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/mono-threads-coop.h>
41 #include <mono/utils/hazard-pointer.h>
42 #include <mono/utils/mono-tls.h>
43 #include <mono/utils/atomic.h>
44 #include <mono/utils/mono-memory-model.h>
45 #include <mono/utils/mono-threads-coop.h>
46 #include <mono/utils/mono-error-internals.h>
47 #include <mono/utils/os-event.h>
48 #include <mono/utils/mono-threads-debug.h>
49 #include <mono/metadata/w32handle.h>
50 #include <mono/metadata/w32event.h>
51 #include <mono/metadata/w32mutex.h>
53 #include <mono/metadata/gc-internals.h>
54 #include <mono/metadata/reflection-internals.h>
55 #include <mono/metadata/abi-details.h>
61 #if defined(HOST_WIN32)
65 #if defined(PLATFORM_ANDROID) && !defined(TARGET_ARM64) && !defined(TARGET_AMD64)
66 #define USE_TKILL_ON_ANDROID 1
69 #ifdef PLATFORM_ANDROID
72 #ifdef USE_TKILL_ON_ANDROID
73 extern int tkill (pid_t tid, int signal);
77 /*#define THREAD_DEBUG(a) do { a; } while (0)*/
78 #define THREAD_DEBUG(a)
79 /*#define THREAD_WAIT_DEBUG(a) do { a; } while (0)*/
80 #define THREAD_WAIT_DEBUG(a)
81 /*#define LIBGC_DEBUG(a) do { a; } while (0)*/
82 #define LIBGC_DEBUG(a)
84 #define SPIN_TRYLOCK(i) (InterlockedCompareExchange (&(i), 1, 0) == 0)
85 #define SPIN_LOCK(i) do { \
86 if (SPIN_TRYLOCK (i)) \
90 #define SPIN_UNLOCK(i) i = 0
92 #define LOCK_THREAD(thread) lock_thread((thread))
93 #define UNLOCK_THREAD(thread) unlock_thread((thread))
105 typedef struct _StaticDataFreeList StaticDataFreeList;
106 struct _StaticDataFreeList {
107 StaticDataFreeList *next;
115 StaticDataFreeList *freelist;
118 /* Number of cached culture objects in the MonoThread->cached_culture_info array
119 * (per-type): we use the first NUM entries for CultureInfo and the last for
120 * UICultureInfo. So the size of the array is really NUM_CACHED_CULTURES * 2.
122 #define NUM_CACHED_CULTURES 4
123 #define CULTURES_START_IDX 0
124 #define UICULTURES_START_IDX NUM_CACHED_CULTURES
126 /* Controls access to the 'threads' hash table */
127 static void mono_threads_lock (void);
128 static void mono_threads_unlock (void);
129 static MonoCoopMutex threads_mutex;
131 /* Controls access to the 'joinable_threads' hash table */
132 #define joinable_threads_lock() mono_os_mutex_lock (&joinable_threads_mutex)
133 #define joinable_threads_unlock() mono_os_mutex_unlock (&joinable_threads_mutex)
134 static mono_mutex_t joinable_threads_mutex;
136 /* Holds current status of static data heap */
137 static StaticDataInfo thread_static_info;
138 static StaticDataInfo context_static_info;
140 /* The hash of existing threads (key is thread ID, value is
141 * MonoInternalThread*) that need joining before exit
143 static MonoGHashTable *threads=NULL;
145 /* List of app context GC handles.
146 * Added to from ves_icall_System_Runtime_Remoting_Contexts_Context_RegisterContext ().
148 static GHashTable *contexts = NULL;
150 /* Cleanup queue for contexts. */
151 static MonoReferenceQueue *context_queue;
154 * Threads which are starting up and they are not in the 'threads' hash yet.
155 * When mono_thread_attach_internal is called for a thread, it will be removed from this hash table.
156 * Protected by mono_threads_lock ().
158 static MonoGHashTable *threads_starting_up = NULL;
160 /* The TLS key that holds the MonoObject assigned to each thread */
161 static MonoNativeTlsKey current_object_key;
164 /* Protected by the threads lock */
165 static GHashTable *joinable_threads;
166 static int joinable_thread_count;
168 #ifdef MONO_HAVE_FAST_TLS
169 /* we need to use both the Tls* functions and __thread because
170 * the gc needs to see all the threads
172 MONO_FAST_TLS_DECLARE(tls_current_object);
173 #define SET_CURRENT_OBJECT(x) do { \
174 MONO_FAST_TLS_SET (tls_current_object, x); \
175 mono_native_tls_set_value (current_object_key, x); \
177 #define GET_CURRENT_OBJECT() ((MonoInternalThread*) MONO_FAST_TLS_GET (tls_current_object))
179 #define SET_CURRENT_OBJECT(x) mono_native_tls_set_value (current_object_key, x)
180 #define GET_CURRENT_OBJECT() (MonoInternalThread*) mono_native_tls_get_value (current_object_key)
183 /* function called at thread start */
184 static MonoThreadStartCB mono_thread_start_cb = NULL;
186 /* function called at thread attach */
187 static MonoThreadAttachCB mono_thread_attach_cb = NULL;
189 /* function called at thread cleanup */
190 static MonoThreadCleanupFunc mono_thread_cleanup_fn = NULL;
192 /* The default stack size for each thread */
193 static guint32 default_stacksize = 0;
194 #define default_stacksize_for_thread(thread) ((thread)->stack_size? (thread)->stack_size: default_stacksize)
196 static void context_adjust_static_data (MonoAppContext *ctx);
197 static void mono_free_static_data (gpointer* static_data);
198 static void mono_init_static_data_info (StaticDataInfo *static_data);
199 static guint32 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align);
200 static gboolean mono_thread_resume (MonoInternalThread* thread);
201 static void async_abort_internal (MonoInternalThread *thread, gboolean install_async_abort);
202 static void self_abort_internal (MonoError *error);
203 static void async_suspend_internal (MonoInternalThread *thread, gboolean interrupt);
204 static void self_suspend_internal (void);
206 static MonoException* mono_thread_execute_interruption (void);
207 static void ref_stack_destroy (gpointer rs);
209 /* Spin lock for InterlockedXXX 64 bit functions */
210 #define mono_interlocked_lock() mono_os_mutex_lock (&interlocked_mutex)
211 #define mono_interlocked_unlock() mono_os_mutex_unlock (&interlocked_mutex)
212 static mono_mutex_t interlocked_mutex;
214 /* global count of thread interruptions requested */
215 static gint32 thread_interruption_requested = 0;
217 /* Event signaled when a thread changes its background mode */
218 static MonoOSEvent background_change_event;
220 static gboolean shutting_down = FALSE;
222 static gint32 managed_thread_id_counter = 0;
224 /* Class lazy loading functions */
225 static GENERATE_GET_CLASS_WITH_CACHE (appdomain_unloaded_exception, System, AppDomainUnloadedException)
228 mono_threads_lock (void)
230 mono_locks_coop_acquire (&threads_mutex, ThreadsLock);
234 mono_threads_unlock (void)
236 mono_locks_coop_release (&threads_mutex, ThreadsLock);
241 get_next_managed_thread_id (void)
243 return InterlockedIncrement (&managed_thread_id_counter);
247 mono_thread_get_tls_key (void)
249 return current_object_key;
253 mono_thread_get_tls_offset (void)
258 if (current_object_key)
259 offset = current_object_key;
261 MONO_THREAD_VAR_OFFSET (tls_current_object,offset);
266 static inline MonoNativeThreadId
267 thread_get_tid (MonoInternalThread *thread)
269 /* We store the tid as a guint64 to keep the object layout constant between platforms */
270 return MONO_UINT_TO_NATIVE_THREAD_ID (thread->tid);
273 static void ensure_synch_cs_set (MonoInternalThread *thread)
275 MonoCoopMutex *synch_cs;
277 if (thread->synch_cs != NULL) {
281 synch_cs = g_new0 (MonoCoopMutex, 1);
282 mono_coop_mutex_init_recursive (synch_cs);
284 if (InterlockedCompareExchangePointer ((gpointer *)&thread->synch_cs,
285 synch_cs, NULL) != NULL) {
286 /* Another thread must have installed this CS */
287 mono_coop_mutex_destroy (synch_cs);
293 lock_thread (MonoInternalThread *thread)
295 if (!thread->synch_cs)
296 ensure_synch_cs_set (thread);
298 g_assert (thread->synch_cs);
300 mono_coop_mutex_lock (thread->synch_cs);
304 unlock_thread (MonoInternalThread *thread)
306 mono_coop_mutex_unlock (thread->synch_cs);
309 static inline gboolean
310 is_appdomainunloaded_exception (MonoClass *klass)
312 return klass == mono_class_get_appdomain_unloaded_exception_class ();
315 static inline gboolean
316 is_threadabort_exception (MonoClass *klass)
318 return klass == mono_defaults.threadabortexception_class;
322 * NOTE: this function can be called also for threads different from the current one:
323 * make sure no code called from it will ever assume it is run on the thread that is
324 * getting cleaned up.
326 static void thread_cleanup (MonoInternalThread *thread)
330 g_assert (thread != NULL);
332 if (thread->abort_state_handle) {
333 mono_gchandle_free (thread->abort_state_handle);
334 thread->abort_state_handle = 0;
336 thread->abort_exc = NULL;
337 thread->current_appcontext = NULL;
340 * This is necessary because otherwise we might have
341 * cross-domain references which will not get cleaned up when
342 * the target domain is unloaded.
344 if (thread->cached_culture_info) {
346 for (i = 0; i < NUM_CACHED_CULTURES * 2; ++i)
347 mono_array_set (thread->cached_culture_info, MonoObject*, i, NULL);
351 * thread->synch_cs can be NULL if this was called after
352 * ves_icall_System_Threading_InternalThread_Thread_free_internal.
353 * This can happen only during shutdown.
354 * The shutting_down flag is not always set, so we can't assert on it.
356 if (thread->synch_cs)
357 LOCK_THREAD (thread);
359 thread->state |= ThreadState_Stopped;
360 thread->state &= ~ThreadState_Background;
362 if (thread->synch_cs)
363 UNLOCK_THREAD (thread);
366 An interruption request has leaked to cleanup. Adjust the global counter.
368 This can happen is the abort source thread finds the abortee (this) thread
369 in unmanaged code. If this thread never trips back to managed code or check
370 the local flag it will be left set and positively unbalance the global counter.
372 Leaving the counter unbalanced will cause a performance degradation since all threads
373 will now keep checking their local flags all the time.
375 if (InterlockedExchange (&thread->interruption_requested, 0))
376 InterlockedDecrement (&thread_interruption_requested);
378 mono_threads_lock ();
382 } else if (mono_g_hash_table_lookup (threads, (gpointer)thread->tid) != thread) {
383 /* We have to check whether the thread object for the
384 * tid is still the same in the table because the
385 * thread might have been destroyed and the tid reused
386 * in the meantime, in which case the tid would be in
387 * the table, but with another thread object.
391 mono_g_hash_table_remove (threads, (gpointer)thread->tid);
395 mono_threads_unlock ();
397 /* Don't close the handle here, wait for the object finalizer
398 * to do it. Otherwise, the following race condition applies:
400 * 1) Thread exits (and thread_cleanup() closes the handle)
402 * 2) Some other handle is reassigned the same slot
404 * 3) Another thread tries to join the first thread, and
405 * blocks waiting for the reassigned handle to be signalled
406 * (which might never happen). This is possible, because the
407 * thread calling Join() still has a reference to the first
411 /* if the thread is not in the hash it has been removed already */
413 if (thread == mono_thread_internal_current ()) {
414 mono_domain_unset ();
415 mono_memory_barrier ();
417 if (mono_thread_cleanup_fn)
418 mono_thread_cleanup_fn (thread_get_tid (thread));
421 mono_release_type_locks (thread);
423 /* Can happen when we attach the profiler helper thread in order to heapshot. */
424 if (!mono_thread_info_lookup (MONO_UINT_TO_NATIVE_THREAD_ID (thread->tid))->tools_thread)
425 mono_profiler_thread_end (thread->tid);
427 mono_hazard_pointer_clear (mono_hazard_pointer_get (), 1);
429 if (thread == mono_thread_internal_current ()) {
431 * This will signal async signal handlers that the thread has exited.
432 * The profiler callback needs this to be set, so it cannot be done earlier.
434 mono_domain_unset ();
435 mono_memory_barrier ();
438 if (thread == mono_thread_internal_current ())
439 mono_thread_pop_appdomain_ref ();
441 thread->cached_culture_info = NULL;
443 mono_free_static_data (thread->static_data);
444 thread->static_data = NULL;
445 ref_stack_destroy (thread->appdomain_refs);
446 thread->appdomain_refs = NULL;
448 if (mono_thread_cleanup_fn)
449 mono_thread_cleanup_fn (thread_get_tid (thread));
451 if (mono_gc_is_moving ()) {
452 MONO_GC_UNREGISTER_ROOT (thread->thread_pinning_ref);
453 thread->thread_pinning_ref = NULL;
459 * A special static data offset (guint32) consists of 3 parts:
461 * [0] 6-bit index into the array of chunks.
462 * [6] 25-bit offset into the array.
463 * [31] Bit indicating thread or context static.
468 #if G_BYTE_ORDER != G_LITTLE_ENDIAN
479 } SpecialStaticOffset;
481 #define SPECIAL_STATIC_OFFSET_TYPE_THREAD 0
482 #define SPECIAL_STATIC_OFFSET_TYPE_CONTEXT 1
484 #define MAKE_SPECIAL_STATIC_OFFSET(index, offset, type) \
485 ((SpecialStaticOffset) { .fields = { (index), (offset), (type) } }.raw)
486 #define ACCESS_SPECIAL_STATIC_OFFSET(x,f) \
487 (((SpecialStaticOffset *) &(x))->fields.f)
490 get_thread_static_data (MonoInternalThread *thread, guint32 offset)
492 g_assert (ACCESS_SPECIAL_STATIC_OFFSET (offset, type) == SPECIAL_STATIC_OFFSET_TYPE_THREAD);
494 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
495 int off = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
497 return ((char *) thread->static_data [idx]) + off;
501 get_context_static_data (MonoAppContext *ctx, guint32 offset)
503 g_assert (ACCESS_SPECIAL_STATIC_OFFSET (offset, type) == SPECIAL_STATIC_OFFSET_TYPE_CONTEXT);
505 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
506 int off = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
508 return ((char *) ctx->static_data [idx]) + off;
512 get_current_thread_ptr_for_domain (MonoDomain *domain, MonoInternalThread *thread)
514 static MonoClassField *current_thread_field = NULL;
518 if (!current_thread_field) {
519 current_thread_field = mono_class_get_field_from_name (mono_defaults.thread_class, "current_thread");
520 g_assert (current_thread_field);
523 mono_class_vtable (domain, mono_defaults.thread_class);
524 mono_domain_lock (domain);
525 offset = GPOINTER_TO_UINT (g_hash_table_lookup (domain->special_static_fields, current_thread_field));
526 mono_domain_unlock (domain);
529 return (MonoThread **)get_thread_static_data (thread, offset);
533 set_current_thread_for_domain (MonoDomain *domain, MonoInternalThread *thread, MonoThread *current)
535 MonoThread **current_thread_ptr = get_current_thread_ptr_for_domain (domain, thread);
537 g_assert (current->obj.vtable->domain == domain);
539 g_assert (!*current_thread_ptr);
540 *current_thread_ptr = current;
544 create_thread_object (MonoDomain *domain, MonoInternalThread *internal)
550 vtable = mono_class_vtable (domain, mono_defaults.thread_class);
553 thread = (MonoThread*)mono_object_new_mature (vtable, &error);
554 /* only possible failure mode is OOM, from which we don't expect to recover. */
555 mono_error_assert_ok (&error);
557 MONO_OBJECT_SETREF (thread, internal_thread, internal);
562 static MonoInternalThread*
563 create_internal_thread_object (void)
566 MonoInternalThread *thread;
569 vt = mono_class_vtable (mono_get_root_domain (), mono_defaults.internal_thread_class);
570 thread = (MonoInternalThread*) mono_object_new_mature (vt, &error);
571 /* only possible failure mode is OOM, from which we don't exect to recover */
572 mono_error_assert_ok (&error);
574 thread->synch_cs = g_new0 (MonoCoopMutex, 1);
575 mono_coop_mutex_init_recursive (thread->synch_cs);
577 thread->apartment_state = ThreadApartmentState_Unknown;
578 thread->managed_id = get_next_managed_thread_id ();
579 if (mono_gc_is_moving ()) {
580 thread->thread_pinning_ref = thread;
581 MONO_GC_REGISTER_ROOT_PINNING (thread->thread_pinning_ref, MONO_ROOT_SOURCE_THREADING, "thread pinning reference");
584 thread->priority = MONO_THREAD_PRIORITY_NORMAL;
586 thread->suspended = g_new0 (MonoOSEvent, 1);
587 mono_os_event_init (thread->suspended, TRUE);
593 mono_thread_internal_set_priority (MonoInternalThread *internal, MonoThreadPriority priority)
597 g_assert (priority >= MONO_THREAD_PRIORITY_LOWEST);
598 g_assert (priority <= MONO_THREAD_PRIORITY_HIGHEST);
599 g_assert (MONO_THREAD_PRIORITY_LOWEST < MONO_THREAD_PRIORITY_HIGHEST);
604 g_assert (internal->native_handle);
606 res = SetThreadPriority (internal->native_handle, priority - 2);
608 g_error ("%s: SetThreadPriority failed, error %d", __func__, GetLastError ());
609 #else /* HOST_WIN32 */
612 struct sched_param param;
615 tid = thread_get_tid (internal);
617 res = pthread_getschedparam (tid, &policy, ¶m);
619 g_error ("%s: pthread_getschedparam failed, error: \"%s\" (%d)", __func__, g_strerror (res), res);
621 #ifdef _POSIX_PRIORITY_SCHEDULING
624 /* Necessary to get valid priority range */
626 min = sched_get_priority_min (policy);
627 max = sched_get_priority_max (policy);
629 if (max > 0 && min >= 0 && max > min) {
630 double srange, drange, sposition, dposition;
631 srange = MONO_THREAD_PRIORITY_HIGHEST - MONO_THREAD_PRIORITY_LOWEST;
633 sposition = priority - MONO_THREAD_PRIORITY_LOWEST;
634 dposition = (sposition / srange) * drange;
635 param.sched_priority = (int)(dposition + min);
642 param.sched_priority = 50;
648 param.sched_priority = 0;
651 g_error ("%s: unknown policy %d", __func__, policy);
655 res = pthread_setschedparam (tid, policy, ¶m);
658 g_warning ("%s: pthread_setschedparam failed, error: \"%s\" (%d)", __func__, g_strerror (res), res);
661 g_error ("%s: pthread_setschedparam failed, error: \"%s\" (%d)", __func__, g_strerror (res), res);
663 #endif /* HOST_WIN32 */
667 mono_alloc_static_data (gpointer **static_data_ptr, guint32 offset, gboolean threadlocal);
670 mono_thread_attach_internal (MonoThread *thread, gboolean force_attach, gboolean force_domain, gsize *stack_ptr)
672 MonoThreadInfo *info;
673 MonoInternalThread *internal;
674 MonoDomain *domain, *root_domain;
678 info = mono_thread_info_current ();
680 internal = thread->internal_thread;
681 internal->handle = mono_threads_open_thread_handle (info->handle);
683 internal->native_handle = OpenThread (THREAD_ALL_ACCESS, FALSE, GetCurrentThreadId ());
685 internal->tid = MONO_NATIVE_THREAD_ID_TO_UINT (mono_native_thread_id_get ());
686 internal->thread_info = info;
687 internal->small_id = info->small_id;
688 internal->stack_ptr = stack_ptr;
690 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Setting current_object_key to %p", __func__, mono_native_thread_id_get (), internal));
692 SET_CURRENT_OBJECT (internal);
694 domain = mono_object_domain (thread);
696 mono_thread_push_appdomain_ref (domain);
697 if (!mono_domain_set (domain, force_domain)) {
698 mono_thread_pop_appdomain_ref ();
702 mono_threads_lock ();
704 if (threads_starting_up)
705 mono_g_hash_table_remove (threads_starting_up, thread);
707 if (shutting_down && !force_attach) {
708 mono_threads_unlock ();
713 MONO_GC_REGISTER_ROOT_FIXED (threads, MONO_ROOT_SOURCE_THREADING, "threads table");
714 threads = mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_VALUE_GC, MONO_ROOT_SOURCE_THREADING, "threads table");
717 /* We don't need to duplicate thread->handle, because it is
718 * only closed when the thread object is finalized by the GC. */
719 mono_g_hash_table_insert (threads, (gpointer)(gsize)(internal->tid), internal);
721 /* We have to do this here because mono_thread_start_cb
722 * requires that root_domain_thread is set up. */
723 if (thread_static_info.offset || thread_static_info.idx > 0) {
724 /* get the current allocated size */
725 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (thread_static_info.idx, thread_static_info.offset, 0);
726 mono_alloc_static_data (&internal->static_data, offset, TRUE);
729 mono_threads_unlock ();
731 root_domain = mono_get_root_domain ();
733 g_assert (!internal->root_domain_thread);
734 if (domain != root_domain)
735 MONO_OBJECT_SETREF (internal, root_domain_thread, create_thread_object (root_domain, internal));
737 MONO_OBJECT_SETREF (internal, root_domain_thread, thread);
739 if (domain != root_domain)
740 set_current_thread_for_domain (root_domain, internal, internal->root_domain_thread);
742 set_current_thread_for_domain (domain, internal, thread);
744 THREAD_DEBUG (g_message ("%s: Attached thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, internal->tid, internal->handle));
752 MonoObject *start_delegate;
753 MonoObject *start_delegate_arg;
754 MonoThreadStart start_func;
755 gpointer start_func_arg;
757 MonoCoopSem registered;
760 static guint32 WINAPI start_wrapper_internal(StartInfo *start_info, gsize *stack_ptr)
763 MonoThreadStart start_func;
764 void *start_func_arg;
767 * We don't create a local to hold start_info->thread, so hopefully it won't get pinned during a
771 MonoInternalThread *internal;
772 MonoObject *start_delegate;
773 MonoObject *start_delegate_arg;
776 thread = start_info->thread;
777 internal = thread->internal_thread;
778 domain = mono_object_domain (start_info->thread);
780 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper", __func__, mono_native_thread_id_get ()));
782 if (!mono_thread_attach_internal (thread, FALSE, FALSE, stack_ptr)) {
783 start_info->failed = TRUE;
785 mono_coop_sem_post (&start_info->registered);
787 if (InterlockedDecrement (&start_info->ref) == 0) {
788 mono_coop_sem_destroy (&start_info->registered);
795 mono_thread_internal_set_priority (internal, internal->priority);
799 start_delegate = start_info->start_delegate;
800 start_delegate_arg = start_info->start_delegate_arg;
801 start_func = start_info->start_func;
802 start_func_arg = start_info->start_func_arg;
804 /* This MUST be called before any managed code can be
805 * executed, as it calls the callback function that (for the
806 * jit) sets the lmf marker.
809 if (mono_thread_start_cb)
810 mono_thread_start_cb (tid, stack_ptr, start_func);
812 /* On 2.0 profile (and higher), set explicitly since state might have been
814 if (internal->apartment_state == ThreadApartmentState_Unknown)
815 internal->apartment_state = ThreadApartmentState_MTA;
817 mono_thread_init_apartment_state ();
819 /* Let the thread that called Start() know we're ready */
820 mono_coop_sem_post (&start_info->registered);
822 if (InterlockedDecrement (&start_info->ref) == 0) {
823 mono_coop_sem_destroy (&start_info->registered);
827 /* start_info is not valid anymore */
831 * Call this after calling start_notify, since the profiler callback might want
832 * to lock the thread, and the lock is held by thread_start () which waits for
835 mono_profiler_thread_start (tid);
837 /* if the name was set before starting, we didn't invoke the profiler callback */
838 if (internal->name) {
839 char *tname = g_utf16_to_utf8 (internal->name, internal->name_len, NULL, NULL, NULL);
840 mono_profiler_thread_name (internal->tid, tname);
841 mono_native_thread_set_name (MONO_UINT_TO_NATIVE_THREAD_ID (internal->tid), tname);
845 /* start_func is set only for unmanaged start functions */
847 start_func (start_func_arg);
851 g_assert (start_delegate != NULL);
853 /* we may want to handle the exception here. See comment below on unhandled exceptions */
854 args [0] = (gpointer) start_delegate_arg;
855 mono_runtime_delegate_invoke_checked (start_delegate, args, &error);
857 if (!mono_error_ok (&error)) {
858 MonoException *ex = mono_error_convert_to_exception (&error);
860 g_assert (ex != NULL);
861 MonoClass *klass = mono_object_get_class (&ex->object);
862 if ((mono_runtime_unhandled_exception_policy_get () != MONO_UNHANDLED_POLICY_LEGACY) &&
863 !is_threadabort_exception (klass)) {
864 mono_unhandled_exception (&ex->object);
865 mono_invoke_unhandled_exception_hook (&ex->object);
866 g_assert_not_reached ();
869 mono_error_cleanup (&error);
873 /* If the thread calls ExitThread at all, this remaining code
874 * will not be executed, but the main thread will eventually
875 * call thread_cleanup() on this thread's behalf.
878 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper terminating", __func__, mono_native_thread_id_get ()));
880 /* Do any cleanup needed for apartment state. This
881 * cannot be done in thread_cleanup since thread_cleanup could be
882 * called for a thread other than the current thread.
883 * mono_thread_cleanup_apartment_state cleans up apartment
884 * for the current thead */
885 mono_thread_cleanup_apartment_state ();
887 mono_thread_detach_internal (internal);
894 static gsize WINAPI start_wrapper(void *data)
896 volatile gsize dummy;
898 return start_wrapper_internal ((StartInfo*) data, (gsize*) &dummy);
904 * Common thread creation code.
905 * LOCKING: Acquires the threads lock.
908 create_thread (MonoThread *thread, MonoInternalThread *internal, MonoObject *start_delegate, MonoThreadStart start_func, gpointer start_func_arg,
909 gboolean threadpool_thread, guint32 stack_size, MonoError *error)
911 StartInfo *start_info = NULL;
912 MonoThreadHandle *thread_handle;
913 MonoNativeThreadId tid;
915 gsize stack_set_size;
918 g_assert (!start_func && !start_func_arg);
920 g_assert (!start_delegate);
923 * Join joinable threads to prevent running out of threads since the finalizer
924 * thread might be blocked/backlogged.
926 mono_threads_join_threads ();
928 mono_error_init (error);
930 mono_threads_lock ();
932 mono_threads_unlock ();
935 if (threads_starting_up == NULL) {
936 MONO_GC_REGISTER_ROOT_FIXED (threads_starting_up, MONO_ROOT_SOURCE_THREADING, "starting threads table");
937 threads_starting_up = mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_KEY_VALUE_GC, MONO_ROOT_SOURCE_THREADING, "starting threads table");
939 mono_g_hash_table_insert (threads_starting_up, thread, thread);
940 mono_threads_unlock ();
942 internal->threadpool_thread = threadpool_thread;
943 if (threadpool_thread)
944 mono_thread_set_state (internal, ThreadState_Background);
946 start_info = g_new0 (StartInfo, 1);
948 start_info->thread = thread;
949 start_info->start_delegate = start_delegate;
950 start_info->start_delegate_arg = thread->start_obj;
951 start_info->start_func = start_func;
952 start_info->start_func_arg = start_func_arg;
953 start_info->failed = FALSE;
954 mono_coop_sem_init (&start_info->registered, 0);
957 stack_set_size = default_stacksize_for_thread (internal);
961 thread_handle = mono_threads_create_thread (start_wrapper, start_info, &stack_set_size, &tid);
963 if (thread_handle == NULL) {
964 /* The thread couldn't be created, so set an exception */
965 mono_threads_lock ();
966 mono_g_hash_table_remove (threads_starting_up, thread);
967 mono_threads_unlock ();
968 mono_error_set_execution_engine (error, "Couldn't create thread. Error 0x%x", GetLastError());
969 /* ref is not going to be decremented in start_wrapper_internal */
970 InterlockedDecrement (&start_info->ref);
975 internal->stack_size = (int) stack_set_size;
977 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Launching thread %p (%"G_GSIZE_FORMAT")", __func__, mono_native_thread_id_get (), internal, (gsize)internal->tid));
980 * Wait for the thread to set up its TLS data etc, so
981 * theres no potential race condition if someone tries
982 * to look up the data believing the thread has
986 mono_coop_sem_wait (&start_info->registered, MONO_SEM_FLAGS_NONE);
988 mono_threads_close_thread_handle (thread_handle);
990 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));
992 ret = !start_info->failed;
995 if (InterlockedDecrement (&start_info->ref) == 0) {
996 mono_coop_sem_destroy (&start_info->registered);
1003 void mono_thread_new_init (intptr_t tid, gpointer stack_start, gpointer func)
1005 if (mono_thread_start_cb) {
1006 mono_thread_start_cb (tid, stack_start, func);
1010 void mono_threads_set_default_stacksize (guint32 stacksize)
1012 default_stacksize = stacksize;
1015 guint32 mono_threads_get_default_stacksize (void)
1017 return default_stacksize;
1021 * mono_thread_create_internal:
1023 * ARG should not be a GC reference.
1026 mono_thread_create_internal (MonoDomain *domain, gpointer func, gpointer arg, gboolean threadpool_thread, guint32 stack_size, MonoError *error)
1029 MonoInternalThread *internal;
1032 mono_error_init (error);
1034 internal = create_internal_thread_object ();
1036 thread = create_thread_object (domain, internal);
1038 LOCK_THREAD (internal);
1040 res = create_thread (thread, internal, NULL, (MonoThreadStart) func, arg, threadpool_thread, stack_size, error);
1041 return_val_if_nok (error, NULL);
1043 UNLOCK_THREAD (internal);
1049 mono_thread_create (MonoDomain *domain, gpointer func, gpointer arg)
1052 if (!mono_thread_create_checked (domain, func, arg, &error))
1053 mono_error_cleanup (&error);
1057 mono_thread_create_checked (MonoDomain *domain, gpointer func, gpointer arg, MonoError *error)
1059 return (NULL != mono_thread_create_internal (domain, func, arg, FALSE, 0, error));
1063 mono_thread_attach (MonoDomain *domain)
1065 MonoThread *thread = mono_thread_attach_full (domain, FALSE);
1071 mono_thread_attach_full (MonoDomain *domain, gboolean force_attach)
1073 MonoInternalThread *internal;
1075 MonoNativeThreadId tid;
1078 if (mono_thread_internal_current_is_attached ()) {
1079 if (domain != mono_domain_get ())
1080 mono_domain_set (domain, TRUE);
1081 /* Already attached */
1082 return mono_thread_current ();
1085 if (!mono_gc_register_thread (&domain)) {
1086 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 ());
1089 tid=mono_native_thread_id_get ();
1091 internal = create_internal_thread_object ();
1093 thread = create_thread_object (domain, internal);
1095 if (!mono_thread_attach_internal (thread, force_attach, TRUE, &stack_ptr)) {
1096 /* Mono is shutting down, so just wait for the end */
1098 mono_thread_info_sleep (10000, NULL);
1101 THREAD_DEBUG (g_message ("%s: Attached thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, internal->handle));
1103 if (mono_thread_attach_cb) {
1107 mono_thread_info_get_stack_bounds (&staddr, &stsize);
1110 mono_thread_attach_cb (MONO_NATIVE_THREAD_ID_TO_UINT (tid), &stack_ptr);
1112 mono_thread_attach_cb (MONO_NATIVE_THREAD_ID_TO_UINT (tid), staddr + stsize);
1115 /* Can happen when we attach the profiler helper thread in order to heapshot. */
1116 if (!mono_thread_info_current ()->tools_thread)
1117 // FIXME: Need a separate callback
1118 mono_profiler_thread_start (MONO_NATIVE_THREAD_ID_TO_UINT (tid));
1124 mono_thread_detach_internal (MonoInternalThread *thread)
1126 g_return_if_fail (thread != NULL);
1128 THREAD_DEBUG (g_message ("%s: mono_thread_detach for %p (%"G_GSIZE_FORMAT")", __func__, thread, (gsize)thread->tid));
1131 mono_w32mutex_abandon ();
1134 thread_cleanup (thread);
1136 SET_CURRENT_OBJECT (NULL);
1137 mono_domain_unset ();
1139 /* Don't need to close the handle to this thread, even though we took a
1140 * reference in mono_thread_attach (), because the GC will do it
1141 * when the Thread object is finalised.
1146 mono_thread_detach (MonoThread *thread)
1149 mono_thread_detach_internal (thread->internal_thread);
1153 * mono_thread_detach_if_exiting:
1155 * Detach the current thread from the runtime if it is exiting, i.e. it is running pthread dtors.
1156 * This should be used at the end of embedding code which calls into managed code, and which
1157 * can be called from pthread dtors, like dealloc: implementations in objective-c.
1160 mono_thread_detach_if_exiting (void)
1162 if (mono_thread_info_is_exiting ()) {
1163 MonoInternalThread *thread;
1165 thread = mono_thread_internal_current ();
1167 mono_thread_detach_internal (thread);
1168 mono_thread_info_detach ();
1176 mono_thread_internal_current_is_attached (void)
1178 MonoInternalThread *internal;
1180 internal = GET_CURRENT_OBJECT ();
1188 mono_thread_exit (void)
1190 MonoInternalThread *thread = mono_thread_internal_current ();
1192 THREAD_DEBUG (g_message ("%s: mono_thread_exit for %p (%"G_GSIZE_FORMAT")", __func__, thread, (gsize)thread->tid));
1194 mono_thread_detach_internal (thread);
1196 /* we could add a callback here for embedders to use. */
1197 if (mono_thread_get_main () && (thread == mono_thread_get_main ()->internal_thread))
1198 exit (mono_environment_exitcode_get ());
1200 mono_thread_info_exit (0);
1204 ves_icall_System_Threading_Thread_ConstructInternalThread (MonoThread *this_obj)
1206 MonoInternalThread *internal;
1208 internal = create_internal_thread_object ();
1210 internal->state = ThreadState_Unstarted;
1212 InterlockedCompareExchangePointer ((volatile gpointer *)&this_obj->internal_thread, internal, NULL);
1216 ves_icall_System_Threading_Thread_Thread_internal (MonoThread *this_obj,
1220 MonoInternalThread *internal;
1223 THREAD_DEBUG (g_message("%s: Trying to start a new thread: this (%p) start (%p)", __func__, this_obj, start));
1225 if (!this_obj->internal_thread)
1226 ves_icall_System_Threading_Thread_ConstructInternalThread (this_obj);
1227 internal = this_obj->internal_thread;
1229 LOCK_THREAD (internal);
1231 if ((internal->state & ThreadState_Unstarted) == 0) {
1232 UNLOCK_THREAD (internal);
1233 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has already been started."));
1237 if ((internal->state & ThreadState_Aborted) != 0) {
1238 UNLOCK_THREAD (internal);
1242 res = create_thread (this_obj, internal, start, NULL, NULL, FALSE, 0, &error);
1244 mono_error_cleanup (&error);
1245 UNLOCK_THREAD (internal);
1249 internal->state &= ~ThreadState_Unstarted;
1251 THREAD_DEBUG (g_message ("%s: Started thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread));
1253 UNLOCK_THREAD (internal);
1254 return internal->handle;
1258 * This is called from the finalizer of the internal thread object.
1261 ves_icall_System_Threading_InternalThread_Thread_free_internal (MonoInternalThread *this_obj)
1263 THREAD_DEBUG (g_message ("%s: Closing thread %p, handle %p", __func__, this, this_obj->handle));
1266 * Since threads keep a reference to their thread object while running, by the time this function is called,
1267 * the thread has already exited/detached, i.e. thread_cleanup () has ran. The exception is during shutdown,
1268 * when thread_cleanup () can be called after this.
1270 if (this_obj->handle) {
1271 mono_threads_close_thread_handle (this_obj->handle);
1272 this_obj->handle = NULL;
1276 CloseHandle (this_obj->native_handle);
1279 if (this_obj->synch_cs) {
1280 MonoCoopMutex *synch_cs = this_obj->synch_cs;
1281 this_obj->synch_cs = NULL;
1282 mono_coop_mutex_destroy (synch_cs);
1286 if (this_obj->name) {
1287 void *name = this_obj->name;
1288 this_obj->name = NULL;
1292 g_assert (this_obj->suspended);
1293 mono_os_event_destroy (this_obj->suspended);
1294 g_free (this_obj->suspended);
1295 this_obj->suspended = NULL;
1299 ves_icall_System_Threading_Thread_Sleep_internal(gint32 ms)
1302 MonoInternalThread *thread = mono_thread_internal_current ();
1304 THREAD_DEBUG (g_message ("%s: Sleeping for %d ms", __func__, ms));
1306 if (mono_thread_current_check_pending_interrupt ())
1310 gboolean alerted = FALSE;
1312 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1314 res = mono_thread_info_sleep (ms, &alerted);
1316 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1319 MonoException* exc = mono_thread_execute_interruption ();
1321 mono_raise_exception (exc);
1333 void ves_icall_System_Threading_Thread_SpinWait_nop (void)
1338 ves_icall_System_Threading_Thread_GetDomainID (void)
1340 return mono_domain_get()->domain_id;
1344 ves_icall_System_Threading_Thread_Yield (void)
1346 return mono_thread_info_yield ();
1350 * mono_thread_get_name:
1352 * Return the name of the thread. NAME_LEN is set to the length of the name.
1353 * Return NULL if the thread has no name. The returned memory is owned by the
1357 mono_thread_get_name (MonoInternalThread *this_obj, guint32 *name_len)
1361 LOCK_THREAD (this_obj);
1363 if (!this_obj->name) {
1367 *name_len = this_obj->name_len;
1368 res = g_new (gunichar2, this_obj->name_len);
1369 memcpy (res, this_obj->name, sizeof (gunichar2) * this_obj->name_len);
1372 UNLOCK_THREAD (this_obj);
1378 * mono_thread_get_name_utf8:
1380 * Return the name of the thread in UTF-8.
1381 * Return NULL if the thread has no name.
1382 * The returned memory is owned by the caller.
1385 mono_thread_get_name_utf8 (MonoThread *thread)
1390 MonoInternalThread *internal = thread->internal_thread;
1391 if (internal == NULL)
1394 LOCK_THREAD (internal);
1396 char *tname = g_utf16_to_utf8 (internal->name, internal->name_len, NULL, NULL, NULL);
1398 UNLOCK_THREAD (internal);
1404 * mono_thread_get_managed_id:
1406 * Return the Thread.ManagedThreadId value of `thread`.
1407 * Returns -1 if `thread` is NULL.
1410 mono_thread_get_managed_id (MonoThread *thread)
1415 MonoInternalThread *internal = thread->internal_thread;
1416 if (internal == NULL)
1419 int32_t id = internal->managed_id;
1425 ves_icall_System_Threading_Thread_GetName_internal (MonoInternalThread *this_obj)
1430 mono_error_init (&error);
1432 LOCK_THREAD (this_obj);
1434 if (!this_obj->name)
1437 str = mono_string_new_utf16_checked (mono_domain_get (), this_obj->name, this_obj->name_len, &error);
1439 UNLOCK_THREAD (this_obj);
1441 if (mono_error_set_pending_exception (&error))
1448 mono_thread_set_name_internal (MonoInternalThread *this_obj, MonoString *name, gboolean permanent, MonoError *error)
1450 LOCK_THREAD (this_obj);
1452 mono_error_init (error);
1454 if ((this_obj->flags & MONO_THREAD_FLAG_NAME_SET)) {
1455 UNLOCK_THREAD (this_obj);
1457 mono_error_set_invalid_operation (error, "Thread.Name can only be set once.");
1460 if (this_obj->name) {
1461 g_free (this_obj->name);
1462 this_obj->name_len = 0;
1465 this_obj->name = g_new (gunichar2, mono_string_length (name));
1466 memcpy (this_obj->name, mono_string_chars (name), mono_string_length (name) * 2);
1467 this_obj->name_len = mono_string_length (name);
1470 this_obj->flags |= MONO_THREAD_FLAG_NAME_SET;
1473 this_obj->name = NULL;
1476 UNLOCK_THREAD (this_obj);
1478 if (this_obj->name && this_obj->tid) {
1479 char *tname = mono_string_to_utf8_checked (name, error);
1480 return_if_nok (error);
1481 mono_profiler_thread_name (this_obj->tid, tname);
1482 mono_native_thread_set_name (thread_get_tid (this_obj), tname);
1488 ves_icall_System_Threading_Thread_SetName_internal (MonoInternalThread *this_obj, MonoString *name)
1491 mono_thread_set_name_internal (this_obj, name, TRUE, &error);
1492 mono_error_set_pending_exception (&error);
1496 * ves_icall_System_Threading_Thread_GetPriority_internal:
1497 * @param this_obj: The MonoInternalThread on which to operate.
1499 * Gets the priority of the given thread.
1500 * @return: The priority of the given thread.
1503 ves_icall_System_Threading_Thread_GetPriority (MonoThread *this_obj)
1506 MonoInternalThread *internal = this_obj->internal_thread;
1508 LOCK_THREAD (internal);
1509 priority = internal->priority;
1510 UNLOCK_THREAD (internal);
1516 * ves_icall_System_Threading_Thread_SetPriority_internal:
1517 * @param this_obj: The MonoInternalThread on which to operate.
1518 * @param priority: The priority to set.
1520 * Sets the priority of the given thread.
1523 ves_icall_System_Threading_Thread_SetPriority (MonoThread *this_obj, int priority)
1525 MonoInternalThread *internal = this_obj->internal_thread;
1527 LOCK_THREAD (internal);
1528 internal->priority = priority;
1529 if (internal->thread_info != NULL)
1530 mono_thread_internal_set_priority (internal, priority);
1531 UNLOCK_THREAD (internal);
1534 /* If the array is already in the requested domain, we just return it,
1535 otherwise we return a copy in that domain. */
1537 byte_array_to_domain (MonoArray *arr, MonoDomain *domain, MonoError *error)
1541 mono_error_init (error);
1545 if (mono_object_domain (arr) == domain)
1548 copy = mono_array_new_checked (domain, mono_defaults.byte_class, arr->max_length, error);
1549 memmove (mono_array_addr (copy, guint8, 0), mono_array_addr (arr, guint8, 0), arr->max_length);
1554 ves_icall_System_Threading_Thread_ByteArrayToRootDomain (MonoArray *arr)
1557 MonoArray *result = byte_array_to_domain (arr, mono_get_root_domain (), &error);
1558 mono_error_set_pending_exception (&error);
1563 ves_icall_System_Threading_Thread_ByteArrayToCurrentDomain (MonoArray *arr)
1566 MonoArray *result = byte_array_to_domain (arr, mono_domain_get (), &error);
1567 mono_error_set_pending_exception (&error);
1572 mono_thread_current (void)
1574 MonoDomain *domain = mono_domain_get ();
1575 MonoInternalThread *internal = mono_thread_internal_current ();
1576 MonoThread **current_thread_ptr;
1578 g_assert (internal);
1579 current_thread_ptr = get_current_thread_ptr_for_domain (domain, internal);
1581 if (!*current_thread_ptr) {
1582 g_assert (domain != mono_get_root_domain ());
1583 *current_thread_ptr = create_thread_object (domain, internal);
1585 return *current_thread_ptr;
1588 /* Return the thread object belonging to INTERNAL in the current domain */
1590 mono_thread_current_for_thread (MonoInternalThread *internal)
1592 MonoDomain *domain = mono_domain_get ();
1593 MonoThread **current_thread_ptr;
1595 g_assert (internal);
1596 current_thread_ptr = get_current_thread_ptr_for_domain (domain, internal);
1598 if (!*current_thread_ptr) {
1599 g_assert (domain != mono_get_root_domain ());
1600 *current_thread_ptr = create_thread_object (domain, internal);
1602 return *current_thread_ptr;
1606 mono_thread_internal_current (void)
1608 MonoInternalThread *res = GET_CURRENT_OBJECT ();
1609 THREAD_DEBUG (g_message ("%s: returning %p", __func__, res));
1614 ves_icall_System_Threading_Thread_Join_internal(MonoThread *this_obj, int ms)
1616 MonoInternalThread *thread = this_obj->internal_thread;
1617 MonoThreadHandle *handle = thread->handle;
1618 MonoInternalThread *cur_thread = mono_thread_internal_current ();
1621 if (mono_thread_current_check_pending_interrupt ())
1624 LOCK_THREAD (thread);
1626 if ((thread->state & ThreadState_Unstarted) != 0) {
1627 UNLOCK_THREAD (thread);
1629 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started."));
1633 UNLOCK_THREAD (thread);
1638 THREAD_DEBUG (g_message ("%s: joining thread handle %p, %d ms", __func__, handle, ms));
1640 mono_thread_set_state (cur_thread, ThreadState_WaitSleepJoin);
1643 ret=mono_thread_info_wait_one_handle (handle, ms, TRUE);
1646 mono_thread_clr_state (cur_thread, ThreadState_WaitSleepJoin);
1648 if(ret==MONO_THREAD_INFO_WAIT_RET_SUCCESS_0) {
1649 THREAD_DEBUG (g_message ("%s: join successful", __func__));
1654 THREAD_DEBUG (g_message ("%s: join failed", __func__));
1659 #define MANAGED_WAIT_FAILED 0x7fffffff
1662 map_native_wait_result_to_managed (gint32 val)
1664 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1665 return val == WAIT_FAILED ? MANAGED_WAIT_FAILED : val;
1669 mono_wait_uninterrupted (MonoInternalThread *thread, guint32 numhandles, gpointer *handles, gboolean waitall, gint32 ms, MonoError *error)
1677 mono_error_init (error);
1679 start = (ms == -1) ? 0 : mono_100ns_ticks ();
1682 if (numhandles != 1)
1683 ret = WaitForMultipleObjectsEx (numhandles, handles, waitall, wait, TRUE);
1685 ret = WaitForSingleObjectEx (handles [0], ms, TRUE);
1688 if (ret != WAIT_IO_COMPLETION)
1691 exc = mono_thread_execute_interruption ();
1693 mono_error_set_exception_instance (error, exc);
1700 /* Re-calculate ms according to the time passed */
1701 diff_ms = (gint32)((mono_100ns_ticks () - start) / 10000);
1702 if (diff_ms >= ms) {
1706 wait = ms - diff_ms;
1712 gint32 ves_icall_System_Threading_WaitHandle_WaitAll_internal(MonoArray *mono_handles, gint32 ms)
1719 MonoObject *waitHandle;
1720 MonoInternalThread *thread = mono_thread_internal_current ();
1722 /* Do this WaitSleepJoin check before creating objects */
1723 if (mono_thread_current_check_pending_interrupt ())
1724 return map_native_wait_result_to_managed (WAIT_FAILED);
1726 /* We fail in managed if the array has more than 64 elements */
1727 numhandles = (guint32)mono_array_length(mono_handles);
1728 handles = g_new0(HANDLE, numhandles);
1730 for(i = 0; i < numhandles; i++) {
1731 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
1732 handles [i] = mono_wait_handle_get_handle ((MonoWaitHandle *) waitHandle);
1739 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1741 ret = mono_wait_uninterrupted (thread, numhandles, handles, TRUE, ms, &error);
1743 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1747 mono_error_set_pending_exception (&error);
1749 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1750 return map_native_wait_result_to_managed (ret);
1753 gint32 ves_icall_System_Threading_WaitHandle_WaitAny_internal(MonoArray *mono_handles, gint32 ms)
1756 HANDLE handles [MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
1757 uintptr_t numhandles;
1760 MonoObject *waitHandle;
1761 MonoInternalThread *thread = mono_thread_internal_current ();
1763 /* Do this WaitSleepJoin check before creating objects */
1764 if (mono_thread_current_check_pending_interrupt ())
1765 return map_native_wait_result_to_managed (WAIT_FAILED);
1767 numhandles = mono_array_length(mono_handles);
1768 if (numhandles > MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS)
1769 return map_native_wait_result_to_managed (WAIT_FAILED);
1771 for(i = 0; i < numhandles; i++) {
1772 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
1773 handles [i] = mono_wait_handle_get_handle ((MonoWaitHandle *) waitHandle);
1780 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1782 ret = mono_wait_uninterrupted (thread, numhandles, handles, FALSE, ms, &error);
1784 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1786 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") returning %d", __func__, mono_native_thread_id_get (), ret));
1788 mono_error_set_pending_exception (&error);
1790 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1791 return map_native_wait_result_to_managed (ret);
1794 gint32 ves_icall_System_Threading_WaitHandle_WaitOne_internal(HANDLE handle, gint32 ms)
1798 MonoInternalThread *thread = mono_thread_internal_current ();
1800 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") waiting for %p, %d ms", __func__, mono_native_thread_id_get (), handle, ms));
1806 if (mono_thread_current_check_pending_interrupt ())
1807 return map_native_wait_result_to_managed (WAIT_FAILED);
1809 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1811 ret = mono_wait_uninterrupted (thread, 1, &handle, FALSE, ms, &error);
1813 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1815 mono_error_set_pending_exception (&error);
1816 return map_native_wait_result_to_managed (ret);
1820 ves_icall_System_Threading_WaitHandle_SignalAndWait_Internal (HANDLE toSignal, HANDLE toWait, gint32 ms)
1823 MonoInternalThread *thread = mono_thread_internal_current ();
1828 if (mono_thread_current_check_pending_interrupt ())
1829 return map_native_wait_result_to_managed (WAIT_FAILED);
1831 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1834 ret = SignalObjectAndWait (toSignal, toWait, ms, TRUE);
1837 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1839 return map_native_wait_result_to_managed (ret);
1842 gint32 ves_icall_System_Threading_Interlocked_Increment_Int (gint32 *location)
1844 return InterlockedIncrement (location);
1847 gint64 ves_icall_System_Threading_Interlocked_Increment_Long (gint64 *location)
1849 #if SIZEOF_VOID_P == 4
1850 if (G_UNLIKELY ((size_t)location & 0x7)) {
1852 mono_interlocked_lock ();
1855 mono_interlocked_unlock ();
1859 return InterlockedIncrement64 (location);
1862 gint32 ves_icall_System_Threading_Interlocked_Decrement_Int (gint32 *location)
1864 return InterlockedDecrement(location);
1867 gint64 ves_icall_System_Threading_Interlocked_Decrement_Long (gint64 * location)
1869 #if SIZEOF_VOID_P == 4
1870 if (G_UNLIKELY ((size_t)location & 0x7)) {
1872 mono_interlocked_lock ();
1875 mono_interlocked_unlock ();
1879 return InterlockedDecrement64 (location);
1882 gint32 ves_icall_System_Threading_Interlocked_Exchange_Int (gint32 *location, gint32 value)
1884 return InterlockedExchange(location, value);
1887 MonoObject * ves_icall_System_Threading_Interlocked_Exchange_Object (MonoObject **location, MonoObject *value)
1890 res = (MonoObject *) InterlockedExchangePointer((gpointer *) location, value);
1891 mono_gc_wbarrier_generic_nostore (location);
1895 gpointer ves_icall_System_Threading_Interlocked_Exchange_IntPtr (gpointer *location, gpointer value)
1897 return InterlockedExchangePointer(location, value);
1900 gfloat ves_icall_System_Threading_Interlocked_Exchange_Single (gfloat *location, gfloat value)
1902 IntFloatUnion val, ret;
1905 ret.ival = InterlockedExchange((gint32 *) location, val.ival);
1911 ves_icall_System_Threading_Interlocked_Exchange_Long (gint64 *location, gint64 value)
1913 #if SIZEOF_VOID_P == 4
1914 if (G_UNLIKELY ((size_t)location & 0x7)) {
1916 mono_interlocked_lock ();
1919 mono_interlocked_unlock ();
1923 return InterlockedExchange64 (location, value);
1927 ves_icall_System_Threading_Interlocked_Exchange_Double (gdouble *location, gdouble value)
1929 LongDoubleUnion val, ret;
1932 ret.ival = (gint64)InterlockedExchange64((gint64 *) location, val.ival);
1937 gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int(gint32 *location, gint32 value, gint32 comparand)
1939 return InterlockedCompareExchange(location, value, comparand);
1942 gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int_Success(gint32 *location, gint32 value, gint32 comparand, MonoBoolean *success)
1944 gint32 r = InterlockedCompareExchange(location, value, comparand);
1945 *success = r == comparand;
1949 MonoObject * ves_icall_System_Threading_Interlocked_CompareExchange_Object (MonoObject **location, MonoObject *value, MonoObject *comparand)
1952 res = (MonoObject *) InterlockedCompareExchangePointer((gpointer *) location, value, comparand);
1953 mono_gc_wbarrier_generic_nostore (location);
1957 gpointer ves_icall_System_Threading_Interlocked_CompareExchange_IntPtr(gpointer *location, gpointer value, gpointer comparand)
1959 return InterlockedCompareExchangePointer(location, value, comparand);
1962 gfloat ves_icall_System_Threading_Interlocked_CompareExchange_Single (gfloat *location, gfloat value, gfloat comparand)
1964 IntFloatUnion val, ret, cmp;
1967 cmp.fval = comparand;
1968 ret.ival = InterlockedCompareExchange((gint32 *) location, val.ival, cmp.ival);
1974 ves_icall_System_Threading_Interlocked_CompareExchange_Double (gdouble *location, gdouble value, gdouble comparand)
1976 #if SIZEOF_VOID_P == 8
1977 LongDoubleUnion val, comp, ret;
1980 comp.fval = comparand;
1981 ret.ival = (gint64)InterlockedCompareExchangePointer((gpointer *) location, (gpointer)val.ival, (gpointer)comp.ival);
1987 mono_interlocked_lock ();
1989 if (old == comparand)
1991 mono_interlocked_unlock ();
1998 ves_icall_System_Threading_Interlocked_CompareExchange_Long (gint64 *location, gint64 value, gint64 comparand)
2000 #if SIZEOF_VOID_P == 4
2001 if (G_UNLIKELY ((size_t)location & 0x7)) {
2003 mono_interlocked_lock ();
2005 if (old == comparand)
2007 mono_interlocked_unlock ();
2011 return InterlockedCompareExchange64 (location, value, comparand);
2015 ves_icall_System_Threading_Interlocked_CompareExchange_T (MonoObject **location, MonoObject *value, MonoObject *comparand)
2018 res = (MonoObject *)InterlockedCompareExchangePointer ((volatile gpointer *)location, value, comparand);
2019 mono_gc_wbarrier_generic_nostore (location);
2024 ves_icall_System_Threading_Interlocked_Exchange_T (MonoObject **location, MonoObject *value)
2027 MONO_CHECK_NULL (location, NULL);
2028 res = (MonoObject *)InterlockedExchangePointer ((volatile gpointer *)location, value);
2029 mono_gc_wbarrier_generic_nostore (location);
2034 ves_icall_System_Threading_Interlocked_Add_Int (gint32 *location, gint32 value)
2036 return InterlockedAdd (location, value);
2040 ves_icall_System_Threading_Interlocked_Add_Long (gint64 *location, gint64 value)
2042 #if SIZEOF_VOID_P == 4
2043 if (G_UNLIKELY ((size_t)location & 0x7)) {
2045 mono_interlocked_lock ();
2048 mono_interlocked_unlock ();
2052 return InterlockedAdd64 (location, value);
2056 ves_icall_System_Threading_Interlocked_Read_Long (gint64 *location)
2058 #if SIZEOF_VOID_P == 4
2059 if (G_UNLIKELY ((size_t)location & 0x7)) {
2061 mono_interlocked_lock ();
2063 mono_interlocked_unlock ();
2067 return InterlockedRead64 (location);
2071 ves_icall_System_Threading_Thread_MemoryBarrier (void)
2073 mono_memory_barrier ();
2077 ves_icall_System_Threading_Thread_ClrState (MonoInternalThread* this_obj, guint32 state)
2079 mono_thread_clr_state (this_obj, (MonoThreadState)state);
2081 if (state & ThreadState_Background) {
2082 /* If the thread changes the background mode, the main thread has to
2083 * be notified, since it has to rebuild the list of threads to
2086 mono_os_event_set (&background_change_event);
2091 ves_icall_System_Threading_Thread_SetState (MonoInternalThread* this_obj, guint32 state)
2093 mono_thread_set_state (this_obj, (MonoThreadState)state);
2095 if (state & ThreadState_Background) {
2096 /* If the thread changes the background mode, the main thread has to
2097 * be notified, since it has to rebuild the list of threads to
2100 mono_os_event_set (&background_change_event);
2105 ves_icall_System_Threading_Thread_GetState (MonoInternalThread* this_obj)
2109 LOCK_THREAD (this_obj);
2111 state = this_obj->state;
2113 UNLOCK_THREAD (this_obj);
2118 void ves_icall_System_Threading_Thread_Interrupt_internal (MonoThread *this_obj)
2120 MonoInternalThread *current;
2122 MonoInternalThread *thread = this_obj->internal_thread;
2124 LOCK_THREAD (thread);
2126 current = mono_thread_internal_current ();
2128 thread->thread_interrupt_requested = TRUE;
2129 throw_ = current != thread && (thread->state & ThreadState_WaitSleepJoin);
2131 UNLOCK_THREAD (thread);
2134 async_abort_internal (thread, FALSE);
2139 * mono_thread_current_check_pending_interrupt:
2141 * Checks if there's a interruption request and set the pending exception if so.
2143 * @returns true if a pending exception was set
2146 mono_thread_current_check_pending_interrupt (void)
2148 MonoInternalThread *thread = mono_thread_internal_current ();
2149 gboolean throw_ = FALSE;
2151 LOCK_THREAD (thread);
2153 if (thread->thread_interrupt_requested) {
2155 thread->thread_interrupt_requested = FALSE;
2158 UNLOCK_THREAD (thread);
2161 mono_set_pending_exception (mono_get_exception_thread_interrupted ());
2166 request_thread_abort (MonoInternalThread *thread, MonoObject *state)
2168 LOCK_THREAD (thread);
2170 if ((thread->state & ThreadState_AbortRequested) != 0 ||
2171 (thread->state & ThreadState_StopRequested) != 0 ||
2172 (thread->state & ThreadState_Stopped) != 0)
2174 UNLOCK_THREAD (thread);
2178 if ((thread->state & ThreadState_Unstarted) != 0) {
2179 thread->state |= ThreadState_Aborted;
2180 UNLOCK_THREAD (thread);
2184 thread->state |= ThreadState_AbortRequested;
2185 if (thread->abort_state_handle)
2186 mono_gchandle_free (thread->abort_state_handle);
2188 thread->abort_state_handle = mono_gchandle_new (state, FALSE);
2189 g_assert (thread->abort_state_handle);
2191 thread->abort_state_handle = 0;
2193 thread->abort_exc = NULL;
2195 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));
2197 /* During shutdown, we can't wait for other threads */
2199 /* Make sure the thread is awake */
2200 mono_thread_resume (thread);
2202 UNLOCK_THREAD (thread);
2207 ves_icall_System_Threading_Thread_Abort (MonoInternalThread *thread, MonoObject *state)
2209 if (!request_thread_abort (thread, state))
2212 if (thread == mono_thread_internal_current ()) {
2214 self_abort_internal (&error);
2215 mono_error_set_pending_exception (&error);
2217 async_abort_internal (thread, TRUE);
2222 * mono_thread_internal_abort:
2224 * Request thread @thread to be aborted.
2226 * @thread MUST NOT be the current thread.
2229 mono_thread_internal_abort (MonoInternalThread *thread)
2231 g_assert (thread != mono_thread_internal_current ());
2233 if (!request_thread_abort (thread, NULL))
2235 async_abort_internal (thread, TRUE);
2239 ves_icall_System_Threading_Thread_ResetAbort (MonoThread *this_obj)
2241 MonoInternalThread *thread = mono_thread_internal_current ();
2242 gboolean was_aborting;
2244 LOCK_THREAD (thread);
2245 was_aborting = thread->state & ThreadState_AbortRequested;
2246 thread->state &= ~ThreadState_AbortRequested;
2247 UNLOCK_THREAD (thread);
2249 if (!was_aborting) {
2250 const char *msg = "Unable to reset abort because no abort was requested";
2251 mono_set_pending_exception (mono_get_exception_thread_state (msg));
2254 thread->abort_exc = NULL;
2255 if (thread->abort_state_handle) {
2256 mono_gchandle_free (thread->abort_state_handle);
2257 /* This is actually not necessary - the handle
2258 only counts if the exception is set */
2259 thread->abort_state_handle = 0;
2264 mono_thread_internal_reset_abort (MonoInternalThread *thread)
2266 LOCK_THREAD (thread);
2268 thread->state &= ~ThreadState_AbortRequested;
2270 if (thread->abort_exc) {
2271 thread->abort_exc = NULL;
2272 if (thread->abort_state_handle) {
2273 mono_gchandle_free (thread->abort_state_handle);
2274 /* This is actually not necessary - the handle
2275 only counts if the exception is set */
2276 thread->abort_state_handle = 0;
2280 UNLOCK_THREAD (thread);
2284 ves_icall_System_Threading_Thread_GetAbortExceptionState (MonoThread *this_obj)
2287 MonoInternalThread *thread = this_obj->internal_thread;
2288 MonoObject *state, *deserialized = NULL;
2291 if (!thread->abort_state_handle)
2294 state = mono_gchandle_get_target (thread->abort_state_handle);
2297 domain = mono_domain_get ();
2298 if (mono_object_domain (state) == domain)
2301 deserialized = mono_object_xdomain_representation (state, domain, &error);
2303 if (!deserialized) {
2304 MonoException *invalid_op_exc = mono_get_exception_invalid_operation ("Thread.ExceptionState cannot access an ExceptionState from a different AppDomain");
2305 if (!is_ok (&error)) {
2306 MonoObject *exc = (MonoObject*)mono_error_convert_to_exception (&error);
2307 MONO_OBJECT_SETREF (invalid_op_exc, inner_ex, exc);
2309 mono_set_pending_exception (invalid_op_exc);
2313 return deserialized;
2317 mono_thread_suspend (MonoInternalThread *thread)
2319 LOCK_THREAD (thread);
2321 if ((thread->state & ThreadState_Unstarted) != 0 ||
2322 (thread->state & ThreadState_Aborted) != 0 ||
2323 (thread->state & ThreadState_Stopped) != 0)
2325 UNLOCK_THREAD (thread);
2329 if ((thread->state & ThreadState_Suspended) != 0 ||
2330 (thread->state & ThreadState_SuspendRequested) != 0 ||
2331 (thread->state & ThreadState_StopRequested) != 0)
2333 UNLOCK_THREAD (thread);
2337 thread->state |= ThreadState_SuspendRequested;
2338 if (mono_threads_is_coop_enabled ())
2339 mono_os_event_reset (thread->suspended);
2341 if (thread == mono_thread_internal_current ()) {
2342 /* calls UNLOCK_THREAD (thread) */
2343 self_suspend_internal ();
2345 /* calls UNLOCK_THREAD (thread) */
2346 async_suspend_internal (thread, FALSE);
2353 ves_icall_System_Threading_Thread_Suspend (MonoThread *this_obj)
2355 if (!mono_thread_suspend (this_obj->internal_thread)) {
2356 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2361 /* LOCKING: LOCK_THREAD(thread) must be held */
2363 mono_thread_resume (MonoInternalThread *thread)
2365 if ((thread->state & ThreadState_SuspendRequested) != 0) {
2366 // MOSTLY_ASYNC_SAFE_PRINTF ("RESUME (1) thread %p\n", thread_get_tid (thread));
2367 if (mono_threads_is_coop_enabled ())
2368 mono_os_event_set (thread->suspended);
2369 thread->state &= ~ThreadState_SuspendRequested;
2373 if ((thread->state & ThreadState_Suspended) == 0 ||
2374 (thread->state & ThreadState_Unstarted) != 0 ||
2375 (thread->state & ThreadState_Aborted) != 0 ||
2376 (thread->state & ThreadState_Stopped) != 0)
2378 // MOSTLY_ASYNC_SAFE_PRINTF ("RESUME (2) thread %p\n", thread_get_tid (thread));
2382 // MOSTLY_ASYNC_SAFE_PRINTF ("RESUME (3) thread %p\n", thread_get_tid (thread));
2384 if (mono_threads_is_coop_enabled ()) {
2385 mono_os_event_set (thread->suspended);
2387 UNLOCK_THREAD (thread);
2389 /* Awake the thread */
2390 if (!mono_thread_info_resume (thread_get_tid (thread)))
2393 LOCK_THREAD (thread);
2396 thread->state &= ~ThreadState_Suspended;
2402 ves_icall_System_Threading_Thread_Resume (MonoThread *thread)
2404 if (!thread->internal_thread) {
2405 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2407 LOCK_THREAD (thread->internal_thread);
2408 if (!mono_thread_resume (thread->internal_thread))
2409 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2410 UNLOCK_THREAD (thread->internal_thread);
2415 mono_threads_is_critical_method (MonoMethod *method)
2417 switch (method->wrapper_type) {
2418 case MONO_WRAPPER_RUNTIME_INVOKE:
2419 case MONO_WRAPPER_XDOMAIN_INVOKE:
2420 case MONO_WRAPPER_XDOMAIN_DISPATCH:
2427 find_wrapper (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
2432 if (mono_threads_is_critical_method (m)) {
2433 *((gboolean*)data) = TRUE;
2440 is_running_protected_wrapper (void)
2442 gboolean found = FALSE;
2443 mono_stack_walk (find_wrapper, &found);
2448 request_thread_stop (MonoInternalThread *thread)
2450 LOCK_THREAD (thread);
2452 if ((thread->state & ThreadState_StopRequested) != 0 ||
2453 (thread->state & ThreadState_Stopped) != 0)
2455 UNLOCK_THREAD (thread);
2459 /* Make sure the thread is awake */
2460 mono_thread_resume (thread);
2462 thread->state |= ThreadState_StopRequested;
2463 thread->state &= ~ThreadState_AbortRequested;
2465 UNLOCK_THREAD (thread);
2470 * mono_thread_internal_stop:
2472 * Request thread @thread to stop.
2474 * @thread MUST NOT be the current thread.
2477 mono_thread_internal_stop (MonoInternalThread *thread)
2479 g_assert (thread != mono_thread_internal_current ());
2481 if (!request_thread_stop (thread))
2484 async_abort_internal (thread, TRUE);
2487 void mono_thread_stop (MonoThread *thread)
2489 MonoInternalThread *internal = thread->internal_thread;
2491 if (!request_thread_stop (internal))
2494 if (internal == mono_thread_internal_current ()) {
2496 self_abort_internal (&error);
2498 This function is part of the embeding API and has no way to return the exception
2499 to be thrown. So what we do is keep the old behavior and raise the exception.
2501 mono_error_raise_exception (&error); /* OK to throw, see note */
2503 async_abort_internal (internal, TRUE);
2508 ves_icall_System_Threading_Thread_VolatileRead1 (void *ptr)
2510 gint8 tmp = *(volatile gint8 *)ptr;
2511 mono_memory_barrier ();
2516 ves_icall_System_Threading_Thread_VolatileRead2 (void *ptr)
2518 gint16 tmp = *(volatile gint16 *)ptr;
2519 mono_memory_barrier ();
2524 ves_icall_System_Threading_Thread_VolatileRead4 (void *ptr)
2526 gint32 tmp = *(volatile gint32 *)ptr;
2527 mono_memory_barrier ();
2532 ves_icall_System_Threading_Thread_VolatileRead8 (void *ptr)
2534 gint64 tmp = *(volatile gint64 *)ptr;
2535 mono_memory_barrier ();
2540 ves_icall_System_Threading_Thread_VolatileReadIntPtr (void *ptr)
2542 volatile void *tmp = *(volatile void **)ptr;
2543 mono_memory_barrier ();
2544 return (void *) tmp;
2548 ves_icall_System_Threading_Thread_VolatileReadObject (void *ptr)
2550 volatile MonoObject *tmp = *(volatile MonoObject **)ptr;
2551 mono_memory_barrier ();
2552 return (MonoObject *) tmp;
2556 ves_icall_System_Threading_Thread_VolatileReadDouble (void *ptr)
2558 double tmp = *(volatile double *)ptr;
2559 mono_memory_barrier ();
2564 ves_icall_System_Threading_Thread_VolatileReadFloat (void *ptr)
2566 float tmp = *(volatile float *)ptr;
2567 mono_memory_barrier ();
2572 ves_icall_System_Threading_Volatile_Read1 (void *ptr)
2574 return InterlockedRead8 ((volatile gint8 *)ptr);
2578 ves_icall_System_Threading_Volatile_Read2 (void *ptr)
2580 return InterlockedRead16 ((volatile gint16 *)ptr);
2584 ves_icall_System_Threading_Volatile_Read4 (void *ptr)
2586 return InterlockedRead ((volatile gint32 *)ptr);
2590 ves_icall_System_Threading_Volatile_Read8 (void *ptr)
2592 #if SIZEOF_VOID_P == 4
2593 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2595 mono_interlocked_lock ();
2596 val = *(gint64*)ptr;
2597 mono_interlocked_unlock ();
2601 return InterlockedRead64 ((volatile gint64 *)ptr);
2605 ves_icall_System_Threading_Volatile_ReadIntPtr (void *ptr)
2607 return InterlockedReadPointer ((volatile gpointer *)ptr);
2611 ves_icall_System_Threading_Volatile_ReadDouble (void *ptr)
2615 #if SIZEOF_VOID_P == 4
2616 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2618 mono_interlocked_lock ();
2619 val = *(double*)ptr;
2620 mono_interlocked_unlock ();
2625 u.ival = InterlockedRead64 ((volatile gint64 *)ptr);
2631 ves_icall_System_Threading_Volatile_ReadFloat (void *ptr)
2635 u.ival = InterlockedRead ((volatile gint32 *)ptr);
2641 ves_icall_System_Threading_Volatile_Read_T (void *ptr)
2643 return (MonoObject *)InterlockedReadPointer ((volatile gpointer *)ptr);
2647 ves_icall_System_Threading_Thread_VolatileWrite1 (void *ptr, gint8 value)
2649 mono_memory_barrier ();
2650 *(volatile gint8 *)ptr = value;
2654 ves_icall_System_Threading_Thread_VolatileWrite2 (void *ptr, gint16 value)
2656 mono_memory_barrier ();
2657 *(volatile gint16 *)ptr = value;
2661 ves_icall_System_Threading_Thread_VolatileWrite4 (void *ptr, gint32 value)
2663 mono_memory_barrier ();
2664 *(volatile gint32 *)ptr = value;
2668 ves_icall_System_Threading_Thread_VolatileWrite8 (void *ptr, gint64 value)
2670 mono_memory_barrier ();
2671 *(volatile gint64 *)ptr = value;
2675 ves_icall_System_Threading_Thread_VolatileWriteIntPtr (void *ptr, void *value)
2677 mono_memory_barrier ();
2678 *(volatile void **)ptr = value;
2682 ves_icall_System_Threading_Thread_VolatileWriteObject (void *ptr, MonoObject *value)
2684 mono_memory_barrier ();
2685 mono_gc_wbarrier_generic_store (ptr, value);
2689 ves_icall_System_Threading_Thread_VolatileWriteDouble (void *ptr, double value)
2691 mono_memory_barrier ();
2692 *(volatile double *)ptr = value;
2696 ves_icall_System_Threading_Thread_VolatileWriteFloat (void *ptr, float value)
2698 mono_memory_barrier ();
2699 *(volatile float *)ptr = value;
2703 ves_icall_System_Threading_Volatile_Write1 (void *ptr, gint8 value)
2705 InterlockedWrite8 ((volatile gint8 *)ptr, value);
2709 ves_icall_System_Threading_Volatile_Write2 (void *ptr, gint16 value)
2711 InterlockedWrite16 ((volatile gint16 *)ptr, value);
2715 ves_icall_System_Threading_Volatile_Write4 (void *ptr, gint32 value)
2717 InterlockedWrite ((volatile gint32 *)ptr, value);
2721 ves_icall_System_Threading_Volatile_Write8 (void *ptr, gint64 value)
2723 #if SIZEOF_VOID_P == 4
2724 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2725 mono_interlocked_lock ();
2726 *(gint64*)ptr = value;
2727 mono_interlocked_unlock ();
2732 InterlockedWrite64 ((volatile gint64 *)ptr, value);
2736 ves_icall_System_Threading_Volatile_WriteIntPtr (void *ptr, void *value)
2738 InterlockedWritePointer ((volatile gpointer *)ptr, value);
2742 ves_icall_System_Threading_Volatile_WriteDouble (void *ptr, double value)
2746 #if SIZEOF_VOID_P == 4
2747 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2748 mono_interlocked_lock ();
2749 *(double*)ptr = value;
2750 mono_interlocked_unlock ();
2757 InterlockedWrite64 ((volatile gint64 *)ptr, u.ival);
2761 ves_icall_System_Threading_Volatile_WriteFloat (void *ptr, float value)
2767 InterlockedWrite ((volatile gint32 *)ptr, u.ival);
2771 ves_icall_System_Threading_Volatile_Write_T (void *ptr, MonoObject *value)
2773 mono_gc_wbarrier_generic_store_atomic (ptr, value);
2777 free_context (void *user_data)
2779 ContextStaticData *data = user_data;
2781 mono_threads_lock ();
2784 * There is no guarantee that, by the point this reference queue callback
2785 * has been invoked, the GC handle associated with the object will fail to
2786 * resolve as one might expect. So if we don't free and remove the GC
2787 * handle here, free_context_static_data_helper () could end up resolving
2788 * a GC handle to an actually-dead context which would contain a pointer
2789 * to an already-freed static data segment, resulting in a crash when
2792 g_hash_table_remove (contexts, GUINT_TO_POINTER (data->gc_handle));
2794 mono_threads_unlock ();
2796 mono_gchandle_free (data->gc_handle);
2797 mono_free_static_data (data->static_data);
2802 ves_icall_System_Runtime_Remoting_Contexts_Context_RegisterContext (MonoAppContext *ctx)
2804 mono_threads_lock ();
2806 //g_print ("Registering context %d in domain %d\n", ctx->context_id, ctx->domain_id);
2809 contexts = g_hash_table_new (NULL, NULL);
2812 context_queue = mono_gc_reference_queue_new (free_context);
2814 gpointer gch = GUINT_TO_POINTER (mono_gchandle_new_weakref (&ctx->obj, FALSE));
2815 g_hash_table_insert (contexts, gch, gch);
2818 * We use this intermediate structure to contain a duplicate pointer to
2819 * the static data because we can't rely on being able to resolve the GC
2820 * handle in the reference queue callback.
2822 ContextStaticData *data = g_new0 (ContextStaticData, 1);
2823 data->gc_handle = GPOINTER_TO_UINT (gch);
2826 context_adjust_static_data (ctx);
2827 mono_gc_reference_queue_add (context_queue, &ctx->obj, data);
2829 mono_threads_unlock ();
2831 mono_profiler_context_loaded (ctx);
2835 ves_icall_System_Runtime_Remoting_Contexts_Context_ReleaseContext (MonoAppContext *ctx)
2838 * NOTE: Since finalizers are unreliable for the purposes of ensuring
2839 * cleanup in exceptional circumstances, we don't actually do any
2840 * cleanup work here. We instead do this via a reference queue.
2843 //g_print ("Releasing context %d in domain %d\n", ctx->context_id, ctx->domain_id);
2845 mono_profiler_context_unloaded (ctx);
2849 mono_thread_init_tls (void)
2851 MONO_FAST_TLS_INIT (tls_current_object);
2852 mono_native_tls_alloc (¤t_object_key, NULL);
2855 void mono_thread_init (MonoThreadStartCB start_cb,
2856 MonoThreadAttachCB attach_cb)
2858 mono_coop_mutex_init_recursive (&threads_mutex);
2860 mono_os_mutex_init_recursive(&interlocked_mutex);
2861 mono_os_mutex_init_recursive(&joinable_threads_mutex);
2863 mono_os_event_init (&background_change_event, FALSE);
2865 mono_init_static_data_info (&thread_static_info);
2866 mono_init_static_data_info (&context_static_info);
2868 THREAD_DEBUG (g_message ("%s: Allocated current_object_key %d", __func__, current_object_key));
2870 mono_thread_start_cb = start_cb;
2871 mono_thread_attach_cb = attach_cb;
2874 void mono_thread_cleanup (void)
2876 #if !defined(RUN_IN_SUBTHREAD) && !defined(HOST_WIN32)
2877 /* The main thread must abandon any held mutexes (particularly
2878 * important for named mutexes as they are shared across
2879 * processes, see bug 74680.) This will happen when the
2880 * thread exits, but if it's not running in a subthread it
2881 * won't exit in time.
2883 mono_w32mutex_abandon ();
2887 /* This stuff needs more testing, it seems one of these
2888 * critical sections can be locked when mono_thread_cleanup is
2891 mono_coop_mutex_destroy (&threads_mutex);
2892 mono_os_mutex_destroy (&interlocked_mutex);
2893 mono_os_mutex_destroy (&delayed_free_table_mutex);
2894 mono_os_mutex_destroy (&small_id_mutex);
2895 mono_os_event_destroy (&background_change_event);
2898 mono_native_tls_free (current_object_key);
2902 mono_threads_install_cleanup (MonoThreadCleanupFunc func)
2904 mono_thread_cleanup_fn = func;
2908 mono_thread_set_manage_callback (MonoThread *thread, MonoThreadManageCallback func)
2910 thread->internal_thread->manage_callback = func;
2914 static void print_tids (gpointer key, gpointer value, gpointer user)
2916 /* GPOINTER_TO_UINT breaks horribly if sizeof(void *) >
2917 * sizeof(uint) and a cast to uint would overflow
2919 /* Older versions of glib don't have G_GSIZE_FORMAT, so just
2920 * print this as a pointer.
2922 g_message ("Waiting for: %p", key);
2927 MonoThreadHandle *handles[MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
2928 MonoInternalThread *threads[MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
2933 wait_for_tids (struct wait_data *wait, guint32 timeout, gboolean check_state_change)
2936 MonoThreadInfoWaitRet ret;
2938 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
2940 /* Add the thread state change event, so it wakes
2941 * up if a thread changes to background mode. */
2944 if (check_state_change)
2945 ret = mono_thread_info_wait_multiple_handle (wait->handles, wait->num, &background_change_event, FALSE, timeout, TRUE);
2947 ret = mono_thread_info_wait_multiple_handle (wait->handles, wait->num, NULL, TRUE, timeout, TRUE);
2950 if (ret == MONO_THREAD_INFO_WAIT_RET_FAILED) {
2951 /* See the comment in build_wait_tids() */
2952 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
2956 for( i = 0; i < wait->num; i++)
2957 mono_threads_close_thread_handle (wait->handles [i]);
2959 if (ret == MONO_THREAD_INFO_WAIT_RET_TIMEOUT)
2962 if (ret < wait->num) {
2963 MonoInternalThread *internal;
2965 internal = wait->threads [ret];
2967 mono_threads_lock ();
2968 if (mono_g_hash_table_lookup (threads, (gpointer) internal->tid) == internal)
2969 g_error ("%s: failed to call mono_thread_detach_internal on thread %p, InternalThread: %p", __func__, internal->tid, internal);
2970 mono_threads_unlock ();
2974 static void build_wait_tids (gpointer key, gpointer value, gpointer user)
2976 struct wait_data *wait=(struct wait_data *)user;
2978 if(wait->num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS - 1) {
2979 MonoInternalThread *thread=(MonoInternalThread *)value;
2981 /* Ignore background threads, we abort them later */
2982 /* Do not lock here since it is not needed and the caller holds threads_lock */
2983 if (thread->state & ThreadState_Background) {
2984 THREAD_DEBUG (g_message ("%s: ignoring background thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
2985 return; /* just leave, ignore */
2988 if (mono_gc_is_finalizer_internal_thread (thread)) {
2989 THREAD_DEBUG (g_message ("%s: ignoring finalizer thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
2993 if (thread == mono_thread_internal_current ()) {
2994 THREAD_DEBUG (g_message ("%s: ignoring current thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
2998 if (mono_thread_get_main () && (thread == mono_thread_get_main ()->internal_thread)) {
2999 THREAD_DEBUG (g_message ("%s: ignoring main thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3003 if (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE) {
3004 THREAD_DEBUG (g_message ("%s: ignoring thread %" G_GSIZE_FORMAT "with DONT_MANAGE flag set.", __func__, (gsize)thread->tid));
3008 THREAD_DEBUG (g_message ("%s: Invoking mono_thread_manage callback on thread %p", __func__, thread));
3009 if ((thread->manage_callback == NULL) || (thread->manage_callback (thread->root_domain_thread) == TRUE)) {
3010 wait->handles[wait->num]=mono_threads_open_thread_handle (thread->handle);
3011 wait->threads[wait->num]=thread;
3014 THREAD_DEBUG (g_message ("%s: adding thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3016 THREAD_DEBUG (g_message ("%s: ignoring (because of callback) thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3021 /* Just ignore the rest, we can't do anything with
3028 remove_and_abort_threads (gpointer key, gpointer value, gpointer user)
3030 struct wait_data *wait=(struct wait_data *)user;
3031 MonoNativeThreadId self = mono_native_thread_id_get ();
3032 MonoInternalThread *thread = (MonoInternalThread *)value;
3034 if (wait->num >= MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS)
3037 /* The finalizer thread is not a background thread */
3038 if (!mono_native_thread_id_equals (thread_get_tid (thread), self)
3039 && (thread->state & ThreadState_Background) != 0
3040 && (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE) == 0
3042 wait->handles[wait->num] = mono_threads_open_thread_handle (thread->handle);
3043 wait->threads[wait->num] = thread;
3046 THREAD_DEBUG (g_print ("%s: Aborting id: %"G_GSIZE_FORMAT"\n", __func__, (gsize)thread->tid));
3047 mono_thread_internal_abort (thread);
3051 return !mono_native_thread_id_equals (thread_get_tid (thread), self)
3052 && !mono_gc_is_finalizer_internal_thread (thread);
3056 * mono_threads_set_shutting_down:
3058 * Is called by a thread that wants to shut down Mono. If the runtime is already
3059 * shutting down, the calling thread is suspended/stopped, and this function never
3063 mono_threads_set_shutting_down (void)
3065 MonoInternalThread *current_thread = mono_thread_internal_current ();
3067 mono_threads_lock ();
3069 if (shutting_down) {
3070 mono_threads_unlock ();
3072 /* Make sure we're properly suspended/stopped */
3074 LOCK_THREAD (current_thread);
3076 if ((current_thread->state & ThreadState_SuspendRequested) ||
3077 (current_thread->state & ThreadState_AbortRequested) ||
3078 (current_thread->state & ThreadState_StopRequested)) {
3079 UNLOCK_THREAD (current_thread);
3080 mono_thread_execute_interruption ();
3082 current_thread->state |= ThreadState_Stopped;
3083 UNLOCK_THREAD (current_thread);
3086 /*since we're killing the thread, detach it.*/
3087 mono_thread_detach_internal (current_thread);
3089 /* Wake up other threads potentially waiting for us */
3090 mono_thread_info_exit (0);
3092 shutting_down = TRUE;
3094 /* Not really a background state change, but this will
3095 * interrupt the main thread if it is waiting for all
3096 * the other threads.
3098 mono_os_event_set (&background_change_event);
3100 mono_threads_unlock ();
3104 void mono_thread_manage (void)
3106 struct wait_data wait_data;
3107 struct wait_data *wait = &wait_data;
3109 memset (wait, 0, sizeof (struct wait_data));
3110 /* join each thread that's still running */
3111 THREAD_DEBUG (g_message ("%s: Joining each running thread...", __func__));
3113 mono_threads_lock ();
3115 THREAD_DEBUG (g_message("%s: No threads", __func__));
3116 mono_threads_unlock ();
3119 mono_threads_unlock ();
3122 mono_threads_lock ();
3123 if (shutting_down) {
3124 /* somebody else is shutting down */
3125 mono_threads_unlock ();
3128 THREAD_DEBUG (g_message ("%s: There are %d threads to join", __func__, mono_g_hash_table_size (threads));
3129 mono_g_hash_table_foreach (threads, print_tids, NULL));
3131 mono_os_event_reset (&background_change_event);
3133 /* We must zero all InternalThread pointers to avoid making the GC unhappy. */
3134 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3135 mono_g_hash_table_foreach (threads, build_wait_tids, wait);
3136 mono_threads_unlock ();
3138 /* Something to wait for */
3139 wait_for_tids (wait, INFINITE, TRUE);
3140 THREAD_DEBUG (g_message ("%s: I have %d threads after waiting.", __func__, wait->num));
3141 } while(wait->num>0);
3143 /* Mono is shutting down, so just wait for the end */
3144 if (!mono_runtime_try_shutdown ()) {
3145 /*FIXME mono_thread_suspend probably should call mono_thread_execute_interruption when self interrupting. */
3146 mono_thread_suspend (mono_thread_internal_current ());
3147 mono_thread_execute_interruption ();
3151 * Remove everything but the finalizer thread and self.
3152 * Also abort all the background threads
3155 mono_threads_lock ();
3158 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3159 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3160 mono_g_hash_table_foreach_remove (threads, remove_and_abort_threads, wait);
3162 mono_threads_unlock ();
3164 THREAD_DEBUG (g_message ("%s: wait->num is now %d", __func__, wait->num));
3165 if (wait->num > 0) {
3166 /* Something to wait for */
3167 wait_for_tids (wait, INFINITE, FALSE);
3169 } while (wait->num > 0);
3172 * give the subthreads a chance to really quit (this is mainly needed
3173 * to get correct user and system times from getrusage/wait/time(1)).
3174 * This could be removed if we avoid pthread_detach() and use pthread_join().
3176 mono_thread_info_yield ();
3180 collect_threads_for_suspend (gpointer key, gpointer value, gpointer user_data)
3182 MonoInternalThread *thread = (MonoInternalThread*)value;
3183 struct wait_data *wait = (struct wait_data*)user_data;
3186 * We try to exclude threads early, to avoid running into the MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS
3188 * This needs no locking.
3190 if ((thread->state & ThreadState_Suspended) != 0 ||
3191 (thread->state & ThreadState_Stopped) != 0)
3194 if (wait->num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS) {
3195 wait->handles [wait->num] = mono_threads_open_thread_handle (thread->handle);
3196 wait->threads [wait->num] = thread;
3202 * mono_thread_suspend_all_other_threads:
3204 * Suspend all managed threads except the finalizer thread and this thread. It is
3205 * not possible to resume them later.
3207 void mono_thread_suspend_all_other_threads (void)
3209 struct wait_data wait_data;
3210 struct wait_data *wait = &wait_data;
3212 MonoNativeThreadId self = mono_native_thread_id_get ();
3213 guint32 eventidx = 0;
3214 gboolean starting, finished;
3216 memset (wait, 0, sizeof (struct wait_data));
3218 * The other threads could be in an arbitrary state at this point, i.e.
3219 * they could be starting up, shutting down etc. This means that there could be
3220 * threads which are not even in the threads hash table yet.
3224 * First we set a barrier which will be checked by all threads before they
3225 * are added to the threads hash table, and they will exit if the flag is set.
3226 * This ensures that no threads could be added to the hash later.
3227 * We will use shutting_down as the barrier for now.
3229 g_assert (shutting_down);
3232 * We make multiple calls to WaitForMultipleObjects since:
3233 * - we can only wait for MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS threads
3234 * - some threads could exit without becoming suspended
3239 * Make a copy of the hashtable since we can't do anything with
3240 * threads while threads_mutex is held.
3243 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3244 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3245 mono_threads_lock ();
3246 mono_g_hash_table_foreach (threads, collect_threads_for_suspend, wait);
3247 mono_threads_unlock ();
3250 /* Get the suspended events that we'll be waiting for */
3251 for (i = 0; i < wait->num; ++i) {
3252 MonoInternalThread *thread = wait->threads [i];
3254 if (mono_native_thread_id_equals (thread_get_tid (thread), self)
3255 || mono_gc_is_finalizer_internal_thread (thread)
3256 || (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE)
3258 //mono_threads_close_thread_handle (wait->handles [i]);
3259 wait->threads [i] = NULL; /* ignore this thread in next loop */
3263 LOCK_THREAD (thread);
3265 if ((thread->state & ThreadState_Suspended) != 0 ||
3266 (thread->state & ThreadState_StopRequested) != 0 ||
3267 (thread->state & ThreadState_Stopped) != 0) {
3268 UNLOCK_THREAD (thread);
3269 mono_threads_close_thread_handle (wait->handles [i]);
3270 wait->threads [i] = NULL; /* ignore this thread in next loop */
3276 /* Convert abort requests into suspend requests */
3277 if ((thread->state & ThreadState_AbortRequested) != 0)
3278 thread->state &= ~ThreadState_AbortRequested;
3280 thread->state |= ThreadState_SuspendRequested;
3281 if (mono_threads_is_coop_enabled ())
3282 mono_os_event_reset (thread->suspended);
3284 /* Signal the thread to suspend + calls UNLOCK_THREAD (thread) */
3285 async_suspend_internal (thread, TRUE);
3287 if (eventidx <= 0) {
3289 * If there are threads which are starting up, we wait until they
3290 * are suspended when they try to register in the threads hash.
3291 * This is guaranteed to finish, since the threads which can create new
3292 * threads get suspended after a while.
3293 * FIXME: The finalizer thread can still create new threads.
3295 mono_threads_lock ();
3296 if (threads_starting_up)
3297 starting = mono_g_hash_table_size (threads_starting_up) > 0;
3300 mono_threads_unlock ();
3302 mono_thread_info_sleep (100, NULL);
3310 MonoInternalThread *thread;
3311 MonoStackFrameInfo *frames;
3312 int nframes, max_frames;
3313 int nthreads, max_threads;
3314 MonoInternalThread **threads;
3315 } ThreadDumpUserData;
3317 static gboolean thread_dump_requested;
3319 /* This needs to be async safe */
3321 collect_frame (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
3323 ThreadDumpUserData *ud = (ThreadDumpUserData *)data;
3325 if (ud->nframes < ud->max_frames) {
3326 memcpy (&ud->frames [ud->nframes], frame, sizeof (MonoStackFrameInfo));
3333 /* This needs to be async safe */
3334 static SuspendThreadResult
3335 get_thread_dump (MonoThreadInfo *info, gpointer ud)
3337 ThreadDumpUserData *user_data = (ThreadDumpUserData *)ud;
3338 MonoInternalThread *thread = user_data->thread;
3341 /* This no longer works with remote unwinding */
3342 g_string_append_printf (text, " tid=0x%p this=0x%p ", (gpointer)(gsize)thread->tid, thread);
3343 mono_thread_internal_describe (thread, text);
3344 g_string_append (text, "\n");
3347 if (thread == mono_thread_internal_current ())
3348 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (collect_frame, NULL, MONO_UNWIND_SIGNAL_SAFE, ud);
3350 mono_get_eh_callbacks ()->mono_walk_stack_with_state (collect_frame, mono_thread_info_get_suspend_state (info), MONO_UNWIND_SIGNAL_SAFE, ud);
3352 return MonoResumeThread;
3356 int nthreads, max_threads;
3357 MonoInternalThread **threads;
3358 } CollectThreadsUserData;
3361 collect_thread (gpointer key, gpointer value, gpointer user)
3363 CollectThreadsUserData *ud = (CollectThreadsUserData *)user;
3364 MonoInternalThread *thread = (MonoInternalThread *)value;
3366 if (ud->nthreads < ud->max_threads)
3367 ud->threads [ud->nthreads ++] = thread;
3371 * Collect running threads into the THREADS array.
3372 * THREADS should be an array allocated on the stack.
3375 collect_threads (MonoInternalThread **thread_array, int max_threads)
3377 CollectThreadsUserData ud;
3379 memset (&ud, 0, sizeof (ud));
3380 /* This array contains refs, but its on the stack, so its ok */
3381 ud.threads = thread_array;
3382 ud.max_threads = max_threads;
3384 mono_threads_lock ();
3385 mono_g_hash_table_foreach (threads, collect_thread, &ud);
3386 mono_threads_unlock ();
3392 dump_thread (MonoInternalThread *thread, ThreadDumpUserData *ud)
3394 GString* text = g_string_new (0);
3396 GError *error = NULL;
3399 ud->thread = thread;
3402 /* Collect frames for the thread */
3403 if (thread == mono_thread_internal_current ()) {
3404 get_thread_dump (mono_thread_info_current (), ud);
3406 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), FALSE, get_thread_dump, ud);
3410 * Do all the non async-safe work outside of get_thread_dump.
3413 name = g_utf16_to_utf8 (thread->name, thread->name_len, NULL, NULL, &error);
3415 g_string_append_printf (text, "\n\"%s\"", name);
3418 else if (thread->threadpool_thread) {
3419 g_string_append (text, "\n\"<threadpool thread>\"");
3421 g_string_append (text, "\n\"<unnamed thread>\"");
3424 for (i = 0; i < ud->nframes; ++i) {
3425 MonoStackFrameInfo *frame = &ud->frames [i];
3426 MonoMethod *method = NULL;
3428 if (frame->type == FRAME_TYPE_MANAGED)
3429 method = mono_jit_info_get_method (frame->ji);
3432 gchar *location = mono_debug_print_stack_frame (method, frame->native_offset, frame->domain);
3433 g_string_append_printf (text, " %s\n", location);
3436 g_string_append_printf (text, " at <unknown> <0x%05x>\n", frame->native_offset);
3440 fprintf (stdout, "%s", text->str);
3442 #if PLATFORM_WIN32 && TARGET_WIN32 && _DEBUG
3443 OutputDebugStringA(text->str);
3446 g_string_free (text, TRUE);
3451 mono_threads_perform_thread_dump (void)
3453 ThreadDumpUserData ud;
3454 MonoInternalThread *thread_array [128];
3455 int tindex, nthreads;
3457 if (!thread_dump_requested)
3460 printf ("Full thread dump:\n");
3462 /* Make a copy of the threads hash to avoid doing work inside threads_lock () */
3463 nthreads = collect_threads (thread_array, 128);
3465 memset (&ud, 0, sizeof (ud));
3466 ud.frames = g_new0 (MonoStackFrameInfo, 256);
3467 ud.max_frames = 256;
3469 for (tindex = 0; tindex < nthreads; ++tindex)
3470 dump_thread (thread_array [tindex], &ud);
3474 thread_dump_requested = FALSE;
3477 /* Obtain the thread dump of all threads */
3479 mono_threads_get_thread_dump (MonoArray **out_threads, MonoArray **out_stack_frames, MonoError *error)
3482 ThreadDumpUserData ud;
3483 MonoInternalThread *thread_array [128];
3484 MonoDomain *domain = mono_domain_get ();
3485 MonoDebugSourceLocation *location;
3486 int tindex, nthreads;
3488 mono_error_init (error);
3490 *out_threads = NULL;
3491 *out_stack_frames = NULL;
3493 /* Make a copy of the threads hash to avoid doing work inside threads_lock () */
3494 nthreads = collect_threads (thread_array, 128);
3496 memset (&ud, 0, sizeof (ud));
3497 ud.frames = g_new0 (MonoStackFrameInfo, 256);
3498 ud.max_frames = 256;
3500 *out_threads = mono_array_new_checked (domain, mono_defaults.thread_class, nthreads, error);
3503 *out_stack_frames = mono_array_new_checked (domain, mono_defaults.array_class, nthreads, error);
3507 for (tindex = 0; tindex < nthreads; ++tindex) {
3508 MonoInternalThread *thread = thread_array [tindex];
3509 MonoArray *thread_frames;
3515 /* Collect frames for the thread */
3516 if (thread == mono_thread_internal_current ()) {
3517 get_thread_dump (mono_thread_info_current (), &ud);
3519 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), FALSE, get_thread_dump, &ud);
3522 mono_array_setref_fast (*out_threads, tindex, mono_thread_current_for_thread (thread));
3524 thread_frames = mono_array_new_checked (domain, mono_defaults.stack_frame_class, ud.nframes, error);
3527 mono_array_setref_fast (*out_stack_frames, tindex, thread_frames);
3529 for (i = 0; i < ud.nframes; ++i) {
3530 MonoStackFrameInfo *frame = &ud.frames [i];
3531 MonoMethod *method = NULL;
3532 MonoStackFrame *sf = (MonoStackFrame *)mono_object_new_checked (domain, mono_defaults.stack_frame_class, error);
3536 sf->native_offset = frame->native_offset;
3538 if (frame->type == FRAME_TYPE_MANAGED)
3539 method = mono_jit_info_get_method (frame->ji);
3542 sf->method_address = (gsize) frame->ji->code_start;
3544 MonoReflectionMethod *rm = mono_method_get_object_checked (domain, method, NULL, error);
3547 MONO_OBJECT_SETREF (sf, method, rm);
3549 location = mono_debug_lookup_source_location (method, frame->native_offset, domain);
3551 sf->il_offset = location->il_offset;
3553 if (location && location->source_file) {
3554 MONO_OBJECT_SETREF (sf, filename, mono_string_new (domain, location->source_file));
3555 sf->line = location->row;
3556 sf->column = location->column;
3558 mono_debug_free_source_location (location);
3563 mono_array_setref (thread_frames, i, sf);
3569 return is_ok (error);
3573 * mono_threads_request_thread_dump:
3575 * Ask all threads except the current to print their stacktrace to stdout.
3578 mono_threads_request_thread_dump (void)
3580 /*The new thread dump code runs out of the finalizer thread. */
3581 thread_dump_requested = TRUE;
3582 mono_gc_finalize_notify ();
3587 gint allocated; /* +1 so that refs [allocated] == NULL */
3591 typedef struct ref_stack RefStack;
3594 ref_stack_new (gint initial_size)
3598 initial_size = MAX (initial_size, 16) + 1;
3599 rs = g_new0 (RefStack, 1);
3600 rs->refs = g_new0 (gpointer, initial_size);
3601 rs->allocated = initial_size;
3606 ref_stack_destroy (gpointer ptr)
3608 RefStack *rs = (RefStack *)ptr;
3617 ref_stack_push (RefStack *rs, gpointer ptr)
3619 g_assert (rs != NULL);
3621 if (rs->bottom >= rs->allocated) {
3622 rs->refs = (void **)g_realloc (rs->refs, rs->allocated * 2 * sizeof (gpointer) + 1);
3623 rs->allocated <<= 1;
3624 rs->refs [rs->allocated] = NULL;
3626 rs->refs [rs->bottom++] = ptr;
3630 ref_stack_pop (RefStack *rs)
3632 if (rs == NULL || rs->bottom == 0)
3636 rs->refs [rs->bottom] = NULL;
3640 ref_stack_find (RefStack *rs, gpointer ptr)
3647 for (refs = rs->refs; refs && *refs; refs++) {
3655 * mono_thread_push_appdomain_ref:
3657 * Register that the current thread may have references to objects in domain
3658 * @domain on its stack. Each call to this function should be paired with a
3659 * call to pop_appdomain_ref.
3662 mono_thread_push_appdomain_ref (MonoDomain *domain)
3664 MonoInternalThread *thread = mono_thread_internal_current ();
3667 /* printf ("PUSH REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, domain->friendly_name); */
3668 SPIN_LOCK (thread->lock_thread_id);
3669 if (thread->appdomain_refs == NULL)
3670 thread->appdomain_refs = ref_stack_new (16);
3671 ref_stack_push ((RefStack *)thread->appdomain_refs, domain);
3672 SPIN_UNLOCK (thread->lock_thread_id);
3677 mono_thread_pop_appdomain_ref (void)
3679 MonoInternalThread *thread = mono_thread_internal_current ();
3682 /* printf ("POP REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, ((MonoDomain*)(thread->appdomain_refs->data))->friendly_name); */
3683 SPIN_LOCK (thread->lock_thread_id);
3684 ref_stack_pop ((RefStack *)thread->appdomain_refs);
3685 SPIN_UNLOCK (thread->lock_thread_id);
3690 mono_thread_internal_has_appdomain_ref (MonoInternalThread *thread, MonoDomain *domain)
3693 SPIN_LOCK (thread->lock_thread_id);
3694 res = ref_stack_find ((RefStack *)thread->appdomain_refs, domain);
3695 SPIN_UNLOCK (thread->lock_thread_id);
3700 mono_thread_has_appdomain_ref (MonoThread *thread, MonoDomain *domain)
3702 return mono_thread_internal_has_appdomain_ref (thread->internal_thread, domain);
3705 typedef struct abort_appdomain_data {
3706 struct wait_data wait;
3708 } abort_appdomain_data;
3711 collect_appdomain_thread (gpointer key, gpointer value, gpointer user_data)
3713 MonoInternalThread *thread = (MonoInternalThread*)value;
3714 abort_appdomain_data *data = (abort_appdomain_data*)user_data;
3715 MonoDomain *domain = data->domain;
3717 if (mono_thread_internal_has_appdomain_ref (thread, domain)) {
3718 /* printf ("ABORTING THREAD %p BECAUSE IT REFERENCES DOMAIN %s.\n", thread->tid, domain->friendly_name); */
3720 if(data->wait.num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS) {
3721 data->wait.handles [data->wait.num] = mono_threads_open_thread_handle (thread->handle);
3722 data->wait.threads [data->wait.num] = thread;
3725 /* Just ignore the rest, we can't do anything with
3733 * mono_threads_abort_appdomain_threads:
3735 * Abort threads which has references to the given appdomain.
3738 mono_threads_abort_appdomain_threads (MonoDomain *domain, int timeout)
3740 #ifdef __native_client__
3744 abort_appdomain_data user_data;
3746 int orig_timeout = timeout;
3749 THREAD_DEBUG (g_message ("%s: starting abort", __func__));
3751 start_time = mono_msec_ticks ();
3753 mono_threads_lock ();
3755 user_data.domain = domain;
3756 user_data.wait.num = 0;
3757 /* This shouldn't take any locks */
3758 mono_g_hash_table_foreach (threads, collect_appdomain_thread, &user_data);
3759 mono_threads_unlock ();
3761 if (user_data.wait.num > 0) {
3762 /* Abort the threads outside the threads lock */
3763 for (i = 0; i < user_data.wait.num; ++i)
3764 mono_thread_internal_abort (user_data.wait.threads [i]);
3767 * We should wait for the threads either to abort, or to leave the
3768 * domain. We can't do the latter, so we wait with a timeout.
3770 wait_for_tids (&user_data.wait, 100, FALSE);
3773 /* Update remaining time */
3774 timeout -= mono_msec_ticks () - start_time;
3775 start_time = mono_msec_ticks ();
3777 if (orig_timeout != -1 && timeout < 0)
3780 while (user_data.wait.num > 0);
3782 THREAD_DEBUG (g_message ("%s: abort done", __func__));
3788 clear_cached_culture (gpointer key, gpointer value, gpointer user_data)
3790 MonoInternalThread *thread = (MonoInternalThread*)value;
3791 MonoDomain *domain = (MonoDomain*)user_data;
3794 /* No locking needed here */
3795 /* FIXME: why no locking? writes to the cache are protected with synch_cs above */
3797 if (thread->cached_culture_info) {
3798 for (i = 0; i < NUM_CACHED_CULTURES * 2; ++i) {
3799 MonoObject *obj = mono_array_get (thread->cached_culture_info, MonoObject*, i);
3800 if (obj && obj->vtable->domain == domain)
3801 mono_array_set (thread->cached_culture_info, MonoObject*, i, NULL);
3807 * mono_threads_clear_cached_culture:
3809 * Clear the cached_current_culture from all threads if it is in the
3813 mono_threads_clear_cached_culture (MonoDomain *domain)
3815 mono_threads_lock ();
3816 mono_g_hash_table_foreach (threads, clear_cached_culture, domain);
3817 mono_threads_unlock ();
3821 * mono_thread_get_undeniable_exception:
3823 * Return an exception which needs to be raised when leaving a catch clause.
3824 * This is used for undeniable exception propagation.
3827 mono_thread_get_undeniable_exception (void)
3829 MonoInternalThread *thread = mono_thread_internal_current ();
3831 if (thread && thread->abort_exc && !is_running_protected_wrapper ()) {
3833 * FIXME: Clear the abort exception and return an AppDomainUnloaded
3834 * exception if the thread no longer references a dying appdomain.
3836 thread->abort_exc->trace_ips = NULL;
3837 thread->abort_exc->stack_trace = NULL;
3838 return thread->abort_exc;
3844 #if MONO_SMALL_CONFIG
3845 #define NUM_STATIC_DATA_IDX 4
3846 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
3850 #define NUM_STATIC_DATA_IDX 8
3851 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
3852 1024, 4096, 16384, 65536, 262144, 1048576, 4194304, 16777216
3856 static MonoBitSet *thread_reference_bitmaps [NUM_STATIC_DATA_IDX];
3857 static MonoBitSet *context_reference_bitmaps [NUM_STATIC_DATA_IDX];
3860 mark_slots (void *addr, MonoBitSet **bitmaps, MonoGCMarkFunc mark_func, void *gc_data)
3862 gpointer *static_data = (gpointer *)addr;
3864 for (int i = 0; i < NUM_STATIC_DATA_IDX; ++i) {
3865 void **ptr = (void **)static_data [i];
3870 MONO_BITSET_FOREACH (bitmaps [i], idx, {
3871 void **p = ptr + idx;
3874 mark_func ((MonoObject**)p, gc_data);
3880 mark_tls_slots (void *addr, MonoGCMarkFunc mark_func, void *gc_data)
3882 mark_slots (addr, thread_reference_bitmaps, mark_func, gc_data);
3886 mark_ctx_slots (void *addr, MonoGCMarkFunc mark_func, void *gc_data)
3888 mark_slots (addr, context_reference_bitmaps, mark_func, gc_data);
3892 * mono_alloc_static_data
3894 * Allocate memory blocks for storing threads or context static data
3897 mono_alloc_static_data (gpointer **static_data_ptr, guint32 offset, gboolean threadlocal)
3899 guint idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
3902 gpointer* static_data = *static_data_ptr;
3904 static MonoGCDescriptor tls_desc = MONO_GC_DESCRIPTOR_NULL;
3905 static MonoGCDescriptor ctx_desc = MONO_GC_DESCRIPTOR_NULL;
3907 if (mono_gc_user_markers_supported ()) {
3908 if (tls_desc == MONO_GC_DESCRIPTOR_NULL)
3909 tls_desc = mono_gc_make_root_descr_user (mark_tls_slots);
3911 if (ctx_desc == MONO_GC_DESCRIPTOR_NULL)
3912 ctx_desc = mono_gc_make_root_descr_user (mark_ctx_slots);
3915 static_data = (void **)mono_gc_alloc_fixed (static_data_size [0], threadlocal ? tls_desc : ctx_desc,
3916 threadlocal ? MONO_ROOT_SOURCE_THREAD_STATIC : MONO_ROOT_SOURCE_CONTEXT_STATIC,
3917 threadlocal ? "managed thread-static variables" : "managed context-static variables");
3918 *static_data_ptr = static_data;
3919 static_data [0] = static_data;
3922 for (i = 1; i <= idx; ++i) {
3923 if (static_data [i])
3926 if (mono_gc_user_markers_supported ())
3927 static_data [i] = g_malloc0 (static_data_size [i]);
3929 static_data [i] = mono_gc_alloc_fixed (static_data_size [i], MONO_GC_DESCRIPTOR_NULL,
3930 threadlocal ? MONO_ROOT_SOURCE_THREAD_STATIC : MONO_ROOT_SOURCE_CONTEXT_STATIC,
3931 threadlocal ? "managed thread-static variables" : "managed context-static variables");
3936 mono_free_static_data (gpointer* static_data)
3939 for (i = 1; i < NUM_STATIC_DATA_IDX; ++i) {
3940 gpointer p = static_data [i];
3944 * At this point, the static data pointer array is still registered with the
3945 * GC, so must ensure that mark_tls_slots() will not encounter any invalid
3946 * data. Freeing the individual arrays without first nulling their slots
3947 * would make it possible for mark_tls/ctx_slots() to encounter a pointer to
3948 * such an already freed array. See bug #13813.
3950 static_data [i] = NULL;
3951 mono_memory_write_barrier ();
3952 if (mono_gc_user_markers_supported ())
3955 mono_gc_free_fixed (p);
3957 mono_gc_free_fixed (static_data);
3961 * mono_init_static_data_info
3963 * Initializes static data counters
3965 static void mono_init_static_data_info (StaticDataInfo *static_data)
3967 static_data->idx = 0;
3968 static_data->offset = 0;
3969 static_data->freelist = NULL;
3973 * mono_alloc_static_data_slot
3975 * Generates an offset for static data. static_data contains the counters
3976 * used to generate it.
3979 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align)
3981 if (!static_data->idx && !static_data->offset) {
3983 * we use the first chunk of the first allocation also as
3984 * an array for the rest of the data
3986 static_data->offset = sizeof (gpointer) * NUM_STATIC_DATA_IDX;
3988 static_data->offset += align - 1;
3989 static_data->offset &= ~(align - 1);
3990 if (static_data->offset + size >= static_data_size [static_data->idx]) {
3991 static_data->idx ++;
3992 g_assert (size <= static_data_size [static_data->idx]);
3993 g_assert (static_data->idx < NUM_STATIC_DATA_IDX);
3994 static_data->offset = 0;
3996 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (static_data->idx, static_data->offset, 0);
3997 static_data->offset += size;
4002 * LOCKING: requires that threads_mutex is held
4005 context_adjust_static_data (MonoAppContext *ctx)
4007 if (context_static_info.offset || context_static_info.idx > 0) {
4008 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (context_static_info.idx, context_static_info.offset, 0);
4009 mono_alloc_static_data (&ctx->static_data, offset, FALSE);
4010 ctx->data->static_data = ctx->static_data;
4015 * LOCKING: requires that threads_mutex is held
4018 alloc_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
4020 MonoInternalThread *thread = (MonoInternalThread *)value;
4021 guint32 offset = GPOINTER_TO_UINT (user);
4023 mono_alloc_static_data (&(thread->static_data), offset, TRUE);
4027 * LOCKING: requires that threads_mutex is held
4030 alloc_context_static_data_helper (gpointer key, gpointer value, gpointer user)
4032 MonoAppContext *ctx = (MonoAppContext *) mono_gchandle_get_target (GPOINTER_TO_INT (key));
4037 guint32 offset = GPOINTER_TO_UINT (user);
4038 mono_alloc_static_data (&ctx->static_data, offset, FALSE);
4039 ctx->data->static_data = ctx->static_data;
4042 static StaticDataFreeList*
4043 search_slot_in_freelist (StaticDataInfo *static_data, guint32 size, guint32 align)
4045 StaticDataFreeList* prev = NULL;
4046 StaticDataFreeList* tmp = static_data->freelist;
4048 if (tmp->size == size) {
4050 prev->next = tmp->next;
4052 static_data->freelist = tmp->next;
4061 #if SIZEOF_VOID_P == 4
4068 update_reference_bitmap (MonoBitSet **sets, guint32 offset, uintptr_t *bitmap, int numbits)
4070 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4072 sets [idx] = mono_bitset_new (static_data_size [idx] / sizeof (uintptr_t), 0);
4073 MonoBitSet *rb = sets [idx];
4074 offset = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
4075 offset /= sizeof (uintptr_t);
4076 /* offset is now the bitmap offset */
4077 for (int i = 0; i < numbits; ++i) {
4078 if (bitmap [i / sizeof (uintptr_t)] & (ONE_P << (i & (sizeof (uintptr_t) * 8 -1))))
4079 mono_bitset_set_fast (rb, offset + i);
4084 clear_reference_bitmap (MonoBitSet **sets, guint32 offset, guint32 size)
4086 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4087 MonoBitSet *rb = sets [idx];
4088 offset = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
4089 offset /= sizeof (uintptr_t);
4090 /* offset is now the bitmap offset */
4091 for (int i = 0; i < size / sizeof (uintptr_t); i++)
4092 mono_bitset_clear_fast (rb, offset + i);
4096 mono_alloc_special_static_data (guint32 static_type, guint32 size, guint32 align, uintptr_t *bitmap, int numbits)
4098 g_assert (static_type == SPECIAL_STATIC_THREAD || static_type == SPECIAL_STATIC_CONTEXT);
4100 StaticDataInfo *info;
4103 if (static_type == SPECIAL_STATIC_THREAD) {
4104 info = &thread_static_info;
4105 sets = thread_reference_bitmaps;
4107 info = &context_static_info;
4108 sets = context_reference_bitmaps;
4111 mono_threads_lock ();
4113 StaticDataFreeList *item = search_slot_in_freelist (info, size, align);
4117 offset = item->offset;
4120 offset = mono_alloc_static_data_slot (info, size, align);
4123 update_reference_bitmap (sets, offset, bitmap, numbits);
4125 if (static_type == SPECIAL_STATIC_THREAD) {
4126 /* This can be called during startup */
4127 if (threads != NULL)
4128 mono_g_hash_table_foreach (threads, alloc_thread_static_data_helper, GUINT_TO_POINTER (offset));
4130 if (contexts != NULL)
4131 g_hash_table_foreach (contexts, alloc_context_static_data_helper, GUINT_TO_POINTER (offset));
4133 ACCESS_SPECIAL_STATIC_OFFSET (offset, type) = SPECIAL_STATIC_OFFSET_TYPE_CONTEXT;
4136 mono_threads_unlock ();
4142 mono_get_special_static_data_for_thread (MonoInternalThread *thread, guint32 offset)
4144 guint32 static_type = ACCESS_SPECIAL_STATIC_OFFSET (offset, type);
4146 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4147 return get_thread_static_data (thread, offset);
4149 return get_context_static_data (thread->current_appcontext, offset);
4154 mono_get_special_static_data (guint32 offset)
4156 return mono_get_special_static_data_for_thread (mono_thread_internal_current (), offset);
4165 * LOCKING: requires that threads_mutex is held
4168 free_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
4170 MonoInternalThread *thread = (MonoInternalThread *)value;
4171 OffsetSize *data = (OffsetSize *)user;
4172 int idx = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, index);
4173 int off = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, offset);
4176 if (!thread->static_data || !thread->static_data [idx])
4178 ptr = ((char*) thread->static_data [idx]) + off;
4179 mono_gc_bzero_atomic (ptr, data->size);
4183 * LOCKING: requires that threads_mutex is held
4186 free_context_static_data_helper (gpointer key, gpointer value, gpointer user)
4188 MonoAppContext *ctx = (MonoAppContext *) mono_gchandle_get_target (GPOINTER_TO_INT (key));
4193 OffsetSize *data = (OffsetSize *)user;
4194 int idx = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, index);
4195 int off = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, offset);
4198 if (!ctx->static_data || !ctx->static_data [idx])
4201 ptr = ((char*) ctx->static_data [idx]) + off;
4202 mono_gc_bzero_atomic (ptr, data->size);
4206 do_free_special_slot (guint32 offset, guint32 size)
4208 guint32 static_type = ACCESS_SPECIAL_STATIC_OFFSET (offset, type);
4210 StaticDataInfo *info;
4212 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4213 info = &thread_static_info;
4214 sets = thread_reference_bitmaps;
4216 info = &context_static_info;
4217 sets = context_reference_bitmaps;
4220 guint32 data_offset = offset;
4221 ACCESS_SPECIAL_STATIC_OFFSET (data_offset, type) = 0;
4222 OffsetSize data = { data_offset, size };
4224 clear_reference_bitmap (sets, data.offset, data.size);
4226 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4227 if (threads != NULL)
4228 mono_g_hash_table_foreach (threads, free_thread_static_data_helper, &data);
4230 if (contexts != NULL)
4231 g_hash_table_foreach (contexts, free_context_static_data_helper, &data);
4234 if (!mono_runtime_is_shutting_down ()) {
4235 StaticDataFreeList *item = g_new0 (StaticDataFreeList, 1);
4237 item->offset = offset;
4240 item->next = info->freelist;
4241 info->freelist = item;
4246 do_free_special (gpointer key, gpointer value, gpointer data)
4248 MonoClassField *field = (MonoClassField *)key;
4249 guint32 offset = GPOINTER_TO_UINT (value);
4252 size = mono_type_size (field->type, &align);
4253 do_free_special_slot (offset, size);
4257 mono_alloc_special_static_data_free (GHashTable *special_static_fields)
4259 mono_threads_lock ();
4261 g_hash_table_foreach (special_static_fields, do_free_special, NULL);
4263 mono_threads_unlock ();
4267 static void CALLBACK dummy_apc (ULONG_PTR param)
4273 * mono_thread_execute_interruption
4275 * Performs the operation that the requested thread state requires (abort,
4278 static MonoException*
4279 mono_thread_execute_interruption (void)
4281 MonoInternalThread *thread = mono_thread_internal_current ();
4282 MonoThread *sys_thread = mono_thread_current ();
4284 LOCK_THREAD (thread);
4286 /* MonoThread::interruption_requested can only be changed with atomics */
4287 if (InterlockedCompareExchange (&thread->interruption_requested, FALSE, TRUE)) {
4288 /* this will consume pending APC calls */
4290 WaitForSingleObjectEx (GetCurrentThread(), 0, TRUE);
4292 InterlockedDecrement (&thread_interruption_requested);
4294 /* Clear the interrupted flag of the thread so it can wait again */
4295 mono_thread_info_clear_self_interrupt ();
4298 /* If there's a pending exception and an AbortRequested, the pending exception takes precedence */
4299 if (sys_thread->pending_exception) {
4302 exc = sys_thread->pending_exception;
4303 sys_thread->pending_exception = NULL;
4305 UNLOCK_THREAD (thread);
4307 } else if ((thread->state & ThreadState_AbortRequested) != 0) {
4308 UNLOCK_THREAD (thread);
4309 g_assert (sys_thread->pending_exception == NULL);
4310 if (thread->abort_exc == NULL) {
4312 * This might be racy, but it has to be called outside the lock
4313 * since it calls managed code.
4315 MONO_OBJECT_SETREF (thread, abort_exc, mono_get_exception_thread_abort ());
4317 return thread->abort_exc;
4319 else if ((thread->state & ThreadState_SuspendRequested) != 0) {
4320 /* calls UNLOCK_THREAD (thread) */
4321 self_suspend_internal ();
4324 else if ((thread->state & ThreadState_StopRequested) != 0) {
4325 /* FIXME: do this through the JIT? */
4327 UNLOCK_THREAD (thread);
4329 mono_thread_exit ();
4331 } else if (thread->thread_interrupt_requested) {
4333 thread->thread_interrupt_requested = FALSE;
4334 UNLOCK_THREAD (thread);
4336 return(mono_get_exception_thread_interrupted ());
4339 UNLOCK_THREAD (thread);
4345 * mono_thread_request_interruption
4347 * A signal handler can call this method to request the interruption of a
4348 * thread. The result of the interruption will depend on the current state of
4349 * the thread. If the result is an exception that needs to be throw, it is
4350 * provided as return value.
4353 mono_thread_request_interruption (gboolean running_managed)
4355 MonoInternalThread *thread = mono_thread_internal_current ();
4357 /* The thread may already be stopping */
4362 if (thread->interrupt_on_stop &&
4363 thread->state & ThreadState_StopRequested &&
4364 thread->state & ThreadState_Background)
4367 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4369 InterlockedIncrement (&thread_interruption_requested);
4371 if (!running_managed || is_running_protected_wrapper ()) {
4372 /* Can't stop while in unmanaged code. Increase the global interruption
4373 request count. When exiting the unmanaged method the count will be
4374 checked and the thread will be interrupted. */
4376 /* this will awake the thread if it is in WaitForSingleObject
4378 /* Our implementation of this function ignores the func argument */
4380 QueueUserAPC ((PAPCFUNC)dummy_apc, thread->native_handle, (ULONG_PTR)NULL);
4382 mono_thread_info_self_interrupt ();
4387 return mono_thread_execute_interruption ();
4391 /*This function should be called by a thread after it has exited all of
4392 * its handle blocks at interruption time.*/
4394 mono_thread_resume_interruption (void)
4396 MonoInternalThread *thread = mono_thread_internal_current ();
4397 gboolean still_aborting;
4399 /* The thread may already be stopping */
4403 LOCK_THREAD (thread);
4404 still_aborting = (thread->state & (ThreadState_AbortRequested|ThreadState_StopRequested)) != 0;
4405 UNLOCK_THREAD (thread);
4407 /*This can happen if the protected block called Thread::ResetAbort*/
4408 if (!still_aborting)
4411 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4413 InterlockedIncrement (&thread_interruption_requested);
4415 mono_thread_info_self_interrupt ();
4417 return mono_thread_execute_interruption ();
4420 gboolean mono_thread_interruption_requested ()
4422 if (thread_interruption_requested) {
4423 MonoInternalThread *thread = mono_thread_internal_current ();
4424 /* The thread may already be stopping */
4426 return (thread->interruption_requested);
4431 static MonoException*
4432 mono_thread_interruption_checkpoint_request (gboolean bypass_abort_protection)
4434 MonoInternalThread *thread = mono_thread_internal_current ();
4436 /* The thread may already be stopping */
4440 if (thread->interruption_requested && (bypass_abort_protection || !is_running_protected_wrapper ())) {
4441 MonoException* exc = mono_thread_execute_interruption ();
4449 * Performs the interruption of the current thread, if one has been requested,
4450 * and the thread is not running a protected wrapper.
4451 * Return the exception which needs to be thrown, if any.
4454 mono_thread_interruption_checkpoint (void)
4456 return mono_thread_interruption_checkpoint_request (FALSE);
4460 * Performs the interruption of the current thread, if one has been requested.
4461 * Return the exception which needs to be thrown, if any.
4464 mono_thread_force_interruption_checkpoint_noraise (void)
4466 return mono_thread_interruption_checkpoint_request (TRUE);
4470 * mono_set_pending_exception:
4472 * Set the pending exception of the current thread to EXC.
4473 * The exception will be thrown when execution returns to managed code.
4476 mono_set_pending_exception (MonoException *exc)
4478 MonoThread *thread = mono_thread_current ();
4480 /* The thread may already be stopping */
4484 MONO_OBJECT_SETREF (thread, pending_exception, exc);
4486 mono_thread_request_interruption (FALSE);
4490 * mono_thread_interruption_request_flag:
4492 * Returns the address of a flag that will be non-zero if an interruption has
4493 * been requested for a thread. The thread to interrupt may not be the current
4494 * thread, so an additional call to mono_thread_interruption_requested() or
4495 * mono_thread_interruption_checkpoint() is allways needed if the flag is not
4498 gint32* mono_thread_interruption_request_flag ()
4500 return &thread_interruption_requested;
4504 mono_thread_init_apartment_state (void)
4507 MonoInternalThread* thread = mono_thread_internal_current ();
4509 /* Positive return value indicates success, either
4510 * S_OK if this is first CoInitialize call, or
4511 * S_FALSE if CoInitialize already called, but with same
4512 * threading model. A negative value indicates failure,
4513 * probably due to trying to change the threading model.
4515 if (CoInitializeEx(NULL, (thread->apartment_state == ThreadApartmentState_STA)
4516 ? COINIT_APARTMENTTHREADED
4517 : COINIT_MULTITHREADED) < 0) {
4518 thread->apartment_state = ThreadApartmentState_Unknown;
4524 mono_thread_cleanup_apartment_state (void)
4527 MonoInternalThread* thread = mono_thread_internal_current ();
4529 if (thread && thread->apartment_state != ThreadApartmentState_Unknown) {
4536 mono_thread_set_state (MonoInternalThread *thread, MonoThreadState state)
4538 LOCK_THREAD (thread);
4539 thread->state |= state;
4540 UNLOCK_THREAD (thread);
4544 * mono_thread_test_and_set_state:
4546 * Test if current state of @thread include @test. If it does not, OR @set into the state.
4548 * Returns TRUE is @set was OR'd in.
4551 mono_thread_test_and_set_state (MonoInternalThread *thread, MonoThreadState test, MonoThreadState set)
4553 LOCK_THREAD (thread);
4555 if ((thread->state & test) != 0) {
4556 UNLOCK_THREAD (thread);
4560 thread->state |= set;
4561 UNLOCK_THREAD (thread);
4567 mono_thread_clr_state (MonoInternalThread *thread, MonoThreadState state)
4569 LOCK_THREAD (thread);
4570 thread->state &= ~state;
4571 UNLOCK_THREAD (thread);
4575 mono_thread_test_state (MonoInternalThread *thread, MonoThreadState test)
4577 gboolean ret = FALSE;
4579 LOCK_THREAD (thread);
4581 if ((thread->state & test) != 0) {
4585 UNLOCK_THREAD (thread);
4590 static gboolean has_tls_get = FALSE;
4593 mono_runtime_set_has_tls_get (gboolean val)
4599 mono_runtime_has_tls_get (void)
4605 self_interrupt_thread (void *_unused)
4608 MonoThreadInfo *info;
4610 exc = mono_thread_execute_interruption ();
4612 if (mono_threads_is_coop_enabled ()) {
4613 /* We can return from an async call in coop, as
4614 * it's simply called when exiting the safepoint */
4618 g_error ("%s: we can't resume from an async call", __func__);
4621 info = mono_thread_info_current ();
4623 /* We must use _with_context since we didn't trampoline into the runtime */
4624 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. */
4628 mono_jit_info_match (MonoJitInfo *ji, gpointer ip)
4632 return ji->code_start <= ip && (char*)ip < (char*)ji->code_start + ji->code_size;
4636 last_managed (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
4638 MonoJitInfo **dest = (MonoJitInfo **)data;
4644 mono_thread_info_get_last_managed (MonoThreadInfo *info)
4646 MonoJitInfo *ji = NULL;
4651 * The suspended thread might be holding runtime locks. Make sure we don't try taking
4652 * any runtime locks while unwinding. In coop case we shouldn't safepoint in regions
4653 * where we hold runtime locks.
4655 if (!mono_threads_is_coop_enabled ())
4656 mono_thread_info_set_is_async_context (TRUE);
4657 mono_get_eh_callbacks ()->mono_walk_stack_with_state (last_managed, mono_thread_info_get_suspend_state (info), MONO_UNWIND_SIGNAL_SAFE, &ji);
4658 if (!mono_threads_is_coop_enabled ())
4659 mono_thread_info_set_is_async_context (FALSE);
4664 MonoInternalThread *thread;
4665 gboolean install_async_abort;
4666 MonoThreadInfoInterruptToken *interrupt_token;
4669 static SuspendThreadResult
4670 async_abort_critical (MonoThreadInfo *info, gpointer ud)
4672 AbortThreadData *data = (AbortThreadData *)ud;
4673 MonoInternalThread *thread = data->thread;
4674 MonoJitInfo *ji = NULL;
4675 gboolean protected_wrapper;
4676 gboolean running_managed;
4678 if (mono_get_eh_callbacks ()->mono_install_handler_block_guard (mono_thread_info_get_suspend_state (info)))
4679 return MonoResumeThread;
4682 The target thread is running at least one protected block, which must not be interrupted, so we give up.
4683 The protected block code will give them a chance when appropriate.
4685 if (thread->abort_protected_block_count)
4686 return MonoResumeThread;
4688 /*someone is already interrupting it*/
4689 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4690 return MonoResumeThread;
4692 InterlockedIncrement (&thread_interruption_requested);
4694 ji = mono_thread_info_get_last_managed (info);
4695 protected_wrapper = ji && !ji->is_trampoline && !ji->async && mono_threads_is_critical_method (mono_jit_info_get_method (ji));
4696 running_managed = mono_jit_info_match (ji, MONO_CONTEXT_GET_IP (&mono_thread_info_get_suspend_state (info)->ctx));
4698 if (!protected_wrapper && running_managed) {
4699 /*We are in managed code*/
4700 /*Set the thread to call */
4701 if (data->install_async_abort)
4702 mono_thread_info_setup_async_call (info, self_interrupt_thread, NULL);
4703 return MonoResumeThread;
4706 * This will cause waits to be broken.
4707 * It will also prevent the thread from entering a wait, so if the thread returns
4708 * from the wait before it receives the abort signal, it will just spin in the wait
4709 * functions in the io-layer until the signal handler calls QueueUserAPC which will
4712 data->interrupt_token = mono_thread_info_prepare_interrupt (info);
4714 return MonoResumeThread;
4719 async_abort_internal (MonoInternalThread *thread, gboolean install_async_abort)
4721 AbortThreadData data;
4723 g_assert (thread != mono_thread_internal_current ());
4725 data.thread = thread;
4726 data.install_async_abort = install_async_abort;
4727 data.interrupt_token = NULL;
4729 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), TRUE, async_abort_critical, &data);
4730 if (data.interrupt_token)
4731 mono_thread_info_finish_interrupt (data.interrupt_token);
4732 /*FIXME we need to wait for interruption to complete -- figure out how much into interruption we should wait for here*/
4736 self_abort_internal (MonoError *error)
4740 mono_error_init (error);
4742 /* FIXME this is insanely broken, it doesn't cause interruption to happen synchronously
4743 * since passing FALSE to mono_thread_request_interruption makes sure it returns NULL */
4746 Self aborts ignore the protected block logic and raise the TAE regardless. This is verified by one of the tests in mono/tests/abort-cctor.cs.
4748 exc = mono_thread_request_interruption (TRUE);
4750 mono_error_set_exception_instance (error, exc);
4752 mono_thread_info_self_interrupt ();
4756 MonoInternalThread *thread;
4758 MonoThreadInfoInterruptToken *interrupt_token;
4759 } SuspendThreadData;
4761 static SuspendThreadResult
4762 async_suspend_critical (MonoThreadInfo *info, gpointer ud)
4764 SuspendThreadData *data = (SuspendThreadData *)ud;
4765 MonoInternalThread *thread = data->thread;
4766 MonoJitInfo *ji = NULL;
4767 gboolean protected_wrapper;
4768 gboolean running_managed;
4770 ji = mono_thread_info_get_last_managed (info);
4771 protected_wrapper = ji && !ji->is_trampoline && !ji->async && mono_threads_is_critical_method (mono_jit_info_get_method (ji));
4772 running_managed = mono_jit_info_match (ji, MONO_CONTEXT_GET_IP (&mono_thread_info_get_suspend_state (info)->ctx));
4774 if (running_managed && !protected_wrapper) {
4775 if (mono_threads_is_coop_enabled ()) {
4776 mono_thread_info_setup_async_call (info, self_interrupt_thread, NULL);
4777 return MonoResumeThread;
4779 thread->state &= ~ThreadState_SuspendRequested;
4780 thread->state |= ThreadState_Suspended;
4781 return KeepSuspended;
4784 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 0)
4785 InterlockedIncrement (&thread_interruption_requested);
4786 if (data->interrupt)
4787 data->interrupt_token = mono_thread_info_prepare_interrupt ((MonoThreadInfo *)thread->thread_info);
4789 return MonoResumeThread;
4793 /* LOCKING: called with @thread synch_cs held, and releases it */
4795 async_suspend_internal (MonoInternalThread *thread, gboolean interrupt)
4797 SuspendThreadData data;
4799 g_assert (thread != mono_thread_internal_current ());
4801 // MOSTLY_ASYNC_SAFE_PRINTF ("ASYNC SUSPEND thread %p\n", thread_get_tid (thread));
4803 data.thread = thread;
4804 data.interrupt = interrupt;
4805 data.interrupt_token = NULL;
4807 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), interrupt, async_suspend_critical, &data);
4808 if (data.interrupt_token)
4809 mono_thread_info_finish_interrupt (data.interrupt_token);
4811 UNLOCK_THREAD (thread);
4814 /* LOCKING: called with @thread synch_cs held, and releases it */
4816 self_suspend_internal (void)
4818 MonoInternalThread *thread;
4820 thread = mono_thread_internal_current ();
4822 // MOSTLY_ASYNC_SAFE_PRINTF ("SELF SUSPEND thread %p\n", thread_get_tid (thread));
4824 if (!mono_threads_is_coop_enabled ())
4825 mono_thread_info_begin_self_suspend ();
4827 thread->state &= ~ThreadState_SuspendRequested;
4828 thread->state |= ThreadState_Suspended;
4830 UNLOCK_THREAD (thread);
4832 if (!mono_threads_is_coop_enabled ())
4833 mono_thread_info_end_self_suspend ();
4836 MonoOSEventWaitRet res;
4838 event = thread->suspended;
4841 res = mono_os_event_wait_one (event, MONO_INFINITE_WAIT);
4842 g_assert (res == MONO_OS_EVENT_WAIT_RET_SUCCESS_0 || res == MONO_OS_EVENT_WAIT_RET_ALERTED);
4848 * mono_thread_is_foreign:
4849 * @thread: the thread to query
4851 * This function allows one to determine if a thread was created by the mono runtime and has
4852 * a well defined lifecycle or it's a foreigh one, created by the native environment.
4854 * Returns: TRUE if @thread was not created by the runtime.
4857 mono_thread_is_foreign (MonoThread *thread)
4859 MonoThreadInfo *info = (MonoThreadInfo *)thread->internal_thread->thread_info;
4860 return info->runtime_thread == FALSE;
4864 * mono_add_joinable_thread:
4866 * Add TID to the list of joinable threads.
4867 * LOCKING: Acquires the threads lock.
4870 mono_threads_add_joinable_thread (gpointer tid)
4874 * We cannot detach from threads because it causes problems like
4875 * 2fd16f60/r114307. So we collect them and join them when
4876 * we have time (in he finalizer thread).
4878 joinable_threads_lock ();
4879 if (!joinable_threads)
4880 joinable_threads = g_hash_table_new (NULL, NULL);
4881 g_hash_table_insert (joinable_threads, tid, tid);
4882 joinable_thread_count ++;
4883 joinable_threads_unlock ();
4885 mono_gc_finalize_notify ();
4890 * mono_threads_join_threads:
4892 * Join all joinable threads. This is called from the finalizer thread.
4893 * LOCKING: Acquires the threads lock.
4896 mono_threads_join_threads (void)
4899 GHashTableIter iter;
4906 if (!joinable_thread_count)
4910 joinable_threads_lock ();
4912 if (g_hash_table_size (joinable_threads)) {
4913 g_hash_table_iter_init (&iter, joinable_threads);
4914 g_hash_table_iter_next (&iter, &key, (void**)&tid);
4915 thread = (pthread_t)tid;
4916 g_hash_table_remove (joinable_threads, key);
4917 joinable_thread_count --;
4920 joinable_threads_unlock ();
4922 if (thread != pthread_self ()) {
4924 /* This shouldn't block */
4925 mono_native_thread_join (thread);
4938 * Wait for thread TID to exit.
4939 * LOCKING: Acquires the threads lock.
4942 mono_thread_join (gpointer tid)
4946 gboolean found = FALSE;
4948 joinable_threads_lock ();
4949 if (!joinable_threads)
4950 joinable_threads = g_hash_table_new (NULL, NULL);
4951 if (g_hash_table_lookup (joinable_threads, tid)) {
4952 g_hash_table_remove (joinable_threads, tid);
4953 joinable_thread_count --;
4956 joinable_threads_unlock ();
4959 thread = (pthread_t)tid;
4961 mono_native_thread_join (thread);
4967 mono_thread_internal_check_for_interruption_critical (MonoInternalThread *thread)
4969 if ((thread->state & (ThreadState_StopRequested | ThreadState_SuspendRequested)) != 0)
4970 mono_thread_interruption_checkpoint ();
4974 mono_thread_internal_unhandled_exception (MonoObject* exc)
4976 MonoClass *klass = exc->vtable->klass;
4977 if (is_threadabort_exception (klass)) {
4978 mono_thread_internal_reset_abort (mono_thread_internal_current ());
4979 } else if (!is_appdomainunloaded_exception (klass)
4980 && mono_runtime_unhandled_exception_policy_get () == MONO_UNHANDLED_POLICY_CURRENT) {
4981 mono_unhandled_exception (exc);
4982 if (mono_environment_exitcode_get () == 1) {
4983 mono_environment_exitcode_set (255);
4984 mono_invoke_unhandled_exception_hook (exc);
4985 g_assert_not_reached ();
4991 ves_icall_System_Threading_Thread_GetStackTraces (MonoArray **out_threads, MonoArray **out_stack_traces)
4994 mono_threads_get_thread_dump (out_threads, out_stack_traces, &error);
4995 mono_error_set_pending_exception (&error);
4999 * mono_threads_attach_coop: called by native->managed wrappers
5003 * - @return: the original domain which needs to be restored, or NULL.
5006 * - @dummy: contains the original domain
5007 * - @return: a cookie containing current MonoThreadInfo*.
5010 mono_threads_attach_coop (MonoDomain *domain, gpointer *dummy)
5013 gboolean fresh_thread = FALSE;
5016 /* Happens when called from AOTed code which is only used in the root domain. */
5017 domain = mono_get_root_domain ();
5022 /* On coop, when we detached, we moved the thread from RUNNING->BLOCKING.
5023 * If we try to reattach we do a BLOCKING->RUNNING transition. If the thread
5024 * is fresh, mono_thread_attach() will do a STARTING->RUNNING transition so
5025 * we're only responsible for making the cookie. */
5026 if (mono_threads_is_coop_enabled ()) {
5027 MonoThreadInfo *info = mono_thread_info_current_unchecked ();
5028 fresh_thread = !info || !mono_thread_info_is_live (info);
5031 if (!mono_thread_internal_current ()) {
5032 mono_thread_attach_full (domain, FALSE);
5035 mono_thread_set_state (mono_thread_internal_current (), ThreadState_Background);
5038 orig = mono_domain_get ();
5040 mono_domain_set (domain, TRUE);
5042 if (!mono_threads_is_coop_enabled ())
5043 return orig != domain ? orig : NULL;
5047 /* mono_thread_attach put the thread in RUNNING mode from STARTING, but we need to
5048 * return the right cookie. */
5049 return mono_threads_enter_gc_unsafe_region_cookie ();
5052 /* thread state (BLOCKING|RUNNING) -> RUNNING */
5053 return mono_threads_enter_gc_unsafe_region (dummy);
5058 * mono_threads_detach_coop: called by native->managed wrappers
5061 * - @cookie: the original domain which needs to be restored, or NULL.
5065 * - @cookie: contains current MonoThreadInfo* if it was in BLOCKING mode, NULL otherwise
5066 * - @dummy: contains the original domain
5069 mono_threads_detach_coop (gpointer cookie, gpointer *dummy)
5071 MonoDomain *domain, *orig;
5073 if (!mono_threads_is_coop_enabled ()) {
5074 orig = (MonoDomain*) cookie;
5076 mono_domain_set (orig, TRUE);
5078 orig = (MonoDomain*) *dummy;
5080 domain = mono_domain_get ();
5083 /* it won't do anything if cookie is NULL
5084 * thread state RUNNING -> (RUNNING|BLOCKING) */
5085 mono_threads_exit_gc_unsafe_region (cookie, dummy);
5087 if (orig != domain) {
5089 mono_domain_unset ();
5091 mono_domain_set (orig, TRUE);
5097 mono_threads_begin_abort_protected_block (void)
5099 MonoInternalThread *thread;
5101 thread = mono_thread_internal_current ();
5102 ++thread->abort_protected_block_count;
5103 mono_memory_barrier ();
5107 mono_threads_end_abort_protected_block (void)
5109 MonoInternalThread *thread;
5111 thread = mono_thread_internal_current ();
5113 mono_memory_barrier ();
5114 --thread->abort_protected_block_count;
5118 mono_thread_try_resume_interruption (void)
5120 MonoInternalThread *thread;
5122 thread = mono_thread_internal_current ();
5123 if (thread->abort_protected_block_count || mono_get_eh_callbacks ()->mono_current_thread_has_handle_block_guard ())
5126 return mono_thread_resume_interruption ();
5130 /* Returns TRUE if the current thread is ready to be interrupted. */
5132 mono_threads_is_ready_to_be_interrupted (void)
5134 MonoInternalThread *thread;
5136 thread = mono_thread_internal_current ();
5137 LOCK_THREAD (thread);
5138 if (thread->state & (MonoThreadState)(ThreadState_StopRequested | ThreadState_SuspendRequested | ThreadState_AbortRequested)) {
5139 UNLOCK_THREAD (thread);
5143 if (thread->abort_protected_block_count || mono_get_eh_callbacks ()->mono_current_thread_has_handle_block_guard ()) {
5144 UNLOCK_THREAD (thread);
5148 UNLOCK_THREAD (thread);
5154 mono_thread_internal_describe (MonoInternalThread *internal, GString *text)
5156 g_string_append_printf (text, ", thread handle : %p", internal->handle);
5158 if (internal->thread_info) {
5159 g_string_append (text, ", state : ");
5160 mono_thread_info_describe_interrupt_token ((MonoThreadInfo*) internal->thread_info, text);
5163 if (internal->owned_mutexes) {
5166 g_string_append (text, ", owns : [");
5167 for (i = 0; i < internal->owned_mutexes->len; i++)
5168 g_string_append_printf (text, i == 0 ? "%p" : ", %p", g_ptr_array_index (internal->owned_mutexes, i));
5169 g_string_append (text, "]");
5174 mono_thread_internal_is_current (MonoInternalThread *internal)
5176 g_assert (internal);
5177 return mono_native_thread_id_equals (mono_native_thread_id_get (), MONO_UINT_TO_NATIVE_THREAD_ID (internal->tid));