2 * threads.c: Thread support internal calls
5 * Dick Porter (dick@ximian.com)
6 * Paolo Molaro (lupus@ximian.com)
7 * Patrik Torstensson (patrik.torstensson@labs2.com)
9 * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
10 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
11 * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
12 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
20 #include <mono/metadata/object.h>
21 #include <mono/metadata/domain-internals.h>
22 #include <mono/metadata/profiler-private.h>
23 #include <mono/metadata/threads.h>
24 #include <mono/metadata/threads-types.h>
25 #include <mono/metadata/exception.h>
26 #include <mono/metadata/environment.h>
27 #include <mono/metadata/monitor.h>
28 #include <mono/metadata/gc-internals.h>
29 #include <mono/metadata/marshal.h>
30 #include <mono/metadata/runtime.h>
31 #include <mono/io-layer/io-layer.h>
32 #include <mono/metadata/object-internals.h>
33 #include <mono/metadata/mono-debug-debugger.h>
34 #include <mono/utils/monobitset.h>
35 #include <mono/utils/mono-compiler.h>
36 #include <mono/utils/mono-mmap.h>
37 #include <mono/utils/mono-membar.h>
38 #include <mono/utils/mono-time.h>
39 #include <mono/utils/mono-threads.h>
40 #include <mono/utils/mono-threads-coop.h>
41 #include <mono/utils/hazard-pointer.h>
42 #include <mono/utils/mono-tls.h>
43 #include <mono/utils/atomic.h>
44 #include <mono/utils/mono-memory-model.h>
45 #include <mono/utils/mono-threads-coop.h>
46 #include <mono/utils/mono-error-internals.h>
47 #include <mono/utils/os-event.h>
48 #include <mono/utils/mono-threads-debug.h>
49 #include <mono/metadata/w32handle.h>
50 #include <mono/metadata/w32event.h>
51 #include <mono/metadata/w32mutex.h>
53 #include <mono/metadata/gc-internals.h>
54 #include <mono/metadata/reflection-internals.h>
55 #include <mono/metadata/abi-details.h>
61 #if defined(HOST_WIN32)
65 #if defined(PLATFORM_ANDROID) && !defined(TARGET_ARM64) && !defined(TARGET_AMD64)
66 #define USE_TKILL_ON_ANDROID 1
69 #ifdef PLATFORM_ANDROID
72 #ifdef USE_TKILL_ON_ANDROID
73 extern int tkill (pid_t tid, int signal);
77 /*#define THREAD_DEBUG(a) do { a; } while (0)*/
78 #define THREAD_DEBUG(a)
79 /*#define THREAD_WAIT_DEBUG(a) do { a; } while (0)*/
80 #define THREAD_WAIT_DEBUG(a)
81 /*#define LIBGC_DEBUG(a) do { a; } while (0)*/
82 #define LIBGC_DEBUG(a)
84 #define SPIN_TRYLOCK(i) (InterlockedCompareExchange (&(i), 1, 0) == 0)
85 #define SPIN_LOCK(i) do { \
86 if (SPIN_TRYLOCK (i)) \
90 #define SPIN_UNLOCK(i) i = 0
92 #define LOCK_THREAD(thread) lock_thread((thread))
93 #define UNLOCK_THREAD(thread) unlock_thread((thread))
105 typedef struct _StaticDataFreeList StaticDataFreeList;
106 struct _StaticDataFreeList {
107 StaticDataFreeList *next;
115 StaticDataFreeList *freelist;
118 /* Number of cached culture objects in the MonoThread->cached_culture_info array
119 * (per-type): we use the first NUM entries for CultureInfo and the last for
120 * UICultureInfo. So the size of the array is really NUM_CACHED_CULTURES * 2.
122 #define NUM_CACHED_CULTURES 4
123 #define CULTURES_START_IDX 0
124 #define UICULTURES_START_IDX NUM_CACHED_CULTURES
126 /* Controls access to the 'threads' hash table */
127 static void mono_threads_lock (void);
128 static void mono_threads_unlock (void);
129 static MonoCoopMutex threads_mutex;
131 /* Controls access to the 'joinable_threads' hash table */
132 #define joinable_threads_lock() mono_os_mutex_lock (&joinable_threads_mutex)
133 #define joinable_threads_unlock() mono_os_mutex_unlock (&joinable_threads_mutex)
134 static mono_mutex_t joinable_threads_mutex;
136 /* Holds current status of static data heap */
137 static StaticDataInfo thread_static_info;
138 static StaticDataInfo context_static_info;
140 /* The hash of existing threads (key is thread ID, value is
141 * MonoInternalThread*) that need joining before exit
143 static MonoGHashTable *threads=NULL;
145 /* List of app context GC handles.
146 * Added to from ves_icall_System_Runtime_Remoting_Contexts_Context_RegisterContext ().
148 static GHashTable *contexts = NULL;
150 /* Cleanup queue for contexts. */
151 static MonoReferenceQueue *context_queue;
154 * Threads which are starting up and they are not in the 'threads' hash yet.
155 * When mono_thread_attach_internal is called for a thread, it will be removed from this hash table.
156 * Protected by mono_threads_lock ().
158 static MonoGHashTable *threads_starting_up = NULL;
160 /* The TLS key that holds the MonoObject assigned to each thread */
161 static MonoNativeTlsKey current_object_key;
164 /* Protected by the threads lock */
165 static GHashTable *joinable_threads;
166 static int joinable_thread_count;
168 #ifdef MONO_HAVE_FAST_TLS
169 /* we need to use both the Tls* functions and __thread because
170 * the gc needs to see all the threads
172 MONO_FAST_TLS_DECLARE(tls_current_object);
173 #define SET_CURRENT_OBJECT(x) do { \
174 MONO_FAST_TLS_SET (tls_current_object, x); \
175 mono_native_tls_set_value (current_object_key, x); \
177 #define GET_CURRENT_OBJECT() ((MonoInternalThread*) MONO_FAST_TLS_GET (tls_current_object))
179 #define SET_CURRENT_OBJECT(x) mono_native_tls_set_value (current_object_key, x)
180 #define GET_CURRENT_OBJECT() (MonoInternalThread*) mono_native_tls_get_value (current_object_key)
183 /* function called at thread start */
184 static MonoThreadStartCB mono_thread_start_cb = NULL;
186 /* function called at thread attach */
187 static MonoThreadAttachCB mono_thread_attach_cb = NULL;
189 /* function called at thread cleanup */
190 static MonoThreadCleanupFunc mono_thread_cleanup_fn = NULL;
192 /* The default stack size for each thread */
193 static guint32 default_stacksize = 0;
194 #define default_stacksize_for_thread(thread) ((thread)->stack_size? (thread)->stack_size: default_stacksize)
196 static void context_adjust_static_data (MonoAppContext *ctx);
197 static void mono_free_static_data (gpointer* static_data);
198 static void mono_init_static_data_info (StaticDataInfo *static_data);
199 static guint32 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align);
200 static gboolean mono_thread_resume (MonoInternalThread* thread);
201 static void async_abort_internal (MonoInternalThread *thread, gboolean install_async_abort);
202 static void self_abort_internal (MonoError *error);
203 static void async_suspend_internal (MonoInternalThread *thread, gboolean interrupt);
204 static void self_suspend_internal (void);
206 static MonoException* mono_thread_execute_interruption (void);
207 static void ref_stack_destroy (gpointer rs);
209 /* Spin lock for InterlockedXXX 64 bit functions */
210 #define mono_interlocked_lock() mono_os_mutex_lock (&interlocked_mutex)
211 #define mono_interlocked_unlock() mono_os_mutex_unlock (&interlocked_mutex)
212 static mono_mutex_t interlocked_mutex;
214 /* global count of thread interruptions requested */
215 static gint32 thread_interruption_requested = 0;
217 /* Event signaled when a thread changes its background mode */
218 static MonoOSEvent background_change_event;
220 static gboolean shutting_down = FALSE;
222 static gint32 managed_thread_id_counter = 0;
224 /* Class lazy loading functions */
225 static GENERATE_GET_CLASS_WITH_CACHE (appdomain_unloaded_exception, System, AppDomainUnloadedException)
228 mono_threads_lock (void)
230 mono_locks_coop_acquire (&threads_mutex, ThreadsLock);
234 mono_threads_unlock (void)
236 mono_locks_coop_release (&threads_mutex, ThreadsLock);
241 get_next_managed_thread_id (void)
243 return InterlockedIncrement (&managed_thread_id_counter);
247 mono_thread_get_tls_key (void)
249 return current_object_key;
253 mono_thread_get_tls_offset (void)
258 if (current_object_key)
259 offset = current_object_key;
261 MONO_THREAD_VAR_OFFSET (tls_current_object,offset);
266 static inline MonoNativeThreadId
267 thread_get_tid (MonoInternalThread *thread)
269 /* We store the tid as a guint64 to keep the object layout constant between platforms */
270 return MONO_UINT_TO_NATIVE_THREAD_ID (thread->tid);
273 static void ensure_synch_cs_set (MonoInternalThread *thread)
275 MonoCoopMutex *synch_cs;
277 if (thread->synch_cs != NULL) {
281 synch_cs = g_new0 (MonoCoopMutex, 1);
282 mono_coop_mutex_init_recursive (synch_cs);
284 if (InterlockedCompareExchangePointer ((gpointer *)&thread->synch_cs,
285 synch_cs, NULL) != NULL) {
286 /* Another thread must have installed this CS */
287 mono_coop_mutex_destroy (synch_cs);
293 lock_thread (MonoInternalThread *thread)
295 if (!thread->synch_cs)
296 ensure_synch_cs_set (thread);
298 g_assert (thread->synch_cs);
300 mono_coop_mutex_lock (thread->synch_cs);
304 unlock_thread (MonoInternalThread *thread)
306 mono_coop_mutex_unlock (thread->synch_cs);
309 static inline gboolean
310 is_appdomainunloaded_exception (MonoClass *klass)
312 return klass == mono_class_get_appdomain_unloaded_exception_class ();
315 static inline gboolean
316 is_threadabort_exception (MonoClass *klass)
318 return klass == mono_defaults.threadabortexception_class;
322 * NOTE: this function can be called also for threads different from the current one:
323 * make sure no code called from it will ever assume it is run on the thread that is
324 * getting cleaned up.
326 static void thread_cleanup (MonoInternalThread *thread)
330 g_assert (thread != NULL);
332 if (thread->abort_state_handle) {
333 mono_gchandle_free (thread->abort_state_handle);
334 thread->abort_state_handle = 0;
336 thread->abort_exc = NULL;
337 thread->current_appcontext = NULL;
340 * This is necessary because otherwise we might have
341 * cross-domain references which will not get cleaned up when
342 * the target domain is unloaded.
344 if (thread->cached_culture_info) {
346 for (i = 0; i < NUM_CACHED_CULTURES * 2; ++i)
347 mono_array_set (thread->cached_culture_info, MonoObject*, i, NULL);
351 * thread->synch_cs can be NULL if this was called after
352 * ves_icall_System_Threading_InternalThread_Thread_free_internal.
353 * This can happen only during shutdown.
354 * The shutting_down flag is not always set, so we can't assert on it.
356 if (thread->synch_cs)
357 LOCK_THREAD (thread);
359 thread->state |= ThreadState_Stopped;
360 thread->state &= ~ThreadState_Background;
362 if (thread->synch_cs)
363 UNLOCK_THREAD (thread);
366 An interruption request has leaked to cleanup. Adjust the global counter.
368 This can happen is the abort source thread finds the abortee (this) thread
369 in unmanaged code. If this thread never trips back to managed code or check
370 the local flag it will be left set and positively unbalance the global counter.
372 Leaving the counter unbalanced will cause a performance degradation since all threads
373 will now keep checking their local flags all the time.
375 if (InterlockedExchange (&thread->interruption_requested, 0))
376 InterlockedDecrement (&thread_interruption_requested);
378 mono_threads_lock ();
382 } else if (mono_g_hash_table_lookup (threads, (gpointer)thread->tid) != thread) {
383 /* We have to check whether the thread object for the
384 * tid is still the same in the table because the
385 * thread might have been destroyed and the tid reused
386 * in the meantime, in which case the tid would be in
387 * the table, but with another thread object.
391 mono_g_hash_table_remove (threads, (gpointer)thread->tid);
395 mono_threads_unlock ();
397 /* Don't close the handle here, wait for the object finalizer
398 * to do it. Otherwise, the following race condition applies:
400 * 1) Thread exits (and thread_cleanup() closes the handle)
402 * 2) Some other handle is reassigned the same slot
404 * 3) Another thread tries to join the first thread, and
405 * blocks waiting for the reassigned handle to be signalled
406 * (which might never happen). This is possible, because the
407 * thread calling Join() still has a reference to the first
411 /* if the thread is not in the hash it has been removed already */
413 if (thread == mono_thread_internal_current ()) {
414 mono_domain_unset ();
415 mono_memory_barrier ();
417 if (mono_thread_cleanup_fn)
418 mono_thread_cleanup_fn (thread_get_tid (thread));
421 mono_release_type_locks (thread);
423 /* Can happen when we attach the profiler helper thread in order to heapshot. */
424 if (!mono_thread_info_lookup (MONO_UINT_TO_NATIVE_THREAD_ID (thread->tid))->tools_thread)
425 mono_profiler_thread_end (thread->tid);
427 mono_hazard_pointer_clear (mono_hazard_pointer_get (), 1);
429 if (thread == mono_thread_internal_current ()) {
431 * This will signal async signal handlers that the thread has exited.
432 * The profiler callback needs this to be set, so it cannot be done earlier.
434 mono_domain_unset ();
435 mono_memory_barrier ();
438 if (thread == mono_thread_internal_current ())
439 mono_thread_pop_appdomain_ref ();
441 thread->cached_culture_info = NULL;
443 mono_free_static_data (thread->static_data);
444 thread->static_data = NULL;
445 ref_stack_destroy (thread->appdomain_refs);
446 thread->appdomain_refs = NULL;
448 if (mono_thread_cleanup_fn)
449 mono_thread_cleanup_fn (thread_get_tid (thread));
451 if (mono_gc_is_moving ()) {
452 MONO_GC_UNREGISTER_ROOT (thread->thread_pinning_ref);
453 thread->thread_pinning_ref = NULL;
456 g_assert (thread->suspended);
457 mono_os_event_destroy (thread->suspended);
458 g_free (thread->suspended);
459 thread->suspended = NULL;
463 * A special static data offset (guint32) consists of 3 parts:
465 * [0] 6-bit index into the array of chunks.
466 * [6] 25-bit offset into the array.
467 * [31] Bit indicating thread or context static.
472 #if G_BYTE_ORDER != G_LITTLE_ENDIAN
483 } SpecialStaticOffset;
485 #define SPECIAL_STATIC_OFFSET_TYPE_THREAD 0
486 #define SPECIAL_STATIC_OFFSET_TYPE_CONTEXT 1
488 #define MAKE_SPECIAL_STATIC_OFFSET(index, offset, type) \
489 ((SpecialStaticOffset) { .fields = { (index), (offset), (type) } }.raw)
490 #define ACCESS_SPECIAL_STATIC_OFFSET(x,f) \
491 (((SpecialStaticOffset *) &(x))->fields.f)
494 get_thread_static_data (MonoInternalThread *thread, guint32 offset)
496 g_assert (ACCESS_SPECIAL_STATIC_OFFSET (offset, type) == SPECIAL_STATIC_OFFSET_TYPE_THREAD);
498 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
499 int off = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
501 return ((char *) thread->static_data [idx]) + off;
505 get_context_static_data (MonoAppContext *ctx, guint32 offset)
507 g_assert (ACCESS_SPECIAL_STATIC_OFFSET (offset, type) == SPECIAL_STATIC_OFFSET_TYPE_CONTEXT);
509 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
510 int off = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
512 return ((char *) ctx->static_data [idx]) + off;
516 get_current_thread_ptr_for_domain (MonoDomain *domain, MonoInternalThread *thread)
518 static MonoClassField *current_thread_field = NULL;
522 if (!current_thread_field) {
523 current_thread_field = mono_class_get_field_from_name (mono_defaults.thread_class, "current_thread");
524 g_assert (current_thread_field);
527 mono_class_vtable (domain, mono_defaults.thread_class);
528 mono_domain_lock (domain);
529 offset = GPOINTER_TO_UINT (g_hash_table_lookup (domain->special_static_fields, current_thread_field));
530 mono_domain_unlock (domain);
533 return (MonoThread **)get_thread_static_data (thread, offset);
537 set_current_thread_for_domain (MonoDomain *domain, MonoInternalThread *thread, MonoThread *current)
539 MonoThread **current_thread_ptr = get_current_thread_ptr_for_domain (domain, thread);
541 g_assert (current->obj.vtable->domain == domain);
543 g_assert (!*current_thread_ptr);
544 *current_thread_ptr = current;
548 create_thread_object (MonoDomain *domain, MonoInternalThread *internal)
554 vtable = mono_class_vtable (domain, mono_defaults.thread_class);
557 thread = (MonoThread*)mono_object_new_mature (vtable, &error);
558 /* only possible failure mode is OOM, from which we don't expect to recover. */
559 mono_error_assert_ok (&error);
561 MONO_OBJECT_SETREF (thread, internal_thread, internal);
566 static MonoInternalThread*
567 create_internal_thread_object (void)
570 MonoInternalThread *thread;
573 vt = mono_class_vtable (mono_get_root_domain (), mono_defaults.internal_thread_class);
574 thread = (MonoInternalThread*) mono_object_new_mature (vt, &error);
575 /* only possible failure mode is OOM, from which we don't exect to recover */
576 mono_error_assert_ok (&error);
578 thread->synch_cs = g_new0 (MonoCoopMutex, 1);
579 mono_coop_mutex_init_recursive (thread->synch_cs);
581 thread->apartment_state = ThreadApartmentState_Unknown;
582 thread->managed_id = get_next_managed_thread_id ();
583 if (mono_gc_is_moving ()) {
584 thread->thread_pinning_ref = thread;
585 MONO_GC_REGISTER_ROOT_PINNING (thread->thread_pinning_ref, MONO_ROOT_SOURCE_THREADING, "thread pinning reference");
588 thread->priority = MONO_THREAD_PRIORITY_NORMAL;
590 thread->suspended = g_new0 (MonoOSEvent, 1);
591 mono_os_event_init (thread->suspended, TRUE);
597 mono_thread_internal_set_priority (MonoInternalThread *internal, MonoThreadPriority priority)
601 g_assert (priority >= MONO_THREAD_PRIORITY_LOWEST);
602 g_assert (priority <= MONO_THREAD_PRIORITY_HIGHEST);
603 g_assert (MONO_THREAD_PRIORITY_LOWEST < MONO_THREAD_PRIORITY_HIGHEST);
608 g_assert (internal->native_handle);
610 res = SetThreadPriority (internal->native_handle, priority - 2);
612 g_error ("%s: SetThreadPriority failed, error %d", __func__, GetLastError ());
613 #else /* HOST_WIN32 */
616 struct sched_param param;
619 tid = thread_get_tid (internal);
621 res = pthread_getschedparam (tid, &policy, ¶m);
623 g_error ("%s: pthread_getschedparam failed, error: \"%s\" (%d)", __func__, g_strerror (res), res);
625 #ifdef _POSIX_PRIORITY_SCHEDULING
628 /* Necessary to get valid priority range */
630 min = sched_get_priority_min (policy);
631 max = sched_get_priority_max (policy);
633 if (max > 0 && min >= 0 && max > min) {
634 double srange, drange, sposition, dposition;
635 srange = MONO_THREAD_PRIORITY_HIGHEST - MONO_THREAD_PRIORITY_LOWEST;
637 sposition = priority - MONO_THREAD_PRIORITY_LOWEST;
638 dposition = (sposition / srange) * drange;
639 param.sched_priority = (int)(dposition + min);
646 param.sched_priority = 50;
652 param.sched_priority = 0;
655 g_error ("%s: unknown policy %d", __func__, policy);
659 res = pthread_setschedparam (tid, policy, ¶m);
662 g_warning ("%s: pthread_setschedparam failed, error: \"%s\" (%d)", __func__, g_strerror (res), res);
665 g_error ("%s: pthread_setschedparam failed, error: \"%s\" (%d)", __func__, g_strerror (res), res);
667 #endif /* HOST_WIN32 */
671 mono_alloc_static_data (gpointer **static_data_ptr, guint32 offset, gboolean threadlocal);
674 mono_thread_attach_internal (MonoThread *thread, gboolean force_attach, gboolean force_domain, gsize *stack_ptr)
676 MonoThreadInfo *info;
677 MonoInternalThread *internal;
678 MonoDomain *domain, *root_domain;
682 info = mono_thread_info_current ();
684 internal = thread->internal_thread;
685 internal->handle = mono_threads_open_thread_handle (info->handle);
687 internal->native_handle = OpenThread (THREAD_ALL_ACCESS, FALSE, GetCurrentThreadId ());
689 internal->tid = MONO_NATIVE_THREAD_ID_TO_UINT (mono_native_thread_id_get ());
690 internal->thread_info = info;
691 internal->small_id = info->small_id;
692 internal->stack_ptr = stack_ptr;
694 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Setting current_object_key to %p", __func__, mono_native_thread_id_get (), internal));
696 SET_CURRENT_OBJECT (internal);
698 domain = mono_object_domain (thread);
700 mono_thread_push_appdomain_ref (domain);
701 if (!mono_domain_set (domain, force_domain)) {
702 mono_thread_pop_appdomain_ref ();
706 mono_threads_lock ();
708 if (threads_starting_up)
709 mono_g_hash_table_remove (threads_starting_up, thread);
711 if (shutting_down && !force_attach) {
712 mono_threads_unlock ();
717 MONO_GC_REGISTER_ROOT_FIXED (threads, MONO_ROOT_SOURCE_THREADING, "threads table");
718 threads = mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_VALUE_GC, MONO_ROOT_SOURCE_THREADING, "threads table");
721 /* We don't need to duplicate thread->handle, because it is
722 * only closed when the thread object is finalized by the GC. */
723 mono_g_hash_table_insert (threads, (gpointer)(gsize)(internal->tid), internal);
725 /* We have to do this here because mono_thread_start_cb
726 * requires that root_domain_thread is set up. */
727 if (thread_static_info.offset || thread_static_info.idx > 0) {
728 /* get the current allocated size */
729 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (thread_static_info.idx, thread_static_info.offset, 0);
730 mono_alloc_static_data (&internal->static_data, offset, TRUE);
733 mono_threads_unlock ();
735 root_domain = mono_get_root_domain ();
737 g_assert (!internal->root_domain_thread);
738 if (domain != root_domain)
739 MONO_OBJECT_SETREF (internal, root_domain_thread, create_thread_object (root_domain, internal));
741 MONO_OBJECT_SETREF (internal, root_domain_thread, thread);
743 if (domain != root_domain)
744 set_current_thread_for_domain (root_domain, internal, internal->root_domain_thread);
746 set_current_thread_for_domain (domain, internal, thread);
748 THREAD_DEBUG (g_message ("%s: Attached thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, internal->tid, internal->handle));
756 MonoObject *start_delegate;
757 MonoObject *start_delegate_arg;
758 MonoThreadStart start_func;
759 gpointer start_func_arg;
761 MonoCoopSem registered;
764 static guint32 WINAPI start_wrapper_internal(StartInfo *start_info, gsize *stack_ptr)
767 MonoThreadStart start_func;
768 void *start_func_arg;
771 * We don't create a local to hold start_info->thread, so hopefully it won't get pinned during a
775 MonoInternalThread *internal;
776 MonoObject *start_delegate;
777 MonoObject *start_delegate_arg;
780 thread = start_info->thread;
781 internal = thread->internal_thread;
782 domain = mono_object_domain (start_info->thread);
784 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper", __func__, mono_native_thread_id_get ()));
786 if (!mono_thread_attach_internal (thread, FALSE, FALSE, stack_ptr)) {
787 start_info->failed = TRUE;
789 mono_coop_sem_post (&start_info->registered);
791 if (InterlockedDecrement (&start_info->ref) == 0) {
792 mono_coop_sem_destroy (&start_info->registered);
799 mono_thread_internal_set_priority (internal, internal->priority);
803 start_delegate = start_info->start_delegate;
804 start_delegate_arg = start_info->start_delegate_arg;
805 start_func = start_info->start_func;
806 start_func_arg = start_info->start_func_arg;
808 /* This MUST be called before any managed code can be
809 * executed, as it calls the callback function that (for the
810 * jit) sets the lmf marker.
813 if (mono_thread_start_cb)
814 mono_thread_start_cb (tid, stack_ptr, start_func);
816 /* On 2.0 profile (and higher), set explicitly since state might have been
818 if (internal->apartment_state == ThreadApartmentState_Unknown)
819 internal->apartment_state = ThreadApartmentState_MTA;
821 mono_thread_init_apartment_state ();
823 /* Let the thread that called Start() know we're ready */
824 mono_coop_sem_post (&start_info->registered);
826 if (InterlockedDecrement (&start_info->ref) == 0) {
827 mono_coop_sem_destroy (&start_info->registered);
831 /* start_info is not valid anymore */
835 * Call this after calling start_notify, since the profiler callback might want
836 * to lock the thread, and the lock is held by thread_start () which waits for
839 mono_profiler_thread_start (tid);
841 /* if the name was set before starting, we didn't invoke the profiler callback */
842 if (internal->name) {
843 char *tname = g_utf16_to_utf8 (internal->name, internal->name_len, NULL, NULL, NULL);
844 mono_profiler_thread_name (internal->tid, tname);
845 mono_native_thread_set_name (MONO_UINT_TO_NATIVE_THREAD_ID (internal->tid), tname);
849 /* start_func is set only for unmanaged start functions */
851 start_func (start_func_arg);
855 g_assert (start_delegate != NULL);
857 /* we may want to handle the exception here. See comment below on unhandled exceptions */
858 args [0] = (gpointer) start_delegate_arg;
859 mono_runtime_delegate_invoke_checked (start_delegate, args, &error);
861 if (!mono_error_ok (&error)) {
862 MonoException *ex = mono_error_convert_to_exception (&error);
864 g_assert (ex != NULL);
865 MonoClass *klass = mono_object_get_class (&ex->object);
866 if ((mono_runtime_unhandled_exception_policy_get () != MONO_UNHANDLED_POLICY_LEGACY) &&
867 !is_threadabort_exception (klass)) {
868 mono_unhandled_exception (&ex->object);
869 mono_invoke_unhandled_exception_hook (&ex->object);
870 g_assert_not_reached ();
873 mono_error_cleanup (&error);
877 /* If the thread calls ExitThread at all, this remaining code
878 * will not be executed, but the main thread will eventually
879 * call thread_cleanup() on this thread's behalf.
882 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper terminating", __func__, mono_native_thread_id_get ()));
884 /* Do any cleanup needed for apartment state. This
885 * cannot be done in thread_cleanup since thread_cleanup could be
886 * called for a thread other than the current thread.
887 * mono_thread_cleanup_apartment_state cleans up apartment
888 * for the current thead */
889 mono_thread_cleanup_apartment_state ();
891 mono_thread_detach_internal (internal);
898 static gsize WINAPI start_wrapper(void *data)
900 volatile gsize dummy;
902 return start_wrapper_internal ((StartInfo*) data, (gsize*) &dummy);
908 * Common thread creation code.
909 * LOCKING: Acquires the threads lock.
912 create_thread (MonoThread *thread, MonoInternalThread *internal, MonoObject *start_delegate, MonoThreadStart start_func, gpointer start_func_arg,
913 gboolean threadpool_thread, guint32 stack_size, MonoError *error)
915 StartInfo *start_info = NULL;
916 MonoThreadHandle *thread_handle;
917 MonoNativeThreadId tid;
919 gsize stack_set_size;
922 g_assert (!start_func && !start_func_arg);
924 g_assert (!start_delegate);
927 * Join joinable threads to prevent running out of threads since the finalizer
928 * thread might be blocked/backlogged.
930 mono_threads_join_threads ();
932 mono_error_init (error);
934 mono_threads_lock ();
936 mono_threads_unlock ();
939 if (threads_starting_up == NULL) {
940 MONO_GC_REGISTER_ROOT_FIXED (threads_starting_up, MONO_ROOT_SOURCE_THREADING, "starting threads table");
941 threads_starting_up = mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_KEY_VALUE_GC, MONO_ROOT_SOURCE_THREADING, "starting threads table");
943 mono_g_hash_table_insert (threads_starting_up, thread, thread);
944 mono_threads_unlock ();
946 internal->threadpool_thread = threadpool_thread;
947 if (threadpool_thread)
948 mono_thread_set_state (internal, ThreadState_Background);
950 start_info = g_new0 (StartInfo, 1);
952 start_info->thread = thread;
953 start_info->start_delegate = start_delegate;
954 start_info->start_delegate_arg = thread->start_obj;
955 start_info->start_func = start_func;
956 start_info->start_func_arg = start_func_arg;
957 start_info->failed = FALSE;
958 mono_coop_sem_init (&start_info->registered, 0);
961 stack_set_size = default_stacksize_for_thread (internal);
965 thread_handle = mono_threads_create_thread (start_wrapper, start_info, &stack_set_size, &tid);
967 if (thread_handle == NULL) {
968 /* The thread couldn't be created, so set an exception */
969 mono_threads_lock ();
970 mono_g_hash_table_remove (threads_starting_up, thread);
971 mono_threads_unlock ();
972 mono_error_set_execution_engine (error, "Couldn't create thread. Error 0x%x", GetLastError());
973 /* ref is not going to be decremented in start_wrapper_internal */
974 InterlockedDecrement (&start_info->ref);
979 internal->stack_size = (int) stack_set_size;
981 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Launching thread %p (%"G_GSIZE_FORMAT")", __func__, mono_native_thread_id_get (), internal, (gsize)internal->tid));
984 * Wait for the thread to set up its TLS data etc, so
985 * theres no potential race condition if someone tries
986 * to look up the data believing the thread has
990 mono_coop_sem_wait (&start_info->registered, MONO_SEM_FLAGS_NONE);
992 mono_threads_close_thread_handle (thread_handle);
994 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));
996 ret = !start_info->failed;
999 if (InterlockedDecrement (&start_info->ref) == 0) {
1000 mono_coop_sem_destroy (&start_info->registered);
1001 g_free (start_info);
1007 void mono_thread_new_init (intptr_t tid, gpointer stack_start, gpointer func)
1009 if (mono_thread_start_cb) {
1010 mono_thread_start_cb (tid, stack_start, func);
1014 void mono_threads_set_default_stacksize (guint32 stacksize)
1016 default_stacksize = stacksize;
1019 guint32 mono_threads_get_default_stacksize (void)
1021 return default_stacksize;
1025 * mono_thread_create_internal:
1027 * ARG should not be a GC reference.
1030 mono_thread_create_internal (MonoDomain *domain, gpointer func, gpointer arg, gboolean threadpool_thread, guint32 stack_size, MonoError *error)
1033 MonoInternalThread *internal;
1036 mono_error_init (error);
1038 internal = create_internal_thread_object ();
1040 thread = create_thread_object (domain, internal);
1042 LOCK_THREAD (internal);
1044 res = create_thread (thread, internal, NULL, (MonoThreadStart) func, arg, threadpool_thread, stack_size, error);
1045 return_val_if_nok (error, NULL);
1047 UNLOCK_THREAD (internal);
1053 mono_thread_create (MonoDomain *domain, gpointer func, gpointer arg)
1056 if (!mono_thread_create_checked (domain, func, arg, &error))
1057 mono_error_cleanup (&error);
1061 mono_thread_create_checked (MonoDomain *domain, gpointer func, gpointer arg, MonoError *error)
1063 return (NULL != mono_thread_create_internal (domain, func, arg, FALSE, 0, error));
1067 mono_thread_attach (MonoDomain *domain)
1069 MonoThread *thread = mono_thread_attach_full (domain, FALSE);
1075 mono_thread_attach_full (MonoDomain *domain, gboolean force_attach)
1077 MonoInternalThread *internal;
1079 MonoNativeThreadId tid;
1082 if (mono_thread_internal_current_is_attached ()) {
1083 if (domain != mono_domain_get ())
1084 mono_domain_set (domain, TRUE);
1085 /* Already attached */
1086 return mono_thread_current ();
1089 if (!mono_gc_register_thread (&domain)) {
1090 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 ());
1093 tid=mono_native_thread_id_get ();
1095 internal = create_internal_thread_object ();
1097 thread = create_thread_object (domain, internal);
1099 if (!mono_thread_attach_internal (thread, force_attach, TRUE, &stack_ptr)) {
1100 /* Mono is shutting down, so just wait for the end */
1102 mono_thread_info_sleep (10000, NULL);
1105 THREAD_DEBUG (g_message ("%s: Attached thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, internal->handle));
1107 if (mono_thread_attach_cb) {
1111 mono_thread_info_get_stack_bounds (&staddr, &stsize);
1114 mono_thread_attach_cb (MONO_NATIVE_THREAD_ID_TO_UINT (tid), &stack_ptr);
1116 mono_thread_attach_cb (MONO_NATIVE_THREAD_ID_TO_UINT (tid), staddr + stsize);
1119 /* Can happen when we attach the profiler helper thread in order to heapshot. */
1120 if (!mono_thread_info_current ()->tools_thread)
1121 // FIXME: Need a separate callback
1122 mono_profiler_thread_start (MONO_NATIVE_THREAD_ID_TO_UINT (tid));
1128 mono_thread_detach_internal (MonoInternalThread *thread)
1130 g_return_if_fail (thread != NULL);
1132 THREAD_DEBUG (g_message ("%s: mono_thread_detach for %p (%"G_GSIZE_FORMAT")", __func__, thread, (gsize)thread->tid));
1135 mono_w32mutex_abandon ();
1138 thread_cleanup (thread);
1140 SET_CURRENT_OBJECT (NULL);
1141 mono_domain_unset ();
1143 /* Don't need to close the handle to this thread, even though we took a
1144 * reference in mono_thread_attach (), because the GC will do it
1145 * when the Thread object is finalised.
1150 mono_thread_detach (MonoThread *thread)
1153 mono_thread_detach_internal (thread->internal_thread);
1157 * mono_thread_detach_if_exiting:
1159 * Detach the current thread from the runtime if it is exiting, i.e. it is running pthread dtors.
1160 * This should be used at the end of embedding code which calls into managed code, and which
1161 * can be called from pthread dtors, like dealloc: implementations in objective-c.
1164 mono_thread_detach_if_exiting (void)
1166 if (mono_thread_info_is_exiting ()) {
1167 MonoInternalThread *thread;
1169 thread = mono_thread_internal_current ();
1171 mono_thread_detach_internal (thread);
1172 mono_thread_info_detach ();
1180 mono_thread_internal_current_is_attached (void)
1182 MonoInternalThread *internal;
1184 internal = GET_CURRENT_OBJECT ();
1192 mono_thread_exit (void)
1194 MonoInternalThread *thread = mono_thread_internal_current ();
1196 THREAD_DEBUG (g_message ("%s: mono_thread_exit for %p (%"G_GSIZE_FORMAT")", __func__, thread, (gsize)thread->tid));
1198 mono_thread_detach_internal (thread);
1200 /* we could add a callback here for embedders to use. */
1201 if (mono_thread_get_main () && (thread == mono_thread_get_main ()->internal_thread))
1202 exit (mono_environment_exitcode_get ());
1204 mono_thread_info_exit (0);
1208 ves_icall_System_Threading_Thread_ConstructInternalThread (MonoThread *this_obj)
1210 MonoInternalThread *internal;
1212 internal = create_internal_thread_object ();
1214 internal->state = ThreadState_Unstarted;
1216 InterlockedCompareExchangePointer ((volatile gpointer *)&this_obj->internal_thread, internal, NULL);
1220 ves_icall_System_Threading_Thread_Thread_internal (MonoThread *this_obj,
1224 MonoInternalThread *internal;
1227 THREAD_DEBUG (g_message("%s: Trying to start a new thread: this (%p) start (%p)", __func__, this_obj, start));
1229 if (!this_obj->internal_thread)
1230 ves_icall_System_Threading_Thread_ConstructInternalThread (this_obj);
1231 internal = this_obj->internal_thread;
1233 LOCK_THREAD (internal);
1235 if ((internal->state & ThreadState_Unstarted) == 0) {
1236 UNLOCK_THREAD (internal);
1237 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has already been started."));
1241 if ((internal->state & ThreadState_Aborted) != 0) {
1242 UNLOCK_THREAD (internal);
1246 res = create_thread (this_obj, internal, start, NULL, NULL, FALSE, 0, &error);
1248 mono_error_cleanup (&error);
1249 UNLOCK_THREAD (internal);
1253 internal->state &= ~ThreadState_Unstarted;
1255 THREAD_DEBUG (g_message ("%s: Started thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread));
1257 UNLOCK_THREAD (internal);
1258 return internal->handle;
1262 * This is called from the finalizer of the internal thread object.
1265 ves_icall_System_Threading_InternalThread_Thread_free_internal (MonoInternalThread *this_obj)
1267 THREAD_DEBUG (g_message ("%s: Closing thread %p, handle %p", __func__, this, this_obj->handle));
1270 * Since threads keep a reference to their thread object while running, by the time this function is called,
1271 * the thread has already exited/detached, i.e. thread_cleanup () has ran. The exception is during shutdown,
1272 * when thread_cleanup () can be called after this.
1274 if (this_obj->handle) {
1275 mono_threads_close_thread_handle (this_obj->handle);
1276 this_obj->handle = NULL;
1280 CloseHandle (this_obj->native_handle);
1283 if (this_obj->synch_cs) {
1284 MonoCoopMutex *synch_cs = this_obj->synch_cs;
1285 this_obj->synch_cs = NULL;
1286 mono_coop_mutex_destroy (synch_cs);
1290 if (this_obj->name) {
1291 void *name = this_obj->name;
1292 this_obj->name = NULL;
1298 ves_icall_System_Threading_Thread_Sleep_internal(gint32 ms)
1301 MonoInternalThread *thread = mono_thread_internal_current ();
1303 THREAD_DEBUG (g_message ("%s: Sleeping for %d ms", __func__, ms));
1305 if (mono_thread_current_check_pending_interrupt ())
1309 gboolean alerted = FALSE;
1311 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1313 res = mono_thread_info_sleep (ms, &alerted);
1315 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1318 MonoException* exc = mono_thread_execute_interruption ();
1320 mono_raise_exception (exc);
1332 void ves_icall_System_Threading_Thread_SpinWait_nop (void)
1337 ves_icall_System_Threading_Thread_GetDomainID (void)
1339 return mono_domain_get()->domain_id;
1343 ves_icall_System_Threading_Thread_Yield (void)
1345 return mono_thread_info_yield ();
1349 * mono_thread_get_name:
1351 * Return the name of the thread. NAME_LEN is set to the length of the name.
1352 * Return NULL if the thread has no name. The returned memory is owned by the
1356 mono_thread_get_name (MonoInternalThread *this_obj, guint32 *name_len)
1360 LOCK_THREAD (this_obj);
1362 if (!this_obj->name) {
1366 *name_len = this_obj->name_len;
1367 res = g_new (gunichar2, this_obj->name_len);
1368 memcpy (res, this_obj->name, sizeof (gunichar2) * this_obj->name_len);
1371 UNLOCK_THREAD (this_obj);
1377 * mono_thread_get_name_utf8:
1379 * Return the name of the thread in UTF-8.
1380 * Return NULL if the thread has no name.
1381 * The returned memory is owned by the caller.
1384 mono_thread_get_name_utf8 (MonoThread *thread)
1389 MonoInternalThread *internal = thread->internal_thread;
1390 if (internal == NULL)
1393 LOCK_THREAD (internal);
1395 char *tname = g_utf16_to_utf8 (internal->name, internal->name_len, NULL, NULL, NULL);
1397 UNLOCK_THREAD (internal);
1403 * mono_thread_get_managed_id:
1405 * Return the Thread.ManagedThreadId value of `thread`.
1406 * Returns -1 if `thread` is NULL.
1409 mono_thread_get_managed_id (MonoThread *thread)
1414 MonoInternalThread *internal = thread->internal_thread;
1415 if (internal == NULL)
1418 int32_t id = internal->managed_id;
1424 ves_icall_System_Threading_Thread_GetName_internal (MonoInternalThread *this_obj)
1429 mono_error_init (&error);
1431 LOCK_THREAD (this_obj);
1433 if (!this_obj->name)
1436 str = mono_string_new_utf16_checked (mono_domain_get (), this_obj->name, this_obj->name_len, &error);
1438 UNLOCK_THREAD (this_obj);
1440 if (mono_error_set_pending_exception (&error))
1447 mono_thread_set_name_internal (MonoInternalThread *this_obj, MonoString *name, gboolean permanent, MonoError *error)
1449 LOCK_THREAD (this_obj);
1451 mono_error_init (error);
1453 if ((this_obj->flags & MONO_THREAD_FLAG_NAME_SET)) {
1454 UNLOCK_THREAD (this_obj);
1456 mono_error_set_invalid_operation (error, "Thread.Name can only be set once.");
1459 if (this_obj->name) {
1460 g_free (this_obj->name);
1461 this_obj->name_len = 0;
1464 this_obj->name = g_new (gunichar2, mono_string_length (name));
1465 memcpy (this_obj->name, mono_string_chars (name), mono_string_length (name) * 2);
1466 this_obj->name_len = mono_string_length (name);
1469 this_obj->flags |= MONO_THREAD_FLAG_NAME_SET;
1472 this_obj->name = NULL;
1475 UNLOCK_THREAD (this_obj);
1477 if (this_obj->name && this_obj->tid) {
1478 char *tname = mono_string_to_utf8_checked (name, error);
1479 return_if_nok (error);
1480 mono_profiler_thread_name (this_obj->tid, tname);
1481 mono_native_thread_set_name (thread_get_tid (this_obj), tname);
1487 ves_icall_System_Threading_Thread_SetName_internal (MonoInternalThread *this_obj, MonoString *name)
1490 mono_thread_set_name_internal (this_obj, name, TRUE, &error);
1491 mono_error_set_pending_exception (&error);
1495 * ves_icall_System_Threading_Thread_GetPriority_internal:
1496 * @param this_obj: The MonoInternalThread on which to operate.
1498 * Gets the priority of the given thread.
1499 * @return: The priority of the given thread.
1502 ves_icall_System_Threading_Thread_GetPriority (MonoThread *this_obj)
1505 MonoInternalThread *internal = this_obj->internal_thread;
1507 LOCK_THREAD (internal);
1508 priority = internal->priority;
1509 UNLOCK_THREAD (internal);
1515 * ves_icall_System_Threading_Thread_SetPriority_internal:
1516 * @param this_obj: The MonoInternalThread on which to operate.
1517 * @param priority: The priority to set.
1519 * Sets the priority of the given thread.
1522 ves_icall_System_Threading_Thread_SetPriority (MonoThread *this_obj, int priority)
1524 MonoInternalThread *internal = this_obj->internal_thread;
1526 LOCK_THREAD (internal);
1527 internal->priority = priority;
1528 if (internal->thread_info != NULL)
1529 mono_thread_internal_set_priority (internal, priority);
1530 UNLOCK_THREAD (internal);
1533 /* If the array is already in the requested domain, we just return it,
1534 otherwise we return a copy in that domain. */
1536 byte_array_to_domain (MonoArray *arr, MonoDomain *domain, MonoError *error)
1540 mono_error_init (error);
1544 if (mono_object_domain (arr) == domain)
1547 copy = mono_array_new_checked (domain, mono_defaults.byte_class, arr->max_length, error);
1548 memmove (mono_array_addr (copy, guint8, 0), mono_array_addr (arr, guint8, 0), arr->max_length);
1553 ves_icall_System_Threading_Thread_ByteArrayToRootDomain (MonoArray *arr)
1556 MonoArray *result = byte_array_to_domain (arr, mono_get_root_domain (), &error);
1557 mono_error_set_pending_exception (&error);
1562 ves_icall_System_Threading_Thread_ByteArrayToCurrentDomain (MonoArray *arr)
1565 MonoArray *result = byte_array_to_domain (arr, mono_domain_get (), &error);
1566 mono_error_set_pending_exception (&error);
1571 mono_thread_current (void)
1573 MonoDomain *domain = mono_domain_get ();
1574 MonoInternalThread *internal = mono_thread_internal_current ();
1575 MonoThread **current_thread_ptr;
1577 g_assert (internal);
1578 current_thread_ptr = get_current_thread_ptr_for_domain (domain, internal);
1580 if (!*current_thread_ptr) {
1581 g_assert (domain != mono_get_root_domain ());
1582 *current_thread_ptr = create_thread_object (domain, internal);
1584 return *current_thread_ptr;
1587 /* Return the thread object belonging to INTERNAL in the current domain */
1589 mono_thread_current_for_thread (MonoInternalThread *internal)
1591 MonoDomain *domain = mono_domain_get ();
1592 MonoThread **current_thread_ptr;
1594 g_assert (internal);
1595 current_thread_ptr = get_current_thread_ptr_for_domain (domain, internal);
1597 if (!*current_thread_ptr) {
1598 g_assert (domain != mono_get_root_domain ());
1599 *current_thread_ptr = create_thread_object (domain, internal);
1601 return *current_thread_ptr;
1605 mono_thread_internal_current (void)
1607 MonoInternalThread *res = GET_CURRENT_OBJECT ();
1608 THREAD_DEBUG (g_message ("%s: returning %p", __func__, res));
1613 ves_icall_System_Threading_Thread_Join_internal(MonoThread *this_obj, int ms)
1615 MonoInternalThread *thread = this_obj->internal_thread;
1616 MonoThreadHandle *handle = thread->handle;
1617 MonoInternalThread *cur_thread = mono_thread_internal_current ();
1620 if (mono_thread_current_check_pending_interrupt ())
1623 LOCK_THREAD (thread);
1625 if ((thread->state & ThreadState_Unstarted) != 0) {
1626 UNLOCK_THREAD (thread);
1628 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started."));
1632 UNLOCK_THREAD (thread);
1637 THREAD_DEBUG (g_message ("%s: joining thread handle %p, %d ms", __func__, handle, ms));
1639 mono_thread_set_state (cur_thread, ThreadState_WaitSleepJoin);
1642 ret=mono_thread_info_wait_one_handle (handle, ms, TRUE);
1645 mono_thread_clr_state (cur_thread, ThreadState_WaitSleepJoin);
1647 if(ret==MONO_THREAD_INFO_WAIT_RET_SUCCESS_0) {
1648 THREAD_DEBUG (g_message ("%s: join successful", __func__));
1653 THREAD_DEBUG (g_message ("%s: join failed", __func__));
1658 #define MANAGED_WAIT_FAILED 0x7fffffff
1661 map_native_wait_result_to_managed (gint32 val)
1663 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1664 return val == WAIT_FAILED ? MANAGED_WAIT_FAILED : val;
1668 mono_wait_uninterrupted (MonoInternalThread *thread, guint32 numhandles, gpointer *handles, gboolean waitall, gint32 ms, MonoError *error)
1676 mono_error_init (error);
1678 start = (ms == -1) ? 0 : mono_100ns_ticks ();
1681 if (numhandles != 1)
1682 ret = WaitForMultipleObjectsEx (numhandles, handles, waitall, wait, TRUE);
1684 ret = WaitForSingleObjectEx (handles [0], ms, TRUE);
1687 if (ret != WAIT_IO_COMPLETION)
1690 exc = mono_thread_execute_interruption ();
1692 mono_error_set_exception_instance (error, exc);
1699 /* Re-calculate ms according to the time passed */
1700 diff_ms = (gint32)((mono_100ns_ticks () - start) / 10000);
1701 if (diff_ms >= ms) {
1705 wait = ms - diff_ms;
1711 gint32 ves_icall_System_Threading_WaitHandle_WaitAll_internal(MonoArray *mono_handles, gint32 ms)
1718 MonoObject *waitHandle;
1719 MonoInternalThread *thread = mono_thread_internal_current ();
1721 /* Do this WaitSleepJoin check before creating objects */
1722 if (mono_thread_current_check_pending_interrupt ())
1723 return map_native_wait_result_to_managed (WAIT_FAILED);
1725 /* We fail in managed if the array has more than 64 elements */
1726 numhandles = (guint32)mono_array_length(mono_handles);
1727 handles = g_new0(HANDLE, numhandles);
1729 for(i = 0; i < numhandles; i++) {
1730 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
1731 handles [i] = mono_wait_handle_get_handle ((MonoWaitHandle *) waitHandle);
1738 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1740 ret = mono_wait_uninterrupted (thread, numhandles, handles, TRUE, ms, &error);
1742 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1746 mono_error_set_pending_exception (&error);
1748 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1749 return map_native_wait_result_to_managed (ret);
1752 gint32 ves_icall_System_Threading_WaitHandle_WaitAny_internal(MonoArray *mono_handles, gint32 ms)
1755 HANDLE handles [MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
1756 uintptr_t numhandles;
1759 MonoObject *waitHandle;
1760 MonoInternalThread *thread = mono_thread_internal_current ();
1762 /* Do this WaitSleepJoin check before creating objects */
1763 if (mono_thread_current_check_pending_interrupt ())
1764 return map_native_wait_result_to_managed (WAIT_FAILED);
1766 numhandles = mono_array_length(mono_handles);
1767 if (numhandles > MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS)
1768 return map_native_wait_result_to_managed (WAIT_FAILED);
1770 for(i = 0; i < numhandles; i++) {
1771 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
1772 handles [i] = mono_wait_handle_get_handle ((MonoWaitHandle *) waitHandle);
1779 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1781 ret = mono_wait_uninterrupted (thread, numhandles, handles, FALSE, ms, &error);
1783 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1785 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") returning %d", __func__, mono_native_thread_id_get (), ret));
1787 mono_error_set_pending_exception (&error);
1789 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1790 return map_native_wait_result_to_managed (ret);
1793 gint32 ves_icall_System_Threading_WaitHandle_WaitOne_internal(HANDLE handle, gint32 ms)
1797 MonoInternalThread *thread = mono_thread_internal_current ();
1799 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") waiting for %p, %d ms", __func__, mono_native_thread_id_get (), handle, ms));
1805 if (mono_thread_current_check_pending_interrupt ())
1806 return map_native_wait_result_to_managed (WAIT_FAILED);
1808 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1810 ret = mono_wait_uninterrupted (thread, 1, &handle, FALSE, ms, &error);
1812 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1814 mono_error_set_pending_exception (&error);
1815 return map_native_wait_result_to_managed (ret);
1819 ves_icall_System_Threading_WaitHandle_SignalAndWait_Internal (HANDLE toSignal, HANDLE toWait, gint32 ms)
1822 MonoInternalThread *thread = mono_thread_internal_current ();
1827 if (mono_thread_current_check_pending_interrupt ())
1828 return map_native_wait_result_to_managed (WAIT_FAILED);
1830 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1833 ret = SignalObjectAndWait (toSignal, toWait, ms, TRUE);
1836 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1838 return map_native_wait_result_to_managed (ret);
1841 gint32 ves_icall_System_Threading_Interlocked_Increment_Int (gint32 *location)
1843 return InterlockedIncrement (location);
1846 gint64 ves_icall_System_Threading_Interlocked_Increment_Long (gint64 *location)
1848 #if SIZEOF_VOID_P == 4
1849 if (G_UNLIKELY ((size_t)location & 0x7)) {
1851 mono_interlocked_lock ();
1854 mono_interlocked_unlock ();
1858 return InterlockedIncrement64 (location);
1861 gint32 ves_icall_System_Threading_Interlocked_Decrement_Int (gint32 *location)
1863 return InterlockedDecrement(location);
1866 gint64 ves_icall_System_Threading_Interlocked_Decrement_Long (gint64 * location)
1868 #if SIZEOF_VOID_P == 4
1869 if (G_UNLIKELY ((size_t)location & 0x7)) {
1871 mono_interlocked_lock ();
1874 mono_interlocked_unlock ();
1878 return InterlockedDecrement64 (location);
1881 gint32 ves_icall_System_Threading_Interlocked_Exchange_Int (gint32 *location, gint32 value)
1883 return InterlockedExchange(location, value);
1886 MonoObject * ves_icall_System_Threading_Interlocked_Exchange_Object (MonoObject **location, MonoObject *value)
1889 res = (MonoObject *) InterlockedExchangePointer((gpointer *) location, value);
1890 mono_gc_wbarrier_generic_nostore (location);
1894 gpointer ves_icall_System_Threading_Interlocked_Exchange_IntPtr (gpointer *location, gpointer value)
1896 return InterlockedExchangePointer(location, value);
1899 gfloat ves_icall_System_Threading_Interlocked_Exchange_Single (gfloat *location, gfloat value)
1901 IntFloatUnion val, ret;
1904 ret.ival = InterlockedExchange((gint32 *) location, val.ival);
1910 ves_icall_System_Threading_Interlocked_Exchange_Long (gint64 *location, gint64 value)
1912 #if SIZEOF_VOID_P == 4
1913 if (G_UNLIKELY ((size_t)location & 0x7)) {
1915 mono_interlocked_lock ();
1918 mono_interlocked_unlock ();
1922 return InterlockedExchange64 (location, value);
1926 ves_icall_System_Threading_Interlocked_Exchange_Double (gdouble *location, gdouble value)
1928 LongDoubleUnion val, ret;
1931 ret.ival = (gint64)InterlockedExchange64((gint64 *) location, val.ival);
1936 gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int(gint32 *location, gint32 value, gint32 comparand)
1938 return InterlockedCompareExchange(location, value, comparand);
1941 gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int_Success(gint32 *location, gint32 value, gint32 comparand, MonoBoolean *success)
1943 gint32 r = InterlockedCompareExchange(location, value, comparand);
1944 *success = r == comparand;
1948 MonoObject * ves_icall_System_Threading_Interlocked_CompareExchange_Object (MonoObject **location, MonoObject *value, MonoObject *comparand)
1951 res = (MonoObject *) InterlockedCompareExchangePointer((gpointer *) location, value, comparand);
1952 mono_gc_wbarrier_generic_nostore (location);
1956 gpointer ves_icall_System_Threading_Interlocked_CompareExchange_IntPtr(gpointer *location, gpointer value, gpointer comparand)
1958 return InterlockedCompareExchangePointer(location, value, comparand);
1961 gfloat ves_icall_System_Threading_Interlocked_CompareExchange_Single (gfloat *location, gfloat value, gfloat comparand)
1963 IntFloatUnion val, ret, cmp;
1966 cmp.fval = comparand;
1967 ret.ival = InterlockedCompareExchange((gint32 *) location, val.ival, cmp.ival);
1973 ves_icall_System_Threading_Interlocked_CompareExchange_Double (gdouble *location, gdouble value, gdouble comparand)
1975 #if SIZEOF_VOID_P == 8
1976 LongDoubleUnion val, comp, ret;
1979 comp.fval = comparand;
1980 ret.ival = (gint64)InterlockedCompareExchangePointer((gpointer *) location, (gpointer)val.ival, (gpointer)comp.ival);
1986 mono_interlocked_lock ();
1988 if (old == comparand)
1990 mono_interlocked_unlock ();
1997 ves_icall_System_Threading_Interlocked_CompareExchange_Long (gint64 *location, gint64 value, gint64 comparand)
1999 #if SIZEOF_VOID_P == 4
2000 if (G_UNLIKELY ((size_t)location & 0x7)) {
2002 mono_interlocked_lock ();
2004 if (old == comparand)
2006 mono_interlocked_unlock ();
2010 return InterlockedCompareExchange64 (location, value, comparand);
2014 ves_icall_System_Threading_Interlocked_CompareExchange_T (MonoObject **location, MonoObject *value, MonoObject *comparand)
2017 res = (MonoObject *)InterlockedCompareExchangePointer ((volatile gpointer *)location, value, comparand);
2018 mono_gc_wbarrier_generic_nostore (location);
2023 ves_icall_System_Threading_Interlocked_Exchange_T (MonoObject **location, MonoObject *value)
2026 MONO_CHECK_NULL (location, NULL);
2027 res = (MonoObject *)InterlockedExchangePointer ((volatile gpointer *)location, value);
2028 mono_gc_wbarrier_generic_nostore (location);
2033 ves_icall_System_Threading_Interlocked_Add_Int (gint32 *location, gint32 value)
2035 return InterlockedAdd (location, value);
2039 ves_icall_System_Threading_Interlocked_Add_Long (gint64 *location, gint64 value)
2041 #if SIZEOF_VOID_P == 4
2042 if (G_UNLIKELY ((size_t)location & 0x7)) {
2044 mono_interlocked_lock ();
2047 mono_interlocked_unlock ();
2051 return InterlockedAdd64 (location, value);
2055 ves_icall_System_Threading_Interlocked_Read_Long (gint64 *location)
2057 #if SIZEOF_VOID_P == 4
2058 if (G_UNLIKELY ((size_t)location & 0x7)) {
2060 mono_interlocked_lock ();
2062 mono_interlocked_unlock ();
2066 return InterlockedRead64 (location);
2070 ves_icall_System_Threading_Thread_MemoryBarrier (void)
2072 mono_memory_barrier ();
2076 ves_icall_System_Threading_Thread_ClrState (MonoInternalThread* this_obj, guint32 state)
2078 mono_thread_clr_state (this_obj, (MonoThreadState)state);
2080 if (state & ThreadState_Background) {
2081 /* If the thread changes the background mode, the main thread has to
2082 * be notified, since it has to rebuild the list of threads to
2085 mono_os_event_set (&background_change_event);
2090 ves_icall_System_Threading_Thread_SetState (MonoInternalThread* this_obj, guint32 state)
2092 mono_thread_set_state (this_obj, (MonoThreadState)state);
2094 if (state & ThreadState_Background) {
2095 /* If the thread changes the background mode, the main thread has to
2096 * be notified, since it has to rebuild the list of threads to
2099 mono_os_event_set (&background_change_event);
2104 ves_icall_System_Threading_Thread_GetState (MonoInternalThread* this_obj)
2108 LOCK_THREAD (this_obj);
2110 state = this_obj->state;
2112 UNLOCK_THREAD (this_obj);
2117 void ves_icall_System_Threading_Thread_Interrupt_internal (MonoThread *this_obj)
2119 MonoInternalThread *current;
2121 MonoInternalThread *thread = this_obj->internal_thread;
2123 LOCK_THREAD (thread);
2125 current = mono_thread_internal_current ();
2127 thread->thread_interrupt_requested = TRUE;
2128 throw_ = current != thread && (thread->state & ThreadState_WaitSleepJoin);
2130 UNLOCK_THREAD (thread);
2133 async_abort_internal (thread, FALSE);
2138 * mono_thread_current_check_pending_interrupt:
2140 * Checks if there's a interruption request and set the pending exception if so.
2142 * @returns true if a pending exception was set
2145 mono_thread_current_check_pending_interrupt (void)
2147 MonoInternalThread *thread = mono_thread_internal_current ();
2148 gboolean throw_ = FALSE;
2150 LOCK_THREAD (thread);
2152 if (thread->thread_interrupt_requested) {
2154 thread->thread_interrupt_requested = FALSE;
2157 UNLOCK_THREAD (thread);
2160 mono_set_pending_exception (mono_get_exception_thread_interrupted ());
2165 request_thread_abort (MonoInternalThread *thread, MonoObject *state)
2167 LOCK_THREAD (thread);
2169 if ((thread->state & ThreadState_AbortRequested) != 0 ||
2170 (thread->state & ThreadState_StopRequested) != 0 ||
2171 (thread->state & ThreadState_Stopped) != 0)
2173 UNLOCK_THREAD (thread);
2177 if ((thread->state & ThreadState_Unstarted) != 0) {
2178 thread->state |= ThreadState_Aborted;
2179 UNLOCK_THREAD (thread);
2183 thread->state |= ThreadState_AbortRequested;
2184 if (thread->abort_state_handle)
2185 mono_gchandle_free (thread->abort_state_handle);
2187 thread->abort_state_handle = mono_gchandle_new (state, FALSE);
2188 g_assert (thread->abort_state_handle);
2190 thread->abort_state_handle = 0;
2192 thread->abort_exc = NULL;
2194 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));
2196 /* During shutdown, we can't wait for other threads */
2198 /* Make sure the thread is awake */
2199 mono_thread_resume (thread);
2201 UNLOCK_THREAD (thread);
2206 ves_icall_System_Threading_Thread_Abort (MonoInternalThread *thread, MonoObject *state)
2208 if (!request_thread_abort (thread, state))
2211 if (thread == mono_thread_internal_current ()) {
2213 self_abort_internal (&error);
2214 mono_error_set_pending_exception (&error);
2216 async_abort_internal (thread, TRUE);
2221 * mono_thread_internal_abort:
2223 * Request thread @thread to be aborted.
2225 * @thread MUST NOT be the current thread.
2228 mono_thread_internal_abort (MonoInternalThread *thread)
2230 g_assert (thread != mono_thread_internal_current ());
2232 if (!request_thread_abort (thread, NULL))
2234 async_abort_internal (thread, TRUE);
2238 ves_icall_System_Threading_Thread_ResetAbort (MonoThread *this_obj)
2240 MonoInternalThread *thread = mono_thread_internal_current ();
2241 gboolean was_aborting;
2243 LOCK_THREAD (thread);
2244 was_aborting = thread->state & ThreadState_AbortRequested;
2245 thread->state &= ~ThreadState_AbortRequested;
2246 UNLOCK_THREAD (thread);
2248 if (!was_aborting) {
2249 const char *msg = "Unable to reset abort because no abort was requested";
2250 mono_set_pending_exception (mono_get_exception_thread_state (msg));
2253 thread->abort_exc = NULL;
2254 if (thread->abort_state_handle) {
2255 mono_gchandle_free (thread->abort_state_handle);
2256 /* This is actually not necessary - the handle
2257 only counts if the exception is set */
2258 thread->abort_state_handle = 0;
2263 mono_thread_internal_reset_abort (MonoInternalThread *thread)
2265 LOCK_THREAD (thread);
2267 thread->state &= ~ThreadState_AbortRequested;
2269 if (thread->abort_exc) {
2270 thread->abort_exc = NULL;
2271 if (thread->abort_state_handle) {
2272 mono_gchandle_free (thread->abort_state_handle);
2273 /* This is actually not necessary - the handle
2274 only counts if the exception is set */
2275 thread->abort_state_handle = 0;
2279 UNLOCK_THREAD (thread);
2283 ves_icall_System_Threading_Thread_GetAbortExceptionState (MonoThread *this_obj)
2286 MonoInternalThread *thread = this_obj->internal_thread;
2287 MonoObject *state, *deserialized = NULL;
2290 if (!thread->abort_state_handle)
2293 state = mono_gchandle_get_target (thread->abort_state_handle);
2296 domain = mono_domain_get ();
2297 if (mono_object_domain (state) == domain)
2300 deserialized = mono_object_xdomain_representation (state, domain, &error);
2302 if (!deserialized) {
2303 MonoException *invalid_op_exc = mono_get_exception_invalid_operation ("Thread.ExceptionState cannot access an ExceptionState from a different AppDomain");
2304 if (!is_ok (&error)) {
2305 MonoObject *exc = (MonoObject*)mono_error_convert_to_exception (&error);
2306 MONO_OBJECT_SETREF (invalid_op_exc, inner_ex, exc);
2308 mono_set_pending_exception (invalid_op_exc);
2312 return deserialized;
2316 mono_thread_suspend (MonoInternalThread *thread)
2318 LOCK_THREAD (thread);
2320 if ((thread->state & ThreadState_Unstarted) != 0 ||
2321 (thread->state & ThreadState_Aborted) != 0 ||
2322 (thread->state & ThreadState_Stopped) != 0)
2324 UNLOCK_THREAD (thread);
2328 if ((thread->state & ThreadState_Suspended) != 0 ||
2329 (thread->state & ThreadState_SuspendRequested) != 0 ||
2330 (thread->state & ThreadState_StopRequested) != 0)
2332 UNLOCK_THREAD (thread);
2336 thread->state |= ThreadState_SuspendRequested;
2337 mono_os_event_reset (thread->suspended);
2339 if (thread == mono_thread_internal_current ()) {
2340 /* calls UNLOCK_THREAD (thread) */
2341 self_suspend_internal ();
2343 /* calls UNLOCK_THREAD (thread) */
2344 async_suspend_internal (thread, FALSE);
2351 ves_icall_System_Threading_Thread_Suspend (MonoThread *this_obj)
2353 if (!mono_thread_suspend (this_obj->internal_thread)) {
2354 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2359 /* LOCKING: LOCK_THREAD(thread) must be held */
2361 mono_thread_resume (MonoInternalThread *thread)
2363 if ((thread->state & ThreadState_SuspendRequested) != 0) {
2364 // MOSTLY_ASYNC_SAFE_PRINTF ("RESUME (1) thread %p\n", thread_get_tid (thread));
2365 thread->state &= ~ThreadState_SuspendRequested;
2366 mono_os_event_set (thread->suspended);
2370 if ((thread->state & ThreadState_Suspended) == 0 ||
2371 (thread->state & ThreadState_Unstarted) != 0 ||
2372 (thread->state & ThreadState_Aborted) != 0 ||
2373 (thread->state & ThreadState_Stopped) != 0)
2375 // MOSTLY_ASYNC_SAFE_PRINTF ("RESUME (2) thread %p\n", thread_get_tid (thread));
2379 // MOSTLY_ASYNC_SAFE_PRINTF ("RESUME (3) thread %p\n", thread_get_tid (thread));
2381 mono_os_event_set (thread->suspended);
2383 if (!thread->self_suspended) {
2384 UNLOCK_THREAD (thread);
2386 /* Awake the thread */
2387 if (!mono_thread_info_resume (thread_get_tid (thread)))
2390 LOCK_THREAD (thread);
2393 thread->state &= ~ThreadState_Suspended;
2399 ves_icall_System_Threading_Thread_Resume (MonoThread *thread)
2401 if (!thread->internal_thread) {
2402 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2404 LOCK_THREAD (thread->internal_thread);
2405 if (!mono_thread_resume (thread->internal_thread))
2406 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2407 UNLOCK_THREAD (thread->internal_thread);
2412 mono_threads_is_critical_method (MonoMethod *method)
2414 switch (method->wrapper_type) {
2415 case MONO_WRAPPER_RUNTIME_INVOKE:
2416 case MONO_WRAPPER_XDOMAIN_INVOKE:
2417 case MONO_WRAPPER_XDOMAIN_DISPATCH:
2424 find_wrapper (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
2429 if (mono_threads_is_critical_method (m)) {
2430 *((gboolean*)data) = TRUE;
2437 is_running_protected_wrapper (void)
2439 gboolean found = FALSE;
2440 mono_stack_walk (find_wrapper, &found);
2445 request_thread_stop (MonoInternalThread *thread)
2447 LOCK_THREAD (thread);
2449 if ((thread->state & ThreadState_StopRequested) != 0 ||
2450 (thread->state & ThreadState_Stopped) != 0)
2452 UNLOCK_THREAD (thread);
2456 /* Make sure the thread is awake */
2457 mono_thread_resume (thread);
2459 thread->state |= ThreadState_StopRequested;
2460 thread->state &= ~ThreadState_AbortRequested;
2462 UNLOCK_THREAD (thread);
2467 * mono_thread_internal_stop:
2469 * Request thread @thread to stop.
2471 * @thread MUST NOT be the current thread.
2474 mono_thread_internal_stop (MonoInternalThread *thread)
2476 g_assert (thread != mono_thread_internal_current ());
2478 if (!request_thread_stop (thread))
2481 async_abort_internal (thread, TRUE);
2484 void mono_thread_stop (MonoThread *thread)
2486 MonoInternalThread *internal = thread->internal_thread;
2488 if (!request_thread_stop (internal))
2491 if (internal == mono_thread_internal_current ()) {
2493 self_abort_internal (&error);
2495 This function is part of the embeding API and has no way to return the exception
2496 to be thrown. So what we do is keep the old behavior and raise the exception.
2498 mono_error_raise_exception (&error); /* OK to throw, see note */
2500 async_abort_internal (internal, TRUE);
2505 ves_icall_System_Threading_Thread_VolatileRead1 (void *ptr)
2507 gint8 tmp = *(volatile gint8 *)ptr;
2508 mono_memory_barrier ();
2513 ves_icall_System_Threading_Thread_VolatileRead2 (void *ptr)
2515 gint16 tmp = *(volatile gint16 *)ptr;
2516 mono_memory_barrier ();
2521 ves_icall_System_Threading_Thread_VolatileRead4 (void *ptr)
2523 gint32 tmp = *(volatile gint32 *)ptr;
2524 mono_memory_barrier ();
2529 ves_icall_System_Threading_Thread_VolatileRead8 (void *ptr)
2531 gint64 tmp = *(volatile gint64 *)ptr;
2532 mono_memory_barrier ();
2537 ves_icall_System_Threading_Thread_VolatileReadIntPtr (void *ptr)
2539 volatile void *tmp = *(volatile void **)ptr;
2540 mono_memory_barrier ();
2541 return (void *) tmp;
2545 ves_icall_System_Threading_Thread_VolatileReadObject (void *ptr)
2547 volatile MonoObject *tmp = *(volatile MonoObject **)ptr;
2548 mono_memory_barrier ();
2549 return (MonoObject *) tmp;
2553 ves_icall_System_Threading_Thread_VolatileReadDouble (void *ptr)
2555 double tmp = *(volatile double *)ptr;
2556 mono_memory_barrier ();
2561 ves_icall_System_Threading_Thread_VolatileReadFloat (void *ptr)
2563 float tmp = *(volatile float *)ptr;
2564 mono_memory_barrier ();
2569 ves_icall_System_Threading_Volatile_Read1 (void *ptr)
2571 return InterlockedRead8 ((volatile gint8 *)ptr);
2575 ves_icall_System_Threading_Volatile_Read2 (void *ptr)
2577 return InterlockedRead16 ((volatile gint16 *)ptr);
2581 ves_icall_System_Threading_Volatile_Read4 (void *ptr)
2583 return InterlockedRead ((volatile gint32 *)ptr);
2587 ves_icall_System_Threading_Volatile_Read8 (void *ptr)
2589 #if SIZEOF_VOID_P == 4
2590 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2592 mono_interlocked_lock ();
2593 val = *(gint64*)ptr;
2594 mono_interlocked_unlock ();
2598 return InterlockedRead64 ((volatile gint64 *)ptr);
2602 ves_icall_System_Threading_Volatile_ReadIntPtr (void *ptr)
2604 return InterlockedReadPointer ((volatile gpointer *)ptr);
2608 ves_icall_System_Threading_Volatile_ReadDouble (void *ptr)
2612 #if SIZEOF_VOID_P == 4
2613 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2615 mono_interlocked_lock ();
2616 val = *(double*)ptr;
2617 mono_interlocked_unlock ();
2622 u.ival = InterlockedRead64 ((volatile gint64 *)ptr);
2628 ves_icall_System_Threading_Volatile_ReadFloat (void *ptr)
2632 u.ival = InterlockedRead ((volatile gint32 *)ptr);
2638 ves_icall_System_Threading_Volatile_Read_T (void *ptr)
2640 return (MonoObject *)InterlockedReadPointer ((volatile gpointer *)ptr);
2644 ves_icall_System_Threading_Thread_VolatileWrite1 (void *ptr, gint8 value)
2646 mono_memory_barrier ();
2647 *(volatile gint8 *)ptr = value;
2651 ves_icall_System_Threading_Thread_VolatileWrite2 (void *ptr, gint16 value)
2653 mono_memory_barrier ();
2654 *(volatile gint16 *)ptr = value;
2658 ves_icall_System_Threading_Thread_VolatileWrite4 (void *ptr, gint32 value)
2660 mono_memory_barrier ();
2661 *(volatile gint32 *)ptr = value;
2665 ves_icall_System_Threading_Thread_VolatileWrite8 (void *ptr, gint64 value)
2667 mono_memory_barrier ();
2668 *(volatile gint64 *)ptr = value;
2672 ves_icall_System_Threading_Thread_VolatileWriteIntPtr (void *ptr, void *value)
2674 mono_memory_barrier ();
2675 *(volatile void **)ptr = value;
2679 ves_icall_System_Threading_Thread_VolatileWriteObject (void *ptr, MonoObject *value)
2681 mono_memory_barrier ();
2682 mono_gc_wbarrier_generic_store (ptr, value);
2686 ves_icall_System_Threading_Thread_VolatileWriteDouble (void *ptr, double value)
2688 mono_memory_barrier ();
2689 *(volatile double *)ptr = value;
2693 ves_icall_System_Threading_Thread_VolatileWriteFloat (void *ptr, float value)
2695 mono_memory_barrier ();
2696 *(volatile float *)ptr = value;
2700 ves_icall_System_Threading_Volatile_Write1 (void *ptr, gint8 value)
2702 InterlockedWrite8 ((volatile gint8 *)ptr, value);
2706 ves_icall_System_Threading_Volatile_Write2 (void *ptr, gint16 value)
2708 InterlockedWrite16 ((volatile gint16 *)ptr, value);
2712 ves_icall_System_Threading_Volatile_Write4 (void *ptr, gint32 value)
2714 InterlockedWrite ((volatile gint32 *)ptr, value);
2718 ves_icall_System_Threading_Volatile_Write8 (void *ptr, gint64 value)
2720 #if SIZEOF_VOID_P == 4
2721 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2722 mono_interlocked_lock ();
2723 *(gint64*)ptr = value;
2724 mono_interlocked_unlock ();
2729 InterlockedWrite64 ((volatile gint64 *)ptr, value);
2733 ves_icall_System_Threading_Volatile_WriteIntPtr (void *ptr, void *value)
2735 InterlockedWritePointer ((volatile gpointer *)ptr, value);
2739 ves_icall_System_Threading_Volatile_WriteDouble (void *ptr, double value)
2743 #if SIZEOF_VOID_P == 4
2744 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2745 mono_interlocked_lock ();
2746 *(double*)ptr = value;
2747 mono_interlocked_unlock ();
2754 InterlockedWrite64 ((volatile gint64 *)ptr, u.ival);
2758 ves_icall_System_Threading_Volatile_WriteFloat (void *ptr, float value)
2764 InterlockedWrite ((volatile gint32 *)ptr, u.ival);
2768 ves_icall_System_Threading_Volatile_Write_T (void *ptr, MonoObject *value)
2770 mono_gc_wbarrier_generic_store_atomic (ptr, value);
2774 free_context (void *user_data)
2776 ContextStaticData *data = user_data;
2778 mono_threads_lock ();
2781 * There is no guarantee that, by the point this reference queue callback
2782 * has been invoked, the GC handle associated with the object will fail to
2783 * resolve as one might expect. So if we don't free and remove the GC
2784 * handle here, free_context_static_data_helper () could end up resolving
2785 * a GC handle to an actually-dead context which would contain a pointer
2786 * to an already-freed static data segment, resulting in a crash when
2789 g_hash_table_remove (contexts, GUINT_TO_POINTER (data->gc_handle));
2791 mono_threads_unlock ();
2793 mono_gchandle_free (data->gc_handle);
2794 mono_free_static_data (data->static_data);
2799 ves_icall_System_Runtime_Remoting_Contexts_Context_RegisterContext (MonoAppContext *ctx)
2801 mono_threads_lock ();
2803 //g_print ("Registering context %d in domain %d\n", ctx->context_id, ctx->domain_id);
2806 contexts = g_hash_table_new (NULL, NULL);
2809 context_queue = mono_gc_reference_queue_new (free_context);
2811 gpointer gch = GUINT_TO_POINTER (mono_gchandle_new_weakref (&ctx->obj, FALSE));
2812 g_hash_table_insert (contexts, gch, gch);
2815 * We use this intermediate structure to contain a duplicate pointer to
2816 * the static data because we can't rely on being able to resolve the GC
2817 * handle in the reference queue callback.
2819 ContextStaticData *data = g_new0 (ContextStaticData, 1);
2820 data->gc_handle = GPOINTER_TO_UINT (gch);
2823 context_adjust_static_data (ctx);
2824 mono_gc_reference_queue_add (context_queue, &ctx->obj, data);
2826 mono_threads_unlock ();
2828 mono_profiler_context_loaded (ctx);
2832 ves_icall_System_Runtime_Remoting_Contexts_Context_ReleaseContext (MonoAppContext *ctx)
2835 * NOTE: Since finalizers are unreliable for the purposes of ensuring
2836 * cleanup in exceptional circumstances, we don't actually do any
2837 * cleanup work here. We instead do this via a reference queue.
2840 //g_print ("Releasing context %d in domain %d\n", ctx->context_id, ctx->domain_id);
2842 mono_profiler_context_unloaded (ctx);
2846 mono_thread_init_tls (void)
2848 MONO_FAST_TLS_INIT (tls_current_object);
2849 mono_native_tls_alloc (¤t_object_key, NULL);
2852 void mono_thread_init (MonoThreadStartCB start_cb,
2853 MonoThreadAttachCB attach_cb)
2855 mono_coop_mutex_init_recursive (&threads_mutex);
2857 mono_os_mutex_init_recursive(&interlocked_mutex);
2858 mono_os_mutex_init_recursive(&joinable_threads_mutex);
2860 mono_os_event_init (&background_change_event, FALSE);
2862 mono_init_static_data_info (&thread_static_info);
2863 mono_init_static_data_info (&context_static_info);
2865 THREAD_DEBUG (g_message ("%s: Allocated current_object_key %d", __func__, current_object_key));
2867 mono_thread_start_cb = start_cb;
2868 mono_thread_attach_cb = attach_cb;
2871 void mono_thread_cleanup (void)
2873 #if !defined(RUN_IN_SUBTHREAD) && !defined(HOST_WIN32)
2874 /* The main thread must abandon any held mutexes (particularly
2875 * important for named mutexes as they are shared across
2876 * processes, see bug 74680.) This will happen when the
2877 * thread exits, but if it's not running in a subthread it
2878 * won't exit in time.
2880 mono_w32mutex_abandon ();
2884 /* This stuff needs more testing, it seems one of these
2885 * critical sections can be locked when mono_thread_cleanup is
2888 mono_coop_mutex_destroy (&threads_mutex);
2889 mono_os_mutex_destroy (&interlocked_mutex);
2890 mono_os_mutex_destroy (&delayed_free_table_mutex);
2891 mono_os_mutex_destroy (&small_id_mutex);
2892 mono_os_event_destroy (&background_change_event);
2895 mono_native_tls_free (current_object_key);
2899 mono_threads_install_cleanup (MonoThreadCleanupFunc func)
2901 mono_thread_cleanup_fn = func;
2905 mono_thread_set_manage_callback (MonoThread *thread, MonoThreadManageCallback func)
2907 thread->internal_thread->manage_callback = func;
2911 static void print_tids (gpointer key, gpointer value, gpointer user)
2913 /* GPOINTER_TO_UINT breaks horribly if sizeof(void *) >
2914 * sizeof(uint) and a cast to uint would overflow
2916 /* Older versions of glib don't have G_GSIZE_FORMAT, so just
2917 * print this as a pointer.
2919 g_message ("Waiting for: %p", key);
2924 MonoThreadHandle *handles[MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
2925 MonoInternalThread *threads[MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
2930 wait_for_tids (struct wait_data *wait, guint32 timeout, gboolean check_state_change)
2933 MonoThreadInfoWaitRet ret;
2935 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
2937 /* Add the thread state change event, so it wakes
2938 * up if a thread changes to background mode. */
2941 if (check_state_change)
2942 ret = mono_thread_info_wait_multiple_handle (wait->handles, wait->num, &background_change_event, FALSE, timeout, TRUE);
2944 ret = mono_thread_info_wait_multiple_handle (wait->handles, wait->num, NULL, TRUE, timeout, TRUE);
2947 if (ret == MONO_THREAD_INFO_WAIT_RET_FAILED) {
2948 /* See the comment in build_wait_tids() */
2949 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
2953 for( i = 0; i < wait->num; i++)
2954 mono_threads_close_thread_handle (wait->handles [i]);
2956 if (ret == MONO_THREAD_INFO_WAIT_RET_TIMEOUT)
2959 if (ret < wait->num) {
2960 MonoInternalThread *internal;
2962 internal = wait->threads [ret];
2964 mono_threads_lock ();
2965 if (mono_g_hash_table_lookup (threads, (gpointer) internal->tid) == internal)
2966 g_error ("%s: failed to call mono_thread_detach_internal on thread %p, InternalThread: %p", __func__, internal->tid, internal);
2967 mono_threads_unlock ();
2971 static void build_wait_tids (gpointer key, gpointer value, gpointer user)
2973 struct wait_data *wait=(struct wait_data *)user;
2975 if(wait->num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS - 1) {
2976 MonoInternalThread *thread=(MonoInternalThread *)value;
2978 /* Ignore background threads, we abort them later */
2979 /* Do not lock here since it is not needed and the caller holds threads_lock */
2980 if (thread->state & ThreadState_Background) {
2981 THREAD_DEBUG (g_message ("%s: ignoring background thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
2982 return; /* just leave, ignore */
2985 if (mono_gc_is_finalizer_internal_thread (thread)) {
2986 THREAD_DEBUG (g_message ("%s: ignoring finalizer thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
2990 if (thread == mono_thread_internal_current ()) {
2991 THREAD_DEBUG (g_message ("%s: ignoring current thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
2995 if (mono_thread_get_main () && (thread == mono_thread_get_main ()->internal_thread)) {
2996 THREAD_DEBUG (g_message ("%s: ignoring main thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3000 if (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE) {
3001 THREAD_DEBUG (g_message ("%s: ignoring thread %" G_GSIZE_FORMAT "with DONT_MANAGE flag set.", __func__, (gsize)thread->tid));
3005 THREAD_DEBUG (g_message ("%s: Invoking mono_thread_manage callback on thread %p", __func__, thread));
3006 if ((thread->manage_callback == NULL) || (thread->manage_callback (thread->root_domain_thread) == TRUE)) {
3007 wait->handles[wait->num]=mono_threads_open_thread_handle (thread->handle);
3008 wait->threads[wait->num]=thread;
3011 THREAD_DEBUG (g_message ("%s: adding thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3013 THREAD_DEBUG (g_message ("%s: ignoring (because of callback) thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3018 /* Just ignore the rest, we can't do anything with
3025 remove_and_abort_threads (gpointer key, gpointer value, gpointer user)
3027 struct wait_data *wait=(struct wait_data *)user;
3028 MonoNativeThreadId self = mono_native_thread_id_get ();
3029 MonoInternalThread *thread = (MonoInternalThread *)value;
3031 if (wait->num >= MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS)
3034 /* The finalizer thread is not a background thread */
3035 if (!mono_native_thread_id_equals (thread_get_tid (thread), self)
3036 && (thread->state & ThreadState_Background) != 0
3037 && (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE) == 0
3039 wait->handles[wait->num] = mono_threads_open_thread_handle (thread->handle);
3040 wait->threads[wait->num] = thread;
3043 THREAD_DEBUG (g_print ("%s: Aborting id: %"G_GSIZE_FORMAT"\n", __func__, (gsize)thread->tid));
3044 mono_thread_internal_abort (thread);
3048 return !mono_native_thread_id_equals (thread_get_tid (thread), self)
3049 && !mono_gc_is_finalizer_internal_thread (thread);
3053 * mono_threads_set_shutting_down:
3055 * Is called by a thread that wants to shut down Mono. If the runtime is already
3056 * shutting down, the calling thread is suspended/stopped, and this function never
3060 mono_threads_set_shutting_down (void)
3062 MonoInternalThread *current_thread = mono_thread_internal_current ();
3064 mono_threads_lock ();
3066 if (shutting_down) {
3067 mono_threads_unlock ();
3069 /* Make sure we're properly suspended/stopped */
3071 LOCK_THREAD (current_thread);
3073 if ((current_thread->state & ThreadState_SuspendRequested) ||
3074 (current_thread->state & ThreadState_AbortRequested) ||
3075 (current_thread->state & ThreadState_StopRequested)) {
3076 UNLOCK_THREAD (current_thread);
3077 mono_thread_execute_interruption ();
3079 current_thread->state |= ThreadState_Stopped;
3080 UNLOCK_THREAD (current_thread);
3083 /*since we're killing the thread, detach it.*/
3084 mono_thread_detach_internal (current_thread);
3086 /* Wake up other threads potentially waiting for us */
3087 mono_thread_info_exit (0);
3089 shutting_down = TRUE;
3091 /* Not really a background state change, but this will
3092 * interrupt the main thread if it is waiting for all
3093 * the other threads.
3095 mono_os_event_set (&background_change_event);
3097 mono_threads_unlock ();
3101 void mono_thread_manage (void)
3103 struct wait_data wait_data;
3104 struct wait_data *wait = &wait_data;
3106 memset (wait, 0, sizeof (struct wait_data));
3107 /* join each thread that's still running */
3108 THREAD_DEBUG (g_message ("%s: Joining each running thread...", __func__));
3110 mono_threads_lock ();
3112 THREAD_DEBUG (g_message("%s: No threads", __func__));
3113 mono_threads_unlock ();
3116 mono_threads_unlock ();
3119 mono_threads_lock ();
3120 if (shutting_down) {
3121 /* somebody else is shutting down */
3122 mono_threads_unlock ();
3125 THREAD_DEBUG (g_message ("%s: There are %d threads to join", __func__, mono_g_hash_table_size (threads));
3126 mono_g_hash_table_foreach (threads, print_tids, NULL));
3128 mono_os_event_reset (&background_change_event);
3130 /* We must zero all InternalThread pointers to avoid making the GC unhappy. */
3131 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3132 mono_g_hash_table_foreach (threads, build_wait_tids, wait);
3133 mono_threads_unlock ();
3135 /* Something to wait for */
3136 wait_for_tids (wait, INFINITE, TRUE);
3137 THREAD_DEBUG (g_message ("%s: I have %d threads after waiting.", __func__, wait->num));
3138 } while(wait->num>0);
3140 /* Mono is shutting down, so just wait for the end */
3141 if (!mono_runtime_try_shutdown ()) {
3142 /*FIXME mono_thread_suspend probably should call mono_thread_execute_interruption when self interrupting. */
3143 mono_thread_suspend (mono_thread_internal_current ());
3144 mono_thread_execute_interruption ();
3148 * Remove everything but the finalizer thread and self.
3149 * Also abort all the background threads
3152 mono_threads_lock ();
3155 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3156 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3157 mono_g_hash_table_foreach_remove (threads, remove_and_abort_threads, wait);
3159 mono_threads_unlock ();
3161 THREAD_DEBUG (g_message ("%s: wait->num is now %d", __func__, wait->num));
3162 if (wait->num > 0) {
3163 /* Something to wait for */
3164 wait_for_tids (wait, INFINITE, FALSE);
3166 } while (wait->num > 0);
3169 * give the subthreads a chance to really quit (this is mainly needed
3170 * to get correct user and system times from getrusage/wait/time(1)).
3171 * This could be removed if we avoid pthread_detach() and use pthread_join().
3173 mono_thread_info_yield ();
3177 collect_threads_for_suspend (gpointer key, gpointer value, gpointer user_data)
3179 MonoInternalThread *thread = (MonoInternalThread*)value;
3180 struct wait_data *wait = (struct wait_data*)user_data;
3183 * We try to exclude threads early, to avoid running into the MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS
3185 * This needs no locking.
3187 if ((thread->state & ThreadState_Suspended) != 0 ||
3188 (thread->state & ThreadState_Stopped) != 0)
3191 if (wait->num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS) {
3192 wait->handles [wait->num] = mono_threads_open_thread_handle (thread->handle);
3193 wait->threads [wait->num] = thread;
3199 * mono_thread_suspend_all_other_threads:
3201 * Suspend all managed threads except the finalizer thread and this thread. It is
3202 * not possible to resume them later.
3204 void mono_thread_suspend_all_other_threads (void)
3206 struct wait_data wait_data;
3207 struct wait_data *wait = &wait_data;
3209 MonoNativeThreadId self = mono_native_thread_id_get ();
3210 guint32 eventidx = 0;
3211 gboolean starting, finished;
3213 memset (wait, 0, sizeof (struct wait_data));
3215 * The other threads could be in an arbitrary state at this point, i.e.
3216 * they could be starting up, shutting down etc. This means that there could be
3217 * threads which are not even in the threads hash table yet.
3221 * First we set a barrier which will be checked by all threads before they
3222 * are added to the threads hash table, and they will exit if the flag is set.
3223 * This ensures that no threads could be added to the hash later.
3224 * We will use shutting_down as the barrier for now.
3226 g_assert (shutting_down);
3229 * We make multiple calls to WaitForMultipleObjects since:
3230 * - we can only wait for MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS threads
3231 * - some threads could exit without becoming suspended
3236 * Make a copy of the hashtable since we can't do anything with
3237 * threads while threads_mutex is held.
3240 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3241 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3242 mono_threads_lock ();
3243 mono_g_hash_table_foreach (threads, collect_threads_for_suspend, wait);
3244 mono_threads_unlock ();
3247 /* Get the suspended events that we'll be waiting for */
3248 for (i = 0; i < wait->num; ++i) {
3249 MonoInternalThread *thread = wait->threads [i];
3251 if (mono_native_thread_id_equals (thread_get_tid (thread), self)
3252 || mono_gc_is_finalizer_internal_thread (thread)
3253 || (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE)
3255 mono_threads_close_thread_handle (wait->handles [i]);
3256 wait->threads [i] = NULL;
3260 LOCK_THREAD (thread);
3262 if ((thread->state & ThreadState_Suspended) != 0 ||
3263 (thread->state & ThreadState_StopRequested) != 0 ||
3264 (thread->state & ThreadState_Stopped) != 0) {
3265 UNLOCK_THREAD (thread);
3266 mono_threads_close_thread_handle (wait->handles [i]);
3267 wait->threads [i] = NULL;
3273 /* Convert abort requests into suspend requests */
3274 if ((thread->state & ThreadState_AbortRequested) != 0)
3275 thread->state &= ~ThreadState_AbortRequested;
3277 thread->state |= ThreadState_SuspendRequested;
3278 mono_os_event_reset (thread->suspended);
3280 /* Signal the thread to suspend + calls UNLOCK_THREAD (thread) */
3281 async_suspend_internal (thread, TRUE);
3283 mono_threads_close_thread_handle (wait->handles [i]);
3284 wait->threads [i] = NULL;
3286 if (eventidx <= 0) {
3288 * If there are threads which are starting up, we wait until they
3289 * are suspended when they try to register in the threads hash.
3290 * This is guaranteed to finish, since the threads which can create new
3291 * threads get suspended after a while.
3292 * FIXME: The finalizer thread can still create new threads.
3294 mono_threads_lock ();
3295 if (threads_starting_up)
3296 starting = mono_g_hash_table_size (threads_starting_up) > 0;
3299 mono_threads_unlock ();
3301 mono_thread_info_sleep (100, NULL);
3309 MonoInternalThread *thread;
3310 MonoStackFrameInfo *frames;
3311 int nframes, max_frames;
3312 int nthreads, max_threads;
3313 MonoInternalThread **threads;
3314 } ThreadDumpUserData;
3316 static gboolean thread_dump_requested;
3318 /* This needs to be async safe */
3320 collect_frame (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
3322 ThreadDumpUserData *ud = (ThreadDumpUserData *)data;
3324 if (ud->nframes < ud->max_frames) {
3325 memcpy (&ud->frames [ud->nframes], frame, sizeof (MonoStackFrameInfo));
3332 /* This needs to be async safe */
3333 static SuspendThreadResult
3334 get_thread_dump (MonoThreadInfo *info, gpointer ud)
3336 ThreadDumpUserData *user_data = (ThreadDumpUserData *)ud;
3337 MonoInternalThread *thread = user_data->thread;
3340 /* This no longer works with remote unwinding */
3341 g_string_append_printf (text, " tid=0x%p this=0x%p ", (gpointer)(gsize)thread->tid, thread);
3342 mono_thread_internal_describe (thread, text);
3343 g_string_append (text, "\n");
3346 if (thread == mono_thread_internal_current ())
3347 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (collect_frame, NULL, MONO_UNWIND_SIGNAL_SAFE, ud);
3349 mono_get_eh_callbacks ()->mono_walk_stack_with_state (collect_frame, mono_thread_info_get_suspend_state (info), MONO_UNWIND_SIGNAL_SAFE, ud);
3351 return MonoResumeThread;
3355 int nthreads, max_threads;
3356 MonoInternalThread **threads;
3357 } CollectThreadsUserData;
3360 collect_thread (gpointer key, gpointer value, gpointer user)
3362 CollectThreadsUserData *ud = (CollectThreadsUserData *)user;
3363 MonoInternalThread *thread = (MonoInternalThread *)value;
3365 if (ud->nthreads < ud->max_threads)
3366 ud->threads [ud->nthreads ++] = thread;
3370 * Collect running threads into the THREADS array.
3371 * THREADS should be an array allocated on the stack.
3374 collect_threads (MonoInternalThread **thread_array, int max_threads)
3376 CollectThreadsUserData ud;
3378 memset (&ud, 0, sizeof (ud));
3379 /* This array contains refs, but its on the stack, so its ok */
3380 ud.threads = thread_array;
3381 ud.max_threads = max_threads;
3383 mono_threads_lock ();
3384 mono_g_hash_table_foreach (threads, collect_thread, &ud);
3385 mono_threads_unlock ();
3391 dump_thread (MonoInternalThread *thread, ThreadDumpUserData *ud)
3393 GString* text = g_string_new (0);
3395 GError *error = NULL;
3398 ud->thread = thread;
3401 /* Collect frames for the thread */
3402 if (thread == mono_thread_internal_current ()) {
3403 get_thread_dump (mono_thread_info_current (), ud);
3405 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), FALSE, get_thread_dump, ud);
3409 * Do all the non async-safe work outside of get_thread_dump.
3412 name = g_utf16_to_utf8 (thread->name, thread->name_len, NULL, NULL, &error);
3414 g_string_append_printf (text, "\n\"%s\"", name);
3417 else if (thread->threadpool_thread) {
3418 g_string_append (text, "\n\"<threadpool thread>\"");
3420 g_string_append (text, "\n\"<unnamed thread>\"");
3423 for (i = 0; i < ud->nframes; ++i) {
3424 MonoStackFrameInfo *frame = &ud->frames [i];
3425 MonoMethod *method = NULL;
3427 if (frame->type == FRAME_TYPE_MANAGED)
3428 method = mono_jit_info_get_method (frame->ji);
3431 gchar *location = mono_debug_print_stack_frame (method, frame->native_offset, frame->domain);
3432 g_string_append_printf (text, " %s\n", location);
3435 g_string_append_printf (text, " at <unknown> <0x%05x>\n", frame->native_offset);
3439 fprintf (stdout, "%s", text->str);
3441 #if PLATFORM_WIN32 && TARGET_WIN32 && _DEBUG
3442 OutputDebugStringA(text->str);
3445 g_string_free (text, TRUE);
3450 mono_threads_perform_thread_dump (void)
3452 ThreadDumpUserData ud;
3453 MonoInternalThread *thread_array [128];
3454 int tindex, nthreads;
3456 if (!thread_dump_requested)
3459 printf ("Full thread dump:\n");
3461 /* Make a copy of the threads hash to avoid doing work inside threads_lock () */
3462 nthreads = collect_threads (thread_array, 128);
3464 memset (&ud, 0, sizeof (ud));
3465 ud.frames = g_new0 (MonoStackFrameInfo, 256);
3466 ud.max_frames = 256;
3468 for (tindex = 0; tindex < nthreads; ++tindex)
3469 dump_thread (thread_array [tindex], &ud);
3473 thread_dump_requested = FALSE;
3476 /* Obtain the thread dump of all threads */
3478 mono_threads_get_thread_dump (MonoArray **out_threads, MonoArray **out_stack_frames, MonoError *error)
3481 ThreadDumpUserData ud;
3482 MonoInternalThread *thread_array [128];
3483 MonoDomain *domain = mono_domain_get ();
3484 MonoDebugSourceLocation *location;
3485 int tindex, nthreads;
3487 mono_error_init (error);
3489 *out_threads = NULL;
3490 *out_stack_frames = NULL;
3492 /* Make a copy of the threads hash to avoid doing work inside threads_lock () */
3493 nthreads = collect_threads (thread_array, 128);
3495 memset (&ud, 0, sizeof (ud));
3496 ud.frames = g_new0 (MonoStackFrameInfo, 256);
3497 ud.max_frames = 256;
3499 *out_threads = mono_array_new_checked (domain, mono_defaults.thread_class, nthreads, error);
3502 *out_stack_frames = mono_array_new_checked (domain, mono_defaults.array_class, nthreads, error);
3506 for (tindex = 0; tindex < nthreads; ++tindex) {
3507 MonoInternalThread *thread = thread_array [tindex];
3508 MonoArray *thread_frames;
3514 /* Collect frames for the thread */
3515 if (thread == mono_thread_internal_current ()) {
3516 get_thread_dump (mono_thread_info_current (), &ud);
3518 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), FALSE, get_thread_dump, &ud);
3521 mono_array_setref_fast (*out_threads, tindex, mono_thread_current_for_thread (thread));
3523 thread_frames = mono_array_new_checked (domain, mono_defaults.stack_frame_class, ud.nframes, error);
3526 mono_array_setref_fast (*out_stack_frames, tindex, thread_frames);
3528 for (i = 0; i < ud.nframes; ++i) {
3529 MonoStackFrameInfo *frame = &ud.frames [i];
3530 MonoMethod *method = NULL;
3531 MonoStackFrame *sf = (MonoStackFrame *)mono_object_new_checked (domain, mono_defaults.stack_frame_class, error);
3535 sf->native_offset = frame->native_offset;
3537 if (frame->type == FRAME_TYPE_MANAGED)
3538 method = mono_jit_info_get_method (frame->ji);
3541 sf->method_address = (gsize) frame->ji->code_start;
3543 MonoReflectionMethod *rm = mono_method_get_object_checked (domain, method, NULL, error);
3546 MONO_OBJECT_SETREF (sf, method, rm);
3548 location = mono_debug_lookup_source_location (method, frame->native_offset, domain);
3550 sf->il_offset = location->il_offset;
3552 if (location && location->source_file) {
3553 MONO_OBJECT_SETREF (sf, filename, mono_string_new (domain, location->source_file));
3554 sf->line = location->row;
3555 sf->column = location->column;
3557 mono_debug_free_source_location (location);
3562 mono_array_setref (thread_frames, i, sf);
3568 return is_ok (error);
3572 * mono_threads_request_thread_dump:
3574 * Ask all threads except the current to print their stacktrace to stdout.
3577 mono_threads_request_thread_dump (void)
3579 /*The new thread dump code runs out of the finalizer thread. */
3580 thread_dump_requested = TRUE;
3581 mono_gc_finalize_notify ();
3586 gint allocated; /* +1 so that refs [allocated] == NULL */
3590 typedef struct ref_stack RefStack;
3593 ref_stack_new (gint initial_size)
3597 initial_size = MAX (initial_size, 16) + 1;
3598 rs = g_new0 (RefStack, 1);
3599 rs->refs = g_new0 (gpointer, initial_size);
3600 rs->allocated = initial_size;
3605 ref_stack_destroy (gpointer ptr)
3607 RefStack *rs = (RefStack *)ptr;
3616 ref_stack_push (RefStack *rs, gpointer ptr)
3618 g_assert (rs != NULL);
3620 if (rs->bottom >= rs->allocated) {
3621 rs->refs = (void **)g_realloc (rs->refs, rs->allocated * 2 * sizeof (gpointer) + 1);
3622 rs->allocated <<= 1;
3623 rs->refs [rs->allocated] = NULL;
3625 rs->refs [rs->bottom++] = ptr;
3629 ref_stack_pop (RefStack *rs)
3631 if (rs == NULL || rs->bottom == 0)
3635 rs->refs [rs->bottom] = NULL;
3639 ref_stack_find (RefStack *rs, gpointer ptr)
3646 for (refs = rs->refs; refs && *refs; refs++) {
3654 * mono_thread_push_appdomain_ref:
3656 * Register that the current thread may have references to objects in domain
3657 * @domain on its stack. Each call to this function should be paired with a
3658 * call to pop_appdomain_ref.
3661 mono_thread_push_appdomain_ref (MonoDomain *domain)
3663 MonoInternalThread *thread = mono_thread_internal_current ();
3666 /* printf ("PUSH REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, domain->friendly_name); */
3667 SPIN_LOCK (thread->lock_thread_id);
3668 if (thread->appdomain_refs == NULL)
3669 thread->appdomain_refs = ref_stack_new (16);
3670 ref_stack_push ((RefStack *)thread->appdomain_refs, domain);
3671 SPIN_UNLOCK (thread->lock_thread_id);
3676 mono_thread_pop_appdomain_ref (void)
3678 MonoInternalThread *thread = mono_thread_internal_current ();
3681 /* printf ("POP REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, ((MonoDomain*)(thread->appdomain_refs->data))->friendly_name); */
3682 SPIN_LOCK (thread->lock_thread_id);
3683 ref_stack_pop ((RefStack *)thread->appdomain_refs);
3684 SPIN_UNLOCK (thread->lock_thread_id);
3689 mono_thread_internal_has_appdomain_ref (MonoInternalThread *thread, MonoDomain *domain)
3692 SPIN_LOCK (thread->lock_thread_id);
3693 res = ref_stack_find ((RefStack *)thread->appdomain_refs, domain);
3694 SPIN_UNLOCK (thread->lock_thread_id);
3699 mono_thread_has_appdomain_ref (MonoThread *thread, MonoDomain *domain)
3701 return mono_thread_internal_has_appdomain_ref (thread->internal_thread, domain);
3704 typedef struct abort_appdomain_data {
3705 struct wait_data wait;
3707 } abort_appdomain_data;
3710 collect_appdomain_thread (gpointer key, gpointer value, gpointer user_data)
3712 MonoInternalThread *thread = (MonoInternalThread*)value;
3713 abort_appdomain_data *data = (abort_appdomain_data*)user_data;
3714 MonoDomain *domain = data->domain;
3716 if (mono_thread_internal_has_appdomain_ref (thread, domain)) {
3717 /* printf ("ABORTING THREAD %p BECAUSE IT REFERENCES DOMAIN %s.\n", thread->tid, domain->friendly_name); */
3719 if(data->wait.num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS) {
3720 data->wait.handles [data->wait.num] = mono_threads_open_thread_handle (thread->handle);
3721 data->wait.threads [data->wait.num] = thread;
3724 /* Just ignore the rest, we can't do anything with
3732 * mono_threads_abort_appdomain_threads:
3734 * Abort threads which has references to the given appdomain.
3737 mono_threads_abort_appdomain_threads (MonoDomain *domain, int timeout)
3739 #ifdef __native_client__
3743 abort_appdomain_data user_data;
3745 int orig_timeout = timeout;
3748 THREAD_DEBUG (g_message ("%s: starting abort", __func__));
3750 start_time = mono_msec_ticks ();
3752 mono_threads_lock ();
3754 user_data.domain = domain;
3755 user_data.wait.num = 0;
3756 /* This shouldn't take any locks */
3757 mono_g_hash_table_foreach (threads, collect_appdomain_thread, &user_data);
3758 mono_threads_unlock ();
3760 if (user_data.wait.num > 0) {
3761 /* Abort the threads outside the threads lock */
3762 for (i = 0; i < user_data.wait.num; ++i)
3763 mono_thread_internal_abort (user_data.wait.threads [i]);
3766 * We should wait for the threads either to abort, or to leave the
3767 * domain. We can't do the latter, so we wait with a timeout.
3769 wait_for_tids (&user_data.wait, 100, FALSE);
3772 /* Update remaining time */
3773 timeout -= mono_msec_ticks () - start_time;
3774 start_time = mono_msec_ticks ();
3776 if (orig_timeout != -1 && timeout < 0)
3779 while (user_data.wait.num > 0);
3781 THREAD_DEBUG (g_message ("%s: abort done", __func__));
3787 clear_cached_culture (gpointer key, gpointer value, gpointer user_data)
3789 MonoInternalThread *thread = (MonoInternalThread*)value;
3790 MonoDomain *domain = (MonoDomain*)user_data;
3793 /* No locking needed here */
3794 /* FIXME: why no locking? writes to the cache are protected with synch_cs above */
3796 if (thread->cached_culture_info) {
3797 for (i = 0; i < NUM_CACHED_CULTURES * 2; ++i) {
3798 MonoObject *obj = mono_array_get (thread->cached_culture_info, MonoObject*, i);
3799 if (obj && obj->vtable->domain == domain)
3800 mono_array_set (thread->cached_culture_info, MonoObject*, i, NULL);
3806 * mono_threads_clear_cached_culture:
3808 * Clear the cached_current_culture from all threads if it is in the
3812 mono_threads_clear_cached_culture (MonoDomain *domain)
3814 mono_threads_lock ();
3815 mono_g_hash_table_foreach (threads, clear_cached_culture, domain);
3816 mono_threads_unlock ();
3820 * mono_thread_get_undeniable_exception:
3822 * Return an exception which needs to be raised when leaving a catch clause.
3823 * This is used for undeniable exception propagation.
3826 mono_thread_get_undeniable_exception (void)
3828 MonoInternalThread *thread = mono_thread_internal_current ();
3830 if (thread && thread->abort_exc && !is_running_protected_wrapper ()) {
3832 * FIXME: Clear the abort exception and return an AppDomainUnloaded
3833 * exception if the thread no longer references a dying appdomain.
3835 thread->abort_exc->trace_ips = NULL;
3836 thread->abort_exc->stack_trace = NULL;
3837 return thread->abort_exc;
3843 #if MONO_SMALL_CONFIG
3844 #define NUM_STATIC_DATA_IDX 4
3845 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
3849 #define NUM_STATIC_DATA_IDX 8
3850 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
3851 1024, 4096, 16384, 65536, 262144, 1048576, 4194304, 16777216
3855 static MonoBitSet *thread_reference_bitmaps [NUM_STATIC_DATA_IDX];
3856 static MonoBitSet *context_reference_bitmaps [NUM_STATIC_DATA_IDX];
3859 mark_slots (void *addr, MonoBitSet **bitmaps, MonoGCMarkFunc mark_func, void *gc_data)
3861 gpointer *static_data = (gpointer *)addr;
3863 for (int i = 0; i < NUM_STATIC_DATA_IDX; ++i) {
3864 void **ptr = (void **)static_data [i];
3869 MONO_BITSET_FOREACH (bitmaps [i], idx, {
3870 void **p = ptr + idx;
3873 mark_func ((MonoObject**)p, gc_data);
3879 mark_tls_slots (void *addr, MonoGCMarkFunc mark_func, void *gc_data)
3881 mark_slots (addr, thread_reference_bitmaps, mark_func, gc_data);
3885 mark_ctx_slots (void *addr, MonoGCMarkFunc mark_func, void *gc_data)
3887 mark_slots (addr, context_reference_bitmaps, mark_func, gc_data);
3891 * mono_alloc_static_data
3893 * Allocate memory blocks for storing threads or context static data
3896 mono_alloc_static_data (gpointer **static_data_ptr, guint32 offset, gboolean threadlocal)
3898 guint idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
3901 gpointer* static_data = *static_data_ptr;
3903 static MonoGCDescriptor tls_desc = MONO_GC_DESCRIPTOR_NULL;
3904 static MonoGCDescriptor ctx_desc = MONO_GC_DESCRIPTOR_NULL;
3906 if (mono_gc_user_markers_supported ()) {
3907 if (tls_desc == MONO_GC_DESCRIPTOR_NULL)
3908 tls_desc = mono_gc_make_root_descr_user (mark_tls_slots);
3910 if (ctx_desc == MONO_GC_DESCRIPTOR_NULL)
3911 ctx_desc = mono_gc_make_root_descr_user (mark_ctx_slots);
3914 static_data = (void **)mono_gc_alloc_fixed (static_data_size [0], threadlocal ? tls_desc : ctx_desc,
3915 threadlocal ? MONO_ROOT_SOURCE_THREAD_STATIC : MONO_ROOT_SOURCE_CONTEXT_STATIC,
3916 threadlocal ? "managed thread-static variables" : "managed context-static variables");
3917 *static_data_ptr = static_data;
3918 static_data [0] = static_data;
3921 for (i = 1; i <= idx; ++i) {
3922 if (static_data [i])
3925 if (mono_gc_user_markers_supported ())
3926 static_data [i] = g_malloc0 (static_data_size [i]);
3928 static_data [i] = mono_gc_alloc_fixed (static_data_size [i], MONO_GC_DESCRIPTOR_NULL,
3929 threadlocal ? MONO_ROOT_SOURCE_THREAD_STATIC : MONO_ROOT_SOURCE_CONTEXT_STATIC,
3930 threadlocal ? "managed thread-static variables" : "managed context-static variables");
3935 mono_free_static_data (gpointer* static_data)
3938 for (i = 1; i < NUM_STATIC_DATA_IDX; ++i) {
3939 gpointer p = static_data [i];
3943 * At this point, the static data pointer array is still registered with the
3944 * GC, so must ensure that mark_tls_slots() will not encounter any invalid
3945 * data. Freeing the individual arrays without first nulling their slots
3946 * would make it possible for mark_tls/ctx_slots() to encounter a pointer to
3947 * such an already freed array. See bug #13813.
3949 static_data [i] = NULL;
3950 mono_memory_write_barrier ();
3951 if (mono_gc_user_markers_supported ())
3954 mono_gc_free_fixed (p);
3956 mono_gc_free_fixed (static_data);
3960 * mono_init_static_data_info
3962 * Initializes static data counters
3964 static void mono_init_static_data_info (StaticDataInfo *static_data)
3966 static_data->idx = 0;
3967 static_data->offset = 0;
3968 static_data->freelist = NULL;
3972 * mono_alloc_static_data_slot
3974 * Generates an offset for static data. static_data contains the counters
3975 * used to generate it.
3978 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align)
3980 if (!static_data->idx && !static_data->offset) {
3982 * we use the first chunk of the first allocation also as
3983 * an array for the rest of the data
3985 static_data->offset = sizeof (gpointer) * NUM_STATIC_DATA_IDX;
3987 static_data->offset += align - 1;
3988 static_data->offset &= ~(align - 1);
3989 if (static_data->offset + size >= static_data_size [static_data->idx]) {
3990 static_data->idx ++;
3991 g_assert (size <= static_data_size [static_data->idx]);
3992 g_assert (static_data->idx < NUM_STATIC_DATA_IDX);
3993 static_data->offset = 0;
3995 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (static_data->idx, static_data->offset, 0);
3996 static_data->offset += size;
4001 * LOCKING: requires that threads_mutex is held
4004 context_adjust_static_data (MonoAppContext *ctx)
4006 if (context_static_info.offset || context_static_info.idx > 0) {
4007 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (context_static_info.idx, context_static_info.offset, 0);
4008 mono_alloc_static_data (&ctx->static_data, offset, FALSE);
4009 ctx->data->static_data = ctx->static_data;
4014 * LOCKING: requires that threads_mutex is held
4017 alloc_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
4019 MonoInternalThread *thread = (MonoInternalThread *)value;
4020 guint32 offset = GPOINTER_TO_UINT (user);
4022 mono_alloc_static_data (&(thread->static_data), offset, TRUE);
4026 * LOCKING: requires that threads_mutex is held
4029 alloc_context_static_data_helper (gpointer key, gpointer value, gpointer user)
4031 MonoAppContext *ctx = (MonoAppContext *) mono_gchandle_get_target (GPOINTER_TO_INT (key));
4036 guint32 offset = GPOINTER_TO_UINT (user);
4037 mono_alloc_static_data (&ctx->static_data, offset, FALSE);
4038 ctx->data->static_data = ctx->static_data;
4041 static StaticDataFreeList*
4042 search_slot_in_freelist (StaticDataInfo *static_data, guint32 size, guint32 align)
4044 StaticDataFreeList* prev = NULL;
4045 StaticDataFreeList* tmp = static_data->freelist;
4047 if (tmp->size == size) {
4049 prev->next = tmp->next;
4051 static_data->freelist = tmp->next;
4060 #if SIZEOF_VOID_P == 4
4067 update_reference_bitmap (MonoBitSet **sets, guint32 offset, uintptr_t *bitmap, int numbits)
4069 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4071 sets [idx] = mono_bitset_new (static_data_size [idx] / sizeof (uintptr_t), 0);
4072 MonoBitSet *rb = sets [idx];
4073 offset = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
4074 offset /= sizeof (uintptr_t);
4075 /* offset is now the bitmap offset */
4076 for (int i = 0; i < numbits; ++i) {
4077 if (bitmap [i / sizeof (uintptr_t)] & (ONE_P << (i & (sizeof (uintptr_t) * 8 -1))))
4078 mono_bitset_set_fast (rb, offset + i);
4083 clear_reference_bitmap (MonoBitSet **sets, guint32 offset, guint32 size)
4085 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4086 MonoBitSet *rb = sets [idx];
4087 offset = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
4088 offset /= sizeof (uintptr_t);
4089 /* offset is now the bitmap offset */
4090 for (int i = 0; i < size / sizeof (uintptr_t); i++)
4091 mono_bitset_clear_fast (rb, offset + i);
4095 mono_alloc_special_static_data (guint32 static_type, guint32 size, guint32 align, uintptr_t *bitmap, int numbits)
4097 g_assert (static_type == SPECIAL_STATIC_THREAD || static_type == SPECIAL_STATIC_CONTEXT);
4099 StaticDataInfo *info;
4102 if (static_type == SPECIAL_STATIC_THREAD) {
4103 info = &thread_static_info;
4104 sets = thread_reference_bitmaps;
4106 info = &context_static_info;
4107 sets = context_reference_bitmaps;
4110 mono_threads_lock ();
4112 StaticDataFreeList *item = search_slot_in_freelist (info, size, align);
4116 offset = item->offset;
4119 offset = mono_alloc_static_data_slot (info, size, align);
4122 update_reference_bitmap (sets, offset, bitmap, numbits);
4124 if (static_type == SPECIAL_STATIC_THREAD) {
4125 /* This can be called during startup */
4126 if (threads != NULL)
4127 mono_g_hash_table_foreach (threads, alloc_thread_static_data_helper, GUINT_TO_POINTER (offset));
4129 if (contexts != NULL)
4130 g_hash_table_foreach (contexts, alloc_context_static_data_helper, GUINT_TO_POINTER (offset));
4132 ACCESS_SPECIAL_STATIC_OFFSET (offset, type) = SPECIAL_STATIC_OFFSET_TYPE_CONTEXT;
4135 mono_threads_unlock ();
4141 mono_get_special_static_data_for_thread (MonoInternalThread *thread, guint32 offset)
4143 guint32 static_type = ACCESS_SPECIAL_STATIC_OFFSET (offset, type);
4145 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4146 return get_thread_static_data (thread, offset);
4148 return get_context_static_data (thread->current_appcontext, offset);
4153 mono_get_special_static_data (guint32 offset)
4155 return mono_get_special_static_data_for_thread (mono_thread_internal_current (), offset);
4164 * LOCKING: requires that threads_mutex is held
4167 free_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
4169 MonoInternalThread *thread = (MonoInternalThread *)value;
4170 OffsetSize *data = (OffsetSize *)user;
4171 int idx = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, index);
4172 int off = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, offset);
4175 if (!thread->static_data || !thread->static_data [idx])
4177 ptr = ((char*) thread->static_data [idx]) + off;
4178 mono_gc_bzero_atomic (ptr, data->size);
4182 * LOCKING: requires that threads_mutex is held
4185 free_context_static_data_helper (gpointer key, gpointer value, gpointer user)
4187 MonoAppContext *ctx = (MonoAppContext *) mono_gchandle_get_target (GPOINTER_TO_INT (key));
4192 OffsetSize *data = (OffsetSize *)user;
4193 int idx = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, index);
4194 int off = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, offset);
4197 if (!ctx->static_data || !ctx->static_data [idx])
4200 ptr = ((char*) ctx->static_data [idx]) + off;
4201 mono_gc_bzero_atomic (ptr, data->size);
4205 do_free_special_slot (guint32 offset, guint32 size)
4207 guint32 static_type = ACCESS_SPECIAL_STATIC_OFFSET (offset, type);
4209 StaticDataInfo *info;
4211 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4212 info = &thread_static_info;
4213 sets = thread_reference_bitmaps;
4215 info = &context_static_info;
4216 sets = context_reference_bitmaps;
4219 guint32 data_offset = offset;
4220 ACCESS_SPECIAL_STATIC_OFFSET (data_offset, type) = 0;
4221 OffsetSize data = { data_offset, size };
4223 clear_reference_bitmap (sets, data.offset, data.size);
4225 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4226 if (threads != NULL)
4227 mono_g_hash_table_foreach (threads, free_thread_static_data_helper, &data);
4229 if (contexts != NULL)
4230 g_hash_table_foreach (contexts, free_context_static_data_helper, &data);
4233 if (!mono_runtime_is_shutting_down ()) {
4234 StaticDataFreeList *item = g_new0 (StaticDataFreeList, 1);
4236 item->offset = offset;
4239 item->next = info->freelist;
4240 info->freelist = item;
4245 do_free_special (gpointer key, gpointer value, gpointer data)
4247 MonoClassField *field = (MonoClassField *)key;
4248 guint32 offset = GPOINTER_TO_UINT (value);
4251 size = mono_type_size (field->type, &align);
4252 do_free_special_slot (offset, size);
4256 mono_alloc_special_static_data_free (GHashTable *special_static_fields)
4258 mono_threads_lock ();
4260 g_hash_table_foreach (special_static_fields, do_free_special, NULL);
4262 mono_threads_unlock ();
4266 static void CALLBACK dummy_apc (ULONG_PTR param)
4272 * mono_thread_execute_interruption
4274 * Performs the operation that the requested thread state requires (abort,
4277 static MonoException*
4278 mono_thread_execute_interruption (void)
4280 MonoInternalThread *thread = mono_thread_internal_current ();
4281 MonoThread *sys_thread = mono_thread_current ();
4283 LOCK_THREAD (thread);
4285 /* MonoThread::interruption_requested can only be changed with atomics */
4286 if (InterlockedCompareExchange (&thread->interruption_requested, FALSE, TRUE)) {
4287 /* this will consume pending APC calls */
4289 WaitForSingleObjectEx (GetCurrentThread(), 0, TRUE);
4291 InterlockedDecrement (&thread_interruption_requested);
4293 /* Clear the interrupted flag of the thread so it can wait again */
4294 mono_thread_info_clear_self_interrupt ();
4297 /* If there's a pending exception and an AbortRequested, the pending exception takes precedence */
4298 if (sys_thread->pending_exception) {
4301 exc = sys_thread->pending_exception;
4302 sys_thread->pending_exception = NULL;
4304 UNLOCK_THREAD (thread);
4306 } else if ((thread->state & ThreadState_AbortRequested) != 0) {
4307 UNLOCK_THREAD (thread);
4308 g_assert (sys_thread->pending_exception == NULL);
4309 if (thread->abort_exc == NULL) {
4311 * This might be racy, but it has to be called outside the lock
4312 * since it calls managed code.
4314 MONO_OBJECT_SETREF (thread, abort_exc, mono_get_exception_thread_abort ());
4316 return thread->abort_exc;
4318 else if ((thread->state & ThreadState_SuspendRequested) != 0) {
4319 /* calls UNLOCK_THREAD (thread) */
4320 self_suspend_internal ();
4323 else if ((thread->state & ThreadState_StopRequested) != 0) {
4324 /* FIXME: do this through the JIT? */
4326 UNLOCK_THREAD (thread);
4328 mono_thread_exit ();
4330 } else if (thread->thread_interrupt_requested) {
4332 thread->thread_interrupt_requested = FALSE;
4333 UNLOCK_THREAD (thread);
4335 return(mono_get_exception_thread_interrupted ());
4338 UNLOCK_THREAD (thread);
4344 * mono_thread_request_interruption
4346 * A signal handler can call this method to request the interruption of a
4347 * thread. The result of the interruption will depend on the current state of
4348 * the thread. If the result is an exception that needs to be throw, it is
4349 * provided as return value.
4352 mono_thread_request_interruption (gboolean running_managed)
4354 MonoInternalThread *thread = mono_thread_internal_current ();
4356 /* The thread may already be stopping */
4361 if (thread->interrupt_on_stop &&
4362 thread->state & ThreadState_StopRequested &&
4363 thread->state & ThreadState_Background)
4366 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4368 InterlockedIncrement (&thread_interruption_requested);
4370 if (!running_managed || is_running_protected_wrapper ()) {
4371 /* Can't stop while in unmanaged code. Increase the global interruption
4372 request count. When exiting the unmanaged method the count will be
4373 checked and the thread will be interrupted. */
4375 /* this will awake the thread if it is in WaitForSingleObject
4377 /* Our implementation of this function ignores the func argument */
4379 QueueUserAPC ((PAPCFUNC)dummy_apc, thread->native_handle, (ULONG_PTR)NULL);
4381 mono_thread_info_self_interrupt ();
4386 return mono_thread_execute_interruption ();
4390 /*This function should be called by a thread after it has exited all of
4391 * its handle blocks at interruption time.*/
4393 mono_thread_resume_interruption (void)
4395 MonoInternalThread *thread = mono_thread_internal_current ();
4396 gboolean still_aborting;
4398 /* The thread may already be stopping */
4402 LOCK_THREAD (thread);
4403 still_aborting = (thread->state & (ThreadState_AbortRequested|ThreadState_StopRequested)) != 0;
4404 UNLOCK_THREAD (thread);
4406 /*This can happen if the protected block called Thread::ResetAbort*/
4407 if (!still_aborting)
4410 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4412 InterlockedIncrement (&thread_interruption_requested);
4414 mono_thread_info_self_interrupt ();
4416 return mono_thread_execute_interruption ();
4419 gboolean mono_thread_interruption_requested ()
4421 if (thread_interruption_requested) {
4422 MonoInternalThread *thread = mono_thread_internal_current ();
4423 /* The thread may already be stopping */
4425 return (thread->interruption_requested);
4430 static MonoException*
4431 mono_thread_interruption_checkpoint_request (gboolean bypass_abort_protection)
4433 MonoInternalThread *thread = mono_thread_internal_current ();
4435 /* The thread may already be stopping */
4439 if (thread->interruption_requested && (bypass_abort_protection || !is_running_protected_wrapper ())) {
4440 MonoException* exc = mono_thread_execute_interruption ();
4448 * Performs the interruption of the current thread, if one has been requested,
4449 * and the thread is not running a protected wrapper.
4450 * Return the exception which needs to be thrown, if any.
4453 mono_thread_interruption_checkpoint (void)
4455 return mono_thread_interruption_checkpoint_request (FALSE);
4459 * Performs the interruption of the current thread, if one has been requested.
4460 * Return the exception which needs to be thrown, if any.
4463 mono_thread_force_interruption_checkpoint_noraise (void)
4465 return mono_thread_interruption_checkpoint_request (TRUE);
4469 * mono_set_pending_exception:
4471 * Set the pending exception of the current thread to EXC.
4472 * The exception will be thrown when execution returns to managed code.
4475 mono_set_pending_exception (MonoException *exc)
4477 MonoThread *thread = mono_thread_current ();
4479 /* The thread may already be stopping */
4483 MONO_OBJECT_SETREF (thread, pending_exception, exc);
4485 mono_thread_request_interruption (FALSE);
4489 * mono_thread_interruption_request_flag:
4491 * Returns the address of a flag that will be non-zero if an interruption has
4492 * been requested for a thread. The thread to interrupt may not be the current
4493 * thread, so an additional call to mono_thread_interruption_requested() or
4494 * mono_thread_interruption_checkpoint() is allways needed if the flag is not
4497 gint32* mono_thread_interruption_request_flag ()
4499 return &thread_interruption_requested;
4503 mono_thread_init_apartment_state (void)
4506 MonoInternalThread* thread = mono_thread_internal_current ();
4508 /* Positive return value indicates success, either
4509 * S_OK if this is first CoInitialize call, or
4510 * S_FALSE if CoInitialize already called, but with same
4511 * threading model. A negative value indicates failure,
4512 * probably due to trying to change the threading model.
4514 if (CoInitializeEx(NULL, (thread->apartment_state == ThreadApartmentState_STA)
4515 ? COINIT_APARTMENTTHREADED
4516 : COINIT_MULTITHREADED) < 0) {
4517 thread->apartment_state = ThreadApartmentState_Unknown;
4523 mono_thread_cleanup_apartment_state (void)
4526 MonoInternalThread* thread = mono_thread_internal_current ();
4528 if (thread && thread->apartment_state != ThreadApartmentState_Unknown) {
4535 mono_thread_set_state (MonoInternalThread *thread, MonoThreadState state)
4537 LOCK_THREAD (thread);
4538 thread->state |= state;
4539 UNLOCK_THREAD (thread);
4543 * mono_thread_test_and_set_state:
4545 * Test if current state of @thread include @test. If it does not, OR @set into the state.
4547 * Returns TRUE is @set was OR'd in.
4550 mono_thread_test_and_set_state (MonoInternalThread *thread, MonoThreadState test, MonoThreadState set)
4552 LOCK_THREAD (thread);
4554 if ((thread->state & test) != 0) {
4555 UNLOCK_THREAD (thread);
4559 thread->state |= set;
4560 UNLOCK_THREAD (thread);
4566 mono_thread_clr_state (MonoInternalThread *thread, MonoThreadState state)
4568 LOCK_THREAD (thread);
4569 thread->state &= ~state;
4570 UNLOCK_THREAD (thread);
4574 mono_thread_test_state (MonoInternalThread *thread, MonoThreadState test)
4576 gboolean ret = FALSE;
4578 LOCK_THREAD (thread);
4580 if ((thread->state & test) != 0) {
4584 UNLOCK_THREAD (thread);
4589 static gboolean has_tls_get = FALSE;
4592 mono_runtime_set_has_tls_get (gboolean val)
4598 mono_runtime_has_tls_get (void)
4604 self_interrupt_thread (void *_unused)
4607 MonoThreadInfo *info;
4609 exc = mono_thread_execute_interruption ();
4611 if (mono_threads_is_coop_enabled ()) {
4612 /* We can return from an async call in coop, as
4613 * it's simply called when exiting the safepoint */
4617 g_error ("%s: we can't resume from an async call", __func__);
4620 info = mono_thread_info_current ();
4622 /* We must use _with_context since we didn't trampoline into the runtime */
4623 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. */
4627 mono_jit_info_match (MonoJitInfo *ji, gpointer ip)
4631 return ji->code_start <= ip && (char*)ip < (char*)ji->code_start + ji->code_size;
4635 last_managed (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
4637 MonoJitInfo **dest = (MonoJitInfo **)data;
4643 mono_thread_info_get_last_managed (MonoThreadInfo *info)
4645 MonoJitInfo *ji = NULL;
4650 * The suspended thread might be holding runtime locks. Make sure we don't try taking
4651 * any runtime locks while unwinding. In coop case we shouldn't safepoint in regions
4652 * where we hold runtime locks.
4654 if (!mono_threads_is_coop_enabled ())
4655 mono_thread_info_set_is_async_context (TRUE);
4656 mono_get_eh_callbacks ()->mono_walk_stack_with_state (last_managed, mono_thread_info_get_suspend_state (info), MONO_UNWIND_SIGNAL_SAFE, &ji);
4657 if (!mono_threads_is_coop_enabled ())
4658 mono_thread_info_set_is_async_context (FALSE);
4663 MonoInternalThread *thread;
4664 gboolean install_async_abort;
4665 MonoThreadInfoInterruptToken *interrupt_token;
4668 static SuspendThreadResult
4669 async_abort_critical (MonoThreadInfo *info, gpointer ud)
4671 AbortThreadData *data = (AbortThreadData *)ud;
4672 MonoInternalThread *thread = data->thread;
4673 MonoJitInfo *ji = NULL;
4674 gboolean protected_wrapper;
4675 gboolean running_managed;
4677 if (mono_get_eh_callbacks ()->mono_install_handler_block_guard (mono_thread_info_get_suspend_state (info)))
4678 return MonoResumeThread;
4681 The target thread is running at least one protected block, which must not be interrupted, so we give up.
4682 The protected block code will give them a chance when appropriate.
4684 if (thread->abort_protected_block_count)
4685 return MonoResumeThread;
4687 /*someone is already interrupting it*/
4688 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4689 return MonoResumeThread;
4691 InterlockedIncrement (&thread_interruption_requested);
4693 ji = mono_thread_info_get_last_managed (info);
4694 protected_wrapper = ji && !ji->is_trampoline && !ji->async && mono_threads_is_critical_method (mono_jit_info_get_method (ji));
4695 running_managed = mono_jit_info_match (ji, MONO_CONTEXT_GET_IP (&mono_thread_info_get_suspend_state (info)->ctx));
4697 if (!protected_wrapper && running_managed) {
4698 /*We are in managed code*/
4699 /*Set the thread to call */
4700 if (data->install_async_abort)
4701 mono_thread_info_setup_async_call (info, self_interrupt_thread, NULL);
4702 return MonoResumeThread;
4705 * This will cause waits to be broken.
4706 * It will also prevent the thread from entering a wait, so if the thread returns
4707 * from the wait before it receives the abort signal, it will just spin in the wait
4708 * functions in the io-layer until the signal handler calls QueueUserAPC which will
4711 data->interrupt_token = mono_thread_info_prepare_interrupt (info);
4713 return MonoResumeThread;
4718 async_abort_internal (MonoInternalThread *thread, gboolean install_async_abort)
4720 AbortThreadData data;
4722 g_assert (thread != mono_thread_internal_current ());
4724 data.thread = thread;
4725 data.install_async_abort = install_async_abort;
4726 data.interrupt_token = NULL;
4728 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), TRUE, async_abort_critical, &data);
4729 if (data.interrupt_token)
4730 mono_thread_info_finish_interrupt (data.interrupt_token);
4731 /*FIXME we need to wait for interruption to complete -- figure out how much into interruption we should wait for here*/
4735 self_abort_internal (MonoError *error)
4739 mono_error_init (error);
4741 /* FIXME this is insanely broken, it doesn't cause interruption to happen synchronously
4742 * since passing FALSE to mono_thread_request_interruption makes sure it returns NULL */
4745 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.
4747 exc = mono_thread_request_interruption (TRUE);
4749 mono_error_set_exception_instance (error, exc);
4751 mono_thread_info_self_interrupt ();
4755 MonoInternalThread *thread;
4757 MonoThreadInfoInterruptToken *interrupt_token;
4758 } SuspendThreadData;
4760 static SuspendThreadResult
4761 async_suspend_critical (MonoThreadInfo *info, gpointer ud)
4763 SuspendThreadData *data = (SuspendThreadData *)ud;
4764 MonoInternalThread *thread = data->thread;
4765 MonoJitInfo *ji = NULL;
4766 gboolean protected_wrapper;
4767 gboolean running_managed;
4769 ji = mono_thread_info_get_last_managed (info);
4770 protected_wrapper = ji && !ji->is_trampoline && !ji->async && mono_threads_is_critical_method (mono_jit_info_get_method (ji));
4771 running_managed = mono_jit_info_match (ji, MONO_CONTEXT_GET_IP (&mono_thread_info_get_suspend_state (info)->ctx));
4773 if (running_managed && !protected_wrapper) {
4774 if (mono_threads_is_coop_enabled ()) {
4775 mono_thread_info_setup_async_call (info, self_interrupt_thread, NULL);
4776 return MonoResumeThread;
4778 thread->state &= ~ThreadState_SuspendRequested;
4779 thread->state |= ThreadState_Suspended;
4780 return KeepSuspended;
4783 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 0)
4784 InterlockedIncrement (&thread_interruption_requested);
4785 if (data->interrupt)
4786 data->interrupt_token = mono_thread_info_prepare_interrupt ((MonoThreadInfo *)thread->thread_info);
4788 return MonoResumeThread;
4792 /* LOCKING: called with @thread synch_cs held, and releases it */
4794 async_suspend_internal (MonoInternalThread *thread, gboolean interrupt)
4796 SuspendThreadData data;
4798 g_assert (thread != mono_thread_internal_current ());
4800 // MOSTLY_ASYNC_SAFE_PRINTF ("ASYNC SUSPEND thread %p\n", thread_get_tid (thread));
4802 thread->self_suspended = FALSE;
4804 data.thread = thread;
4805 data.interrupt = interrupt;
4806 data.interrupt_token = NULL;
4808 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), interrupt, async_suspend_critical, &data);
4809 if (data.interrupt_token)
4810 mono_thread_info_finish_interrupt (data.interrupt_token);
4812 UNLOCK_THREAD (thread);
4815 /* LOCKING: called with @thread synch_cs held, and releases it */
4817 self_suspend_internal (void)
4819 MonoInternalThread *thread;
4821 MonoOSEventWaitRet res;
4823 thread = mono_thread_internal_current ();
4825 // MOSTLY_ASYNC_SAFE_PRINTF ("SELF SUSPEND thread %p\n", thread_get_tid (thread));
4827 thread->self_suspended = TRUE;
4829 thread->state &= ~ThreadState_SuspendRequested;
4830 thread->state |= ThreadState_Suspended;
4832 UNLOCK_THREAD (thread);
4834 event = thread->suspended;
4837 res = mono_os_event_wait_one (event, MONO_INFINITE_WAIT);
4838 g_assert (res == MONO_OS_EVENT_WAIT_RET_SUCCESS_0 || res == MONO_OS_EVENT_WAIT_RET_ALERTED);
4843 * mono_thread_is_foreign:
4844 * @thread: the thread to query
4846 * This function allows one to determine if a thread was created by the mono runtime and has
4847 * a well defined lifecycle or it's a foreigh one, created by the native environment.
4849 * Returns: TRUE if @thread was not created by the runtime.
4852 mono_thread_is_foreign (MonoThread *thread)
4854 MonoThreadInfo *info = (MonoThreadInfo *)thread->internal_thread->thread_info;
4855 return info->runtime_thread == FALSE;
4859 * mono_add_joinable_thread:
4861 * Add TID to the list of joinable threads.
4862 * LOCKING: Acquires the threads lock.
4865 mono_threads_add_joinable_thread (gpointer tid)
4869 * We cannot detach from threads because it causes problems like
4870 * 2fd16f60/r114307. So we collect them and join them when
4871 * we have time (in he finalizer thread).
4873 joinable_threads_lock ();
4874 if (!joinable_threads)
4875 joinable_threads = g_hash_table_new (NULL, NULL);
4876 g_hash_table_insert (joinable_threads, tid, tid);
4877 joinable_thread_count ++;
4878 joinable_threads_unlock ();
4880 mono_gc_finalize_notify ();
4885 * mono_threads_join_threads:
4887 * Join all joinable threads. This is called from the finalizer thread.
4888 * LOCKING: Acquires the threads lock.
4891 mono_threads_join_threads (void)
4894 GHashTableIter iter;
4901 if (!joinable_thread_count)
4905 joinable_threads_lock ();
4907 if (g_hash_table_size (joinable_threads)) {
4908 g_hash_table_iter_init (&iter, joinable_threads);
4909 g_hash_table_iter_next (&iter, &key, (void**)&tid);
4910 thread = (pthread_t)tid;
4911 g_hash_table_remove (joinable_threads, key);
4912 joinable_thread_count --;
4915 joinable_threads_unlock ();
4917 if (thread != pthread_self ()) {
4919 /* This shouldn't block */
4920 mono_native_thread_join (thread);
4933 * Wait for thread TID to exit.
4934 * LOCKING: Acquires the threads lock.
4937 mono_thread_join (gpointer tid)
4941 gboolean found = FALSE;
4943 joinable_threads_lock ();
4944 if (!joinable_threads)
4945 joinable_threads = g_hash_table_new (NULL, NULL);
4946 if (g_hash_table_lookup (joinable_threads, tid)) {
4947 g_hash_table_remove (joinable_threads, tid);
4948 joinable_thread_count --;
4951 joinable_threads_unlock ();
4954 thread = (pthread_t)tid;
4956 mono_native_thread_join (thread);
4962 mono_thread_internal_check_for_interruption_critical (MonoInternalThread *thread)
4964 if ((thread->state & (ThreadState_StopRequested | ThreadState_SuspendRequested)) != 0)
4965 mono_thread_interruption_checkpoint ();
4969 mono_thread_internal_unhandled_exception (MonoObject* exc)
4971 MonoClass *klass = exc->vtable->klass;
4972 if (is_threadabort_exception (klass)) {
4973 mono_thread_internal_reset_abort (mono_thread_internal_current ());
4974 } else if (!is_appdomainunloaded_exception (klass)
4975 && mono_runtime_unhandled_exception_policy_get () == MONO_UNHANDLED_POLICY_CURRENT) {
4976 mono_unhandled_exception (exc);
4977 if (mono_environment_exitcode_get () == 1) {
4978 mono_environment_exitcode_set (255);
4979 mono_invoke_unhandled_exception_hook (exc);
4980 g_assert_not_reached ();
4986 ves_icall_System_Threading_Thread_GetStackTraces (MonoArray **out_threads, MonoArray **out_stack_traces)
4989 mono_threads_get_thread_dump (out_threads, out_stack_traces, &error);
4990 mono_error_set_pending_exception (&error);
4994 * mono_threads_attach_coop: called by native->managed wrappers
4998 * - @return: the original domain which needs to be restored, or NULL.
5001 * - @dummy: contains the original domain
5002 * - @return: a cookie containing current MonoThreadInfo*.
5005 mono_threads_attach_coop (MonoDomain *domain, gpointer *dummy)
5008 gboolean fresh_thread = FALSE;
5011 /* Happens when called from AOTed code which is only used in the root domain. */
5012 domain = mono_get_root_domain ();
5017 /* On coop, when we detached, we moved the thread from RUNNING->BLOCKING.
5018 * If we try to reattach we do a BLOCKING->RUNNING transition. If the thread
5019 * is fresh, mono_thread_attach() will do a STARTING->RUNNING transition so
5020 * we're only responsible for making the cookie. */
5021 if (mono_threads_is_coop_enabled ()) {
5022 MonoThreadInfo *info = mono_thread_info_current_unchecked ();
5023 fresh_thread = !info || !mono_thread_info_is_live (info);
5026 if (!mono_thread_internal_current ()) {
5027 mono_thread_attach_full (domain, FALSE);
5030 mono_thread_set_state (mono_thread_internal_current (), ThreadState_Background);
5033 orig = mono_domain_get ();
5035 mono_domain_set (domain, TRUE);
5037 if (!mono_threads_is_coop_enabled ())
5038 return orig != domain ? orig : NULL;
5042 /* mono_thread_attach put the thread in RUNNING mode from STARTING, but we need to
5043 * return the right cookie. */
5044 return mono_threads_enter_gc_unsafe_region_cookie ();
5047 /* thread state (BLOCKING|RUNNING) -> RUNNING */
5048 return mono_threads_enter_gc_unsafe_region (dummy);
5053 * mono_threads_detach_coop: called by native->managed wrappers
5056 * - @cookie: the original domain which needs to be restored, or NULL.
5060 * - @cookie: contains current MonoThreadInfo* if it was in BLOCKING mode, NULL otherwise
5061 * - @dummy: contains the original domain
5064 mono_threads_detach_coop (gpointer cookie, gpointer *dummy)
5066 MonoDomain *domain, *orig;
5068 if (!mono_threads_is_coop_enabled ()) {
5069 orig = (MonoDomain*) cookie;
5071 mono_domain_set (orig, TRUE);
5073 orig = (MonoDomain*) *dummy;
5075 domain = mono_domain_get ();
5078 /* it won't do anything if cookie is NULL
5079 * thread state RUNNING -> (RUNNING|BLOCKING) */
5080 mono_threads_exit_gc_unsafe_region (cookie, dummy);
5082 if (orig != domain) {
5084 mono_domain_unset ();
5086 mono_domain_set (orig, TRUE);
5092 mono_threads_begin_abort_protected_block (void)
5094 MonoInternalThread *thread;
5096 thread = mono_thread_internal_current ();
5097 ++thread->abort_protected_block_count;
5098 mono_memory_barrier ();
5102 mono_threads_end_abort_protected_block (void)
5104 MonoInternalThread *thread;
5106 thread = mono_thread_internal_current ();
5108 mono_memory_barrier ();
5109 --thread->abort_protected_block_count;
5113 mono_thread_try_resume_interruption (void)
5115 MonoInternalThread *thread;
5117 thread = mono_thread_internal_current ();
5118 if (thread->abort_protected_block_count || mono_get_eh_callbacks ()->mono_current_thread_has_handle_block_guard ())
5121 return mono_thread_resume_interruption ();
5125 /* Returns TRUE if the current thread is ready to be interrupted. */
5127 mono_threads_is_ready_to_be_interrupted (void)
5129 MonoInternalThread *thread;
5131 thread = mono_thread_internal_current ();
5132 LOCK_THREAD (thread);
5133 if (thread->state & (MonoThreadState)(ThreadState_StopRequested | ThreadState_SuspendRequested | ThreadState_AbortRequested)) {
5134 UNLOCK_THREAD (thread);
5138 if (thread->abort_protected_block_count || mono_get_eh_callbacks ()->mono_current_thread_has_handle_block_guard ()) {
5139 UNLOCK_THREAD (thread);
5143 UNLOCK_THREAD (thread);
5149 mono_thread_internal_describe (MonoInternalThread *internal, GString *text)
5151 g_string_append_printf (text, ", thread handle : %p", internal->handle);
5153 if (internal->thread_info) {
5154 g_string_append (text, ", state : ");
5155 mono_thread_info_describe_interrupt_token ((MonoThreadInfo*) internal->thread_info, text);
5158 if (internal->owned_mutexes) {
5161 g_string_append (text, ", owns : [");
5162 for (i = 0; i < internal->owned_mutexes->len; i++)
5163 g_string_append_printf (text, i == 0 ? "%p" : ", %p", g_ptr_array_index (internal->owned_mutexes, i));
5164 g_string_append (text, "]");
5169 mono_thread_internal_is_current (MonoInternalThread *internal)
5171 g_assert (internal);
5172 return mono_native_thread_id_equals (mono_native_thread_id_get (), MONO_UINT_TO_NATIVE_THREAD_ID (internal->tid));