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/metadata/w32handle.h>
48 #include <mono/metadata/w32event.h>
49 #include <mono/metadata/w32mutex.h>
51 #include <mono/metadata/gc-internals.h>
52 #include <mono/metadata/reflection-internals.h>
53 #include <mono/metadata/abi-details.h>
59 #if defined(HOST_WIN32)
63 #if defined(PLATFORM_ANDROID) && !defined(TARGET_ARM64) && !defined(TARGET_AMD64)
64 #define USE_TKILL_ON_ANDROID 1
67 #ifdef PLATFORM_ANDROID
70 #ifdef USE_TKILL_ON_ANDROID
71 extern int tkill (pid_t tid, int signal);
75 /*#define THREAD_DEBUG(a) do { a; } while (0)*/
76 #define THREAD_DEBUG(a)
77 /*#define THREAD_WAIT_DEBUG(a) do { a; } while (0)*/
78 #define THREAD_WAIT_DEBUG(a)
79 /*#define LIBGC_DEBUG(a) do { a; } while (0)*/
80 #define LIBGC_DEBUG(a)
82 #define SPIN_TRYLOCK(i) (InterlockedCompareExchange (&(i), 1, 0) == 0)
83 #define SPIN_LOCK(i) do { \
84 if (SPIN_TRYLOCK (i)) \
88 #define SPIN_UNLOCK(i) i = 0
90 #define LOCK_THREAD(thread) lock_thread((thread))
91 #define UNLOCK_THREAD(thread) unlock_thread((thread))
103 typedef struct _StaticDataFreeList StaticDataFreeList;
104 struct _StaticDataFreeList {
105 StaticDataFreeList *next;
113 StaticDataFreeList *freelist;
116 /* Number of cached culture objects in the MonoThread->cached_culture_info array
117 * (per-type): we use the first NUM entries for CultureInfo and the last for
118 * UICultureInfo. So the size of the array is really NUM_CACHED_CULTURES * 2.
120 #define NUM_CACHED_CULTURES 4
121 #define CULTURES_START_IDX 0
122 #define UICULTURES_START_IDX NUM_CACHED_CULTURES
124 /* Controls access to the 'threads' hash table */
125 static void mono_threads_lock (void);
126 static void mono_threads_unlock (void);
127 static MonoCoopMutex threads_mutex;
129 /* Controls access to the 'joinable_threads' hash table */
130 #define joinable_threads_lock() mono_os_mutex_lock (&joinable_threads_mutex)
131 #define joinable_threads_unlock() mono_os_mutex_unlock (&joinable_threads_mutex)
132 static mono_mutex_t joinable_threads_mutex;
134 /* Holds current status of static data heap */
135 static StaticDataInfo thread_static_info;
136 static StaticDataInfo context_static_info;
138 /* The hash of existing threads (key is thread ID, value is
139 * MonoInternalThread*) that need joining before exit
141 static MonoGHashTable *threads=NULL;
143 /* List of app context GC handles.
144 * Added to from ves_icall_System_Runtime_Remoting_Contexts_Context_RegisterContext ().
146 static GHashTable *contexts = NULL;
148 /* Cleanup queue for contexts. */
149 static MonoReferenceQueue *context_queue;
152 * Threads which are starting up and they are not in the 'threads' hash yet.
153 * When mono_thread_attach_internal is called for a thread, it will be removed from this hash table.
154 * Protected by mono_threads_lock ().
156 static MonoGHashTable *threads_starting_up = NULL;
158 /* The TLS key that holds the MonoObject assigned to each thread */
159 static MonoNativeTlsKey current_object_key;
162 /* Protected by the threads lock */
163 static GHashTable *joinable_threads;
164 static int joinable_thread_count;
166 #ifdef MONO_HAVE_FAST_TLS
167 /* we need to use both the Tls* functions and __thread because
168 * the gc needs to see all the threads
170 MONO_FAST_TLS_DECLARE(tls_current_object);
171 #define SET_CURRENT_OBJECT(x) do { \
172 MONO_FAST_TLS_SET (tls_current_object, x); \
173 mono_native_tls_set_value (current_object_key, x); \
175 #define GET_CURRENT_OBJECT() ((MonoInternalThread*) MONO_FAST_TLS_GET (tls_current_object))
177 #define SET_CURRENT_OBJECT(x) mono_native_tls_set_value (current_object_key, x)
178 #define GET_CURRENT_OBJECT() (MonoInternalThread*) mono_native_tls_get_value (current_object_key)
181 /* function called at thread start */
182 static MonoThreadStartCB mono_thread_start_cb = NULL;
184 /* function called at thread attach */
185 static MonoThreadAttachCB mono_thread_attach_cb = NULL;
187 /* function called at thread cleanup */
188 static MonoThreadCleanupFunc mono_thread_cleanup_fn = NULL;
190 /* The default stack size for each thread */
191 static guint32 default_stacksize = 0;
192 #define default_stacksize_for_thread(thread) ((thread)->stack_size? (thread)->stack_size: default_stacksize)
194 static void context_adjust_static_data (MonoAppContext *ctx);
195 static void mono_free_static_data (gpointer* static_data);
196 static void mono_init_static_data_info (StaticDataInfo *static_data);
197 static guint32 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align);
198 static gboolean mono_thread_resume (MonoInternalThread* thread);
199 static void async_abort_internal (MonoInternalThread *thread, gboolean install_async_abort);
200 static void self_abort_internal (MonoError *error);
201 static void async_suspend_internal (MonoInternalThread *thread, gboolean interrupt);
202 static void self_suspend_internal (void);
204 static MonoException* mono_thread_execute_interruption (void);
205 static void ref_stack_destroy (gpointer rs);
207 /* Spin lock for InterlockedXXX 64 bit functions */
208 #define mono_interlocked_lock() mono_os_mutex_lock (&interlocked_mutex)
209 #define mono_interlocked_unlock() mono_os_mutex_unlock (&interlocked_mutex)
210 static mono_mutex_t interlocked_mutex;
212 /* global count of thread interruptions requested */
213 static gint32 thread_interruption_requested = 0;
215 /* Event signaled when a thread changes its background mode */
216 static MonoOSEvent background_change_event;
218 static gboolean shutting_down = FALSE;
220 static gint32 managed_thread_id_counter = 0;
222 /* Class lazy loading functions */
223 static GENERATE_GET_CLASS_WITH_CACHE (appdomain_unloaded_exception, System, AppDomainUnloadedException)
226 mono_threads_lock (void)
228 mono_locks_coop_acquire (&threads_mutex, ThreadsLock);
232 mono_threads_unlock (void)
234 mono_locks_coop_release (&threads_mutex, ThreadsLock);
239 get_next_managed_thread_id (void)
241 return InterlockedIncrement (&managed_thread_id_counter);
245 mono_thread_get_tls_key (void)
247 return current_object_key;
251 mono_thread_get_tls_offset (void)
256 if (current_object_key)
257 offset = current_object_key;
259 MONO_THREAD_VAR_OFFSET (tls_current_object,offset);
264 static inline MonoNativeThreadId
265 thread_get_tid (MonoInternalThread *thread)
267 /* We store the tid as a guint64 to keep the object layout constant between platforms */
268 return MONO_UINT_TO_NATIVE_THREAD_ID (thread->tid);
271 static void ensure_synch_cs_set (MonoInternalThread *thread)
273 MonoCoopMutex *synch_cs;
275 if (thread->synch_cs != NULL) {
279 synch_cs = g_new0 (MonoCoopMutex, 1);
280 mono_coop_mutex_init_recursive (synch_cs);
282 if (InterlockedCompareExchangePointer ((gpointer *)&thread->synch_cs,
283 synch_cs, NULL) != NULL) {
284 /* Another thread must have installed this CS */
285 mono_coop_mutex_destroy (synch_cs);
291 lock_thread (MonoInternalThread *thread)
293 if (!thread->synch_cs)
294 ensure_synch_cs_set (thread);
296 g_assert (thread->synch_cs);
298 mono_coop_mutex_lock (thread->synch_cs);
302 unlock_thread (MonoInternalThread *thread)
304 mono_coop_mutex_unlock (thread->synch_cs);
307 static inline gboolean
308 is_appdomainunloaded_exception (MonoClass *klass)
310 return klass == mono_class_get_appdomain_unloaded_exception_class ();
313 static inline gboolean
314 is_threadabort_exception (MonoClass *klass)
316 return klass == mono_defaults.threadabortexception_class;
320 * NOTE: this function can be called also for threads different from the current one:
321 * make sure no code called from it will ever assume it is run on the thread that is
322 * getting cleaned up.
324 static void thread_cleanup (MonoInternalThread *thread)
328 g_assert (thread != NULL);
330 if (thread->abort_state_handle) {
331 mono_gchandle_free (thread->abort_state_handle);
332 thread->abort_state_handle = 0;
334 thread->abort_exc = NULL;
335 thread->current_appcontext = NULL;
338 * This is necessary because otherwise we might have
339 * cross-domain references which will not get cleaned up when
340 * the target domain is unloaded.
342 if (thread->cached_culture_info) {
344 for (i = 0; i < NUM_CACHED_CULTURES * 2; ++i)
345 mono_array_set (thread->cached_culture_info, MonoObject*, i, NULL);
349 * thread->synch_cs can be NULL if this was called after
350 * ves_icall_System_Threading_InternalThread_Thread_free_internal.
351 * This can happen only during shutdown.
352 * The shutting_down flag is not always set, so we can't assert on it.
354 if (thread->synch_cs)
355 LOCK_THREAD (thread);
357 thread->state |= ThreadState_Stopped;
358 thread->state &= ~ThreadState_Background;
360 if (thread->synch_cs)
361 UNLOCK_THREAD (thread);
364 An interruption request has leaked to cleanup. Adjust the global counter.
366 This can happen is the abort source thread finds the abortee (this) thread
367 in unmanaged code. If this thread never trips back to managed code or check
368 the local flag it will be left set and positively unbalance the global counter.
370 Leaving the counter unbalanced will cause a performance degradation since all threads
371 will now keep checking their local flags all the time.
373 if (InterlockedExchange (&thread->interruption_requested, 0))
374 InterlockedDecrement (&thread_interruption_requested);
376 mono_threads_lock ();
380 } else if (mono_g_hash_table_lookup (threads, (gpointer)thread->tid) != thread) {
381 /* We have to check whether the thread object for the
382 * tid is still the same in the table because the
383 * thread might have been destroyed and the tid reused
384 * in the meantime, in which case the tid would be in
385 * the table, but with another thread object.
389 mono_g_hash_table_remove (threads, (gpointer)thread->tid);
393 mono_threads_unlock ();
395 /* Don't close the handle here, wait for the object finalizer
396 * to do it. Otherwise, the following race condition applies:
398 * 1) Thread exits (and thread_cleanup() closes the handle)
400 * 2) Some other handle is reassigned the same slot
402 * 3) Another thread tries to join the first thread, and
403 * blocks waiting for the reassigned handle to be signalled
404 * (which might never happen). This is possible, because the
405 * thread calling Join() still has a reference to the first
409 /* if the thread is not in the hash it has been removed already */
411 if (thread == mono_thread_internal_current ()) {
412 mono_domain_unset ();
413 mono_memory_barrier ();
415 if (mono_thread_cleanup_fn)
416 mono_thread_cleanup_fn (thread_get_tid (thread));
419 mono_release_type_locks (thread);
421 /* Can happen when we attach the profiler helper thread in order to heapshot. */
422 if (!mono_thread_info_lookup (MONO_UINT_TO_NATIVE_THREAD_ID (thread->tid))->tools_thread)
423 mono_profiler_thread_end (thread->tid);
425 mono_hazard_pointer_clear (mono_hazard_pointer_get (), 1);
427 if (thread == mono_thread_internal_current ()) {
429 * This will signal async signal handlers that the thread has exited.
430 * The profiler callback needs this to be set, so it cannot be done earlier.
432 mono_domain_unset ();
433 mono_memory_barrier ();
436 if (thread == mono_thread_internal_current ())
437 mono_thread_pop_appdomain_ref ();
439 thread->cached_culture_info = NULL;
441 mono_free_static_data (thread->static_data);
442 thread->static_data = NULL;
443 ref_stack_destroy (thread->appdomain_refs);
444 thread->appdomain_refs = NULL;
446 if (mono_thread_cleanup_fn)
447 mono_thread_cleanup_fn (thread_get_tid (thread));
449 if (mono_gc_is_moving ()) {
450 MONO_GC_UNREGISTER_ROOT (thread->thread_pinning_ref);
451 thread->thread_pinning_ref = NULL;
457 * A special static data offset (guint32) consists of 3 parts:
459 * [0] 6-bit index into the array of chunks.
460 * [6] 25-bit offset into the array.
461 * [31] Bit indicating thread or context static.
466 #if G_BYTE_ORDER != G_LITTLE_ENDIAN
477 } SpecialStaticOffset;
479 #define SPECIAL_STATIC_OFFSET_TYPE_THREAD 0
480 #define SPECIAL_STATIC_OFFSET_TYPE_CONTEXT 1
482 #define MAKE_SPECIAL_STATIC_OFFSET(index, offset, type) \
483 ((SpecialStaticOffset) { .fields = { (index), (offset), (type) } }.raw)
484 #define ACCESS_SPECIAL_STATIC_OFFSET(x,f) \
485 (((SpecialStaticOffset *) &(x))->fields.f)
488 get_thread_static_data (MonoInternalThread *thread, guint32 offset)
490 g_assert (ACCESS_SPECIAL_STATIC_OFFSET (offset, type) == SPECIAL_STATIC_OFFSET_TYPE_THREAD);
492 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
493 int off = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
495 return ((char *) thread->static_data [idx]) + off;
499 get_context_static_data (MonoAppContext *ctx, guint32 offset)
501 g_assert (ACCESS_SPECIAL_STATIC_OFFSET (offset, type) == SPECIAL_STATIC_OFFSET_TYPE_CONTEXT);
503 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
504 int off = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
506 return ((char *) ctx->static_data [idx]) + off;
510 get_current_thread_ptr_for_domain (MonoDomain *domain, MonoInternalThread *thread)
512 static MonoClassField *current_thread_field = NULL;
516 if (!current_thread_field) {
517 current_thread_field = mono_class_get_field_from_name (mono_defaults.thread_class, "current_thread");
518 g_assert (current_thread_field);
521 mono_class_vtable (domain, mono_defaults.thread_class);
522 mono_domain_lock (domain);
523 offset = GPOINTER_TO_UINT (g_hash_table_lookup (domain->special_static_fields, current_thread_field));
524 mono_domain_unlock (domain);
527 return (MonoThread **)get_thread_static_data (thread, offset);
531 set_current_thread_for_domain (MonoDomain *domain, MonoInternalThread *thread, MonoThread *current)
533 MonoThread **current_thread_ptr = get_current_thread_ptr_for_domain (domain, thread);
535 g_assert (current->obj.vtable->domain == domain);
537 g_assert (!*current_thread_ptr);
538 *current_thread_ptr = current;
542 create_thread_object (MonoDomain *domain)
545 MonoVTable *vt = mono_class_vtable (domain, mono_defaults.thread_class);
546 MonoThread *t = (MonoThread*)mono_object_new_mature (vt, &error);
547 /* only possible failure mode is OOM, from which we don't expect to recover. */
548 mono_error_assert_ok (&error);
553 new_thread_with_internal (MonoDomain *domain, MonoInternalThread *internal)
557 thread = create_thread_object (domain);
559 MONO_OBJECT_SETREF (thread, internal_thread, internal);
564 static MonoInternalThread*
565 create_internal_thread (void)
568 MonoInternalThread *thread;
571 vt = mono_class_vtable (mono_get_root_domain (), mono_defaults.internal_thread_class);
572 thread = (MonoInternalThread*) mono_object_new_mature (vt, &error);
573 /* only possible failure mode is OOM, from which we don't exect to recover */
574 mono_error_assert_ok (&error);
576 thread->synch_cs = g_new0 (MonoCoopMutex, 1);
577 mono_coop_mutex_init_recursive (thread->synch_cs);
579 thread->apartment_state = ThreadApartmentState_Unknown;
580 thread->managed_id = get_next_managed_thread_id ();
581 if (mono_gc_is_moving ()) {
582 thread->thread_pinning_ref = thread;
583 MONO_GC_REGISTER_ROOT_PINNING (thread->thread_pinning_ref, MONO_ROOT_SOURCE_THREADING, "thread pinning reference");
586 thread->priority = MONO_THREAD_PRIORITY_NORMAL;
592 mono_thread_internal_set_priority (MonoInternalThread *internal, MonoThreadPriority priority)
596 g_assert (priority >= MONO_THREAD_PRIORITY_LOWEST);
597 g_assert (priority <= MONO_THREAD_PRIORITY_HIGHEST);
598 g_assert (MONO_THREAD_PRIORITY_LOWEST < MONO_THREAD_PRIORITY_HIGHEST);
603 g_assert (internal->native_handle);
605 res = SetThreadPriority (internal->native_handle, priority - 2);
607 g_error ("%s: SetThreadPriority failed, error %d", __func__, GetLastError ());
608 #else /* HOST_WIN32 */
611 struct sched_param param;
614 tid = thread_get_tid (internal);
616 res = pthread_getschedparam (tid, &policy, ¶m);
618 g_error ("%s: pthread_getschedparam failed, error: \"%s\" (%d)", __func__, g_strerror (res), res);
620 #ifdef _POSIX_PRIORITY_SCHEDULING
623 /* Necessary to get valid priority range */
625 min = sched_get_priority_min (policy);
626 max = sched_get_priority_max (policy);
628 if (max > 0 && min >= 0 && max > min) {
629 double srange, drange, sposition, dposition;
630 srange = MONO_THREAD_PRIORITY_HIGHEST - MONO_THREAD_PRIORITY_LOWEST;
632 sposition = priority - MONO_THREAD_PRIORITY_LOWEST;
633 dposition = (sposition / srange) * drange;
634 param.sched_priority = (int)(dposition + min);
641 param.sched_priority = 50;
647 param.sched_priority = 0;
650 g_error ("%s: unknown policy %d", __func__, policy);
654 res = pthread_setschedparam (tid, policy, ¶m);
657 g_warning ("%s: pthread_setschedparam failed, error: \"%s\" (%d)", __func__, g_strerror (res), res);
660 g_error ("%s: pthread_setschedparam failed, error: \"%s\" (%d)", __func__, g_strerror (res), res);
662 #endif /* HOST_WIN32 */
666 mono_alloc_static_data (gpointer **static_data_ptr, guint32 offset, gboolean threadlocal);
669 mono_thread_attach_internal (MonoThread *thread, gboolean force_attach, gboolean force_domain, gsize *stack_ptr)
671 MonoThreadInfo *info;
672 MonoInternalThread *internal;
673 MonoDomain *domain, *root_domain;
677 info = mono_thread_info_current ();
679 internal = thread->internal_thread;
680 internal->handle = mono_threads_open_thread_handle (info->handle);
682 internal->native_handle = OpenThread (THREAD_ALL_ACCESS, FALSE, GetCurrentThreadId ());
684 internal->tid = MONO_NATIVE_THREAD_ID_TO_UINT (mono_native_thread_id_get ());
685 internal->thread_info = info;
686 internal->small_id = info->small_id;
687 internal->stack_ptr = stack_ptr;
689 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Setting current_object_key to %p", __func__, mono_native_thread_id_get (), internal));
691 SET_CURRENT_OBJECT (internal);
693 domain = mono_object_domain (thread);
695 mono_thread_push_appdomain_ref (domain);
696 if (!mono_domain_set (domain, force_domain)) {
697 mono_thread_pop_appdomain_ref ();
701 mono_threads_lock ();
703 if (threads_starting_up)
704 mono_g_hash_table_remove (threads_starting_up, thread);
706 if (shutting_down && !force_attach) {
707 mono_threads_unlock ();
712 MONO_GC_REGISTER_ROOT_FIXED (threads, MONO_ROOT_SOURCE_THREADING, "threads table");
713 threads = mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_VALUE_GC, MONO_ROOT_SOURCE_THREADING, "threads table");
716 /* We don't need to duplicate thread->handle, because it is
717 * only closed when the thread object is finalized by the GC. */
718 mono_g_hash_table_insert (threads, (gpointer)(gsize)(internal->tid), internal);
720 /* We have to do this here because mono_thread_start_cb
721 * requires that root_domain_thread is set up. */
722 if (thread_static_info.offset || thread_static_info.idx > 0) {
723 /* get the current allocated size */
724 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (thread_static_info.idx, thread_static_info.offset, 0);
725 mono_alloc_static_data (&internal->static_data, offset, TRUE);
728 mono_threads_unlock ();
730 root_domain = mono_get_root_domain ();
732 g_assert (!internal->root_domain_thread);
733 if (domain != root_domain)
734 MONO_OBJECT_SETREF (internal, root_domain_thread, new_thread_with_internal (root_domain, internal));
736 MONO_OBJECT_SETREF (internal, root_domain_thread, thread);
738 if (domain != root_domain)
739 set_current_thread_for_domain (root_domain, internal, internal->root_domain_thread);
741 set_current_thread_for_domain (domain, internal, thread);
743 THREAD_DEBUG (g_message ("%s: Attached thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, internal->tid, internal->handle));
751 MonoObject *start_delegate;
752 MonoObject *start_delegate_arg;
753 MonoThreadStart start_func;
754 gpointer start_func_arg;
756 MonoCoopSem registered;
759 static guint32 WINAPI start_wrapper_internal(StartInfo *start_info, gsize *stack_ptr)
762 MonoThreadStart start_func;
763 void *start_func_arg;
766 * We don't create a local to hold start_info->thread, so hopefully it won't get pinned during a
770 MonoInternalThread *internal;
771 MonoObject *start_delegate;
772 MonoObject *start_delegate_arg;
775 thread = start_info->thread;
776 internal = thread->internal_thread;
777 domain = mono_object_domain (start_info->thread);
779 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper", __func__, mono_native_thread_id_get ()));
781 if (!mono_thread_attach_internal (thread, FALSE, FALSE, stack_ptr)) {
782 start_info->failed = TRUE;
784 mono_coop_sem_post (&start_info->registered);
786 if (InterlockedDecrement (&start_info->ref) == 0) {
787 mono_coop_sem_destroy (&start_info->registered);
794 mono_thread_internal_set_priority (internal, internal->priority);
798 start_delegate = start_info->start_delegate;
799 start_delegate_arg = start_info->start_delegate_arg;
800 start_func = start_info->start_func;
801 start_func_arg = start_info->start_func_arg;
803 /* This MUST be called before any managed code can be
804 * executed, as it calls the callback function that (for the
805 * jit) sets the lmf marker.
808 if (mono_thread_start_cb)
809 mono_thread_start_cb (tid, stack_ptr, start_func);
811 /* On 2.0 profile (and higher), set explicitly since state might have been
813 if (internal->apartment_state == ThreadApartmentState_Unknown)
814 internal->apartment_state = ThreadApartmentState_MTA;
816 mono_thread_init_apartment_state ();
818 /* Let the thread that called Start() know we're ready */
819 mono_coop_sem_post (&start_info->registered);
821 if (InterlockedDecrement (&start_info->ref) == 0) {
822 mono_coop_sem_destroy (&start_info->registered);
826 /* start_info is not valid anymore */
830 * Call this after calling start_notify, since the profiler callback might want
831 * to lock the thread, and the lock is held by thread_start () which waits for
834 mono_profiler_thread_start (tid);
836 /* if the name was set before starting, we didn't invoke the profiler callback */
837 if (internal->name) {
838 char *tname = g_utf16_to_utf8 (internal->name, internal->name_len, NULL, NULL, NULL);
839 mono_profiler_thread_name (internal->tid, tname);
840 mono_native_thread_set_name (MONO_UINT_TO_NATIVE_THREAD_ID (internal->tid), tname);
844 /* start_func is set only for unmanaged start functions */
846 start_func (start_func_arg);
850 g_assert (start_delegate != NULL);
852 /* we may want to handle the exception here. See comment below on unhandled exceptions */
853 args [0] = (gpointer) start_delegate_arg;
854 mono_runtime_delegate_invoke_checked (start_delegate, args, &error);
856 if (!mono_error_ok (&error)) {
857 MonoException *ex = mono_error_convert_to_exception (&error);
859 g_assert (ex != NULL);
860 MonoClass *klass = mono_object_get_class (&ex->object);
861 if ((mono_runtime_unhandled_exception_policy_get () != MONO_UNHANDLED_POLICY_LEGACY) &&
862 !is_threadabort_exception (klass)) {
863 mono_unhandled_exception (&ex->object);
864 mono_invoke_unhandled_exception_hook (&ex->object);
865 g_assert_not_reached ();
868 mono_error_cleanup (&error);
872 /* If the thread calls ExitThread at all, this remaining code
873 * will not be executed, but the main thread will eventually
874 * call thread_cleanup() on this thread's behalf.
877 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper terminating", __func__, mono_native_thread_id_get ()));
879 /* Do any cleanup needed for apartment state. This
880 * cannot be done in thread_cleanup since thread_cleanup could be
881 * called for a thread other than the current thread.
882 * mono_thread_cleanup_apartment_state cleans up apartment
883 * for the current thead */
884 mono_thread_cleanup_apartment_state ();
886 mono_thread_detach_internal (internal);
893 static gsize WINAPI start_wrapper(void *data)
895 volatile gsize dummy;
897 return start_wrapper_internal ((StartInfo*) data, (gsize*) &dummy);
903 * Common thread creation code.
904 * LOCKING: Acquires the threads lock.
907 create_thread (MonoThread *thread, MonoInternalThread *internal, MonoObject *start_delegate, MonoThreadStart start_func, gpointer start_func_arg,
908 gboolean threadpool_thread, guint32 stack_size, MonoError *error)
910 StartInfo *start_info = NULL;
911 MonoThreadHandle *thread_handle;
912 MonoNativeThreadId tid;
914 gsize stack_set_size;
917 g_assert (!start_func && !start_func_arg);
919 g_assert (!start_delegate);
922 * Join joinable threads to prevent running out of threads since the finalizer
923 * thread might be blocked/backlogged.
925 mono_threads_join_threads ();
927 mono_error_init (error);
929 mono_threads_lock ();
931 mono_threads_unlock ();
934 if (threads_starting_up == NULL) {
935 MONO_GC_REGISTER_ROOT_FIXED (threads_starting_up, MONO_ROOT_SOURCE_THREADING, "starting threads table");
936 threads_starting_up = mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_KEY_VALUE_GC, MONO_ROOT_SOURCE_THREADING, "starting threads table");
938 mono_g_hash_table_insert (threads_starting_up, thread, thread);
939 mono_threads_unlock ();
941 internal->threadpool_thread = threadpool_thread;
942 if (threadpool_thread)
943 mono_thread_set_state (internal, ThreadState_Background);
945 start_info = g_new0 (StartInfo, 1);
947 start_info->thread = thread;
948 start_info->start_delegate = start_delegate;
949 start_info->start_delegate_arg = thread->start_obj;
950 start_info->start_func = start_func;
951 start_info->start_func_arg = start_func_arg;
952 start_info->failed = FALSE;
953 mono_coop_sem_init (&start_info->registered, 0);
956 stack_set_size = default_stacksize_for_thread (internal);
960 thread_handle = mono_threads_create_thread (start_wrapper, start_info, &stack_set_size, &tid);
962 if (thread_handle == NULL) {
963 /* The thread couldn't be created, so set an exception */
964 mono_threads_lock ();
965 mono_g_hash_table_remove (threads_starting_up, thread);
966 mono_threads_unlock ();
967 mono_error_set_execution_engine (error, "Couldn't create thread. Error 0x%x", GetLastError());
968 /* ref is not going to be decremented in start_wrapper_internal */
969 InterlockedDecrement (&start_info->ref);
974 internal->stack_size = (int) stack_set_size;
976 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Launching thread %p (%"G_GSIZE_FORMAT")", __func__, mono_native_thread_id_get (), internal, (gsize)internal->tid));
979 * Wait for the thread to set up its TLS data etc, so
980 * theres no potential race condition if someone tries
981 * to look up the data believing the thread has
985 mono_coop_sem_wait (&start_info->registered, MONO_SEM_FLAGS_NONE);
987 mono_threads_close_thread_handle (thread_handle);
989 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));
991 ret = !start_info->failed;
994 if (InterlockedDecrement (&start_info->ref) == 0) {
995 mono_coop_sem_destroy (&start_info->registered);
1002 void mono_thread_new_init (intptr_t tid, gpointer stack_start, gpointer func)
1004 if (mono_thread_start_cb) {
1005 mono_thread_start_cb (tid, stack_start, func);
1009 void mono_threads_set_default_stacksize (guint32 stacksize)
1011 default_stacksize = stacksize;
1014 guint32 mono_threads_get_default_stacksize (void)
1016 return default_stacksize;
1020 * mono_thread_create_internal:
1022 * ARG should not be a GC reference.
1025 mono_thread_create_internal (MonoDomain *domain, gpointer func, gpointer arg, gboolean threadpool_thread, guint32 stack_size, MonoError *error)
1028 MonoInternalThread *internal;
1031 mono_error_init (error);
1033 thread = create_thread_object (domain);
1035 internal = create_internal_thread ();
1037 MONO_OBJECT_SETREF (thread, internal_thread, internal);
1039 LOCK_THREAD (internal);
1041 res = create_thread (thread, internal, NULL, (MonoThreadStart) func, arg, threadpool_thread, stack_size, error);
1042 return_val_if_nok (error, NULL);
1044 UNLOCK_THREAD (internal);
1050 mono_thread_create (MonoDomain *domain, gpointer func, gpointer arg)
1053 if (!mono_thread_create_checked (domain, func, arg, &error))
1054 mono_error_cleanup (&error);
1058 mono_thread_create_checked (MonoDomain *domain, gpointer func, gpointer arg, MonoError *error)
1060 return (NULL != mono_thread_create_internal (domain, func, arg, FALSE, 0, error));
1064 mono_thread_attach (MonoDomain *domain)
1066 MonoThread *thread = mono_thread_attach_full (domain, FALSE);
1072 mono_thread_attach_full (MonoDomain *domain, gboolean force_attach)
1074 MonoInternalThread *internal;
1076 MonoNativeThreadId tid;
1079 if (mono_thread_internal_current_is_attached ()) {
1080 if (domain != mono_domain_get ())
1081 mono_domain_set (domain, TRUE);
1082 /* Already attached */
1083 return mono_thread_current ();
1086 if (!mono_gc_register_thread (&domain)) {
1087 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 ());
1090 tid=mono_native_thread_id_get ();
1092 internal = create_internal_thread ();
1094 thread = new_thread_with_internal (domain, internal);
1096 if (!mono_thread_attach_internal (thread, force_attach, TRUE, &stack_ptr)) {
1097 /* Mono is shutting down, so just wait for the end */
1099 mono_thread_info_sleep (10000, NULL);
1102 THREAD_DEBUG (g_message ("%s: Attached thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, internal->handle));
1104 if (mono_thread_attach_cb) {
1108 mono_thread_info_get_stack_bounds (&staddr, &stsize);
1111 mono_thread_attach_cb (MONO_NATIVE_THREAD_ID_TO_UINT (tid), &stack_ptr);
1113 mono_thread_attach_cb (MONO_NATIVE_THREAD_ID_TO_UINT (tid), staddr + stsize);
1116 /* Can happen when we attach the profiler helper thread in order to heapshot. */
1117 if (!mono_thread_info_current ()->tools_thread)
1118 // FIXME: Need a separate callback
1119 mono_profiler_thread_start (MONO_NATIVE_THREAD_ID_TO_UINT (tid));
1125 mono_thread_detach_internal (MonoInternalThread *thread)
1127 g_return_if_fail (thread != NULL);
1129 THREAD_DEBUG (g_message ("%s: mono_thread_detach for %p (%"G_GSIZE_FORMAT")", __func__, thread, (gsize)thread->tid));
1132 mono_w32mutex_abandon ();
1135 thread_cleanup (thread);
1137 SET_CURRENT_OBJECT (NULL);
1138 mono_domain_unset ();
1140 /* Don't need to close the handle to this thread, even though we took a
1141 * reference in mono_thread_attach (), because the GC will do it
1142 * when the Thread object is finalised.
1147 mono_thread_detach (MonoThread *thread)
1150 mono_thread_detach_internal (thread->internal_thread);
1154 * mono_thread_detach_if_exiting:
1156 * Detach the current thread from the runtime if it is exiting, i.e. it is running pthread dtors.
1157 * This should be used at the end of embedding code which calls into managed code, and which
1158 * can be called from pthread dtors, like dealloc: implementations in objective-c.
1161 mono_thread_detach_if_exiting (void)
1163 if (mono_thread_info_is_exiting ()) {
1164 MonoInternalThread *thread;
1166 thread = mono_thread_internal_current ();
1168 mono_thread_detach_internal (thread);
1169 mono_thread_info_detach ();
1177 mono_thread_internal_current_is_attached (void)
1179 MonoInternalThread *internal;
1181 internal = GET_CURRENT_OBJECT ();
1189 mono_thread_exit (void)
1191 MonoInternalThread *thread = mono_thread_internal_current ();
1193 THREAD_DEBUG (g_message ("%s: mono_thread_exit for %p (%"G_GSIZE_FORMAT")", __func__, thread, (gsize)thread->tid));
1195 mono_thread_detach_internal (thread);
1197 /* we could add a callback here for embedders to use. */
1198 if (mono_thread_get_main () && (thread == mono_thread_get_main ()->internal_thread))
1199 exit (mono_environment_exitcode_get ());
1201 mono_thread_info_exit (0);
1205 ves_icall_System_Threading_Thread_ConstructInternalThread (MonoThread *this_obj)
1207 MonoInternalThread *internal;
1209 internal = create_internal_thread ();
1211 internal->state = ThreadState_Unstarted;
1213 InterlockedCompareExchangePointer ((volatile gpointer *)&this_obj->internal_thread, internal, NULL);
1217 ves_icall_System_Threading_Thread_Thread_internal (MonoThread *this_obj,
1221 MonoInternalThread *internal;
1224 THREAD_DEBUG (g_message("%s: Trying to start a new thread: this (%p) start (%p)", __func__, this_obj, start));
1226 if (!this_obj->internal_thread)
1227 ves_icall_System_Threading_Thread_ConstructInternalThread (this_obj);
1228 internal = this_obj->internal_thread;
1230 LOCK_THREAD (internal);
1232 if ((internal->state & ThreadState_Unstarted) == 0) {
1233 UNLOCK_THREAD (internal);
1234 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has already been started."));
1238 if ((internal->state & ThreadState_Aborted) != 0) {
1239 UNLOCK_THREAD (internal);
1243 res = create_thread (this_obj, internal, start, NULL, NULL, FALSE, 0, &error);
1245 mono_error_cleanup (&error);
1246 UNLOCK_THREAD (internal);
1250 internal->state &= ~ThreadState_Unstarted;
1252 THREAD_DEBUG (g_message ("%s: Started thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread));
1254 UNLOCK_THREAD (internal);
1255 return internal->handle;
1259 * This is called from the finalizer of the internal thread object.
1262 ves_icall_System_Threading_InternalThread_Thread_free_internal (MonoInternalThread *this_obj)
1264 THREAD_DEBUG (g_message ("%s: Closing thread %p, handle %p", __func__, this, this_obj->handle));
1267 * Since threads keep a reference to their thread object while running, by the time this function is called,
1268 * the thread has already exited/detached, i.e. thread_cleanup () has ran. The exception is during shutdown,
1269 * when thread_cleanup () can be called after this.
1271 if (this_obj->handle) {
1272 mono_threads_close_thread_handle (this_obj->handle);
1273 this_obj->handle = NULL;
1277 CloseHandle (this_obj->native_handle);
1280 if (this_obj->synch_cs) {
1281 MonoCoopMutex *synch_cs = this_obj->synch_cs;
1282 this_obj->synch_cs = NULL;
1283 mono_coop_mutex_destroy (synch_cs);
1287 if (this_obj->name) {
1288 void *name = this_obj->name;
1289 this_obj->name = NULL;
1295 ves_icall_System_Threading_Thread_Sleep_internal(gint32 ms)
1298 MonoInternalThread *thread = mono_thread_internal_current ();
1300 THREAD_DEBUG (g_message ("%s: Sleeping for %d ms", __func__, ms));
1302 if (mono_thread_current_check_pending_interrupt ())
1306 gboolean alerted = FALSE;
1308 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1310 res = mono_thread_info_sleep (ms, &alerted);
1312 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1315 MonoException* exc = mono_thread_execute_interruption ();
1317 mono_raise_exception (exc);
1329 void ves_icall_System_Threading_Thread_SpinWait_nop (void)
1334 ves_icall_System_Threading_Thread_GetDomainID (void)
1336 return mono_domain_get()->domain_id;
1340 ves_icall_System_Threading_Thread_Yield (void)
1342 return mono_thread_info_yield ();
1346 * mono_thread_get_name:
1348 * Return the name of the thread. NAME_LEN is set to the length of the name.
1349 * Return NULL if the thread has no name. The returned memory is owned by the
1353 mono_thread_get_name (MonoInternalThread *this_obj, guint32 *name_len)
1357 LOCK_THREAD (this_obj);
1359 if (!this_obj->name) {
1363 *name_len = this_obj->name_len;
1364 res = g_new (gunichar2, this_obj->name_len);
1365 memcpy (res, this_obj->name, sizeof (gunichar2) * this_obj->name_len);
1368 UNLOCK_THREAD (this_obj);
1374 * mono_thread_get_name_utf8:
1376 * Return the name of the thread in UTF-8.
1377 * Return NULL if the thread has no name.
1378 * The returned memory is owned by the caller.
1381 mono_thread_get_name_utf8 (MonoThread *thread)
1386 MonoInternalThread *internal = thread->internal_thread;
1387 if (internal == NULL)
1390 LOCK_THREAD (internal);
1392 char *tname = g_utf16_to_utf8 (internal->name, internal->name_len, NULL, NULL, NULL);
1394 UNLOCK_THREAD (internal);
1400 * mono_thread_get_managed_id:
1402 * Return the Thread.ManagedThreadId value of `thread`.
1403 * Returns -1 if `thread` is NULL.
1406 mono_thread_get_managed_id (MonoThread *thread)
1411 MonoInternalThread *internal = thread->internal_thread;
1412 if (internal == NULL)
1415 int32_t id = internal->managed_id;
1421 ves_icall_System_Threading_Thread_GetName_internal (MonoInternalThread *this_obj)
1426 mono_error_init (&error);
1428 LOCK_THREAD (this_obj);
1430 if (!this_obj->name)
1433 str = mono_string_new_utf16_checked (mono_domain_get (), this_obj->name, this_obj->name_len, &error);
1435 UNLOCK_THREAD (this_obj);
1437 if (mono_error_set_pending_exception (&error))
1444 mono_thread_set_name_internal (MonoInternalThread *this_obj, MonoString *name, gboolean permanent, MonoError *error)
1446 LOCK_THREAD (this_obj);
1448 mono_error_init (error);
1450 if ((this_obj->flags & MONO_THREAD_FLAG_NAME_SET)) {
1451 UNLOCK_THREAD (this_obj);
1453 mono_error_set_invalid_operation (error, "Thread.Name can only be set once.");
1456 if (this_obj->name) {
1457 g_free (this_obj->name);
1458 this_obj->name_len = 0;
1461 this_obj->name = g_new (gunichar2, mono_string_length (name));
1462 memcpy (this_obj->name, mono_string_chars (name), mono_string_length (name) * 2);
1463 this_obj->name_len = mono_string_length (name);
1466 this_obj->flags |= MONO_THREAD_FLAG_NAME_SET;
1469 this_obj->name = NULL;
1472 UNLOCK_THREAD (this_obj);
1474 if (this_obj->name && this_obj->tid) {
1475 char *tname = mono_string_to_utf8_checked (name, error);
1476 return_if_nok (error);
1477 mono_profiler_thread_name (this_obj->tid, tname);
1478 mono_native_thread_set_name (thread_get_tid (this_obj), tname);
1484 ves_icall_System_Threading_Thread_SetName_internal (MonoInternalThread *this_obj, MonoString *name)
1487 mono_thread_set_name_internal (this_obj, name, TRUE, &error);
1488 mono_error_set_pending_exception (&error);
1492 * ves_icall_System_Threading_Thread_GetPriority_internal:
1493 * @param this_obj: The MonoInternalThread on which to operate.
1495 * Gets the priority of the given thread.
1496 * @return: The priority of the given thread.
1499 ves_icall_System_Threading_Thread_GetPriority (MonoThread *this_obj)
1502 MonoInternalThread *internal = this_obj->internal_thread;
1504 LOCK_THREAD (internal);
1505 priority = internal->priority;
1506 UNLOCK_THREAD (internal);
1512 * ves_icall_System_Threading_Thread_SetPriority_internal:
1513 * @param this_obj: The MonoInternalThread on which to operate.
1514 * @param priority: The priority to set.
1516 * Sets the priority of the given thread.
1519 ves_icall_System_Threading_Thread_SetPriority (MonoThread *this_obj, int priority)
1521 MonoInternalThread *internal = this_obj->internal_thread;
1523 LOCK_THREAD (internal);
1524 internal->priority = priority;
1525 if (internal->thread_info != NULL)
1526 mono_thread_internal_set_priority (internal, priority);
1527 UNLOCK_THREAD (internal);
1530 /* If the array is already in the requested domain, we just return it,
1531 otherwise we return a copy in that domain. */
1533 byte_array_to_domain (MonoArray *arr, MonoDomain *domain, MonoError *error)
1537 mono_error_init (error);
1541 if (mono_object_domain (arr) == domain)
1544 copy = mono_array_new_checked (domain, mono_defaults.byte_class, arr->max_length, error);
1545 memmove (mono_array_addr (copy, guint8, 0), mono_array_addr (arr, guint8, 0), arr->max_length);
1550 ves_icall_System_Threading_Thread_ByteArrayToRootDomain (MonoArray *arr)
1553 MonoArray *result = byte_array_to_domain (arr, mono_get_root_domain (), &error);
1554 mono_error_set_pending_exception (&error);
1559 ves_icall_System_Threading_Thread_ByteArrayToCurrentDomain (MonoArray *arr)
1562 MonoArray *result = byte_array_to_domain (arr, mono_domain_get (), &error);
1563 mono_error_set_pending_exception (&error);
1568 mono_thread_current (void)
1570 MonoDomain *domain = mono_domain_get ();
1571 MonoInternalThread *internal = mono_thread_internal_current ();
1572 MonoThread **current_thread_ptr;
1574 g_assert (internal);
1575 current_thread_ptr = get_current_thread_ptr_for_domain (domain, internal);
1577 if (!*current_thread_ptr) {
1578 g_assert (domain != mono_get_root_domain ());
1579 *current_thread_ptr = new_thread_with_internal (domain, internal);
1581 return *current_thread_ptr;
1584 /* Return the thread object belonging to INTERNAL in the current domain */
1586 mono_thread_current_for_thread (MonoInternalThread *internal)
1588 MonoDomain *domain = mono_domain_get ();
1589 MonoThread **current_thread_ptr;
1591 g_assert (internal);
1592 current_thread_ptr = get_current_thread_ptr_for_domain (domain, internal);
1594 if (!*current_thread_ptr) {
1595 g_assert (domain != mono_get_root_domain ());
1596 *current_thread_ptr = new_thread_with_internal (domain, internal);
1598 return *current_thread_ptr;
1602 mono_thread_internal_current (void)
1604 MonoInternalThread *res = GET_CURRENT_OBJECT ();
1605 THREAD_DEBUG (g_message ("%s: returning %p", __func__, res));
1610 ves_icall_System_Threading_Thread_Join_internal(MonoThread *this_obj, int ms)
1612 MonoInternalThread *thread = this_obj->internal_thread;
1613 MonoThreadHandle *handle = thread->handle;
1614 MonoInternalThread *cur_thread = mono_thread_internal_current ();
1617 if (mono_thread_current_check_pending_interrupt ())
1620 LOCK_THREAD (thread);
1622 if ((thread->state & ThreadState_Unstarted) != 0) {
1623 UNLOCK_THREAD (thread);
1625 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started."));
1629 UNLOCK_THREAD (thread);
1634 THREAD_DEBUG (g_message ("%s: joining thread handle %p, %d ms", __func__, handle, ms));
1636 mono_thread_set_state (cur_thread, ThreadState_WaitSleepJoin);
1639 ret=mono_thread_info_wait_one_handle (handle, ms, TRUE);
1642 mono_thread_clr_state (cur_thread, ThreadState_WaitSleepJoin);
1644 if(ret==MONO_THREAD_INFO_WAIT_RET_SUCCESS_0) {
1645 THREAD_DEBUG (g_message ("%s: join successful", __func__));
1650 THREAD_DEBUG (g_message ("%s: join failed", __func__));
1655 #define MANAGED_WAIT_FAILED 0x7fffffff
1658 map_native_wait_result_to_managed (gint32 val)
1660 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1661 return val == WAIT_FAILED ? MANAGED_WAIT_FAILED : val;
1665 mono_wait_uninterrupted (MonoInternalThread *thread, guint32 numhandles, gpointer *handles, gboolean waitall, gint32 ms, MonoError *error)
1673 mono_error_init (error);
1675 start = (ms == -1) ? 0 : mono_100ns_ticks ();
1678 if (numhandles != 1)
1679 ret = WaitForMultipleObjectsEx (numhandles, handles, waitall, wait, TRUE);
1681 ret = WaitForSingleObjectEx (handles [0], ms, TRUE);
1684 if (ret != WAIT_IO_COMPLETION)
1687 exc = mono_thread_execute_interruption ();
1689 mono_error_set_exception_instance (error, exc);
1696 /* Re-calculate ms according to the time passed */
1697 diff_ms = (gint32)((mono_100ns_ticks () - start) / 10000);
1698 if (diff_ms >= ms) {
1702 wait = ms - diff_ms;
1708 gint32 ves_icall_System_Threading_WaitHandle_WaitAll_internal(MonoArray *mono_handles, gint32 ms)
1715 MonoObject *waitHandle;
1716 MonoInternalThread *thread = mono_thread_internal_current ();
1718 /* Do this WaitSleepJoin check before creating objects */
1719 if (mono_thread_current_check_pending_interrupt ())
1720 return map_native_wait_result_to_managed (WAIT_FAILED);
1722 /* We fail in managed if the array has more than 64 elements */
1723 numhandles = (guint32)mono_array_length(mono_handles);
1724 handles = g_new0(HANDLE, numhandles);
1726 for(i = 0; i < numhandles; i++) {
1727 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
1728 handles [i] = mono_wait_handle_get_handle ((MonoWaitHandle *) waitHandle);
1735 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1737 ret = mono_wait_uninterrupted (thread, numhandles, handles, TRUE, ms, &error);
1739 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1743 mono_error_set_pending_exception (&error);
1745 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1746 return map_native_wait_result_to_managed (ret);
1749 gint32 ves_icall_System_Threading_WaitHandle_WaitAny_internal(MonoArray *mono_handles, gint32 ms)
1752 HANDLE handles [MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
1753 uintptr_t numhandles;
1756 MonoObject *waitHandle;
1757 MonoInternalThread *thread = mono_thread_internal_current ();
1759 /* Do this WaitSleepJoin check before creating objects */
1760 if (mono_thread_current_check_pending_interrupt ())
1761 return map_native_wait_result_to_managed (WAIT_FAILED);
1763 numhandles = mono_array_length(mono_handles);
1764 if (numhandles > MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS)
1765 return map_native_wait_result_to_managed (WAIT_FAILED);
1767 for(i = 0; i < numhandles; i++) {
1768 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
1769 handles [i] = mono_wait_handle_get_handle ((MonoWaitHandle *) waitHandle);
1776 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1778 ret = mono_wait_uninterrupted (thread, numhandles, handles, FALSE, ms, &error);
1780 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1782 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") returning %d", __func__, mono_native_thread_id_get (), ret));
1784 mono_error_set_pending_exception (&error);
1786 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1787 return map_native_wait_result_to_managed (ret);
1790 gint32 ves_icall_System_Threading_WaitHandle_WaitOne_internal(HANDLE handle, gint32 ms)
1794 MonoInternalThread *thread = mono_thread_internal_current ();
1796 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") waiting for %p, %d ms", __func__, mono_native_thread_id_get (), handle, ms));
1802 if (mono_thread_current_check_pending_interrupt ())
1803 return map_native_wait_result_to_managed (WAIT_FAILED);
1805 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1807 ret = mono_wait_uninterrupted (thread, 1, &handle, FALSE, ms, &error);
1809 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1811 mono_error_set_pending_exception (&error);
1812 return map_native_wait_result_to_managed (ret);
1816 ves_icall_System_Threading_WaitHandle_SignalAndWait_Internal (HANDLE toSignal, HANDLE toWait, gint32 ms)
1819 MonoInternalThread *thread = mono_thread_internal_current ();
1824 if (mono_thread_current_check_pending_interrupt ())
1825 return map_native_wait_result_to_managed (WAIT_FAILED);
1827 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1830 ret = SignalObjectAndWait (toSignal, toWait, ms, TRUE);
1833 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1835 return map_native_wait_result_to_managed (ret);
1838 gint32 ves_icall_System_Threading_Interlocked_Increment_Int (gint32 *location)
1840 return InterlockedIncrement (location);
1843 gint64 ves_icall_System_Threading_Interlocked_Increment_Long (gint64 *location)
1845 #if SIZEOF_VOID_P == 4
1846 if (G_UNLIKELY ((size_t)location & 0x7)) {
1848 mono_interlocked_lock ();
1851 mono_interlocked_unlock ();
1855 return InterlockedIncrement64 (location);
1858 gint32 ves_icall_System_Threading_Interlocked_Decrement_Int (gint32 *location)
1860 return InterlockedDecrement(location);
1863 gint64 ves_icall_System_Threading_Interlocked_Decrement_Long (gint64 * location)
1865 #if SIZEOF_VOID_P == 4
1866 if (G_UNLIKELY ((size_t)location & 0x7)) {
1868 mono_interlocked_lock ();
1871 mono_interlocked_unlock ();
1875 return InterlockedDecrement64 (location);
1878 gint32 ves_icall_System_Threading_Interlocked_Exchange_Int (gint32 *location, gint32 value)
1880 return InterlockedExchange(location, value);
1883 MonoObject * ves_icall_System_Threading_Interlocked_Exchange_Object (MonoObject **location, MonoObject *value)
1886 res = (MonoObject *) InterlockedExchangePointer((gpointer *) location, value);
1887 mono_gc_wbarrier_generic_nostore (location);
1891 gpointer ves_icall_System_Threading_Interlocked_Exchange_IntPtr (gpointer *location, gpointer value)
1893 return InterlockedExchangePointer(location, value);
1896 gfloat ves_icall_System_Threading_Interlocked_Exchange_Single (gfloat *location, gfloat value)
1898 IntFloatUnion val, ret;
1901 ret.ival = InterlockedExchange((gint32 *) location, val.ival);
1907 ves_icall_System_Threading_Interlocked_Exchange_Long (gint64 *location, gint64 value)
1909 #if SIZEOF_VOID_P == 4
1910 if (G_UNLIKELY ((size_t)location & 0x7)) {
1912 mono_interlocked_lock ();
1915 mono_interlocked_unlock ();
1919 return InterlockedExchange64 (location, value);
1923 ves_icall_System_Threading_Interlocked_Exchange_Double (gdouble *location, gdouble value)
1925 LongDoubleUnion val, ret;
1928 ret.ival = (gint64)InterlockedExchange64((gint64 *) location, val.ival);
1933 gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int(gint32 *location, gint32 value, gint32 comparand)
1935 return InterlockedCompareExchange(location, value, comparand);
1938 gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int_Success(gint32 *location, gint32 value, gint32 comparand, MonoBoolean *success)
1940 gint32 r = InterlockedCompareExchange(location, value, comparand);
1941 *success = r == comparand;
1945 MonoObject * ves_icall_System_Threading_Interlocked_CompareExchange_Object (MonoObject **location, MonoObject *value, MonoObject *comparand)
1948 res = (MonoObject *) InterlockedCompareExchangePointer((gpointer *) location, value, comparand);
1949 mono_gc_wbarrier_generic_nostore (location);
1953 gpointer ves_icall_System_Threading_Interlocked_CompareExchange_IntPtr(gpointer *location, gpointer value, gpointer comparand)
1955 return InterlockedCompareExchangePointer(location, value, comparand);
1958 gfloat ves_icall_System_Threading_Interlocked_CompareExchange_Single (gfloat *location, gfloat value, gfloat comparand)
1960 IntFloatUnion val, ret, cmp;
1963 cmp.fval = comparand;
1964 ret.ival = InterlockedCompareExchange((gint32 *) location, val.ival, cmp.ival);
1970 ves_icall_System_Threading_Interlocked_CompareExchange_Double (gdouble *location, gdouble value, gdouble comparand)
1972 #if SIZEOF_VOID_P == 8
1973 LongDoubleUnion val, comp, ret;
1976 comp.fval = comparand;
1977 ret.ival = (gint64)InterlockedCompareExchangePointer((gpointer *) location, (gpointer)val.ival, (gpointer)comp.ival);
1983 mono_interlocked_lock ();
1985 if (old == comparand)
1987 mono_interlocked_unlock ();
1994 ves_icall_System_Threading_Interlocked_CompareExchange_Long (gint64 *location, gint64 value, gint64 comparand)
1996 #if SIZEOF_VOID_P == 4
1997 if (G_UNLIKELY ((size_t)location & 0x7)) {
1999 mono_interlocked_lock ();
2001 if (old == comparand)
2003 mono_interlocked_unlock ();
2007 return InterlockedCompareExchange64 (location, value, comparand);
2011 ves_icall_System_Threading_Interlocked_CompareExchange_T (MonoObject **location, MonoObject *value, MonoObject *comparand)
2014 res = (MonoObject *)InterlockedCompareExchangePointer ((volatile gpointer *)location, value, comparand);
2015 mono_gc_wbarrier_generic_nostore (location);
2020 ves_icall_System_Threading_Interlocked_Exchange_T (MonoObject **location, MonoObject *value)
2023 MONO_CHECK_NULL (location, NULL);
2024 res = (MonoObject *)InterlockedExchangePointer ((volatile gpointer *)location, value);
2025 mono_gc_wbarrier_generic_nostore (location);
2030 ves_icall_System_Threading_Interlocked_Add_Int (gint32 *location, gint32 value)
2032 return InterlockedAdd (location, value);
2036 ves_icall_System_Threading_Interlocked_Add_Long (gint64 *location, gint64 value)
2038 #if SIZEOF_VOID_P == 4
2039 if (G_UNLIKELY ((size_t)location & 0x7)) {
2041 mono_interlocked_lock ();
2044 mono_interlocked_unlock ();
2048 return InterlockedAdd64 (location, value);
2052 ves_icall_System_Threading_Interlocked_Read_Long (gint64 *location)
2054 #if SIZEOF_VOID_P == 4
2055 if (G_UNLIKELY ((size_t)location & 0x7)) {
2057 mono_interlocked_lock ();
2059 mono_interlocked_unlock ();
2063 return InterlockedRead64 (location);
2067 ves_icall_System_Threading_Thread_MemoryBarrier (void)
2069 mono_memory_barrier ();
2073 ves_icall_System_Threading_Thread_ClrState (MonoInternalThread* this_obj, guint32 state)
2075 mono_thread_clr_state (this_obj, (MonoThreadState)state);
2077 if (state & ThreadState_Background) {
2078 /* If the thread changes the background mode, the main thread has to
2079 * be notified, since it has to rebuild the list of threads to
2082 mono_os_event_set (&background_change_event);
2087 ves_icall_System_Threading_Thread_SetState (MonoInternalThread* this_obj, guint32 state)
2089 mono_thread_set_state (this_obj, (MonoThreadState)state);
2091 if (state & ThreadState_Background) {
2092 /* If the thread changes the background mode, the main thread has to
2093 * be notified, since it has to rebuild the list of threads to
2096 mono_os_event_set (&background_change_event);
2101 ves_icall_System_Threading_Thread_GetState (MonoInternalThread* this_obj)
2105 LOCK_THREAD (this_obj);
2107 state = this_obj->state;
2109 UNLOCK_THREAD (this_obj);
2114 void ves_icall_System_Threading_Thread_Interrupt_internal (MonoThread *this_obj)
2116 MonoInternalThread *current;
2118 MonoInternalThread *thread = this_obj->internal_thread;
2120 LOCK_THREAD (thread);
2122 current = mono_thread_internal_current ();
2124 thread->thread_interrupt_requested = TRUE;
2125 throw_ = current != thread && (thread->state & ThreadState_WaitSleepJoin);
2127 UNLOCK_THREAD (thread);
2130 async_abort_internal (thread, FALSE);
2135 * mono_thread_current_check_pending_interrupt:
2137 * Checks if there's a interruption request and set the pending exception if so.
2139 * @returns true if a pending exception was set
2142 mono_thread_current_check_pending_interrupt (void)
2144 MonoInternalThread *thread = mono_thread_internal_current ();
2145 gboolean throw_ = FALSE;
2147 LOCK_THREAD (thread);
2149 if (thread->thread_interrupt_requested) {
2151 thread->thread_interrupt_requested = FALSE;
2154 UNLOCK_THREAD (thread);
2157 mono_set_pending_exception (mono_get_exception_thread_interrupted ());
2162 request_thread_abort (MonoInternalThread *thread, MonoObject *state)
2164 LOCK_THREAD (thread);
2166 if ((thread->state & ThreadState_AbortRequested) != 0 ||
2167 (thread->state & ThreadState_StopRequested) != 0 ||
2168 (thread->state & ThreadState_Stopped) != 0)
2170 UNLOCK_THREAD (thread);
2174 if ((thread->state & ThreadState_Unstarted) != 0) {
2175 thread->state |= ThreadState_Aborted;
2176 UNLOCK_THREAD (thread);
2180 thread->state |= ThreadState_AbortRequested;
2181 if (thread->abort_state_handle)
2182 mono_gchandle_free (thread->abort_state_handle);
2184 thread->abort_state_handle = mono_gchandle_new (state, FALSE);
2185 g_assert (thread->abort_state_handle);
2187 thread->abort_state_handle = 0;
2189 thread->abort_exc = NULL;
2191 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));
2193 /* During shutdown, we can't wait for other threads */
2195 /* Make sure the thread is awake */
2196 mono_thread_resume (thread);
2198 UNLOCK_THREAD (thread);
2203 ves_icall_System_Threading_Thread_Abort (MonoInternalThread *thread, MonoObject *state)
2205 if (!request_thread_abort (thread, state))
2208 if (thread == mono_thread_internal_current ()) {
2210 self_abort_internal (&error);
2211 mono_error_set_pending_exception (&error);
2213 async_abort_internal (thread, TRUE);
2218 * mono_thread_internal_abort:
2220 * Request thread @thread to be aborted.
2222 * @thread MUST NOT be the current thread.
2225 mono_thread_internal_abort (MonoInternalThread *thread)
2227 g_assert (thread != mono_thread_internal_current ());
2229 if (!request_thread_abort (thread, NULL))
2231 async_abort_internal (thread, TRUE);
2235 ves_icall_System_Threading_Thread_ResetAbort (MonoThread *this_obj)
2237 MonoInternalThread *thread = mono_thread_internal_current ();
2238 gboolean was_aborting;
2240 LOCK_THREAD (thread);
2241 was_aborting = thread->state & ThreadState_AbortRequested;
2242 thread->state &= ~ThreadState_AbortRequested;
2243 UNLOCK_THREAD (thread);
2245 if (!was_aborting) {
2246 const char *msg = "Unable to reset abort because no abort was requested";
2247 mono_set_pending_exception (mono_get_exception_thread_state (msg));
2250 thread->abort_exc = NULL;
2251 if (thread->abort_state_handle) {
2252 mono_gchandle_free (thread->abort_state_handle);
2253 /* This is actually not necessary - the handle
2254 only counts if the exception is set */
2255 thread->abort_state_handle = 0;
2260 mono_thread_internal_reset_abort (MonoInternalThread *thread)
2262 LOCK_THREAD (thread);
2264 thread->state &= ~ThreadState_AbortRequested;
2266 if (thread->abort_exc) {
2267 thread->abort_exc = NULL;
2268 if (thread->abort_state_handle) {
2269 mono_gchandle_free (thread->abort_state_handle);
2270 /* This is actually not necessary - the handle
2271 only counts if the exception is set */
2272 thread->abort_state_handle = 0;
2276 UNLOCK_THREAD (thread);
2280 ves_icall_System_Threading_Thread_GetAbortExceptionState (MonoThread *this_obj)
2283 MonoInternalThread *thread = this_obj->internal_thread;
2284 MonoObject *state, *deserialized = NULL;
2287 if (!thread->abort_state_handle)
2290 state = mono_gchandle_get_target (thread->abort_state_handle);
2293 domain = mono_domain_get ();
2294 if (mono_object_domain (state) == domain)
2297 deserialized = mono_object_xdomain_representation (state, domain, &error);
2299 if (!deserialized) {
2300 MonoException *invalid_op_exc = mono_get_exception_invalid_operation ("Thread.ExceptionState cannot access an ExceptionState from a different AppDomain");
2301 if (!is_ok (&error)) {
2302 MonoObject *exc = (MonoObject*)mono_error_convert_to_exception (&error);
2303 MONO_OBJECT_SETREF (invalid_op_exc, inner_ex, exc);
2305 mono_set_pending_exception (invalid_op_exc);
2309 return deserialized;
2313 mono_thread_suspend (MonoInternalThread *thread)
2315 LOCK_THREAD (thread);
2317 if ((thread->state & ThreadState_Unstarted) != 0 ||
2318 (thread->state & ThreadState_Aborted) != 0 ||
2319 (thread->state & ThreadState_Stopped) != 0)
2321 UNLOCK_THREAD (thread);
2325 if ((thread->state & ThreadState_Suspended) != 0 ||
2326 (thread->state & ThreadState_SuspendRequested) != 0 ||
2327 (thread->state & ThreadState_StopRequested) != 0)
2329 UNLOCK_THREAD (thread);
2333 thread->state |= ThreadState_SuspendRequested;
2335 if (thread == mono_thread_internal_current ()) {
2336 /* calls UNLOCK_THREAD (thread) */
2337 self_suspend_internal ();
2339 /* calls UNLOCK_THREAD (thread) */
2340 async_suspend_internal (thread, FALSE);
2347 ves_icall_System_Threading_Thread_Suspend (MonoThread *this_obj)
2349 if (!mono_thread_suspend (this_obj->internal_thread)) {
2350 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2355 /* LOCKING: LOCK_THREAD(thread) must be held */
2357 mono_thread_resume (MonoInternalThread *thread)
2359 if ((thread->state & ThreadState_SuspendRequested) != 0) {
2360 thread->state &= ~ThreadState_SuspendRequested;
2364 if ((thread->state & ThreadState_Suspended) == 0 ||
2365 (thread->state & ThreadState_Unstarted) != 0 ||
2366 (thread->state & ThreadState_Aborted) != 0 ||
2367 (thread->state & ThreadState_Stopped) != 0)
2372 UNLOCK_THREAD (thread);
2374 /* Awake the thread */
2375 if (!mono_thread_info_resume (thread_get_tid (thread)))
2378 LOCK_THREAD (thread);
2380 thread->state &= ~ThreadState_Suspended;
2386 ves_icall_System_Threading_Thread_Resume (MonoThread *thread)
2388 if (!thread->internal_thread) {
2389 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2391 LOCK_THREAD (thread->internal_thread);
2392 if (!mono_thread_resume (thread->internal_thread))
2393 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2394 UNLOCK_THREAD (thread->internal_thread);
2399 mono_threads_is_critical_method (MonoMethod *method)
2401 switch (method->wrapper_type) {
2402 case MONO_WRAPPER_RUNTIME_INVOKE:
2403 case MONO_WRAPPER_XDOMAIN_INVOKE:
2404 case MONO_WRAPPER_XDOMAIN_DISPATCH:
2411 find_wrapper (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
2416 if (mono_threads_is_critical_method (m)) {
2417 *((gboolean*)data) = TRUE;
2424 is_running_protected_wrapper (void)
2426 gboolean found = FALSE;
2427 mono_stack_walk (find_wrapper, &found);
2432 request_thread_stop (MonoInternalThread *thread)
2434 LOCK_THREAD (thread);
2436 if ((thread->state & ThreadState_StopRequested) != 0 ||
2437 (thread->state & ThreadState_Stopped) != 0)
2439 UNLOCK_THREAD (thread);
2443 /* Make sure the thread is awake */
2444 mono_thread_resume (thread);
2446 thread->state |= ThreadState_StopRequested;
2447 thread->state &= ~ThreadState_AbortRequested;
2449 UNLOCK_THREAD (thread);
2454 * mono_thread_internal_stop:
2456 * Request thread @thread to stop.
2458 * @thread MUST NOT be the current thread.
2461 mono_thread_internal_stop (MonoInternalThread *thread)
2463 g_assert (thread != mono_thread_internal_current ());
2465 if (!request_thread_stop (thread))
2468 async_abort_internal (thread, TRUE);
2471 void mono_thread_stop (MonoThread *thread)
2473 MonoInternalThread *internal = thread->internal_thread;
2475 if (!request_thread_stop (internal))
2478 if (internal == mono_thread_internal_current ()) {
2480 self_abort_internal (&error);
2482 This function is part of the embeding API and has no way to return the exception
2483 to be thrown. So what we do is keep the old behavior and raise the exception.
2485 mono_error_raise_exception (&error); /* OK to throw, see note */
2487 async_abort_internal (internal, TRUE);
2492 ves_icall_System_Threading_Thread_VolatileRead1 (void *ptr)
2494 gint8 tmp = *(volatile gint8 *)ptr;
2495 mono_memory_barrier ();
2500 ves_icall_System_Threading_Thread_VolatileRead2 (void *ptr)
2502 gint16 tmp = *(volatile gint16 *)ptr;
2503 mono_memory_barrier ();
2508 ves_icall_System_Threading_Thread_VolatileRead4 (void *ptr)
2510 gint32 tmp = *(volatile gint32 *)ptr;
2511 mono_memory_barrier ();
2516 ves_icall_System_Threading_Thread_VolatileRead8 (void *ptr)
2518 gint64 tmp = *(volatile gint64 *)ptr;
2519 mono_memory_barrier ();
2524 ves_icall_System_Threading_Thread_VolatileReadIntPtr (void *ptr)
2526 volatile void *tmp = *(volatile void **)ptr;
2527 mono_memory_barrier ();
2528 return (void *) tmp;
2532 ves_icall_System_Threading_Thread_VolatileReadObject (void *ptr)
2534 volatile MonoObject *tmp = *(volatile MonoObject **)ptr;
2535 mono_memory_barrier ();
2536 return (MonoObject *) tmp;
2540 ves_icall_System_Threading_Thread_VolatileReadDouble (void *ptr)
2542 double tmp = *(volatile double *)ptr;
2543 mono_memory_barrier ();
2548 ves_icall_System_Threading_Thread_VolatileReadFloat (void *ptr)
2550 float tmp = *(volatile float *)ptr;
2551 mono_memory_barrier ();
2556 ves_icall_System_Threading_Volatile_Read1 (void *ptr)
2558 return InterlockedRead8 ((volatile gint8 *)ptr);
2562 ves_icall_System_Threading_Volatile_Read2 (void *ptr)
2564 return InterlockedRead16 ((volatile gint16 *)ptr);
2568 ves_icall_System_Threading_Volatile_Read4 (void *ptr)
2570 return InterlockedRead ((volatile gint32 *)ptr);
2574 ves_icall_System_Threading_Volatile_Read8 (void *ptr)
2576 #if SIZEOF_VOID_P == 4
2577 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2579 mono_interlocked_lock ();
2580 val = *(gint64*)ptr;
2581 mono_interlocked_unlock ();
2585 return InterlockedRead64 ((volatile gint64 *)ptr);
2589 ves_icall_System_Threading_Volatile_ReadIntPtr (void *ptr)
2591 return InterlockedReadPointer ((volatile gpointer *)ptr);
2595 ves_icall_System_Threading_Volatile_ReadDouble (void *ptr)
2599 #if SIZEOF_VOID_P == 4
2600 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2602 mono_interlocked_lock ();
2603 val = *(double*)ptr;
2604 mono_interlocked_unlock ();
2609 u.ival = InterlockedRead64 ((volatile gint64 *)ptr);
2615 ves_icall_System_Threading_Volatile_ReadFloat (void *ptr)
2619 u.ival = InterlockedRead ((volatile gint32 *)ptr);
2625 ves_icall_System_Threading_Volatile_Read_T (void *ptr)
2627 return (MonoObject *)InterlockedReadPointer ((volatile gpointer *)ptr);
2631 ves_icall_System_Threading_Thread_VolatileWrite1 (void *ptr, gint8 value)
2633 mono_memory_barrier ();
2634 *(volatile gint8 *)ptr = value;
2638 ves_icall_System_Threading_Thread_VolatileWrite2 (void *ptr, gint16 value)
2640 mono_memory_barrier ();
2641 *(volatile gint16 *)ptr = value;
2645 ves_icall_System_Threading_Thread_VolatileWrite4 (void *ptr, gint32 value)
2647 mono_memory_barrier ();
2648 *(volatile gint32 *)ptr = value;
2652 ves_icall_System_Threading_Thread_VolatileWrite8 (void *ptr, gint64 value)
2654 mono_memory_barrier ();
2655 *(volatile gint64 *)ptr = value;
2659 ves_icall_System_Threading_Thread_VolatileWriteIntPtr (void *ptr, void *value)
2661 mono_memory_barrier ();
2662 *(volatile void **)ptr = value;
2666 ves_icall_System_Threading_Thread_VolatileWriteObject (void *ptr, MonoObject *value)
2668 mono_memory_barrier ();
2669 mono_gc_wbarrier_generic_store (ptr, value);
2673 ves_icall_System_Threading_Thread_VolatileWriteDouble (void *ptr, double value)
2675 mono_memory_barrier ();
2676 *(volatile double *)ptr = value;
2680 ves_icall_System_Threading_Thread_VolatileWriteFloat (void *ptr, float value)
2682 mono_memory_barrier ();
2683 *(volatile float *)ptr = value;
2687 ves_icall_System_Threading_Volatile_Write1 (void *ptr, gint8 value)
2689 InterlockedWrite8 ((volatile gint8 *)ptr, value);
2693 ves_icall_System_Threading_Volatile_Write2 (void *ptr, gint16 value)
2695 InterlockedWrite16 ((volatile gint16 *)ptr, value);
2699 ves_icall_System_Threading_Volatile_Write4 (void *ptr, gint32 value)
2701 InterlockedWrite ((volatile gint32 *)ptr, value);
2705 ves_icall_System_Threading_Volatile_Write8 (void *ptr, gint64 value)
2707 #if SIZEOF_VOID_P == 4
2708 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2709 mono_interlocked_lock ();
2710 *(gint64*)ptr = value;
2711 mono_interlocked_unlock ();
2716 InterlockedWrite64 ((volatile gint64 *)ptr, value);
2720 ves_icall_System_Threading_Volatile_WriteIntPtr (void *ptr, void *value)
2722 InterlockedWritePointer ((volatile gpointer *)ptr, value);
2726 ves_icall_System_Threading_Volatile_WriteDouble (void *ptr, double value)
2730 #if SIZEOF_VOID_P == 4
2731 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2732 mono_interlocked_lock ();
2733 *(double*)ptr = value;
2734 mono_interlocked_unlock ();
2741 InterlockedWrite64 ((volatile gint64 *)ptr, u.ival);
2745 ves_icall_System_Threading_Volatile_WriteFloat (void *ptr, float value)
2751 InterlockedWrite ((volatile gint32 *)ptr, u.ival);
2755 ves_icall_System_Threading_Volatile_Write_T (void *ptr, MonoObject *value)
2757 mono_gc_wbarrier_generic_store_atomic (ptr, value);
2761 free_context (void *user_data)
2763 ContextStaticData *data = user_data;
2765 mono_threads_lock ();
2768 * There is no guarantee that, by the point this reference queue callback
2769 * has been invoked, the GC handle associated with the object will fail to
2770 * resolve as one might expect. So if we don't free and remove the GC
2771 * handle here, free_context_static_data_helper () could end up resolving
2772 * a GC handle to an actually-dead context which would contain a pointer
2773 * to an already-freed static data segment, resulting in a crash when
2776 g_hash_table_remove (contexts, GUINT_TO_POINTER (data->gc_handle));
2778 mono_threads_unlock ();
2780 mono_gchandle_free (data->gc_handle);
2781 mono_free_static_data (data->static_data);
2786 ves_icall_System_Runtime_Remoting_Contexts_Context_RegisterContext (MonoAppContext *ctx)
2788 mono_threads_lock ();
2790 //g_print ("Registering context %d in domain %d\n", ctx->context_id, ctx->domain_id);
2793 contexts = g_hash_table_new (NULL, NULL);
2796 context_queue = mono_gc_reference_queue_new (free_context);
2798 gpointer gch = GUINT_TO_POINTER (mono_gchandle_new_weakref (&ctx->obj, FALSE));
2799 g_hash_table_insert (contexts, gch, gch);
2802 * We use this intermediate structure to contain a duplicate pointer to
2803 * the static data because we can't rely on being able to resolve the GC
2804 * handle in the reference queue callback.
2806 ContextStaticData *data = g_new0 (ContextStaticData, 1);
2807 data->gc_handle = GPOINTER_TO_UINT (gch);
2810 context_adjust_static_data (ctx);
2811 mono_gc_reference_queue_add (context_queue, &ctx->obj, data);
2813 mono_threads_unlock ();
2815 mono_profiler_context_loaded (ctx);
2819 ves_icall_System_Runtime_Remoting_Contexts_Context_ReleaseContext (MonoAppContext *ctx)
2822 * NOTE: Since finalizers are unreliable for the purposes of ensuring
2823 * cleanup in exceptional circumstances, we don't actually do any
2824 * cleanup work here. We instead do this via a reference queue.
2827 //g_print ("Releasing context %d in domain %d\n", ctx->context_id, ctx->domain_id);
2829 mono_profiler_context_unloaded (ctx);
2833 mono_thread_init_tls (void)
2835 MONO_FAST_TLS_INIT (tls_current_object);
2836 mono_native_tls_alloc (¤t_object_key, NULL);
2839 void mono_thread_init (MonoThreadStartCB start_cb,
2840 MonoThreadAttachCB attach_cb)
2842 mono_coop_mutex_init_recursive (&threads_mutex);
2844 mono_os_mutex_init_recursive(&interlocked_mutex);
2845 mono_os_mutex_init_recursive(&joinable_threads_mutex);
2847 mono_os_event_init (&background_change_event, TRUE, FALSE);
2849 mono_init_static_data_info (&thread_static_info);
2850 mono_init_static_data_info (&context_static_info);
2852 THREAD_DEBUG (g_message ("%s: Allocated current_object_key %d", __func__, current_object_key));
2854 mono_thread_start_cb = start_cb;
2855 mono_thread_attach_cb = attach_cb;
2858 void mono_thread_cleanup (void)
2860 #if !defined(RUN_IN_SUBTHREAD) && !defined(HOST_WIN32)
2861 /* The main thread must abandon any held mutexes (particularly
2862 * important for named mutexes as they are shared across
2863 * processes, see bug 74680.) This will happen when the
2864 * thread exits, but if it's not running in a subthread it
2865 * won't exit in time.
2867 mono_w32mutex_abandon ();
2871 /* This stuff needs more testing, it seems one of these
2872 * critical sections can be locked when mono_thread_cleanup is
2875 mono_coop_mutex_destroy (&threads_mutex);
2876 mono_os_mutex_destroy (&interlocked_mutex);
2877 mono_os_mutex_destroy (&delayed_free_table_mutex);
2878 mono_os_mutex_destroy (&small_id_mutex);
2879 mono_os_event_destroy (&background_change_event);
2882 mono_native_tls_free (current_object_key);
2886 mono_threads_install_cleanup (MonoThreadCleanupFunc func)
2888 mono_thread_cleanup_fn = func;
2892 mono_thread_set_manage_callback (MonoThread *thread, MonoThreadManageCallback func)
2894 thread->internal_thread->manage_callback = func;
2898 static void print_tids (gpointer key, gpointer value, gpointer user)
2900 /* GPOINTER_TO_UINT breaks horribly if sizeof(void *) >
2901 * sizeof(uint) and a cast to uint would overflow
2903 /* Older versions of glib don't have G_GSIZE_FORMAT, so just
2904 * print this as a pointer.
2906 g_message ("Waiting for: %p", key);
2911 MonoThreadHandle *handles[MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
2912 MonoInternalThread *threads[MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
2917 wait_for_tids (struct wait_data *wait, guint32 timeout)
2920 MonoThreadInfoWaitRet ret;
2922 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
2925 ret = mono_thread_info_wait_multiple_handle(wait->handles, wait->num, NULL, TRUE, timeout, TRUE);
2928 if(ret==MONO_THREAD_INFO_WAIT_RET_FAILED) {
2929 /* See the comment in build_wait_tids() */
2930 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
2934 for(i=0; i<wait->num; i++)
2935 mono_threads_close_thread_handle (wait->handles [i]);
2937 if (ret == MONO_THREAD_INFO_WAIT_RET_TIMEOUT)
2940 for(i=0; i<wait->num; i++) {
2941 MonoInternalThread *internal;
2943 internal = wait->threads [i];
2945 mono_threads_lock ();
2946 if (mono_g_hash_table_lookup (threads, (gpointer) internal->tid) == internal)
2947 g_error ("%s: failed to call mono_thread_detach_internal on thread %p, InternalThread: %p", __func__, internal->tid, internal);
2948 mono_threads_unlock ();
2952 static void wait_for_tids_or_state_change (struct wait_data *wait, guint32 timeout)
2955 MonoThreadInfoWaitRet ret;
2957 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
2959 /* Add the thread state change event, so it wakes
2960 * up if a thread changes to background mode. */
2963 ret = mono_thread_info_wait_multiple_handle (wait->handles, wait->num, &background_change_event, FALSE, timeout, TRUE);
2966 if(ret==MONO_THREAD_INFO_WAIT_RET_FAILED) {
2967 /* See the comment in build_wait_tids() */
2968 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
2972 for(i=0; i<wait->num; i++)
2973 mono_threads_close_thread_handle (wait->handles [i]);
2975 if (ret == MONO_THREAD_INFO_WAIT_RET_TIMEOUT)
2978 if (ret < wait->num) {
2979 MonoInternalThread *internal;
2981 internal = wait->threads [ret];
2983 mono_threads_lock ();
2984 if (mono_g_hash_table_lookup (threads, (gpointer) internal->tid) == internal)
2985 g_error ("%s: failed to call mono_thread_detach_internal on thread %p, InternalThread: %p", __func__, internal->tid, internal);
2986 mono_threads_unlock ();
2990 static void build_wait_tids (gpointer key, gpointer value, gpointer user)
2992 struct wait_data *wait=(struct wait_data *)user;
2994 if(wait->num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS - 1) {
2995 MonoInternalThread *thread=(MonoInternalThread *)value;
2997 /* Ignore background threads, we abort them later */
2998 /* Do not lock here since it is not needed and the caller holds threads_lock */
2999 if (thread->state & ThreadState_Background) {
3000 THREAD_DEBUG (g_message ("%s: ignoring background thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3001 return; /* just leave, ignore */
3004 if (mono_gc_is_finalizer_internal_thread (thread)) {
3005 THREAD_DEBUG (g_message ("%s: ignoring finalizer thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3009 if (thread == mono_thread_internal_current ()) {
3010 THREAD_DEBUG (g_message ("%s: ignoring current thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3014 if (mono_thread_get_main () && (thread == mono_thread_get_main ()->internal_thread)) {
3015 THREAD_DEBUG (g_message ("%s: ignoring main thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3019 if (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE) {
3020 THREAD_DEBUG (g_message ("%s: ignoring thread %" G_GSIZE_FORMAT "with DONT_MANAGE flag set.", __func__, (gsize)thread->tid));
3024 THREAD_DEBUG (g_message ("%s: Invoking mono_thread_manage callback on thread %p", __func__, thread));
3025 if ((thread->manage_callback == NULL) || (thread->manage_callback (thread->root_domain_thread) == TRUE)) {
3026 wait->handles[wait->num]=mono_threads_open_thread_handle (thread->handle);
3027 wait->threads[wait->num]=thread;
3030 THREAD_DEBUG (g_message ("%s: adding thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3032 THREAD_DEBUG (g_message ("%s: ignoring (because of callback) thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3037 /* Just ignore the rest, we can't do anything with
3044 remove_and_abort_threads (gpointer key, gpointer value, gpointer user)
3046 struct wait_data *wait=(struct wait_data *)user;
3047 MonoNativeThreadId self = mono_native_thread_id_get ();
3048 MonoInternalThread *thread = (MonoInternalThread *)value;
3050 if (wait->num >= MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS)
3053 /* The finalizer thread is not a background thread */
3054 if (!mono_native_thread_id_equals (thread_get_tid (thread), self)
3055 && (thread->state & ThreadState_Background) != 0
3056 && (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE) == 0
3058 wait->handles[wait->num] = mono_threads_open_thread_handle (thread->handle);
3059 wait->threads[wait->num] = thread;
3062 THREAD_DEBUG (g_print ("%s: Aborting id: %"G_GSIZE_FORMAT"\n", __func__, (gsize)thread->tid));
3063 mono_thread_internal_abort (thread);
3067 return !mono_native_thread_id_equals (thread_get_tid (thread), self)
3068 && !mono_gc_is_finalizer_internal_thread (thread);
3072 * mono_threads_set_shutting_down:
3074 * Is called by a thread that wants to shut down Mono. If the runtime is already
3075 * shutting down, the calling thread is suspended/stopped, and this function never
3079 mono_threads_set_shutting_down (void)
3081 MonoInternalThread *current_thread = mono_thread_internal_current ();
3083 mono_threads_lock ();
3085 if (shutting_down) {
3086 mono_threads_unlock ();
3088 /* Make sure we're properly suspended/stopped */
3090 LOCK_THREAD (current_thread);
3092 if ((current_thread->state & ThreadState_SuspendRequested) ||
3093 (current_thread->state & ThreadState_AbortRequested) ||
3094 (current_thread->state & ThreadState_StopRequested)) {
3095 UNLOCK_THREAD (current_thread);
3096 mono_thread_execute_interruption ();
3098 current_thread->state |= ThreadState_Stopped;
3099 UNLOCK_THREAD (current_thread);
3102 /*since we're killing the thread, detach it.*/
3103 mono_thread_detach_internal (current_thread);
3105 /* Wake up other threads potentially waiting for us */
3106 mono_thread_info_exit (0);
3108 shutting_down = TRUE;
3110 /* Not really a background state change, but this will
3111 * interrupt the main thread if it is waiting for all
3112 * the other threads.
3114 mono_os_event_set (&background_change_event);
3116 mono_threads_unlock ();
3120 void mono_thread_manage (void)
3122 struct wait_data wait_data;
3123 struct wait_data *wait = &wait_data;
3125 memset (wait, 0, sizeof (struct wait_data));
3126 /* join each thread that's still running */
3127 THREAD_DEBUG (g_message ("%s: Joining each running thread...", __func__));
3129 mono_threads_lock ();
3131 THREAD_DEBUG (g_message("%s: No threads", __func__));
3132 mono_threads_unlock ();
3135 mono_threads_unlock ();
3138 mono_threads_lock ();
3139 if (shutting_down) {
3140 /* somebody else is shutting down */
3141 mono_threads_unlock ();
3144 THREAD_DEBUG (g_message ("%s: There are %d threads to join", __func__, mono_g_hash_table_size (threads));
3145 mono_g_hash_table_foreach (threads, print_tids, NULL));
3147 mono_os_event_reset (&background_change_event);
3149 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3150 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3151 mono_g_hash_table_foreach (threads, build_wait_tids, wait);
3152 mono_threads_unlock ();
3154 /* Something to wait for */
3155 wait_for_tids_or_state_change (wait, INFINITE);
3157 THREAD_DEBUG (g_message ("%s: I have %d threads after waiting.", __func__, wait->num));
3158 } while(wait->num>0);
3160 /* Mono is shutting down, so just wait for the end */
3161 if (!mono_runtime_try_shutdown ()) {
3162 /*FIXME mono_thread_suspend probably should call mono_thread_execute_interruption when self interrupting. */
3163 mono_thread_suspend (mono_thread_internal_current ());
3164 mono_thread_execute_interruption ();
3168 * Remove everything but the finalizer thread and self.
3169 * Also abort all the background threads
3172 mono_threads_lock ();
3175 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3176 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3177 mono_g_hash_table_foreach_remove (threads, remove_and_abort_threads, wait);
3179 mono_threads_unlock ();
3181 THREAD_DEBUG (g_message ("%s: wait->num is now %d", __func__, wait->num));
3183 /* Something to wait for */
3184 wait_for_tids (wait, INFINITE);
3186 } while (wait->num > 0);
3189 * give the subthreads a chance to really quit (this is mainly needed
3190 * to get correct user and system times from getrusage/wait/time(1)).
3191 * This could be removed if we avoid pthread_detach() and use pthread_join().
3193 mono_thread_info_yield ();
3197 collect_threads_for_suspend (gpointer key, gpointer value, gpointer user_data)
3199 MonoInternalThread *thread = (MonoInternalThread*)value;
3200 struct wait_data *wait = (struct wait_data*)user_data;
3203 * We try to exclude threads early, to avoid running into the MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS
3205 * This needs no locking.
3207 if ((thread->state & ThreadState_Suspended) != 0 ||
3208 (thread->state & ThreadState_Stopped) != 0)
3211 if (wait->num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS) {
3212 wait->handles [wait->num] = mono_threads_open_thread_handle (thread->handle);
3213 wait->threads [wait->num] = thread;
3219 * mono_thread_suspend_all_other_threads:
3221 * Suspend all managed threads except the finalizer thread and this thread. It is
3222 * not possible to resume them later.
3224 void mono_thread_suspend_all_other_threads (void)
3226 struct wait_data wait_data;
3227 struct wait_data *wait = &wait_data;
3229 MonoNativeThreadId self = mono_native_thread_id_get ();
3230 guint32 eventidx = 0;
3231 gboolean starting, finished;
3233 memset (wait, 0, sizeof (struct wait_data));
3235 * The other threads could be in an arbitrary state at this point, i.e.
3236 * they could be starting up, shutting down etc. This means that there could be
3237 * threads which are not even in the threads hash table yet.
3241 * First we set a barrier which will be checked by all threads before they
3242 * are added to the threads hash table, and they will exit if the flag is set.
3243 * This ensures that no threads could be added to the hash later.
3244 * We will use shutting_down as the barrier for now.
3246 g_assert (shutting_down);
3249 * We make multiple calls to WaitForMultipleObjects since:
3250 * - we can only wait for MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS threads
3251 * - some threads could exit without becoming suspended
3256 * Make a copy of the hashtable since we can't do anything with
3257 * threads while threads_mutex is held.
3260 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3261 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3262 mono_threads_lock ();
3263 mono_g_hash_table_foreach (threads, collect_threads_for_suspend, wait);
3264 mono_threads_unlock ();
3267 /* Get the suspended events that we'll be waiting for */
3268 for (i = 0; i < wait->num; ++i) {
3269 MonoInternalThread *thread = wait->threads [i];
3271 if (mono_native_thread_id_equals (thread_get_tid (thread), self)
3272 || mono_gc_is_finalizer_internal_thread (thread)
3273 || (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE)
3275 //mono_threads_close_thread_handle (wait->handles [i]);
3276 wait->threads [i] = NULL; /* ignore this thread in next loop */
3280 LOCK_THREAD (thread);
3282 if ((thread->state & ThreadState_Suspended) != 0 ||
3283 (thread->state & ThreadState_StopRequested) != 0 ||
3284 (thread->state & ThreadState_Stopped) != 0) {
3285 UNLOCK_THREAD (thread);
3286 mono_threads_close_thread_handle (wait->handles [i]);
3287 wait->threads [i] = NULL; /* ignore this thread in next loop */
3293 /* Convert abort requests into suspend requests */
3294 if ((thread->state & ThreadState_AbortRequested) != 0)
3295 thread->state &= ~ThreadState_AbortRequested;
3297 thread->state |= ThreadState_SuspendRequested;
3299 /* Signal the thread to suspend + calls UNLOCK_THREAD (thread) */
3300 async_suspend_internal (thread, TRUE);
3302 if (eventidx <= 0) {
3304 * If there are threads which are starting up, we wait until they
3305 * are suspended when they try to register in the threads hash.
3306 * This is guaranteed to finish, since the threads which can create new
3307 * threads get suspended after a while.
3308 * FIXME: The finalizer thread can still create new threads.
3310 mono_threads_lock ();
3311 if (threads_starting_up)
3312 starting = mono_g_hash_table_size (threads_starting_up) > 0;
3315 mono_threads_unlock ();
3317 mono_thread_info_sleep (100, NULL);
3325 MonoInternalThread *thread;
3326 MonoStackFrameInfo *frames;
3327 int nframes, max_frames;
3328 int nthreads, max_threads;
3329 MonoInternalThread **threads;
3330 } ThreadDumpUserData;
3332 static gboolean thread_dump_requested;
3334 /* This needs to be async safe */
3336 collect_frame (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
3338 ThreadDumpUserData *ud = (ThreadDumpUserData *)data;
3340 if (ud->nframes < ud->max_frames) {
3341 memcpy (&ud->frames [ud->nframes], frame, sizeof (MonoStackFrameInfo));
3348 /* This needs to be async safe */
3349 static SuspendThreadResult
3350 get_thread_dump (MonoThreadInfo *info, gpointer ud)
3352 ThreadDumpUserData *user_data = (ThreadDumpUserData *)ud;
3353 MonoInternalThread *thread = user_data->thread;
3356 /* This no longer works with remote unwinding */
3357 g_string_append_printf (text, " tid=0x%p this=0x%p ", (gpointer)(gsize)thread->tid, thread);
3358 mono_thread_internal_describe (thread, text);
3359 g_string_append (text, "\n");
3362 if (thread == mono_thread_internal_current ())
3363 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (collect_frame, NULL, MONO_UNWIND_SIGNAL_SAFE, ud);
3365 mono_get_eh_callbacks ()->mono_walk_stack_with_state (collect_frame, mono_thread_info_get_suspend_state (info), MONO_UNWIND_SIGNAL_SAFE, ud);
3367 return MonoResumeThread;
3371 int nthreads, max_threads;
3372 MonoInternalThread **threads;
3373 } CollectThreadsUserData;
3376 collect_thread (gpointer key, gpointer value, gpointer user)
3378 CollectThreadsUserData *ud = (CollectThreadsUserData *)user;
3379 MonoInternalThread *thread = (MonoInternalThread *)value;
3381 if (ud->nthreads < ud->max_threads)
3382 ud->threads [ud->nthreads ++] = thread;
3386 * Collect running threads into the THREADS array.
3387 * THREADS should be an array allocated on the stack.
3390 collect_threads (MonoInternalThread **thread_array, int max_threads)
3392 CollectThreadsUserData ud;
3394 memset (&ud, 0, sizeof (ud));
3395 /* This array contains refs, but its on the stack, so its ok */
3396 ud.threads = thread_array;
3397 ud.max_threads = max_threads;
3399 mono_threads_lock ();
3400 mono_g_hash_table_foreach (threads, collect_thread, &ud);
3401 mono_threads_unlock ();
3407 dump_thread (MonoInternalThread *thread, ThreadDumpUserData *ud)
3409 GString* text = g_string_new (0);
3411 GError *error = NULL;
3414 ud->thread = thread;
3417 /* Collect frames for the thread */
3418 if (thread == mono_thread_internal_current ()) {
3419 get_thread_dump (mono_thread_info_current (), ud);
3421 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), FALSE, get_thread_dump, ud);
3425 * Do all the non async-safe work outside of get_thread_dump.
3428 name = g_utf16_to_utf8 (thread->name, thread->name_len, NULL, NULL, &error);
3430 g_string_append_printf (text, "\n\"%s\"", name);
3433 else if (thread->threadpool_thread) {
3434 g_string_append (text, "\n\"<threadpool thread>\"");
3436 g_string_append (text, "\n\"<unnamed thread>\"");
3439 for (i = 0; i < ud->nframes; ++i) {
3440 MonoStackFrameInfo *frame = &ud->frames [i];
3441 MonoMethod *method = NULL;
3443 if (frame->type == FRAME_TYPE_MANAGED)
3444 method = mono_jit_info_get_method (frame->ji);
3447 gchar *location = mono_debug_print_stack_frame (method, frame->native_offset, frame->domain);
3448 g_string_append_printf (text, " %s\n", location);
3451 g_string_append_printf (text, " at <unknown> <0x%05x>\n", frame->native_offset);
3455 fprintf (stdout, "%s", text->str);
3457 #if PLATFORM_WIN32 && TARGET_WIN32 && _DEBUG
3458 OutputDebugStringA(text->str);
3461 g_string_free (text, TRUE);
3466 mono_threads_perform_thread_dump (void)
3468 ThreadDumpUserData ud;
3469 MonoInternalThread *thread_array [128];
3470 int tindex, nthreads;
3472 if (!thread_dump_requested)
3475 printf ("Full thread dump:\n");
3477 /* Make a copy of the threads hash to avoid doing work inside threads_lock () */
3478 nthreads = collect_threads (thread_array, 128);
3480 memset (&ud, 0, sizeof (ud));
3481 ud.frames = g_new0 (MonoStackFrameInfo, 256);
3482 ud.max_frames = 256;
3484 for (tindex = 0; tindex < nthreads; ++tindex)
3485 dump_thread (thread_array [tindex], &ud);
3489 thread_dump_requested = FALSE;
3492 /* Obtain the thread dump of all threads */
3494 mono_threads_get_thread_dump (MonoArray **out_threads, MonoArray **out_stack_frames, MonoError *error)
3497 ThreadDumpUserData ud;
3498 MonoInternalThread *thread_array [128];
3499 MonoDomain *domain = mono_domain_get ();
3500 MonoDebugSourceLocation *location;
3501 int tindex, nthreads;
3503 mono_error_init (error);
3505 *out_threads = NULL;
3506 *out_stack_frames = NULL;
3508 /* Make a copy of the threads hash to avoid doing work inside threads_lock () */
3509 nthreads = collect_threads (thread_array, 128);
3511 memset (&ud, 0, sizeof (ud));
3512 ud.frames = g_new0 (MonoStackFrameInfo, 256);
3513 ud.max_frames = 256;
3515 *out_threads = mono_array_new_checked (domain, mono_defaults.thread_class, nthreads, error);
3518 *out_stack_frames = mono_array_new_checked (domain, mono_defaults.array_class, nthreads, error);
3522 for (tindex = 0; tindex < nthreads; ++tindex) {
3523 MonoInternalThread *thread = thread_array [tindex];
3524 MonoArray *thread_frames;
3530 /* Collect frames for the thread */
3531 if (thread == mono_thread_internal_current ()) {
3532 get_thread_dump (mono_thread_info_current (), &ud);
3534 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), FALSE, get_thread_dump, &ud);
3537 mono_array_setref_fast (*out_threads, tindex, mono_thread_current_for_thread (thread));
3539 thread_frames = mono_array_new_checked (domain, mono_defaults.stack_frame_class, ud.nframes, error);
3542 mono_array_setref_fast (*out_stack_frames, tindex, thread_frames);
3544 for (i = 0; i < ud.nframes; ++i) {
3545 MonoStackFrameInfo *frame = &ud.frames [i];
3546 MonoMethod *method = NULL;
3547 MonoStackFrame *sf = (MonoStackFrame *)mono_object_new_checked (domain, mono_defaults.stack_frame_class, error);
3551 sf->native_offset = frame->native_offset;
3553 if (frame->type == FRAME_TYPE_MANAGED)
3554 method = mono_jit_info_get_method (frame->ji);
3557 sf->method_address = (gsize) frame->ji->code_start;
3559 MonoReflectionMethod *rm = mono_method_get_object_checked (domain, method, NULL, error);
3562 MONO_OBJECT_SETREF (sf, method, rm);
3564 location = mono_debug_lookup_source_location (method, frame->native_offset, domain);
3566 sf->il_offset = location->il_offset;
3568 if (location && location->source_file) {
3569 MONO_OBJECT_SETREF (sf, filename, mono_string_new (domain, location->source_file));
3570 sf->line = location->row;
3571 sf->column = location->column;
3573 mono_debug_free_source_location (location);
3578 mono_array_setref (thread_frames, i, sf);
3584 return is_ok (error);
3588 * mono_threads_request_thread_dump:
3590 * Ask all threads except the current to print their stacktrace to stdout.
3593 mono_threads_request_thread_dump (void)
3595 /*The new thread dump code runs out of the finalizer thread. */
3596 thread_dump_requested = TRUE;
3597 mono_gc_finalize_notify ();
3602 gint allocated; /* +1 so that refs [allocated] == NULL */
3606 typedef struct ref_stack RefStack;
3609 ref_stack_new (gint initial_size)
3613 initial_size = MAX (initial_size, 16) + 1;
3614 rs = g_new0 (RefStack, 1);
3615 rs->refs = g_new0 (gpointer, initial_size);
3616 rs->allocated = initial_size;
3621 ref_stack_destroy (gpointer ptr)
3623 RefStack *rs = (RefStack *)ptr;
3632 ref_stack_push (RefStack *rs, gpointer ptr)
3634 g_assert (rs != NULL);
3636 if (rs->bottom >= rs->allocated) {
3637 rs->refs = (void **)g_realloc (rs->refs, rs->allocated * 2 * sizeof (gpointer) + 1);
3638 rs->allocated <<= 1;
3639 rs->refs [rs->allocated] = NULL;
3641 rs->refs [rs->bottom++] = ptr;
3645 ref_stack_pop (RefStack *rs)
3647 if (rs == NULL || rs->bottom == 0)
3651 rs->refs [rs->bottom] = NULL;
3655 ref_stack_find (RefStack *rs, gpointer ptr)
3662 for (refs = rs->refs; refs && *refs; refs++) {
3670 * mono_thread_push_appdomain_ref:
3672 * Register that the current thread may have references to objects in domain
3673 * @domain on its stack. Each call to this function should be paired with a
3674 * call to pop_appdomain_ref.
3677 mono_thread_push_appdomain_ref (MonoDomain *domain)
3679 MonoInternalThread *thread = mono_thread_internal_current ();
3682 /* printf ("PUSH REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, domain->friendly_name); */
3683 SPIN_LOCK (thread->lock_thread_id);
3684 if (thread->appdomain_refs == NULL)
3685 thread->appdomain_refs = ref_stack_new (16);
3686 ref_stack_push ((RefStack *)thread->appdomain_refs, domain);
3687 SPIN_UNLOCK (thread->lock_thread_id);
3692 mono_thread_pop_appdomain_ref (void)
3694 MonoInternalThread *thread = mono_thread_internal_current ();
3697 /* printf ("POP REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, ((MonoDomain*)(thread->appdomain_refs->data))->friendly_name); */
3698 SPIN_LOCK (thread->lock_thread_id);
3699 ref_stack_pop ((RefStack *)thread->appdomain_refs);
3700 SPIN_UNLOCK (thread->lock_thread_id);
3705 mono_thread_internal_has_appdomain_ref (MonoInternalThread *thread, MonoDomain *domain)
3708 SPIN_LOCK (thread->lock_thread_id);
3709 res = ref_stack_find ((RefStack *)thread->appdomain_refs, domain);
3710 SPIN_UNLOCK (thread->lock_thread_id);
3715 mono_thread_has_appdomain_ref (MonoThread *thread, MonoDomain *domain)
3717 return mono_thread_internal_has_appdomain_ref (thread->internal_thread, domain);
3720 typedef struct abort_appdomain_data {
3721 struct wait_data wait;
3723 } abort_appdomain_data;
3726 collect_appdomain_thread (gpointer key, gpointer value, gpointer user_data)
3728 MonoInternalThread *thread = (MonoInternalThread*)value;
3729 abort_appdomain_data *data = (abort_appdomain_data*)user_data;
3730 MonoDomain *domain = data->domain;
3732 if (mono_thread_internal_has_appdomain_ref (thread, domain)) {
3733 /* printf ("ABORTING THREAD %p BECAUSE IT REFERENCES DOMAIN %s.\n", thread->tid, domain->friendly_name); */
3735 if(data->wait.num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS) {
3736 data->wait.handles [data->wait.num] = mono_threads_open_thread_handle (thread->handle);
3737 data->wait.threads [data->wait.num] = thread;
3740 /* Just ignore the rest, we can't do anything with
3748 * mono_threads_abort_appdomain_threads:
3750 * Abort threads which has references to the given appdomain.
3753 mono_threads_abort_appdomain_threads (MonoDomain *domain, int timeout)
3755 #ifdef __native_client__
3759 abort_appdomain_data user_data;
3761 int orig_timeout = timeout;
3764 THREAD_DEBUG (g_message ("%s: starting abort", __func__));
3766 start_time = mono_msec_ticks ();
3768 mono_threads_lock ();
3770 user_data.domain = domain;
3771 user_data.wait.num = 0;
3772 /* This shouldn't take any locks */
3773 mono_g_hash_table_foreach (threads, collect_appdomain_thread, &user_data);
3774 mono_threads_unlock ();
3776 if (user_data.wait.num > 0) {
3777 /* Abort the threads outside the threads lock */
3778 for (i = 0; i < user_data.wait.num; ++i)
3779 mono_thread_internal_abort (user_data.wait.threads [i]);
3782 * We should wait for the threads either to abort, or to leave the
3783 * domain. We can't do the latter, so we wait with a timeout.
3785 wait_for_tids (&user_data.wait, 100);
3788 /* Update remaining time */
3789 timeout -= mono_msec_ticks () - start_time;
3790 start_time = mono_msec_ticks ();
3792 if (orig_timeout != -1 && timeout < 0)
3795 while (user_data.wait.num > 0);
3797 THREAD_DEBUG (g_message ("%s: abort done", __func__));
3803 clear_cached_culture (gpointer key, gpointer value, gpointer user_data)
3805 MonoInternalThread *thread = (MonoInternalThread*)value;
3806 MonoDomain *domain = (MonoDomain*)user_data;
3809 /* No locking needed here */
3810 /* FIXME: why no locking? writes to the cache are protected with synch_cs above */
3812 if (thread->cached_culture_info) {
3813 for (i = 0; i < NUM_CACHED_CULTURES * 2; ++i) {
3814 MonoObject *obj = mono_array_get (thread->cached_culture_info, MonoObject*, i);
3815 if (obj && obj->vtable->domain == domain)
3816 mono_array_set (thread->cached_culture_info, MonoObject*, i, NULL);
3822 * mono_threads_clear_cached_culture:
3824 * Clear the cached_current_culture from all threads if it is in the
3828 mono_threads_clear_cached_culture (MonoDomain *domain)
3830 mono_threads_lock ();
3831 mono_g_hash_table_foreach (threads, clear_cached_culture, domain);
3832 mono_threads_unlock ();
3836 * mono_thread_get_undeniable_exception:
3838 * Return an exception which needs to be raised when leaving a catch clause.
3839 * This is used for undeniable exception propagation.
3842 mono_thread_get_undeniable_exception (void)
3844 MonoInternalThread *thread = mono_thread_internal_current ();
3846 if (thread && thread->abort_exc && !is_running_protected_wrapper ()) {
3848 * FIXME: Clear the abort exception and return an AppDomainUnloaded
3849 * exception if the thread no longer references a dying appdomain.
3851 thread->abort_exc->trace_ips = NULL;
3852 thread->abort_exc->stack_trace = NULL;
3853 return thread->abort_exc;
3859 #if MONO_SMALL_CONFIG
3860 #define NUM_STATIC_DATA_IDX 4
3861 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
3865 #define NUM_STATIC_DATA_IDX 8
3866 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
3867 1024, 4096, 16384, 65536, 262144, 1048576, 4194304, 16777216
3871 static MonoBitSet *thread_reference_bitmaps [NUM_STATIC_DATA_IDX];
3872 static MonoBitSet *context_reference_bitmaps [NUM_STATIC_DATA_IDX];
3875 mark_slots (void *addr, MonoBitSet **bitmaps, MonoGCMarkFunc mark_func, void *gc_data)
3877 gpointer *static_data = (gpointer *)addr;
3879 for (int i = 0; i < NUM_STATIC_DATA_IDX; ++i) {
3880 void **ptr = (void **)static_data [i];
3885 MONO_BITSET_FOREACH (bitmaps [i], idx, {
3886 void **p = ptr + idx;
3889 mark_func ((MonoObject**)p, gc_data);
3895 mark_tls_slots (void *addr, MonoGCMarkFunc mark_func, void *gc_data)
3897 mark_slots (addr, thread_reference_bitmaps, mark_func, gc_data);
3901 mark_ctx_slots (void *addr, MonoGCMarkFunc mark_func, void *gc_data)
3903 mark_slots (addr, context_reference_bitmaps, mark_func, gc_data);
3907 * mono_alloc_static_data
3909 * Allocate memory blocks for storing threads or context static data
3912 mono_alloc_static_data (gpointer **static_data_ptr, guint32 offset, gboolean threadlocal)
3914 guint idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
3917 gpointer* static_data = *static_data_ptr;
3919 static MonoGCDescriptor tls_desc = MONO_GC_DESCRIPTOR_NULL;
3920 static MonoGCDescriptor ctx_desc = MONO_GC_DESCRIPTOR_NULL;
3922 if (mono_gc_user_markers_supported ()) {
3923 if (tls_desc == MONO_GC_DESCRIPTOR_NULL)
3924 tls_desc = mono_gc_make_root_descr_user (mark_tls_slots);
3926 if (ctx_desc == MONO_GC_DESCRIPTOR_NULL)
3927 ctx_desc = mono_gc_make_root_descr_user (mark_ctx_slots);
3930 static_data = (void **)mono_gc_alloc_fixed (static_data_size [0], threadlocal ? tls_desc : ctx_desc,
3931 threadlocal ? MONO_ROOT_SOURCE_THREAD_STATIC : MONO_ROOT_SOURCE_CONTEXT_STATIC,
3932 threadlocal ? "managed thread-static variables" : "managed context-static variables");
3933 *static_data_ptr = static_data;
3934 static_data [0] = static_data;
3937 for (i = 1; i <= idx; ++i) {
3938 if (static_data [i])
3941 if (mono_gc_user_markers_supported ())
3942 static_data [i] = g_malloc0 (static_data_size [i]);
3944 static_data [i] = mono_gc_alloc_fixed (static_data_size [i], MONO_GC_DESCRIPTOR_NULL,
3945 threadlocal ? MONO_ROOT_SOURCE_THREAD_STATIC : MONO_ROOT_SOURCE_CONTEXT_STATIC,
3946 threadlocal ? "managed thread-static variables" : "managed context-static variables");
3951 mono_free_static_data (gpointer* static_data)
3954 for (i = 1; i < NUM_STATIC_DATA_IDX; ++i) {
3955 gpointer p = static_data [i];
3959 * At this point, the static data pointer array is still registered with the
3960 * GC, so must ensure that mark_tls_slots() will not encounter any invalid
3961 * data. Freeing the individual arrays without first nulling their slots
3962 * would make it possible for mark_tls/ctx_slots() to encounter a pointer to
3963 * such an already freed array. See bug #13813.
3965 static_data [i] = NULL;
3966 mono_memory_write_barrier ();
3967 if (mono_gc_user_markers_supported ())
3970 mono_gc_free_fixed (p);
3972 mono_gc_free_fixed (static_data);
3976 * mono_init_static_data_info
3978 * Initializes static data counters
3980 static void mono_init_static_data_info (StaticDataInfo *static_data)
3982 static_data->idx = 0;
3983 static_data->offset = 0;
3984 static_data->freelist = NULL;
3988 * mono_alloc_static_data_slot
3990 * Generates an offset for static data. static_data contains the counters
3991 * used to generate it.
3994 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align)
3996 if (!static_data->idx && !static_data->offset) {
3998 * we use the first chunk of the first allocation also as
3999 * an array for the rest of the data
4001 static_data->offset = sizeof (gpointer) * NUM_STATIC_DATA_IDX;
4003 static_data->offset += align - 1;
4004 static_data->offset &= ~(align - 1);
4005 if (static_data->offset + size >= static_data_size [static_data->idx]) {
4006 static_data->idx ++;
4007 g_assert (size <= static_data_size [static_data->idx]);
4008 g_assert (static_data->idx < NUM_STATIC_DATA_IDX);
4009 static_data->offset = 0;
4011 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (static_data->idx, static_data->offset, 0);
4012 static_data->offset += size;
4017 * LOCKING: requires that threads_mutex is held
4020 context_adjust_static_data (MonoAppContext *ctx)
4022 if (context_static_info.offset || context_static_info.idx > 0) {
4023 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (context_static_info.idx, context_static_info.offset, 0);
4024 mono_alloc_static_data (&ctx->static_data, offset, FALSE);
4025 ctx->data->static_data = ctx->static_data;
4030 * LOCKING: requires that threads_mutex is held
4033 alloc_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
4035 MonoInternalThread *thread = (MonoInternalThread *)value;
4036 guint32 offset = GPOINTER_TO_UINT (user);
4038 mono_alloc_static_data (&(thread->static_data), offset, TRUE);
4042 * LOCKING: requires that threads_mutex is held
4045 alloc_context_static_data_helper (gpointer key, gpointer value, gpointer user)
4047 MonoAppContext *ctx = (MonoAppContext *) mono_gchandle_get_target (GPOINTER_TO_INT (key));
4052 guint32 offset = GPOINTER_TO_UINT (user);
4053 mono_alloc_static_data (&ctx->static_data, offset, FALSE);
4054 ctx->data->static_data = ctx->static_data;
4057 static StaticDataFreeList*
4058 search_slot_in_freelist (StaticDataInfo *static_data, guint32 size, guint32 align)
4060 StaticDataFreeList* prev = NULL;
4061 StaticDataFreeList* tmp = static_data->freelist;
4063 if (tmp->size == size) {
4065 prev->next = tmp->next;
4067 static_data->freelist = tmp->next;
4076 #if SIZEOF_VOID_P == 4
4083 update_reference_bitmap (MonoBitSet **sets, guint32 offset, uintptr_t *bitmap, int numbits)
4085 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4087 sets [idx] = mono_bitset_new (static_data_size [idx] / sizeof (uintptr_t), 0);
4088 MonoBitSet *rb = sets [idx];
4089 offset = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
4090 offset /= sizeof (uintptr_t);
4091 /* offset is now the bitmap offset */
4092 for (int i = 0; i < numbits; ++i) {
4093 if (bitmap [i / sizeof (uintptr_t)] & (ONE_P << (i & (sizeof (uintptr_t) * 8 -1))))
4094 mono_bitset_set_fast (rb, offset + i);
4099 clear_reference_bitmap (MonoBitSet **sets, guint32 offset, guint32 size)
4101 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4102 MonoBitSet *rb = sets [idx];
4103 offset = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
4104 offset /= sizeof (uintptr_t);
4105 /* offset is now the bitmap offset */
4106 for (int i = 0; i < size / sizeof (uintptr_t); i++)
4107 mono_bitset_clear_fast (rb, offset + i);
4111 mono_alloc_special_static_data (guint32 static_type, guint32 size, guint32 align, uintptr_t *bitmap, int numbits)
4113 g_assert (static_type == SPECIAL_STATIC_THREAD || static_type == SPECIAL_STATIC_CONTEXT);
4115 StaticDataInfo *info;
4118 if (static_type == SPECIAL_STATIC_THREAD) {
4119 info = &thread_static_info;
4120 sets = thread_reference_bitmaps;
4122 info = &context_static_info;
4123 sets = context_reference_bitmaps;
4126 mono_threads_lock ();
4128 StaticDataFreeList *item = search_slot_in_freelist (info, size, align);
4132 offset = item->offset;
4135 offset = mono_alloc_static_data_slot (info, size, align);
4138 update_reference_bitmap (sets, offset, bitmap, numbits);
4140 if (static_type == SPECIAL_STATIC_THREAD) {
4141 /* This can be called during startup */
4142 if (threads != NULL)
4143 mono_g_hash_table_foreach (threads, alloc_thread_static_data_helper, GUINT_TO_POINTER (offset));
4145 if (contexts != NULL)
4146 g_hash_table_foreach (contexts, alloc_context_static_data_helper, GUINT_TO_POINTER (offset));
4148 ACCESS_SPECIAL_STATIC_OFFSET (offset, type) = SPECIAL_STATIC_OFFSET_TYPE_CONTEXT;
4151 mono_threads_unlock ();
4157 mono_get_special_static_data_for_thread (MonoInternalThread *thread, guint32 offset)
4159 guint32 static_type = ACCESS_SPECIAL_STATIC_OFFSET (offset, type);
4161 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4162 return get_thread_static_data (thread, offset);
4164 return get_context_static_data (thread->current_appcontext, offset);
4169 mono_get_special_static_data (guint32 offset)
4171 return mono_get_special_static_data_for_thread (mono_thread_internal_current (), offset);
4180 * LOCKING: requires that threads_mutex is held
4183 free_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
4185 MonoInternalThread *thread = (MonoInternalThread *)value;
4186 OffsetSize *data = (OffsetSize *)user;
4187 int idx = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, index);
4188 int off = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, offset);
4191 if (!thread->static_data || !thread->static_data [idx])
4193 ptr = ((char*) thread->static_data [idx]) + off;
4194 mono_gc_bzero_atomic (ptr, data->size);
4198 * LOCKING: requires that threads_mutex is held
4201 free_context_static_data_helper (gpointer key, gpointer value, gpointer user)
4203 MonoAppContext *ctx = (MonoAppContext *) mono_gchandle_get_target (GPOINTER_TO_INT (key));
4208 OffsetSize *data = (OffsetSize *)user;
4209 int idx = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, index);
4210 int off = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, offset);
4213 if (!ctx->static_data || !ctx->static_data [idx])
4216 ptr = ((char*) ctx->static_data [idx]) + off;
4217 mono_gc_bzero_atomic (ptr, data->size);
4221 do_free_special_slot (guint32 offset, guint32 size)
4223 guint32 static_type = ACCESS_SPECIAL_STATIC_OFFSET (offset, type);
4225 StaticDataInfo *info;
4227 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4228 info = &thread_static_info;
4229 sets = thread_reference_bitmaps;
4231 info = &context_static_info;
4232 sets = context_reference_bitmaps;
4235 guint32 data_offset = offset;
4236 ACCESS_SPECIAL_STATIC_OFFSET (data_offset, type) = 0;
4237 OffsetSize data = { data_offset, size };
4239 clear_reference_bitmap (sets, data.offset, data.size);
4241 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4242 if (threads != NULL)
4243 mono_g_hash_table_foreach (threads, free_thread_static_data_helper, &data);
4245 if (contexts != NULL)
4246 g_hash_table_foreach (contexts, free_context_static_data_helper, &data);
4249 if (!mono_runtime_is_shutting_down ()) {
4250 StaticDataFreeList *item = g_new0 (StaticDataFreeList, 1);
4252 item->offset = offset;
4255 item->next = info->freelist;
4256 info->freelist = item;
4261 do_free_special (gpointer key, gpointer value, gpointer data)
4263 MonoClassField *field = (MonoClassField *)key;
4264 guint32 offset = GPOINTER_TO_UINT (value);
4267 size = mono_type_size (field->type, &align);
4268 do_free_special_slot (offset, size);
4272 mono_alloc_special_static_data_free (GHashTable *special_static_fields)
4274 mono_threads_lock ();
4276 g_hash_table_foreach (special_static_fields, do_free_special, NULL);
4278 mono_threads_unlock ();
4282 static void CALLBACK dummy_apc (ULONG_PTR param)
4288 * mono_thread_execute_interruption
4290 * Performs the operation that the requested thread state requires (abort,
4293 static MonoException*
4294 mono_thread_execute_interruption (void)
4296 MonoInternalThread *thread = mono_thread_internal_current ();
4297 MonoThread *sys_thread = mono_thread_current ();
4299 LOCK_THREAD (thread);
4301 /* MonoThread::interruption_requested can only be changed with atomics */
4302 if (InterlockedCompareExchange (&thread->interruption_requested, FALSE, TRUE)) {
4303 /* this will consume pending APC calls */
4305 WaitForSingleObjectEx (GetCurrentThread(), 0, TRUE);
4307 InterlockedDecrement (&thread_interruption_requested);
4309 /* Clear the interrupted flag of the thread so it can wait again */
4310 mono_thread_info_clear_self_interrupt ();
4313 /* If there's a pending exception and an AbortRequested, the pending exception takes precedence */
4314 if (sys_thread->pending_exception) {
4317 exc = sys_thread->pending_exception;
4318 sys_thread->pending_exception = NULL;
4320 UNLOCK_THREAD (thread);
4322 } else if ((thread->state & ThreadState_AbortRequested) != 0) {
4323 UNLOCK_THREAD (thread);
4324 g_assert (sys_thread->pending_exception == NULL);
4325 if (thread->abort_exc == NULL) {
4327 * This might be racy, but it has to be called outside the lock
4328 * since it calls managed code.
4330 MONO_OBJECT_SETREF (thread, abort_exc, mono_get_exception_thread_abort ());
4332 return thread->abort_exc;
4334 else if ((thread->state & ThreadState_SuspendRequested) != 0) {
4335 /* calls UNLOCK_THREAD (thread) */
4336 self_suspend_internal ();
4339 else if ((thread->state & ThreadState_StopRequested) != 0) {
4340 /* FIXME: do this through the JIT? */
4342 UNLOCK_THREAD (thread);
4344 mono_thread_exit ();
4346 } else if (thread->thread_interrupt_requested) {
4348 thread->thread_interrupt_requested = FALSE;
4349 UNLOCK_THREAD (thread);
4351 return(mono_get_exception_thread_interrupted ());
4354 UNLOCK_THREAD (thread);
4360 * mono_thread_request_interruption
4362 * A signal handler can call this method to request the interruption of a
4363 * thread. The result of the interruption will depend on the current state of
4364 * the thread. If the result is an exception that needs to be throw, it is
4365 * provided as return value.
4368 mono_thread_request_interruption (gboolean running_managed)
4370 MonoInternalThread *thread = mono_thread_internal_current ();
4372 /* The thread may already be stopping */
4377 if (thread->interrupt_on_stop &&
4378 thread->state & ThreadState_StopRequested &&
4379 thread->state & ThreadState_Background)
4382 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4384 InterlockedIncrement (&thread_interruption_requested);
4386 if (!running_managed || is_running_protected_wrapper ()) {
4387 /* Can't stop while in unmanaged code. Increase the global interruption
4388 request count. When exiting the unmanaged method the count will be
4389 checked and the thread will be interrupted. */
4391 /* this will awake the thread if it is in WaitForSingleObject
4393 /* Our implementation of this function ignores the func argument */
4395 QueueUserAPC ((PAPCFUNC)dummy_apc, thread->native_handle, (ULONG_PTR)NULL);
4397 mono_thread_info_self_interrupt ();
4402 return mono_thread_execute_interruption ();
4406 /*This function should be called by a thread after it has exited all of
4407 * its handle blocks at interruption time.*/
4409 mono_thread_resume_interruption (void)
4411 MonoInternalThread *thread = mono_thread_internal_current ();
4412 gboolean still_aborting;
4414 /* The thread may already be stopping */
4418 LOCK_THREAD (thread);
4419 still_aborting = (thread->state & (ThreadState_AbortRequested|ThreadState_StopRequested)) != 0;
4420 UNLOCK_THREAD (thread);
4422 /*This can happen if the protected block called Thread::ResetAbort*/
4423 if (!still_aborting)
4426 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4428 InterlockedIncrement (&thread_interruption_requested);
4430 mono_thread_info_self_interrupt ();
4432 return mono_thread_execute_interruption ();
4435 gboolean mono_thread_interruption_requested ()
4437 if (thread_interruption_requested) {
4438 MonoInternalThread *thread = mono_thread_internal_current ();
4439 /* The thread may already be stopping */
4441 return (thread->interruption_requested);
4446 static MonoException*
4447 mono_thread_interruption_checkpoint_request (gboolean bypass_abort_protection)
4449 MonoInternalThread *thread = mono_thread_internal_current ();
4451 /* The thread may already be stopping */
4455 if (thread->interruption_requested && (bypass_abort_protection || !is_running_protected_wrapper ())) {
4456 MonoException* exc = mono_thread_execute_interruption ();
4464 * Performs the interruption of the current thread, if one has been requested,
4465 * and the thread is not running a protected wrapper.
4466 * Return the exception which needs to be thrown, if any.
4469 mono_thread_interruption_checkpoint (void)
4471 return mono_thread_interruption_checkpoint_request (FALSE);
4475 * Performs the interruption of the current thread, if one has been requested.
4476 * Return the exception which needs to be thrown, if any.
4479 mono_thread_force_interruption_checkpoint_noraise (void)
4481 return mono_thread_interruption_checkpoint_request (TRUE);
4485 * mono_set_pending_exception:
4487 * Set the pending exception of the current thread to EXC.
4488 * The exception will be thrown when execution returns to managed code.
4491 mono_set_pending_exception (MonoException *exc)
4493 MonoThread *thread = mono_thread_current ();
4495 /* The thread may already be stopping */
4499 MONO_OBJECT_SETREF (thread, pending_exception, exc);
4501 mono_thread_request_interruption (FALSE);
4505 * mono_thread_interruption_request_flag:
4507 * Returns the address of a flag that will be non-zero if an interruption has
4508 * been requested for a thread. The thread to interrupt may not be the current
4509 * thread, so an additional call to mono_thread_interruption_requested() or
4510 * mono_thread_interruption_checkpoint() is allways needed if the flag is not
4513 gint32* mono_thread_interruption_request_flag ()
4515 return &thread_interruption_requested;
4519 mono_thread_init_apartment_state (void)
4522 MonoInternalThread* thread = mono_thread_internal_current ();
4524 /* Positive return value indicates success, either
4525 * S_OK if this is first CoInitialize call, or
4526 * S_FALSE if CoInitialize already called, but with same
4527 * threading model. A negative value indicates failure,
4528 * probably due to trying to change the threading model.
4530 if (CoInitializeEx(NULL, (thread->apartment_state == ThreadApartmentState_STA)
4531 ? COINIT_APARTMENTTHREADED
4532 : COINIT_MULTITHREADED) < 0) {
4533 thread->apartment_state = ThreadApartmentState_Unknown;
4539 mono_thread_cleanup_apartment_state (void)
4542 MonoInternalThread* thread = mono_thread_internal_current ();
4544 if (thread && thread->apartment_state != ThreadApartmentState_Unknown) {
4551 mono_thread_set_state (MonoInternalThread *thread, MonoThreadState state)
4553 LOCK_THREAD (thread);
4554 thread->state |= state;
4555 UNLOCK_THREAD (thread);
4559 * mono_thread_test_and_set_state:
4561 * Test if current state of @thread include @test. If it does not, OR @set into the state.
4563 * Returns TRUE is @set was OR'd in.
4566 mono_thread_test_and_set_state (MonoInternalThread *thread, MonoThreadState test, MonoThreadState set)
4568 LOCK_THREAD (thread);
4570 if ((thread->state & test) != 0) {
4571 UNLOCK_THREAD (thread);
4575 thread->state |= set;
4576 UNLOCK_THREAD (thread);
4582 mono_thread_clr_state (MonoInternalThread *thread, MonoThreadState state)
4584 LOCK_THREAD (thread);
4585 thread->state &= ~state;
4586 UNLOCK_THREAD (thread);
4590 mono_thread_test_state (MonoInternalThread *thread, MonoThreadState test)
4592 gboolean ret = FALSE;
4594 LOCK_THREAD (thread);
4596 if ((thread->state & test) != 0) {
4600 UNLOCK_THREAD (thread);
4605 static gboolean has_tls_get = FALSE;
4608 mono_runtime_set_has_tls_get (gboolean val)
4614 mono_runtime_has_tls_get (void)
4620 self_interrupt_thread (void *_unused)
4622 MonoThreadInfo *info = mono_thread_info_current ();
4623 MonoException *exc = mono_thread_execute_interruption ();
4624 if (exc) /*We must use _with_context since we didn't trampoline into the runtime*/
4625 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. */
4626 g_assert_not_reached (); /*this MUST not happen since we can't resume from an async call*/
4630 mono_jit_info_match (MonoJitInfo *ji, gpointer ip)
4634 return ji->code_start <= ip && (char*)ip < (char*)ji->code_start + ji->code_size;
4638 last_managed (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
4640 MonoJitInfo **dest = (MonoJitInfo **)data;
4646 mono_thread_info_get_last_managed (MonoThreadInfo *info)
4648 MonoJitInfo *ji = NULL;
4653 * The suspended thread might be holding runtime locks. Make sure we don't try taking
4654 * any runtime locks while unwinding. In coop case we shouldn't safepoint in regions
4655 * where we hold runtime locks.
4657 if (!mono_threads_is_coop_enabled ())
4658 mono_thread_info_set_is_async_context (TRUE);
4659 mono_get_eh_callbacks ()->mono_walk_stack_with_state (last_managed, mono_thread_info_get_suspend_state (info), MONO_UNWIND_SIGNAL_SAFE, &ji);
4660 if (!mono_threads_is_coop_enabled ())
4661 mono_thread_info_set_is_async_context (FALSE);
4666 MonoInternalThread *thread;
4667 gboolean install_async_abort;
4668 MonoThreadInfoInterruptToken *interrupt_token;
4671 static SuspendThreadResult
4672 async_abort_critical (MonoThreadInfo *info, gpointer ud)
4674 AbortThreadData *data = (AbortThreadData *)ud;
4675 MonoInternalThread *thread = data->thread;
4676 MonoJitInfo *ji = NULL;
4677 gboolean protected_wrapper;
4678 gboolean running_managed;
4680 if (mono_get_eh_callbacks ()->mono_install_handler_block_guard (mono_thread_info_get_suspend_state (info)))
4681 return MonoResumeThread;
4684 The target thread is running at least one protected block, which must not be interrupted, so we give up.
4685 The protected block code will give them a chance when appropriate.
4687 if (thread->abort_protected_block_count)
4688 return MonoResumeThread;
4690 /*someone is already interrupting it*/
4691 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4692 return MonoResumeThread;
4694 InterlockedIncrement (&thread_interruption_requested);
4696 ji = mono_thread_info_get_last_managed (info);
4697 protected_wrapper = ji && !ji->is_trampoline && !ji->async && mono_threads_is_critical_method (mono_jit_info_get_method (ji));
4698 running_managed = mono_jit_info_match (ji, MONO_CONTEXT_GET_IP (&mono_thread_info_get_suspend_state (info)->ctx));
4700 if (!protected_wrapper && running_managed) {
4701 /*We are in managed code*/
4702 /*Set the thread to call */
4703 if (data->install_async_abort)
4704 mono_thread_info_setup_async_call (info, self_interrupt_thread, NULL);
4705 return MonoResumeThread;
4708 * This will cause waits to be broken.
4709 * It will also prevent the thread from entering a wait, so if the thread returns
4710 * from the wait before it receives the abort signal, it will just spin in the wait
4711 * functions in the io-layer until the signal handler calls QueueUserAPC which will
4714 data->interrupt_token = mono_thread_info_prepare_interrupt (info);
4716 return MonoResumeThread;
4721 async_abort_internal (MonoInternalThread *thread, gboolean install_async_abort)
4723 AbortThreadData data;
4725 g_assert (thread != mono_thread_internal_current ());
4727 data.thread = thread;
4728 data.install_async_abort = install_async_abort;
4729 data.interrupt_token = NULL;
4731 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), TRUE, async_abort_critical, &data);
4732 if (data.interrupt_token)
4733 mono_thread_info_finish_interrupt (data.interrupt_token);
4734 /*FIXME we need to wait for interruption to complete -- figure out how much into interruption we should wait for here*/
4738 self_abort_internal (MonoError *error)
4742 mono_error_init (error);
4744 /* FIXME this is insanely broken, it doesn't cause interruption to happen synchronously
4745 * since passing FALSE to mono_thread_request_interruption makes sure it returns NULL */
4748 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.
4750 exc = mono_thread_request_interruption (TRUE);
4752 mono_error_set_exception_instance (error, exc);
4754 mono_thread_info_self_interrupt ();
4758 MonoInternalThread *thread;
4760 MonoThreadInfoInterruptToken *interrupt_token;
4761 } SuspendThreadData;
4763 static SuspendThreadResult
4764 async_suspend_critical (MonoThreadInfo *info, gpointer ud)
4766 SuspendThreadData *data = (SuspendThreadData *)ud;
4767 MonoInternalThread *thread = data->thread;
4768 MonoJitInfo *ji = NULL;
4769 gboolean protected_wrapper;
4770 gboolean running_managed;
4772 ji = mono_thread_info_get_last_managed (info);
4773 protected_wrapper = ji && !ji->is_trampoline && !ji->async && mono_threads_is_critical_method (mono_jit_info_get_method (ji));
4774 running_managed = mono_jit_info_match (ji, MONO_CONTEXT_GET_IP (&mono_thread_info_get_suspend_state (info)->ctx));
4776 if (running_managed && !protected_wrapper) {
4777 thread->state &= ~ThreadState_SuspendRequested;
4778 thread->state |= ThreadState_Suspended;
4779 return KeepSuspended;
4781 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 0)
4782 InterlockedIncrement (&thread_interruption_requested);
4783 if (data->interrupt)
4784 data->interrupt_token = mono_thread_info_prepare_interrupt ((MonoThreadInfo *)thread->thread_info);
4786 return MonoResumeThread;
4790 /* LOCKING: called with @thread synch_cs held, and releases it */
4792 async_suspend_internal (MonoInternalThread *thread, gboolean interrupt)
4794 SuspendThreadData data;
4796 g_assert (thread != mono_thread_internal_current ());
4798 data.thread = thread;
4799 data.interrupt = interrupt;
4800 data.interrupt_token = NULL;
4802 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), interrupt, async_suspend_critical, &data);
4803 if (data.interrupt_token)
4804 mono_thread_info_finish_interrupt (data.interrupt_token);
4806 UNLOCK_THREAD (thread);
4809 /* LOCKING: called with @thread synch_cs held, and releases it */
4811 self_suspend_internal (void)
4813 MonoInternalThread *thread;
4815 thread = mono_thread_internal_current ();
4817 mono_thread_info_begin_self_suspend ();
4818 thread->state &= ~ThreadState_SuspendRequested;
4819 thread->state |= ThreadState_Suspended;
4821 UNLOCK_THREAD (thread);
4823 mono_thread_info_end_self_suspend ();
4827 * mono_thread_is_foreign:
4828 * @thread: the thread to query
4830 * This function allows one to determine if a thread was created by the mono runtime and has
4831 * a well defined lifecycle or it's a foreigh one, created by the native environment.
4833 * Returns: TRUE if @thread was not created by the runtime.
4836 mono_thread_is_foreign (MonoThread *thread)
4838 MonoThreadInfo *info = (MonoThreadInfo *)thread->internal_thread->thread_info;
4839 return info->runtime_thread == FALSE;
4843 * mono_add_joinable_thread:
4845 * Add TID to the list of joinable threads.
4846 * LOCKING: Acquires the threads lock.
4849 mono_threads_add_joinable_thread (gpointer tid)
4853 * We cannot detach from threads because it causes problems like
4854 * 2fd16f60/r114307. So we collect them and join them when
4855 * we have time (in he finalizer thread).
4857 joinable_threads_lock ();
4858 if (!joinable_threads)
4859 joinable_threads = g_hash_table_new (NULL, NULL);
4860 g_hash_table_insert (joinable_threads, tid, tid);
4861 joinable_thread_count ++;
4862 joinable_threads_unlock ();
4864 mono_gc_finalize_notify ();
4869 * mono_threads_join_threads:
4871 * Join all joinable threads. This is called from the finalizer thread.
4872 * LOCKING: Acquires the threads lock.
4875 mono_threads_join_threads (void)
4878 GHashTableIter iter;
4885 if (!joinable_thread_count)
4889 joinable_threads_lock ();
4891 if (g_hash_table_size (joinable_threads)) {
4892 g_hash_table_iter_init (&iter, joinable_threads);
4893 g_hash_table_iter_next (&iter, &key, (void**)&tid);
4894 thread = (pthread_t)tid;
4895 g_hash_table_remove (joinable_threads, key);
4896 joinable_thread_count --;
4899 joinable_threads_unlock ();
4901 if (thread != pthread_self ()) {
4903 /* This shouldn't block */
4904 mono_native_thread_join (thread);
4917 * Wait for thread TID to exit.
4918 * LOCKING: Acquires the threads lock.
4921 mono_thread_join (gpointer tid)
4925 gboolean found = FALSE;
4927 joinable_threads_lock ();
4928 if (!joinable_threads)
4929 joinable_threads = g_hash_table_new (NULL, NULL);
4930 if (g_hash_table_lookup (joinable_threads, tid)) {
4931 g_hash_table_remove (joinable_threads, tid);
4932 joinable_thread_count --;
4935 joinable_threads_unlock ();
4938 thread = (pthread_t)tid;
4940 mono_native_thread_join (thread);
4946 mono_thread_internal_check_for_interruption_critical (MonoInternalThread *thread)
4948 if ((thread->state & (ThreadState_StopRequested | ThreadState_SuspendRequested)) != 0)
4949 mono_thread_interruption_checkpoint ();
4953 mono_thread_internal_unhandled_exception (MonoObject* exc)
4955 MonoClass *klass = exc->vtable->klass;
4956 if (is_threadabort_exception (klass)) {
4957 mono_thread_internal_reset_abort (mono_thread_internal_current ());
4958 } else if (!is_appdomainunloaded_exception (klass)
4959 && mono_runtime_unhandled_exception_policy_get () == MONO_UNHANDLED_POLICY_CURRENT) {
4960 mono_unhandled_exception (exc);
4961 if (mono_environment_exitcode_get () == 1) {
4962 mono_environment_exitcode_set (255);
4963 mono_invoke_unhandled_exception_hook (exc);
4964 g_assert_not_reached ();
4970 ves_icall_System_Threading_Thread_GetStackTraces (MonoArray **out_threads, MonoArray **out_stack_traces)
4973 mono_threads_get_thread_dump (out_threads, out_stack_traces, &error);
4974 mono_error_set_pending_exception (&error);
4978 * mono_threads_attach_coop: called by native->managed wrappers
4982 * - @return: the original domain which needs to be restored, or NULL.
4985 * - @dummy: contains the original domain
4986 * - @return: a cookie containing current MonoThreadInfo*.
4989 mono_threads_attach_coop (MonoDomain *domain, gpointer *dummy)
4992 gboolean fresh_thread = FALSE;
4995 /* Happens when called from AOTed code which is only used in the root domain. */
4996 domain = mono_get_root_domain ();
5001 /* On coop, when we detached, we moved the thread from RUNNING->BLOCKING.
5002 * If we try to reattach we do a BLOCKING->RUNNING transition. If the thread
5003 * is fresh, mono_thread_attach() will do a STARTING->RUNNING transition so
5004 * we're only responsible for making the cookie. */
5005 if (mono_threads_is_coop_enabled ()) {
5006 MonoThreadInfo *info = mono_thread_info_current_unchecked ();
5007 fresh_thread = !info || !mono_thread_info_is_live (info);
5010 if (!mono_thread_internal_current ()) {
5011 mono_thread_attach_full (domain, FALSE);
5014 mono_thread_set_state (mono_thread_internal_current (), ThreadState_Background);
5017 orig = mono_domain_get ();
5019 mono_domain_set (domain, TRUE);
5021 if (!mono_threads_is_coop_enabled ())
5022 return orig != domain ? orig : NULL;
5026 /* mono_thread_attach put the thread in RUNNING mode from STARTING, but we need to
5027 * return the right cookie. */
5028 return mono_threads_enter_gc_unsafe_region_cookie ();
5031 /* thread state (BLOCKING|RUNNING) -> RUNNING */
5032 return mono_threads_enter_gc_unsafe_region (dummy);
5037 * mono_threads_detach_coop: called by native->managed wrappers
5040 * - @cookie: the original domain which needs to be restored, or NULL.
5044 * - @cookie: contains current MonoThreadInfo* if it was in BLOCKING mode, NULL otherwise
5045 * - @dummy: contains the original domain
5048 mono_threads_detach_coop (gpointer cookie, gpointer *dummy)
5050 MonoDomain *domain, *orig;
5052 if (!mono_threads_is_coop_enabled ()) {
5053 orig = (MonoDomain*) cookie;
5055 mono_domain_set (orig, TRUE);
5057 orig = (MonoDomain*) *dummy;
5059 domain = mono_domain_get ();
5062 /* it won't do anything if cookie is NULL
5063 * thread state RUNNING -> (RUNNING|BLOCKING) */
5064 mono_threads_exit_gc_unsafe_region (cookie, dummy);
5066 if (orig != domain) {
5068 mono_domain_unset ();
5070 mono_domain_set (orig, TRUE);
5076 mono_threads_begin_abort_protected_block (void)
5078 MonoInternalThread *thread;
5080 thread = mono_thread_internal_current ();
5081 ++thread->abort_protected_block_count;
5082 mono_memory_barrier ();
5086 mono_threads_end_abort_protected_block (void)
5088 MonoInternalThread *thread;
5090 thread = mono_thread_internal_current ();
5092 mono_memory_barrier ();
5093 --thread->abort_protected_block_count;
5097 mono_thread_try_resume_interruption (void)
5099 MonoInternalThread *thread;
5101 thread = mono_thread_internal_current ();
5102 if (thread->abort_protected_block_count || mono_get_eh_callbacks ()->mono_current_thread_has_handle_block_guard ())
5105 return mono_thread_resume_interruption ();
5109 /* Returns TRUE if the current thread is ready to be interrupted. */
5111 mono_threads_is_ready_to_be_interrupted (void)
5113 MonoInternalThread *thread;
5115 thread = mono_thread_internal_current ();
5116 LOCK_THREAD (thread);
5117 if (thread->state & (MonoThreadState)(ThreadState_StopRequested | ThreadState_SuspendRequested | ThreadState_AbortRequested)) {
5118 UNLOCK_THREAD (thread);
5122 if (thread->abort_protected_block_count || mono_get_eh_callbacks ()->mono_current_thread_has_handle_block_guard ()) {
5123 UNLOCK_THREAD (thread);
5127 UNLOCK_THREAD (thread);
5133 mono_thread_internal_describe (MonoInternalThread *internal, GString *text)
5135 g_string_append_printf (text, ", thread handle : %p", internal->handle);
5137 if (internal->thread_info) {
5138 g_string_append (text, ", state : ");
5139 mono_thread_info_describe_interrupt_token ((MonoThreadInfo*) internal->thread_info, text);
5142 if (internal->owned_mutexes) {
5145 g_string_append (text, ", owns : [");
5146 for (i = 0; i < internal->owned_mutexes->len; i++)
5147 g_string_append_printf (text, i == 0 ? "%p" : ", %p", g_ptr_array_index (internal->owned_mutexes, i));
5148 g_string_append (text, "]");
5153 mono_thread_internal_is_current (MonoInternalThread *internal)
5155 g_assert (internal);
5156 return mono_native_thread_id_equals (mono_native_thread_id_get (), MONO_UINT_TO_NATIVE_THREAD_ID (internal->tid));