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;
2857 /* Get a pseudo handle to the current process. This is just a
2858 * kludge so that wapi can build a process handle if needed.
2859 * As a pseudo handle is returned, we don't need to clean
2862 GetCurrentProcess ();
2865 void mono_thread_cleanup (void)
2867 #if !defined(RUN_IN_SUBTHREAD) && !defined(HOST_WIN32)
2868 /* The main thread must abandon any held mutexes (particularly
2869 * important for named mutexes as they are shared across
2870 * processes, see bug 74680.) This will happen when the
2871 * thread exits, but if it's not running in a subthread it
2872 * won't exit in time.
2874 mono_w32mutex_abandon ();
2878 /* This stuff needs more testing, it seems one of these
2879 * critical sections can be locked when mono_thread_cleanup is
2882 mono_coop_mutex_destroy (&threads_mutex);
2883 mono_os_mutex_destroy (&interlocked_mutex);
2884 mono_os_mutex_destroy (&delayed_free_table_mutex);
2885 mono_os_mutex_destroy (&small_id_mutex);
2886 mono_os_event_destroy (&background_change_event);
2889 mono_native_tls_free (current_object_key);
2893 mono_threads_install_cleanup (MonoThreadCleanupFunc func)
2895 mono_thread_cleanup_fn = func;
2899 mono_thread_set_manage_callback (MonoThread *thread, MonoThreadManageCallback func)
2901 thread->internal_thread->manage_callback = func;
2905 static void print_tids (gpointer key, gpointer value, gpointer user)
2907 /* GPOINTER_TO_UINT breaks horribly if sizeof(void *) >
2908 * sizeof(uint) and a cast to uint would overflow
2910 /* Older versions of glib don't have G_GSIZE_FORMAT, so just
2911 * print this as a pointer.
2913 g_message ("Waiting for: %p", key);
2918 MonoThreadHandle *handles[MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
2919 MonoInternalThread *threads[MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
2924 wait_for_tids (struct wait_data *wait, guint32 timeout)
2927 MonoThreadInfoWaitRet ret;
2929 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
2932 ret = mono_thread_info_wait_multiple_handle(wait->handles, wait->num, NULL, TRUE, timeout, TRUE);
2935 if(ret==MONO_THREAD_INFO_WAIT_RET_FAILED) {
2936 /* See the comment in build_wait_tids() */
2937 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
2941 for(i=0; i<wait->num; i++)
2942 mono_threads_close_thread_handle (wait->handles [i]);
2944 if (ret == MONO_THREAD_INFO_WAIT_RET_TIMEOUT)
2947 for(i=0; i<wait->num; i++) {
2948 MonoInternalThread *internal;
2950 internal = wait->threads [i];
2952 mono_threads_lock ();
2953 if (mono_g_hash_table_lookup (threads, (gpointer) internal->tid) == internal)
2954 g_error ("%s: failed to call mono_thread_detach_internal on thread %p, InternalThread: %p", __func__, internal->tid, internal);
2955 mono_threads_unlock ();
2959 static void wait_for_tids_or_state_change (struct wait_data *wait, guint32 timeout)
2962 MonoThreadInfoWaitRet ret;
2964 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
2966 /* Add the thread state change event, so it wakes
2967 * up if a thread changes to background mode. */
2970 ret = mono_thread_info_wait_multiple_handle (wait->handles, wait->num, &background_change_event, FALSE, timeout, TRUE);
2973 if(ret==MONO_THREAD_INFO_WAIT_RET_FAILED) {
2974 /* See the comment in build_wait_tids() */
2975 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
2979 for(i=0; i<wait->num; i++)
2980 mono_threads_close_thread_handle (wait->handles [i]);
2982 if (ret == MONO_THREAD_INFO_WAIT_RET_TIMEOUT)
2985 if (ret < wait->num) {
2986 MonoInternalThread *internal;
2988 internal = wait->threads [ret];
2990 mono_threads_lock ();
2991 if (mono_g_hash_table_lookup (threads, (gpointer) internal->tid) == internal)
2992 g_error ("%s: failed to call mono_thread_detach_internal on thread %p, InternalThread: %p", __func__, internal->tid, internal);
2993 mono_threads_unlock ();
2997 static void build_wait_tids (gpointer key, gpointer value, gpointer user)
2999 struct wait_data *wait=(struct wait_data *)user;
3001 if(wait->num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS - 1) {
3002 MonoInternalThread *thread=(MonoInternalThread *)value;
3004 /* Ignore background threads, we abort them later */
3005 /* Do not lock here since it is not needed and the caller holds threads_lock */
3006 if (thread->state & ThreadState_Background) {
3007 THREAD_DEBUG (g_message ("%s: ignoring background thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3008 return; /* just leave, ignore */
3011 if (mono_gc_is_finalizer_internal_thread (thread)) {
3012 THREAD_DEBUG (g_message ("%s: ignoring finalizer thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3016 if (thread == mono_thread_internal_current ()) {
3017 THREAD_DEBUG (g_message ("%s: ignoring current thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3021 if (mono_thread_get_main () && (thread == mono_thread_get_main ()->internal_thread)) {
3022 THREAD_DEBUG (g_message ("%s: ignoring main thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3026 if (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE) {
3027 THREAD_DEBUG (g_message ("%s: ignoring thread %" G_GSIZE_FORMAT "with DONT_MANAGE flag set.", __func__, (gsize)thread->tid));
3031 THREAD_DEBUG (g_message ("%s: Invoking mono_thread_manage callback on thread %p", __func__, thread));
3032 if ((thread->manage_callback == NULL) || (thread->manage_callback (thread->root_domain_thread) == TRUE)) {
3033 wait->handles[wait->num]=mono_threads_open_thread_handle (thread->handle);
3034 wait->threads[wait->num]=thread;
3037 THREAD_DEBUG (g_message ("%s: adding thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3039 THREAD_DEBUG (g_message ("%s: ignoring (because of callback) thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3044 /* Just ignore the rest, we can't do anything with
3051 remove_and_abort_threads (gpointer key, gpointer value, gpointer user)
3053 struct wait_data *wait=(struct wait_data *)user;
3054 MonoNativeThreadId self = mono_native_thread_id_get ();
3055 MonoInternalThread *thread = (MonoInternalThread *)value;
3057 if (wait->num >= MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS)
3060 /* The finalizer thread is not a background thread */
3061 if (!mono_native_thread_id_equals (thread_get_tid (thread), self)
3062 && (thread->state & ThreadState_Background) != 0
3063 && (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE) == 0
3065 wait->handles[wait->num] = mono_threads_open_thread_handle (thread->handle);
3066 wait->threads[wait->num] = thread;
3069 THREAD_DEBUG (g_print ("%s: Aborting id: %"G_GSIZE_FORMAT"\n", __func__, (gsize)thread->tid));
3070 mono_thread_internal_abort (thread);
3074 return !mono_native_thread_id_equals (thread_get_tid (thread), self)
3075 && !mono_gc_is_finalizer_internal_thread (thread);
3079 * mono_threads_set_shutting_down:
3081 * Is called by a thread that wants to shut down Mono. If the runtime is already
3082 * shutting down, the calling thread is suspended/stopped, and this function never
3086 mono_threads_set_shutting_down (void)
3088 MonoInternalThread *current_thread = mono_thread_internal_current ();
3090 mono_threads_lock ();
3092 if (shutting_down) {
3093 mono_threads_unlock ();
3095 /* Make sure we're properly suspended/stopped */
3097 LOCK_THREAD (current_thread);
3099 if ((current_thread->state & ThreadState_SuspendRequested) ||
3100 (current_thread->state & ThreadState_AbortRequested) ||
3101 (current_thread->state & ThreadState_StopRequested)) {
3102 UNLOCK_THREAD (current_thread);
3103 mono_thread_execute_interruption ();
3105 current_thread->state |= ThreadState_Stopped;
3106 UNLOCK_THREAD (current_thread);
3109 /*since we're killing the thread, detach it.*/
3110 mono_thread_detach_internal (current_thread);
3112 /* Wake up other threads potentially waiting for us */
3113 mono_thread_info_exit (0);
3115 shutting_down = TRUE;
3117 /* Not really a background state change, but this will
3118 * interrupt the main thread if it is waiting for all
3119 * the other threads.
3121 mono_os_event_set (&background_change_event);
3123 mono_threads_unlock ();
3127 void mono_thread_manage (void)
3129 struct wait_data wait_data;
3130 struct wait_data *wait = &wait_data;
3132 memset (wait, 0, sizeof (struct wait_data));
3133 /* join each thread that's still running */
3134 THREAD_DEBUG (g_message ("%s: Joining each running thread...", __func__));
3136 mono_threads_lock ();
3138 THREAD_DEBUG (g_message("%s: No threads", __func__));
3139 mono_threads_unlock ();
3142 mono_threads_unlock ();
3145 mono_threads_lock ();
3146 if (shutting_down) {
3147 /* somebody else is shutting down */
3148 mono_threads_unlock ();
3151 THREAD_DEBUG (g_message ("%s: There are %d threads to join", __func__, mono_g_hash_table_size (threads));
3152 mono_g_hash_table_foreach (threads, print_tids, NULL));
3154 mono_os_event_reset (&background_change_event);
3156 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3157 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3158 mono_g_hash_table_foreach (threads, build_wait_tids, wait);
3159 mono_threads_unlock ();
3161 /* Something to wait for */
3162 wait_for_tids_or_state_change (wait, INFINITE);
3164 THREAD_DEBUG (g_message ("%s: I have %d threads after waiting.", __func__, wait->num));
3165 } while(wait->num>0);
3167 /* Mono is shutting down, so just wait for the end */
3168 if (!mono_runtime_try_shutdown ()) {
3169 /*FIXME mono_thread_suspend probably should call mono_thread_execute_interruption when self interrupting. */
3170 mono_thread_suspend (mono_thread_internal_current ());
3171 mono_thread_execute_interruption ();
3175 * Remove everything but the finalizer thread and self.
3176 * Also abort all the background threads
3179 mono_threads_lock ();
3182 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3183 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3184 mono_g_hash_table_foreach_remove (threads, remove_and_abort_threads, wait);
3186 mono_threads_unlock ();
3188 THREAD_DEBUG (g_message ("%s: wait->num is now %d", __func__, wait->num));
3190 /* Something to wait for */
3191 wait_for_tids (wait, INFINITE);
3193 } while (wait->num > 0);
3196 * give the subthreads a chance to really quit (this is mainly needed
3197 * to get correct user and system times from getrusage/wait/time(1)).
3198 * This could be removed if we avoid pthread_detach() and use pthread_join().
3200 mono_thread_info_yield ();
3204 collect_threads_for_suspend (gpointer key, gpointer value, gpointer user_data)
3206 MonoInternalThread *thread = (MonoInternalThread*)value;
3207 struct wait_data *wait = (struct wait_data*)user_data;
3210 * We try to exclude threads early, to avoid running into the MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS
3212 * This needs no locking.
3214 if ((thread->state & ThreadState_Suspended) != 0 ||
3215 (thread->state & ThreadState_Stopped) != 0)
3218 if (wait->num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS) {
3219 wait->handles [wait->num] = mono_threads_open_thread_handle (thread->handle);
3220 wait->threads [wait->num] = thread;
3226 * mono_thread_suspend_all_other_threads:
3228 * Suspend all managed threads except the finalizer thread and this thread. It is
3229 * not possible to resume them later.
3231 void mono_thread_suspend_all_other_threads (void)
3233 struct wait_data wait_data;
3234 struct wait_data *wait = &wait_data;
3236 MonoNativeThreadId self = mono_native_thread_id_get ();
3237 guint32 eventidx = 0;
3238 gboolean starting, finished;
3240 memset (wait, 0, sizeof (struct wait_data));
3242 * The other threads could be in an arbitrary state at this point, i.e.
3243 * they could be starting up, shutting down etc. This means that there could be
3244 * threads which are not even in the threads hash table yet.
3248 * First we set a barrier which will be checked by all threads before they
3249 * are added to the threads hash table, and they will exit if the flag is set.
3250 * This ensures that no threads could be added to the hash later.
3251 * We will use shutting_down as the barrier for now.
3253 g_assert (shutting_down);
3256 * We make multiple calls to WaitForMultipleObjects since:
3257 * - we can only wait for MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS threads
3258 * - some threads could exit without becoming suspended
3263 * Make a copy of the hashtable since we can't do anything with
3264 * threads while threads_mutex is held.
3267 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3268 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3269 mono_threads_lock ();
3270 mono_g_hash_table_foreach (threads, collect_threads_for_suspend, wait);
3271 mono_threads_unlock ();
3274 /* Get the suspended events that we'll be waiting for */
3275 for (i = 0; i < wait->num; ++i) {
3276 MonoInternalThread *thread = wait->threads [i];
3278 if (mono_native_thread_id_equals (thread_get_tid (thread), self)
3279 || mono_gc_is_finalizer_internal_thread (thread)
3280 || (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE)
3282 //mono_threads_close_thread_handle (wait->handles [i]);
3283 wait->threads [i] = NULL; /* ignore this thread in next loop */
3287 LOCK_THREAD (thread);
3289 if ((thread->state & ThreadState_Suspended) != 0 ||
3290 (thread->state & ThreadState_StopRequested) != 0 ||
3291 (thread->state & ThreadState_Stopped) != 0) {
3292 UNLOCK_THREAD (thread);
3293 mono_threads_close_thread_handle (wait->handles [i]);
3294 wait->threads [i] = NULL; /* ignore this thread in next loop */
3300 /* Convert abort requests into suspend requests */
3301 if ((thread->state & ThreadState_AbortRequested) != 0)
3302 thread->state &= ~ThreadState_AbortRequested;
3304 thread->state |= ThreadState_SuspendRequested;
3306 /* Signal the thread to suspend + calls UNLOCK_THREAD (thread) */
3307 async_suspend_internal (thread, TRUE);
3309 if (eventidx <= 0) {
3311 * If there are threads which are starting up, we wait until they
3312 * are suspended when they try to register in the threads hash.
3313 * This is guaranteed to finish, since the threads which can create new
3314 * threads get suspended after a while.
3315 * FIXME: The finalizer thread can still create new threads.
3317 mono_threads_lock ();
3318 if (threads_starting_up)
3319 starting = mono_g_hash_table_size (threads_starting_up) > 0;
3322 mono_threads_unlock ();
3324 mono_thread_info_sleep (100, NULL);
3332 MonoInternalThread *thread;
3333 MonoStackFrameInfo *frames;
3334 int nframes, max_frames;
3335 int nthreads, max_threads;
3336 MonoInternalThread **threads;
3337 } ThreadDumpUserData;
3339 static gboolean thread_dump_requested;
3341 /* This needs to be async safe */
3343 collect_frame (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
3345 ThreadDumpUserData *ud = (ThreadDumpUserData *)data;
3347 if (ud->nframes < ud->max_frames) {
3348 memcpy (&ud->frames [ud->nframes], frame, sizeof (MonoStackFrameInfo));
3355 /* This needs to be async safe */
3356 static SuspendThreadResult
3357 get_thread_dump (MonoThreadInfo *info, gpointer ud)
3359 ThreadDumpUserData *user_data = (ThreadDumpUserData *)ud;
3360 MonoInternalThread *thread = user_data->thread;
3363 /* This no longer works with remote unwinding */
3364 g_string_append_printf (text, " tid=0x%p this=0x%p ", (gpointer)(gsize)thread->tid, thread);
3365 mono_thread_internal_describe (thread, text);
3366 g_string_append (text, "\n");
3369 if (thread == mono_thread_internal_current ())
3370 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (collect_frame, NULL, MONO_UNWIND_SIGNAL_SAFE, ud);
3372 mono_get_eh_callbacks ()->mono_walk_stack_with_state (collect_frame, mono_thread_info_get_suspend_state (info), MONO_UNWIND_SIGNAL_SAFE, ud);
3374 return MonoResumeThread;
3378 int nthreads, max_threads;
3379 MonoInternalThread **threads;
3380 } CollectThreadsUserData;
3383 collect_thread (gpointer key, gpointer value, gpointer user)
3385 CollectThreadsUserData *ud = (CollectThreadsUserData *)user;
3386 MonoInternalThread *thread = (MonoInternalThread *)value;
3388 if (ud->nthreads < ud->max_threads)
3389 ud->threads [ud->nthreads ++] = thread;
3393 * Collect running threads into the THREADS array.
3394 * THREADS should be an array allocated on the stack.
3397 collect_threads (MonoInternalThread **thread_array, int max_threads)
3399 CollectThreadsUserData ud;
3401 memset (&ud, 0, sizeof (ud));
3402 /* This array contains refs, but its on the stack, so its ok */
3403 ud.threads = thread_array;
3404 ud.max_threads = max_threads;
3406 mono_threads_lock ();
3407 mono_g_hash_table_foreach (threads, collect_thread, &ud);
3408 mono_threads_unlock ();
3414 dump_thread (MonoInternalThread *thread, ThreadDumpUserData *ud)
3416 GString* text = g_string_new (0);
3418 GError *error = NULL;
3421 ud->thread = thread;
3424 /* Collect frames for the thread */
3425 if (thread == mono_thread_internal_current ()) {
3426 get_thread_dump (mono_thread_info_current (), ud);
3428 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), FALSE, get_thread_dump, ud);
3432 * Do all the non async-safe work outside of get_thread_dump.
3435 name = g_utf16_to_utf8 (thread->name, thread->name_len, NULL, NULL, &error);
3437 g_string_append_printf (text, "\n\"%s\"", name);
3440 else if (thread->threadpool_thread) {
3441 g_string_append (text, "\n\"<threadpool thread>\"");
3443 g_string_append (text, "\n\"<unnamed thread>\"");
3446 for (i = 0; i < ud->nframes; ++i) {
3447 MonoStackFrameInfo *frame = &ud->frames [i];
3448 MonoMethod *method = NULL;
3450 if (frame->type == FRAME_TYPE_MANAGED)
3451 method = mono_jit_info_get_method (frame->ji);
3454 gchar *location = mono_debug_print_stack_frame (method, frame->native_offset, frame->domain);
3455 g_string_append_printf (text, " %s\n", location);
3458 g_string_append_printf (text, " at <unknown> <0x%05x>\n", frame->native_offset);
3462 fprintf (stdout, "%s", text->str);
3464 #if PLATFORM_WIN32 && TARGET_WIN32 && _DEBUG
3465 OutputDebugStringA(text->str);
3468 g_string_free (text, TRUE);
3473 mono_threads_perform_thread_dump (void)
3475 ThreadDumpUserData ud;
3476 MonoInternalThread *thread_array [128];
3477 int tindex, nthreads;
3479 if (!thread_dump_requested)
3482 printf ("Full thread dump:\n");
3484 /* Make a copy of the threads hash to avoid doing work inside threads_lock () */
3485 nthreads = collect_threads (thread_array, 128);
3487 memset (&ud, 0, sizeof (ud));
3488 ud.frames = g_new0 (MonoStackFrameInfo, 256);
3489 ud.max_frames = 256;
3491 for (tindex = 0; tindex < nthreads; ++tindex)
3492 dump_thread (thread_array [tindex], &ud);
3496 thread_dump_requested = FALSE;
3499 /* Obtain the thread dump of all threads */
3501 mono_threads_get_thread_dump (MonoArray **out_threads, MonoArray **out_stack_frames, MonoError *error)
3504 ThreadDumpUserData ud;
3505 MonoInternalThread *thread_array [128];
3506 MonoDomain *domain = mono_domain_get ();
3507 MonoDebugSourceLocation *location;
3508 int tindex, nthreads;
3510 mono_error_init (error);
3512 *out_threads = NULL;
3513 *out_stack_frames = NULL;
3515 /* Make a copy of the threads hash to avoid doing work inside threads_lock () */
3516 nthreads = collect_threads (thread_array, 128);
3518 memset (&ud, 0, sizeof (ud));
3519 ud.frames = g_new0 (MonoStackFrameInfo, 256);
3520 ud.max_frames = 256;
3522 *out_threads = mono_array_new_checked (domain, mono_defaults.thread_class, nthreads, error);
3525 *out_stack_frames = mono_array_new_checked (domain, mono_defaults.array_class, nthreads, error);
3529 for (tindex = 0; tindex < nthreads; ++tindex) {
3530 MonoInternalThread *thread = thread_array [tindex];
3531 MonoArray *thread_frames;
3537 /* Collect frames for the thread */
3538 if (thread == mono_thread_internal_current ()) {
3539 get_thread_dump (mono_thread_info_current (), &ud);
3541 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), FALSE, get_thread_dump, &ud);
3544 mono_array_setref_fast (*out_threads, tindex, mono_thread_current_for_thread (thread));
3546 thread_frames = mono_array_new_checked (domain, mono_defaults.stack_frame_class, ud.nframes, error);
3549 mono_array_setref_fast (*out_stack_frames, tindex, thread_frames);
3551 for (i = 0; i < ud.nframes; ++i) {
3552 MonoStackFrameInfo *frame = &ud.frames [i];
3553 MonoMethod *method = NULL;
3554 MonoStackFrame *sf = (MonoStackFrame *)mono_object_new_checked (domain, mono_defaults.stack_frame_class, error);
3558 sf->native_offset = frame->native_offset;
3560 if (frame->type == FRAME_TYPE_MANAGED)
3561 method = mono_jit_info_get_method (frame->ji);
3564 sf->method_address = (gsize) frame->ji->code_start;
3566 MonoReflectionMethod *rm = mono_method_get_object_checked (domain, method, NULL, error);
3569 MONO_OBJECT_SETREF (sf, method, rm);
3571 location = mono_debug_lookup_source_location (method, frame->native_offset, domain);
3573 sf->il_offset = location->il_offset;
3575 if (location && location->source_file) {
3576 MONO_OBJECT_SETREF (sf, filename, mono_string_new (domain, location->source_file));
3577 sf->line = location->row;
3578 sf->column = location->column;
3580 mono_debug_free_source_location (location);
3585 mono_array_setref (thread_frames, i, sf);
3591 return is_ok (error);
3595 * mono_threads_request_thread_dump:
3597 * Ask all threads except the current to print their stacktrace to stdout.
3600 mono_threads_request_thread_dump (void)
3602 /*The new thread dump code runs out of the finalizer thread. */
3603 thread_dump_requested = TRUE;
3604 mono_gc_finalize_notify ();
3609 gint allocated; /* +1 so that refs [allocated] == NULL */
3613 typedef struct ref_stack RefStack;
3616 ref_stack_new (gint initial_size)
3620 initial_size = MAX (initial_size, 16) + 1;
3621 rs = g_new0 (RefStack, 1);
3622 rs->refs = g_new0 (gpointer, initial_size);
3623 rs->allocated = initial_size;
3628 ref_stack_destroy (gpointer ptr)
3630 RefStack *rs = (RefStack *)ptr;
3639 ref_stack_push (RefStack *rs, gpointer ptr)
3641 g_assert (rs != NULL);
3643 if (rs->bottom >= rs->allocated) {
3644 rs->refs = (void **)g_realloc (rs->refs, rs->allocated * 2 * sizeof (gpointer) + 1);
3645 rs->allocated <<= 1;
3646 rs->refs [rs->allocated] = NULL;
3648 rs->refs [rs->bottom++] = ptr;
3652 ref_stack_pop (RefStack *rs)
3654 if (rs == NULL || rs->bottom == 0)
3658 rs->refs [rs->bottom] = NULL;
3662 ref_stack_find (RefStack *rs, gpointer ptr)
3669 for (refs = rs->refs; refs && *refs; refs++) {
3677 * mono_thread_push_appdomain_ref:
3679 * Register that the current thread may have references to objects in domain
3680 * @domain on its stack. Each call to this function should be paired with a
3681 * call to pop_appdomain_ref.
3684 mono_thread_push_appdomain_ref (MonoDomain *domain)
3686 MonoInternalThread *thread = mono_thread_internal_current ();
3689 /* printf ("PUSH REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, domain->friendly_name); */
3690 SPIN_LOCK (thread->lock_thread_id);
3691 if (thread->appdomain_refs == NULL)
3692 thread->appdomain_refs = ref_stack_new (16);
3693 ref_stack_push ((RefStack *)thread->appdomain_refs, domain);
3694 SPIN_UNLOCK (thread->lock_thread_id);
3699 mono_thread_pop_appdomain_ref (void)
3701 MonoInternalThread *thread = mono_thread_internal_current ();
3704 /* printf ("POP REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, ((MonoDomain*)(thread->appdomain_refs->data))->friendly_name); */
3705 SPIN_LOCK (thread->lock_thread_id);
3706 ref_stack_pop ((RefStack *)thread->appdomain_refs);
3707 SPIN_UNLOCK (thread->lock_thread_id);
3712 mono_thread_internal_has_appdomain_ref (MonoInternalThread *thread, MonoDomain *domain)
3715 SPIN_LOCK (thread->lock_thread_id);
3716 res = ref_stack_find ((RefStack *)thread->appdomain_refs, domain);
3717 SPIN_UNLOCK (thread->lock_thread_id);
3722 mono_thread_has_appdomain_ref (MonoThread *thread, MonoDomain *domain)
3724 return mono_thread_internal_has_appdomain_ref (thread->internal_thread, domain);
3727 typedef struct abort_appdomain_data {
3728 struct wait_data wait;
3730 } abort_appdomain_data;
3733 collect_appdomain_thread (gpointer key, gpointer value, gpointer user_data)
3735 MonoInternalThread *thread = (MonoInternalThread*)value;
3736 abort_appdomain_data *data = (abort_appdomain_data*)user_data;
3737 MonoDomain *domain = data->domain;
3739 if (mono_thread_internal_has_appdomain_ref (thread, domain)) {
3740 /* printf ("ABORTING THREAD %p BECAUSE IT REFERENCES DOMAIN %s.\n", thread->tid, domain->friendly_name); */
3742 if(data->wait.num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS) {
3743 data->wait.handles [data->wait.num] = mono_threads_open_thread_handle (thread->handle);
3744 data->wait.threads [data->wait.num] = thread;
3747 /* Just ignore the rest, we can't do anything with
3755 * mono_threads_abort_appdomain_threads:
3757 * Abort threads which has references to the given appdomain.
3760 mono_threads_abort_appdomain_threads (MonoDomain *domain, int timeout)
3762 #ifdef __native_client__
3766 abort_appdomain_data user_data;
3768 int orig_timeout = timeout;
3771 THREAD_DEBUG (g_message ("%s: starting abort", __func__));
3773 start_time = mono_msec_ticks ();
3775 mono_threads_lock ();
3777 user_data.domain = domain;
3778 user_data.wait.num = 0;
3779 /* This shouldn't take any locks */
3780 mono_g_hash_table_foreach (threads, collect_appdomain_thread, &user_data);
3781 mono_threads_unlock ();
3783 if (user_data.wait.num > 0) {
3784 /* Abort the threads outside the threads lock */
3785 for (i = 0; i < user_data.wait.num; ++i)
3786 mono_thread_internal_abort (user_data.wait.threads [i]);
3789 * We should wait for the threads either to abort, or to leave the
3790 * domain. We can't do the latter, so we wait with a timeout.
3792 wait_for_tids (&user_data.wait, 100);
3795 /* Update remaining time */
3796 timeout -= mono_msec_ticks () - start_time;
3797 start_time = mono_msec_ticks ();
3799 if (orig_timeout != -1 && timeout < 0)
3802 while (user_data.wait.num > 0);
3804 THREAD_DEBUG (g_message ("%s: abort done", __func__));
3810 clear_cached_culture (gpointer key, gpointer value, gpointer user_data)
3812 MonoInternalThread *thread = (MonoInternalThread*)value;
3813 MonoDomain *domain = (MonoDomain*)user_data;
3816 /* No locking needed here */
3817 /* FIXME: why no locking? writes to the cache are protected with synch_cs above */
3819 if (thread->cached_culture_info) {
3820 for (i = 0; i < NUM_CACHED_CULTURES * 2; ++i) {
3821 MonoObject *obj = mono_array_get (thread->cached_culture_info, MonoObject*, i);
3822 if (obj && obj->vtable->domain == domain)
3823 mono_array_set (thread->cached_culture_info, MonoObject*, i, NULL);
3829 * mono_threads_clear_cached_culture:
3831 * Clear the cached_current_culture from all threads if it is in the
3835 mono_threads_clear_cached_culture (MonoDomain *domain)
3837 mono_threads_lock ();
3838 mono_g_hash_table_foreach (threads, clear_cached_culture, domain);
3839 mono_threads_unlock ();
3843 * mono_thread_get_undeniable_exception:
3845 * Return an exception which needs to be raised when leaving a catch clause.
3846 * This is used for undeniable exception propagation.
3849 mono_thread_get_undeniable_exception (void)
3851 MonoInternalThread *thread = mono_thread_internal_current ();
3853 if (thread && thread->abort_exc && !is_running_protected_wrapper ()) {
3855 * FIXME: Clear the abort exception and return an AppDomainUnloaded
3856 * exception if the thread no longer references a dying appdomain.
3858 thread->abort_exc->trace_ips = NULL;
3859 thread->abort_exc->stack_trace = NULL;
3860 return thread->abort_exc;
3866 #if MONO_SMALL_CONFIG
3867 #define NUM_STATIC_DATA_IDX 4
3868 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
3872 #define NUM_STATIC_DATA_IDX 8
3873 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
3874 1024, 4096, 16384, 65536, 262144, 1048576, 4194304, 16777216
3878 static MonoBitSet *thread_reference_bitmaps [NUM_STATIC_DATA_IDX];
3879 static MonoBitSet *context_reference_bitmaps [NUM_STATIC_DATA_IDX];
3882 mark_slots (void *addr, MonoBitSet **bitmaps, MonoGCMarkFunc mark_func, void *gc_data)
3884 gpointer *static_data = (gpointer *)addr;
3886 for (int i = 0; i < NUM_STATIC_DATA_IDX; ++i) {
3887 void **ptr = (void **)static_data [i];
3892 MONO_BITSET_FOREACH (bitmaps [i], idx, {
3893 void **p = ptr + idx;
3896 mark_func ((MonoObject**)p, gc_data);
3902 mark_tls_slots (void *addr, MonoGCMarkFunc mark_func, void *gc_data)
3904 mark_slots (addr, thread_reference_bitmaps, mark_func, gc_data);
3908 mark_ctx_slots (void *addr, MonoGCMarkFunc mark_func, void *gc_data)
3910 mark_slots (addr, context_reference_bitmaps, mark_func, gc_data);
3914 * mono_alloc_static_data
3916 * Allocate memory blocks for storing threads or context static data
3919 mono_alloc_static_data (gpointer **static_data_ptr, guint32 offset, gboolean threadlocal)
3921 guint idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
3924 gpointer* static_data = *static_data_ptr;
3926 static MonoGCDescriptor tls_desc = MONO_GC_DESCRIPTOR_NULL;
3927 static MonoGCDescriptor ctx_desc = MONO_GC_DESCRIPTOR_NULL;
3929 if (mono_gc_user_markers_supported ()) {
3930 if (tls_desc == MONO_GC_DESCRIPTOR_NULL)
3931 tls_desc = mono_gc_make_root_descr_user (mark_tls_slots);
3933 if (ctx_desc == MONO_GC_DESCRIPTOR_NULL)
3934 ctx_desc = mono_gc_make_root_descr_user (mark_ctx_slots);
3937 static_data = (void **)mono_gc_alloc_fixed (static_data_size [0], threadlocal ? tls_desc : ctx_desc,
3938 threadlocal ? MONO_ROOT_SOURCE_THREAD_STATIC : MONO_ROOT_SOURCE_CONTEXT_STATIC,
3939 threadlocal ? "managed thread-static variables" : "managed context-static variables");
3940 *static_data_ptr = static_data;
3941 static_data [0] = static_data;
3944 for (i = 1; i <= idx; ++i) {
3945 if (static_data [i])
3948 if (mono_gc_user_markers_supported ())
3949 static_data [i] = g_malloc0 (static_data_size [i]);
3951 static_data [i] = mono_gc_alloc_fixed (static_data_size [i], MONO_GC_DESCRIPTOR_NULL,
3952 threadlocal ? MONO_ROOT_SOURCE_THREAD_STATIC : MONO_ROOT_SOURCE_CONTEXT_STATIC,
3953 threadlocal ? "managed thread-static variables" : "managed context-static variables");
3958 mono_free_static_data (gpointer* static_data)
3961 for (i = 1; i < NUM_STATIC_DATA_IDX; ++i) {
3962 gpointer p = static_data [i];
3966 * At this point, the static data pointer array is still registered with the
3967 * GC, so must ensure that mark_tls_slots() will not encounter any invalid
3968 * data. Freeing the individual arrays without first nulling their slots
3969 * would make it possible for mark_tls/ctx_slots() to encounter a pointer to
3970 * such an already freed array. See bug #13813.
3972 static_data [i] = NULL;
3973 mono_memory_write_barrier ();
3974 if (mono_gc_user_markers_supported ())
3977 mono_gc_free_fixed (p);
3979 mono_gc_free_fixed (static_data);
3983 * mono_init_static_data_info
3985 * Initializes static data counters
3987 static void mono_init_static_data_info (StaticDataInfo *static_data)
3989 static_data->idx = 0;
3990 static_data->offset = 0;
3991 static_data->freelist = NULL;
3995 * mono_alloc_static_data_slot
3997 * Generates an offset for static data. static_data contains the counters
3998 * used to generate it.
4001 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align)
4003 if (!static_data->idx && !static_data->offset) {
4005 * we use the first chunk of the first allocation also as
4006 * an array for the rest of the data
4008 static_data->offset = sizeof (gpointer) * NUM_STATIC_DATA_IDX;
4010 static_data->offset += align - 1;
4011 static_data->offset &= ~(align - 1);
4012 if (static_data->offset + size >= static_data_size [static_data->idx]) {
4013 static_data->idx ++;
4014 g_assert (size <= static_data_size [static_data->idx]);
4015 g_assert (static_data->idx < NUM_STATIC_DATA_IDX);
4016 static_data->offset = 0;
4018 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (static_data->idx, static_data->offset, 0);
4019 static_data->offset += size;
4024 * LOCKING: requires that threads_mutex is held
4027 context_adjust_static_data (MonoAppContext *ctx)
4029 if (context_static_info.offset || context_static_info.idx > 0) {
4030 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (context_static_info.idx, context_static_info.offset, 0);
4031 mono_alloc_static_data (&ctx->static_data, offset, FALSE);
4032 ctx->data->static_data = ctx->static_data;
4037 * LOCKING: requires that threads_mutex is held
4040 alloc_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
4042 MonoInternalThread *thread = (MonoInternalThread *)value;
4043 guint32 offset = GPOINTER_TO_UINT (user);
4045 mono_alloc_static_data (&(thread->static_data), offset, TRUE);
4049 * LOCKING: requires that threads_mutex is held
4052 alloc_context_static_data_helper (gpointer key, gpointer value, gpointer user)
4054 MonoAppContext *ctx = (MonoAppContext *) mono_gchandle_get_target (GPOINTER_TO_INT (key));
4059 guint32 offset = GPOINTER_TO_UINT (user);
4060 mono_alloc_static_data (&ctx->static_data, offset, FALSE);
4061 ctx->data->static_data = ctx->static_data;
4064 static StaticDataFreeList*
4065 search_slot_in_freelist (StaticDataInfo *static_data, guint32 size, guint32 align)
4067 StaticDataFreeList* prev = NULL;
4068 StaticDataFreeList* tmp = static_data->freelist;
4070 if (tmp->size == size) {
4072 prev->next = tmp->next;
4074 static_data->freelist = tmp->next;
4083 #if SIZEOF_VOID_P == 4
4090 update_reference_bitmap (MonoBitSet **sets, guint32 offset, uintptr_t *bitmap, int numbits)
4092 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4094 sets [idx] = mono_bitset_new (static_data_size [idx] / sizeof (uintptr_t), 0);
4095 MonoBitSet *rb = sets [idx];
4096 offset = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
4097 offset /= sizeof (uintptr_t);
4098 /* offset is now the bitmap offset */
4099 for (int i = 0; i < numbits; ++i) {
4100 if (bitmap [i / sizeof (uintptr_t)] & (ONE_P << (i & (sizeof (uintptr_t) * 8 -1))))
4101 mono_bitset_set_fast (rb, offset + i);
4106 clear_reference_bitmap (MonoBitSet **sets, guint32 offset, guint32 size)
4108 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4109 MonoBitSet *rb = sets [idx];
4110 offset = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
4111 offset /= sizeof (uintptr_t);
4112 /* offset is now the bitmap offset */
4113 for (int i = 0; i < size / sizeof (uintptr_t); i++)
4114 mono_bitset_clear_fast (rb, offset + i);
4118 mono_alloc_special_static_data (guint32 static_type, guint32 size, guint32 align, uintptr_t *bitmap, int numbits)
4120 g_assert (static_type == SPECIAL_STATIC_THREAD || static_type == SPECIAL_STATIC_CONTEXT);
4122 StaticDataInfo *info;
4125 if (static_type == SPECIAL_STATIC_THREAD) {
4126 info = &thread_static_info;
4127 sets = thread_reference_bitmaps;
4129 info = &context_static_info;
4130 sets = context_reference_bitmaps;
4133 mono_threads_lock ();
4135 StaticDataFreeList *item = search_slot_in_freelist (info, size, align);
4139 offset = item->offset;
4142 offset = mono_alloc_static_data_slot (info, size, align);
4145 update_reference_bitmap (sets, offset, bitmap, numbits);
4147 if (static_type == SPECIAL_STATIC_THREAD) {
4148 /* This can be called during startup */
4149 if (threads != NULL)
4150 mono_g_hash_table_foreach (threads, alloc_thread_static_data_helper, GUINT_TO_POINTER (offset));
4152 if (contexts != NULL)
4153 g_hash_table_foreach (contexts, alloc_context_static_data_helper, GUINT_TO_POINTER (offset));
4155 ACCESS_SPECIAL_STATIC_OFFSET (offset, type) = SPECIAL_STATIC_OFFSET_TYPE_CONTEXT;
4158 mono_threads_unlock ();
4164 mono_get_special_static_data_for_thread (MonoInternalThread *thread, guint32 offset)
4166 guint32 static_type = ACCESS_SPECIAL_STATIC_OFFSET (offset, type);
4168 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4169 return get_thread_static_data (thread, offset);
4171 return get_context_static_data (thread->current_appcontext, offset);
4176 mono_get_special_static_data (guint32 offset)
4178 return mono_get_special_static_data_for_thread (mono_thread_internal_current (), offset);
4187 * LOCKING: requires that threads_mutex is held
4190 free_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
4192 MonoInternalThread *thread = (MonoInternalThread *)value;
4193 OffsetSize *data = (OffsetSize *)user;
4194 int idx = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, index);
4195 int off = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, offset);
4198 if (!thread->static_data || !thread->static_data [idx])
4200 ptr = ((char*) thread->static_data [idx]) + off;
4201 mono_gc_bzero_atomic (ptr, data->size);
4205 * LOCKING: requires that threads_mutex is held
4208 free_context_static_data_helper (gpointer key, gpointer value, gpointer user)
4210 MonoAppContext *ctx = (MonoAppContext *) mono_gchandle_get_target (GPOINTER_TO_INT (key));
4215 OffsetSize *data = (OffsetSize *)user;
4216 int idx = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, index);
4217 int off = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, offset);
4220 if (!ctx->static_data || !ctx->static_data [idx])
4223 ptr = ((char*) ctx->static_data [idx]) + off;
4224 mono_gc_bzero_atomic (ptr, data->size);
4228 do_free_special_slot (guint32 offset, guint32 size)
4230 guint32 static_type = ACCESS_SPECIAL_STATIC_OFFSET (offset, type);
4232 StaticDataInfo *info;
4234 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4235 info = &thread_static_info;
4236 sets = thread_reference_bitmaps;
4238 info = &context_static_info;
4239 sets = context_reference_bitmaps;
4242 guint32 data_offset = offset;
4243 ACCESS_SPECIAL_STATIC_OFFSET (data_offset, type) = 0;
4244 OffsetSize data = { data_offset, size };
4246 clear_reference_bitmap (sets, data.offset, data.size);
4248 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4249 if (threads != NULL)
4250 mono_g_hash_table_foreach (threads, free_thread_static_data_helper, &data);
4252 if (contexts != NULL)
4253 g_hash_table_foreach (contexts, free_context_static_data_helper, &data);
4256 if (!mono_runtime_is_shutting_down ()) {
4257 StaticDataFreeList *item = g_new0 (StaticDataFreeList, 1);
4259 item->offset = offset;
4262 item->next = info->freelist;
4263 info->freelist = item;
4268 do_free_special (gpointer key, gpointer value, gpointer data)
4270 MonoClassField *field = (MonoClassField *)key;
4271 guint32 offset = GPOINTER_TO_UINT (value);
4274 size = mono_type_size (field->type, &align);
4275 do_free_special_slot (offset, size);
4279 mono_alloc_special_static_data_free (GHashTable *special_static_fields)
4281 mono_threads_lock ();
4283 g_hash_table_foreach (special_static_fields, do_free_special, NULL);
4285 mono_threads_unlock ();
4289 static void CALLBACK dummy_apc (ULONG_PTR param)
4295 * mono_thread_execute_interruption
4297 * Performs the operation that the requested thread state requires (abort,
4300 static MonoException*
4301 mono_thread_execute_interruption (void)
4303 MonoInternalThread *thread = mono_thread_internal_current ();
4304 MonoThread *sys_thread = mono_thread_current ();
4306 LOCK_THREAD (thread);
4308 /* MonoThread::interruption_requested can only be changed with atomics */
4309 if (InterlockedCompareExchange (&thread->interruption_requested, FALSE, TRUE)) {
4310 /* this will consume pending APC calls */
4312 WaitForSingleObjectEx (GetCurrentThread(), 0, TRUE);
4314 InterlockedDecrement (&thread_interruption_requested);
4316 /* Clear the interrupted flag of the thread so it can wait again */
4317 mono_thread_info_clear_self_interrupt ();
4320 /* If there's a pending exception and an AbortRequested, the pending exception takes precedence */
4321 if (sys_thread->pending_exception) {
4324 exc = sys_thread->pending_exception;
4325 sys_thread->pending_exception = NULL;
4327 UNLOCK_THREAD (thread);
4329 } else if ((thread->state & ThreadState_AbortRequested) != 0) {
4330 UNLOCK_THREAD (thread);
4331 g_assert (sys_thread->pending_exception == NULL);
4332 if (thread->abort_exc == NULL) {
4334 * This might be racy, but it has to be called outside the lock
4335 * since it calls managed code.
4337 MONO_OBJECT_SETREF (thread, abort_exc, mono_get_exception_thread_abort ());
4339 return thread->abort_exc;
4341 else if ((thread->state & ThreadState_SuspendRequested) != 0) {
4342 /* calls UNLOCK_THREAD (thread) */
4343 self_suspend_internal ();
4346 else if ((thread->state & ThreadState_StopRequested) != 0) {
4347 /* FIXME: do this through the JIT? */
4349 UNLOCK_THREAD (thread);
4351 mono_thread_exit ();
4353 } else if (thread->thread_interrupt_requested) {
4355 thread->thread_interrupt_requested = FALSE;
4356 UNLOCK_THREAD (thread);
4358 return(mono_get_exception_thread_interrupted ());
4361 UNLOCK_THREAD (thread);
4367 * mono_thread_request_interruption
4369 * A signal handler can call this method to request the interruption of a
4370 * thread. The result of the interruption will depend on the current state of
4371 * the thread. If the result is an exception that needs to be throw, it is
4372 * provided as return value.
4375 mono_thread_request_interruption (gboolean running_managed)
4377 MonoInternalThread *thread = mono_thread_internal_current ();
4379 /* The thread may already be stopping */
4384 if (thread->interrupt_on_stop &&
4385 thread->state & ThreadState_StopRequested &&
4386 thread->state & ThreadState_Background)
4389 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4391 InterlockedIncrement (&thread_interruption_requested);
4393 if (!running_managed || is_running_protected_wrapper ()) {
4394 /* Can't stop while in unmanaged code. Increase the global interruption
4395 request count. When exiting the unmanaged method the count will be
4396 checked and the thread will be interrupted. */
4398 /* this will awake the thread if it is in WaitForSingleObject
4400 /* Our implementation of this function ignores the func argument */
4402 QueueUserAPC ((PAPCFUNC)dummy_apc, thread->native_handle, (ULONG_PTR)NULL);
4404 mono_thread_info_self_interrupt ();
4409 return mono_thread_execute_interruption ();
4413 /*This function should be called by a thread after it has exited all of
4414 * its handle blocks at interruption time.*/
4416 mono_thread_resume_interruption (void)
4418 MonoInternalThread *thread = mono_thread_internal_current ();
4419 gboolean still_aborting;
4421 /* The thread may already be stopping */
4425 LOCK_THREAD (thread);
4426 still_aborting = (thread->state & (ThreadState_AbortRequested|ThreadState_StopRequested)) != 0;
4427 UNLOCK_THREAD (thread);
4429 /*This can happen if the protected block called Thread::ResetAbort*/
4430 if (!still_aborting)
4433 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4435 InterlockedIncrement (&thread_interruption_requested);
4437 mono_thread_info_self_interrupt ();
4439 return mono_thread_execute_interruption ();
4442 gboolean mono_thread_interruption_requested ()
4444 if (thread_interruption_requested) {
4445 MonoInternalThread *thread = mono_thread_internal_current ();
4446 /* The thread may already be stopping */
4448 return (thread->interruption_requested);
4453 static MonoException*
4454 mono_thread_interruption_checkpoint_request (gboolean bypass_abort_protection)
4456 MonoInternalThread *thread = mono_thread_internal_current ();
4458 /* The thread may already be stopping */
4462 if (thread->interruption_requested && (bypass_abort_protection || !is_running_protected_wrapper ())) {
4463 MonoException* exc = mono_thread_execute_interruption ();
4471 * Performs the interruption of the current thread, if one has been requested,
4472 * and the thread is not running a protected wrapper.
4473 * Return the exception which needs to be thrown, if any.
4476 mono_thread_interruption_checkpoint (void)
4478 return mono_thread_interruption_checkpoint_request (FALSE);
4482 * Performs the interruption of the current thread, if one has been requested.
4483 * Return the exception which needs to be thrown, if any.
4486 mono_thread_force_interruption_checkpoint_noraise (void)
4488 return mono_thread_interruption_checkpoint_request (TRUE);
4492 * mono_set_pending_exception:
4494 * Set the pending exception of the current thread to EXC.
4495 * The exception will be thrown when execution returns to managed code.
4498 mono_set_pending_exception (MonoException *exc)
4500 MonoThread *thread = mono_thread_current ();
4502 /* The thread may already be stopping */
4506 MONO_OBJECT_SETREF (thread, pending_exception, exc);
4508 mono_thread_request_interruption (FALSE);
4512 * mono_thread_interruption_request_flag:
4514 * Returns the address of a flag that will be non-zero if an interruption has
4515 * been requested for a thread. The thread to interrupt may not be the current
4516 * thread, so an additional call to mono_thread_interruption_requested() or
4517 * mono_thread_interruption_checkpoint() is allways needed if the flag is not
4520 gint32* mono_thread_interruption_request_flag ()
4522 return &thread_interruption_requested;
4526 mono_thread_init_apartment_state (void)
4529 MonoInternalThread* thread = mono_thread_internal_current ();
4531 /* Positive return value indicates success, either
4532 * S_OK if this is first CoInitialize call, or
4533 * S_FALSE if CoInitialize already called, but with same
4534 * threading model. A negative value indicates failure,
4535 * probably due to trying to change the threading model.
4537 if (CoInitializeEx(NULL, (thread->apartment_state == ThreadApartmentState_STA)
4538 ? COINIT_APARTMENTTHREADED
4539 : COINIT_MULTITHREADED) < 0) {
4540 thread->apartment_state = ThreadApartmentState_Unknown;
4546 mono_thread_cleanup_apartment_state (void)
4549 MonoInternalThread* thread = mono_thread_internal_current ();
4551 if (thread && thread->apartment_state != ThreadApartmentState_Unknown) {
4558 mono_thread_set_state (MonoInternalThread *thread, MonoThreadState state)
4560 LOCK_THREAD (thread);
4561 thread->state |= state;
4562 UNLOCK_THREAD (thread);
4566 * mono_thread_test_and_set_state:
4568 * Test if current state of @thread include @test. If it does not, OR @set into the state.
4570 * Returns TRUE is @set was OR'd in.
4573 mono_thread_test_and_set_state (MonoInternalThread *thread, MonoThreadState test, MonoThreadState set)
4575 LOCK_THREAD (thread);
4577 if ((thread->state & test) != 0) {
4578 UNLOCK_THREAD (thread);
4582 thread->state |= set;
4583 UNLOCK_THREAD (thread);
4589 mono_thread_clr_state (MonoInternalThread *thread, MonoThreadState state)
4591 LOCK_THREAD (thread);
4592 thread->state &= ~state;
4593 UNLOCK_THREAD (thread);
4597 mono_thread_test_state (MonoInternalThread *thread, MonoThreadState test)
4599 gboolean ret = FALSE;
4601 LOCK_THREAD (thread);
4603 if ((thread->state & test) != 0) {
4607 UNLOCK_THREAD (thread);
4612 static gboolean has_tls_get = FALSE;
4615 mono_runtime_set_has_tls_get (gboolean val)
4621 mono_runtime_has_tls_get (void)
4627 self_interrupt_thread (void *_unused)
4629 MonoThreadInfo *info = mono_thread_info_current ();
4630 MonoException *exc = mono_thread_execute_interruption ();
4631 if (exc) /*We must use _with_context since we didn't trampoline into the runtime*/
4632 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. */
4633 g_assert_not_reached (); /*this MUST not happen since we can't resume from an async call*/
4637 mono_jit_info_match (MonoJitInfo *ji, gpointer ip)
4641 return ji->code_start <= ip && (char*)ip < (char*)ji->code_start + ji->code_size;
4645 last_managed (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
4647 MonoJitInfo **dest = (MonoJitInfo **)data;
4653 mono_thread_info_get_last_managed (MonoThreadInfo *info)
4655 MonoJitInfo *ji = NULL;
4660 * The suspended thread might be holding runtime locks. Make sure we don't try taking
4661 * any runtime locks while unwinding. In coop case we shouldn't safepoint in regions
4662 * where we hold runtime locks.
4664 if (!mono_threads_is_coop_enabled ())
4665 mono_thread_info_set_is_async_context (TRUE);
4666 mono_get_eh_callbacks ()->mono_walk_stack_with_state (last_managed, mono_thread_info_get_suspend_state (info), MONO_UNWIND_SIGNAL_SAFE, &ji);
4667 if (!mono_threads_is_coop_enabled ())
4668 mono_thread_info_set_is_async_context (FALSE);
4673 MonoInternalThread *thread;
4674 gboolean install_async_abort;
4675 MonoThreadInfoInterruptToken *interrupt_token;
4678 static SuspendThreadResult
4679 async_abort_critical (MonoThreadInfo *info, gpointer ud)
4681 AbortThreadData *data = (AbortThreadData *)ud;
4682 MonoInternalThread *thread = data->thread;
4683 MonoJitInfo *ji = NULL;
4684 gboolean protected_wrapper;
4685 gboolean running_managed;
4687 if (mono_get_eh_callbacks ()->mono_install_handler_block_guard (mono_thread_info_get_suspend_state (info)))
4688 return MonoResumeThread;
4691 The target thread is running at least one protected block, which must not be interrupted, so we give up.
4692 The protected block code will give them a chance when appropriate.
4694 if (thread->abort_protected_block_count)
4695 return MonoResumeThread;
4697 /*someone is already interrupting it*/
4698 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4699 return MonoResumeThread;
4701 InterlockedIncrement (&thread_interruption_requested);
4703 ji = mono_thread_info_get_last_managed (info);
4704 protected_wrapper = ji && !ji->is_trampoline && !ji->async && mono_threads_is_critical_method (mono_jit_info_get_method (ji));
4705 running_managed = mono_jit_info_match (ji, MONO_CONTEXT_GET_IP (&mono_thread_info_get_suspend_state (info)->ctx));
4707 if (!protected_wrapper && running_managed) {
4708 /*We are in managed code*/
4709 /*Set the thread to call */
4710 if (data->install_async_abort)
4711 mono_thread_info_setup_async_call (info, self_interrupt_thread, NULL);
4712 return MonoResumeThread;
4715 * This will cause waits to be broken.
4716 * It will also prevent the thread from entering a wait, so if the thread returns
4717 * from the wait before it receives the abort signal, it will just spin in the wait
4718 * functions in the io-layer until the signal handler calls QueueUserAPC which will
4721 data->interrupt_token = mono_thread_info_prepare_interrupt (info);
4723 return MonoResumeThread;
4728 async_abort_internal (MonoInternalThread *thread, gboolean install_async_abort)
4730 AbortThreadData data;
4732 g_assert (thread != mono_thread_internal_current ());
4734 data.thread = thread;
4735 data.install_async_abort = install_async_abort;
4736 data.interrupt_token = NULL;
4738 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), TRUE, async_abort_critical, &data);
4739 if (data.interrupt_token)
4740 mono_thread_info_finish_interrupt (data.interrupt_token);
4741 /*FIXME we need to wait for interruption to complete -- figure out how much into interruption we should wait for here*/
4745 self_abort_internal (MonoError *error)
4749 mono_error_init (error);
4751 /* FIXME this is insanely broken, it doesn't cause interruption to happen synchronously
4752 * since passing FALSE to mono_thread_request_interruption makes sure it returns NULL */
4755 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.
4757 exc = mono_thread_request_interruption (TRUE);
4759 mono_error_set_exception_instance (error, exc);
4761 mono_thread_info_self_interrupt ();
4765 MonoInternalThread *thread;
4767 MonoThreadInfoInterruptToken *interrupt_token;
4768 } SuspendThreadData;
4770 static SuspendThreadResult
4771 async_suspend_critical (MonoThreadInfo *info, gpointer ud)
4773 SuspendThreadData *data = (SuspendThreadData *)ud;
4774 MonoInternalThread *thread = data->thread;
4775 MonoJitInfo *ji = NULL;
4776 gboolean protected_wrapper;
4777 gboolean running_managed;
4779 ji = mono_thread_info_get_last_managed (info);
4780 protected_wrapper = ji && !ji->is_trampoline && !ji->async && mono_threads_is_critical_method (mono_jit_info_get_method (ji));
4781 running_managed = mono_jit_info_match (ji, MONO_CONTEXT_GET_IP (&mono_thread_info_get_suspend_state (info)->ctx));
4783 if (running_managed && !protected_wrapper) {
4784 thread->state &= ~ThreadState_SuspendRequested;
4785 thread->state |= ThreadState_Suspended;
4786 return KeepSuspended;
4788 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 0)
4789 InterlockedIncrement (&thread_interruption_requested);
4790 if (data->interrupt)
4791 data->interrupt_token = mono_thread_info_prepare_interrupt ((MonoThreadInfo *)thread->thread_info);
4793 return MonoResumeThread;
4797 /* LOCKING: called with @thread synch_cs held, and releases it */
4799 async_suspend_internal (MonoInternalThread *thread, gboolean interrupt)
4801 SuspendThreadData data;
4803 g_assert (thread != mono_thread_internal_current ());
4805 data.thread = thread;
4806 data.interrupt = interrupt;
4807 data.interrupt_token = NULL;
4809 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), interrupt, async_suspend_critical, &data);
4810 if (data.interrupt_token)
4811 mono_thread_info_finish_interrupt (data.interrupt_token);
4813 UNLOCK_THREAD (thread);
4816 /* LOCKING: called with @thread synch_cs held, and releases it */
4818 self_suspend_internal (void)
4820 MonoInternalThread *thread;
4822 thread = mono_thread_internal_current ();
4824 mono_thread_info_begin_self_suspend ();
4825 thread->state &= ~ThreadState_SuspendRequested;
4826 thread->state |= ThreadState_Suspended;
4828 UNLOCK_THREAD (thread);
4830 mono_thread_info_end_self_suspend ();
4834 * mono_thread_is_foreign:
4835 * @thread: the thread to query
4837 * This function allows one to determine if a thread was created by the mono runtime and has
4838 * a well defined lifecycle or it's a foreigh one, created by the native environment.
4840 * Returns: TRUE if @thread was not created by the runtime.
4843 mono_thread_is_foreign (MonoThread *thread)
4845 MonoThreadInfo *info = (MonoThreadInfo *)thread->internal_thread->thread_info;
4846 return info->runtime_thread == FALSE;
4850 * mono_add_joinable_thread:
4852 * Add TID to the list of joinable threads.
4853 * LOCKING: Acquires the threads lock.
4856 mono_threads_add_joinable_thread (gpointer tid)
4860 * We cannot detach from threads because it causes problems like
4861 * 2fd16f60/r114307. So we collect them and join them when
4862 * we have time (in he finalizer thread).
4864 joinable_threads_lock ();
4865 if (!joinable_threads)
4866 joinable_threads = g_hash_table_new (NULL, NULL);
4867 g_hash_table_insert (joinable_threads, tid, tid);
4868 joinable_thread_count ++;
4869 joinable_threads_unlock ();
4871 mono_gc_finalize_notify ();
4876 * mono_threads_join_threads:
4878 * Join all joinable threads. This is called from the finalizer thread.
4879 * LOCKING: Acquires the threads lock.
4882 mono_threads_join_threads (void)
4885 GHashTableIter iter;
4892 if (!joinable_thread_count)
4896 joinable_threads_lock ();
4898 if (g_hash_table_size (joinable_threads)) {
4899 g_hash_table_iter_init (&iter, joinable_threads);
4900 g_hash_table_iter_next (&iter, &key, (void**)&tid);
4901 thread = (pthread_t)tid;
4902 g_hash_table_remove (joinable_threads, key);
4903 joinable_thread_count --;
4906 joinable_threads_unlock ();
4908 if (thread != pthread_self ()) {
4910 /* This shouldn't block */
4911 mono_native_thread_join (thread);
4924 * Wait for thread TID to exit.
4925 * LOCKING: Acquires the threads lock.
4928 mono_thread_join (gpointer tid)
4932 gboolean found = FALSE;
4934 joinable_threads_lock ();
4935 if (!joinable_threads)
4936 joinable_threads = g_hash_table_new (NULL, NULL);
4937 if (g_hash_table_lookup (joinable_threads, tid)) {
4938 g_hash_table_remove (joinable_threads, tid);
4939 joinable_thread_count --;
4942 joinable_threads_unlock ();
4945 thread = (pthread_t)tid;
4947 mono_native_thread_join (thread);
4953 mono_thread_internal_check_for_interruption_critical (MonoInternalThread *thread)
4955 if ((thread->state & (ThreadState_StopRequested | ThreadState_SuspendRequested)) != 0)
4956 mono_thread_interruption_checkpoint ();
4960 mono_thread_internal_unhandled_exception (MonoObject* exc)
4962 MonoClass *klass = exc->vtable->klass;
4963 if (is_threadabort_exception (klass)) {
4964 mono_thread_internal_reset_abort (mono_thread_internal_current ());
4965 } else if (!is_appdomainunloaded_exception (klass)
4966 && mono_runtime_unhandled_exception_policy_get () == MONO_UNHANDLED_POLICY_CURRENT) {
4967 mono_unhandled_exception (exc);
4968 if (mono_environment_exitcode_get () == 1) {
4969 mono_environment_exitcode_set (255);
4970 mono_invoke_unhandled_exception_hook (exc);
4971 g_assert_not_reached ();
4977 ves_icall_System_Threading_Thread_GetStackTraces (MonoArray **out_threads, MonoArray **out_stack_traces)
4980 mono_threads_get_thread_dump (out_threads, out_stack_traces, &error);
4981 mono_error_set_pending_exception (&error);
4985 * mono_threads_attach_coop: called by native->managed wrappers
4989 * - @return: the original domain which needs to be restored, or NULL.
4992 * - @dummy: contains the original domain
4993 * - @return: a cookie containing current MonoThreadInfo*.
4996 mono_threads_attach_coop (MonoDomain *domain, gpointer *dummy)
4999 gboolean fresh_thread = FALSE;
5002 /* Happens when called from AOTed code which is only used in the root domain. */
5003 domain = mono_get_root_domain ();
5008 /* On coop, when we detached, we moved the thread from RUNNING->BLOCKING.
5009 * If we try to reattach we do a BLOCKING->RUNNING transition. If the thread
5010 * is fresh, mono_thread_attach() will do a STARTING->RUNNING transition so
5011 * we're only responsible for making the cookie. */
5012 if (mono_threads_is_coop_enabled ()) {
5013 MonoThreadInfo *info = mono_thread_info_current_unchecked ();
5014 fresh_thread = !info || !mono_thread_info_is_live (info);
5017 if (!mono_thread_internal_current ()) {
5018 mono_thread_attach_full (domain, FALSE);
5021 mono_thread_set_state (mono_thread_internal_current (), ThreadState_Background);
5024 orig = mono_domain_get ();
5026 mono_domain_set (domain, TRUE);
5028 if (!mono_threads_is_coop_enabled ())
5029 return orig != domain ? orig : NULL;
5033 /* mono_thread_attach put the thread in RUNNING mode from STARTING, but we need to
5034 * return the right cookie. */
5035 return mono_threads_enter_gc_unsafe_region_cookie ();
5038 /* thread state (BLOCKING|RUNNING) -> RUNNING */
5039 return mono_threads_enter_gc_unsafe_region (dummy);
5044 * mono_threads_detach_coop: called by native->managed wrappers
5047 * - @cookie: the original domain which needs to be restored, or NULL.
5051 * - @cookie: contains current MonoThreadInfo* if it was in BLOCKING mode, NULL otherwise
5052 * - @dummy: contains the original domain
5055 mono_threads_detach_coop (gpointer cookie, gpointer *dummy)
5057 MonoDomain *domain, *orig;
5059 if (!mono_threads_is_coop_enabled ()) {
5060 orig = (MonoDomain*) cookie;
5062 mono_domain_set (orig, TRUE);
5064 orig = (MonoDomain*) *dummy;
5066 domain = mono_domain_get ();
5069 /* it won't do anything if cookie is NULL
5070 * thread state RUNNING -> (RUNNING|BLOCKING) */
5071 mono_threads_exit_gc_unsafe_region (cookie, dummy);
5073 if (orig != domain) {
5075 mono_domain_unset ();
5077 mono_domain_set (orig, TRUE);
5083 mono_threads_begin_abort_protected_block (void)
5085 MonoInternalThread *thread;
5087 thread = mono_thread_internal_current ();
5088 ++thread->abort_protected_block_count;
5089 mono_memory_barrier ();
5093 mono_threads_end_abort_protected_block (void)
5095 MonoInternalThread *thread;
5097 thread = mono_thread_internal_current ();
5099 mono_memory_barrier ();
5100 --thread->abort_protected_block_count;
5104 mono_thread_try_resume_interruption (void)
5106 MonoInternalThread *thread;
5108 thread = mono_thread_internal_current ();
5109 if (thread->abort_protected_block_count || mono_get_eh_callbacks ()->mono_current_thread_has_handle_block_guard ())
5112 return mono_thread_resume_interruption ();
5116 /* Returns TRUE if the current thread is ready to be interrupted. */
5118 mono_threads_is_ready_to_be_interrupted (void)
5120 MonoInternalThread *thread;
5122 thread = mono_thread_internal_current ();
5123 LOCK_THREAD (thread);
5124 if (thread->state & (MonoThreadState)(ThreadState_StopRequested | ThreadState_SuspendRequested | ThreadState_AbortRequested)) {
5125 UNLOCK_THREAD (thread);
5129 if (thread->abort_protected_block_count || mono_get_eh_callbacks ()->mono_current_thread_has_handle_block_guard ()) {
5130 UNLOCK_THREAD (thread);
5134 UNLOCK_THREAD (thread);
5140 mono_thread_internal_describe (MonoInternalThread *internal, GString *text)
5142 g_string_append_printf (text, ", thread handle : %p", internal->handle);
5144 if (internal->thread_info) {
5145 g_string_append (text, ", state : ");
5146 mono_thread_info_describe_interrupt_token ((MonoThreadInfo*) internal->thread_info, text);
5149 if (internal->owned_mutexes) {
5152 g_string_append (text, ", owns : [");
5153 for (i = 0; i < internal->owned_mutexes->len; i++)
5154 g_string_append_printf (text, i == 0 ? "%p" : ", %p", g_ptr_array_index (internal->owned_mutexes, i));
5155 g_string_append (text, "]");
5160 mono_thread_internal_is_current (MonoInternalThread *internal)
5162 g_assert (internal);
5163 return mono_native_thread_id_equals (mono_native_thread_id_get (), MONO_UINT_TO_NATIVE_THREAD_ID (internal->tid));