2 * threads.c: Thread support internal calls
5 * Dick Porter (dick@ximian.com)
6 * Paolo Molaro (lupus@ximian.com)
7 * Patrik Torstensson (patrik.torstensson@labs2.com)
9 * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
10 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
11 * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
12 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
20 #include <mono/metadata/object.h>
21 #include <mono/metadata/domain-internals.h>
22 #include <mono/metadata/profiler-private.h>
23 #include <mono/metadata/threads.h>
24 #include <mono/metadata/threads-types.h>
25 #include <mono/metadata/exception.h>
26 #include <mono/metadata/environment.h>
27 #include <mono/metadata/monitor.h>
28 #include <mono/metadata/gc-internals.h>
29 #include <mono/metadata/marshal.h>
30 #include <mono/metadata/runtime.h>
31 #include <mono/io-layer/io-layer.h>
32 #include <mono/metadata/object-internals.h>
33 #include <mono/metadata/mono-debug-debugger.h>
34 #include <mono/utils/monobitset.h>
35 #include <mono/utils/mono-compiler.h>
36 #include <mono/utils/mono-mmap.h>
37 #include <mono/utils/mono-membar.h>
38 #include <mono/utils/mono-time.h>
39 #include <mono/utils/mono-threads.h>
40 #include <mono/utils/mono-threads-coop.h>
41 #include <mono/utils/hazard-pointer.h>
42 #include <mono/utils/mono-tls.h>
43 #include <mono/utils/atomic.h>
44 #include <mono/utils/mono-memory-model.h>
45 #include <mono/utils/mono-threads-coop.h>
46 #include <mono/utils/mono-error-internals.h>
47 #include <mono/utils/os-event.h>
48 #include <mono/utils/mono-threads-debug.h>
49 #include <mono/metadata/w32handle.h>
50 #include <mono/metadata/w32event.h>
51 #include <mono/metadata/w32mutex.h>
53 #include <mono/metadata/gc-internals.h>
54 #include <mono/metadata/reflection-internals.h>
55 #include <mono/metadata/abi-details.h>
61 #if defined(HOST_WIN32)
65 #if defined(PLATFORM_ANDROID) && !defined(TARGET_ARM64) && !defined(TARGET_AMD64)
66 #define USE_TKILL_ON_ANDROID 1
69 #ifdef PLATFORM_ANDROID
72 #ifdef USE_TKILL_ON_ANDROID
73 extern int tkill (pid_t tid, int signal);
77 /*#define THREAD_DEBUG(a) do { a; } while (0)*/
78 #define THREAD_DEBUG(a)
79 /*#define THREAD_WAIT_DEBUG(a) do { a; } while (0)*/
80 #define THREAD_WAIT_DEBUG(a)
81 /*#define LIBGC_DEBUG(a) do { a; } while (0)*/
82 #define LIBGC_DEBUG(a)
84 #define SPIN_TRYLOCK(i) (InterlockedCompareExchange (&(i), 1, 0) == 0)
85 #define SPIN_LOCK(i) do { \
86 if (SPIN_TRYLOCK (i)) \
90 #define SPIN_UNLOCK(i) i = 0
92 #define LOCK_THREAD(thread) lock_thread((thread))
93 #define UNLOCK_THREAD(thread) unlock_thread((thread))
105 typedef struct _StaticDataFreeList StaticDataFreeList;
106 struct _StaticDataFreeList {
107 StaticDataFreeList *next;
115 StaticDataFreeList *freelist;
118 /* Number of cached culture objects in the MonoThread->cached_culture_info array
119 * (per-type): we use the first NUM entries for CultureInfo and the last for
120 * UICultureInfo. So the size of the array is really NUM_CACHED_CULTURES * 2.
122 #define NUM_CACHED_CULTURES 4
123 #define CULTURES_START_IDX 0
124 #define UICULTURES_START_IDX NUM_CACHED_CULTURES
126 /* Controls access to the 'threads' hash table */
127 static void mono_threads_lock (void);
128 static void mono_threads_unlock (void);
129 static MonoCoopMutex threads_mutex;
131 /* Controls access to the 'joinable_threads' hash table */
132 #define joinable_threads_lock() mono_os_mutex_lock (&joinable_threads_mutex)
133 #define joinable_threads_unlock() mono_os_mutex_unlock (&joinable_threads_mutex)
134 static mono_mutex_t joinable_threads_mutex;
136 /* Holds current status of static data heap */
137 static StaticDataInfo thread_static_info;
138 static StaticDataInfo context_static_info;
140 /* The hash of existing threads (key is thread ID, value is
141 * MonoInternalThread*) that need joining before exit
143 static MonoGHashTable *threads=NULL;
145 /* List of app context GC handles.
146 * Added to from ves_icall_System_Runtime_Remoting_Contexts_Context_RegisterContext ().
148 static GHashTable *contexts = NULL;
150 /* Cleanup queue for contexts. */
151 static MonoReferenceQueue *context_queue;
154 * Threads which are starting up and they are not in the 'threads' hash yet.
155 * When mono_thread_attach_internal is called for a thread, it will be removed from this hash table.
156 * Protected by mono_threads_lock ().
158 static MonoGHashTable *threads_starting_up = NULL;
160 /* The TLS key that holds the MonoObject assigned to each thread */
161 static MonoNativeTlsKey current_object_key;
164 /* Protected by the threads lock */
165 static GHashTable *joinable_threads;
166 static int joinable_thread_count;
168 #ifdef MONO_HAVE_FAST_TLS
169 /* we need to use both the Tls* functions and __thread because
170 * the gc needs to see all the threads
172 MONO_FAST_TLS_DECLARE(tls_current_object);
173 #define SET_CURRENT_OBJECT(x) do { \
174 MONO_FAST_TLS_SET (tls_current_object, x); \
175 mono_native_tls_set_value (current_object_key, x); \
177 #define GET_CURRENT_OBJECT() ((MonoInternalThread*) MONO_FAST_TLS_GET (tls_current_object))
179 #define SET_CURRENT_OBJECT(x) mono_native_tls_set_value (current_object_key, x)
180 #define GET_CURRENT_OBJECT() (MonoInternalThread*) mono_native_tls_get_value (current_object_key)
183 /* function called at thread start */
184 static MonoThreadStartCB mono_thread_start_cb = NULL;
186 /* function called at thread attach */
187 static MonoThreadAttachCB mono_thread_attach_cb = NULL;
189 /* function called at thread cleanup */
190 static MonoThreadCleanupFunc mono_thread_cleanup_fn = NULL;
192 /* The default stack size for each thread */
193 static guint32 default_stacksize = 0;
194 #define default_stacksize_for_thread(thread) ((thread)->stack_size? (thread)->stack_size: default_stacksize)
196 static void context_adjust_static_data (MonoAppContext *ctx);
197 static void mono_free_static_data (gpointer* static_data);
198 static void mono_init_static_data_info (StaticDataInfo *static_data);
199 static guint32 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align);
200 static gboolean mono_thread_resume (MonoInternalThread* thread);
201 static void async_abort_internal (MonoInternalThread *thread, gboolean install_async_abort);
202 static void self_abort_internal (MonoError *error);
203 static void async_suspend_internal (MonoInternalThread *thread, gboolean interrupt);
204 static void self_suspend_internal (void);
206 static MonoException* mono_thread_execute_interruption (void);
207 static void ref_stack_destroy (gpointer rs);
209 /* Spin lock for InterlockedXXX 64 bit functions */
210 #define mono_interlocked_lock() mono_os_mutex_lock (&interlocked_mutex)
211 #define mono_interlocked_unlock() mono_os_mutex_unlock (&interlocked_mutex)
212 static mono_mutex_t interlocked_mutex;
214 /* global count of thread interruptions requested */
215 static gint32 thread_interruption_requested = 0;
217 /* Event signaled when a thread changes its background mode */
218 static MonoOSEvent background_change_event;
220 static gboolean shutting_down = FALSE;
222 static gint32 managed_thread_id_counter = 0;
224 /* Class lazy loading functions */
225 static GENERATE_GET_CLASS_WITH_CACHE (appdomain_unloaded_exception, System, AppDomainUnloadedException)
228 mono_threads_lock (void)
230 mono_locks_coop_acquire (&threads_mutex, ThreadsLock);
234 mono_threads_unlock (void)
236 mono_locks_coop_release (&threads_mutex, ThreadsLock);
241 get_next_managed_thread_id (void)
243 return InterlockedIncrement (&managed_thread_id_counter);
247 mono_thread_get_tls_key (void)
249 return current_object_key;
253 mono_thread_get_tls_offset (void)
258 if (current_object_key)
259 offset = current_object_key;
261 MONO_THREAD_VAR_OFFSET (tls_current_object,offset);
266 static inline MonoNativeThreadId
267 thread_get_tid (MonoInternalThread *thread)
269 /* We store the tid as a guint64 to keep the object layout constant between platforms */
270 return MONO_UINT_TO_NATIVE_THREAD_ID (thread->tid);
273 static void ensure_synch_cs_set (MonoInternalThread *thread)
275 MonoCoopMutex *synch_cs;
277 if (thread->synch_cs != NULL) {
281 synch_cs = g_new0 (MonoCoopMutex, 1);
282 mono_coop_mutex_init_recursive (synch_cs);
284 if (InterlockedCompareExchangePointer ((gpointer *)&thread->synch_cs,
285 synch_cs, NULL) != NULL) {
286 /* Another thread must have installed this CS */
287 mono_coop_mutex_destroy (synch_cs);
293 lock_thread (MonoInternalThread *thread)
295 if (!thread->synch_cs)
296 ensure_synch_cs_set (thread);
298 g_assert (thread->synch_cs);
300 mono_coop_mutex_lock (thread->synch_cs);
304 unlock_thread (MonoInternalThread *thread)
306 mono_coop_mutex_unlock (thread->synch_cs);
309 static inline gboolean
310 is_appdomainunloaded_exception (MonoClass *klass)
312 return klass == mono_class_get_appdomain_unloaded_exception_class ();
315 static inline gboolean
316 is_threadabort_exception (MonoClass *klass)
318 return klass == mono_defaults.threadabortexception_class;
322 * NOTE: this function can be called also for threads different from the current one:
323 * make sure no code called from it will ever assume it is run on the thread that is
324 * getting cleaned up.
326 static void thread_cleanup (MonoInternalThread *thread)
330 g_assert (thread != NULL);
332 if (thread->abort_state_handle) {
333 mono_gchandle_free (thread->abort_state_handle);
334 thread->abort_state_handle = 0;
336 thread->abort_exc = NULL;
337 thread->current_appcontext = NULL;
340 * This is necessary because otherwise we might have
341 * cross-domain references which will not get cleaned up when
342 * the target domain is unloaded.
344 if (thread->cached_culture_info) {
346 for (i = 0; i < NUM_CACHED_CULTURES * 2; ++i)
347 mono_array_set (thread->cached_culture_info, MonoObject*, i, NULL);
351 * thread->synch_cs can be NULL if this was called after
352 * ves_icall_System_Threading_InternalThread_Thread_free_internal.
353 * This can happen only during shutdown.
354 * The shutting_down flag is not always set, so we can't assert on it.
356 if (thread->synch_cs)
357 LOCK_THREAD (thread);
359 thread->state |= ThreadState_Stopped;
360 thread->state &= ~ThreadState_Background;
362 if (thread->synch_cs)
363 UNLOCK_THREAD (thread);
366 An interruption request has leaked to cleanup. Adjust the global counter.
368 This can happen is the abort source thread finds the abortee (this) thread
369 in unmanaged code. If this thread never trips back to managed code or check
370 the local flag it will be left set and positively unbalance the global counter.
372 Leaving the counter unbalanced will cause a performance degradation since all threads
373 will now keep checking their local flags all the time.
375 if (InterlockedExchange (&thread->interruption_requested, 0))
376 InterlockedDecrement (&thread_interruption_requested);
378 mono_threads_lock ();
382 } else if (mono_g_hash_table_lookup (threads, (gpointer)thread->tid) != thread) {
383 /* We have to check whether the thread object for the
384 * tid is still the same in the table because the
385 * thread might have been destroyed and the tid reused
386 * in the meantime, in which case the tid would be in
387 * the table, but with another thread object.
391 mono_g_hash_table_remove (threads, (gpointer)thread->tid);
395 mono_threads_unlock ();
397 /* Don't close the handle here, wait for the object finalizer
398 * to do it. Otherwise, the following race condition applies:
400 * 1) Thread exits (and thread_cleanup() closes the handle)
402 * 2) Some other handle is reassigned the same slot
404 * 3) Another thread tries to join the first thread, and
405 * blocks waiting for the reassigned handle to be signalled
406 * (which might never happen). This is possible, because the
407 * thread calling Join() still has a reference to the first
411 /* if the thread is not in the hash it has been removed already */
413 if (thread == mono_thread_internal_current ()) {
414 mono_domain_unset ();
415 mono_memory_barrier ();
417 if (mono_thread_cleanup_fn)
418 mono_thread_cleanup_fn (thread_get_tid (thread));
421 mono_release_type_locks (thread);
423 /* Can happen when we attach the profiler helper thread in order to heapshot. */
424 if (!mono_thread_info_lookup (MONO_UINT_TO_NATIVE_THREAD_ID (thread->tid))->tools_thread)
425 mono_profiler_thread_end (thread->tid);
427 mono_hazard_pointer_clear (mono_hazard_pointer_get (), 1);
429 if (thread == mono_thread_internal_current ()) {
431 * This will signal async signal handlers that the thread has exited.
432 * The profiler callback needs this to be set, so it cannot be done earlier.
434 mono_domain_unset ();
435 mono_memory_barrier ();
438 if (thread == mono_thread_internal_current ())
439 mono_thread_pop_appdomain_ref ();
441 thread->cached_culture_info = NULL;
443 mono_free_static_data (thread->static_data);
444 thread->static_data = NULL;
445 ref_stack_destroy (thread->appdomain_refs);
446 thread->appdomain_refs = NULL;
448 if (mono_thread_cleanup_fn)
449 mono_thread_cleanup_fn (thread_get_tid (thread));
451 if (mono_gc_is_moving ()) {
452 MONO_GC_UNREGISTER_ROOT (thread->thread_pinning_ref);
453 thread->thread_pinning_ref = NULL;
459 * A special static data offset (guint32) consists of 3 parts:
461 * [0] 6-bit index into the array of chunks.
462 * [6] 25-bit offset into the array.
463 * [31] Bit indicating thread or context static.
468 #if G_BYTE_ORDER != G_LITTLE_ENDIAN
479 } SpecialStaticOffset;
481 #define SPECIAL_STATIC_OFFSET_TYPE_THREAD 0
482 #define SPECIAL_STATIC_OFFSET_TYPE_CONTEXT 1
484 #define MAKE_SPECIAL_STATIC_OFFSET(index, offset, type) \
485 ((SpecialStaticOffset) { .fields = { (index), (offset), (type) } }.raw)
486 #define ACCESS_SPECIAL_STATIC_OFFSET(x,f) \
487 (((SpecialStaticOffset *) &(x))->fields.f)
490 get_thread_static_data (MonoInternalThread *thread, guint32 offset)
492 g_assert (ACCESS_SPECIAL_STATIC_OFFSET (offset, type) == SPECIAL_STATIC_OFFSET_TYPE_THREAD);
494 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
495 int off = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
497 return ((char *) thread->static_data [idx]) + off;
501 get_context_static_data (MonoAppContext *ctx, guint32 offset)
503 g_assert (ACCESS_SPECIAL_STATIC_OFFSET (offset, type) == SPECIAL_STATIC_OFFSET_TYPE_CONTEXT);
505 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
506 int off = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
508 return ((char *) ctx->static_data [idx]) + off;
512 get_current_thread_ptr_for_domain (MonoDomain *domain, MonoInternalThread *thread)
514 static MonoClassField *current_thread_field = NULL;
518 if (!current_thread_field) {
519 current_thread_field = mono_class_get_field_from_name (mono_defaults.thread_class, "current_thread");
520 g_assert (current_thread_field);
523 mono_class_vtable (domain, mono_defaults.thread_class);
524 mono_domain_lock (domain);
525 offset = GPOINTER_TO_UINT (g_hash_table_lookup (domain->special_static_fields, current_thread_field));
526 mono_domain_unlock (domain);
529 return (MonoThread **)get_thread_static_data (thread, offset);
533 set_current_thread_for_domain (MonoDomain *domain, MonoInternalThread *thread, MonoThread *current)
535 MonoThread **current_thread_ptr = get_current_thread_ptr_for_domain (domain, thread);
537 g_assert (current->obj.vtable->domain == domain);
539 g_assert (!*current_thread_ptr);
540 *current_thread_ptr = current;
544 create_thread_object (MonoDomain *domain, MonoInternalThread *internal)
550 vtable = mono_class_vtable (domain, mono_defaults.thread_class);
553 thread = (MonoThread*)mono_object_new_mature (vtable, &error);
554 /* only possible failure mode is OOM, from which we don't expect to recover. */
555 mono_error_assert_ok (&error);
557 MONO_OBJECT_SETREF (thread, internal_thread, internal);
562 static MonoInternalThread*
563 create_internal_thread_object (void)
566 MonoInternalThread *thread;
569 vt = mono_class_vtable (mono_get_root_domain (), mono_defaults.internal_thread_class);
570 thread = (MonoInternalThread*) mono_object_new_mature (vt, &error);
571 /* only possible failure mode is OOM, from which we don't exect to recover */
572 mono_error_assert_ok (&error);
574 thread->synch_cs = g_new0 (MonoCoopMutex, 1);
575 mono_coop_mutex_init_recursive (thread->synch_cs);
577 thread->apartment_state = ThreadApartmentState_Unknown;
578 thread->managed_id = get_next_managed_thread_id ();
579 if (mono_gc_is_moving ()) {
580 thread->thread_pinning_ref = thread;
581 MONO_GC_REGISTER_ROOT_PINNING (thread->thread_pinning_ref, MONO_ROOT_SOURCE_THREADING, "thread pinning reference");
584 thread->priority = MONO_THREAD_PRIORITY_NORMAL;
586 thread->suspended = g_new0 (MonoOSEvent, 1);
587 mono_os_event_init (thread->suspended, TRUE);
593 mono_thread_internal_set_priority (MonoInternalThread *internal, MonoThreadPriority priority)
597 g_assert (priority >= MONO_THREAD_PRIORITY_LOWEST);
598 g_assert (priority <= MONO_THREAD_PRIORITY_HIGHEST);
599 g_assert (MONO_THREAD_PRIORITY_LOWEST < MONO_THREAD_PRIORITY_HIGHEST);
604 g_assert (internal->native_handle);
606 res = SetThreadPriority (internal->native_handle, priority - 2);
608 g_error ("%s: SetThreadPriority failed, error %d", __func__, GetLastError ());
609 #else /* HOST_WIN32 */
612 struct sched_param param;
615 tid = thread_get_tid (internal);
617 res = pthread_getschedparam (tid, &policy, ¶m);
619 g_error ("%s: pthread_getschedparam failed, error: \"%s\" (%d)", __func__, g_strerror (res), res);
621 #ifdef _POSIX_PRIORITY_SCHEDULING
624 /* Necessary to get valid priority range */
626 min = sched_get_priority_min (policy);
627 max = sched_get_priority_max (policy);
629 if (max > 0 && min >= 0 && max > min) {
630 double srange, drange, sposition, dposition;
631 srange = MONO_THREAD_PRIORITY_HIGHEST - MONO_THREAD_PRIORITY_LOWEST;
633 sposition = priority - MONO_THREAD_PRIORITY_LOWEST;
634 dposition = (sposition / srange) * drange;
635 param.sched_priority = (int)(dposition + min);
642 param.sched_priority = 50;
648 param.sched_priority = 0;
651 g_error ("%s: unknown policy %d", __func__, policy);
655 res = pthread_setschedparam (tid, policy, ¶m);
658 g_warning ("%s: pthread_setschedparam failed, error: \"%s\" (%d)", __func__, g_strerror (res), res);
661 g_error ("%s: pthread_setschedparam failed, error: \"%s\" (%d)", __func__, g_strerror (res), res);
663 #endif /* HOST_WIN32 */
667 mono_alloc_static_data (gpointer **static_data_ptr, guint32 offset, gboolean threadlocal);
670 mono_thread_attach_internal (MonoThread *thread, gboolean force_attach, gboolean force_domain, gsize *stack_ptr)
672 MonoThreadInfo *info;
673 MonoInternalThread *internal;
674 MonoDomain *domain, *root_domain;
678 info = mono_thread_info_current ();
680 internal = thread->internal_thread;
681 internal->handle = mono_threads_open_thread_handle (info->handle);
683 internal->native_handle = OpenThread (THREAD_ALL_ACCESS, FALSE, GetCurrentThreadId ());
685 internal->tid = MONO_NATIVE_THREAD_ID_TO_UINT (mono_native_thread_id_get ());
686 internal->thread_info = info;
687 internal->small_id = info->small_id;
688 internal->stack_ptr = stack_ptr;
690 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Setting current_object_key to %p", __func__, mono_native_thread_id_get (), internal));
692 SET_CURRENT_OBJECT (internal);
694 domain = mono_object_domain (thread);
696 mono_thread_push_appdomain_ref (domain);
697 if (!mono_domain_set (domain, force_domain)) {
698 mono_thread_pop_appdomain_ref ();
702 mono_threads_lock ();
704 if (threads_starting_up)
705 mono_g_hash_table_remove (threads_starting_up, thread);
707 if (shutting_down && !force_attach) {
708 mono_threads_unlock ();
713 MONO_GC_REGISTER_ROOT_FIXED (threads, MONO_ROOT_SOURCE_THREADING, "threads table");
714 threads = mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_VALUE_GC, MONO_ROOT_SOURCE_THREADING, "threads table");
717 /* We don't need to duplicate thread->handle, because it is
718 * only closed when the thread object is finalized by the GC. */
719 mono_g_hash_table_insert (threads, (gpointer)(gsize)(internal->tid), internal);
721 /* We have to do this here because mono_thread_start_cb
722 * requires that root_domain_thread is set up. */
723 if (thread_static_info.offset || thread_static_info.idx > 0) {
724 /* get the current allocated size */
725 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (thread_static_info.idx, thread_static_info.offset, 0);
726 mono_alloc_static_data (&internal->static_data, offset, TRUE);
729 mono_threads_unlock ();
731 root_domain = mono_get_root_domain ();
733 g_assert (!internal->root_domain_thread);
734 if (domain != root_domain)
735 MONO_OBJECT_SETREF (internal, root_domain_thread, create_thread_object (root_domain, internal));
737 MONO_OBJECT_SETREF (internal, root_domain_thread, thread);
739 if (domain != root_domain)
740 set_current_thread_for_domain (root_domain, internal, internal->root_domain_thread);
742 set_current_thread_for_domain (domain, internal, thread);
744 THREAD_DEBUG (g_message ("%s: Attached thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, internal->tid, internal->handle));
752 MonoObject *start_delegate;
753 MonoObject *start_delegate_arg;
754 MonoThreadStart start_func;
755 gpointer start_func_arg;
757 MonoCoopSem registered;
760 static guint32 WINAPI start_wrapper_internal(StartInfo *start_info, gsize *stack_ptr)
763 MonoThreadStart start_func;
764 void *start_func_arg;
767 * We don't create a local to hold start_info->thread, so hopefully it won't get pinned during a
771 MonoInternalThread *internal;
772 MonoObject *start_delegate;
773 MonoObject *start_delegate_arg;
776 thread = start_info->thread;
777 internal = thread->internal_thread;
778 domain = mono_object_domain (start_info->thread);
780 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper", __func__, mono_native_thread_id_get ()));
782 if (!mono_thread_attach_internal (thread, FALSE, FALSE, stack_ptr)) {
783 start_info->failed = TRUE;
785 mono_coop_sem_post (&start_info->registered);
787 if (InterlockedDecrement (&start_info->ref) == 0) {
788 mono_coop_sem_destroy (&start_info->registered);
795 mono_thread_internal_set_priority (internal, internal->priority);
799 start_delegate = start_info->start_delegate;
800 start_delegate_arg = start_info->start_delegate_arg;
801 start_func = start_info->start_func;
802 start_func_arg = start_info->start_func_arg;
804 /* This MUST be called before any managed code can be
805 * executed, as it calls the callback function that (for the
806 * jit) sets the lmf marker.
809 if (mono_thread_start_cb)
810 mono_thread_start_cb (tid, stack_ptr, start_func);
812 /* On 2.0 profile (and higher), set explicitly since state might have been
814 if (internal->apartment_state == ThreadApartmentState_Unknown)
815 internal->apartment_state = ThreadApartmentState_MTA;
817 mono_thread_init_apartment_state ();
819 /* Let the thread that called Start() know we're ready */
820 mono_coop_sem_post (&start_info->registered);
822 if (InterlockedDecrement (&start_info->ref) == 0) {
823 mono_coop_sem_destroy (&start_info->registered);
827 /* start_info is not valid anymore */
831 * Call this after calling start_notify, since the profiler callback might want
832 * to lock the thread, and the lock is held by thread_start () which waits for
835 mono_profiler_thread_start (tid);
837 /* if the name was set before starting, we didn't invoke the profiler callback */
838 if (internal->name) {
839 char *tname = g_utf16_to_utf8 (internal->name, internal->name_len, NULL, NULL, NULL);
840 mono_profiler_thread_name (internal->tid, tname);
841 mono_native_thread_set_name (MONO_UINT_TO_NATIVE_THREAD_ID (internal->tid), tname);
845 /* start_func is set only for unmanaged start functions */
847 start_func (start_func_arg);
851 g_assert (start_delegate != NULL);
853 /* we may want to handle the exception here. See comment below on unhandled exceptions */
854 args [0] = (gpointer) start_delegate_arg;
855 mono_runtime_delegate_invoke_checked (start_delegate, args, &error);
857 if (!mono_error_ok (&error)) {
858 MonoException *ex = mono_error_convert_to_exception (&error);
860 g_assert (ex != NULL);
861 MonoClass *klass = mono_object_get_class (&ex->object);
862 if ((mono_runtime_unhandled_exception_policy_get () != MONO_UNHANDLED_POLICY_LEGACY) &&
863 !is_threadabort_exception (klass)) {
864 mono_unhandled_exception (&ex->object);
865 mono_invoke_unhandled_exception_hook (&ex->object);
866 g_assert_not_reached ();
869 mono_error_cleanup (&error);
873 /* If the thread calls ExitThread at all, this remaining code
874 * will not be executed, but the main thread will eventually
875 * call thread_cleanup() on this thread's behalf.
878 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper terminating", __func__, mono_native_thread_id_get ()));
880 /* Do any cleanup needed for apartment state. This
881 * cannot be done in thread_cleanup since thread_cleanup could be
882 * called for a thread other than the current thread.
883 * mono_thread_cleanup_apartment_state cleans up apartment
884 * for the current thead */
885 mono_thread_cleanup_apartment_state ();
887 mono_thread_detach_internal (internal);
894 static gsize WINAPI start_wrapper(void *data)
896 volatile gsize dummy;
898 return start_wrapper_internal ((StartInfo*) data, (gsize*) &dummy);
904 * Common thread creation code.
905 * LOCKING: Acquires the threads lock.
908 create_thread (MonoThread *thread, MonoInternalThread *internal, MonoObject *start_delegate, MonoThreadStart start_func, gpointer start_func_arg,
909 gboolean threadpool_thread, guint32 stack_size, MonoError *error)
911 StartInfo *start_info = NULL;
912 MonoThreadHandle *thread_handle;
913 MonoNativeThreadId tid;
915 gsize stack_set_size;
918 g_assert (!start_func && !start_func_arg);
920 g_assert (!start_delegate);
923 * Join joinable threads to prevent running out of threads since the finalizer
924 * thread might be blocked/backlogged.
926 mono_threads_join_threads ();
928 mono_error_init (error);
930 mono_threads_lock ();
932 mono_threads_unlock ();
935 if (threads_starting_up == NULL) {
936 MONO_GC_REGISTER_ROOT_FIXED (threads_starting_up, MONO_ROOT_SOURCE_THREADING, "starting threads table");
937 threads_starting_up = mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_KEY_VALUE_GC, MONO_ROOT_SOURCE_THREADING, "starting threads table");
939 mono_g_hash_table_insert (threads_starting_up, thread, thread);
940 mono_threads_unlock ();
942 internal->threadpool_thread = threadpool_thread;
943 if (threadpool_thread)
944 mono_thread_set_state (internal, ThreadState_Background);
946 start_info = g_new0 (StartInfo, 1);
948 start_info->thread = thread;
949 start_info->start_delegate = start_delegate;
950 start_info->start_delegate_arg = thread->start_obj;
951 start_info->start_func = start_func;
952 start_info->start_func_arg = start_func_arg;
953 start_info->failed = FALSE;
954 mono_coop_sem_init (&start_info->registered, 0);
957 stack_set_size = default_stacksize_for_thread (internal);
961 thread_handle = mono_threads_create_thread (start_wrapper, start_info, &stack_set_size, &tid);
963 if (thread_handle == NULL) {
964 /* The thread couldn't be created, so set an exception */
965 mono_threads_lock ();
966 mono_g_hash_table_remove (threads_starting_up, thread);
967 mono_threads_unlock ();
968 mono_error_set_execution_engine (error, "Couldn't create thread. Error 0x%x", GetLastError());
969 /* ref is not going to be decremented in start_wrapper_internal */
970 InterlockedDecrement (&start_info->ref);
975 internal->stack_size = (int) stack_set_size;
977 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Launching thread %p (%"G_GSIZE_FORMAT")", __func__, mono_native_thread_id_get (), internal, (gsize)internal->tid));
980 * Wait for the thread to set up its TLS data etc, so
981 * theres no potential race condition if someone tries
982 * to look up the data believing the thread has
986 mono_coop_sem_wait (&start_info->registered, MONO_SEM_FLAGS_NONE);
988 mono_threads_close_thread_handle (thread_handle);
990 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Done launching thread %p (%"G_GSIZE_FORMAT")", __func__, mono_native_thread_id_get (), internal, (gsize)internal->tid));
992 ret = !start_info->failed;
995 if (InterlockedDecrement (&start_info->ref) == 0) {
996 mono_coop_sem_destroy (&start_info->registered);
1003 void mono_thread_new_init (intptr_t tid, gpointer stack_start, gpointer func)
1005 if (mono_thread_start_cb) {
1006 mono_thread_start_cb (tid, stack_start, func);
1010 void mono_threads_set_default_stacksize (guint32 stacksize)
1012 default_stacksize = stacksize;
1015 guint32 mono_threads_get_default_stacksize (void)
1017 return default_stacksize;
1021 * mono_thread_create_internal:
1023 * ARG should not be a GC reference.
1026 mono_thread_create_internal (MonoDomain *domain, gpointer func, gpointer arg, gboolean threadpool_thread, guint32 stack_size, MonoError *error)
1029 MonoInternalThread *internal;
1032 mono_error_init (error);
1034 internal = create_internal_thread_object ();
1036 thread = create_thread_object (domain, internal);
1038 LOCK_THREAD (internal);
1040 res = create_thread (thread, internal, NULL, (MonoThreadStart) func, arg, threadpool_thread, stack_size, error);
1041 return_val_if_nok (error, NULL);
1043 UNLOCK_THREAD (internal);
1049 mono_thread_create (MonoDomain *domain, gpointer func, gpointer arg)
1052 if (!mono_thread_create_checked (domain, func, arg, &error))
1053 mono_error_cleanup (&error);
1057 mono_thread_create_checked (MonoDomain *domain, gpointer func, gpointer arg, MonoError *error)
1059 return (NULL != mono_thread_create_internal (domain, func, arg, FALSE, 0, error));
1063 mono_thread_attach (MonoDomain *domain)
1065 MonoThread *thread = mono_thread_attach_full (domain, FALSE);
1071 mono_thread_attach_full (MonoDomain *domain, gboolean force_attach)
1073 MonoInternalThread *internal;
1075 MonoNativeThreadId tid;
1078 if (mono_thread_internal_current_is_attached ()) {
1079 if (domain != mono_domain_get ())
1080 mono_domain_set (domain, TRUE);
1081 /* Already attached */
1082 return mono_thread_current ();
1085 if (!mono_gc_register_thread (&domain)) {
1086 g_error ("Thread %"G_GSIZE_FORMAT" calling into managed code is not registered with the GC. On UNIX, this can be fixed by #include-ing <gc.h> before <pthread.h> in the file containing the thread creation code.", mono_native_thread_id_get ());
1089 tid=mono_native_thread_id_get ();
1091 internal = create_internal_thread_object ();
1093 thread = create_thread_object (domain, internal);
1095 if (!mono_thread_attach_internal (thread, force_attach, TRUE, &stack_ptr)) {
1096 /* Mono is shutting down, so just wait for the end */
1098 mono_thread_info_sleep (10000, NULL);
1101 THREAD_DEBUG (g_message ("%s: Attached thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, internal->handle));
1103 if (mono_thread_attach_cb) {
1107 mono_thread_info_get_stack_bounds (&staddr, &stsize);
1110 mono_thread_attach_cb (MONO_NATIVE_THREAD_ID_TO_UINT (tid), &stack_ptr);
1112 mono_thread_attach_cb (MONO_NATIVE_THREAD_ID_TO_UINT (tid), staddr + stsize);
1115 /* Can happen when we attach the profiler helper thread in order to heapshot. */
1116 if (!mono_thread_info_current ()->tools_thread)
1117 // FIXME: Need a separate callback
1118 mono_profiler_thread_start (MONO_NATIVE_THREAD_ID_TO_UINT (tid));
1124 mono_thread_detach_internal (MonoInternalThread *thread)
1126 g_return_if_fail (thread != NULL);
1128 THREAD_DEBUG (g_message ("%s: mono_thread_detach for %p (%"G_GSIZE_FORMAT")", __func__, thread, (gsize)thread->tid));
1131 mono_w32mutex_abandon ();
1134 thread_cleanup (thread);
1136 SET_CURRENT_OBJECT (NULL);
1137 mono_domain_unset ();
1139 /* Don't need to close the handle to this thread, even though we took a
1140 * reference in mono_thread_attach (), because the GC will do it
1141 * when the Thread object is finalised.
1146 mono_thread_detach (MonoThread *thread)
1149 mono_thread_detach_internal (thread->internal_thread);
1153 * mono_thread_detach_if_exiting:
1155 * Detach the current thread from the runtime if it is exiting, i.e. it is running pthread dtors.
1156 * This should be used at the end of embedding code which calls into managed code, and which
1157 * can be called from pthread dtors, like dealloc: implementations in objective-c.
1160 mono_thread_detach_if_exiting (void)
1162 if (mono_thread_info_is_exiting ()) {
1163 MonoInternalThread *thread;
1165 thread = mono_thread_internal_current ();
1167 mono_thread_detach_internal (thread);
1168 mono_thread_info_detach ();
1176 mono_thread_internal_current_is_attached (void)
1178 MonoInternalThread *internal;
1180 internal = GET_CURRENT_OBJECT ();
1188 mono_thread_exit (void)
1190 MonoInternalThread *thread = mono_thread_internal_current ();
1192 THREAD_DEBUG (g_message ("%s: mono_thread_exit for %p (%"G_GSIZE_FORMAT")", __func__, thread, (gsize)thread->tid));
1194 mono_thread_detach_internal (thread);
1196 /* we could add a callback here for embedders to use. */
1197 if (mono_thread_get_main () && (thread == mono_thread_get_main ()->internal_thread))
1198 exit (mono_environment_exitcode_get ());
1200 mono_thread_info_exit (0);
1204 ves_icall_System_Threading_Thread_ConstructInternalThread (MonoThread *this_obj)
1206 MonoInternalThread *internal;
1208 internal = create_internal_thread_object ();
1210 internal->state = ThreadState_Unstarted;
1212 InterlockedCompareExchangePointer ((volatile gpointer *)&this_obj->internal_thread, internal, NULL);
1216 ves_icall_System_Threading_Thread_Thread_internal (MonoThread *this_obj,
1220 MonoInternalThread *internal;
1223 THREAD_DEBUG (g_message("%s: Trying to start a new thread: this (%p) start (%p)", __func__, this_obj, start));
1225 if (!this_obj->internal_thread)
1226 ves_icall_System_Threading_Thread_ConstructInternalThread (this_obj);
1227 internal = this_obj->internal_thread;
1229 LOCK_THREAD (internal);
1231 if ((internal->state & ThreadState_Unstarted) == 0) {
1232 UNLOCK_THREAD (internal);
1233 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has already been started."));
1237 if ((internal->state & ThreadState_Aborted) != 0) {
1238 UNLOCK_THREAD (internal);
1242 res = create_thread (this_obj, internal, start, NULL, NULL, FALSE, 0, &error);
1244 mono_error_cleanup (&error);
1245 UNLOCK_THREAD (internal);
1249 internal->state &= ~ThreadState_Unstarted;
1251 THREAD_DEBUG (g_message ("%s: Started thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread));
1253 UNLOCK_THREAD (internal);
1254 return internal->handle;
1258 * This is called from the finalizer of the internal thread object.
1261 ves_icall_System_Threading_InternalThread_Thread_free_internal (MonoInternalThread *this_obj)
1263 THREAD_DEBUG (g_message ("%s: Closing thread %p, handle %p", __func__, this, this_obj->handle));
1266 * Since threads keep a reference to their thread object while running, by the time this function is called,
1267 * the thread has already exited/detached, i.e. thread_cleanup () has ran. The exception is during shutdown,
1268 * when thread_cleanup () can be called after this.
1270 if (this_obj->handle) {
1271 mono_threads_close_thread_handle (this_obj->handle);
1272 this_obj->handle = NULL;
1276 CloseHandle (this_obj->native_handle);
1279 if (this_obj->synch_cs) {
1280 MonoCoopMutex *synch_cs = this_obj->synch_cs;
1281 this_obj->synch_cs = NULL;
1282 mono_coop_mutex_destroy (synch_cs);
1286 if (this_obj->name) {
1287 void *name = this_obj->name;
1288 this_obj->name = NULL;
1292 g_assert (this_obj->suspended);
1293 mono_os_event_destroy (this_obj->suspended);
1294 g_free (this_obj->suspended);
1295 this_obj->suspended = NULL;
1299 ves_icall_System_Threading_Thread_Sleep_internal(gint32 ms)
1302 MonoInternalThread *thread = mono_thread_internal_current ();
1304 THREAD_DEBUG (g_message ("%s: Sleeping for %d ms", __func__, ms));
1306 if (mono_thread_current_check_pending_interrupt ())
1310 gboolean alerted = FALSE;
1312 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1314 res = mono_thread_info_sleep (ms, &alerted);
1316 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1319 MonoException* exc = mono_thread_execute_interruption ();
1321 mono_raise_exception (exc);
1333 void ves_icall_System_Threading_Thread_SpinWait_nop (void)
1338 ves_icall_System_Threading_Thread_GetDomainID (void)
1340 return mono_domain_get()->domain_id;
1344 ves_icall_System_Threading_Thread_Yield (void)
1346 return mono_thread_info_yield ();
1350 * mono_thread_get_name:
1352 * Return the name of the thread. NAME_LEN is set to the length of the name.
1353 * Return NULL if the thread has no name. The returned memory is owned by the
1357 mono_thread_get_name (MonoInternalThread *this_obj, guint32 *name_len)
1361 LOCK_THREAD (this_obj);
1363 if (!this_obj->name) {
1367 *name_len = this_obj->name_len;
1368 res = g_new (gunichar2, this_obj->name_len);
1369 memcpy (res, this_obj->name, sizeof (gunichar2) * this_obj->name_len);
1372 UNLOCK_THREAD (this_obj);
1378 * mono_thread_get_name_utf8:
1380 * Return the name of the thread in UTF-8.
1381 * Return NULL if the thread has no name.
1382 * The returned memory is owned by the caller.
1385 mono_thread_get_name_utf8 (MonoThread *thread)
1390 MonoInternalThread *internal = thread->internal_thread;
1391 if (internal == NULL)
1394 LOCK_THREAD (internal);
1396 char *tname = g_utf16_to_utf8 (internal->name, internal->name_len, NULL, NULL, NULL);
1398 UNLOCK_THREAD (internal);
1404 * mono_thread_get_managed_id:
1406 * Return the Thread.ManagedThreadId value of `thread`.
1407 * Returns -1 if `thread` is NULL.
1410 mono_thread_get_managed_id (MonoThread *thread)
1415 MonoInternalThread *internal = thread->internal_thread;
1416 if (internal == NULL)
1419 int32_t id = internal->managed_id;
1425 ves_icall_System_Threading_Thread_GetName_internal (MonoInternalThread *this_obj)
1430 mono_error_init (&error);
1432 LOCK_THREAD (this_obj);
1434 if (!this_obj->name)
1437 str = mono_string_new_utf16_checked (mono_domain_get (), this_obj->name, this_obj->name_len, &error);
1439 UNLOCK_THREAD (this_obj);
1441 if (mono_error_set_pending_exception (&error))
1448 mono_thread_set_name_internal (MonoInternalThread *this_obj, MonoString *name, gboolean permanent, MonoError *error)
1450 LOCK_THREAD (this_obj);
1452 mono_error_init (error);
1454 if ((this_obj->flags & MONO_THREAD_FLAG_NAME_SET)) {
1455 UNLOCK_THREAD (this_obj);
1457 mono_error_set_invalid_operation (error, "Thread.Name can only be set once.");
1460 if (this_obj->name) {
1461 g_free (this_obj->name);
1462 this_obj->name_len = 0;
1465 this_obj->name = g_new (gunichar2, mono_string_length (name));
1466 memcpy (this_obj->name, mono_string_chars (name), mono_string_length (name) * 2);
1467 this_obj->name_len = mono_string_length (name);
1470 this_obj->flags |= MONO_THREAD_FLAG_NAME_SET;
1473 this_obj->name = NULL;
1476 UNLOCK_THREAD (this_obj);
1478 if (this_obj->name && this_obj->tid) {
1479 char *tname = mono_string_to_utf8_checked (name, error);
1480 return_if_nok (error);
1481 mono_profiler_thread_name (this_obj->tid, tname);
1482 mono_native_thread_set_name (thread_get_tid (this_obj), tname);
1488 ves_icall_System_Threading_Thread_SetName_internal (MonoInternalThread *this_obj, MonoString *name)
1491 mono_thread_set_name_internal (this_obj, name, TRUE, &error);
1492 mono_error_set_pending_exception (&error);
1496 * ves_icall_System_Threading_Thread_GetPriority_internal:
1497 * @param this_obj: The MonoInternalThread on which to operate.
1499 * Gets the priority of the given thread.
1500 * @return: The priority of the given thread.
1503 ves_icall_System_Threading_Thread_GetPriority (MonoThread *this_obj)
1506 MonoInternalThread *internal = this_obj->internal_thread;
1508 LOCK_THREAD (internal);
1509 priority = internal->priority;
1510 UNLOCK_THREAD (internal);
1516 * ves_icall_System_Threading_Thread_SetPriority_internal:
1517 * @param this_obj: The MonoInternalThread on which to operate.
1518 * @param priority: The priority to set.
1520 * Sets the priority of the given thread.
1523 ves_icall_System_Threading_Thread_SetPriority (MonoThread *this_obj, int priority)
1525 MonoInternalThread *internal = this_obj->internal_thread;
1527 LOCK_THREAD (internal);
1528 internal->priority = priority;
1529 if (internal->thread_info != NULL)
1530 mono_thread_internal_set_priority (internal, priority);
1531 UNLOCK_THREAD (internal);
1534 /* If the array is already in the requested domain, we just return it,
1535 otherwise we return a copy in that domain. */
1537 byte_array_to_domain (MonoArray *arr, MonoDomain *domain, MonoError *error)
1541 mono_error_init (error);
1545 if (mono_object_domain (arr) == domain)
1548 copy = mono_array_new_checked (domain, mono_defaults.byte_class, arr->max_length, error);
1549 memmove (mono_array_addr (copy, guint8, 0), mono_array_addr (arr, guint8, 0), arr->max_length);
1554 ves_icall_System_Threading_Thread_ByteArrayToRootDomain (MonoArray *arr)
1557 MonoArray *result = byte_array_to_domain (arr, mono_get_root_domain (), &error);
1558 mono_error_set_pending_exception (&error);
1563 ves_icall_System_Threading_Thread_ByteArrayToCurrentDomain (MonoArray *arr)
1566 MonoArray *result = byte_array_to_domain (arr, mono_domain_get (), &error);
1567 mono_error_set_pending_exception (&error);
1572 mono_thread_current (void)
1574 MonoDomain *domain = mono_domain_get ();
1575 MonoInternalThread *internal = mono_thread_internal_current ();
1576 MonoThread **current_thread_ptr;
1578 g_assert (internal);
1579 current_thread_ptr = get_current_thread_ptr_for_domain (domain, internal);
1581 if (!*current_thread_ptr) {
1582 g_assert (domain != mono_get_root_domain ());
1583 *current_thread_ptr = create_thread_object (domain, internal);
1585 return *current_thread_ptr;
1588 /* Return the thread object belonging to INTERNAL in the current domain */
1590 mono_thread_current_for_thread (MonoInternalThread *internal)
1592 MonoDomain *domain = mono_domain_get ();
1593 MonoThread **current_thread_ptr;
1595 g_assert (internal);
1596 current_thread_ptr = get_current_thread_ptr_for_domain (domain, internal);
1598 if (!*current_thread_ptr) {
1599 g_assert (domain != mono_get_root_domain ());
1600 *current_thread_ptr = create_thread_object (domain, internal);
1602 return *current_thread_ptr;
1606 mono_thread_internal_current (void)
1608 MonoInternalThread *res = GET_CURRENT_OBJECT ();
1609 THREAD_DEBUG (g_message ("%s: returning %p", __func__, res));
1614 ves_icall_System_Threading_Thread_Join_internal(MonoThread *this_obj, int ms)
1616 MonoInternalThread *thread = this_obj->internal_thread;
1617 MonoThreadHandle *handle = thread->handle;
1618 MonoInternalThread *cur_thread = mono_thread_internal_current ();
1621 if (mono_thread_current_check_pending_interrupt ())
1624 LOCK_THREAD (thread);
1626 if ((thread->state & ThreadState_Unstarted) != 0) {
1627 UNLOCK_THREAD (thread);
1629 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started."));
1633 UNLOCK_THREAD (thread);
1638 THREAD_DEBUG (g_message ("%s: joining thread handle %p, %d ms", __func__, handle, ms));
1640 mono_thread_set_state (cur_thread, ThreadState_WaitSleepJoin);
1643 ret=mono_thread_info_wait_one_handle (handle, ms, TRUE);
1646 mono_thread_clr_state (cur_thread, ThreadState_WaitSleepJoin);
1648 if(ret==MONO_THREAD_INFO_WAIT_RET_SUCCESS_0) {
1649 THREAD_DEBUG (g_message ("%s: join successful", __func__));
1654 THREAD_DEBUG (g_message ("%s: join failed", __func__));
1659 #define MANAGED_WAIT_FAILED 0x7fffffff
1662 map_native_wait_result_to_managed (gint32 val)
1664 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1665 return val == WAIT_FAILED ? MANAGED_WAIT_FAILED : val;
1669 mono_wait_uninterrupted (MonoInternalThread *thread, guint32 numhandles, gpointer *handles, gboolean waitall, gint32 ms, MonoError *error)
1677 mono_error_init (error);
1679 start = (ms == -1) ? 0 : mono_100ns_ticks ();
1682 if (numhandles != 1)
1683 ret = WaitForMultipleObjectsEx (numhandles, handles, waitall, wait, TRUE);
1685 ret = WaitForSingleObjectEx (handles [0], ms, TRUE);
1688 if (ret != WAIT_IO_COMPLETION)
1691 exc = mono_thread_execute_interruption ();
1693 mono_error_set_exception_instance (error, exc);
1700 /* Re-calculate ms according to the time passed */
1701 diff_ms = (gint32)((mono_100ns_ticks () - start) / 10000);
1702 if (diff_ms >= ms) {
1706 wait = ms - diff_ms;
1712 gint32 ves_icall_System_Threading_WaitHandle_WaitAll_internal(MonoArray *mono_handles, gint32 ms)
1719 MonoObject *waitHandle;
1720 MonoInternalThread *thread = mono_thread_internal_current ();
1722 /* Do this WaitSleepJoin check before creating objects */
1723 if (mono_thread_current_check_pending_interrupt ())
1724 return map_native_wait_result_to_managed (WAIT_FAILED);
1726 /* We fail in managed if the array has more than 64 elements */
1727 numhandles = (guint32)mono_array_length(mono_handles);
1728 handles = g_new0(HANDLE, numhandles);
1730 for(i = 0; i < numhandles; i++) {
1731 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
1732 handles [i] = mono_wait_handle_get_handle ((MonoWaitHandle *) waitHandle);
1739 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1741 ret = mono_wait_uninterrupted (thread, numhandles, handles, TRUE, ms, &error);
1743 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1747 mono_error_set_pending_exception (&error);
1749 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1750 return map_native_wait_result_to_managed (ret);
1753 gint32 ves_icall_System_Threading_WaitHandle_WaitAny_internal(MonoArray *mono_handles, gint32 ms)
1756 HANDLE handles [MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
1757 uintptr_t numhandles;
1760 MonoObject *waitHandle;
1761 MonoInternalThread *thread = mono_thread_internal_current ();
1763 /* Do this WaitSleepJoin check before creating objects */
1764 if (mono_thread_current_check_pending_interrupt ())
1765 return map_native_wait_result_to_managed (WAIT_FAILED);
1767 numhandles = mono_array_length(mono_handles);
1768 if (numhandles > MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS)
1769 return map_native_wait_result_to_managed (WAIT_FAILED);
1771 for(i = 0; i < numhandles; i++) {
1772 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
1773 handles [i] = mono_wait_handle_get_handle ((MonoWaitHandle *) waitHandle);
1780 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1782 ret = mono_wait_uninterrupted (thread, numhandles, handles, FALSE, ms, &error);
1784 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1786 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") returning %d", __func__, mono_native_thread_id_get (), ret));
1788 mono_error_set_pending_exception (&error);
1790 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1791 return map_native_wait_result_to_managed (ret);
1794 gint32 ves_icall_System_Threading_WaitHandle_WaitOne_internal(HANDLE handle, gint32 ms)
1798 MonoInternalThread *thread = mono_thread_internal_current ();
1800 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") waiting for %p, %d ms", __func__, mono_native_thread_id_get (), handle, ms));
1806 if (mono_thread_current_check_pending_interrupt ())
1807 return map_native_wait_result_to_managed (WAIT_FAILED);
1809 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1811 ret = mono_wait_uninterrupted (thread, 1, &handle, FALSE, ms, &error);
1813 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1815 mono_error_set_pending_exception (&error);
1816 return map_native_wait_result_to_managed (ret);
1820 ves_icall_System_Threading_WaitHandle_SignalAndWait_Internal (HANDLE toSignal, HANDLE toWait, gint32 ms)
1823 MonoInternalThread *thread = mono_thread_internal_current ();
1828 if (mono_thread_current_check_pending_interrupt ())
1829 return map_native_wait_result_to_managed (WAIT_FAILED);
1831 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1834 ret = SignalObjectAndWait (toSignal, toWait, ms, TRUE);
1837 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1839 return map_native_wait_result_to_managed (ret);
1842 gint32 ves_icall_System_Threading_Interlocked_Increment_Int (gint32 *location)
1844 return InterlockedIncrement (location);
1847 gint64 ves_icall_System_Threading_Interlocked_Increment_Long (gint64 *location)
1849 #if SIZEOF_VOID_P == 4
1850 if (G_UNLIKELY ((size_t)location & 0x7)) {
1852 mono_interlocked_lock ();
1855 mono_interlocked_unlock ();
1859 return InterlockedIncrement64 (location);
1862 gint32 ves_icall_System_Threading_Interlocked_Decrement_Int (gint32 *location)
1864 return InterlockedDecrement(location);
1867 gint64 ves_icall_System_Threading_Interlocked_Decrement_Long (gint64 * location)
1869 #if SIZEOF_VOID_P == 4
1870 if (G_UNLIKELY ((size_t)location & 0x7)) {
1872 mono_interlocked_lock ();
1875 mono_interlocked_unlock ();
1879 return InterlockedDecrement64 (location);
1882 gint32 ves_icall_System_Threading_Interlocked_Exchange_Int (gint32 *location, gint32 value)
1884 return InterlockedExchange(location, value);
1887 MonoObject * ves_icall_System_Threading_Interlocked_Exchange_Object (MonoObject **location, MonoObject *value)
1890 res = (MonoObject *) InterlockedExchangePointer((gpointer *) location, value);
1891 mono_gc_wbarrier_generic_nostore (location);
1895 gpointer ves_icall_System_Threading_Interlocked_Exchange_IntPtr (gpointer *location, gpointer value)
1897 return InterlockedExchangePointer(location, value);
1900 gfloat ves_icall_System_Threading_Interlocked_Exchange_Single (gfloat *location, gfloat value)
1902 IntFloatUnion val, ret;
1905 ret.ival = InterlockedExchange((gint32 *) location, val.ival);
1911 ves_icall_System_Threading_Interlocked_Exchange_Long (gint64 *location, gint64 value)
1913 #if SIZEOF_VOID_P == 4
1914 if (G_UNLIKELY ((size_t)location & 0x7)) {
1916 mono_interlocked_lock ();
1919 mono_interlocked_unlock ();
1923 return InterlockedExchange64 (location, value);
1927 ves_icall_System_Threading_Interlocked_Exchange_Double (gdouble *location, gdouble value)
1929 LongDoubleUnion val, ret;
1932 ret.ival = (gint64)InterlockedExchange64((gint64 *) location, val.ival);
1937 gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int(gint32 *location, gint32 value, gint32 comparand)
1939 return InterlockedCompareExchange(location, value, comparand);
1942 gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int_Success(gint32 *location, gint32 value, gint32 comparand, MonoBoolean *success)
1944 gint32 r = InterlockedCompareExchange(location, value, comparand);
1945 *success = r == comparand;
1949 MonoObject * ves_icall_System_Threading_Interlocked_CompareExchange_Object (MonoObject **location, MonoObject *value, MonoObject *comparand)
1952 res = (MonoObject *) InterlockedCompareExchangePointer((gpointer *) location, value, comparand);
1953 mono_gc_wbarrier_generic_nostore (location);
1957 gpointer ves_icall_System_Threading_Interlocked_CompareExchange_IntPtr(gpointer *location, gpointer value, gpointer comparand)
1959 return InterlockedCompareExchangePointer(location, value, comparand);
1962 gfloat ves_icall_System_Threading_Interlocked_CompareExchange_Single (gfloat *location, gfloat value, gfloat comparand)
1964 IntFloatUnion val, ret, cmp;
1967 cmp.fval = comparand;
1968 ret.ival = InterlockedCompareExchange((gint32 *) location, val.ival, cmp.ival);
1974 ves_icall_System_Threading_Interlocked_CompareExchange_Double (gdouble *location, gdouble value, gdouble comparand)
1976 #if SIZEOF_VOID_P == 8
1977 LongDoubleUnion val, comp, ret;
1980 comp.fval = comparand;
1981 ret.ival = (gint64)InterlockedCompareExchangePointer((gpointer *) location, (gpointer)val.ival, (gpointer)comp.ival);
1987 mono_interlocked_lock ();
1989 if (old == comparand)
1991 mono_interlocked_unlock ();
1998 ves_icall_System_Threading_Interlocked_CompareExchange_Long (gint64 *location, gint64 value, gint64 comparand)
2000 #if SIZEOF_VOID_P == 4
2001 if (G_UNLIKELY ((size_t)location & 0x7)) {
2003 mono_interlocked_lock ();
2005 if (old == comparand)
2007 mono_interlocked_unlock ();
2011 return InterlockedCompareExchange64 (location, value, comparand);
2015 ves_icall_System_Threading_Interlocked_CompareExchange_T (MonoObject **location, MonoObject *value, MonoObject *comparand)
2018 res = (MonoObject *)InterlockedCompareExchangePointer ((volatile gpointer *)location, value, comparand);
2019 mono_gc_wbarrier_generic_nostore (location);
2024 ves_icall_System_Threading_Interlocked_Exchange_T (MonoObject **location, MonoObject *value)
2027 MONO_CHECK_NULL (location, NULL);
2028 res = (MonoObject *)InterlockedExchangePointer ((volatile gpointer *)location, value);
2029 mono_gc_wbarrier_generic_nostore (location);
2034 ves_icall_System_Threading_Interlocked_Add_Int (gint32 *location, gint32 value)
2036 return InterlockedAdd (location, value);
2040 ves_icall_System_Threading_Interlocked_Add_Long (gint64 *location, gint64 value)
2042 #if SIZEOF_VOID_P == 4
2043 if (G_UNLIKELY ((size_t)location & 0x7)) {
2045 mono_interlocked_lock ();
2048 mono_interlocked_unlock ();
2052 return InterlockedAdd64 (location, value);
2056 ves_icall_System_Threading_Interlocked_Read_Long (gint64 *location)
2058 #if SIZEOF_VOID_P == 4
2059 if (G_UNLIKELY ((size_t)location & 0x7)) {
2061 mono_interlocked_lock ();
2063 mono_interlocked_unlock ();
2067 return InterlockedRead64 (location);
2071 ves_icall_System_Threading_Thread_MemoryBarrier (void)
2073 mono_memory_barrier ();
2077 ves_icall_System_Threading_Thread_ClrState (MonoInternalThread* this_obj, guint32 state)
2079 mono_thread_clr_state (this_obj, (MonoThreadState)state);
2081 if (state & ThreadState_Background) {
2082 /* If the thread changes the background mode, the main thread has to
2083 * be notified, since it has to rebuild the list of threads to
2086 mono_os_event_set (&background_change_event);
2091 ves_icall_System_Threading_Thread_SetState (MonoInternalThread* this_obj, guint32 state)
2093 mono_thread_set_state (this_obj, (MonoThreadState)state);
2095 if (state & ThreadState_Background) {
2096 /* If the thread changes the background mode, the main thread has to
2097 * be notified, since it has to rebuild the list of threads to
2100 mono_os_event_set (&background_change_event);
2105 ves_icall_System_Threading_Thread_GetState (MonoInternalThread* this_obj)
2109 LOCK_THREAD (this_obj);
2111 state = this_obj->state;
2113 UNLOCK_THREAD (this_obj);
2118 void ves_icall_System_Threading_Thread_Interrupt_internal (MonoThread *this_obj)
2120 MonoInternalThread *current;
2122 MonoInternalThread *thread = this_obj->internal_thread;
2124 LOCK_THREAD (thread);
2126 current = mono_thread_internal_current ();
2128 thread->thread_interrupt_requested = TRUE;
2129 throw_ = current != thread && (thread->state & ThreadState_WaitSleepJoin);
2131 UNLOCK_THREAD (thread);
2134 async_abort_internal (thread, FALSE);
2139 * mono_thread_current_check_pending_interrupt:
2141 * Checks if there's a interruption request and set the pending exception if so.
2143 * @returns true if a pending exception was set
2146 mono_thread_current_check_pending_interrupt (void)
2148 MonoInternalThread *thread = mono_thread_internal_current ();
2149 gboolean throw_ = FALSE;
2151 LOCK_THREAD (thread);
2153 if (thread->thread_interrupt_requested) {
2155 thread->thread_interrupt_requested = FALSE;
2158 UNLOCK_THREAD (thread);
2161 mono_set_pending_exception (mono_get_exception_thread_interrupted ());
2166 request_thread_abort (MonoInternalThread *thread, MonoObject *state)
2168 LOCK_THREAD (thread);
2170 if ((thread->state & ThreadState_AbortRequested) != 0 ||
2171 (thread->state & ThreadState_StopRequested) != 0 ||
2172 (thread->state & ThreadState_Stopped) != 0)
2174 UNLOCK_THREAD (thread);
2178 if ((thread->state & ThreadState_Unstarted) != 0) {
2179 thread->state |= ThreadState_Aborted;
2180 UNLOCK_THREAD (thread);
2184 thread->state |= ThreadState_AbortRequested;
2185 if (thread->abort_state_handle)
2186 mono_gchandle_free (thread->abort_state_handle);
2188 thread->abort_state_handle = mono_gchandle_new (state, FALSE);
2189 g_assert (thread->abort_state_handle);
2191 thread->abort_state_handle = 0;
2193 thread->abort_exc = NULL;
2195 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Abort requested for %p (%"G_GSIZE_FORMAT")", __func__, mono_native_thread_id_get (), thread, (gsize)thread->tid));
2197 /* During shutdown, we can't wait for other threads */
2199 /* Make sure the thread is awake */
2200 mono_thread_resume (thread);
2202 UNLOCK_THREAD (thread);
2207 ves_icall_System_Threading_Thread_Abort (MonoInternalThread *thread, MonoObject *state)
2209 if (!request_thread_abort (thread, state))
2212 if (thread == mono_thread_internal_current ()) {
2214 self_abort_internal (&error);
2215 mono_error_set_pending_exception (&error);
2217 async_abort_internal (thread, TRUE);
2222 * mono_thread_internal_abort:
2224 * Request thread @thread to be aborted.
2226 * @thread MUST NOT be the current thread.
2229 mono_thread_internal_abort (MonoInternalThread *thread)
2231 g_assert (thread != mono_thread_internal_current ());
2233 if (!request_thread_abort (thread, NULL))
2235 async_abort_internal (thread, TRUE);
2239 ves_icall_System_Threading_Thread_ResetAbort (MonoThread *this_obj)
2241 MonoInternalThread *thread = mono_thread_internal_current ();
2242 gboolean was_aborting;
2244 LOCK_THREAD (thread);
2245 was_aborting = thread->state & ThreadState_AbortRequested;
2246 thread->state &= ~ThreadState_AbortRequested;
2247 UNLOCK_THREAD (thread);
2249 if (!was_aborting) {
2250 const char *msg = "Unable to reset abort because no abort was requested";
2251 mono_set_pending_exception (mono_get_exception_thread_state (msg));
2254 thread->abort_exc = NULL;
2255 if (thread->abort_state_handle) {
2256 mono_gchandle_free (thread->abort_state_handle);
2257 /* This is actually not necessary - the handle
2258 only counts if the exception is set */
2259 thread->abort_state_handle = 0;
2264 mono_thread_internal_reset_abort (MonoInternalThread *thread)
2266 LOCK_THREAD (thread);
2268 thread->state &= ~ThreadState_AbortRequested;
2270 if (thread->abort_exc) {
2271 thread->abort_exc = NULL;
2272 if (thread->abort_state_handle) {
2273 mono_gchandle_free (thread->abort_state_handle);
2274 /* This is actually not necessary - the handle
2275 only counts if the exception is set */
2276 thread->abort_state_handle = 0;
2280 UNLOCK_THREAD (thread);
2284 ves_icall_System_Threading_Thread_GetAbortExceptionState (MonoThread *this_obj)
2287 MonoInternalThread *thread = this_obj->internal_thread;
2288 MonoObject *state, *deserialized = NULL;
2291 if (!thread->abort_state_handle)
2294 state = mono_gchandle_get_target (thread->abort_state_handle);
2297 domain = mono_domain_get ();
2298 if (mono_object_domain (state) == domain)
2301 deserialized = mono_object_xdomain_representation (state, domain, &error);
2303 if (!deserialized) {
2304 MonoException *invalid_op_exc = mono_get_exception_invalid_operation ("Thread.ExceptionState cannot access an ExceptionState from a different AppDomain");
2305 if (!is_ok (&error)) {
2306 MonoObject *exc = (MonoObject*)mono_error_convert_to_exception (&error);
2307 MONO_OBJECT_SETREF (invalid_op_exc, inner_ex, exc);
2309 mono_set_pending_exception (invalid_op_exc);
2313 return deserialized;
2317 mono_thread_suspend (MonoInternalThread *thread)
2319 LOCK_THREAD (thread);
2321 if ((thread->state & ThreadState_Unstarted) != 0 ||
2322 (thread->state & ThreadState_Aborted) != 0 ||
2323 (thread->state & ThreadState_Stopped) != 0)
2325 UNLOCK_THREAD (thread);
2329 if ((thread->state & ThreadState_Suspended) != 0 ||
2330 (thread->state & ThreadState_SuspendRequested) != 0 ||
2331 (thread->state & ThreadState_StopRequested) != 0)
2333 UNLOCK_THREAD (thread);
2337 thread->state |= ThreadState_SuspendRequested;
2338 if (mono_threads_is_coop_enabled ())
2339 mono_os_event_reset (thread->suspended);
2341 if (thread == mono_thread_internal_current ()) {
2342 /* calls UNLOCK_THREAD (thread) */
2343 self_suspend_internal ();
2345 /* calls UNLOCK_THREAD (thread) */
2346 async_suspend_internal (thread, FALSE);
2353 ves_icall_System_Threading_Thread_Suspend (MonoThread *this_obj)
2355 if (!mono_thread_suspend (this_obj->internal_thread)) {
2356 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2361 /* LOCKING: LOCK_THREAD(thread) must be held */
2363 mono_thread_resume (MonoInternalThread *thread)
2365 if ((thread->state & ThreadState_SuspendRequested) != 0) {
2366 // MOSTLY_ASYNC_SAFE_PRINTF ("RESUME (1) thread %p\n", thread_get_tid (thread));
2367 if (mono_threads_is_coop_enabled ())
2368 mono_os_event_set (thread->suspended);
2369 thread->state &= ~ThreadState_SuspendRequested;
2373 if ((thread->state & ThreadState_Suspended) == 0 ||
2374 (thread->state & ThreadState_Unstarted) != 0 ||
2375 (thread->state & ThreadState_Aborted) != 0 ||
2376 (thread->state & ThreadState_Stopped) != 0)
2378 // MOSTLY_ASYNC_SAFE_PRINTF ("RESUME (2) thread %p\n", thread_get_tid (thread));
2382 // MOSTLY_ASYNC_SAFE_PRINTF ("RESUME (3) thread %p\n", thread_get_tid (thread));
2384 if (mono_threads_is_coop_enabled ()) {
2385 mono_os_event_set (thread->suspended);
2387 UNLOCK_THREAD (thread);
2389 /* Awake the thread */
2390 if (!mono_thread_info_resume (thread_get_tid (thread)))
2393 LOCK_THREAD (thread);
2396 thread->state &= ~ThreadState_Suspended;
2402 ves_icall_System_Threading_Thread_Resume (MonoThread *thread)
2404 if (!thread->internal_thread) {
2405 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2407 LOCK_THREAD (thread->internal_thread);
2408 if (!mono_thread_resume (thread->internal_thread))
2409 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2410 UNLOCK_THREAD (thread->internal_thread);
2415 mono_threads_is_critical_method (MonoMethod *method)
2417 switch (method->wrapper_type) {
2418 case MONO_WRAPPER_RUNTIME_INVOKE:
2419 case MONO_WRAPPER_XDOMAIN_INVOKE:
2420 case MONO_WRAPPER_XDOMAIN_DISPATCH:
2427 find_wrapper (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
2432 if (mono_threads_is_critical_method (m)) {
2433 *((gboolean*)data) = TRUE;
2440 is_running_protected_wrapper (void)
2442 gboolean found = FALSE;
2443 mono_stack_walk (find_wrapper, &found);
2448 request_thread_stop (MonoInternalThread *thread)
2450 LOCK_THREAD (thread);
2452 if ((thread->state & ThreadState_StopRequested) != 0 ||
2453 (thread->state & ThreadState_Stopped) != 0)
2455 UNLOCK_THREAD (thread);
2459 /* Make sure the thread is awake */
2460 mono_thread_resume (thread);
2462 thread->state |= ThreadState_StopRequested;
2463 thread->state &= ~ThreadState_AbortRequested;
2465 UNLOCK_THREAD (thread);
2470 * mono_thread_internal_stop:
2472 * Request thread @thread to stop.
2474 * @thread MUST NOT be the current thread.
2477 mono_thread_internal_stop (MonoInternalThread *thread)
2479 g_assert (thread != mono_thread_internal_current ());
2481 if (!request_thread_stop (thread))
2484 async_abort_internal (thread, TRUE);
2487 void mono_thread_stop (MonoThread *thread)
2489 MonoInternalThread *internal = thread->internal_thread;
2491 if (!request_thread_stop (internal))
2494 if (internal == mono_thread_internal_current ()) {
2496 self_abort_internal (&error);
2498 This function is part of the embeding API and has no way to return the exception
2499 to be thrown. So what we do is keep the old behavior and raise the exception.
2501 mono_error_raise_exception (&error); /* OK to throw, see note */
2503 async_abort_internal (internal, TRUE);
2508 ves_icall_System_Threading_Thread_VolatileRead1 (void *ptr)
2510 gint8 tmp = *(volatile gint8 *)ptr;
2511 mono_memory_barrier ();
2516 ves_icall_System_Threading_Thread_VolatileRead2 (void *ptr)
2518 gint16 tmp = *(volatile gint16 *)ptr;
2519 mono_memory_barrier ();
2524 ves_icall_System_Threading_Thread_VolatileRead4 (void *ptr)
2526 gint32 tmp = *(volatile gint32 *)ptr;
2527 mono_memory_barrier ();
2532 ves_icall_System_Threading_Thread_VolatileRead8 (void *ptr)
2534 gint64 tmp = *(volatile gint64 *)ptr;
2535 mono_memory_barrier ();
2540 ves_icall_System_Threading_Thread_VolatileReadIntPtr (void *ptr)
2542 volatile void *tmp = *(volatile void **)ptr;
2543 mono_memory_barrier ();
2544 return (void *) tmp;
2548 ves_icall_System_Threading_Thread_VolatileReadObject (void *ptr)
2550 volatile MonoObject *tmp = *(volatile MonoObject **)ptr;
2551 mono_memory_barrier ();
2552 return (MonoObject *) tmp;
2556 ves_icall_System_Threading_Thread_VolatileReadDouble (void *ptr)
2558 double tmp = *(volatile double *)ptr;
2559 mono_memory_barrier ();
2564 ves_icall_System_Threading_Thread_VolatileReadFloat (void *ptr)
2566 float tmp = *(volatile float *)ptr;
2567 mono_memory_barrier ();
2572 ves_icall_System_Threading_Volatile_Read1 (void *ptr)
2574 return InterlockedRead8 ((volatile gint8 *)ptr);
2578 ves_icall_System_Threading_Volatile_Read2 (void *ptr)
2580 return InterlockedRead16 ((volatile gint16 *)ptr);
2584 ves_icall_System_Threading_Volatile_Read4 (void *ptr)
2586 return InterlockedRead ((volatile gint32 *)ptr);
2590 ves_icall_System_Threading_Volatile_Read8 (void *ptr)
2592 #if SIZEOF_VOID_P == 4
2593 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2595 mono_interlocked_lock ();
2596 val = *(gint64*)ptr;
2597 mono_interlocked_unlock ();
2601 return InterlockedRead64 ((volatile gint64 *)ptr);
2605 ves_icall_System_Threading_Volatile_ReadIntPtr (void *ptr)
2607 return InterlockedReadPointer ((volatile gpointer *)ptr);
2611 ves_icall_System_Threading_Volatile_ReadDouble (void *ptr)
2615 #if SIZEOF_VOID_P == 4
2616 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2618 mono_interlocked_lock ();
2619 val = *(double*)ptr;
2620 mono_interlocked_unlock ();
2625 u.ival = InterlockedRead64 ((volatile gint64 *)ptr);
2631 ves_icall_System_Threading_Volatile_ReadFloat (void *ptr)
2635 u.ival = InterlockedRead ((volatile gint32 *)ptr);
2641 ves_icall_System_Threading_Volatile_Read_T (void *ptr)
2643 return (MonoObject *)InterlockedReadPointer ((volatile gpointer *)ptr);
2647 ves_icall_System_Threading_Thread_VolatileWrite1 (void *ptr, gint8 value)
2649 mono_memory_barrier ();
2650 *(volatile gint8 *)ptr = value;
2654 ves_icall_System_Threading_Thread_VolatileWrite2 (void *ptr, gint16 value)
2656 mono_memory_barrier ();
2657 *(volatile gint16 *)ptr = value;
2661 ves_icall_System_Threading_Thread_VolatileWrite4 (void *ptr, gint32 value)
2663 mono_memory_barrier ();
2664 *(volatile gint32 *)ptr = value;
2668 ves_icall_System_Threading_Thread_VolatileWrite8 (void *ptr, gint64 value)
2670 mono_memory_barrier ();
2671 *(volatile gint64 *)ptr = value;
2675 ves_icall_System_Threading_Thread_VolatileWriteIntPtr (void *ptr, void *value)
2677 mono_memory_barrier ();
2678 *(volatile void **)ptr = value;
2682 ves_icall_System_Threading_Thread_VolatileWriteObject (void *ptr, MonoObject *value)
2684 mono_memory_barrier ();
2685 mono_gc_wbarrier_generic_store (ptr, value);
2689 ves_icall_System_Threading_Thread_VolatileWriteDouble (void *ptr, double value)
2691 mono_memory_barrier ();
2692 *(volatile double *)ptr = value;
2696 ves_icall_System_Threading_Thread_VolatileWriteFloat (void *ptr, float value)
2698 mono_memory_barrier ();
2699 *(volatile float *)ptr = value;
2703 ves_icall_System_Threading_Volatile_Write1 (void *ptr, gint8 value)
2705 InterlockedWrite8 ((volatile gint8 *)ptr, value);
2709 ves_icall_System_Threading_Volatile_Write2 (void *ptr, gint16 value)
2711 InterlockedWrite16 ((volatile gint16 *)ptr, value);
2715 ves_icall_System_Threading_Volatile_Write4 (void *ptr, gint32 value)
2717 InterlockedWrite ((volatile gint32 *)ptr, value);
2721 ves_icall_System_Threading_Volatile_Write8 (void *ptr, gint64 value)
2723 #if SIZEOF_VOID_P == 4
2724 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2725 mono_interlocked_lock ();
2726 *(gint64*)ptr = value;
2727 mono_interlocked_unlock ();
2732 InterlockedWrite64 ((volatile gint64 *)ptr, value);
2736 ves_icall_System_Threading_Volatile_WriteIntPtr (void *ptr, void *value)
2738 InterlockedWritePointer ((volatile gpointer *)ptr, value);
2742 ves_icall_System_Threading_Volatile_WriteDouble (void *ptr, double value)
2746 #if SIZEOF_VOID_P == 4
2747 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2748 mono_interlocked_lock ();
2749 *(double*)ptr = value;
2750 mono_interlocked_unlock ();
2757 InterlockedWrite64 ((volatile gint64 *)ptr, u.ival);
2761 ves_icall_System_Threading_Volatile_WriteFloat (void *ptr, float value)
2767 InterlockedWrite ((volatile gint32 *)ptr, u.ival);
2771 ves_icall_System_Threading_Volatile_Write_T (void *ptr, MonoObject *value)
2773 mono_gc_wbarrier_generic_store_atomic (ptr, value);
2777 free_context (void *user_data)
2779 ContextStaticData *data = user_data;
2781 mono_threads_lock ();
2784 * There is no guarantee that, by the point this reference queue callback
2785 * has been invoked, the GC handle associated with the object will fail to
2786 * resolve as one might expect. So if we don't free and remove the GC
2787 * handle here, free_context_static_data_helper () could end up resolving
2788 * a GC handle to an actually-dead context which would contain a pointer
2789 * to an already-freed static data segment, resulting in a crash when
2792 g_hash_table_remove (contexts, GUINT_TO_POINTER (data->gc_handle));
2794 mono_threads_unlock ();
2796 mono_gchandle_free (data->gc_handle);
2797 mono_free_static_data (data->static_data);
2802 ves_icall_System_Runtime_Remoting_Contexts_Context_RegisterContext (MonoAppContext *ctx)
2804 mono_threads_lock ();
2806 //g_print ("Registering context %d in domain %d\n", ctx->context_id, ctx->domain_id);
2809 contexts = g_hash_table_new (NULL, NULL);
2812 context_queue = mono_gc_reference_queue_new (free_context);
2814 gpointer gch = GUINT_TO_POINTER (mono_gchandle_new_weakref (&ctx->obj, FALSE));
2815 g_hash_table_insert (contexts, gch, gch);
2818 * We use this intermediate structure to contain a duplicate pointer to
2819 * the static data because we can't rely on being able to resolve the GC
2820 * handle in the reference queue callback.
2822 ContextStaticData *data = g_new0 (ContextStaticData, 1);
2823 data->gc_handle = GPOINTER_TO_UINT (gch);
2826 context_adjust_static_data (ctx);
2827 mono_gc_reference_queue_add (context_queue, &ctx->obj, data);
2829 mono_threads_unlock ();
2831 mono_profiler_context_loaded (ctx);
2835 ves_icall_System_Runtime_Remoting_Contexts_Context_ReleaseContext (MonoAppContext *ctx)
2838 * NOTE: Since finalizers are unreliable for the purposes of ensuring
2839 * cleanup in exceptional circumstances, we don't actually do any
2840 * cleanup work here. We instead do this via a reference queue.
2843 //g_print ("Releasing context %d in domain %d\n", ctx->context_id, ctx->domain_id);
2845 mono_profiler_context_unloaded (ctx);
2849 mono_thread_init_tls (void)
2851 MONO_FAST_TLS_INIT (tls_current_object);
2852 mono_native_tls_alloc (¤t_object_key, NULL);
2855 void mono_thread_init (MonoThreadStartCB start_cb,
2856 MonoThreadAttachCB attach_cb)
2858 mono_coop_mutex_init_recursive (&threads_mutex);
2860 mono_os_mutex_init_recursive(&interlocked_mutex);
2861 mono_os_mutex_init_recursive(&joinable_threads_mutex);
2863 mono_os_event_init (&background_change_event, FALSE);
2865 mono_init_static_data_info (&thread_static_info);
2866 mono_init_static_data_info (&context_static_info);
2868 THREAD_DEBUG (g_message ("%s: Allocated current_object_key %d", __func__, current_object_key));
2870 mono_thread_start_cb = start_cb;
2871 mono_thread_attach_cb = attach_cb;
2874 void mono_thread_cleanup (void)
2876 #if !defined(RUN_IN_SUBTHREAD) && !defined(HOST_WIN32)
2877 /* The main thread must abandon any held mutexes (particularly
2878 * important for named mutexes as they are shared across
2879 * processes, see bug 74680.) This will happen when the
2880 * thread exits, but if it's not running in a subthread it
2881 * won't exit in time.
2883 mono_w32mutex_abandon ();
2887 /* This stuff needs more testing, it seems one of these
2888 * critical sections can be locked when mono_thread_cleanup is
2891 mono_coop_mutex_destroy (&threads_mutex);
2892 mono_os_mutex_destroy (&interlocked_mutex);
2893 mono_os_mutex_destroy (&delayed_free_table_mutex);
2894 mono_os_mutex_destroy (&small_id_mutex);
2895 mono_os_event_destroy (&background_change_event);
2898 mono_native_tls_free (current_object_key);
2902 mono_threads_install_cleanup (MonoThreadCleanupFunc func)
2904 mono_thread_cleanup_fn = func;
2908 mono_thread_set_manage_callback (MonoThread *thread, MonoThreadManageCallback func)
2910 thread->internal_thread->manage_callback = func;
2914 static void print_tids (gpointer key, gpointer value, gpointer user)
2916 /* GPOINTER_TO_UINT breaks horribly if sizeof(void *) >
2917 * sizeof(uint) and a cast to uint would overflow
2919 /* Older versions of glib don't have G_GSIZE_FORMAT, so just
2920 * print this as a pointer.
2922 g_message ("Waiting for: %p", key);
2927 MonoThreadHandle *handles[MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
2928 MonoInternalThread *threads[MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
2933 wait_for_tids (struct wait_data *wait, guint32 timeout)
2936 MonoThreadInfoWaitRet ret;
2938 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
2941 ret = mono_thread_info_wait_multiple_handle(wait->handles, wait->num, NULL, TRUE, timeout, TRUE);
2944 if(ret==MONO_THREAD_INFO_WAIT_RET_FAILED) {
2945 /* See the comment in build_wait_tids() */
2946 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
2950 for(i=0; i<wait->num; i++)
2951 mono_threads_close_thread_handle (wait->handles [i]);
2953 if (ret == MONO_THREAD_INFO_WAIT_RET_TIMEOUT)
2956 for(i=0; i<wait->num; i++) {
2957 MonoInternalThread *internal;
2959 internal = wait->threads [i];
2961 mono_threads_lock ();
2962 if (mono_g_hash_table_lookup (threads, (gpointer) internal->tid) == internal)
2963 g_error ("%s: failed to call mono_thread_detach_internal on thread %p, InternalThread: %p", __func__, internal->tid, internal);
2964 mono_threads_unlock ();
2968 static void wait_for_tids_or_state_change (struct wait_data *wait, guint32 timeout)
2971 MonoThreadInfoWaitRet ret;
2973 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
2975 /* Add the thread state change event, so it wakes
2976 * up if a thread changes to background mode. */
2979 ret = mono_thread_info_wait_multiple_handle (wait->handles, wait->num, &background_change_event, FALSE, timeout, TRUE);
2982 if(ret==MONO_THREAD_INFO_WAIT_RET_FAILED) {
2983 /* See the comment in build_wait_tids() */
2984 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
2988 for(i=0; i<wait->num; i++)
2989 mono_threads_close_thread_handle (wait->handles [i]);
2991 if (ret == MONO_THREAD_INFO_WAIT_RET_TIMEOUT)
2994 if (ret < wait->num) {
2995 MonoInternalThread *internal;
2997 internal = wait->threads [ret];
2999 mono_threads_lock ();
3000 if (mono_g_hash_table_lookup (threads, (gpointer) internal->tid) == internal)
3001 g_error ("%s: failed to call mono_thread_detach_internal on thread %p, InternalThread: %p", __func__, internal->tid, internal);
3002 mono_threads_unlock ();
3006 static void build_wait_tids (gpointer key, gpointer value, gpointer user)
3008 struct wait_data *wait=(struct wait_data *)user;
3010 if(wait->num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS - 1) {
3011 MonoInternalThread *thread=(MonoInternalThread *)value;
3013 /* Ignore background threads, we abort them later */
3014 /* Do not lock here since it is not needed and the caller holds threads_lock */
3015 if (thread->state & ThreadState_Background) {
3016 THREAD_DEBUG (g_message ("%s: ignoring background thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3017 return; /* just leave, ignore */
3020 if (mono_gc_is_finalizer_internal_thread (thread)) {
3021 THREAD_DEBUG (g_message ("%s: ignoring finalizer thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3025 if (thread == mono_thread_internal_current ()) {
3026 THREAD_DEBUG (g_message ("%s: ignoring current thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3030 if (mono_thread_get_main () && (thread == mono_thread_get_main ()->internal_thread)) {
3031 THREAD_DEBUG (g_message ("%s: ignoring main thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3035 if (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE) {
3036 THREAD_DEBUG (g_message ("%s: ignoring thread %" G_GSIZE_FORMAT "with DONT_MANAGE flag set.", __func__, (gsize)thread->tid));
3040 THREAD_DEBUG (g_message ("%s: Invoking mono_thread_manage callback on thread %p", __func__, thread));
3041 if ((thread->manage_callback == NULL) || (thread->manage_callback (thread->root_domain_thread) == TRUE)) {
3042 wait->handles[wait->num]=mono_threads_open_thread_handle (thread->handle);
3043 wait->threads[wait->num]=thread;
3046 THREAD_DEBUG (g_message ("%s: adding thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3048 THREAD_DEBUG (g_message ("%s: ignoring (because of callback) thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3053 /* Just ignore the rest, we can't do anything with
3060 remove_and_abort_threads (gpointer key, gpointer value, gpointer user)
3062 struct wait_data *wait=(struct wait_data *)user;
3063 MonoNativeThreadId self = mono_native_thread_id_get ();
3064 MonoInternalThread *thread = (MonoInternalThread *)value;
3066 if (wait->num >= MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS)
3069 /* The finalizer thread is not a background thread */
3070 if (!mono_native_thread_id_equals (thread_get_tid (thread), self)
3071 && (thread->state & ThreadState_Background) != 0
3072 && (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE) == 0
3074 wait->handles[wait->num] = mono_threads_open_thread_handle (thread->handle);
3075 wait->threads[wait->num] = thread;
3078 THREAD_DEBUG (g_print ("%s: Aborting id: %"G_GSIZE_FORMAT"\n", __func__, (gsize)thread->tid));
3079 mono_thread_internal_abort (thread);
3083 return !mono_native_thread_id_equals (thread_get_tid (thread), self)
3084 && !mono_gc_is_finalizer_internal_thread (thread);
3088 * mono_threads_set_shutting_down:
3090 * Is called by a thread that wants to shut down Mono. If the runtime is already
3091 * shutting down, the calling thread is suspended/stopped, and this function never
3095 mono_threads_set_shutting_down (void)
3097 MonoInternalThread *current_thread = mono_thread_internal_current ();
3099 mono_threads_lock ();
3101 if (shutting_down) {
3102 mono_threads_unlock ();
3104 /* Make sure we're properly suspended/stopped */
3106 LOCK_THREAD (current_thread);
3108 if ((current_thread->state & ThreadState_SuspendRequested) ||
3109 (current_thread->state & ThreadState_AbortRequested) ||
3110 (current_thread->state & ThreadState_StopRequested)) {
3111 UNLOCK_THREAD (current_thread);
3112 mono_thread_execute_interruption ();
3114 current_thread->state |= ThreadState_Stopped;
3115 UNLOCK_THREAD (current_thread);
3118 /*since we're killing the thread, detach it.*/
3119 mono_thread_detach_internal (current_thread);
3121 /* Wake up other threads potentially waiting for us */
3122 mono_thread_info_exit (0);
3124 shutting_down = TRUE;
3126 /* Not really a background state change, but this will
3127 * interrupt the main thread if it is waiting for all
3128 * the other threads.
3130 mono_os_event_set (&background_change_event);
3132 mono_threads_unlock ();
3136 void mono_thread_manage (void)
3138 struct wait_data wait_data;
3139 struct wait_data *wait = &wait_data;
3141 memset (wait, 0, sizeof (struct wait_data));
3142 /* join each thread that's still running */
3143 THREAD_DEBUG (g_message ("%s: Joining each running thread...", __func__));
3145 mono_threads_lock ();
3147 THREAD_DEBUG (g_message("%s: No threads", __func__));
3148 mono_threads_unlock ();
3151 mono_threads_unlock ();
3154 mono_threads_lock ();
3155 if (shutting_down) {
3156 /* somebody else is shutting down */
3157 mono_threads_unlock ();
3160 THREAD_DEBUG (g_message ("%s: There are %d threads to join", __func__, mono_g_hash_table_size (threads));
3161 mono_g_hash_table_foreach (threads, print_tids, NULL));
3163 mono_os_event_reset (&background_change_event);
3165 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3166 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3167 mono_g_hash_table_foreach (threads, build_wait_tids, wait);
3168 mono_threads_unlock ();
3170 /* Something to wait for */
3171 wait_for_tids_or_state_change (wait, INFINITE);
3173 THREAD_DEBUG (g_message ("%s: I have %d threads after waiting.", __func__, wait->num));
3174 } while(wait->num>0);
3176 /* Mono is shutting down, so just wait for the end */
3177 if (!mono_runtime_try_shutdown ()) {
3178 /*FIXME mono_thread_suspend probably should call mono_thread_execute_interruption when self interrupting. */
3179 mono_thread_suspend (mono_thread_internal_current ());
3180 mono_thread_execute_interruption ();
3184 * Remove everything but the finalizer thread and self.
3185 * Also abort all the background threads
3188 mono_threads_lock ();
3191 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3192 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3193 mono_g_hash_table_foreach_remove (threads, remove_and_abort_threads, wait);
3195 mono_threads_unlock ();
3197 THREAD_DEBUG (g_message ("%s: wait->num is now %d", __func__, wait->num));
3199 /* Something to wait for */
3200 wait_for_tids (wait, INFINITE);
3202 } while (wait->num > 0);
3205 * give the subthreads a chance to really quit (this is mainly needed
3206 * to get correct user and system times from getrusage/wait/time(1)).
3207 * This could be removed if we avoid pthread_detach() and use pthread_join().
3209 mono_thread_info_yield ();
3213 collect_threads_for_suspend (gpointer key, gpointer value, gpointer user_data)
3215 MonoInternalThread *thread = (MonoInternalThread*)value;
3216 struct wait_data *wait = (struct wait_data*)user_data;
3219 * We try to exclude threads early, to avoid running into the MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS
3221 * This needs no locking.
3223 if ((thread->state & ThreadState_Suspended) != 0 ||
3224 (thread->state & ThreadState_Stopped) != 0)
3227 if (wait->num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS) {
3228 wait->handles [wait->num] = mono_threads_open_thread_handle (thread->handle);
3229 wait->threads [wait->num] = thread;
3235 * mono_thread_suspend_all_other_threads:
3237 * Suspend all managed threads except the finalizer thread and this thread. It is
3238 * not possible to resume them later.
3240 void mono_thread_suspend_all_other_threads (void)
3242 struct wait_data wait_data;
3243 struct wait_data *wait = &wait_data;
3245 MonoNativeThreadId self = mono_native_thread_id_get ();
3246 guint32 eventidx = 0;
3247 gboolean starting, finished;
3249 memset (wait, 0, sizeof (struct wait_data));
3251 * The other threads could be in an arbitrary state at this point, i.e.
3252 * they could be starting up, shutting down etc. This means that there could be
3253 * threads which are not even in the threads hash table yet.
3257 * First we set a barrier which will be checked by all threads before they
3258 * are added to the threads hash table, and they will exit if the flag is set.
3259 * This ensures that no threads could be added to the hash later.
3260 * We will use shutting_down as the barrier for now.
3262 g_assert (shutting_down);
3265 * We make multiple calls to WaitForMultipleObjects since:
3266 * - we can only wait for MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS threads
3267 * - some threads could exit without becoming suspended
3272 * Make a copy of the hashtable since we can't do anything with
3273 * threads while threads_mutex is held.
3276 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3277 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3278 mono_threads_lock ();
3279 mono_g_hash_table_foreach (threads, collect_threads_for_suspend, wait);
3280 mono_threads_unlock ();
3283 /* Get the suspended events that we'll be waiting for */
3284 for (i = 0; i < wait->num; ++i) {
3285 MonoInternalThread *thread = wait->threads [i];
3287 if (mono_native_thread_id_equals (thread_get_tid (thread), self)
3288 || mono_gc_is_finalizer_internal_thread (thread)
3289 || (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE)
3291 //mono_threads_close_thread_handle (wait->handles [i]);
3292 wait->threads [i] = NULL; /* ignore this thread in next loop */
3296 LOCK_THREAD (thread);
3298 if ((thread->state & ThreadState_Suspended) != 0 ||
3299 (thread->state & ThreadState_StopRequested) != 0 ||
3300 (thread->state & ThreadState_Stopped) != 0) {
3301 UNLOCK_THREAD (thread);
3302 mono_threads_close_thread_handle (wait->handles [i]);
3303 wait->threads [i] = NULL; /* ignore this thread in next loop */
3309 /* Convert abort requests into suspend requests */
3310 if ((thread->state & ThreadState_AbortRequested) != 0)
3311 thread->state &= ~ThreadState_AbortRequested;
3313 thread->state |= ThreadState_SuspendRequested;
3314 if (mono_threads_is_coop_enabled ())
3315 mono_os_event_reset (thread->suspended);
3317 /* Signal the thread to suspend + calls UNLOCK_THREAD (thread) */
3318 async_suspend_internal (thread, TRUE);
3320 if (eventidx <= 0) {
3322 * If there are threads which are starting up, we wait until they
3323 * are suspended when they try to register in the threads hash.
3324 * This is guaranteed to finish, since the threads which can create new
3325 * threads get suspended after a while.
3326 * FIXME: The finalizer thread can still create new threads.
3328 mono_threads_lock ();
3329 if (threads_starting_up)
3330 starting = mono_g_hash_table_size (threads_starting_up) > 0;
3333 mono_threads_unlock ();
3335 mono_thread_info_sleep (100, NULL);
3343 MonoInternalThread *thread;
3344 MonoStackFrameInfo *frames;
3345 int nframes, max_frames;
3346 int nthreads, max_threads;
3347 MonoInternalThread **threads;
3348 } ThreadDumpUserData;
3350 static gboolean thread_dump_requested;
3352 /* This needs to be async safe */
3354 collect_frame (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
3356 ThreadDumpUserData *ud = (ThreadDumpUserData *)data;
3358 if (ud->nframes < ud->max_frames) {
3359 memcpy (&ud->frames [ud->nframes], frame, sizeof (MonoStackFrameInfo));
3366 /* This needs to be async safe */
3367 static SuspendThreadResult
3368 get_thread_dump (MonoThreadInfo *info, gpointer ud)
3370 ThreadDumpUserData *user_data = (ThreadDumpUserData *)ud;
3371 MonoInternalThread *thread = user_data->thread;
3374 /* This no longer works with remote unwinding */
3375 g_string_append_printf (text, " tid=0x%p this=0x%p ", (gpointer)(gsize)thread->tid, thread);
3376 mono_thread_internal_describe (thread, text);
3377 g_string_append (text, "\n");
3380 if (thread == mono_thread_internal_current ())
3381 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (collect_frame, NULL, MONO_UNWIND_SIGNAL_SAFE, ud);
3383 mono_get_eh_callbacks ()->mono_walk_stack_with_state (collect_frame, mono_thread_info_get_suspend_state (info), MONO_UNWIND_SIGNAL_SAFE, ud);
3385 return MonoResumeThread;
3389 int nthreads, max_threads;
3390 MonoInternalThread **threads;
3391 } CollectThreadsUserData;
3394 collect_thread (gpointer key, gpointer value, gpointer user)
3396 CollectThreadsUserData *ud = (CollectThreadsUserData *)user;
3397 MonoInternalThread *thread = (MonoInternalThread *)value;
3399 if (ud->nthreads < ud->max_threads)
3400 ud->threads [ud->nthreads ++] = thread;
3404 * Collect running threads into the THREADS array.
3405 * THREADS should be an array allocated on the stack.
3408 collect_threads (MonoInternalThread **thread_array, int max_threads)
3410 CollectThreadsUserData ud;
3412 memset (&ud, 0, sizeof (ud));
3413 /* This array contains refs, but its on the stack, so its ok */
3414 ud.threads = thread_array;
3415 ud.max_threads = max_threads;
3417 mono_threads_lock ();
3418 mono_g_hash_table_foreach (threads, collect_thread, &ud);
3419 mono_threads_unlock ();
3425 dump_thread (MonoInternalThread *thread, ThreadDumpUserData *ud)
3427 GString* text = g_string_new (0);
3429 GError *error = NULL;
3432 ud->thread = thread;
3435 /* Collect frames for the thread */
3436 if (thread == mono_thread_internal_current ()) {
3437 get_thread_dump (mono_thread_info_current (), ud);
3439 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), FALSE, get_thread_dump, ud);
3443 * Do all the non async-safe work outside of get_thread_dump.
3446 name = g_utf16_to_utf8 (thread->name, thread->name_len, NULL, NULL, &error);
3448 g_string_append_printf (text, "\n\"%s\"", name);
3451 else if (thread->threadpool_thread) {
3452 g_string_append (text, "\n\"<threadpool thread>\"");
3454 g_string_append (text, "\n\"<unnamed thread>\"");
3457 for (i = 0; i < ud->nframes; ++i) {
3458 MonoStackFrameInfo *frame = &ud->frames [i];
3459 MonoMethod *method = NULL;
3461 if (frame->type == FRAME_TYPE_MANAGED)
3462 method = mono_jit_info_get_method (frame->ji);
3465 gchar *location = mono_debug_print_stack_frame (method, frame->native_offset, frame->domain);
3466 g_string_append_printf (text, " %s\n", location);
3469 g_string_append_printf (text, " at <unknown> <0x%05x>\n", frame->native_offset);
3473 fprintf (stdout, "%s", text->str);
3475 #if PLATFORM_WIN32 && TARGET_WIN32 && _DEBUG
3476 OutputDebugStringA(text->str);
3479 g_string_free (text, TRUE);
3484 mono_threads_perform_thread_dump (void)
3486 ThreadDumpUserData ud;
3487 MonoInternalThread *thread_array [128];
3488 int tindex, nthreads;
3490 if (!thread_dump_requested)
3493 printf ("Full thread dump:\n");
3495 /* Make a copy of the threads hash to avoid doing work inside threads_lock () */
3496 nthreads = collect_threads (thread_array, 128);
3498 memset (&ud, 0, sizeof (ud));
3499 ud.frames = g_new0 (MonoStackFrameInfo, 256);
3500 ud.max_frames = 256;
3502 for (tindex = 0; tindex < nthreads; ++tindex)
3503 dump_thread (thread_array [tindex], &ud);
3507 thread_dump_requested = FALSE;
3510 /* Obtain the thread dump of all threads */
3512 mono_threads_get_thread_dump (MonoArray **out_threads, MonoArray **out_stack_frames, MonoError *error)
3515 ThreadDumpUserData ud;
3516 MonoInternalThread *thread_array [128];
3517 MonoDomain *domain = mono_domain_get ();
3518 MonoDebugSourceLocation *location;
3519 int tindex, nthreads;
3521 mono_error_init (error);
3523 *out_threads = NULL;
3524 *out_stack_frames = NULL;
3526 /* Make a copy of the threads hash to avoid doing work inside threads_lock () */
3527 nthreads = collect_threads (thread_array, 128);
3529 memset (&ud, 0, sizeof (ud));
3530 ud.frames = g_new0 (MonoStackFrameInfo, 256);
3531 ud.max_frames = 256;
3533 *out_threads = mono_array_new_checked (domain, mono_defaults.thread_class, nthreads, error);
3536 *out_stack_frames = mono_array_new_checked (domain, mono_defaults.array_class, nthreads, error);
3540 for (tindex = 0; tindex < nthreads; ++tindex) {
3541 MonoInternalThread *thread = thread_array [tindex];
3542 MonoArray *thread_frames;
3548 /* Collect frames for the thread */
3549 if (thread == mono_thread_internal_current ()) {
3550 get_thread_dump (mono_thread_info_current (), &ud);
3552 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), FALSE, get_thread_dump, &ud);
3555 mono_array_setref_fast (*out_threads, tindex, mono_thread_current_for_thread (thread));
3557 thread_frames = mono_array_new_checked (domain, mono_defaults.stack_frame_class, ud.nframes, error);
3560 mono_array_setref_fast (*out_stack_frames, tindex, thread_frames);
3562 for (i = 0; i < ud.nframes; ++i) {
3563 MonoStackFrameInfo *frame = &ud.frames [i];
3564 MonoMethod *method = NULL;
3565 MonoStackFrame *sf = (MonoStackFrame *)mono_object_new_checked (domain, mono_defaults.stack_frame_class, error);
3569 sf->native_offset = frame->native_offset;
3571 if (frame->type == FRAME_TYPE_MANAGED)
3572 method = mono_jit_info_get_method (frame->ji);
3575 sf->method_address = (gsize) frame->ji->code_start;
3577 MonoReflectionMethod *rm = mono_method_get_object_checked (domain, method, NULL, error);
3580 MONO_OBJECT_SETREF (sf, method, rm);
3582 location = mono_debug_lookup_source_location (method, frame->native_offset, domain);
3584 sf->il_offset = location->il_offset;
3586 if (location && location->source_file) {
3587 MONO_OBJECT_SETREF (sf, filename, mono_string_new (domain, location->source_file));
3588 sf->line = location->row;
3589 sf->column = location->column;
3591 mono_debug_free_source_location (location);
3596 mono_array_setref (thread_frames, i, sf);
3602 return is_ok (error);
3606 * mono_threads_request_thread_dump:
3608 * Ask all threads except the current to print their stacktrace to stdout.
3611 mono_threads_request_thread_dump (void)
3613 /*The new thread dump code runs out of the finalizer thread. */
3614 thread_dump_requested = TRUE;
3615 mono_gc_finalize_notify ();
3620 gint allocated; /* +1 so that refs [allocated] == NULL */
3624 typedef struct ref_stack RefStack;
3627 ref_stack_new (gint initial_size)
3631 initial_size = MAX (initial_size, 16) + 1;
3632 rs = g_new0 (RefStack, 1);
3633 rs->refs = g_new0 (gpointer, initial_size);
3634 rs->allocated = initial_size;
3639 ref_stack_destroy (gpointer ptr)
3641 RefStack *rs = (RefStack *)ptr;
3650 ref_stack_push (RefStack *rs, gpointer ptr)
3652 g_assert (rs != NULL);
3654 if (rs->bottom >= rs->allocated) {
3655 rs->refs = (void **)g_realloc (rs->refs, rs->allocated * 2 * sizeof (gpointer) + 1);
3656 rs->allocated <<= 1;
3657 rs->refs [rs->allocated] = NULL;
3659 rs->refs [rs->bottom++] = ptr;
3663 ref_stack_pop (RefStack *rs)
3665 if (rs == NULL || rs->bottom == 0)
3669 rs->refs [rs->bottom] = NULL;
3673 ref_stack_find (RefStack *rs, gpointer ptr)
3680 for (refs = rs->refs; refs && *refs; refs++) {
3688 * mono_thread_push_appdomain_ref:
3690 * Register that the current thread may have references to objects in domain
3691 * @domain on its stack. Each call to this function should be paired with a
3692 * call to pop_appdomain_ref.
3695 mono_thread_push_appdomain_ref (MonoDomain *domain)
3697 MonoInternalThread *thread = mono_thread_internal_current ();
3700 /* printf ("PUSH REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, domain->friendly_name); */
3701 SPIN_LOCK (thread->lock_thread_id);
3702 if (thread->appdomain_refs == NULL)
3703 thread->appdomain_refs = ref_stack_new (16);
3704 ref_stack_push ((RefStack *)thread->appdomain_refs, domain);
3705 SPIN_UNLOCK (thread->lock_thread_id);
3710 mono_thread_pop_appdomain_ref (void)
3712 MonoInternalThread *thread = mono_thread_internal_current ();
3715 /* printf ("POP REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, ((MonoDomain*)(thread->appdomain_refs->data))->friendly_name); */
3716 SPIN_LOCK (thread->lock_thread_id);
3717 ref_stack_pop ((RefStack *)thread->appdomain_refs);
3718 SPIN_UNLOCK (thread->lock_thread_id);
3723 mono_thread_internal_has_appdomain_ref (MonoInternalThread *thread, MonoDomain *domain)
3726 SPIN_LOCK (thread->lock_thread_id);
3727 res = ref_stack_find ((RefStack *)thread->appdomain_refs, domain);
3728 SPIN_UNLOCK (thread->lock_thread_id);
3733 mono_thread_has_appdomain_ref (MonoThread *thread, MonoDomain *domain)
3735 return mono_thread_internal_has_appdomain_ref (thread->internal_thread, domain);
3738 typedef struct abort_appdomain_data {
3739 struct wait_data wait;
3741 } abort_appdomain_data;
3744 collect_appdomain_thread (gpointer key, gpointer value, gpointer user_data)
3746 MonoInternalThread *thread = (MonoInternalThread*)value;
3747 abort_appdomain_data *data = (abort_appdomain_data*)user_data;
3748 MonoDomain *domain = data->domain;
3750 if (mono_thread_internal_has_appdomain_ref (thread, domain)) {
3751 /* printf ("ABORTING THREAD %p BECAUSE IT REFERENCES DOMAIN %s.\n", thread->tid, domain->friendly_name); */
3753 if(data->wait.num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS) {
3754 data->wait.handles [data->wait.num] = mono_threads_open_thread_handle (thread->handle);
3755 data->wait.threads [data->wait.num] = thread;
3758 /* Just ignore the rest, we can't do anything with
3766 * mono_threads_abort_appdomain_threads:
3768 * Abort threads which has references to the given appdomain.
3771 mono_threads_abort_appdomain_threads (MonoDomain *domain, int timeout)
3773 #ifdef __native_client__
3777 abort_appdomain_data user_data;
3779 int orig_timeout = timeout;
3782 THREAD_DEBUG (g_message ("%s: starting abort", __func__));
3784 start_time = mono_msec_ticks ();
3786 mono_threads_lock ();
3788 user_data.domain = domain;
3789 user_data.wait.num = 0;
3790 /* This shouldn't take any locks */
3791 mono_g_hash_table_foreach (threads, collect_appdomain_thread, &user_data);
3792 mono_threads_unlock ();
3794 if (user_data.wait.num > 0) {
3795 /* Abort the threads outside the threads lock */
3796 for (i = 0; i < user_data.wait.num; ++i)
3797 mono_thread_internal_abort (user_data.wait.threads [i]);
3800 * We should wait for the threads either to abort, or to leave the
3801 * domain. We can't do the latter, so we wait with a timeout.
3803 wait_for_tids (&user_data.wait, 100);
3806 /* Update remaining time */
3807 timeout -= mono_msec_ticks () - start_time;
3808 start_time = mono_msec_ticks ();
3810 if (orig_timeout != -1 && timeout < 0)
3813 while (user_data.wait.num > 0);
3815 THREAD_DEBUG (g_message ("%s: abort done", __func__));
3821 clear_cached_culture (gpointer key, gpointer value, gpointer user_data)
3823 MonoInternalThread *thread = (MonoInternalThread*)value;
3824 MonoDomain *domain = (MonoDomain*)user_data;
3827 /* No locking needed here */
3828 /* FIXME: why no locking? writes to the cache are protected with synch_cs above */
3830 if (thread->cached_culture_info) {
3831 for (i = 0; i < NUM_CACHED_CULTURES * 2; ++i) {
3832 MonoObject *obj = mono_array_get (thread->cached_culture_info, MonoObject*, i);
3833 if (obj && obj->vtable->domain == domain)
3834 mono_array_set (thread->cached_culture_info, MonoObject*, i, NULL);
3840 * mono_threads_clear_cached_culture:
3842 * Clear the cached_current_culture from all threads if it is in the
3846 mono_threads_clear_cached_culture (MonoDomain *domain)
3848 mono_threads_lock ();
3849 mono_g_hash_table_foreach (threads, clear_cached_culture, domain);
3850 mono_threads_unlock ();
3854 * mono_thread_get_undeniable_exception:
3856 * Return an exception which needs to be raised when leaving a catch clause.
3857 * This is used for undeniable exception propagation.
3860 mono_thread_get_undeniable_exception (void)
3862 MonoInternalThread *thread = mono_thread_internal_current ();
3864 if (thread && thread->abort_exc && !is_running_protected_wrapper ()) {
3866 * FIXME: Clear the abort exception and return an AppDomainUnloaded
3867 * exception if the thread no longer references a dying appdomain.
3869 thread->abort_exc->trace_ips = NULL;
3870 thread->abort_exc->stack_trace = NULL;
3871 return thread->abort_exc;
3877 #if MONO_SMALL_CONFIG
3878 #define NUM_STATIC_DATA_IDX 4
3879 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
3883 #define NUM_STATIC_DATA_IDX 8
3884 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
3885 1024, 4096, 16384, 65536, 262144, 1048576, 4194304, 16777216
3889 static MonoBitSet *thread_reference_bitmaps [NUM_STATIC_DATA_IDX];
3890 static MonoBitSet *context_reference_bitmaps [NUM_STATIC_DATA_IDX];
3893 mark_slots (void *addr, MonoBitSet **bitmaps, MonoGCMarkFunc mark_func, void *gc_data)
3895 gpointer *static_data = (gpointer *)addr;
3897 for (int i = 0; i < NUM_STATIC_DATA_IDX; ++i) {
3898 void **ptr = (void **)static_data [i];
3903 MONO_BITSET_FOREACH (bitmaps [i], idx, {
3904 void **p = ptr + idx;
3907 mark_func ((MonoObject**)p, gc_data);
3913 mark_tls_slots (void *addr, MonoGCMarkFunc mark_func, void *gc_data)
3915 mark_slots (addr, thread_reference_bitmaps, mark_func, gc_data);
3919 mark_ctx_slots (void *addr, MonoGCMarkFunc mark_func, void *gc_data)
3921 mark_slots (addr, context_reference_bitmaps, mark_func, gc_data);
3925 * mono_alloc_static_data
3927 * Allocate memory blocks for storing threads or context static data
3930 mono_alloc_static_data (gpointer **static_data_ptr, guint32 offset, gboolean threadlocal)
3932 guint idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
3935 gpointer* static_data = *static_data_ptr;
3937 static MonoGCDescriptor tls_desc = MONO_GC_DESCRIPTOR_NULL;
3938 static MonoGCDescriptor ctx_desc = MONO_GC_DESCRIPTOR_NULL;
3940 if (mono_gc_user_markers_supported ()) {
3941 if (tls_desc == MONO_GC_DESCRIPTOR_NULL)
3942 tls_desc = mono_gc_make_root_descr_user (mark_tls_slots);
3944 if (ctx_desc == MONO_GC_DESCRIPTOR_NULL)
3945 ctx_desc = mono_gc_make_root_descr_user (mark_ctx_slots);
3948 static_data = (void **)mono_gc_alloc_fixed (static_data_size [0], threadlocal ? tls_desc : ctx_desc,
3949 threadlocal ? MONO_ROOT_SOURCE_THREAD_STATIC : MONO_ROOT_SOURCE_CONTEXT_STATIC,
3950 threadlocal ? "managed thread-static variables" : "managed context-static variables");
3951 *static_data_ptr = static_data;
3952 static_data [0] = static_data;
3955 for (i = 1; i <= idx; ++i) {
3956 if (static_data [i])
3959 if (mono_gc_user_markers_supported ())
3960 static_data [i] = g_malloc0 (static_data_size [i]);
3962 static_data [i] = mono_gc_alloc_fixed (static_data_size [i], MONO_GC_DESCRIPTOR_NULL,
3963 threadlocal ? MONO_ROOT_SOURCE_THREAD_STATIC : MONO_ROOT_SOURCE_CONTEXT_STATIC,
3964 threadlocal ? "managed thread-static variables" : "managed context-static variables");
3969 mono_free_static_data (gpointer* static_data)
3972 for (i = 1; i < NUM_STATIC_DATA_IDX; ++i) {
3973 gpointer p = static_data [i];
3977 * At this point, the static data pointer array is still registered with the
3978 * GC, so must ensure that mark_tls_slots() will not encounter any invalid
3979 * data. Freeing the individual arrays without first nulling their slots
3980 * would make it possible for mark_tls/ctx_slots() to encounter a pointer to
3981 * such an already freed array. See bug #13813.
3983 static_data [i] = NULL;
3984 mono_memory_write_barrier ();
3985 if (mono_gc_user_markers_supported ())
3988 mono_gc_free_fixed (p);
3990 mono_gc_free_fixed (static_data);
3994 * mono_init_static_data_info
3996 * Initializes static data counters
3998 static void mono_init_static_data_info (StaticDataInfo *static_data)
4000 static_data->idx = 0;
4001 static_data->offset = 0;
4002 static_data->freelist = NULL;
4006 * mono_alloc_static_data_slot
4008 * Generates an offset for static data. static_data contains the counters
4009 * used to generate it.
4012 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align)
4014 if (!static_data->idx && !static_data->offset) {
4016 * we use the first chunk of the first allocation also as
4017 * an array for the rest of the data
4019 static_data->offset = sizeof (gpointer) * NUM_STATIC_DATA_IDX;
4021 static_data->offset += align - 1;
4022 static_data->offset &= ~(align - 1);
4023 if (static_data->offset + size >= static_data_size [static_data->idx]) {
4024 static_data->idx ++;
4025 g_assert (size <= static_data_size [static_data->idx]);
4026 g_assert (static_data->idx < NUM_STATIC_DATA_IDX);
4027 static_data->offset = 0;
4029 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (static_data->idx, static_data->offset, 0);
4030 static_data->offset += size;
4035 * LOCKING: requires that threads_mutex is held
4038 context_adjust_static_data (MonoAppContext *ctx)
4040 if (context_static_info.offset || context_static_info.idx > 0) {
4041 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (context_static_info.idx, context_static_info.offset, 0);
4042 mono_alloc_static_data (&ctx->static_data, offset, FALSE);
4043 ctx->data->static_data = ctx->static_data;
4048 * LOCKING: requires that threads_mutex is held
4051 alloc_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
4053 MonoInternalThread *thread = (MonoInternalThread *)value;
4054 guint32 offset = GPOINTER_TO_UINT (user);
4056 mono_alloc_static_data (&(thread->static_data), offset, TRUE);
4060 * LOCKING: requires that threads_mutex is held
4063 alloc_context_static_data_helper (gpointer key, gpointer value, gpointer user)
4065 MonoAppContext *ctx = (MonoAppContext *) mono_gchandle_get_target (GPOINTER_TO_INT (key));
4070 guint32 offset = GPOINTER_TO_UINT (user);
4071 mono_alloc_static_data (&ctx->static_data, offset, FALSE);
4072 ctx->data->static_data = ctx->static_data;
4075 static StaticDataFreeList*
4076 search_slot_in_freelist (StaticDataInfo *static_data, guint32 size, guint32 align)
4078 StaticDataFreeList* prev = NULL;
4079 StaticDataFreeList* tmp = static_data->freelist;
4081 if (tmp->size == size) {
4083 prev->next = tmp->next;
4085 static_data->freelist = tmp->next;
4094 #if SIZEOF_VOID_P == 4
4101 update_reference_bitmap (MonoBitSet **sets, guint32 offset, uintptr_t *bitmap, int numbits)
4103 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4105 sets [idx] = mono_bitset_new (static_data_size [idx] / sizeof (uintptr_t), 0);
4106 MonoBitSet *rb = sets [idx];
4107 offset = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
4108 offset /= sizeof (uintptr_t);
4109 /* offset is now the bitmap offset */
4110 for (int i = 0; i < numbits; ++i) {
4111 if (bitmap [i / sizeof (uintptr_t)] & (ONE_P << (i & (sizeof (uintptr_t) * 8 -1))))
4112 mono_bitset_set_fast (rb, offset + i);
4117 clear_reference_bitmap (MonoBitSet **sets, guint32 offset, guint32 size)
4119 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4120 MonoBitSet *rb = sets [idx];
4121 offset = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
4122 offset /= sizeof (uintptr_t);
4123 /* offset is now the bitmap offset */
4124 for (int i = 0; i < size / sizeof (uintptr_t); i++)
4125 mono_bitset_clear_fast (rb, offset + i);
4129 mono_alloc_special_static_data (guint32 static_type, guint32 size, guint32 align, uintptr_t *bitmap, int numbits)
4131 g_assert (static_type == SPECIAL_STATIC_THREAD || static_type == SPECIAL_STATIC_CONTEXT);
4133 StaticDataInfo *info;
4136 if (static_type == SPECIAL_STATIC_THREAD) {
4137 info = &thread_static_info;
4138 sets = thread_reference_bitmaps;
4140 info = &context_static_info;
4141 sets = context_reference_bitmaps;
4144 mono_threads_lock ();
4146 StaticDataFreeList *item = search_slot_in_freelist (info, size, align);
4150 offset = item->offset;
4153 offset = mono_alloc_static_data_slot (info, size, align);
4156 update_reference_bitmap (sets, offset, bitmap, numbits);
4158 if (static_type == SPECIAL_STATIC_THREAD) {
4159 /* This can be called during startup */
4160 if (threads != NULL)
4161 mono_g_hash_table_foreach (threads, alloc_thread_static_data_helper, GUINT_TO_POINTER (offset));
4163 if (contexts != NULL)
4164 g_hash_table_foreach (contexts, alloc_context_static_data_helper, GUINT_TO_POINTER (offset));
4166 ACCESS_SPECIAL_STATIC_OFFSET (offset, type) = SPECIAL_STATIC_OFFSET_TYPE_CONTEXT;
4169 mono_threads_unlock ();
4175 mono_get_special_static_data_for_thread (MonoInternalThread *thread, guint32 offset)
4177 guint32 static_type = ACCESS_SPECIAL_STATIC_OFFSET (offset, type);
4179 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4180 return get_thread_static_data (thread, offset);
4182 return get_context_static_data (thread->current_appcontext, offset);
4187 mono_get_special_static_data (guint32 offset)
4189 return mono_get_special_static_data_for_thread (mono_thread_internal_current (), offset);
4198 * LOCKING: requires that threads_mutex is held
4201 free_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
4203 MonoInternalThread *thread = (MonoInternalThread *)value;
4204 OffsetSize *data = (OffsetSize *)user;
4205 int idx = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, index);
4206 int off = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, offset);
4209 if (!thread->static_data || !thread->static_data [idx])
4211 ptr = ((char*) thread->static_data [idx]) + off;
4212 mono_gc_bzero_atomic (ptr, data->size);
4216 * LOCKING: requires that threads_mutex is held
4219 free_context_static_data_helper (gpointer key, gpointer value, gpointer user)
4221 MonoAppContext *ctx = (MonoAppContext *) mono_gchandle_get_target (GPOINTER_TO_INT (key));
4226 OffsetSize *data = (OffsetSize *)user;
4227 int idx = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, index);
4228 int off = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, offset);
4231 if (!ctx->static_data || !ctx->static_data [idx])
4234 ptr = ((char*) ctx->static_data [idx]) + off;
4235 mono_gc_bzero_atomic (ptr, data->size);
4239 do_free_special_slot (guint32 offset, guint32 size)
4241 guint32 static_type = ACCESS_SPECIAL_STATIC_OFFSET (offset, type);
4243 StaticDataInfo *info;
4245 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4246 info = &thread_static_info;
4247 sets = thread_reference_bitmaps;
4249 info = &context_static_info;
4250 sets = context_reference_bitmaps;
4253 guint32 data_offset = offset;
4254 ACCESS_SPECIAL_STATIC_OFFSET (data_offset, type) = 0;
4255 OffsetSize data = { data_offset, size };
4257 clear_reference_bitmap (sets, data.offset, data.size);
4259 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4260 if (threads != NULL)
4261 mono_g_hash_table_foreach (threads, free_thread_static_data_helper, &data);
4263 if (contexts != NULL)
4264 g_hash_table_foreach (contexts, free_context_static_data_helper, &data);
4267 if (!mono_runtime_is_shutting_down ()) {
4268 StaticDataFreeList *item = g_new0 (StaticDataFreeList, 1);
4270 item->offset = offset;
4273 item->next = info->freelist;
4274 info->freelist = item;
4279 do_free_special (gpointer key, gpointer value, gpointer data)
4281 MonoClassField *field = (MonoClassField *)key;
4282 guint32 offset = GPOINTER_TO_UINT (value);
4285 size = mono_type_size (field->type, &align);
4286 do_free_special_slot (offset, size);
4290 mono_alloc_special_static_data_free (GHashTable *special_static_fields)
4292 mono_threads_lock ();
4294 g_hash_table_foreach (special_static_fields, do_free_special, NULL);
4296 mono_threads_unlock ();
4300 static void CALLBACK dummy_apc (ULONG_PTR param)
4306 * mono_thread_execute_interruption
4308 * Performs the operation that the requested thread state requires (abort,
4311 static MonoException*
4312 mono_thread_execute_interruption (void)
4314 MonoInternalThread *thread = mono_thread_internal_current ();
4315 MonoThread *sys_thread = mono_thread_current ();
4317 LOCK_THREAD (thread);
4319 /* MonoThread::interruption_requested can only be changed with atomics */
4320 if (InterlockedCompareExchange (&thread->interruption_requested, FALSE, TRUE)) {
4321 /* this will consume pending APC calls */
4323 WaitForSingleObjectEx (GetCurrentThread(), 0, TRUE);
4325 InterlockedDecrement (&thread_interruption_requested);
4327 /* Clear the interrupted flag of the thread so it can wait again */
4328 mono_thread_info_clear_self_interrupt ();
4331 /* If there's a pending exception and an AbortRequested, the pending exception takes precedence */
4332 if (sys_thread->pending_exception) {
4335 exc = sys_thread->pending_exception;
4336 sys_thread->pending_exception = NULL;
4338 UNLOCK_THREAD (thread);
4340 } else if ((thread->state & ThreadState_AbortRequested) != 0) {
4341 UNLOCK_THREAD (thread);
4342 g_assert (sys_thread->pending_exception == NULL);
4343 if (thread->abort_exc == NULL) {
4345 * This might be racy, but it has to be called outside the lock
4346 * since it calls managed code.
4348 MONO_OBJECT_SETREF (thread, abort_exc, mono_get_exception_thread_abort ());
4350 return thread->abort_exc;
4352 else if ((thread->state & ThreadState_SuspendRequested) != 0) {
4353 /* calls UNLOCK_THREAD (thread) */
4354 self_suspend_internal ();
4357 else if ((thread->state & ThreadState_StopRequested) != 0) {
4358 /* FIXME: do this through the JIT? */
4360 UNLOCK_THREAD (thread);
4362 mono_thread_exit ();
4364 } else if (thread->thread_interrupt_requested) {
4366 thread->thread_interrupt_requested = FALSE;
4367 UNLOCK_THREAD (thread);
4369 return(mono_get_exception_thread_interrupted ());
4372 UNLOCK_THREAD (thread);
4378 * mono_thread_request_interruption
4380 * A signal handler can call this method to request the interruption of a
4381 * thread. The result of the interruption will depend on the current state of
4382 * the thread. If the result is an exception that needs to be throw, it is
4383 * provided as return value.
4386 mono_thread_request_interruption (gboolean running_managed)
4388 MonoInternalThread *thread = mono_thread_internal_current ();
4390 /* The thread may already be stopping */
4395 if (thread->interrupt_on_stop &&
4396 thread->state & ThreadState_StopRequested &&
4397 thread->state & ThreadState_Background)
4400 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4402 InterlockedIncrement (&thread_interruption_requested);
4404 if (!running_managed || is_running_protected_wrapper ()) {
4405 /* Can't stop while in unmanaged code. Increase the global interruption
4406 request count. When exiting the unmanaged method the count will be
4407 checked and the thread will be interrupted. */
4409 /* this will awake the thread if it is in WaitForSingleObject
4411 /* Our implementation of this function ignores the func argument */
4413 QueueUserAPC ((PAPCFUNC)dummy_apc, thread->native_handle, (ULONG_PTR)NULL);
4415 mono_thread_info_self_interrupt ();
4420 return mono_thread_execute_interruption ();
4424 /*This function should be called by a thread after it has exited all of
4425 * its handle blocks at interruption time.*/
4427 mono_thread_resume_interruption (void)
4429 MonoInternalThread *thread = mono_thread_internal_current ();
4430 gboolean still_aborting;
4432 /* The thread may already be stopping */
4436 LOCK_THREAD (thread);
4437 still_aborting = (thread->state & (ThreadState_AbortRequested|ThreadState_StopRequested)) != 0;
4438 UNLOCK_THREAD (thread);
4440 /*This can happen if the protected block called Thread::ResetAbort*/
4441 if (!still_aborting)
4444 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4446 InterlockedIncrement (&thread_interruption_requested);
4448 mono_thread_info_self_interrupt ();
4450 return mono_thread_execute_interruption ();
4453 gboolean mono_thread_interruption_requested ()
4455 if (thread_interruption_requested) {
4456 MonoInternalThread *thread = mono_thread_internal_current ();
4457 /* The thread may already be stopping */
4459 return (thread->interruption_requested);
4464 static MonoException*
4465 mono_thread_interruption_checkpoint_request (gboolean bypass_abort_protection)
4467 MonoInternalThread *thread = mono_thread_internal_current ();
4469 /* The thread may already be stopping */
4473 if (thread->interruption_requested && (bypass_abort_protection || !is_running_protected_wrapper ())) {
4474 MonoException* exc = mono_thread_execute_interruption ();
4482 * Performs the interruption of the current thread, if one has been requested,
4483 * and the thread is not running a protected wrapper.
4484 * Return the exception which needs to be thrown, if any.
4487 mono_thread_interruption_checkpoint (void)
4489 return mono_thread_interruption_checkpoint_request (FALSE);
4493 * Performs the interruption of the current thread, if one has been requested.
4494 * Return the exception which needs to be thrown, if any.
4497 mono_thread_force_interruption_checkpoint_noraise (void)
4499 return mono_thread_interruption_checkpoint_request (TRUE);
4503 * mono_set_pending_exception:
4505 * Set the pending exception of the current thread to EXC.
4506 * The exception will be thrown when execution returns to managed code.
4509 mono_set_pending_exception (MonoException *exc)
4511 MonoThread *thread = mono_thread_current ();
4513 /* The thread may already be stopping */
4517 MONO_OBJECT_SETREF (thread, pending_exception, exc);
4519 mono_thread_request_interruption (FALSE);
4523 * mono_thread_interruption_request_flag:
4525 * Returns the address of a flag that will be non-zero if an interruption has
4526 * been requested for a thread. The thread to interrupt may not be the current
4527 * thread, so an additional call to mono_thread_interruption_requested() or
4528 * mono_thread_interruption_checkpoint() is allways needed if the flag is not
4531 gint32* mono_thread_interruption_request_flag ()
4533 return &thread_interruption_requested;
4537 mono_thread_init_apartment_state (void)
4540 MonoInternalThread* thread = mono_thread_internal_current ();
4542 /* Positive return value indicates success, either
4543 * S_OK if this is first CoInitialize call, or
4544 * S_FALSE if CoInitialize already called, but with same
4545 * threading model. A negative value indicates failure,
4546 * probably due to trying to change the threading model.
4548 if (CoInitializeEx(NULL, (thread->apartment_state == ThreadApartmentState_STA)
4549 ? COINIT_APARTMENTTHREADED
4550 : COINIT_MULTITHREADED) < 0) {
4551 thread->apartment_state = ThreadApartmentState_Unknown;
4557 mono_thread_cleanup_apartment_state (void)
4560 MonoInternalThread* thread = mono_thread_internal_current ();
4562 if (thread && thread->apartment_state != ThreadApartmentState_Unknown) {
4569 mono_thread_set_state (MonoInternalThread *thread, MonoThreadState state)
4571 LOCK_THREAD (thread);
4572 thread->state |= state;
4573 UNLOCK_THREAD (thread);
4577 * mono_thread_test_and_set_state:
4579 * Test if current state of @thread include @test. If it does not, OR @set into the state.
4581 * Returns TRUE is @set was OR'd in.
4584 mono_thread_test_and_set_state (MonoInternalThread *thread, MonoThreadState test, MonoThreadState set)
4586 LOCK_THREAD (thread);
4588 if ((thread->state & test) != 0) {
4589 UNLOCK_THREAD (thread);
4593 thread->state |= set;
4594 UNLOCK_THREAD (thread);
4600 mono_thread_clr_state (MonoInternalThread *thread, MonoThreadState state)
4602 LOCK_THREAD (thread);
4603 thread->state &= ~state;
4604 UNLOCK_THREAD (thread);
4608 mono_thread_test_state (MonoInternalThread *thread, MonoThreadState test)
4610 gboolean ret = FALSE;
4612 LOCK_THREAD (thread);
4614 if ((thread->state & test) != 0) {
4618 UNLOCK_THREAD (thread);
4623 static gboolean has_tls_get = FALSE;
4626 mono_runtime_set_has_tls_get (gboolean val)
4632 mono_runtime_has_tls_get (void)
4638 self_interrupt_thread (void *_unused)
4641 MonoThreadInfo *info;
4643 exc = mono_thread_execute_interruption ();
4645 if (mono_threads_is_coop_enabled ()) {
4646 /* We can return from an async call in coop, as
4647 * it's simply called when exiting the safepoint */
4651 g_error ("%s: we can't resume from an async call", __func__);
4654 info = mono_thread_info_current ();
4656 /* We must use _with_context since we didn't trampoline into the runtime */
4657 mono_raise_exception_with_context (exc, &info->thread_saved_state [ASYNC_SUSPEND_STATE_INDEX].ctx); /* FIXME using thread_saved_state [ASYNC_SUSPEND_STATE_INDEX] can race with another suspend coming in. */
4661 mono_jit_info_match (MonoJitInfo *ji, gpointer ip)
4665 return ji->code_start <= ip && (char*)ip < (char*)ji->code_start + ji->code_size;
4669 last_managed (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
4671 MonoJitInfo **dest = (MonoJitInfo **)data;
4677 mono_thread_info_get_last_managed (MonoThreadInfo *info)
4679 MonoJitInfo *ji = NULL;
4684 * The suspended thread might be holding runtime locks. Make sure we don't try taking
4685 * any runtime locks while unwinding. In coop case we shouldn't safepoint in regions
4686 * where we hold runtime locks.
4688 if (!mono_threads_is_coop_enabled ())
4689 mono_thread_info_set_is_async_context (TRUE);
4690 mono_get_eh_callbacks ()->mono_walk_stack_with_state (last_managed, mono_thread_info_get_suspend_state (info), MONO_UNWIND_SIGNAL_SAFE, &ji);
4691 if (!mono_threads_is_coop_enabled ())
4692 mono_thread_info_set_is_async_context (FALSE);
4697 MonoInternalThread *thread;
4698 gboolean install_async_abort;
4699 MonoThreadInfoInterruptToken *interrupt_token;
4702 static SuspendThreadResult
4703 async_abort_critical (MonoThreadInfo *info, gpointer ud)
4705 AbortThreadData *data = (AbortThreadData *)ud;
4706 MonoInternalThread *thread = data->thread;
4707 MonoJitInfo *ji = NULL;
4708 gboolean protected_wrapper;
4709 gboolean running_managed;
4711 if (mono_get_eh_callbacks ()->mono_install_handler_block_guard (mono_thread_info_get_suspend_state (info)))
4712 return MonoResumeThread;
4715 The target thread is running at least one protected block, which must not be interrupted, so we give up.
4716 The protected block code will give them a chance when appropriate.
4718 if (thread->abort_protected_block_count)
4719 return MonoResumeThread;
4721 /*someone is already interrupting it*/
4722 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4723 return MonoResumeThread;
4725 InterlockedIncrement (&thread_interruption_requested);
4727 ji = mono_thread_info_get_last_managed (info);
4728 protected_wrapper = ji && !ji->is_trampoline && !ji->async && mono_threads_is_critical_method (mono_jit_info_get_method (ji));
4729 running_managed = mono_jit_info_match (ji, MONO_CONTEXT_GET_IP (&mono_thread_info_get_suspend_state (info)->ctx));
4731 if (!protected_wrapper && running_managed) {
4732 /*We are in managed code*/
4733 /*Set the thread to call */
4734 if (data->install_async_abort)
4735 mono_thread_info_setup_async_call (info, self_interrupt_thread, NULL);
4736 return MonoResumeThread;
4739 * This will cause waits to be broken.
4740 * It will also prevent the thread from entering a wait, so if the thread returns
4741 * from the wait before it receives the abort signal, it will just spin in the wait
4742 * functions in the io-layer until the signal handler calls QueueUserAPC which will
4745 data->interrupt_token = mono_thread_info_prepare_interrupt (info);
4747 return MonoResumeThread;
4752 async_abort_internal (MonoInternalThread *thread, gboolean install_async_abort)
4754 AbortThreadData data;
4756 g_assert (thread != mono_thread_internal_current ());
4758 data.thread = thread;
4759 data.install_async_abort = install_async_abort;
4760 data.interrupt_token = NULL;
4762 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), TRUE, async_abort_critical, &data);
4763 if (data.interrupt_token)
4764 mono_thread_info_finish_interrupt (data.interrupt_token);
4765 /*FIXME we need to wait for interruption to complete -- figure out how much into interruption we should wait for here*/
4769 self_abort_internal (MonoError *error)
4773 mono_error_init (error);
4775 /* FIXME this is insanely broken, it doesn't cause interruption to happen synchronously
4776 * since passing FALSE to mono_thread_request_interruption makes sure it returns NULL */
4779 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.
4781 exc = mono_thread_request_interruption (TRUE);
4783 mono_error_set_exception_instance (error, exc);
4785 mono_thread_info_self_interrupt ();
4789 MonoInternalThread *thread;
4791 MonoThreadInfoInterruptToken *interrupt_token;
4792 } SuspendThreadData;
4794 static SuspendThreadResult
4795 async_suspend_critical (MonoThreadInfo *info, gpointer ud)
4797 SuspendThreadData *data = (SuspendThreadData *)ud;
4798 MonoInternalThread *thread = data->thread;
4799 MonoJitInfo *ji = NULL;
4800 gboolean protected_wrapper;
4801 gboolean running_managed;
4803 ji = mono_thread_info_get_last_managed (info);
4804 protected_wrapper = ji && !ji->is_trampoline && !ji->async && mono_threads_is_critical_method (mono_jit_info_get_method (ji));
4805 running_managed = mono_jit_info_match (ji, MONO_CONTEXT_GET_IP (&mono_thread_info_get_suspend_state (info)->ctx));
4807 if (running_managed && !protected_wrapper) {
4808 if (mono_threads_is_coop_enabled ()) {
4809 mono_thread_info_setup_async_call (info, self_interrupt_thread, NULL);
4810 return MonoResumeThread;
4812 thread->state &= ~ThreadState_SuspendRequested;
4813 thread->state |= ThreadState_Suspended;
4814 return KeepSuspended;
4817 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 0)
4818 InterlockedIncrement (&thread_interruption_requested);
4819 if (data->interrupt)
4820 data->interrupt_token = mono_thread_info_prepare_interrupt ((MonoThreadInfo *)thread->thread_info);
4822 return MonoResumeThread;
4826 /* LOCKING: called with @thread synch_cs held, and releases it */
4828 async_suspend_internal (MonoInternalThread *thread, gboolean interrupt)
4830 SuspendThreadData data;
4832 g_assert (thread != mono_thread_internal_current ());
4834 // MOSTLY_ASYNC_SAFE_PRINTF ("ASYNC SUSPEND thread %p\n", thread_get_tid (thread));
4836 data.thread = thread;
4837 data.interrupt = interrupt;
4838 data.interrupt_token = NULL;
4840 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), interrupt, async_suspend_critical, &data);
4841 if (data.interrupt_token)
4842 mono_thread_info_finish_interrupt (data.interrupt_token);
4844 UNLOCK_THREAD (thread);
4847 /* LOCKING: called with @thread synch_cs held, and releases it */
4849 self_suspend_internal (void)
4851 MonoInternalThread *thread;
4853 thread = mono_thread_internal_current ();
4855 // MOSTLY_ASYNC_SAFE_PRINTF ("SELF SUSPEND thread %p\n", thread_get_tid (thread));
4857 if (!mono_threads_is_coop_enabled ())
4858 mono_thread_info_begin_self_suspend ();
4860 thread->state &= ~ThreadState_SuspendRequested;
4861 thread->state |= ThreadState_Suspended;
4863 UNLOCK_THREAD (thread);
4865 if (!mono_threads_is_coop_enabled ())
4866 mono_thread_info_end_self_suspend ();
4869 MonoOSEventWaitRet res;
4871 event = thread->suspended;
4874 res = mono_os_event_wait_one (event, MONO_INFINITE_WAIT);
4875 g_assert (res == MONO_OS_EVENT_WAIT_RET_SUCCESS_0 || res == MONO_OS_EVENT_WAIT_RET_ALERTED);
4881 * mono_thread_is_foreign:
4882 * @thread: the thread to query
4884 * This function allows one to determine if a thread was created by the mono runtime and has
4885 * a well defined lifecycle or it's a foreigh one, created by the native environment.
4887 * Returns: TRUE if @thread was not created by the runtime.
4890 mono_thread_is_foreign (MonoThread *thread)
4892 MonoThreadInfo *info = (MonoThreadInfo *)thread->internal_thread->thread_info;
4893 return info->runtime_thread == FALSE;
4897 * mono_add_joinable_thread:
4899 * Add TID to the list of joinable threads.
4900 * LOCKING: Acquires the threads lock.
4903 mono_threads_add_joinable_thread (gpointer tid)
4907 * We cannot detach from threads because it causes problems like
4908 * 2fd16f60/r114307. So we collect them and join them when
4909 * we have time (in he finalizer thread).
4911 joinable_threads_lock ();
4912 if (!joinable_threads)
4913 joinable_threads = g_hash_table_new (NULL, NULL);
4914 g_hash_table_insert (joinable_threads, tid, tid);
4915 joinable_thread_count ++;
4916 joinable_threads_unlock ();
4918 mono_gc_finalize_notify ();
4923 * mono_threads_join_threads:
4925 * Join all joinable threads. This is called from the finalizer thread.
4926 * LOCKING: Acquires the threads lock.
4929 mono_threads_join_threads (void)
4932 GHashTableIter iter;
4939 if (!joinable_thread_count)
4943 joinable_threads_lock ();
4945 if (g_hash_table_size (joinable_threads)) {
4946 g_hash_table_iter_init (&iter, joinable_threads);
4947 g_hash_table_iter_next (&iter, &key, (void**)&tid);
4948 thread = (pthread_t)tid;
4949 g_hash_table_remove (joinable_threads, key);
4950 joinable_thread_count --;
4953 joinable_threads_unlock ();
4955 if (thread != pthread_self ()) {
4957 /* This shouldn't block */
4958 mono_native_thread_join (thread);
4971 * Wait for thread TID to exit.
4972 * LOCKING: Acquires the threads lock.
4975 mono_thread_join (gpointer tid)
4979 gboolean found = FALSE;
4981 joinable_threads_lock ();
4982 if (!joinable_threads)
4983 joinable_threads = g_hash_table_new (NULL, NULL);
4984 if (g_hash_table_lookup (joinable_threads, tid)) {
4985 g_hash_table_remove (joinable_threads, tid);
4986 joinable_thread_count --;
4989 joinable_threads_unlock ();
4992 thread = (pthread_t)tid;
4994 mono_native_thread_join (thread);
5000 mono_thread_internal_check_for_interruption_critical (MonoInternalThread *thread)
5002 if ((thread->state & (ThreadState_StopRequested | ThreadState_SuspendRequested)) != 0)
5003 mono_thread_interruption_checkpoint ();
5007 mono_thread_internal_unhandled_exception (MonoObject* exc)
5009 MonoClass *klass = exc->vtable->klass;
5010 if (is_threadabort_exception (klass)) {
5011 mono_thread_internal_reset_abort (mono_thread_internal_current ());
5012 } else if (!is_appdomainunloaded_exception (klass)
5013 && mono_runtime_unhandled_exception_policy_get () == MONO_UNHANDLED_POLICY_CURRENT) {
5014 mono_unhandled_exception (exc);
5015 if (mono_environment_exitcode_get () == 1) {
5016 mono_environment_exitcode_set (255);
5017 mono_invoke_unhandled_exception_hook (exc);
5018 g_assert_not_reached ();
5024 ves_icall_System_Threading_Thread_GetStackTraces (MonoArray **out_threads, MonoArray **out_stack_traces)
5027 mono_threads_get_thread_dump (out_threads, out_stack_traces, &error);
5028 mono_error_set_pending_exception (&error);
5032 * mono_threads_attach_coop: called by native->managed wrappers
5036 * - @return: the original domain which needs to be restored, or NULL.
5039 * - @dummy: contains the original domain
5040 * - @return: a cookie containing current MonoThreadInfo*.
5043 mono_threads_attach_coop (MonoDomain *domain, gpointer *dummy)
5046 gboolean fresh_thread = FALSE;
5049 /* Happens when called from AOTed code which is only used in the root domain. */
5050 domain = mono_get_root_domain ();
5055 /* On coop, when we detached, we moved the thread from RUNNING->BLOCKING.
5056 * If we try to reattach we do a BLOCKING->RUNNING transition. If the thread
5057 * is fresh, mono_thread_attach() will do a STARTING->RUNNING transition so
5058 * we're only responsible for making the cookie. */
5059 if (mono_threads_is_coop_enabled ()) {
5060 MonoThreadInfo *info = mono_thread_info_current_unchecked ();
5061 fresh_thread = !info || !mono_thread_info_is_live (info);
5064 if (!mono_thread_internal_current ()) {
5065 mono_thread_attach_full (domain, FALSE);
5068 mono_thread_set_state (mono_thread_internal_current (), ThreadState_Background);
5071 orig = mono_domain_get ();
5073 mono_domain_set (domain, TRUE);
5075 if (!mono_threads_is_coop_enabled ())
5076 return orig != domain ? orig : NULL;
5080 /* mono_thread_attach put the thread in RUNNING mode from STARTING, but we need to
5081 * return the right cookie. */
5082 return mono_threads_enter_gc_unsafe_region_cookie ();
5085 /* thread state (BLOCKING|RUNNING) -> RUNNING */
5086 return mono_threads_enter_gc_unsafe_region (dummy);
5091 * mono_threads_detach_coop: called by native->managed wrappers
5094 * - @cookie: the original domain which needs to be restored, or NULL.
5098 * - @cookie: contains current MonoThreadInfo* if it was in BLOCKING mode, NULL otherwise
5099 * - @dummy: contains the original domain
5102 mono_threads_detach_coop (gpointer cookie, gpointer *dummy)
5104 MonoDomain *domain, *orig;
5106 if (!mono_threads_is_coop_enabled ()) {
5107 orig = (MonoDomain*) cookie;
5109 mono_domain_set (orig, TRUE);
5111 orig = (MonoDomain*) *dummy;
5113 domain = mono_domain_get ();
5116 /* it won't do anything if cookie is NULL
5117 * thread state RUNNING -> (RUNNING|BLOCKING) */
5118 mono_threads_exit_gc_unsafe_region (cookie, dummy);
5120 if (orig != domain) {
5122 mono_domain_unset ();
5124 mono_domain_set (orig, TRUE);
5130 mono_threads_begin_abort_protected_block (void)
5132 MonoInternalThread *thread;
5134 thread = mono_thread_internal_current ();
5135 ++thread->abort_protected_block_count;
5136 mono_memory_barrier ();
5140 mono_threads_end_abort_protected_block (void)
5142 MonoInternalThread *thread;
5144 thread = mono_thread_internal_current ();
5146 mono_memory_barrier ();
5147 --thread->abort_protected_block_count;
5151 mono_thread_try_resume_interruption (void)
5153 MonoInternalThread *thread;
5155 thread = mono_thread_internal_current ();
5156 if (thread->abort_protected_block_count || mono_get_eh_callbacks ()->mono_current_thread_has_handle_block_guard ())
5159 return mono_thread_resume_interruption ();
5163 /* Returns TRUE if the current thread is ready to be interrupted. */
5165 mono_threads_is_ready_to_be_interrupted (void)
5167 MonoInternalThread *thread;
5169 thread = mono_thread_internal_current ();
5170 LOCK_THREAD (thread);
5171 if (thread->state & (MonoThreadState)(ThreadState_StopRequested | ThreadState_SuspendRequested | ThreadState_AbortRequested)) {
5172 UNLOCK_THREAD (thread);
5176 if (thread->abort_protected_block_count || mono_get_eh_callbacks ()->mono_current_thread_has_handle_block_guard ()) {
5177 UNLOCK_THREAD (thread);
5181 UNLOCK_THREAD (thread);
5187 mono_thread_internal_describe (MonoInternalThread *internal, GString *text)
5189 g_string_append_printf (text, ", thread handle : %p", internal->handle);
5191 if (internal->thread_info) {
5192 g_string_append (text, ", state : ");
5193 mono_thread_info_describe_interrupt_token ((MonoThreadInfo*) internal->thread_info, text);
5196 if (internal->owned_mutexes) {
5199 g_string_append (text, ", owns : [");
5200 for (i = 0; i < internal->owned_mutexes->len; i++)
5201 g_string_append_printf (text, i == 0 ? "%p" : ", %p", g_ptr_array_index (internal->owned_mutexes, i));
5202 g_string_append (text, "]");
5207 mono_thread_internal_is_current (MonoInternalThread *internal)
5209 g_assert (internal);
5210 return mono_native_thread_id_equals (mono_native_thread_id_get (), MONO_UINT_TO_NATIVE_THREAD_ID (internal->tid));