internal_current ();
4708 if (thread && thread->apartment_state != ThreadApartmentState_Unknown) {
4715 mono_thread_set_state (MonoInternalThread *thread, MonoThreadState state)
4717 LOCK_THREAD (thread);
4718 thread->state |= state;
4719 UNLOCK_THREAD (thread);
4723 mono_thread_clr_state (MonoInternalThread *thread, MonoThreadState state)
4725 LOCK_THREAD (thread);
4726 thread->state &= ~state;
4727 UNLOCK_THREAD (thread);
4731 mono_thread_test_state (MonoInternalThread *thread, MonoThreadState test)
4733 gboolean ret = FALSE;
4735 LOCK_THREAD (thread);
4737 if ((thread->state & test) != 0) {
4741 UNLOCK_THREAD (thread);
4746 static gboolean has_tls_get = FALSE;
4749 mono_runtime_set_has_tls_get (gboolean val)
4755 mono_runtime_has_tls_get (void)
4761 self_interrupt_thread (void *_unused)
4763 MonoThreadInfo *info = mono_thread_info_current ();
4764 MonoException *exc = mono_thread_execute_interruption ();
4765 if (exc) /*We must use _with_context since we didn't trampoline into the runtime*/
4766 mono_raise_exception_with_context (exc, &info->thread_saved_state [ASYNC_SUSPEND_STATE_INDEX].ctx); /* FIXME using thread_saved_state [ASYNC_SUSPEND_STATE_INDEX] can race with another suspend coming in. */
4767 g_assert_not_reached (); /*this MUST not happen since we can't resume from an async call*/
4771 mono_jit_info_match (MonoJitInfo *ji, gpointer ip)
4775 return ji->code_start <= ip && (char*)ip < (char*)ji->code_start + ji->code_size;
4779 last_managed (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
4781 MonoJitInfo **dest = (MonoJitInfo **)data;
4787 mono_thread_info_get_last_managed (MonoThreadInfo *info)
4789 MonoJitInfo *ji = NULL;
4794 * The suspended thread might be holding runtime locks. Make sure we don't try taking
4795 * any runtime locks while unwinding. In coop case we shouldn't safepoint in regions
4796 * where we hold runtime locks.
4798 if (!mono_threads_is_coop_enabled ())
4799 mono_thread_info_set_is_async_context (TRUE);
4800 mono_get_eh_callbacks ()->mono_walk_stack_with_state (last_managed, mono_thread_info_get_suspend_state (info), MONO_UNWIND_SIGNAL_SAFE, &ji);
4801 if (!mono_threads_is_coop_enabled ())
4802 mono_thread_info_set_is_async_context (FALSE);
4807 MonoInternalThread *thread;
4808 gboolean install_async_abort;
4809 MonoThreadInfoInterruptToken *interrupt_token;
4812 static SuspendThreadResult
4813 async_abort_critical (MonoThreadInfo *info, gpointer ud)
4815 AbortThreadData *data = (AbortThreadData *)ud;
4816 MonoInternalThread *thread = data->thread;
4817 MonoJitInfo *ji = NULL;
4818 gboolean protected_wrapper;
4819 gboolean running_managed;
4821 if (mono_get_eh_callbacks ()->mono_install_handler_block_guard (mono_thread_info_get_suspend_state (info)))
4822 return MonoResumeThread;
4824 /*someone is already interrupting it*/
4825 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4826 return MonoResumeThread;
4828 InterlockedIncrement (&thread_interruption_requested);
4830 ji = mono_thread_info_get_last_managed (info);
4831 protected_wrapper = ji && !ji->is_trampoline && !ji->async && mono_threads_is_critical_method (mono_jit_info_get_method (ji));
4832 running_managed = mono_jit_info_match (ji, MONO_CONTEXT_GET_IP (&mono_thread_info_get_suspend_state (info)->ctx));
4834 if (!protected_wrapper && running_managed) {
4835 /*We are in managed code*/
4836 /*Set the thread to call */
4837 if (data->install_async_abort)
4838 mono_thread_info_setup_async_call (info, self_interrupt_thread, NULL);
4839 return MonoResumeThread;
4842 * This will cause waits to be broken.
4843 * It will also prevent the thread from entering a wait, so if the thread returns
4844 * from the wait before it receives the abort signal, it will just spin in the wait
4845 * functions in the io-layer until the signal handler calls QueueUserAPC which will
4848 data->interrupt_token = mono_thread_info_prepare_interrupt (info);
4850 return MonoResumeThread;
4855 async_abort_internal (MonoInternalThread *thread, gboolean install_async_abort)
4857 AbortThreadData data;
4859 g_assert (thread != mono_thread_internal_current ());
4861 data.thread = thread;
4862 data.install_async_abort = install_async_abort;
4863 data.interrupt_token = NULL;
4865 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), TRUE, async_abort_critical, &data);
4866 if (data.interrupt_token)
4867 mono_thread_info_finish_interrupt (data.interrupt_token);
4868 /*FIXME we need to wait for interruption to complete -- figure out how much into interruption we should wait for here*/
4872 self_abort_internal (MonoError *error)
4876 mono_error_init (error);
4878 /* FIXME this is insanely broken, it doesn't cause interruption to happen synchronously
4879 * since passing FALSE to mono_thread_request_interruption makes sure it returns NULL */
4881 exc = mono_thread_request_interruption (TRUE);
4883 mono_error_set_exception_instance (error, exc);
4885 mono_thread_info_self_interrupt ();
4889 MonoInternalThread *thread;
4891 MonoThreadInfoInterruptToken *interrupt_token;
4892 } SuspendThreadData;
4894 static SuspendThreadResult
4895 async_suspend_critical (MonoThreadInfo *info, gpointer ud)
4897 SuspendThreadData *data = (SuspendThreadData *)ud;
4898 MonoInternalThread *thread = data->thread;
4899 MonoJitInfo *ji = NULL;
4900 gboolean protected_wrapper;
4901 gboolean running_managed;
4903 ji = mono_thread_info_get_last_managed (info);
4904 protected_wrapper = ji && !ji->is_trampoline && !ji->async && mono_threads_is_critical_method (mono_jit_info_get_method (ji));
4905 running_managed = mono_jit_info_match (ji, MONO_CONTEXT_GET_IP (&mono_thread_info_get_suspend_state (info)->ctx));
4907 if (running_managed && !protected_wrapper) {
4908 thread->state &= ~ThreadState_SuspendRequested;
4909 thread->state |= ThreadState_Suspended;
4910 return KeepSuspended;
4912 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 0)
4913 InterlockedIncrement (&thread_interruption_requested);
4914 if (data->interrupt)
4915 data->interrupt_token = mono_thread_info_prepare_interrupt ((MonoThreadInfo *)thread->thread_info);
4917 return MonoResumeThread;
4921 /* LOCKING: called with @thread synch_cs held, and releases it */
4923 async_suspend_internal (MonoInternalThread *thread, gboolean interrupt)
4925 SuspendThreadData data;
4927 g_assert (thread != mono_thread_internal_current ());
4929 data.thread = thread;
4930 data.interrupt = interrupt;
4931 data.interrupt_token = NULL;
4933 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), interrupt, async_suspend_critical, &data);
4934 if (data.interrupt_token)
4935 mono_thread_info_finish_interrupt (data.interrupt_token);
4937 UNLOCK_THREAD (thread);
4940 /* LOCKING: called with @thread synch_cs held, and releases it */
4942 self_suspend_internal (void)
4944 MonoInternalThread *thread;
4946 thread = mono_thread_internal_current ();
4948 mono_thread_info_begin_self_suspend ();
4949 thread->state &= ~ThreadState_SuspendRequested;
4950 thread->state |= ThreadState_Suspended;
4952 UNLOCK_THREAD (thread);
4954 mono_thread_info_end_self_suspend ();
4958 * mono_thread_is_foreign:
4959 * @thread: the thread to query
4961 * This function allows one to determine if a thread was created by the mono runtime and has
4962 * a well defined lifecycle or it's a foreigh one, created by the native environment.
4964 * Returns: TRUE if @thread was not created by the runtime.
4967 mono_thread_is_foreign (MonoThread *thread)
4969 MonoThreadInfo *info = (MonoThreadInfo *)thread->internal_thread->thread_info;
4970 return info->runtime_thread == FALSE;
4974 * mono_add_joinable_thread:
4976 * Add TID to the list of joinable threads.
4977 * LOCKING: Acquires the threads lock.
4980 mono_threads_add_joinable_thread (gpointer tid)
4984 * We cannot detach from threads because it causes problems like
4985 * 2fd16f60/r114307. So we collect them and join them when
4986 * we have time (in he finalizer thread).
4988 joinable_threads_lock ();
4989 if (!joinable_threads)
4990 joinable_threads = g_hash_table_new (NULL, NULL);
4991 g_hash_table_insert (joinable_threads, tid, tid);
4992 joinable_thread_count ++;
4993 joinable_threads_unlock ();
4995 mono_gc_finalize_notify ();
5000 * mono_threads_join_threads:
5002 * Join all joinable threads. This is called from the finalizer thread.
5003 * LOCKING: Acquires the threads lock.
5006 mono_threads_join_threads (void)
5009 GHashTableIter iter;
5016 if (!joinable_thread_count)
5020 joinable_threads_lock ();
5022 if (g_hash_table_size (joinable_threads)) {
5023 g_hash_table_iter_init (&iter, joinable_threads);
5024 g_hash_table_iter_next (&iter, &key, (void**)&tid);
5025 thread = (pthread_t)tid;
5026 g_hash_table_remove (joinable_threads, key);
5027 joinable_thread_count --;
5030 joinable_threads_unlock ();
5032 if (thread != pthread_self ())
5033 /* This shouldn't block */
5034 pthread_join (thread, NULL);
5045 * Wait for thread TID to exit.
5046 * LOCKING: Acquires the threads lock.
5049 mono_thread_join (gpointer tid)
5053 gboolean found = FALSE;
5055 joinable_threads_lock ();
5056 if (!joinable_threads)
5057 joinable_threads = g_hash_table_new (NULL, NULL);
5058 if (g_hash_table_lookup (joinable_threads, tid)) {
5059 g_hash_table_remove (joinable_threads, tid);
5060 joinable_thread_count --;
5063 joinable_threads_unlock ();
5066 thread = (pthread_t)tid;
5067 pthread_join (thread, NULL);
5072 mono_thread_internal_check_for_interruption_critical (MonoInternalThread *thread)
5074 if ((thread->state & (ThreadState_StopRequested | ThreadState_SuspendRequested)) != 0)
5075 mono_thread_interruption_checkpoint ();
5078 static inline gboolean
5079 is_appdomainunloaded_exception (MonoClass *klass)
5081 return klass == mono_class_get_appdomain_unloaded_exception_class ();
5084 static inline gboolean
5085 is_threadabort_exception (MonoClass *klass)
5087 return klass == mono_defaults.threadabortexception_class;
5091 mono_thread_internal_unhandled_exception (MonoObject* exc)
5093 if (mono_runtime_unhandled_exception_policy_get () == MONO_UNHANDLED_POLICY_CURRENT) {
5094 MonoClass *klass = exc->vtable->klass;
5095 if (is_threadabort_exception (klass)) {
5096 mono_thread_internal_reset_abort (mono_thread_internal_current ());
5097 } else if (!is_appdomainunloaded_exception (klass)) {
5098 mono_unhandled_exception (exc);
5099 if (mono_environment_exitcode_get () == 1)
5106 ves_icall_System_Threading_Thread_GetStackTraces (MonoArray **out_threads, MonoArray **out_stack_traces)
5108 mono_threads_get_thread_dump (out_threads, out_stack_traces);