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/w32handle.h>
48 #include <mono/metadata/w32event.h>
50 #include <mono/metadata/gc-internals.h>
51 #include <mono/metadata/reflection-internals.h>
52 #include <mono/metadata/abi-details.h>
58 #if defined(PLATFORM_ANDROID) && !defined(TARGET_ARM64) && !defined(TARGET_AMD64)
59 #define USE_TKILL_ON_ANDROID 1
62 #ifdef PLATFORM_ANDROID
65 #ifdef USE_TKILL_ON_ANDROID
66 extern int tkill (pid_t tid, int signal);
70 /*#define THREAD_DEBUG(a) do { a; } while (0)*/
71 #define THREAD_DEBUG(a)
72 /*#define THREAD_WAIT_DEBUG(a) do { a; } while (0)*/
73 #define THREAD_WAIT_DEBUG(a)
74 /*#define LIBGC_DEBUG(a) do { a; } while (0)*/
75 #define LIBGC_DEBUG(a)
77 #define SPIN_TRYLOCK(i) (InterlockedCompareExchange (&(i), 1, 0) == 0)
78 #define SPIN_LOCK(i) do { \
79 if (SPIN_TRYLOCK (i)) \
83 #define SPIN_UNLOCK(i) i = 0
85 #define LOCK_THREAD(thread) lock_thread((thread))
86 #define UNLOCK_THREAD(thread) unlock_thread((thread))
98 typedef struct _StaticDataFreeList StaticDataFreeList;
99 struct _StaticDataFreeList {
100 StaticDataFreeList *next;
108 StaticDataFreeList *freelist;
111 /* Number of cached culture objects in the MonoThread->cached_culture_info array
112 * (per-type): we use the first NUM entries for CultureInfo and the last for
113 * UICultureInfo. So the size of the array is really NUM_CACHED_CULTURES * 2.
115 #define NUM_CACHED_CULTURES 4
116 #define CULTURES_START_IDX 0
117 #define UICULTURES_START_IDX NUM_CACHED_CULTURES
119 /* Controls access to the 'threads' hash table */
120 static void mono_threads_lock (void);
121 static void mono_threads_unlock (void);
122 static MonoCoopMutex threads_mutex;
124 /* Controls access to the 'joinable_threads' hash table */
125 #define joinable_threads_lock() mono_os_mutex_lock (&joinable_threads_mutex)
126 #define joinable_threads_unlock() mono_os_mutex_unlock (&joinable_threads_mutex)
127 static mono_mutex_t joinable_threads_mutex;
129 /* Holds current status of static data heap */
130 static StaticDataInfo thread_static_info;
131 static StaticDataInfo context_static_info;
133 /* The hash of existing threads (key is thread ID, value is
134 * MonoInternalThread*) that need joining before exit
136 static MonoGHashTable *threads=NULL;
138 /* List of app context GC handles.
139 * Added to from ves_icall_System_Runtime_Remoting_Contexts_Context_RegisterContext ().
141 static GHashTable *contexts = NULL;
143 /* Cleanup queue for contexts. */
144 static MonoReferenceQueue *context_queue;
147 * Threads which are starting up and they are not in the 'threads' hash yet.
148 * When mono_thread_attach_internal is called for a thread, it will be removed from this hash table.
149 * Protected by mono_threads_lock ().
151 static MonoGHashTable *threads_starting_up = NULL;
153 /* The TLS key that holds the MonoObject assigned to each thread */
154 static MonoNativeTlsKey current_object_key;
157 /* Protected by the threads lock */
158 static GHashTable *joinable_threads;
159 static int joinable_thread_count;
161 #ifdef MONO_HAVE_FAST_TLS
162 /* we need to use both the Tls* functions and __thread because
163 * the gc needs to see all the threads
165 MONO_FAST_TLS_DECLARE(tls_current_object);
166 #define SET_CURRENT_OBJECT(x) do { \
167 MONO_FAST_TLS_SET (tls_current_object, x); \
168 mono_native_tls_set_value (current_object_key, x); \
170 #define GET_CURRENT_OBJECT() ((MonoInternalThread*) MONO_FAST_TLS_GET (tls_current_object))
172 #define SET_CURRENT_OBJECT(x) mono_native_tls_set_value (current_object_key, x)
173 #define GET_CURRENT_OBJECT() (MonoInternalThread*) mono_native_tls_get_value (current_object_key)
176 /* function called at thread start */
177 static MonoThreadStartCB mono_thread_start_cb = NULL;
179 /* function called at thread attach */
180 static MonoThreadAttachCB mono_thread_attach_cb = NULL;
182 /* function called at thread cleanup */
183 static MonoThreadCleanupFunc mono_thread_cleanup_fn = NULL;
185 /* The default stack size for each thread */
186 static guint32 default_stacksize = 0;
187 #define default_stacksize_for_thread(thread) ((thread)->stack_size? (thread)->stack_size: default_stacksize)
189 static void context_adjust_static_data (MonoAppContext *ctx);
190 static void mono_free_static_data (gpointer* static_data);
191 static void mono_init_static_data_info (StaticDataInfo *static_data);
192 static guint32 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align);
193 static gboolean mono_thread_resume (MonoInternalThread* thread);
194 static void async_abort_internal (MonoInternalThread *thread, gboolean install_async_abort);
195 static void self_abort_internal (MonoError *error);
196 static void async_suspend_internal (MonoInternalThread *thread, gboolean interrupt);
197 static void self_suspend_internal (void);
199 static MonoException* mono_thread_execute_interruption (void);
200 static void ref_stack_destroy (gpointer rs);
202 /* Spin lock for InterlockedXXX 64 bit functions */
203 #define mono_interlocked_lock() mono_os_mutex_lock (&interlocked_mutex)
204 #define mono_interlocked_unlock() mono_os_mutex_unlock (&interlocked_mutex)
205 static mono_mutex_t interlocked_mutex;
207 /* global count of thread interruptions requested */
208 static gint32 thread_interruption_requested = 0;
210 /* Event signaled when a thread changes its background mode */
211 static HANDLE background_change_event;
213 static gboolean shutting_down = FALSE;
215 static gint32 managed_thread_id_counter = 0;
217 /* Class lazy loading functions */
218 static GENERATE_GET_CLASS_WITH_CACHE (appdomain_unloaded_exception, System, AppDomainUnloadedException)
221 mono_threads_lock (void)
223 mono_locks_coop_acquire (&threads_mutex, ThreadsLock);
227 mono_threads_unlock (void)
229 mono_locks_coop_release (&threads_mutex, ThreadsLock);
234 get_next_managed_thread_id (void)
236 return InterlockedIncrement (&managed_thread_id_counter);
240 mono_thread_get_tls_key (void)
242 return current_object_key;
246 mono_thread_get_tls_offset (void)
251 if (current_object_key)
252 offset = current_object_key;
254 MONO_THREAD_VAR_OFFSET (tls_current_object,offset);
259 static inline MonoNativeThreadId
260 thread_get_tid (MonoInternalThread *thread)
262 /* We store the tid as a guint64 to keep the object layout constant between platforms */
263 return MONO_UINT_TO_NATIVE_THREAD_ID (thread->tid);
266 static void ensure_synch_cs_set (MonoInternalThread *thread)
268 MonoCoopMutex *synch_cs;
270 if (thread->synch_cs != NULL) {
274 synch_cs = g_new0 (MonoCoopMutex, 1);
275 mono_coop_mutex_init_recursive (synch_cs);
277 if (InterlockedCompareExchangePointer ((gpointer *)&thread->synch_cs,
278 synch_cs, NULL) != NULL) {
279 /* Another thread must have installed this CS */
280 mono_coop_mutex_destroy (synch_cs);
286 lock_thread (MonoInternalThread *thread)
288 if (!thread->synch_cs)
289 ensure_synch_cs_set (thread);
291 g_assert (thread->synch_cs);
293 mono_coop_mutex_lock (thread->synch_cs);
297 unlock_thread (MonoInternalThread *thread)
299 mono_coop_mutex_unlock (thread->synch_cs);
302 static inline gboolean
303 is_appdomainunloaded_exception (MonoClass *klass)
305 return klass == mono_class_get_appdomain_unloaded_exception_class ();
308 static inline gboolean
309 is_threadabort_exception (MonoClass *klass)
311 return klass == mono_defaults.threadabortexception_class;
315 * NOTE: this function can be called also for threads different from the current one:
316 * make sure no code called from it will ever assume it is run on the thread that is
317 * getting cleaned up.
319 static void thread_cleanup (MonoInternalThread *thread)
323 g_assert (thread != NULL);
325 if (thread->abort_state_handle) {
326 mono_gchandle_free (thread->abort_state_handle);
327 thread->abort_state_handle = 0;
329 thread->abort_exc = NULL;
330 thread->current_appcontext = NULL;
333 * This is necessary because otherwise we might have
334 * cross-domain references which will not get cleaned up when
335 * the target domain is unloaded.
337 if (thread->cached_culture_info) {
339 for (i = 0; i < NUM_CACHED_CULTURES * 2; ++i)
340 mono_array_set (thread->cached_culture_info, MonoObject*, i, NULL);
344 * thread->synch_cs can be NULL if this was called after
345 * ves_icall_System_Threading_InternalThread_Thread_free_internal.
346 * This can happen only during shutdown.
347 * The shutting_down flag is not always set, so we can't assert on it.
349 if (thread->synch_cs)
350 LOCK_THREAD (thread);
352 thread->state |= ThreadState_Stopped;
353 thread->state &= ~ThreadState_Background;
355 if (thread->synch_cs)
356 UNLOCK_THREAD (thread);
359 An interruption request has leaked to cleanup. Adjust the global counter.
361 This can happen is the abort source thread finds the abortee (this) thread
362 in unmanaged code. If this thread never trips back to managed code or check
363 the local flag it will be left set and positively unbalance the global counter.
365 Leaving the counter unbalanced will cause a performance degradation since all threads
366 will now keep checking their local flags all the time.
368 if (InterlockedExchange (&thread->interruption_requested, 0))
369 InterlockedDecrement (&thread_interruption_requested);
371 mono_threads_lock ();
375 } else if (mono_g_hash_table_lookup (threads, (gpointer)thread->tid) != thread) {
376 /* We have to check whether the thread object for the
377 * tid is still the same in the table because the
378 * thread might have been destroyed and the tid reused
379 * in the meantime, in which case the tid would be in
380 * the table, but with another thread object.
384 mono_g_hash_table_remove (threads, (gpointer)thread->tid);
388 mono_threads_unlock ();
390 /* Don't close the handle here, wait for the object finalizer
391 * to do it. Otherwise, the following race condition applies:
393 * 1) Thread exits (and thread_cleanup() closes the handle)
395 * 2) Some other handle is reassigned the same slot
397 * 3) Another thread tries to join the first thread, and
398 * blocks waiting for the reassigned handle to be signalled
399 * (which might never happen). This is possible, because the
400 * thread calling Join() still has a reference to the first
404 /* if the thread is not in the hash it has been removed already */
406 if (thread == mono_thread_internal_current ()) {
407 mono_domain_unset ();
408 mono_memory_barrier ();
410 if (mono_thread_cleanup_fn)
411 mono_thread_cleanup_fn (thread_get_tid (thread));
414 mono_release_type_locks (thread);
416 /* Can happen when we attach the profiler helper thread in order to heapshot. */
417 if (!mono_thread_info_lookup (MONO_UINT_TO_NATIVE_THREAD_ID (thread->tid))->tools_thread)
418 mono_profiler_thread_end (thread->tid);
420 mono_hazard_pointer_clear (mono_hazard_pointer_get (), 1);
422 if (thread == mono_thread_internal_current ()) {
424 * This will signal async signal handlers that the thread has exited.
425 * The profiler callback needs this to be set, so it cannot be done earlier.
427 mono_domain_unset ();
428 mono_memory_barrier ();
431 if (thread == mono_thread_internal_current ())
432 mono_thread_pop_appdomain_ref ();
434 thread->cached_culture_info = NULL;
436 mono_free_static_data (thread->static_data);
437 thread->static_data = NULL;
438 ref_stack_destroy (thread->appdomain_refs);
439 thread->appdomain_refs = NULL;
441 if (mono_thread_cleanup_fn)
442 mono_thread_cleanup_fn (thread_get_tid (thread));
444 if (mono_gc_is_moving ()) {
445 MONO_GC_UNREGISTER_ROOT (thread->thread_pinning_ref);
446 thread->thread_pinning_ref = NULL;
452 * A special static data offset (guint32) consists of 3 parts:
454 * [0] 6-bit index into the array of chunks.
455 * [6] 25-bit offset into the array.
456 * [31] Bit indicating thread or context static.
461 #if G_BYTE_ORDER != G_LITTLE_ENDIAN
472 } SpecialStaticOffset;
474 #define SPECIAL_STATIC_OFFSET_TYPE_THREAD 0
475 #define SPECIAL_STATIC_OFFSET_TYPE_CONTEXT 1
477 #define MAKE_SPECIAL_STATIC_OFFSET(index, offset, type) \
478 ((SpecialStaticOffset) { .fields = { (index), (offset), (type) } }.raw)
479 #define ACCESS_SPECIAL_STATIC_OFFSET(x,f) \
480 (((SpecialStaticOffset *) &(x))->fields.f)
483 get_thread_static_data (MonoInternalThread *thread, guint32 offset)
485 g_assert (ACCESS_SPECIAL_STATIC_OFFSET (offset, type) == SPECIAL_STATIC_OFFSET_TYPE_THREAD);
487 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
488 int off = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
490 return ((char *) thread->static_data [idx]) + off;
494 get_context_static_data (MonoAppContext *ctx, guint32 offset)
496 g_assert (ACCESS_SPECIAL_STATIC_OFFSET (offset, type) == SPECIAL_STATIC_OFFSET_TYPE_CONTEXT);
498 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
499 int off = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
501 return ((char *) ctx->static_data [idx]) + off;
505 get_current_thread_ptr_for_domain (MonoDomain *domain, MonoInternalThread *thread)
507 static MonoClassField *current_thread_field = NULL;
511 if (!current_thread_field) {
512 current_thread_field = mono_class_get_field_from_name (mono_defaults.thread_class, "current_thread");
513 g_assert (current_thread_field);
516 mono_class_vtable (domain, mono_defaults.thread_class);
517 mono_domain_lock (domain);
518 offset = GPOINTER_TO_UINT (g_hash_table_lookup (domain->special_static_fields, current_thread_field));
519 mono_domain_unlock (domain);
522 return (MonoThread **)get_thread_static_data (thread, offset);
526 set_current_thread_for_domain (MonoDomain *domain, MonoInternalThread *thread, MonoThread *current)
528 MonoThread **current_thread_ptr = get_current_thread_ptr_for_domain (domain, thread);
530 g_assert (current->obj.vtable->domain == domain);
532 g_assert (!*current_thread_ptr);
533 *current_thread_ptr = current;
537 create_thread_object (MonoDomain *domain)
540 MonoVTable *vt = mono_class_vtable (domain, mono_defaults.thread_class);
541 MonoThread *t = (MonoThread*)mono_object_new_mature (vt, &error);
542 /* only possible failure mode is OOM, from which we don't expect to recover. */
543 mono_error_assert_ok (&error);
548 new_thread_with_internal (MonoDomain *domain, MonoInternalThread *internal)
552 thread = create_thread_object (domain);
554 MONO_OBJECT_SETREF (thread, internal_thread, internal);
559 static MonoInternalThread*
560 create_internal_thread (void)
563 MonoInternalThread *thread;
566 vt = mono_class_vtable (mono_get_root_domain (), mono_defaults.internal_thread_class);
567 thread = (MonoInternalThread*) mono_object_new_mature (vt, &error);
568 /* only possible failure mode is OOM, from which we don't exect to recover */
569 mono_error_assert_ok (&error);
571 thread->synch_cs = g_new0 (MonoCoopMutex, 1);
572 mono_coop_mutex_init_recursive (thread->synch_cs);
574 thread->apartment_state = ThreadApartmentState_Unknown;
575 thread->managed_id = get_next_managed_thread_id ();
576 if (mono_gc_is_moving ()) {
577 thread->thread_pinning_ref = thread;
578 MONO_GC_REGISTER_ROOT_PINNING (thread->thread_pinning_ref, MONO_ROOT_SOURCE_THREADING, "thread pinning reference");
581 thread->priority = MONO_THREAD_PRIORITY_NORMAL;
587 mono_thread_internal_set_priority (MonoInternalThread *internal, MonoThreadPriority priority)
590 g_assert (internal->handle);
592 g_assert (priority >= MONO_THREAD_PRIORITY_LOWEST);
593 g_assert (priority <= MONO_THREAD_PRIORITY_HIGHEST);
594 g_assert (MONO_THREAD_PRIORITY_LOWEST < MONO_THREAD_PRIORITY_HIGHEST);
599 res = SetThreadPriority (internal->handle, priority - 2);
601 g_error ("%s: SetThreadPriority failed, error %d", __func__, GetLastError ());
602 #else /* HOST_WIN32 */
605 struct sched_param param;
608 tid = thread_get_tid (internal);
610 res = pthread_getschedparam (tid, &policy, ¶m);
612 g_error ("%s: pthread_getschedparam failed, error: \"%s\" (%d)", __func__, g_strerror (res), res);
614 #ifdef _POSIX_PRIORITY_SCHEDULING
617 /* Necessary to get valid priority range */
619 min = sched_get_priority_min (policy);
620 max = sched_get_priority_max (policy);
622 if (max > 0 && min >= 0 && max > min) {
623 double srange, drange, sposition, dposition;
624 srange = MONO_THREAD_PRIORITY_HIGHEST - MONO_THREAD_PRIORITY_LOWEST;
626 sposition = priority - MONO_THREAD_PRIORITY_LOWEST;
627 dposition = (sposition / srange) * drange;
628 param.sched_priority = (int)(dposition + min);
635 param.sched_priority = 50;
641 param.sched_priority = 0;
644 g_error ("%s: unknown policy %d", __func__, policy);
648 res = pthread_setschedparam (tid, policy, ¶m);
651 g_warning ("%s: pthread_setschedparam failed, error: \"%s\" (%d)", __func__, g_strerror (res), res);
654 g_error ("%s: pthread_setschedparam failed, error: \"%s\" (%d)", __func__, g_strerror (res), res);
656 #endif /* HOST_WIN32 */
660 mono_alloc_static_data (gpointer **static_data_ptr, guint32 offset, gboolean threadlocal);
663 mono_thread_attach_internal (MonoThread *thread, gboolean force_attach, gboolean force_domain, gsize *stack_ptr)
665 MonoThreadInfo *info;
666 MonoInternalThread *internal;
667 MonoDomain *domain, *root_domain;
671 info = mono_thread_info_current ();
673 internal = thread->internal_thread;
674 internal->handle = mono_thread_info_duplicate_handle (info);
675 internal->tid = MONO_NATIVE_THREAD_ID_TO_UINT (mono_native_thread_id_get ());
676 internal->thread_info = info;
677 internal->small_id = info->small_id;
678 internal->stack_ptr = stack_ptr;
680 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Setting current_object_key to %p", __func__, mono_native_thread_id_get (), internal));
682 SET_CURRENT_OBJECT (internal);
684 domain = mono_object_domain (thread);
686 mono_thread_push_appdomain_ref (domain);
687 if (!mono_domain_set (domain, force_domain)) {
688 mono_thread_pop_appdomain_ref ();
692 mono_threads_lock ();
694 if (threads_starting_up)
695 mono_g_hash_table_remove (threads_starting_up, thread);
697 if (shutting_down && !force_attach) {
698 mono_threads_unlock ();
703 MONO_GC_REGISTER_ROOT_FIXED (threads, MONO_ROOT_SOURCE_THREADING, "threads table");
704 threads = mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_VALUE_GC, MONO_ROOT_SOURCE_THREADING, "threads table");
707 /* We don't need to duplicate thread->handle, because it is
708 * only closed when the thread object is finalized by the GC. */
709 mono_g_hash_table_insert (threads, (gpointer)(gsize)(internal->tid), internal);
711 /* We have to do this here because mono_thread_start_cb
712 * requires that root_domain_thread is set up. */
713 if (thread_static_info.offset || thread_static_info.idx > 0) {
714 /* get the current allocated size */
715 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (thread_static_info.idx, thread_static_info.offset, 0);
716 mono_alloc_static_data (&internal->static_data, offset, TRUE);
719 mono_threads_unlock ();
721 root_domain = mono_get_root_domain ();
723 g_assert (!internal->root_domain_thread);
724 if (domain != root_domain)
725 MONO_OBJECT_SETREF (internal, root_domain_thread, new_thread_with_internal (root_domain, internal));
727 MONO_OBJECT_SETREF (internal, root_domain_thread, thread);
729 if (domain != root_domain)
730 set_current_thread_for_domain (root_domain, internal, internal->root_domain_thread);
732 set_current_thread_for_domain (domain, internal, thread);
734 THREAD_DEBUG (g_message ("%s: Attached thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, internal->tid, internal->handle));
742 MonoObject *start_delegate;
743 MonoObject *start_delegate_arg;
744 MonoThreadStart start_func;
745 gpointer start_func_arg;
747 MonoCoopSem registered;
750 static guint32 WINAPI start_wrapper_internal(StartInfo *start_info, gsize *stack_ptr)
753 MonoThreadStart start_func;
754 void *start_func_arg;
757 * We don't create a local to hold start_info->thread, so hopefully it won't get pinned during a
761 MonoInternalThread *internal;
762 MonoObject *start_delegate;
763 MonoObject *start_delegate_arg;
766 thread = start_info->thread;
767 internal = thread->internal_thread;
768 domain = mono_object_domain (start_info->thread);
770 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper", __func__, mono_native_thread_id_get ()));
772 if (!mono_thread_attach_internal (thread, FALSE, FALSE, stack_ptr)) {
773 start_info->failed = TRUE;
775 mono_coop_sem_post (&start_info->registered);
777 if (InterlockedDecrement (&start_info->ref) == 0) {
778 mono_coop_sem_destroy (&start_info->registered);
785 mono_thread_internal_set_priority (internal, internal->priority);
789 start_delegate = start_info->start_delegate;
790 start_delegate_arg = start_info->start_delegate_arg;
791 start_func = start_info->start_func;
792 start_func_arg = start_info->start_func_arg;
794 /* This MUST be called before any managed code can be
795 * executed, as it calls the callback function that (for the
796 * jit) sets the lmf marker.
799 if (mono_thread_start_cb)
800 mono_thread_start_cb (tid, stack_ptr, start_func);
802 /* On 2.0 profile (and higher), set explicitly since state might have been
804 if (internal->apartment_state == ThreadApartmentState_Unknown)
805 internal->apartment_state = ThreadApartmentState_MTA;
807 mono_thread_init_apartment_state ();
809 /* Let the thread that called Start() know we're ready */
810 mono_coop_sem_post (&start_info->registered);
812 if (InterlockedDecrement (&start_info->ref) == 0) {
813 mono_coop_sem_destroy (&start_info->registered);
817 /* start_info is not valid anymore */
821 * Call this after calling start_notify, since the profiler callback might want
822 * to lock the thread, and the lock is held by thread_start () which waits for
825 mono_profiler_thread_start (tid);
827 /* if the name was set before starting, we didn't invoke the profiler callback */
828 if (internal->name) {
829 char *tname = g_utf16_to_utf8 (internal->name, internal->name_len, NULL, NULL, NULL);
830 mono_profiler_thread_name (internal->tid, tname);
831 mono_native_thread_set_name (MONO_UINT_TO_NATIVE_THREAD_ID (internal->tid), tname);
835 /* start_func is set only for unmanaged start functions */
837 start_func (start_func_arg);
841 g_assert (start_delegate != NULL);
843 /* we may want to handle the exception here. See comment below on unhandled exceptions */
844 args [0] = (gpointer) start_delegate_arg;
845 mono_runtime_delegate_invoke_checked (start_delegate, args, &error);
847 if (!mono_error_ok (&error)) {
848 MonoException *ex = mono_error_convert_to_exception (&error);
850 g_assert (ex != NULL);
851 MonoClass *klass = mono_object_get_class (&ex->object);
852 if ((mono_runtime_unhandled_exception_policy_get () != MONO_UNHANDLED_POLICY_LEGACY) &&
853 !is_threadabort_exception (klass)) {
854 mono_unhandled_exception (&ex->object);
855 mono_invoke_unhandled_exception_hook (&ex->object);
856 g_assert_not_reached ();
859 mono_error_cleanup (&error);
863 /* If the thread calls ExitThread at all, this remaining code
864 * will not be executed, but the main thread will eventually
865 * call thread_cleanup() on this thread's behalf.
868 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper terminating", __func__, mono_native_thread_id_get ()));
870 /* Do any cleanup needed for apartment state. This
871 * cannot be done in thread_cleanup since thread_cleanup could be
872 * called for a thread other than the current thread.
873 * mono_thread_cleanup_apartment_state cleans up apartment
874 * for the current thead */
875 mono_thread_cleanup_apartment_state ();
877 mono_thread_detach_internal (internal);
884 static gsize WINAPI start_wrapper(void *data)
886 volatile gsize dummy;
888 /* Avoid scanning the frames above this frame during a GC */
889 mono_gc_set_stack_end ((void*)&dummy);
891 return start_wrapper_internal ((StartInfo*) data, (gsize*) &dummy);
897 * Common thread creation code.
898 * LOCKING: Acquires the threads lock.
901 create_thread (MonoThread *thread, MonoInternalThread *internal, MonoObject *start_delegate, MonoThreadStart start_func, gpointer start_func_arg,
902 gboolean threadpool_thread, guint32 stack_size, MonoError *error)
904 StartInfo *start_info = NULL;
905 HANDLE thread_handle;
906 MonoNativeThreadId tid;
910 g_assert (!start_func && !start_func_arg);
912 g_assert (!start_delegate);
915 * Join joinable threads to prevent running out of threads since the finalizer
916 * thread might be blocked/backlogged.
918 mono_threads_join_threads ();
920 mono_error_init (error);
922 mono_threads_lock ();
924 mono_threads_unlock ();
927 if (threads_starting_up == NULL) {
928 MONO_GC_REGISTER_ROOT_FIXED (threads_starting_up, MONO_ROOT_SOURCE_THREADING, "starting threads table");
929 threads_starting_up = mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_KEY_VALUE_GC, MONO_ROOT_SOURCE_THREADING, "starting threads table");
931 mono_g_hash_table_insert (threads_starting_up, thread, thread);
932 mono_threads_unlock ();
934 internal->threadpool_thread = threadpool_thread;
935 if (threadpool_thread)
936 mono_thread_set_state (internal, ThreadState_Background);
938 start_info = g_new0 (StartInfo, 1);
940 start_info->thread = thread;
941 start_info->start_delegate = start_delegate;
942 start_info->start_delegate_arg = thread->start_obj;
943 start_info->start_func = start_func;
944 start_info->start_func_arg = start_func_arg;
945 start_info->failed = FALSE;
946 mono_coop_sem_init (&start_info->registered, 0);
949 stack_size = default_stacksize_for_thread (internal);
951 thread_handle = mono_threads_create_thread (start_wrapper, start_info, stack_size, &tid);
953 if (thread_handle == NULL) {
954 /* The thread couldn't be created, so set an exception */
955 mono_threads_lock ();
956 mono_g_hash_table_remove (threads_starting_up, thread);
957 mono_threads_unlock ();
958 mono_error_set_execution_engine (error, "Couldn't create thread. Error 0x%x", GetLastError());
959 /* ref is not going to be decremented in start_wrapper_internal */
960 InterlockedDecrement (&start_info->ref);
965 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Launching thread %p (%"G_GSIZE_FORMAT")", __func__, mono_native_thread_id_get (), internal, (gsize)internal->tid));
968 * Wait for the thread to set up its TLS data etc, so
969 * theres no potential race condition if someone tries
970 * to look up the data believing the thread has
974 mono_coop_sem_wait (&start_info->registered, MONO_SEM_FLAGS_NONE);
976 mono_threads_close_thread_handle (thread_handle);
978 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));
980 ret = !start_info->failed;
983 if (InterlockedDecrement (&start_info->ref) == 0) {
984 mono_coop_sem_destroy (&start_info->registered);
991 void mono_thread_new_init (intptr_t tid, gpointer stack_start, gpointer func)
993 if (mono_thread_start_cb) {
994 mono_thread_start_cb (tid, stack_start, func);
998 void mono_threads_set_default_stacksize (guint32 stacksize)
1000 default_stacksize = stacksize;
1003 guint32 mono_threads_get_default_stacksize (void)
1005 return default_stacksize;
1009 * mono_thread_create_internal:
1011 * ARG should not be a GC reference.
1014 mono_thread_create_internal (MonoDomain *domain, gpointer func, gpointer arg, gboolean threadpool_thread, guint32 stack_size, MonoError *error)
1017 MonoInternalThread *internal;
1020 mono_error_init (error);
1022 thread = create_thread_object (domain);
1024 internal = create_internal_thread ();
1026 MONO_OBJECT_SETREF (thread, internal_thread, internal);
1028 LOCK_THREAD (internal);
1030 res = create_thread (thread, internal, NULL, (MonoThreadStart) func, arg, threadpool_thread, stack_size, error);
1031 return_val_if_nok (error, NULL);
1033 UNLOCK_THREAD (internal);
1039 mono_thread_create (MonoDomain *domain, gpointer func, gpointer arg)
1042 if (!mono_thread_create_checked (domain, func, arg, &error))
1043 mono_error_cleanup (&error);
1047 mono_thread_create_checked (MonoDomain *domain, gpointer func, gpointer arg, MonoError *error)
1049 return (NULL != mono_thread_create_internal (domain, func, arg, FALSE, 0, error));
1053 mono_thread_attach (MonoDomain *domain)
1055 MonoThread *thread = mono_thread_attach_full (domain, FALSE);
1061 mono_thread_attach_full (MonoDomain *domain, gboolean force_attach)
1063 MonoInternalThread *internal;
1065 MonoNativeThreadId tid;
1068 if (mono_thread_internal_current_is_attached ()) {
1069 if (domain != mono_domain_get ())
1070 mono_domain_set (domain, TRUE);
1071 /* Already attached */
1072 return mono_thread_current ();
1075 if (!mono_gc_register_thread (&domain)) {
1076 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 ());
1079 tid=mono_native_thread_id_get ();
1081 internal = create_internal_thread ();
1083 thread = new_thread_with_internal (domain, internal);
1085 if (!mono_thread_attach_internal (thread, force_attach, TRUE, &stack_ptr)) {
1086 /* Mono is shutting down, so just wait for the end */
1088 mono_thread_info_sleep (10000, NULL);
1091 THREAD_DEBUG (g_message ("%s: Attached thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, internal->handle));
1093 if (mono_thread_attach_cb) {
1097 mono_thread_info_get_stack_bounds (&staddr, &stsize);
1100 mono_thread_attach_cb (MONO_NATIVE_THREAD_ID_TO_UINT (tid), &stack_ptr);
1102 mono_thread_attach_cb (MONO_NATIVE_THREAD_ID_TO_UINT (tid), staddr + stsize);
1105 /* Can happen when we attach the profiler helper thread in order to heapshot. */
1106 if (!mono_thread_info_current ()->tools_thread)
1107 // FIXME: Need a separate callback
1108 mono_profiler_thread_start (MONO_NATIVE_THREAD_ID_TO_UINT (tid));
1114 mono_thread_detach_internal (MonoInternalThread *thread)
1116 g_return_if_fail (thread != NULL);
1118 THREAD_DEBUG (g_message ("%s: mono_thread_detach for %p (%"G_GSIZE_FORMAT")", __func__, thread, (gsize)thread->tid));
1120 thread_cleanup (thread);
1122 SET_CURRENT_OBJECT (NULL);
1123 mono_domain_unset ();
1125 /* Don't need to close the handle to this thread, even though we took a
1126 * reference in mono_thread_attach (), because the GC will do it
1127 * when the Thread object is finalised.
1132 mono_thread_detach (MonoThread *thread)
1135 mono_thread_detach_internal (thread->internal_thread);
1139 * mono_thread_detach_if_exiting:
1141 * Detach the current thread from the runtime if it is exiting, i.e. it is running pthread dtors.
1142 * This should be used at the end of embedding code which calls into managed code, and which
1143 * can be called from pthread dtors, like dealloc: implementations in objective-c.
1146 mono_thread_detach_if_exiting (void)
1148 if (mono_thread_info_is_exiting ()) {
1149 MonoInternalThread *thread;
1151 thread = mono_thread_internal_current ();
1153 mono_thread_detach_internal (thread);
1154 mono_thread_info_detach ();
1162 mono_thread_internal_current_is_attached (void)
1164 MonoInternalThread *internal;
1166 internal = GET_CURRENT_OBJECT ();
1174 mono_thread_exit (void)
1176 MonoInternalThread *thread = mono_thread_internal_current ();
1178 THREAD_DEBUG (g_message ("%s: mono_thread_exit for %p (%"G_GSIZE_FORMAT")", __func__, thread, (gsize)thread->tid));
1180 mono_thread_detach_internal (thread);
1182 /* we could add a callback here for embedders to use. */
1183 if (mono_thread_get_main () && (thread == mono_thread_get_main ()->internal_thread))
1184 exit (mono_environment_exitcode_get ());
1186 mono_thread_info_exit ();
1190 ves_icall_System_Threading_Thread_ConstructInternalThread (MonoThread *this_obj)
1192 MonoInternalThread *internal;
1194 internal = create_internal_thread ();
1196 internal->state = ThreadState_Unstarted;
1198 InterlockedCompareExchangePointer ((volatile gpointer *)&this_obj->internal_thread, internal, NULL);
1202 ves_icall_System_Threading_Thread_Thread_internal (MonoThread *this_obj,
1206 MonoInternalThread *internal;
1209 THREAD_DEBUG (g_message("%s: Trying to start a new thread: this (%p) start (%p)", __func__, this_obj, start));
1211 if (!this_obj->internal_thread)
1212 ves_icall_System_Threading_Thread_ConstructInternalThread (this_obj);
1213 internal = this_obj->internal_thread;
1215 LOCK_THREAD (internal);
1217 if ((internal->state & ThreadState_Unstarted) == 0) {
1218 UNLOCK_THREAD (internal);
1219 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has already been started."));
1223 if ((internal->state & ThreadState_Aborted) != 0) {
1224 UNLOCK_THREAD (internal);
1228 res = create_thread (this_obj, internal, start, NULL, NULL, FALSE, 0, &error);
1230 mono_error_cleanup (&error);
1231 UNLOCK_THREAD (internal);
1235 internal->state &= ~ThreadState_Unstarted;
1237 THREAD_DEBUG (g_message ("%s: Started thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread));
1239 UNLOCK_THREAD (internal);
1240 return internal->handle;
1244 * This is called from the finalizer of the internal thread object.
1247 ves_icall_System_Threading_InternalThread_Thread_free_internal (MonoInternalThread *this_obj, HANDLE thread)
1249 THREAD_DEBUG (g_message ("%s: Closing thread %p, handle %p", __func__, this, thread));
1252 * Since threads keep a reference to their thread object while running, by the time this function is called,
1253 * the thread has already exited/detached, i.e. thread_cleanup () has ran. The exception is during shutdown,
1254 * when thread_cleanup () can be called after this.
1257 mono_threads_close_thread_handle (thread);
1259 if (this_obj->synch_cs) {
1260 MonoCoopMutex *synch_cs = this_obj->synch_cs;
1261 this_obj->synch_cs = NULL;
1262 mono_coop_mutex_destroy (synch_cs);
1266 if (this_obj->name) {
1267 void *name = this_obj->name;
1268 this_obj->name = NULL;
1274 ves_icall_System_Threading_Thread_Sleep_internal(gint32 ms)
1277 MonoInternalThread *thread = mono_thread_internal_current ();
1279 THREAD_DEBUG (g_message ("%s: Sleeping for %d ms", __func__, ms));
1281 if (mono_thread_current_check_pending_interrupt ())
1285 gboolean alerted = FALSE;
1287 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1289 res = mono_thread_info_sleep (ms, &alerted);
1291 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1294 MonoException* exc = mono_thread_execute_interruption ();
1296 mono_raise_exception (exc);
1308 void ves_icall_System_Threading_Thread_SpinWait_nop (void)
1313 ves_icall_System_Threading_Thread_GetDomainID (void)
1315 return mono_domain_get()->domain_id;
1319 ves_icall_System_Threading_Thread_Yield (void)
1321 return mono_thread_info_yield ();
1325 * mono_thread_get_name:
1327 * Return the name of the thread. NAME_LEN is set to the length of the name.
1328 * Return NULL if the thread has no name. The returned memory is owned by the
1332 mono_thread_get_name (MonoInternalThread *this_obj, guint32 *name_len)
1336 LOCK_THREAD (this_obj);
1338 if (!this_obj->name) {
1342 *name_len = this_obj->name_len;
1343 res = g_new (gunichar2, this_obj->name_len);
1344 memcpy (res, this_obj->name, sizeof (gunichar2) * this_obj->name_len);
1347 UNLOCK_THREAD (this_obj);
1353 * mono_thread_get_name_utf8:
1355 * Return the name of the thread in UTF-8.
1356 * Return NULL if the thread has no name.
1357 * The returned memory is owned by the caller.
1360 mono_thread_get_name_utf8 (MonoThread *thread)
1365 MonoInternalThread *internal = thread->internal_thread;
1366 if (internal == NULL)
1369 LOCK_THREAD (internal);
1371 char *tname = g_utf16_to_utf8 (internal->name, internal->name_len, NULL, NULL, NULL);
1373 UNLOCK_THREAD (internal);
1379 * mono_thread_get_managed_id:
1381 * Return the Thread.ManagedThreadId value of `thread`.
1382 * Returns -1 if `thread` is NULL.
1385 mono_thread_get_managed_id (MonoThread *thread)
1390 MonoInternalThread *internal = thread->internal_thread;
1391 if (internal == NULL)
1394 int32_t id = internal->managed_id;
1400 ves_icall_System_Threading_Thread_GetName_internal (MonoInternalThread *this_obj)
1405 mono_error_init (&error);
1407 LOCK_THREAD (this_obj);
1409 if (!this_obj->name)
1412 str = mono_string_new_utf16_checked (mono_domain_get (), this_obj->name, this_obj->name_len, &error);
1414 UNLOCK_THREAD (this_obj);
1416 if (mono_error_set_pending_exception (&error))
1423 mono_thread_set_name_internal (MonoInternalThread *this_obj, MonoString *name, gboolean permanent, MonoError *error)
1425 LOCK_THREAD (this_obj);
1427 mono_error_init (error);
1429 if ((this_obj->flags & MONO_THREAD_FLAG_NAME_SET)) {
1430 UNLOCK_THREAD (this_obj);
1432 mono_error_set_invalid_operation (error, "Thread.Name can only be set once.");
1435 if (this_obj->name) {
1436 g_free (this_obj->name);
1437 this_obj->name_len = 0;
1440 this_obj->name = g_new (gunichar2, mono_string_length (name));
1441 memcpy (this_obj->name, mono_string_chars (name), mono_string_length (name) * 2);
1442 this_obj->name_len = mono_string_length (name);
1445 this_obj->flags |= MONO_THREAD_FLAG_NAME_SET;
1448 this_obj->name = NULL;
1451 UNLOCK_THREAD (this_obj);
1453 if (this_obj->name && this_obj->tid) {
1454 char *tname = mono_string_to_utf8_checked (name, error);
1455 return_if_nok (error);
1456 mono_profiler_thread_name (this_obj->tid, tname);
1457 mono_native_thread_set_name (thread_get_tid (this_obj), tname);
1463 ves_icall_System_Threading_Thread_SetName_internal (MonoInternalThread *this_obj, MonoString *name)
1466 mono_thread_set_name_internal (this_obj, name, TRUE, &error);
1467 mono_error_set_pending_exception (&error);
1471 * ves_icall_System_Threading_Thread_GetPriority_internal:
1472 * @param this_obj: The MonoInternalThread on which to operate.
1474 * Gets the priority of the given thread.
1475 * @return: The priority of the given thread.
1478 ves_icall_System_Threading_Thread_GetPriority (MonoThread *this_obj)
1481 MonoInternalThread *internal = this_obj->internal_thread;
1483 LOCK_THREAD (internal);
1484 priority = internal->priority;
1485 UNLOCK_THREAD (internal);
1491 * ves_icall_System_Threading_Thread_SetPriority_internal:
1492 * @param this_obj: The MonoInternalThread on which to operate.
1493 * @param priority: The priority to set.
1495 * Sets the priority of the given thread.
1498 ves_icall_System_Threading_Thread_SetPriority (MonoThread *this_obj, int priority)
1500 MonoInternalThread *internal = this_obj->internal_thread;
1502 LOCK_THREAD (internal);
1503 internal->priority = priority;
1504 if (internal->handle != NULL)
1505 mono_thread_internal_set_priority (internal, priority);
1506 UNLOCK_THREAD (internal);
1509 /* If the array is already in the requested domain, we just return it,
1510 otherwise we return a copy in that domain. */
1512 byte_array_to_domain (MonoArray *arr, MonoDomain *domain, MonoError *error)
1516 mono_error_init (error);
1520 if (mono_object_domain (arr) == domain)
1523 copy = mono_array_new_checked (domain, mono_defaults.byte_class, arr->max_length, error);
1524 memmove (mono_array_addr (copy, guint8, 0), mono_array_addr (arr, guint8, 0), arr->max_length);
1529 ves_icall_System_Threading_Thread_ByteArrayToRootDomain (MonoArray *arr)
1532 MonoArray *result = byte_array_to_domain (arr, mono_get_root_domain (), &error);
1533 mono_error_set_pending_exception (&error);
1538 ves_icall_System_Threading_Thread_ByteArrayToCurrentDomain (MonoArray *arr)
1541 MonoArray *result = byte_array_to_domain (arr, mono_domain_get (), &error);
1542 mono_error_set_pending_exception (&error);
1547 mono_thread_current (void)
1549 MonoDomain *domain = mono_domain_get ();
1550 MonoInternalThread *internal = mono_thread_internal_current ();
1551 MonoThread **current_thread_ptr;
1553 g_assert (internal);
1554 current_thread_ptr = get_current_thread_ptr_for_domain (domain, internal);
1556 if (!*current_thread_ptr) {
1557 g_assert (domain != mono_get_root_domain ());
1558 *current_thread_ptr = new_thread_with_internal (domain, internal);
1560 return *current_thread_ptr;
1563 /* Return the thread object belonging to INTERNAL in the current domain */
1565 mono_thread_current_for_thread (MonoInternalThread *internal)
1567 MonoDomain *domain = mono_domain_get ();
1568 MonoThread **current_thread_ptr;
1570 g_assert (internal);
1571 current_thread_ptr = get_current_thread_ptr_for_domain (domain, internal);
1573 if (!*current_thread_ptr) {
1574 g_assert (domain != mono_get_root_domain ());
1575 *current_thread_ptr = new_thread_with_internal (domain, internal);
1577 return *current_thread_ptr;
1581 mono_thread_internal_current (void)
1583 MonoInternalThread *res = GET_CURRENT_OBJECT ();
1584 THREAD_DEBUG (g_message ("%s: returning %p", __func__, res));
1589 ves_icall_System_Threading_Thread_Join_internal(MonoThread *this_obj, int ms)
1591 MonoInternalThread *thread = this_obj->internal_thread;
1592 HANDLE handle = thread->handle;
1593 MonoInternalThread *cur_thread = mono_thread_internal_current ();
1596 if (mono_thread_current_check_pending_interrupt ())
1599 LOCK_THREAD (thread);
1601 if ((thread->state & ThreadState_Unstarted) != 0) {
1602 UNLOCK_THREAD (thread);
1604 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started."));
1608 UNLOCK_THREAD (thread);
1613 THREAD_DEBUG (g_message ("%s: joining thread handle %p, %d ms", __func__, handle, ms));
1615 mono_thread_set_state (cur_thread, ThreadState_WaitSleepJoin);
1618 ret=WaitForSingleObjectEx (handle, ms, TRUE);
1621 mono_thread_clr_state (cur_thread, ThreadState_WaitSleepJoin);
1623 if(ret==WAIT_OBJECT_0) {
1624 THREAD_DEBUG (g_message ("%s: join successful", __func__));
1629 THREAD_DEBUG (g_message ("%s: join failed", __func__));
1634 #define MANAGED_WAIT_FAILED 0x7fffffff
1637 map_native_wait_result_to_managed (gint32 val)
1639 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1640 return val == WAIT_FAILED ? MANAGED_WAIT_FAILED : val;
1644 mono_wait_uninterrupted (MonoInternalThread *thread, guint32 numhandles, gpointer *handles, gboolean waitall, gint32 ms, MonoError *error)
1652 mono_error_init (error);
1654 start = (ms == -1) ? 0 : mono_100ns_ticks ();
1657 if (numhandles != 1)
1658 ret = WaitForMultipleObjectsEx (numhandles, handles, waitall, wait, TRUE);
1660 ret = WaitForSingleObjectEx (handles [0], ms, TRUE);
1663 if (ret != WAIT_IO_COMPLETION)
1666 exc = mono_thread_execute_interruption ();
1668 mono_error_set_exception_instance (error, exc);
1675 /* Re-calculate ms according to the time passed */
1676 diff_ms = (gint32)((mono_100ns_ticks () - start) / 10000);
1677 if (diff_ms >= ms) {
1681 wait = ms - diff_ms;
1687 gint32 ves_icall_System_Threading_WaitHandle_WaitAll_internal(MonoArray *mono_handles, gint32 ms)
1694 MonoObject *waitHandle;
1695 MonoInternalThread *thread = mono_thread_internal_current ();
1697 /* Do this WaitSleepJoin check before creating objects */
1698 if (mono_thread_current_check_pending_interrupt ())
1699 return map_native_wait_result_to_managed (WAIT_FAILED);
1701 /* We fail in managed if the array has more than 64 elements */
1702 numhandles = (guint32)mono_array_length(mono_handles);
1703 handles = g_new0(HANDLE, numhandles);
1705 for(i = 0; i < numhandles; i++) {
1706 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
1707 handles [i] = mono_wait_handle_get_handle ((MonoWaitHandle *) waitHandle);
1714 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1716 ret = mono_wait_uninterrupted (thread, numhandles, handles, TRUE, ms, &error);
1718 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1722 mono_error_set_pending_exception (&error);
1724 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1725 return map_native_wait_result_to_managed (ret);
1728 gint32 ves_icall_System_Threading_WaitHandle_WaitAny_internal(MonoArray *mono_handles, gint32 ms)
1731 HANDLE handles [MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
1732 uintptr_t numhandles;
1735 MonoObject *waitHandle;
1736 MonoInternalThread *thread = mono_thread_internal_current ();
1738 /* Do this WaitSleepJoin check before creating objects */
1739 if (mono_thread_current_check_pending_interrupt ())
1740 return map_native_wait_result_to_managed (WAIT_FAILED);
1742 numhandles = mono_array_length(mono_handles);
1743 if (numhandles > MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS)
1744 return map_native_wait_result_to_managed (WAIT_FAILED);
1746 for(i = 0; i < numhandles; i++) {
1747 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
1748 handles [i] = mono_wait_handle_get_handle ((MonoWaitHandle *) waitHandle);
1755 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1757 ret = mono_wait_uninterrupted (thread, numhandles, handles, FALSE, ms, &error);
1759 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1761 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") returning %d", __func__, mono_native_thread_id_get (), ret));
1763 mono_error_set_pending_exception (&error);
1765 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1766 return map_native_wait_result_to_managed (ret);
1769 gint32 ves_icall_System_Threading_WaitHandle_WaitOne_internal(HANDLE handle, gint32 ms)
1773 MonoInternalThread *thread = mono_thread_internal_current ();
1775 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") waiting for %p, %d ms", __func__, mono_native_thread_id_get (), handle, ms));
1781 if (mono_thread_current_check_pending_interrupt ())
1782 return map_native_wait_result_to_managed (WAIT_FAILED);
1784 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1786 ret = mono_wait_uninterrupted (thread, 1, &handle, FALSE, ms, &error);
1788 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1790 mono_error_set_pending_exception (&error);
1791 return map_native_wait_result_to_managed (ret);
1795 ves_icall_System_Threading_WaitHandle_SignalAndWait_Internal (HANDLE toSignal, HANDLE toWait, gint32 ms)
1798 MonoInternalThread *thread = mono_thread_internal_current ();
1803 if (mono_thread_current_check_pending_interrupt ())
1804 return map_native_wait_result_to_managed (WAIT_FAILED);
1806 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1809 ret = SignalObjectAndWait (toSignal, toWait, ms, TRUE);
1812 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1814 return map_native_wait_result_to_managed (ret);
1817 gint32 ves_icall_System_Threading_Interlocked_Increment_Int (gint32 *location)
1819 return InterlockedIncrement (location);
1822 gint64 ves_icall_System_Threading_Interlocked_Increment_Long (gint64 *location)
1824 #if SIZEOF_VOID_P == 4
1825 if (G_UNLIKELY ((size_t)location & 0x7)) {
1827 mono_interlocked_lock ();
1830 mono_interlocked_unlock ();
1834 return InterlockedIncrement64 (location);
1837 gint32 ves_icall_System_Threading_Interlocked_Decrement_Int (gint32 *location)
1839 return InterlockedDecrement(location);
1842 gint64 ves_icall_System_Threading_Interlocked_Decrement_Long (gint64 * location)
1844 #if SIZEOF_VOID_P == 4
1845 if (G_UNLIKELY ((size_t)location & 0x7)) {
1847 mono_interlocked_lock ();
1850 mono_interlocked_unlock ();
1854 return InterlockedDecrement64 (location);
1857 gint32 ves_icall_System_Threading_Interlocked_Exchange_Int (gint32 *location, gint32 value)
1859 return InterlockedExchange(location, value);
1862 MonoObject * ves_icall_System_Threading_Interlocked_Exchange_Object (MonoObject **location, MonoObject *value)
1865 res = (MonoObject *) InterlockedExchangePointer((gpointer *) location, value);
1866 mono_gc_wbarrier_generic_nostore (location);
1870 gpointer ves_icall_System_Threading_Interlocked_Exchange_IntPtr (gpointer *location, gpointer value)
1872 return InterlockedExchangePointer(location, value);
1875 gfloat ves_icall_System_Threading_Interlocked_Exchange_Single (gfloat *location, gfloat value)
1877 IntFloatUnion val, ret;
1880 ret.ival = InterlockedExchange((gint32 *) location, val.ival);
1886 ves_icall_System_Threading_Interlocked_Exchange_Long (gint64 *location, gint64 value)
1888 #if SIZEOF_VOID_P == 4
1889 if (G_UNLIKELY ((size_t)location & 0x7)) {
1891 mono_interlocked_lock ();
1894 mono_interlocked_unlock ();
1898 return InterlockedExchange64 (location, value);
1902 ves_icall_System_Threading_Interlocked_Exchange_Double (gdouble *location, gdouble value)
1904 LongDoubleUnion val, ret;
1907 ret.ival = (gint64)InterlockedExchange64((gint64 *) location, val.ival);
1912 gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int(gint32 *location, gint32 value, gint32 comparand)
1914 return InterlockedCompareExchange(location, value, comparand);
1917 gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int_Success(gint32 *location, gint32 value, gint32 comparand, MonoBoolean *success)
1919 gint32 r = InterlockedCompareExchange(location, value, comparand);
1920 *success = r == comparand;
1924 MonoObject * ves_icall_System_Threading_Interlocked_CompareExchange_Object (MonoObject **location, MonoObject *value, MonoObject *comparand)
1927 res = (MonoObject *) InterlockedCompareExchangePointer((gpointer *) location, value, comparand);
1928 mono_gc_wbarrier_generic_nostore (location);
1932 gpointer ves_icall_System_Threading_Interlocked_CompareExchange_IntPtr(gpointer *location, gpointer value, gpointer comparand)
1934 return InterlockedCompareExchangePointer(location, value, comparand);
1937 gfloat ves_icall_System_Threading_Interlocked_CompareExchange_Single (gfloat *location, gfloat value, gfloat comparand)
1939 IntFloatUnion val, ret, cmp;
1942 cmp.fval = comparand;
1943 ret.ival = InterlockedCompareExchange((gint32 *) location, val.ival, cmp.ival);
1949 ves_icall_System_Threading_Interlocked_CompareExchange_Double (gdouble *location, gdouble value, gdouble comparand)
1951 #if SIZEOF_VOID_P == 8
1952 LongDoubleUnion val, comp, ret;
1955 comp.fval = comparand;
1956 ret.ival = (gint64)InterlockedCompareExchangePointer((gpointer *) location, (gpointer)val.ival, (gpointer)comp.ival);
1962 mono_interlocked_lock ();
1964 if (old == comparand)
1966 mono_interlocked_unlock ();
1973 ves_icall_System_Threading_Interlocked_CompareExchange_Long (gint64 *location, gint64 value, gint64 comparand)
1975 #if SIZEOF_VOID_P == 4
1976 if (G_UNLIKELY ((size_t)location & 0x7)) {
1978 mono_interlocked_lock ();
1980 if (old == comparand)
1982 mono_interlocked_unlock ();
1986 return InterlockedCompareExchange64 (location, value, comparand);
1990 ves_icall_System_Threading_Interlocked_CompareExchange_T (MonoObject **location, MonoObject *value, MonoObject *comparand)
1993 res = (MonoObject *)InterlockedCompareExchangePointer ((volatile gpointer *)location, value, comparand);
1994 mono_gc_wbarrier_generic_nostore (location);
1999 ves_icall_System_Threading_Interlocked_Exchange_T (MonoObject **location, MonoObject *value)
2002 MONO_CHECK_NULL (location, NULL);
2003 res = (MonoObject *)InterlockedExchangePointer ((volatile gpointer *)location, value);
2004 mono_gc_wbarrier_generic_nostore (location);
2009 ves_icall_System_Threading_Interlocked_Add_Int (gint32 *location, gint32 value)
2011 return InterlockedAdd (location, value);
2015 ves_icall_System_Threading_Interlocked_Add_Long (gint64 *location, gint64 value)
2017 #if SIZEOF_VOID_P == 4
2018 if (G_UNLIKELY ((size_t)location & 0x7)) {
2020 mono_interlocked_lock ();
2023 mono_interlocked_unlock ();
2027 return InterlockedAdd64 (location, value);
2031 ves_icall_System_Threading_Interlocked_Read_Long (gint64 *location)
2033 #if SIZEOF_VOID_P == 4
2034 if (G_UNLIKELY ((size_t)location & 0x7)) {
2036 mono_interlocked_lock ();
2038 mono_interlocked_unlock ();
2042 return InterlockedRead64 (location);
2046 ves_icall_System_Threading_Thread_MemoryBarrier (void)
2048 mono_memory_barrier ();
2052 ves_icall_System_Threading_Thread_ClrState (MonoInternalThread* this_obj, guint32 state)
2054 mono_thread_clr_state (this_obj, (MonoThreadState)state);
2056 if (state & ThreadState_Background) {
2057 /* If the thread changes the background mode, the main thread has to
2058 * be notified, since it has to rebuild the list of threads to
2061 mono_w32event_set (background_change_event);
2066 ves_icall_System_Threading_Thread_SetState (MonoInternalThread* this_obj, guint32 state)
2068 mono_thread_set_state (this_obj, (MonoThreadState)state);
2070 if (state & ThreadState_Background) {
2071 /* If the thread changes the background mode, the main thread has to
2072 * be notified, since it has to rebuild the list of threads to
2075 mono_w32event_set (background_change_event);
2080 ves_icall_System_Threading_Thread_GetState (MonoInternalThread* this_obj)
2084 LOCK_THREAD (this_obj);
2086 state = this_obj->state;
2088 UNLOCK_THREAD (this_obj);
2093 void ves_icall_System_Threading_Thread_Interrupt_internal (MonoThread *this_obj)
2095 MonoInternalThread *current;
2097 MonoInternalThread *thread = this_obj->internal_thread;
2099 LOCK_THREAD (thread);
2101 current = mono_thread_internal_current ();
2103 thread->thread_interrupt_requested = TRUE;
2104 throw_ = current != thread && (thread->state & ThreadState_WaitSleepJoin);
2106 UNLOCK_THREAD (thread);
2109 async_abort_internal (thread, FALSE);
2114 * mono_thread_current_check_pending_interrupt:
2116 * Checks if there's a interruption request and set the pending exception if so.
2118 * @returns true if a pending exception was set
2121 mono_thread_current_check_pending_interrupt (void)
2123 MonoInternalThread *thread = mono_thread_internal_current ();
2124 gboolean throw_ = FALSE;
2126 LOCK_THREAD (thread);
2128 if (thread->thread_interrupt_requested) {
2130 thread->thread_interrupt_requested = FALSE;
2133 UNLOCK_THREAD (thread);
2136 mono_set_pending_exception (mono_get_exception_thread_interrupted ());
2141 request_thread_abort (MonoInternalThread *thread, MonoObject *state)
2143 LOCK_THREAD (thread);
2145 if ((thread->state & ThreadState_AbortRequested) != 0 ||
2146 (thread->state & ThreadState_StopRequested) != 0 ||
2147 (thread->state & ThreadState_Stopped) != 0)
2149 UNLOCK_THREAD (thread);
2153 if ((thread->state & ThreadState_Unstarted) != 0) {
2154 thread->state |= ThreadState_Aborted;
2155 UNLOCK_THREAD (thread);
2159 thread->state |= ThreadState_AbortRequested;
2160 if (thread->abort_state_handle)
2161 mono_gchandle_free (thread->abort_state_handle);
2163 thread->abort_state_handle = mono_gchandle_new (state, FALSE);
2164 g_assert (thread->abort_state_handle);
2166 thread->abort_state_handle = 0;
2168 thread->abort_exc = NULL;
2170 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));
2172 /* During shutdown, we can't wait for other threads */
2174 /* Make sure the thread is awake */
2175 mono_thread_resume (thread);
2177 UNLOCK_THREAD (thread);
2182 ves_icall_System_Threading_Thread_Abort (MonoInternalThread *thread, MonoObject *state)
2184 if (!request_thread_abort (thread, state))
2187 if (thread == mono_thread_internal_current ()) {
2189 self_abort_internal (&error);
2190 mono_error_set_pending_exception (&error);
2192 async_abort_internal (thread, TRUE);
2197 * mono_thread_internal_abort:
2199 * Request thread @thread to be aborted.
2201 * @thread MUST NOT be the current thread.
2204 mono_thread_internal_abort (MonoInternalThread *thread)
2206 g_assert (thread != mono_thread_internal_current ());
2208 if (!request_thread_abort (thread, NULL))
2210 async_abort_internal (thread, TRUE);
2214 ves_icall_System_Threading_Thread_ResetAbort (MonoThread *this_obj)
2216 MonoInternalThread *thread = mono_thread_internal_current ();
2217 gboolean was_aborting;
2219 LOCK_THREAD (thread);
2220 was_aborting = thread->state & ThreadState_AbortRequested;
2221 thread->state &= ~ThreadState_AbortRequested;
2222 UNLOCK_THREAD (thread);
2224 if (!was_aborting) {
2225 const char *msg = "Unable to reset abort because no abort was requested";
2226 mono_set_pending_exception (mono_get_exception_thread_state (msg));
2229 thread->abort_exc = NULL;
2230 if (thread->abort_state_handle) {
2231 mono_gchandle_free (thread->abort_state_handle);
2232 /* This is actually not necessary - the handle
2233 only counts if the exception is set */
2234 thread->abort_state_handle = 0;
2239 mono_thread_internal_reset_abort (MonoInternalThread *thread)
2241 LOCK_THREAD (thread);
2243 thread->state &= ~ThreadState_AbortRequested;
2245 if (thread->abort_exc) {
2246 thread->abort_exc = NULL;
2247 if (thread->abort_state_handle) {
2248 mono_gchandle_free (thread->abort_state_handle);
2249 /* This is actually not necessary - the handle
2250 only counts if the exception is set */
2251 thread->abort_state_handle = 0;
2255 UNLOCK_THREAD (thread);
2259 ves_icall_System_Threading_Thread_GetAbortExceptionState (MonoThread *this_obj)
2262 MonoInternalThread *thread = this_obj->internal_thread;
2263 MonoObject *state, *deserialized = NULL;
2266 if (!thread->abort_state_handle)
2269 state = mono_gchandle_get_target (thread->abort_state_handle);
2272 domain = mono_domain_get ();
2273 if (mono_object_domain (state) == domain)
2276 deserialized = mono_object_xdomain_representation (state, domain, &error);
2278 if (!deserialized) {
2279 MonoException *invalid_op_exc = mono_get_exception_invalid_operation ("Thread.ExceptionState cannot access an ExceptionState from a different AppDomain");
2280 if (!is_ok (&error)) {
2281 MonoObject *exc = (MonoObject*)mono_error_convert_to_exception (&error);
2282 MONO_OBJECT_SETREF (invalid_op_exc, inner_ex, exc);
2284 mono_set_pending_exception (invalid_op_exc);
2288 return deserialized;
2292 mono_thread_suspend (MonoInternalThread *thread)
2294 LOCK_THREAD (thread);
2296 if ((thread->state & ThreadState_Unstarted) != 0 ||
2297 (thread->state & ThreadState_Aborted) != 0 ||
2298 (thread->state & ThreadState_Stopped) != 0)
2300 UNLOCK_THREAD (thread);
2304 if ((thread->state & ThreadState_Suspended) != 0 ||
2305 (thread->state & ThreadState_SuspendRequested) != 0 ||
2306 (thread->state & ThreadState_StopRequested) != 0)
2308 UNLOCK_THREAD (thread);
2312 thread->state |= ThreadState_SuspendRequested;
2314 if (thread == mono_thread_internal_current ()) {
2315 /* calls UNLOCK_THREAD (thread) */
2316 self_suspend_internal ();
2318 /* calls UNLOCK_THREAD (thread) */
2319 async_suspend_internal (thread, FALSE);
2326 ves_icall_System_Threading_Thread_Suspend (MonoThread *this_obj)
2328 if (!mono_thread_suspend (this_obj->internal_thread)) {
2329 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2334 /* LOCKING: LOCK_THREAD(thread) must be held */
2336 mono_thread_resume (MonoInternalThread *thread)
2338 if ((thread->state & ThreadState_SuspendRequested) != 0) {
2339 thread->state &= ~ThreadState_SuspendRequested;
2343 if ((thread->state & ThreadState_Suspended) == 0 ||
2344 (thread->state & ThreadState_Unstarted) != 0 ||
2345 (thread->state & ThreadState_Aborted) != 0 ||
2346 (thread->state & ThreadState_Stopped) != 0)
2351 UNLOCK_THREAD (thread);
2353 /* Awake the thread */
2354 if (!mono_thread_info_resume (thread_get_tid (thread)))
2357 LOCK_THREAD (thread);
2359 thread->state &= ~ThreadState_Suspended;
2365 ves_icall_System_Threading_Thread_Resume (MonoThread *thread)
2367 if (!thread->internal_thread) {
2368 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2370 LOCK_THREAD (thread->internal_thread);
2371 if (!mono_thread_resume (thread->internal_thread))
2372 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2373 UNLOCK_THREAD (thread->internal_thread);
2378 mono_threads_is_critical_method (MonoMethod *method)
2380 switch (method->wrapper_type) {
2381 case MONO_WRAPPER_RUNTIME_INVOKE:
2382 case MONO_WRAPPER_XDOMAIN_INVOKE:
2383 case MONO_WRAPPER_XDOMAIN_DISPATCH:
2390 find_wrapper (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
2395 if (mono_threads_is_critical_method (m)) {
2396 *((gboolean*)data) = TRUE;
2403 is_running_protected_wrapper (void)
2405 gboolean found = FALSE;
2406 mono_stack_walk (find_wrapper, &found);
2411 request_thread_stop (MonoInternalThread *thread)
2413 LOCK_THREAD (thread);
2415 if ((thread->state & ThreadState_StopRequested) != 0 ||
2416 (thread->state & ThreadState_Stopped) != 0)
2418 UNLOCK_THREAD (thread);
2422 /* Make sure the thread is awake */
2423 mono_thread_resume (thread);
2425 thread->state |= ThreadState_StopRequested;
2426 thread->state &= ~ThreadState_AbortRequested;
2428 UNLOCK_THREAD (thread);
2433 * mono_thread_internal_stop:
2435 * Request thread @thread to stop.
2437 * @thread MUST NOT be the current thread.
2440 mono_thread_internal_stop (MonoInternalThread *thread)
2442 g_assert (thread != mono_thread_internal_current ());
2444 if (!request_thread_stop (thread))
2447 async_abort_internal (thread, TRUE);
2450 void mono_thread_stop (MonoThread *thread)
2452 MonoInternalThread *internal = thread->internal_thread;
2454 if (!request_thread_stop (internal))
2457 if (internal == mono_thread_internal_current ()) {
2459 self_abort_internal (&error);
2461 This function is part of the embeding API and has no way to return the exception
2462 to be thrown. So what we do is keep the old behavior and raise the exception.
2464 mono_error_raise_exception (&error); /* OK to throw, see note */
2466 async_abort_internal (internal, TRUE);
2471 ves_icall_System_Threading_Thread_VolatileRead1 (void *ptr)
2473 gint8 tmp = *(volatile gint8 *)ptr;
2474 mono_memory_barrier ();
2479 ves_icall_System_Threading_Thread_VolatileRead2 (void *ptr)
2481 gint16 tmp = *(volatile gint16 *)ptr;
2482 mono_memory_barrier ();
2487 ves_icall_System_Threading_Thread_VolatileRead4 (void *ptr)
2489 gint32 tmp = *(volatile gint32 *)ptr;
2490 mono_memory_barrier ();
2495 ves_icall_System_Threading_Thread_VolatileRead8 (void *ptr)
2497 gint64 tmp = *(volatile gint64 *)ptr;
2498 mono_memory_barrier ();
2503 ves_icall_System_Threading_Thread_VolatileReadIntPtr (void *ptr)
2505 volatile void *tmp = *(volatile void **)ptr;
2506 mono_memory_barrier ();
2507 return (void *) tmp;
2511 ves_icall_System_Threading_Thread_VolatileReadObject (void *ptr)
2513 volatile MonoObject *tmp = *(volatile MonoObject **)ptr;
2514 mono_memory_barrier ();
2515 return (MonoObject *) tmp;
2519 ves_icall_System_Threading_Thread_VolatileReadDouble (void *ptr)
2521 double tmp = *(volatile double *)ptr;
2522 mono_memory_barrier ();
2527 ves_icall_System_Threading_Thread_VolatileReadFloat (void *ptr)
2529 float tmp = *(volatile float *)ptr;
2530 mono_memory_barrier ();
2535 ves_icall_System_Threading_Volatile_Read1 (void *ptr)
2537 return InterlockedRead8 ((volatile gint8 *)ptr);
2541 ves_icall_System_Threading_Volatile_Read2 (void *ptr)
2543 return InterlockedRead16 ((volatile gint16 *)ptr);
2547 ves_icall_System_Threading_Volatile_Read4 (void *ptr)
2549 return InterlockedRead ((volatile gint32 *)ptr);
2553 ves_icall_System_Threading_Volatile_Read8 (void *ptr)
2555 #if SIZEOF_VOID_P == 4
2556 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2558 mono_interlocked_lock ();
2559 val = *(gint64*)ptr;
2560 mono_interlocked_unlock ();
2564 return InterlockedRead64 ((volatile gint64 *)ptr);
2568 ves_icall_System_Threading_Volatile_ReadIntPtr (void *ptr)
2570 return InterlockedReadPointer ((volatile gpointer *)ptr);
2574 ves_icall_System_Threading_Volatile_ReadDouble (void *ptr)
2578 #if SIZEOF_VOID_P == 4
2579 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2581 mono_interlocked_lock ();
2582 val = *(double*)ptr;
2583 mono_interlocked_unlock ();
2588 u.ival = InterlockedRead64 ((volatile gint64 *)ptr);
2594 ves_icall_System_Threading_Volatile_ReadFloat (void *ptr)
2598 u.ival = InterlockedRead ((volatile gint32 *)ptr);
2604 ves_icall_System_Threading_Volatile_Read_T (void *ptr)
2606 return (MonoObject *)InterlockedReadPointer ((volatile gpointer *)ptr);
2610 ves_icall_System_Threading_Thread_VolatileWrite1 (void *ptr, gint8 value)
2612 mono_memory_barrier ();
2613 *(volatile gint8 *)ptr = value;
2617 ves_icall_System_Threading_Thread_VolatileWrite2 (void *ptr, gint16 value)
2619 mono_memory_barrier ();
2620 *(volatile gint16 *)ptr = value;
2624 ves_icall_System_Threading_Thread_VolatileWrite4 (void *ptr, gint32 value)
2626 mono_memory_barrier ();
2627 *(volatile gint32 *)ptr = value;
2631 ves_icall_System_Threading_Thread_VolatileWrite8 (void *ptr, gint64 value)
2633 mono_memory_barrier ();
2634 *(volatile gint64 *)ptr = value;
2638 ves_icall_System_Threading_Thread_VolatileWriteIntPtr (void *ptr, void *value)
2640 mono_memory_barrier ();
2641 *(volatile void **)ptr = value;
2645 ves_icall_System_Threading_Thread_VolatileWriteObject (void *ptr, MonoObject *value)
2647 mono_memory_barrier ();
2648 mono_gc_wbarrier_generic_store (ptr, value);
2652 ves_icall_System_Threading_Thread_VolatileWriteDouble (void *ptr, double value)
2654 mono_memory_barrier ();
2655 *(volatile double *)ptr = value;
2659 ves_icall_System_Threading_Thread_VolatileWriteFloat (void *ptr, float value)
2661 mono_memory_barrier ();
2662 *(volatile float *)ptr = value;
2666 ves_icall_System_Threading_Volatile_Write1 (void *ptr, gint8 value)
2668 InterlockedWrite8 ((volatile gint8 *)ptr, value);
2672 ves_icall_System_Threading_Volatile_Write2 (void *ptr, gint16 value)
2674 InterlockedWrite16 ((volatile gint16 *)ptr, value);
2678 ves_icall_System_Threading_Volatile_Write4 (void *ptr, gint32 value)
2680 InterlockedWrite ((volatile gint32 *)ptr, value);
2684 ves_icall_System_Threading_Volatile_Write8 (void *ptr, gint64 value)
2686 #if SIZEOF_VOID_P == 4
2687 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2688 mono_interlocked_lock ();
2689 *(gint64*)ptr = value;
2690 mono_interlocked_unlock ();
2695 InterlockedWrite64 ((volatile gint64 *)ptr, value);
2699 ves_icall_System_Threading_Volatile_WriteIntPtr (void *ptr, void *value)
2701 InterlockedWritePointer ((volatile gpointer *)ptr, value);
2705 ves_icall_System_Threading_Volatile_WriteDouble (void *ptr, double value)
2709 #if SIZEOF_VOID_P == 4
2710 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2711 mono_interlocked_lock ();
2712 *(double*)ptr = value;
2713 mono_interlocked_unlock ();
2720 InterlockedWrite64 ((volatile gint64 *)ptr, u.ival);
2724 ves_icall_System_Threading_Volatile_WriteFloat (void *ptr, float value)
2730 InterlockedWrite ((volatile gint32 *)ptr, u.ival);
2734 ves_icall_System_Threading_Volatile_Write_T (void *ptr, MonoObject *value)
2736 mono_gc_wbarrier_generic_store_atomic (ptr, value);
2740 free_context (void *user_data)
2742 ContextStaticData *data = user_data;
2744 mono_threads_lock ();
2747 * There is no guarantee that, by the point this reference queue callback
2748 * has been invoked, the GC handle associated with the object will fail to
2749 * resolve as one might expect. So if we don't free and remove the GC
2750 * handle here, free_context_static_data_helper () could end up resolving
2751 * a GC handle to an actually-dead context which would contain a pointer
2752 * to an already-freed static data segment, resulting in a crash when
2755 g_hash_table_remove (contexts, GUINT_TO_POINTER (data->gc_handle));
2757 mono_threads_unlock ();
2759 mono_gchandle_free (data->gc_handle);
2760 mono_free_static_data (data->static_data);
2765 ves_icall_System_Runtime_Remoting_Contexts_Context_RegisterContext (MonoAppContext *ctx)
2767 mono_threads_lock ();
2769 //g_print ("Registering context %d in domain %d\n", ctx->context_id, ctx->domain_id);
2772 contexts = g_hash_table_new (NULL, NULL);
2775 context_queue = mono_gc_reference_queue_new (free_context);
2777 gpointer gch = GUINT_TO_POINTER (mono_gchandle_new_weakref (&ctx->obj, FALSE));
2778 g_hash_table_insert (contexts, gch, gch);
2781 * We use this intermediate structure to contain a duplicate pointer to
2782 * the static data because we can't rely on being able to resolve the GC
2783 * handle in the reference queue callback.
2785 ContextStaticData *data = g_new0 (ContextStaticData, 1);
2786 data->gc_handle = GPOINTER_TO_UINT (gch);
2789 context_adjust_static_data (ctx);
2790 mono_gc_reference_queue_add (context_queue, &ctx->obj, data);
2792 mono_threads_unlock ();
2794 mono_profiler_context_loaded (ctx);
2798 ves_icall_System_Runtime_Remoting_Contexts_Context_ReleaseContext (MonoAppContext *ctx)
2801 * NOTE: Since finalizers are unreliable for the purposes of ensuring
2802 * cleanup in exceptional circumstances, we don't actually do any
2803 * cleanup work here. We instead do this via a reference queue.
2806 //g_print ("Releasing context %d in domain %d\n", ctx->context_id, ctx->domain_id);
2808 mono_profiler_context_unloaded (ctx);
2812 mono_thread_init_tls (void)
2814 MONO_FAST_TLS_INIT (tls_current_object);
2815 mono_native_tls_alloc (¤t_object_key, NULL);
2818 void mono_thread_init (MonoThreadStartCB start_cb,
2819 MonoThreadAttachCB attach_cb)
2821 mono_coop_mutex_init_recursive (&threads_mutex);
2823 mono_os_mutex_init_recursive(&interlocked_mutex);
2824 mono_os_mutex_init_recursive(&joinable_threads_mutex);
2826 background_change_event = mono_w32event_create (TRUE, FALSE);
2827 g_assert(background_change_event != NULL);
2829 mono_init_static_data_info (&thread_static_info);
2830 mono_init_static_data_info (&context_static_info);
2832 THREAD_DEBUG (g_message ("%s: Allocated current_object_key %d", __func__, current_object_key));
2834 mono_thread_start_cb = start_cb;
2835 mono_thread_attach_cb = attach_cb;
2837 /* Get a pseudo handle to the current process. This is just a
2838 * kludge so that wapi can build a process handle if needed.
2839 * As a pseudo handle is returned, we don't need to clean
2842 GetCurrentProcess ();
2845 void mono_thread_cleanup (void)
2847 #if !defined(RUN_IN_SUBTHREAD)
2848 /* The main thread must abandon any held mutexes (particularly
2849 * important for named mutexes as they are shared across
2850 * processes, see bug 74680.) This will happen when the
2851 * thread exits, but if it's not running in a subthread it
2852 * won't exit in time.
2854 mono_thread_info_set_exited (mono_thread_info_current ());
2858 /* This stuff needs more testing, it seems one of these
2859 * critical sections can be locked when mono_thread_cleanup is
2862 mono_coop_mutex_destroy (&threads_mutex);
2863 mono_os_mutex_destroy (&interlocked_mutex);
2864 mono_os_mutex_destroy (&delayed_free_table_mutex);
2865 mono_os_mutex_destroy (&small_id_mutex);
2866 CloseHandle (background_change_event);
2869 mono_native_tls_free (current_object_key);
2873 mono_threads_install_cleanup (MonoThreadCleanupFunc func)
2875 mono_thread_cleanup_fn = func;
2879 mono_thread_set_manage_callback (MonoThread *thread, MonoThreadManageCallback func)
2881 thread->internal_thread->manage_callback = func;
2885 static void print_tids (gpointer key, gpointer value, gpointer user)
2887 /* GPOINTER_TO_UINT breaks horribly if sizeof(void *) >
2888 * sizeof(uint) and a cast to uint would overflow
2890 /* Older versions of glib don't have G_GSIZE_FORMAT, so just
2891 * print this as a pointer.
2893 g_message ("Waiting for: %p", key);
2898 HANDLE handles[MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
2899 MonoInternalThread *threads[MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
2904 wait_for_tids (struct wait_data *wait, guint32 timeout)
2908 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
2911 ret=WaitForMultipleObjectsEx(wait->num, wait->handles, TRUE, timeout, TRUE);
2914 if(ret==WAIT_FAILED) {
2915 /* See the comment in build_wait_tids() */
2916 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
2920 for(i=0; i<wait->num; i++)
2921 mono_threads_close_thread_handle (wait->handles [i]);
2923 if (ret == WAIT_TIMEOUT)
2926 for(i=0; i<wait->num; i++) {
2927 gsize tid = wait->threads[i]->tid;
2930 * On !win32, when the thread handle becomes signalled, it just means the thread has exited user code,
2931 * it can still run io-layer etc. code. So wait for it to really exit.
2932 * FIXME: This won't join threads which are not in the joinable_hash yet.
2934 mono_thread_join ((gpointer)tid);
2936 mono_threads_lock ();
2937 if(mono_g_hash_table_lookup (threads, (gpointer)tid)!=NULL) {
2938 /* This thread must have been killed, because
2939 * it hasn't cleaned itself up. (It's just
2940 * possible that the thread exited before the
2941 * parent thread had a chance to store the
2942 * handle, and now there is another pointer to
2943 * the already-exited thread stored. In this
2944 * case, we'll just get two
2945 * mono_profiler_thread_end() calls for the
2949 mono_threads_unlock ();
2950 THREAD_DEBUG (g_message ("%s: cleaning up after thread %p (%"G_GSIZE_FORMAT")", __func__, wait->threads[i], tid));
2951 thread_cleanup (wait->threads[i]);
2953 mono_threads_unlock ();
2958 static void wait_for_tids_or_state_change (struct wait_data *wait, guint32 timeout)
2960 guint32 i, ret, count;
2962 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
2964 /* Add the thread state change event, so it wakes up if a thread changes
2965 * to background mode.
2968 if (count < MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS) {
2969 wait->handles [count] = background_change_event;
2974 ret=WaitForMultipleObjectsEx (count, wait->handles, FALSE, timeout, TRUE);
2977 if(ret==WAIT_FAILED) {
2978 /* See the comment in build_wait_tids() */
2979 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
2983 for(i=0; i<wait->num; i++)
2984 mono_threads_close_thread_handle (wait->handles [i]);
2986 if (ret == WAIT_TIMEOUT)
2989 if (ret < wait->num) {
2990 gsize tid = wait->threads[ret]->tid;
2991 mono_threads_lock ();
2992 if (mono_g_hash_table_lookup (threads, (gpointer)tid)!=NULL) {
2993 /* See comment in wait_for_tids about thread cleanup */
2994 mono_threads_unlock ();
2995 THREAD_DEBUG (g_message ("%s: cleaning up after thread %"G_GSIZE_FORMAT, __func__, tid));
2996 thread_cleanup (wait->threads [ret]);
2998 mono_threads_unlock ();
3002 static void build_wait_tids (gpointer key, gpointer value, gpointer user)
3004 struct wait_data *wait=(struct wait_data *)user;
3006 if(wait->num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS) {
3008 MonoInternalThread *thread=(MonoInternalThread *)value;
3010 /* Ignore background threads, we abort them later */
3011 /* Do not lock here since it is not needed and the caller holds threads_lock */
3012 if (thread->state & ThreadState_Background) {
3013 THREAD_DEBUG (g_message ("%s: ignoring background thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3014 return; /* just leave, ignore */
3017 if (mono_gc_is_finalizer_internal_thread (thread)) {
3018 THREAD_DEBUG (g_message ("%s: ignoring finalizer thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3022 if (thread == mono_thread_internal_current ()) {
3023 THREAD_DEBUG (g_message ("%s: ignoring current thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3027 if (mono_thread_get_main () && (thread == mono_thread_get_main ()->internal_thread)) {
3028 THREAD_DEBUG (g_message ("%s: ignoring main thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3032 if (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE) {
3033 THREAD_DEBUG (g_message ("%s: ignoring thread %" G_GSIZE_FORMAT "with DONT_MANAGE flag set.", __func__, (gsize)thread->tid));
3037 handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3038 if (handle == NULL) {
3039 THREAD_DEBUG (g_message ("%s: ignoring unopenable thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3043 THREAD_DEBUG (g_message ("%s: Invoking mono_thread_manage callback on thread %p", __func__, thread));
3044 if ((thread->manage_callback == NULL) || (thread->manage_callback (thread->root_domain_thread) == TRUE)) {
3045 wait->handles[wait->num]=handle;
3046 wait->threads[wait->num]=thread;
3049 THREAD_DEBUG (g_message ("%s: adding thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3051 THREAD_DEBUG (g_message ("%s: ignoring (because of callback) thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3056 /* Just ignore the rest, we can't do anything with
3063 remove_and_abort_threads (gpointer key, gpointer value, gpointer user)
3065 struct wait_data *wait=(struct wait_data *)user;
3066 MonoNativeThreadId self = mono_native_thread_id_get ();
3067 MonoInternalThread *thread = (MonoInternalThread *)value;
3070 if (wait->num >= MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS)
3073 /* The finalizer thread is not a background thread */
3074 if (!mono_native_thread_id_equals (thread_get_tid (thread), self)
3075 && (thread->state & ThreadState_Background) != 0
3076 && (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE) == 0
3078 handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3082 wait->handles[wait->num] = handle;
3083 wait->threads[wait->num] = thread;
3086 THREAD_DEBUG (g_print ("%s: Aborting id: %"G_GSIZE_FORMAT"\n", __func__, (gsize)thread->tid));
3087 mono_thread_internal_abort (thread);
3091 return !mono_native_thread_id_equals (thread_get_tid (thread), self)
3092 && !mono_gc_is_finalizer_internal_thread (thread);
3096 * mono_threads_set_shutting_down:
3098 * Is called by a thread that wants to shut down Mono. If the runtime is already
3099 * shutting down, the calling thread is suspended/stopped, and this function never
3103 mono_threads_set_shutting_down (void)
3105 MonoInternalThread *current_thread = mono_thread_internal_current ();
3107 mono_threads_lock ();
3109 if (shutting_down) {
3110 mono_threads_unlock ();
3112 /* Make sure we're properly suspended/stopped */
3114 LOCK_THREAD (current_thread);
3116 if ((current_thread->state & ThreadState_SuspendRequested) ||
3117 (current_thread->state & ThreadState_AbortRequested) ||
3118 (current_thread->state & ThreadState_StopRequested)) {
3119 UNLOCK_THREAD (current_thread);
3120 mono_thread_execute_interruption ();
3122 current_thread->state |= ThreadState_Stopped;
3123 UNLOCK_THREAD (current_thread);
3126 /*since we're killing the thread, detach it.*/
3127 mono_thread_detach_internal (current_thread);
3129 /* Wake up other threads potentially waiting for us */
3130 mono_thread_info_exit ();
3132 shutting_down = TRUE;
3134 /* Not really a background state change, but this will
3135 * interrupt the main thread if it is waiting for all
3136 * the other threads.
3138 mono_w32event_set (background_change_event);
3140 mono_threads_unlock ();
3144 void mono_thread_manage (void)
3146 struct wait_data wait_data;
3147 struct wait_data *wait = &wait_data;
3149 memset (wait, 0, sizeof (struct wait_data));
3150 /* join each thread that's still running */
3151 THREAD_DEBUG (g_message ("%s: Joining each running thread...", __func__));
3153 mono_threads_lock ();
3155 THREAD_DEBUG (g_message("%s: No threads", __func__));
3156 mono_threads_unlock ();
3159 mono_threads_unlock ();
3162 mono_threads_lock ();
3163 if (shutting_down) {
3164 /* somebody else is shutting down */
3165 mono_threads_unlock ();
3168 THREAD_DEBUG (g_message ("%s: There are %d threads to join", __func__, mono_g_hash_table_size (threads));
3169 mono_g_hash_table_foreach (threads, print_tids, NULL));
3171 mono_w32event_reset (background_change_event);
3173 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3174 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3175 mono_g_hash_table_foreach (threads, build_wait_tids, wait);
3176 mono_threads_unlock ();
3178 /* Something to wait for */
3179 wait_for_tids_or_state_change (wait, INFINITE);
3181 THREAD_DEBUG (g_message ("%s: I have %d threads after waiting.", __func__, wait->num));
3182 } while(wait->num>0);
3184 /* Mono is shutting down, so just wait for the end */
3185 if (!mono_runtime_try_shutdown ()) {
3186 /*FIXME mono_thread_suspend probably should call mono_thread_execute_interruption when self interrupting. */
3187 mono_thread_suspend (mono_thread_internal_current ());
3188 mono_thread_execute_interruption ();
3192 * Remove everything but the finalizer thread and self.
3193 * Also abort all the background threads
3196 mono_threads_lock ();
3199 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3200 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3201 mono_g_hash_table_foreach_remove (threads, remove_and_abort_threads, wait);
3203 mono_threads_unlock ();
3205 THREAD_DEBUG (g_message ("%s: wait->num is now %d", __func__, wait->num));
3207 /* Something to wait for */
3208 wait_for_tids (wait, INFINITE);
3210 } while (wait->num > 0);
3213 * give the subthreads a chance to really quit (this is mainly needed
3214 * to get correct user and system times from getrusage/wait/time(1)).
3215 * This could be removed if we avoid pthread_detach() and use pthread_join().
3217 mono_thread_info_yield ();
3221 collect_threads_for_suspend (gpointer key, gpointer value, gpointer user_data)
3223 MonoInternalThread *thread = (MonoInternalThread*)value;
3224 struct wait_data *wait = (struct wait_data*)user_data;
3228 * We try to exclude threads early, to avoid running into the MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS
3230 * This needs no locking.
3232 if ((thread->state & ThreadState_Suspended) != 0 ||
3233 (thread->state & ThreadState_Stopped) != 0)
3236 if (wait->num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS) {
3237 handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3241 wait->handles [wait->num] = handle;
3242 wait->threads [wait->num] = thread;
3248 * mono_thread_suspend_all_other_threads:
3250 * Suspend all managed threads except the finalizer thread and this thread. It is
3251 * not possible to resume them later.
3253 void mono_thread_suspend_all_other_threads (void)
3255 struct wait_data wait_data;
3256 struct wait_data *wait = &wait_data;
3258 MonoNativeThreadId self = mono_native_thread_id_get ();
3259 guint32 eventidx = 0;
3260 gboolean starting, finished;
3262 memset (wait, 0, sizeof (struct wait_data));
3264 * The other threads could be in an arbitrary state at this point, i.e.
3265 * they could be starting up, shutting down etc. This means that there could be
3266 * threads which are not even in the threads hash table yet.
3270 * First we set a barrier which will be checked by all threads before they
3271 * are added to the threads hash table, and they will exit if the flag is set.
3272 * This ensures that no threads could be added to the hash later.
3273 * We will use shutting_down as the barrier for now.
3275 g_assert (shutting_down);
3278 * We make multiple calls to WaitForMultipleObjects since:
3279 * - we can only wait for MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS threads
3280 * - some threads could exit without becoming suspended
3285 * Make a copy of the hashtable since we can't do anything with
3286 * threads while threads_mutex is held.
3289 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3290 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3291 mono_threads_lock ();
3292 mono_g_hash_table_foreach (threads, collect_threads_for_suspend, wait);
3293 mono_threads_unlock ();
3296 /* Get the suspended events that we'll be waiting for */
3297 for (i = 0; i < wait->num; ++i) {
3298 MonoInternalThread *thread = wait->threads [i];
3300 if (mono_native_thread_id_equals (thread_get_tid (thread), self)
3301 || mono_gc_is_finalizer_internal_thread (thread)
3302 || (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE)
3304 //mono_threads_close_thread_handle (wait->handles [i]);
3305 wait->threads [i] = NULL; /* ignore this thread in next loop */
3309 LOCK_THREAD (thread);
3311 if ((thread->state & ThreadState_Suspended) != 0 ||
3312 (thread->state & ThreadState_StopRequested) != 0 ||
3313 (thread->state & ThreadState_Stopped) != 0) {
3314 UNLOCK_THREAD (thread);
3315 mono_threads_close_thread_handle (wait->handles [i]);
3316 wait->threads [i] = NULL; /* ignore this thread in next loop */
3322 /* Convert abort requests into suspend requests */
3323 if ((thread->state & ThreadState_AbortRequested) != 0)
3324 thread->state &= ~ThreadState_AbortRequested;
3326 thread->state |= ThreadState_SuspendRequested;
3328 /* Signal the thread to suspend + calls UNLOCK_THREAD (thread) */
3329 async_suspend_internal (thread, TRUE);
3331 if (eventidx <= 0) {
3333 * If there are threads which are starting up, we wait until they
3334 * are suspended when they try to register in the threads hash.
3335 * This is guaranteed to finish, since the threads which can create new
3336 * threads get suspended after a while.
3337 * FIXME: The finalizer thread can still create new threads.
3339 mono_threads_lock ();
3340 if (threads_starting_up)
3341 starting = mono_g_hash_table_size (threads_starting_up) > 0;
3344 mono_threads_unlock ();
3346 mono_thread_info_sleep (100, NULL);
3354 MonoInternalThread *thread;
3355 MonoStackFrameInfo *frames;
3356 int nframes, max_frames;
3357 int nthreads, max_threads;
3358 MonoInternalThread **threads;
3359 } ThreadDumpUserData;
3361 static gboolean thread_dump_requested;
3363 /* This needs to be async safe */
3365 collect_frame (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
3367 ThreadDumpUserData *ud = (ThreadDumpUserData *)data;
3369 if (ud->nframes < ud->max_frames) {
3370 memcpy (&ud->frames [ud->nframes], frame, sizeof (MonoStackFrameInfo));
3377 /* This needs to be async safe */
3378 static SuspendThreadResult
3379 get_thread_dump (MonoThreadInfo *info, gpointer ud)
3381 ThreadDumpUserData *user_data = (ThreadDumpUserData *)ud;
3382 MonoInternalThread *thread = user_data->thread;
3385 /* This no longer works with remote unwinding */
3386 g_string_append_printf (text, " tid=0x%p this=0x%p ", (gpointer)(gsize)thread->tid, thread);
3387 mono_thread_internal_describe (thread, text);
3388 g_string_append (text, "\n");
3391 if (thread == mono_thread_internal_current ())
3392 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (collect_frame, NULL, MONO_UNWIND_SIGNAL_SAFE, ud);
3394 mono_get_eh_callbacks ()->mono_walk_stack_with_state (collect_frame, mono_thread_info_get_suspend_state (info), MONO_UNWIND_SIGNAL_SAFE, ud);
3396 return MonoResumeThread;
3400 int nthreads, max_threads;
3401 MonoInternalThread **threads;
3402 } CollectThreadsUserData;
3405 collect_thread (gpointer key, gpointer value, gpointer user)
3407 CollectThreadsUserData *ud = (CollectThreadsUserData *)user;
3408 MonoInternalThread *thread = (MonoInternalThread *)value;
3410 if (ud->nthreads < ud->max_threads)
3411 ud->threads [ud->nthreads ++] = thread;
3415 * Collect running threads into the THREADS array.
3416 * THREADS should be an array allocated on the stack.
3419 collect_threads (MonoInternalThread **thread_array, int max_threads)
3421 CollectThreadsUserData ud;
3423 memset (&ud, 0, sizeof (ud));
3424 /* This array contains refs, but its on the stack, so its ok */
3425 ud.threads = thread_array;
3426 ud.max_threads = max_threads;
3428 mono_threads_lock ();
3429 mono_g_hash_table_foreach (threads, collect_thread, &ud);
3430 mono_threads_unlock ();
3436 dump_thread (MonoInternalThread *thread, ThreadDumpUserData *ud)
3438 GString* text = g_string_new (0);
3440 GError *error = NULL;
3443 ud->thread = thread;
3446 /* Collect frames for the thread */
3447 if (thread == mono_thread_internal_current ()) {
3448 get_thread_dump (mono_thread_info_current (), ud);
3450 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), FALSE, get_thread_dump, ud);
3454 * Do all the non async-safe work outside of get_thread_dump.
3457 name = g_utf16_to_utf8 (thread->name, thread->name_len, NULL, NULL, &error);
3459 g_string_append_printf (text, "\n\"%s\"", name);
3462 else if (thread->threadpool_thread) {
3463 g_string_append (text, "\n\"<threadpool thread>\"");
3465 g_string_append (text, "\n\"<unnamed thread>\"");
3468 for (i = 0; i < ud->nframes; ++i) {
3469 MonoStackFrameInfo *frame = &ud->frames [i];
3470 MonoMethod *method = NULL;
3472 if (frame->type == FRAME_TYPE_MANAGED)
3473 method = mono_jit_info_get_method (frame->ji);
3476 gchar *location = mono_debug_print_stack_frame (method, frame->native_offset, frame->domain);
3477 g_string_append_printf (text, " %s\n", location);
3480 g_string_append_printf (text, " at <unknown> <0x%05x>\n", frame->native_offset);
3484 fprintf (stdout, "%s", text->str);
3486 #if PLATFORM_WIN32 && TARGET_WIN32 && _DEBUG
3487 OutputDebugStringA(text->str);
3490 g_string_free (text, TRUE);
3495 mono_threads_perform_thread_dump (void)
3497 ThreadDumpUserData ud;
3498 MonoInternalThread *thread_array [128];
3499 int tindex, nthreads;
3501 if (!thread_dump_requested)
3504 printf ("Full thread dump:\n");
3506 /* Make a copy of the threads hash to avoid doing work inside threads_lock () */
3507 nthreads = collect_threads (thread_array, 128);
3509 memset (&ud, 0, sizeof (ud));
3510 ud.frames = g_new0 (MonoStackFrameInfo, 256);
3511 ud.max_frames = 256;
3513 for (tindex = 0; tindex < nthreads; ++tindex)
3514 dump_thread (thread_array [tindex], &ud);
3518 thread_dump_requested = FALSE;
3521 /* Obtain the thread dump of all threads */
3523 mono_threads_get_thread_dump (MonoArray **out_threads, MonoArray **out_stack_frames, MonoError *error)
3526 ThreadDumpUserData ud;
3527 MonoInternalThread *thread_array [128];
3528 MonoDomain *domain = mono_domain_get ();
3529 MonoDebugSourceLocation *location;
3530 int tindex, nthreads;
3532 mono_error_init (error);
3534 *out_threads = NULL;
3535 *out_stack_frames = NULL;
3537 /* Make a copy of the threads hash to avoid doing work inside threads_lock () */
3538 nthreads = collect_threads (thread_array, 128);
3540 memset (&ud, 0, sizeof (ud));
3541 ud.frames = g_new0 (MonoStackFrameInfo, 256);
3542 ud.max_frames = 256;
3544 *out_threads = mono_array_new_checked (domain, mono_defaults.thread_class, nthreads, error);
3547 *out_stack_frames = mono_array_new_checked (domain, mono_defaults.array_class, nthreads, error);
3551 for (tindex = 0; tindex < nthreads; ++tindex) {
3552 MonoInternalThread *thread = thread_array [tindex];
3553 MonoArray *thread_frames;
3559 /* Collect frames for the thread */
3560 if (thread == mono_thread_internal_current ()) {
3561 get_thread_dump (mono_thread_info_current (), &ud);
3563 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), FALSE, get_thread_dump, &ud);
3566 mono_array_setref_fast (*out_threads, tindex, mono_thread_current_for_thread (thread));
3568 thread_frames = mono_array_new_checked (domain, mono_defaults.stack_frame_class, ud.nframes, error);
3571 mono_array_setref_fast (*out_stack_frames, tindex, thread_frames);
3573 for (i = 0; i < ud.nframes; ++i) {
3574 MonoStackFrameInfo *frame = &ud.frames [i];
3575 MonoMethod *method = NULL;
3576 MonoStackFrame *sf = (MonoStackFrame *)mono_object_new_checked (domain, mono_defaults.stack_frame_class, error);
3580 sf->native_offset = frame->native_offset;
3582 if (frame->type == FRAME_TYPE_MANAGED)
3583 method = mono_jit_info_get_method (frame->ji);
3586 sf->method_address = (gsize) frame->ji->code_start;
3588 MonoReflectionMethod *rm = mono_method_get_object_checked (domain, method, NULL, error);
3591 MONO_OBJECT_SETREF (sf, method, rm);
3593 location = mono_debug_lookup_source_location (method, frame->native_offset, domain);
3595 sf->il_offset = location->il_offset;
3597 if (location && location->source_file) {
3598 MONO_OBJECT_SETREF (sf, filename, mono_string_new (domain, location->source_file));
3599 sf->line = location->row;
3600 sf->column = location->column;
3602 mono_debug_free_source_location (location);
3607 mono_array_setref (thread_frames, i, sf);
3613 return is_ok (error);
3617 * mono_threads_request_thread_dump:
3619 * Ask all threads except the current to print their stacktrace to stdout.
3622 mono_threads_request_thread_dump (void)
3624 /*The new thread dump code runs out of the finalizer thread. */
3625 thread_dump_requested = TRUE;
3626 mono_gc_finalize_notify ();
3631 gint allocated; /* +1 so that refs [allocated] == NULL */
3635 typedef struct ref_stack RefStack;
3638 ref_stack_new (gint initial_size)
3642 initial_size = MAX (initial_size, 16) + 1;
3643 rs = g_new0 (RefStack, 1);
3644 rs->refs = g_new0 (gpointer, initial_size);
3645 rs->allocated = initial_size;
3650 ref_stack_destroy (gpointer ptr)
3652 RefStack *rs = (RefStack *)ptr;
3661 ref_stack_push (RefStack *rs, gpointer ptr)
3663 g_assert (rs != NULL);
3665 if (rs->bottom >= rs->allocated) {
3666 rs->refs = (void **)g_realloc (rs->refs, rs->allocated * 2 * sizeof (gpointer) + 1);
3667 rs->allocated <<= 1;
3668 rs->refs [rs->allocated] = NULL;
3670 rs->refs [rs->bottom++] = ptr;
3674 ref_stack_pop (RefStack *rs)
3676 if (rs == NULL || rs->bottom == 0)
3680 rs->refs [rs->bottom] = NULL;
3684 ref_stack_find (RefStack *rs, gpointer ptr)
3691 for (refs = rs->refs; refs && *refs; refs++) {
3699 * mono_thread_push_appdomain_ref:
3701 * Register that the current thread may have references to objects in domain
3702 * @domain on its stack. Each call to this function should be paired with a
3703 * call to pop_appdomain_ref.
3706 mono_thread_push_appdomain_ref (MonoDomain *domain)
3708 MonoInternalThread *thread = mono_thread_internal_current ();
3711 /* printf ("PUSH REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, domain->friendly_name); */
3712 SPIN_LOCK (thread->lock_thread_id);
3713 if (thread->appdomain_refs == NULL)
3714 thread->appdomain_refs = ref_stack_new (16);
3715 ref_stack_push ((RefStack *)thread->appdomain_refs, domain);
3716 SPIN_UNLOCK (thread->lock_thread_id);
3721 mono_thread_pop_appdomain_ref (void)
3723 MonoInternalThread *thread = mono_thread_internal_current ();
3726 /* printf ("POP REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, ((MonoDomain*)(thread->appdomain_refs->data))->friendly_name); */
3727 SPIN_LOCK (thread->lock_thread_id);
3728 ref_stack_pop ((RefStack *)thread->appdomain_refs);
3729 SPIN_UNLOCK (thread->lock_thread_id);
3734 mono_thread_internal_has_appdomain_ref (MonoInternalThread *thread, MonoDomain *domain)
3737 SPIN_LOCK (thread->lock_thread_id);
3738 res = ref_stack_find ((RefStack *)thread->appdomain_refs, domain);
3739 SPIN_UNLOCK (thread->lock_thread_id);
3744 mono_thread_has_appdomain_ref (MonoThread *thread, MonoDomain *domain)
3746 return mono_thread_internal_has_appdomain_ref (thread->internal_thread, domain);
3749 typedef struct abort_appdomain_data {
3750 struct wait_data wait;
3752 } abort_appdomain_data;
3755 collect_appdomain_thread (gpointer key, gpointer value, gpointer user_data)
3757 MonoInternalThread *thread = (MonoInternalThread*)value;
3758 abort_appdomain_data *data = (abort_appdomain_data*)user_data;
3759 MonoDomain *domain = data->domain;
3761 if (mono_thread_internal_has_appdomain_ref (thread, domain)) {
3762 /* printf ("ABORTING THREAD %p BECAUSE IT REFERENCES DOMAIN %s.\n", thread->tid, domain->friendly_name); */
3764 if(data->wait.num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS) {
3765 HANDLE handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3768 data->wait.handles [data->wait.num] = handle;
3769 data->wait.threads [data->wait.num] = thread;
3772 /* Just ignore the rest, we can't do anything with
3780 * mono_threads_abort_appdomain_threads:
3782 * Abort threads which has references to the given appdomain.
3785 mono_threads_abort_appdomain_threads (MonoDomain *domain, int timeout)
3787 #ifdef __native_client__
3791 abort_appdomain_data user_data;
3793 int orig_timeout = timeout;
3796 THREAD_DEBUG (g_message ("%s: starting abort", __func__));
3798 start_time = mono_msec_ticks ();
3800 mono_threads_lock ();
3802 user_data.domain = domain;
3803 user_data.wait.num = 0;
3804 /* This shouldn't take any locks */
3805 mono_g_hash_table_foreach (threads, collect_appdomain_thread, &user_data);
3806 mono_threads_unlock ();
3808 if (user_data.wait.num > 0) {
3809 /* Abort the threads outside the threads lock */
3810 for (i = 0; i < user_data.wait.num; ++i)
3811 mono_thread_internal_abort (user_data.wait.threads [i]);
3814 * We should wait for the threads either to abort, or to leave the
3815 * domain. We can't do the latter, so we wait with a timeout.
3817 wait_for_tids (&user_data.wait, 100);
3820 /* Update remaining time */
3821 timeout -= mono_msec_ticks () - start_time;
3822 start_time = mono_msec_ticks ();
3824 if (orig_timeout != -1 && timeout < 0)
3827 while (user_data.wait.num > 0);
3829 THREAD_DEBUG (g_message ("%s: abort done", __func__));
3835 clear_cached_culture (gpointer key, gpointer value, gpointer user_data)
3837 MonoInternalThread *thread = (MonoInternalThread*)value;
3838 MonoDomain *domain = (MonoDomain*)user_data;
3841 /* No locking needed here */
3842 /* FIXME: why no locking? writes to the cache are protected with synch_cs above */
3844 if (thread->cached_culture_info) {
3845 for (i = 0; i < NUM_CACHED_CULTURES * 2; ++i) {
3846 MonoObject *obj = mono_array_get (thread->cached_culture_info, MonoObject*, i);
3847 if (obj && obj->vtable->domain == domain)
3848 mono_array_set (thread->cached_culture_info, MonoObject*, i, NULL);
3854 * mono_threads_clear_cached_culture:
3856 * Clear the cached_current_culture from all threads if it is in the
3860 mono_threads_clear_cached_culture (MonoDomain *domain)
3862 mono_threads_lock ();
3863 mono_g_hash_table_foreach (threads, clear_cached_culture, domain);
3864 mono_threads_unlock ();
3868 * mono_thread_get_undeniable_exception:
3870 * Return an exception which needs to be raised when leaving a catch clause.
3871 * This is used for undeniable exception propagation.
3874 mono_thread_get_undeniable_exception (void)
3876 MonoInternalThread *thread = mono_thread_internal_current ();
3878 if (thread && thread->abort_exc && !is_running_protected_wrapper ()) {
3880 * FIXME: Clear the abort exception and return an AppDomainUnloaded
3881 * exception if the thread no longer references a dying appdomain.
3883 thread->abort_exc->trace_ips = NULL;
3884 thread->abort_exc->stack_trace = NULL;
3885 return thread->abort_exc;
3891 #if MONO_SMALL_CONFIG
3892 #define NUM_STATIC_DATA_IDX 4
3893 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
3897 #define NUM_STATIC_DATA_IDX 8
3898 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
3899 1024, 4096, 16384, 65536, 262144, 1048576, 4194304, 16777216
3903 static MonoBitSet *thread_reference_bitmaps [NUM_STATIC_DATA_IDX];
3904 static MonoBitSet *context_reference_bitmaps [NUM_STATIC_DATA_IDX];
3907 mark_slots (void *addr, MonoBitSet **bitmaps, MonoGCMarkFunc mark_func, void *gc_data)
3909 gpointer *static_data = (gpointer *)addr;
3911 for (int i = 0; i < NUM_STATIC_DATA_IDX; ++i) {
3912 void **ptr = (void **)static_data [i];
3917 MONO_BITSET_FOREACH (bitmaps [i], idx, {
3918 void **p = ptr + idx;
3921 mark_func ((MonoObject**)p, gc_data);
3927 mark_tls_slots (void *addr, MonoGCMarkFunc mark_func, void *gc_data)
3929 mark_slots (addr, thread_reference_bitmaps, mark_func, gc_data);
3933 mark_ctx_slots (void *addr, MonoGCMarkFunc mark_func, void *gc_data)
3935 mark_slots (addr, context_reference_bitmaps, mark_func, gc_data);
3939 * mono_alloc_static_data
3941 * Allocate memory blocks for storing threads or context static data
3944 mono_alloc_static_data (gpointer **static_data_ptr, guint32 offset, gboolean threadlocal)
3946 guint idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
3949 gpointer* static_data = *static_data_ptr;
3951 static MonoGCDescriptor tls_desc = MONO_GC_DESCRIPTOR_NULL;
3952 static MonoGCDescriptor ctx_desc = MONO_GC_DESCRIPTOR_NULL;
3954 if (mono_gc_user_markers_supported ()) {
3955 if (tls_desc == MONO_GC_DESCRIPTOR_NULL)
3956 tls_desc = mono_gc_make_root_descr_user (mark_tls_slots);
3958 if (ctx_desc == MONO_GC_DESCRIPTOR_NULL)
3959 ctx_desc = mono_gc_make_root_descr_user (mark_ctx_slots);
3962 static_data = (void **)mono_gc_alloc_fixed (static_data_size [0], threadlocal ? tls_desc : ctx_desc,
3963 threadlocal ? MONO_ROOT_SOURCE_THREAD_STATIC : MONO_ROOT_SOURCE_CONTEXT_STATIC,
3964 threadlocal ? "managed thread-static variables" : "managed context-static variables");
3965 *static_data_ptr = static_data;
3966 static_data [0] = static_data;
3969 for (i = 1; i <= idx; ++i) {
3970 if (static_data [i])
3973 if (mono_gc_user_markers_supported ())
3974 static_data [i] = g_malloc0 (static_data_size [i]);
3976 static_data [i] = mono_gc_alloc_fixed (static_data_size [i], MONO_GC_DESCRIPTOR_NULL,
3977 threadlocal ? MONO_ROOT_SOURCE_THREAD_STATIC : MONO_ROOT_SOURCE_CONTEXT_STATIC,
3978 threadlocal ? "managed thread-static variables" : "managed context-static variables");
3983 mono_free_static_data (gpointer* static_data)
3986 for (i = 1; i < NUM_STATIC_DATA_IDX; ++i) {
3987 gpointer p = static_data [i];
3991 * At this point, the static data pointer array is still registered with the
3992 * GC, so must ensure that mark_tls_slots() will not encounter any invalid
3993 * data. Freeing the individual arrays without first nulling their slots
3994 * would make it possible for mark_tls/ctx_slots() to encounter a pointer to
3995 * such an already freed array. See bug #13813.
3997 static_data [i] = NULL;
3998 mono_memory_write_barrier ();
3999 if (mono_gc_user_markers_supported ())
4002 mono_gc_free_fixed (p);
4004 mono_gc_free_fixed (static_data);
4008 * mono_init_static_data_info
4010 * Initializes static data counters
4012 static void mono_init_static_data_info (StaticDataInfo *static_data)
4014 static_data->idx = 0;
4015 static_data->offset = 0;
4016 static_data->freelist = NULL;
4020 * mono_alloc_static_data_slot
4022 * Generates an offset for static data. static_data contains the counters
4023 * used to generate it.
4026 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align)
4028 if (!static_data->idx && !static_data->offset) {
4030 * we use the first chunk of the first allocation also as
4031 * an array for the rest of the data
4033 static_data->offset = sizeof (gpointer) * NUM_STATIC_DATA_IDX;
4035 static_data->offset += align - 1;
4036 static_data->offset &= ~(align - 1);
4037 if (static_data->offset + size >= static_data_size [static_data->idx]) {
4038 static_data->idx ++;
4039 g_assert (size <= static_data_size [static_data->idx]);
4040 g_assert (static_data->idx < NUM_STATIC_DATA_IDX);
4041 static_data->offset = 0;
4043 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (static_data->idx, static_data->offset, 0);
4044 static_data->offset += size;
4049 * LOCKING: requires that threads_mutex is held
4052 context_adjust_static_data (MonoAppContext *ctx)
4054 if (context_static_info.offset || context_static_info.idx > 0) {
4055 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (context_static_info.idx, context_static_info.offset, 0);
4056 mono_alloc_static_data (&ctx->static_data, offset, FALSE);
4057 ctx->data->static_data = ctx->static_data;
4062 * LOCKING: requires that threads_mutex is held
4065 alloc_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
4067 MonoInternalThread *thread = (MonoInternalThread *)value;
4068 guint32 offset = GPOINTER_TO_UINT (user);
4070 mono_alloc_static_data (&(thread->static_data), offset, TRUE);
4074 * LOCKING: requires that threads_mutex is held
4077 alloc_context_static_data_helper (gpointer key, gpointer value, gpointer user)
4079 MonoAppContext *ctx = (MonoAppContext *) mono_gchandle_get_target (GPOINTER_TO_INT (key));
4084 guint32 offset = GPOINTER_TO_UINT (user);
4085 mono_alloc_static_data (&ctx->static_data, offset, FALSE);
4086 ctx->data->static_data = ctx->static_data;
4089 static StaticDataFreeList*
4090 search_slot_in_freelist (StaticDataInfo *static_data, guint32 size, guint32 align)
4092 StaticDataFreeList* prev = NULL;
4093 StaticDataFreeList* tmp = static_data->freelist;
4095 if (tmp->size == size) {
4097 prev->next = tmp->next;
4099 static_data->freelist = tmp->next;
4108 #if SIZEOF_VOID_P == 4
4115 update_reference_bitmap (MonoBitSet **sets, guint32 offset, uintptr_t *bitmap, int numbits)
4117 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4119 sets [idx] = mono_bitset_new (static_data_size [idx] / sizeof (uintptr_t), 0);
4120 MonoBitSet *rb = sets [idx];
4121 offset = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
4122 offset /= sizeof (uintptr_t);
4123 /* offset is now the bitmap offset */
4124 for (int i = 0; i < numbits; ++i) {
4125 if (bitmap [i / sizeof (uintptr_t)] & (ONE_P << (i & (sizeof (uintptr_t) * 8 -1))))
4126 mono_bitset_set_fast (rb, offset + i);
4131 clear_reference_bitmap (MonoBitSet **sets, guint32 offset, guint32 size)
4133 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4134 MonoBitSet *rb = sets [idx];
4135 offset = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
4136 offset /= sizeof (uintptr_t);
4137 /* offset is now the bitmap offset */
4138 for (int i = 0; i < size / sizeof (uintptr_t); i++)
4139 mono_bitset_clear_fast (rb, offset + i);
4143 mono_alloc_special_static_data (guint32 static_type, guint32 size, guint32 align, uintptr_t *bitmap, int numbits)
4145 g_assert (static_type == SPECIAL_STATIC_THREAD || static_type == SPECIAL_STATIC_CONTEXT);
4147 StaticDataInfo *info;
4150 if (static_type == SPECIAL_STATIC_THREAD) {
4151 info = &thread_static_info;
4152 sets = thread_reference_bitmaps;
4154 info = &context_static_info;
4155 sets = context_reference_bitmaps;
4158 mono_threads_lock ();
4160 StaticDataFreeList *item = search_slot_in_freelist (info, size, align);
4164 offset = item->offset;
4167 offset = mono_alloc_static_data_slot (info, size, align);
4170 update_reference_bitmap (sets, offset, bitmap, numbits);
4172 if (static_type == SPECIAL_STATIC_THREAD) {
4173 /* This can be called during startup */
4174 if (threads != NULL)
4175 mono_g_hash_table_foreach (threads, alloc_thread_static_data_helper, GUINT_TO_POINTER (offset));
4177 if (contexts != NULL)
4178 g_hash_table_foreach (contexts, alloc_context_static_data_helper, GUINT_TO_POINTER (offset));
4180 ACCESS_SPECIAL_STATIC_OFFSET (offset, type) = SPECIAL_STATIC_OFFSET_TYPE_CONTEXT;
4183 mono_threads_unlock ();
4189 mono_get_special_static_data_for_thread (MonoInternalThread *thread, guint32 offset)
4191 guint32 static_type = ACCESS_SPECIAL_STATIC_OFFSET (offset, type);
4193 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4194 return get_thread_static_data (thread, offset);
4196 return get_context_static_data (thread->current_appcontext, offset);
4201 mono_get_special_static_data (guint32 offset)
4203 return mono_get_special_static_data_for_thread (mono_thread_internal_current (), offset);
4212 * LOCKING: requires that threads_mutex is held
4215 free_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
4217 MonoInternalThread *thread = (MonoInternalThread *)value;
4218 OffsetSize *data = (OffsetSize *)user;
4219 int idx = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, index);
4220 int off = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, offset);
4223 if (!thread->static_data || !thread->static_data [idx])
4225 ptr = ((char*) thread->static_data [idx]) + off;
4226 mono_gc_bzero_atomic (ptr, data->size);
4230 * LOCKING: requires that threads_mutex is held
4233 free_context_static_data_helper (gpointer key, gpointer value, gpointer user)
4235 MonoAppContext *ctx = (MonoAppContext *) mono_gchandle_get_target (GPOINTER_TO_INT (key));
4240 OffsetSize *data = (OffsetSize *)user;
4241 int idx = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, index);
4242 int off = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, offset);
4245 if (!ctx->static_data || !ctx->static_data [idx])
4248 ptr = ((char*) ctx->static_data [idx]) + off;
4249 mono_gc_bzero_atomic (ptr, data->size);
4253 do_free_special_slot (guint32 offset, guint32 size)
4255 guint32 static_type = ACCESS_SPECIAL_STATIC_OFFSET (offset, type);
4257 StaticDataInfo *info;
4259 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4260 info = &thread_static_info;
4261 sets = thread_reference_bitmaps;
4263 info = &context_static_info;
4264 sets = context_reference_bitmaps;
4267 guint32 data_offset = offset;
4268 ACCESS_SPECIAL_STATIC_OFFSET (data_offset, type) = 0;
4269 OffsetSize data = { data_offset, size };
4271 clear_reference_bitmap (sets, data.offset, data.size);
4273 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4274 if (threads != NULL)
4275 mono_g_hash_table_foreach (threads, free_thread_static_data_helper, &data);
4277 if (contexts != NULL)
4278 g_hash_table_foreach (contexts, free_context_static_data_helper, &data);
4281 if (!mono_runtime_is_shutting_down ()) {
4282 StaticDataFreeList *item = g_new0 (StaticDataFreeList, 1);
4284 item->offset = offset;
4287 item->next = info->freelist;
4288 info->freelist = item;
4293 do_free_special (gpointer key, gpointer value, gpointer data)
4295 MonoClassField *field = (MonoClassField *)key;
4296 guint32 offset = GPOINTER_TO_UINT (value);
4299 size = mono_type_size (field->type, &align);
4300 do_free_special_slot (offset, size);
4304 mono_alloc_special_static_data_free (GHashTable *special_static_fields)
4306 mono_threads_lock ();
4308 g_hash_table_foreach (special_static_fields, do_free_special, NULL);
4310 mono_threads_unlock ();
4314 static void CALLBACK dummy_apc (ULONG_PTR param)
4320 * mono_thread_execute_interruption
4322 * Performs the operation that the requested thread state requires (abort,
4325 static MonoException*
4326 mono_thread_execute_interruption (void)
4328 MonoInternalThread *thread = mono_thread_internal_current ();
4329 MonoThread *sys_thread = mono_thread_current ();
4331 LOCK_THREAD (thread);
4333 /* MonoThread::interruption_requested can only be changed with atomics */
4334 if (InterlockedCompareExchange (&thread->interruption_requested, FALSE, TRUE)) {
4335 /* this will consume pending APC calls */
4337 WaitForSingleObjectEx (GetCurrentThread(), 0, TRUE);
4339 InterlockedDecrement (&thread_interruption_requested);
4341 /* Clear the interrupted flag of the thread so it can wait again */
4342 mono_thread_info_clear_self_interrupt ();
4345 /* If there's a pending exception and an AbortRequested, the pending exception takes precedence */
4346 if (sys_thread->pending_exception) {
4349 exc = sys_thread->pending_exception;
4350 sys_thread->pending_exception = NULL;
4352 UNLOCK_THREAD (thread);
4354 } else if ((thread->state & ThreadState_AbortRequested) != 0) {
4355 UNLOCK_THREAD (thread);
4356 g_assert (sys_thread->pending_exception == NULL);
4357 if (thread->abort_exc == NULL) {
4359 * This might be racy, but it has to be called outside the lock
4360 * since it calls managed code.
4362 MONO_OBJECT_SETREF (thread, abort_exc, mono_get_exception_thread_abort ());
4364 return thread->abort_exc;
4366 else if ((thread->state & ThreadState_SuspendRequested) != 0) {
4367 /* calls UNLOCK_THREAD (thread) */
4368 self_suspend_internal ();
4371 else if ((thread->state & ThreadState_StopRequested) != 0) {
4372 /* FIXME: do this through the JIT? */
4374 UNLOCK_THREAD (thread);
4376 mono_thread_exit ();
4378 } else if (thread->thread_interrupt_requested) {
4380 thread->thread_interrupt_requested = FALSE;
4381 UNLOCK_THREAD (thread);
4383 return(mono_get_exception_thread_interrupted ());
4386 UNLOCK_THREAD (thread);
4392 * mono_thread_request_interruption
4394 * A signal handler can call this method to request the interruption of a
4395 * thread. The result of the interruption will depend on the current state of
4396 * the thread. If the result is an exception that needs to be throw, it is
4397 * provided as return value.
4400 mono_thread_request_interruption (gboolean running_managed)
4402 MonoInternalThread *thread = mono_thread_internal_current ();
4404 /* The thread may already be stopping */
4409 if (thread->interrupt_on_stop &&
4410 thread->state & ThreadState_StopRequested &&
4411 thread->state & ThreadState_Background)
4414 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4416 InterlockedIncrement (&thread_interruption_requested);
4418 if (!running_managed || is_running_protected_wrapper ()) {
4419 /* Can't stop while in unmanaged code. Increase the global interruption
4420 request count. When exiting the unmanaged method the count will be
4421 checked and the thread will be interrupted. */
4423 /* this will awake the thread if it is in WaitForSingleObject
4425 /* Our implementation of this function ignores the func argument */
4427 QueueUserAPC ((PAPCFUNC)dummy_apc, thread->handle, (ULONG_PTR)NULL);
4429 mono_thread_info_self_interrupt ();
4434 return mono_thread_execute_interruption ();
4438 /*This function should be called by a thread after it has exited all of
4439 * its handle blocks at interruption time.*/
4441 mono_thread_resume_interruption (void)
4443 MonoInternalThread *thread = mono_thread_internal_current ();
4444 gboolean still_aborting;
4446 /* The thread may already be stopping */
4450 LOCK_THREAD (thread);
4451 still_aborting = (thread->state & (ThreadState_AbortRequested|ThreadState_StopRequested)) != 0;
4452 UNLOCK_THREAD (thread);
4454 /*This can happen if the protected block called Thread::ResetAbort*/
4455 if (!still_aborting)
4458 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4460 InterlockedIncrement (&thread_interruption_requested);
4462 mono_thread_info_self_interrupt ();
4464 return mono_thread_execute_interruption ();
4467 gboolean mono_thread_interruption_requested ()
4469 if (thread_interruption_requested) {
4470 MonoInternalThread *thread = mono_thread_internal_current ();
4471 /* The thread may already be stopping */
4473 return (thread->interruption_requested);
4478 static MonoException*
4479 mono_thread_interruption_checkpoint_request (gboolean bypass_abort_protection)
4481 MonoInternalThread *thread = mono_thread_internal_current ();
4483 /* The thread may already be stopping */
4487 if (thread->interruption_requested && (bypass_abort_protection || !is_running_protected_wrapper ())) {
4488 MonoException* exc = mono_thread_execute_interruption ();
4496 * Performs the interruption of the current thread, if one has been requested,
4497 * and the thread is not running a protected wrapper.
4498 * Return the exception which needs to be thrown, if any.
4501 mono_thread_interruption_checkpoint (void)
4503 return mono_thread_interruption_checkpoint_request (FALSE);
4507 * Performs the interruption of the current thread, if one has been requested.
4508 * Return the exception which needs to be thrown, if any.
4511 mono_thread_force_interruption_checkpoint_noraise (void)
4513 return mono_thread_interruption_checkpoint_request (TRUE);
4517 * mono_set_pending_exception:
4519 * Set the pending exception of the current thread to EXC.
4520 * The exception will be thrown when execution returns to managed code.
4523 mono_set_pending_exception (MonoException *exc)
4525 MonoThread *thread = mono_thread_current ();
4527 /* The thread may already be stopping */
4531 MONO_OBJECT_SETREF (thread, pending_exception, exc);
4533 mono_thread_request_interruption (FALSE);
4537 * mono_thread_interruption_request_flag:
4539 * Returns the address of a flag that will be non-zero if an interruption has
4540 * been requested for a thread. The thread to interrupt may not be the current
4541 * thread, so an additional call to mono_thread_interruption_requested() or
4542 * mono_thread_interruption_checkpoint() is allways needed if the flag is not
4545 gint32* mono_thread_interruption_request_flag ()
4547 return &thread_interruption_requested;
4551 mono_thread_init_apartment_state (void)
4554 MonoInternalThread* thread = mono_thread_internal_current ();
4556 /* Positive return value indicates success, either
4557 * S_OK if this is first CoInitialize call, or
4558 * S_FALSE if CoInitialize already called, but with same
4559 * threading model. A negative value indicates failure,
4560 * probably due to trying to change the threading model.
4562 if (CoInitializeEx(NULL, (thread->apartment_state == ThreadApartmentState_STA)
4563 ? COINIT_APARTMENTTHREADED
4564 : COINIT_MULTITHREADED) < 0) {
4565 thread->apartment_state = ThreadApartmentState_Unknown;
4571 mono_thread_cleanup_apartment_state (void)
4574 MonoInternalThread* thread = mono_thread_internal_current ();
4576 if (thread && thread->apartment_state != ThreadApartmentState_Unknown) {
4583 mono_thread_set_state (MonoInternalThread *thread, MonoThreadState state)
4585 LOCK_THREAD (thread);
4586 thread->state |= state;
4587 UNLOCK_THREAD (thread);
4591 * mono_thread_test_and_set_state:
4593 * Test if current state of @thread include @test. If it does not, OR @set into the state.
4595 * Returns TRUE is @set was OR'd in.
4598 mono_thread_test_and_set_state (MonoInternalThread *thread, MonoThreadState test, MonoThreadState set)
4600 LOCK_THREAD (thread);
4602 if ((thread->state & test) != 0) {
4603 UNLOCK_THREAD (thread);
4607 thread->state |= set;
4608 UNLOCK_THREAD (thread);
4614 mono_thread_clr_state (MonoInternalThread *thread, MonoThreadState state)
4616 LOCK_THREAD (thread);
4617 thread->state &= ~state;
4618 UNLOCK_THREAD (thread);
4622 mono_thread_test_state (MonoInternalThread *thread, MonoThreadState test)
4624 gboolean ret = FALSE;
4626 LOCK_THREAD (thread);
4628 if ((thread->state & test) != 0) {
4632 UNLOCK_THREAD (thread);
4637 static gboolean has_tls_get = FALSE;
4640 mono_runtime_set_has_tls_get (gboolean val)
4646 mono_runtime_has_tls_get (void)
4652 self_interrupt_thread (void *_unused)
4654 MonoThreadInfo *info = mono_thread_info_current ();
4655 MonoException *exc = mono_thread_execute_interruption ();
4656 if (exc) /*We must use _with_context since we didn't trampoline into the runtime*/
4657 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. */
4658 g_assert_not_reached (); /*this MUST not happen since we can't resume from an async call*/
4662 mono_jit_info_match (MonoJitInfo *ji, gpointer ip)
4666 return ji->code_start <= ip && (char*)ip < (char*)ji->code_start + ji->code_size;
4670 last_managed (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
4672 MonoJitInfo **dest = (MonoJitInfo **)data;
4678 mono_thread_info_get_last_managed (MonoThreadInfo *info)
4680 MonoJitInfo *ji = NULL;
4685 * The suspended thread might be holding runtime locks. Make sure we don't try taking
4686 * any runtime locks while unwinding. In coop case we shouldn't safepoint in regions
4687 * where we hold runtime locks.
4689 if (!mono_threads_is_coop_enabled ())
4690 mono_thread_info_set_is_async_context (TRUE);
4691 mono_get_eh_callbacks ()->mono_walk_stack_with_state (last_managed, mono_thread_info_get_suspend_state (info), MONO_UNWIND_SIGNAL_SAFE, &ji);
4692 if (!mono_threads_is_coop_enabled ())
4693 mono_thread_info_set_is_async_context (FALSE);
4698 MonoInternalThread *thread;
4699 gboolean install_async_abort;
4700 MonoThreadInfoInterruptToken *interrupt_token;
4703 static SuspendThreadResult
4704 async_abort_critical (MonoThreadInfo *info, gpointer ud)
4706 AbortThreadData *data = (AbortThreadData *)ud;
4707 MonoInternalThread *thread = data->thread;
4708 MonoJitInfo *ji = NULL;
4709 gboolean protected_wrapper;
4710 gboolean running_managed;
4712 if (mono_get_eh_callbacks ()->mono_install_handler_block_guard (mono_thread_info_get_suspend_state (info)))
4713 return MonoResumeThread;
4716 The target thread is running at least one protected block, which must not be interrupted, so we give up.
4717 The protected block code will give them a chance when appropriate.
4719 if (thread->abort_protected_block_count)
4720 return MonoResumeThread;
4722 /*someone is already interrupting it*/
4723 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4724 return MonoResumeThread;
4726 InterlockedIncrement (&thread_interruption_requested);
4728 ji = mono_thread_info_get_last_managed (info);
4729 protected_wrapper = ji && !ji->is_trampoline && !ji->async && mono_threads_is_critical_method (mono_jit_info_get_method (ji));
4730 running_managed = mono_jit_info_match (ji, MONO_CONTEXT_GET_IP (&mono_thread_info_get_suspend_state (info)->ctx));
4732 if (!protected_wrapper && running_managed) {
4733 /*We are in managed code*/
4734 /*Set the thread to call */
4735 if (data->install_async_abort)
4736 mono_thread_info_setup_async_call (info, self_interrupt_thread, NULL);
4737 return MonoResumeThread;
4740 * This will cause waits to be broken.
4741 * It will also prevent the thread from entering a wait, so if the thread returns
4742 * from the wait before it receives the abort signal, it will just spin in the wait
4743 * functions in the io-layer until the signal handler calls QueueUserAPC which will
4746 data->interrupt_token = mono_thread_info_prepare_interrupt (info);
4748 return MonoResumeThread;
4753 async_abort_internal (MonoInternalThread *thread, gboolean install_async_abort)
4755 AbortThreadData data;
4757 g_assert (thread != mono_thread_internal_current ());
4759 data.thread = thread;
4760 data.install_async_abort = install_async_abort;
4761 data.interrupt_token = NULL;
4763 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), TRUE, async_abort_critical, &data);
4764 if (data.interrupt_token)
4765 mono_thread_info_finish_interrupt (data.interrupt_token);
4766 /*FIXME we need to wait for interruption to complete -- figure out how much into interruption we should wait for here*/
4770 self_abort_internal (MonoError *error)
4774 mono_error_init (error);
4776 /* FIXME this is insanely broken, it doesn't cause interruption to happen synchronously
4777 * since passing FALSE to mono_thread_request_interruption makes sure it returns NULL */
4780 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.
4782 exc = mono_thread_request_interruption (TRUE);
4784 mono_error_set_exception_instance (error, exc);
4786 mono_thread_info_self_interrupt ();
4790 MonoInternalThread *thread;
4792 MonoThreadInfoInterruptToken *interrupt_token;
4793 } SuspendThreadData;
4795 static SuspendThreadResult
4796 async_suspend_critical (MonoThreadInfo *info, gpointer ud)
4798 SuspendThreadData *data = (SuspendThreadData *)ud;
4799 MonoInternalThread *thread = data->thread;
4800 MonoJitInfo *ji = NULL;
4801 gboolean protected_wrapper;
4802 gboolean running_managed;
4804 ji = mono_thread_info_get_last_managed (info);
4805 protected_wrapper = ji && !ji->is_trampoline && !ji->async && mono_threads_is_critical_method (mono_jit_info_get_method (ji));
4806 running_managed = mono_jit_info_match (ji, MONO_CONTEXT_GET_IP (&mono_thread_info_get_suspend_state (info)->ctx));
4808 if (running_managed && !protected_wrapper) {
4809 thread->state &= ~ThreadState_SuspendRequested;
4810 thread->state |= ThreadState_Suspended;
4811 return KeepSuspended;
4813 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 0)
4814 InterlockedIncrement (&thread_interruption_requested);
4815 if (data->interrupt)
4816 data->interrupt_token = mono_thread_info_prepare_interrupt ((MonoThreadInfo *)thread->thread_info);
4818 return MonoResumeThread;
4822 /* LOCKING: called with @thread synch_cs held, and releases it */
4824 async_suspend_internal (MonoInternalThread *thread, gboolean interrupt)
4826 SuspendThreadData data;
4828 g_assert (thread != mono_thread_internal_current ());
4830 data.thread = thread;
4831 data.interrupt = interrupt;
4832 data.interrupt_token = NULL;
4834 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), interrupt, async_suspend_critical, &data);
4835 if (data.interrupt_token)
4836 mono_thread_info_finish_interrupt (data.interrupt_token);
4838 UNLOCK_THREAD (thread);
4841 /* LOCKING: called with @thread synch_cs held, and releases it */
4843 self_suspend_internal (void)
4845 MonoInternalThread *thread;
4847 thread = mono_thread_internal_current ();
4849 mono_thread_info_begin_self_suspend ();
4850 thread->state &= ~ThreadState_SuspendRequested;
4851 thread->state |= ThreadState_Suspended;
4853 UNLOCK_THREAD (thread);
4855 mono_thread_info_end_self_suspend ();
4859 * mono_thread_is_foreign:
4860 * @thread: the thread to query
4862 * This function allows one to determine if a thread was created by the mono runtime and has
4863 * a well defined lifecycle or it's a foreigh one, created by the native environment.
4865 * Returns: TRUE if @thread was not created by the runtime.
4868 mono_thread_is_foreign (MonoThread *thread)
4870 MonoThreadInfo *info = (MonoThreadInfo *)thread->internal_thread->thread_info;
4871 return info->runtime_thread == FALSE;
4875 * mono_add_joinable_thread:
4877 * Add TID to the list of joinable threads.
4878 * LOCKING: Acquires the threads lock.
4881 mono_threads_add_joinable_thread (gpointer tid)
4885 * We cannot detach from threads because it causes problems like
4886 * 2fd16f60/r114307. So we collect them and join them when
4887 * we have time (in he finalizer thread).
4889 joinable_threads_lock ();
4890 if (!joinable_threads)
4891 joinable_threads = g_hash_table_new (NULL, NULL);
4892 g_hash_table_insert (joinable_threads, tid, tid);
4893 joinable_thread_count ++;
4894 joinable_threads_unlock ();
4896 mono_gc_finalize_notify ();
4901 * mono_threads_join_threads:
4903 * Join all joinable threads. This is called from the finalizer thread.
4904 * LOCKING: Acquires the threads lock.
4907 mono_threads_join_threads (void)
4910 GHashTableIter iter;
4917 if (!joinable_thread_count)
4921 joinable_threads_lock ();
4923 if (g_hash_table_size (joinable_threads)) {
4924 g_hash_table_iter_init (&iter, joinable_threads);
4925 g_hash_table_iter_next (&iter, &key, (void**)&tid);
4926 thread = (pthread_t)tid;
4927 g_hash_table_remove (joinable_threads, key);
4928 joinable_thread_count --;
4931 joinable_threads_unlock ();
4933 if (thread != pthread_self ()) {
4935 /* This shouldn't block */
4936 pthread_join (thread, NULL);
4949 * Wait for thread TID to exit.
4950 * LOCKING: Acquires the threads lock.
4953 mono_thread_join (gpointer tid)
4957 gboolean found = FALSE;
4959 joinable_threads_lock ();
4960 if (!joinable_threads)
4961 joinable_threads = g_hash_table_new (NULL, NULL);
4962 if (g_hash_table_lookup (joinable_threads, tid)) {
4963 g_hash_table_remove (joinable_threads, tid);
4964 joinable_thread_count --;
4967 joinable_threads_unlock ();
4970 thread = (pthread_t)tid;
4972 pthread_join (thread, NULL);
4978 mono_thread_internal_check_for_interruption_critical (MonoInternalThread *thread)
4980 if ((thread->state & (ThreadState_StopRequested | ThreadState_SuspendRequested)) != 0)
4981 mono_thread_interruption_checkpoint ();
4985 mono_thread_internal_unhandled_exception (MonoObject* exc)
4987 MonoClass *klass = exc->vtable->klass;
4988 if (is_threadabort_exception (klass)) {
4989 mono_thread_internal_reset_abort (mono_thread_internal_current ());
4990 } else if (!is_appdomainunloaded_exception (klass)
4991 && mono_runtime_unhandled_exception_policy_get () == MONO_UNHANDLED_POLICY_CURRENT) {
4992 mono_unhandled_exception (exc);
4993 if (mono_environment_exitcode_get () == 1) {
4994 mono_environment_exitcode_set (255);
4995 mono_invoke_unhandled_exception_hook (exc);
4996 g_assert_not_reached ();
5002 ves_icall_System_Threading_Thread_GetStackTraces (MonoArray **out_threads, MonoArray **out_stack_traces)
5005 mono_threads_get_thread_dump (out_threads, out_stack_traces, &error);
5006 mono_error_set_pending_exception (&error);
5010 * mono_threads_attach_coop: called by native->managed wrappers
5014 * - @return: the original domain which needs to be restored, or NULL.
5017 * - @dummy: contains the original domain
5018 * - @return: a cookie containing current MonoThreadInfo*.
5021 mono_threads_attach_coop (MonoDomain *domain, gpointer *dummy)
5024 gboolean fresh_thread = FALSE;
5027 /* Happens when called from AOTed code which is only used in the root domain. */
5028 domain = mono_get_root_domain ();
5033 /* On coop, when we detached, we moved the thread from RUNNING->BLOCKING.
5034 * If we try to reattach we do a BLOCKING->RUNNING transition. If the thread
5035 * is fresh, mono_thread_attach() will do a STARTING->RUNNING transition so
5036 * we're only responsible for making the cookie. */
5037 if (mono_threads_is_coop_enabled ()) {
5038 MonoThreadInfo *info = mono_thread_info_current_unchecked ();
5039 fresh_thread = !info || !mono_thread_info_is_live (info);
5042 if (!mono_thread_internal_current ()) {
5043 mono_thread_attach_full (domain, FALSE);
5046 mono_thread_set_state (mono_thread_internal_current (), ThreadState_Background);
5049 orig = mono_domain_get ();
5051 mono_domain_set (domain, TRUE);
5053 if (!mono_threads_is_coop_enabled ())
5054 return orig != domain ? orig : NULL;
5058 /* mono_thread_attach put the thread in RUNNING mode from STARTING, but we need to
5059 * return the right cookie. */
5060 return mono_threads_enter_gc_unsafe_region_cookie ();
5063 /* thread state (BLOCKING|RUNNING) -> RUNNING */
5064 return mono_threads_enter_gc_unsafe_region (dummy);
5069 * mono_threads_detach_coop: called by native->managed wrappers
5072 * - @cookie: the original domain which needs to be restored, or NULL.
5076 * - @cookie: contains current MonoThreadInfo* if it was in BLOCKING mode, NULL otherwise
5077 * - @dummy: contains the original domain
5080 mono_threads_detach_coop (gpointer cookie, gpointer *dummy)
5082 MonoDomain *domain, *orig;
5084 if (!mono_threads_is_coop_enabled ()) {
5085 orig = (MonoDomain*) cookie;
5087 mono_domain_set (orig, TRUE);
5089 orig = (MonoDomain*) *dummy;
5091 domain = mono_domain_get ();
5094 /* it won't do anything if cookie is NULL
5095 * thread state RUNNING -> (RUNNING|BLOCKING) */
5096 mono_threads_exit_gc_unsafe_region (cookie, dummy);
5098 if (orig != domain) {
5100 mono_domain_unset ();
5102 mono_domain_set (orig, TRUE);
5108 mono_threads_begin_abort_protected_block (void)
5110 MonoInternalThread *thread;
5112 thread = mono_thread_internal_current ();
5113 ++thread->abort_protected_block_count;
5114 mono_memory_barrier ();
5118 mono_threads_end_abort_protected_block (void)
5120 MonoInternalThread *thread;
5122 thread = mono_thread_internal_current ();
5124 mono_memory_barrier ();
5125 --thread->abort_protected_block_count;
5129 mono_thread_try_resume_interruption (void)
5131 MonoInternalThread *thread;
5133 thread = mono_thread_internal_current ();
5134 if (thread->abort_protected_block_count || mono_get_eh_callbacks ()->mono_current_thread_has_handle_block_guard ())
5137 return mono_thread_resume_interruption ();
5140 /* Returns TRUE if the current thread is ready to be interrupted. */
5142 mono_threads_is_ready_to_be_interrupted (void)
5144 MonoInternalThread *thread;
5146 thread = mono_thread_internal_current ();
5147 LOCK_THREAD (thread);
5148 if (thread->state & (MonoThreadState)(ThreadState_StopRequested | ThreadState_SuspendRequested | ThreadState_AbortRequested)) {
5149 UNLOCK_THREAD (thread);
5153 if (thread->abort_protected_block_count || mono_get_eh_callbacks ()->mono_current_thread_has_handle_block_guard ()) {
5154 UNLOCK_THREAD (thread);
5158 UNLOCK_THREAD (thread);
5163 mono_thread_internal_describe (MonoInternalThread *internal, GString *text)
5165 MonoThreadInfo *info;
5167 g_string_append_printf (text, ", thread handle : %p", internal->handle);
5169 info = (MonoThreadInfo*) internal->thread_info;
5173 g_string_append (text, ", state : ");
5174 mono_thread_info_describe_interrupt_token (info, text);
5176 if (info->owned_mutexes) {
5179 g_string_append (text, ", owns : [");
5180 for (i = 0; i < info->owned_mutexes->len; i++)
5181 g_string_append_printf (text, i == 0 ? "%p" : ", %p", g_ptr_array_index (info->owned_mutexes, i));
5182 g_string_append (text, "]");