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 * (C) 2001 Ximian, Inc.
14 #define _WIN32_WINNT 0x0500
21 #include <mono/metadata/object.h>
22 #include <mono/metadata/domain-internals.h>
23 #include <mono/metadata/profiler-private.h>
24 #include <mono/metadata/threads.h>
25 #include <mono/metadata/threadpool.h>
26 #include <mono/metadata/threads-types.h>
27 #include <mono/metadata/exception.h>
28 #include <mono/metadata/environment.h>
29 #include <mono/metadata/monitor.h>
30 #include <mono/metadata/gc-internal.h>
31 #include <mono/metadata/marshal.h>
32 #include <mono/io-layer/io-layer.h>
33 #include <mono/metadata/object-internals.h>
34 #include <mono/utils/mono-compiler.h>
36 #include <mono/os/gc_wrapper.h>
38 /*#define THREAD_DEBUG(a) do { a; } while (0)*/
39 #define THREAD_DEBUG(a)
40 /*#define THREAD_WAIT_DEBUG(a) do { a; } while (0)*/
41 #define THREAD_WAIT_DEBUG(a)
42 /*#define LIBGC_DEBUG(a) do { a; } while (0)*/
43 #define LIBGC_DEBUG(a)
47 guint32 (*func)(void *);
69 /* Number of cached culture objects in the MonoThread->culture_info array */
70 #define NUM_CACHED_CULTURES 4
73 * The "os_handle" field of the WaitHandle class.
75 static MonoClassField *wait_handle_os_handle_field = NULL;
77 /* Controls access to the 'threads' hash table */
78 #define mono_threads_lock() EnterCriticalSection (&threads_mutex)
79 #define mono_threads_unlock() LeaveCriticalSection (&threads_mutex)
80 static CRITICAL_SECTION threads_mutex;
82 /* Controls access to context static data */
83 #define mono_contexts_lock() EnterCriticalSection (&contexts_mutex)
84 #define mono_contexts_unlock() LeaveCriticalSection (&contexts_mutex)
85 static CRITICAL_SECTION contexts_mutex;
87 /* Holds current status of static data heap */
88 static StaticDataInfo thread_static_info;
89 static StaticDataInfo context_static_info;
91 /* The hash of existing threads (key is thread ID) that need joining
94 static MonoGHashTable *threads=NULL;
96 /* The TLS key that holds the MonoObject assigned to each thread */
97 static guint32 current_object_key = -1;
100 /* we need to use both the Tls* functions and __thread because
101 * the gc needs to see all the threads
103 static __thread MonoThread * tls_current_object MONO_TLS_FAST;
104 #define SET_CURRENT_OBJECT(x) do { \
105 tls_current_object = x; \
106 TlsSetValue (current_object_key, x); \
108 #define GET_CURRENT_OBJECT() tls_current_object
110 #define SET_CURRENT_OBJECT(x) TlsSetValue (current_object_key, x);
111 #define GET_CURRENT_OBJECT() (MonoThread*) TlsGetValue (current_object_key);
114 /* function called at thread start */
115 static MonoThreadStartCB mono_thread_start_cb = NULL;
117 /* function called at thread attach */
118 static MonoThreadAttachCB mono_thread_attach_cb = NULL;
120 /* function called at thread cleanup */
121 static MonoThreadCleanupFunc mono_thread_cleanup = NULL;
123 /* function called when a new thread has been created */
124 static MonoThreadCallbacks *mono_thread_callbacks = NULL;
126 /* The default stack size for each thread */
127 static guint32 default_stacksize = 0;
128 #define default_stacksize_for_thread(thread) ((thread)->stack_size? (thread)->stack_size: default_stacksize)
130 static void thread_adjust_static_data (MonoThread *thread);
131 static void mono_init_static_data_info (StaticDataInfo *static_data);
132 static guint32 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align);
133 static gboolean mono_thread_resume (MonoThread* thread);
134 static void mono_thread_start (MonoThread *thread);
136 /* Spin lock for InterlockedXXX 64 bit functions */
137 #define mono_interlocked_lock() EnterCriticalSection (&interlocked_mutex)
138 #define mono_interlocked_unlock() LeaveCriticalSection (&interlocked_mutex)
139 static CRITICAL_SECTION interlocked_mutex;
141 /* global count of thread interruptions requested */
142 static gint32 thread_interruption_requested = 0;
144 /* Event signaled when a thread changes its background mode */
145 static HANDLE background_change_event;
148 mono_thread_get_tls_key (void)
150 return current_object_key;
154 mono_thread_get_tls_offset (void)
157 MONO_THREAD_VAR_OFFSET (tls_current_object,offset);
161 /* handle_store() and handle_remove() manage the array of threads that
162 * still need to be waited for when the main thread exits.
164 static void handle_store(MonoThread *thread)
166 mono_threads_lock ();
168 THREAD_DEBUG (g_message ("%s: thread %p ID %"G_GSIZE_FORMAT, __func__, thread, (gsize)thread->tid));
171 MONO_GC_REGISTER_ROOT (threads);
172 threads=mono_g_hash_table_new(NULL, NULL);
175 /* We don't need to duplicate thread->handle, because it is
176 * only closed when the thread object is finalized by the GC.
178 mono_g_hash_table_insert(threads, (gpointer)(gsize)(thread->tid),
181 mono_threads_unlock ();
184 static void handle_remove(gsize tid)
186 THREAD_DEBUG (g_message ("%s: thread ID %"G_GSIZE_FORMAT, __func__, tid));
188 mono_threads_lock ();
192 mono_g_hash_table_remove (threads, (gpointer)tid);
194 mono_threads_unlock ();
196 /* Don't close the handle here, wait for the object finalizer
197 * to do it. Otherwise, the following race condition applies:
199 * 1) Thread exits (and handle_remove() closes the handle)
201 * 2) Some other handle is reassigned the same slot
203 * 3) Another thread tries to join the first thread, and
204 * blocks waiting for the reassigned handle to be signalled
205 * (which might never happen). This is possible, because the
206 * thread calling Join() still has a reference to the first
211 static void thread_cleanup (MonoThread *thread)
213 g_assert (thread != NULL);
215 mono_release_type_locks (thread);
217 if (!mono_monitor_enter (thread->synch_lock))
220 thread->state |= ThreadState_Stopped;
221 mono_monitor_exit (thread->synch_lock);
223 mono_profiler_thread_end (thread->tid);
224 handle_remove (thread->tid);
226 mono_thread_pop_appdomain_ref ();
228 if (thread->serialized_culture_info)
229 g_free (thread->serialized_culture_info);
231 mono_gc_free_fixed (thread->culture_info);
232 mono_gc_free_fixed (thread->ui_culture_info);
234 if (mono_thread_cleanup)
235 mono_thread_cleanup (thread);
238 static guint32 WINAPI start_wrapper(void *data)
240 struct StartInfo *start_info=(struct StartInfo *)data;
241 guint32 (*start_func)(void *);
244 MonoThread *thread=start_info->obj;
245 MonoObject *start_delegate = start_info->delegate;
247 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper", __func__, GetCurrentThreadId ()));
249 /* We can be sure start_info->obj->tid and
250 * start_info->obj->handle have been set, because the thread
251 * was created suspended, and these values were set before the
257 SET_CURRENT_OBJECT (thread);
259 if (!mono_domain_set (start_info->domain, FALSE)) {
260 /* No point in raising an appdomain_unloaded exception here */
261 /* FIXME: Cleanup here */
265 start_func = start_info->func;
266 start_arg = start_info->start_arg;
268 /* This MUST be called before any managed code can be
269 * executed, as it calls the callback function that (for the
270 * jit) sets the lmf marker.
272 mono_thread_new_init (tid, &tid, start_func);
273 thread->stack_ptr = &tid;
275 LIBGC_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT",%d) Setting thread stack to %p", __func__, GetCurrentThreadId (), getpid (), thread->stack_ptr));
277 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Setting current_object_key to %p", __func__, GetCurrentThreadId (), thread));
279 mono_profiler_thread_start (tid);
281 if(thread->start_notify!=NULL) {
282 /* Let the thread that called Start() know we're
285 ReleaseSemaphore (thread->start_notify, 1, NULL);
290 /* Every thread references the appdomain which created it */
291 mono_thread_push_appdomain_ref (mono_domain_get ());
293 thread_adjust_static_data (thread);
295 g_message ("%s: start_wrapper for %"G_GSIZE_FORMAT, __func__,
299 /* start_func is set only for unamanged start functions */
301 start_func (start_arg);
304 g_assert (start_delegate != NULL);
305 args [0] = start_arg;
306 /* we may want to handle the exception here. See comment below on unhandled exceptions */
307 mono_runtime_delegate_invoke (start_delegate, args, NULL);
310 /* If the thread calls ExitThread at all, this remaining code
311 * will not be executed, but the main thread will eventually
312 * call thread_cleanup() on this thread's behalf.
315 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper terminating", __func__, GetCurrentThreadId ()));
317 /* Remove the reference to the thread object in the TLS data,
318 * so the thread object can be finalized. This won't be
319 * reached if the thread threw an uncaught exception, so those
320 * thread handles will stay referenced :-( (This is due to
321 * missing support for scanning thread-specific data in the
322 * Boehm GC - the io-layer keeps a GC-visible hash of pointers
325 SET_CURRENT_OBJECT (NULL);
327 thread_cleanup (thread);
332 void mono_thread_new_init (gsize tid, gpointer stack_start, gpointer func)
334 if (mono_thread_start_cb) {
335 mono_thread_start_cb (tid, stack_start, func);
338 if (mono_thread_callbacks)
339 (* mono_thread_callbacks->thread_created) (tid, stack_start, func);
342 void mono_threads_set_default_stacksize (guint32 stacksize)
344 default_stacksize = stacksize;
347 guint32 mono_threads_get_default_stacksize (void)
349 return default_stacksize;
352 void mono_thread_create (MonoDomain *domain, gpointer func, gpointer arg)
355 HANDLE thread_handle;
356 struct StartInfo *start_info;
359 thread=(MonoThread *)mono_object_new (domain,
360 mono_defaults.thread_class);
362 start_info=g_new0 (struct StartInfo, 1);
363 start_info->func = func;
364 start_info->obj = thread;
365 start_info->domain = domain;
366 start_info->start_arg = arg;
368 /* Create suspended, so we can do some housekeeping before the thread
371 thread_handle = CreateThread(NULL, default_stacksize_for_thread (thread), (LPTHREAD_START_ROUTINE)start_wrapper, start_info,
372 CREATE_SUSPENDED, &tid);
373 THREAD_DEBUG (g_message ("%s: Started thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread_handle));
374 if (thread_handle == NULL) {
375 /* The thread couldn't be created, so throw an exception */
376 mono_raise_exception (mono_get_exception_execution_engine ("Couldn't create thread"));
380 thread->handle=thread_handle;
383 thread->synch_lock=mono_object_new (domain, mono_defaults.object_class);
385 handle_store(thread);
387 ResumeThread (thread_handle);
391 mono_thread_attach (MonoDomain *domain)
394 HANDLE thread_handle;
397 if ((thread = mono_thread_current ())) {
398 if (domain != mono_domain_get ())
399 mono_domain_set (domain, TRUE);
400 /* Already attached */
404 if (!mono_gc_register_thread (&domain)) {
405 g_error ("Thread %p 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.", GetCurrentThread ());
408 thread = (MonoThread *)mono_object_new (domain,
409 mono_defaults.thread_class);
411 thread_handle = GetCurrentThread ();
412 g_assert (thread_handle);
414 tid=GetCurrentThreadId ();
416 #ifdef PLATFORM_WIN32
418 * The handle returned by GetCurrentThread () is a pseudo handle, so it can't be used to
419 * refer to the thread from other threads for things like aborting.
421 DuplicateHandle (GetCurrentProcess (), thread_handle, GetCurrentProcess (), &thread_handle,
422 THREAD_ALL_ACCESS, TRUE, 0);
425 thread->handle=thread_handle;
427 thread->synch_lock=mono_object_new (domain, mono_defaults.object_class);
429 THREAD_DEBUG (g_message ("%s: Attached thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread_handle));
431 handle_store(thread);
433 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Setting current_object_key to %p", __func__, GetCurrentThreadId (), thread));
435 SET_CURRENT_OBJECT (thread);
436 mono_domain_set (domain, TRUE);
438 thread_adjust_static_data (thread);
440 if (mono_thread_attach_cb) {
441 mono_thread_attach_cb (tid, &tid);
448 mono_thread_detach (MonoThread *thread)
450 g_return_if_fail (thread != NULL);
452 THREAD_DEBUG (g_message ("%s: mono_thread_detach for %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
453 SET_CURRENT_OBJECT (NULL);
455 thread_cleanup (thread);
457 /* Need to CloseHandle this thread, because we took a reference in
458 * mono_thread_attach ()
460 CloseHandle(thread->handle);
466 MonoThread *thread = mono_thread_current ();
468 SET_CURRENT_OBJECT (NULL);
469 thread_cleanup (thread);
471 /* we could add a callback here for embedders to use. */
472 if (thread == mono_thread_get_main ())
473 exit (mono_environment_exitcode_get ());
477 HANDLE ves_icall_System_Threading_Thread_Thread_internal(MonoThread *this,
480 guint32 (*start_func)(void *);
481 struct StartInfo *start_info;
487 THREAD_DEBUG (g_message("%s: Trying to start a new thread: this (%p) start (%p)", __func__, this, start));
489 mono_monitor_enter (this->synch_lock);
491 if ((this->state & ThreadState_Unstarted) == 0) {
492 mono_monitor_exit (this->synch_lock);
493 mono_raise_exception (mono_get_exception_thread_state ("Thread has already been started."));
497 if ((this->state & ThreadState_Aborted) != 0) {
498 mono_monitor_exit (this->synch_lock);
503 /* This is freed in start_wrapper */
504 start_info = g_new0 (struct StartInfo, 1);
505 start_info->func = start_func;
506 start_info->start_arg = this->start_obj;
507 start_info->delegate = start;
508 start_info->obj = this;
509 start_info->domain = mono_domain_get ();
511 this->start_notify=CreateSemaphore (NULL, 0, 0x7fffffff, NULL);
512 if(this->start_notify==NULL) {
513 mono_monitor_exit (this->synch_lock);
514 g_warning ("%s: CreateSemaphore error 0x%x", __func__, GetLastError ());
518 thread=CreateThread(NULL, default_stacksize_for_thread (this), (LPTHREAD_START_ROUTINE)start_wrapper, start_info,
519 CREATE_SUSPENDED, &tid);
521 mono_monitor_exit (this->synch_lock);
522 g_warning("%s: CreateThread error 0x%x", __func__, GetLastError());
529 /* Don't call handle_store() here, delay it to Start.
530 * We can't join a thread (trying to will just block
531 * forever) until it actually starts running, so don't
532 * store the handle till then.
535 mono_thread_start (this);
537 this->state &= ~ThreadState_Unstarted;
539 THREAD_DEBUG (g_message ("%s: Started thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread));
541 mono_monitor_exit (this->synch_lock);
546 void ves_icall_System_Threading_Thread_Thread_free_internal (MonoThread *this,
551 THREAD_DEBUG (g_message ("%s: Closing thread %p, handle %p", __func__, this, thread));
553 CloseHandle (thread);
556 static void mono_thread_start (MonoThread *thread)
560 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Launching thread %p (%"G_GSIZE_FORMAT")", __func__, GetCurrentThreadId (), thread, (gsize)thread->tid));
562 /* Only store the handle when the thread is about to be
563 * launched, to avoid the main thread deadlocking while trying
564 * to clean up a thread that will never be signalled.
566 handle_store (thread);
568 if (mono_thread_callbacks)
569 (* mono_thread_callbacks->start_resume) (thread->tid);
571 ResumeThread (thread->handle);
573 if (mono_thread_callbacks)
574 (* mono_thread_callbacks->end_resume) (thread->tid);
576 if(thread->start_notify!=NULL) {
577 /* Wait for the thread to set up its TLS data etc, so
578 * theres no potential race condition if someone tries
579 * to look up the data believing the thread has
583 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") waiting for thread %p (%"G_GSIZE_FORMAT") to start", __func__, GetCurrentThreadId (), thread, (gsize)thread->tid));
585 WaitForSingleObjectEx (thread->start_notify, INFINITE, FALSE);
586 CloseHandle (thread->start_notify);
587 thread->start_notify = NULL;
590 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Done launching thread %p (%"G_GSIZE_FORMAT")", __func__, GetCurrentThreadId (), thread, (gsize)thread->tid));
593 void ves_icall_System_Threading_Thread_Sleep_internal(gint32 ms)
595 MonoThread *thread = mono_thread_current ();
599 THREAD_DEBUG (g_message ("%s: Sleeping for %d ms", __func__, ms));
601 mono_monitor_enter (thread->synch_lock);
602 thread->state |= ThreadState_WaitSleepJoin;
603 mono_monitor_exit (thread->synch_lock);
607 mono_monitor_enter (thread->synch_lock);
608 thread->state &= ~ThreadState_WaitSleepJoin;
609 mono_monitor_exit (thread->synch_lock);
613 ves_icall_System_Threading_Thread_GetDomainID (void)
617 return mono_domain_get()->domain_id;
621 ves_icall_System_Threading_Thread_GetName_internal (MonoThread *this_obj)
624 mono_monitor_enter (this_obj->synch_lock);
629 str = mono_string_new_utf16 (mono_domain_get (), this_obj->name, this_obj->name_len);
631 mono_monitor_exit (this_obj->synch_lock);
636 ves_icall_System_Threading_Thread_SetName_internal (MonoThread *this_obj, MonoString *name)
638 mono_monitor_enter (this_obj->synch_lock);
640 if (this_obj->name) {
641 mono_monitor_exit (this_obj->synch_lock);
642 mono_raise_exception (mono_get_exception_invalid_operation ("Thread.Name can only be set once."));
646 this_obj->name = g_new (gunichar2, mono_string_length (name));
647 memcpy (this_obj->name, mono_string_chars (name), mono_string_length (name) * 2);
648 this_obj->name_len = mono_string_length (name);
651 this_obj->name = NULL;
653 mono_monitor_exit (this_obj->synch_lock);
657 ves_icall_System_Threading_Thread_GetCachedCurrentCulture (MonoThread *this)
663 /* No need to lock here */
664 if (this->culture_info) {
665 domain = mono_domain_get ();
666 for (i = 0; i < NUM_CACHED_CULTURES; ++i) {
667 res = this->culture_info [i];
668 if (res && res->vtable->domain == domain)
677 ves_icall_System_Threading_Thread_GetSerializedCurrentCulture (MonoThread *this)
681 mono_monitor_enter (this->synch_lock);
682 if (this->serialized_culture_info) {
683 res = mono_array_new (mono_domain_get (), mono_defaults.byte_class, this->serialized_culture_info_len);
684 memcpy (mono_array_addr (res, guint8, 0), this->serialized_culture_info, this->serialized_culture_info_len);
688 mono_monitor_exit (this->synch_lock);
694 ves_icall_System_Threading_Thread_SetCachedCurrentCulture (MonoThread *this, MonoObject *culture)
697 MonoDomain *domain = mono_domain_get ();
699 mono_monitor_enter (this->synch_lock);
700 if (!this->culture_info) {
701 this->culture_info = mono_gc_alloc_fixed (sizeof (MonoObject*) * NUM_CACHED_CULTURES, NULL);
704 for (i = 0; i < NUM_CACHED_CULTURES; ++i) {
705 if (this->culture_info [i]) {
706 if (this->culture_info [i]->vtable->domain == domain)
714 if (i < NUM_CACHED_CULTURES)
715 this->culture_info [i] = culture;
716 mono_monitor_exit (this->synch_lock);
720 ves_icall_System_Threading_Thread_SetSerializedCurrentCulture (MonoThread *this, MonoArray *arr)
722 mono_monitor_enter (this->synch_lock);
723 if (this->serialized_culture_info)
724 g_free (this->serialized_culture_info);
725 this->serialized_culture_info = g_new0 (guint8, mono_array_length (arr));
726 this->serialized_culture_info_len = mono_array_length (arr);
727 memcpy (this->serialized_culture_info, mono_array_addr (arr, guint8, 0), mono_array_length (arr));
728 mono_monitor_exit (this->synch_lock);
733 ves_icall_System_Threading_Thread_GetCachedCurrentUICulture (MonoThread *this)
739 /* No need to lock here */
740 if (this->ui_culture_info) {
741 domain = mono_domain_get ();
742 for (i = 0; i < NUM_CACHED_CULTURES; ++i) {
743 res = this->ui_culture_info [i];
744 if (res && res->vtable->domain == domain)
753 ves_icall_System_Threading_Thread_GetSerializedCurrentUICulture (MonoThread *this)
757 mono_monitor_enter (this->synch_lock);
758 if (this->serialized_ui_culture_info) {
759 res = mono_array_new (mono_domain_get (), mono_defaults.byte_class, this->serialized_ui_culture_info_len);
760 memcpy (mono_array_addr (res, guint8, 0), this->serialized_ui_culture_info, this->serialized_ui_culture_info_len);
764 mono_monitor_exit (this->synch_lock);
770 ves_icall_System_Threading_Thread_SetCachedCurrentUICulture (MonoThread *this, MonoObject *culture)
773 MonoDomain *domain = mono_domain_get ();
775 mono_monitor_enter (this->synch_lock);
776 if (!this->ui_culture_info) {
777 this->ui_culture_info = mono_gc_alloc_fixed (sizeof (MonoObject*) * NUM_CACHED_CULTURES, NULL);
780 for (i = 0; i < NUM_CACHED_CULTURES; ++i) {
781 if (this->ui_culture_info [i]) {
782 if (this->ui_culture_info [i]->vtable->domain == domain)
790 if (i < NUM_CACHED_CULTURES)
791 this->ui_culture_info [i] = culture;
792 mono_monitor_exit (this->synch_lock);
796 ves_icall_System_Threading_Thread_SetSerializedCurrentUICulture (MonoThread *this, MonoArray *arr)
798 mono_monitor_enter (this->synch_lock);
799 if (this->serialized_ui_culture_info)
800 g_free (this->serialized_ui_culture_info);
801 this->serialized_ui_culture_info = g_new0 (guint8, mono_array_length (arr));
802 this->serialized_ui_culture_info_len = mono_array_length (arr);
803 memcpy (this->serialized_ui_culture_info, mono_array_addr (arr, guint8, 0), mono_array_length (arr));
804 mono_monitor_exit (this->synch_lock);
807 /* the jit may read the compiled code of this function */
809 mono_thread_current (void)
811 THREAD_DEBUG (g_message ("%s: returning %p", __func__, GET_CURRENT_OBJECT ()));
812 return GET_CURRENT_OBJECT ();
815 gboolean ves_icall_System_Threading_Thread_Join_internal(MonoThread *this,
816 int ms, HANDLE thread)
822 mono_monitor_enter (this->synch_lock);
824 if ((this->state & ThreadState_Unstarted) != 0) {
825 mono_monitor_exit (this->synch_lock);
826 mono_raise_exception (mono_get_exception_thread_state ("Thread has not been started."));
830 this->state |= ThreadState_WaitSleepJoin;
831 mono_monitor_exit (this->synch_lock);
836 THREAD_DEBUG (g_message ("%s: joining thread handle %p, %d ms", __func__, thread, ms));
838 ret=WaitForSingleObjectEx (thread, ms, TRUE);
840 mono_monitor_enter (this->synch_lock);
841 this->state &= ~ThreadState_WaitSleepJoin;
842 mono_monitor_exit (this->synch_lock);
844 if(ret==WAIT_OBJECT_0) {
845 THREAD_DEBUG (g_message ("%s: join successful", __func__));
850 THREAD_DEBUG (g_message ("%s: join failed", __func__));
855 /* FIXME: exitContext isnt documented */
856 gboolean ves_icall_System_Threading_WaitHandle_WaitAll_internal(MonoArray *mono_handles, gint32 ms, gboolean exitContext)
862 MonoObject *waitHandle;
864 MonoThread *thread = mono_thread_current ();
868 numhandles = mono_array_length(mono_handles);
869 handles = g_new0(HANDLE, numhandles);
871 if (wait_handle_os_handle_field == 0) {
872 /* Get the field os_handle which will contain the actual handle */
873 klass = mono_class_from_name(mono_defaults.corlib, "System.Threading", "WaitHandle");
874 wait_handle_os_handle_field = mono_class_get_field_from_name(klass, "os_handle");
877 for(i = 0; i < numhandles; i++) {
878 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
879 mono_field_get_value(waitHandle, wait_handle_os_handle_field, &handles[i]);
886 mono_monitor_enter (thread->synch_lock);
887 thread->state |= ThreadState_WaitSleepJoin;
888 mono_monitor_exit (thread->synch_lock);
890 ret=WaitForMultipleObjectsEx(numhandles, handles, TRUE, ms, TRUE);
892 mono_monitor_enter (thread->synch_lock);
893 thread->state &= ~ThreadState_WaitSleepJoin;
894 mono_monitor_exit (thread->synch_lock);
898 if(ret==WAIT_FAILED) {
899 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Wait failed", __func__, GetCurrentThreadId ()));
901 } else if(ret==WAIT_TIMEOUT || ret == WAIT_IO_COMPLETION) {
902 /* Do we want to try again if we get
903 * WAIT_IO_COMPLETION? The documentation for
904 * WaitHandle doesn't give any clues. (We'd have to
905 * fiddle with the timeout if we retry.)
907 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Wait timed out", __func__, GetCurrentThreadId ()));
914 /* FIXME: exitContext isnt documented */
915 gint32 ves_icall_System_Threading_WaitHandle_WaitAny_internal(MonoArray *mono_handles, gint32 ms, gboolean exitContext)
921 MonoObject *waitHandle;
923 MonoThread *thread = mono_thread_current ();
927 numhandles = mono_array_length(mono_handles);
928 handles = g_new0(HANDLE, numhandles);
930 if (wait_handle_os_handle_field == 0) {
931 /* Get the field os_handle which will contain the actual handle */
932 klass = mono_class_from_name(mono_defaults.corlib, "System.Threading", "WaitHandle");
933 wait_handle_os_handle_field = mono_class_get_field_from_name(klass, "os_handle");
936 for(i = 0; i < numhandles; i++) {
937 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
938 mono_field_get_value(waitHandle, wait_handle_os_handle_field, &handles[i]);
945 mono_monitor_enter (thread->synch_lock);
946 thread->state |= ThreadState_WaitSleepJoin;
947 mono_monitor_exit (thread->synch_lock);
949 ret=WaitForMultipleObjectsEx(numhandles, handles, FALSE, ms, TRUE);
951 mono_monitor_enter (thread->synch_lock);
952 thread->state &= ~ThreadState_WaitSleepJoin;
953 mono_monitor_exit (thread->synch_lock);
957 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") returning %d", __func__, GetCurrentThreadId (), ret));
960 * These need to be here. See MSDN dos on WaitForMultipleObjects.
962 if (ret >= WAIT_OBJECT_0 && ret <= WAIT_OBJECT_0 + numhandles - 1) {
963 return ret - WAIT_OBJECT_0;
965 else if (ret >= WAIT_ABANDONED_0 && ret <= WAIT_ABANDONED_0 + numhandles - 1) {
966 return ret - WAIT_ABANDONED_0;
973 /* FIXME: exitContext isnt documented */
974 gboolean ves_icall_System_Threading_WaitHandle_WaitOne_internal(MonoObject *this, HANDLE handle, gint32 ms, gboolean exitContext)
977 MonoThread *thread = mono_thread_current ();
981 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") waiting for %p, %d ms", __func__, GetCurrentThreadId (), handle, ms));
987 mono_monitor_enter (thread->synch_lock);
988 thread->state |= ThreadState_WaitSleepJoin;
989 mono_monitor_exit (thread->synch_lock);
991 ret=WaitForSingleObjectEx (handle, ms, TRUE);
993 mono_monitor_enter (thread->synch_lock);
994 thread->state &= ~ThreadState_WaitSleepJoin;
995 mono_monitor_exit (thread->synch_lock);
997 if(ret==WAIT_FAILED) {
998 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Wait failed", __func__, GetCurrentThreadId ()));
1000 } else if(ret==WAIT_TIMEOUT || ret == WAIT_IO_COMPLETION) {
1001 /* Do we want to try again if we get
1002 * WAIT_IO_COMPLETION? The documentation for
1003 * WaitHandle doesn't give any clues. (We'd have to
1004 * fiddle with the timeout if we retry.)
1006 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Wait timed out", __func__, GetCurrentThreadId ()));
1013 HANDLE ves_icall_System_Threading_Mutex_CreateMutex_internal (MonoBoolean owned, MonoString *name, MonoBoolean *created)
1017 MONO_ARCH_SAVE_REGS;
1022 mutex = CreateMutex (NULL, owned, NULL);
1024 mutex = CreateMutex (NULL, owned, mono_string_chars (name));
1026 if (GetLastError () == ERROR_ALREADY_EXISTS) {
1034 void ves_icall_System_Threading_Mutex_ReleaseMutex_internal (HANDLE handle ) {
1035 MONO_ARCH_SAVE_REGS;
1037 ReleaseMutex(handle);
1040 HANDLE ves_icall_System_Threading_Mutex_OpenMutex_internal (MonoString *name,
1046 MONO_ARCH_SAVE_REGS;
1048 *error = ERROR_SUCCESS;
1050 ret = OpenMutex (rights, FALSE, mono_string_chars (name));
1052 *error = GetLastError ();
1059 HANDLE ves_icall_System_Threading_Semaphore_CreateSemaphore_internal (gint32 initialCount, gint32 maximumCount, MonoString *name, MonoBoolean *created)
1063 MONO_ARCH_SAVE_REGS;
1068 sem = CreateSemaphore (NULL, initialCount, maximumCount, NULL);
1070 sem = CreateSemaphore (NULL, initialCount, maximumCount,
1071 mono_string_chars (name));
1073 if (GetLastError () == ERROR_ALREADY_EXISTS) {
1081 gint32 ves_icall_System_Threading_Semaphore_ReleaseSemaphore_internal (HANDLE handle, gint32 releaseCount, MonoBoolean *fail)
1085 MONO_ARCH_SAVE_REGS;
1087 *fail = !ReleaseSemaphore (handle, releaseCount, &prevcount);
1092 HANDLE ves_icall_System_Threading_Semaphore_OpenSemaphore_internal (MonoString *name, gint32 rights, gint32 *error)
1096 MONO_ARCH_SAVE_REGS;
1098 *error = ERROR_SUCCESS;
1100 ret = OpenSemaphore (rights, FALSE, mono_string_chars (name));
1102 *error = GetLastError ();
1108 HANDLE ves_icall_System_Threading_Events_CreateEvent_internal (MonoBoolean manual, MonoBoolean initial, MonoString *name, MonoBoolean *created)
1112 MONO_ARCH_SAVE_REGS;
1117 event = CreateEvent (NULL, manual, initial, NULL);
1119 event = CreateEvent (NULL, manual, initial,
1120 mono_string_chars (name));
1122 if (GetLastError () == ERROR_ALREADY_EXISTS) {
1130 gboolean ves_icall_System_Threading_Events_SetEvent_internal (HANDLE handle) {
1131 MONO_ARCH_SAVE_REGS;
1133 return (SetEvent(handle));
1136 gboolean ves_icall_System_Threading_Events_ResetEvent_internal (HANDLE handle) {
1137 MONO_ARCH_SAVE_REGS;
1139 return (ResetEvent(handle));
1143 ves_icall_System_Threading_Events_CloseEvent_internal (HANDLE handle) {
1144 MONO_ARCH_SAVE_REGS;
1146 CloseHandle (handle);
1149 HANDLE ves_icall_System_Threading_Events_OpenEvent_internal (MonoString *name,
1155 MONO_ARCH_SAVE_REGS;
1157 *error = ERROR_SUCCESS;
1159 ret = OpenEvent (rights, FALSE, mono_string_chars (name));
1161 *error = GetLastError ();
1167 gint32 ves_icall_System_Threading_Interlocked_Increment_Int (gint32 *location)
1169 MONO_ARCH_SAVE_REGS;
1171 return InterlockedIncrement (location);
1174 gint64 ves_icall_System_Threading_Interlocked_Increment_Long (gint64 *location)
1178 MONO_ARCH_SAVE_REGS;
1180 mono_interlocked_lock ();
1184 mono_interlocked_unlock ();
1190 gint32 ves_icall_System_Threading_Interlocked_Decrement_Int (gint32 *location)
1192 MONO_ARCH_SAVE_REGS;
1194 return InterlockedDecrement(location);
1197 gint64 ves_icall_System_Threading_Interlocked_Decrement_Long (gint64 * location)
1201 MONO_ARCH_SAVE_REGS;
1203 mono_interlocked_lock ();
1207 mono_interlocked_unlock ();
1212 gint32 ves_icall_System_Threading_Interlocked_Exchange_Int (gint32 *location, gint32 value)
1214 MONO_ARCH_SAVE_REGS;
1216 return InterlockedExchange(location, value);
1219 MonoObject * ves_icall_System_Threading_Interlocked_Exchange_Object (MonoObject **location, MonoObject *value)
1221 MONO_ARCH_SAVE_REGS;
1223 return (MonoObject *) InterlockedExchangePointer((gpointer *) location, value);
1226 gfloat ves_icall_System_Threading_Interlocked_Exchange_Single (gfloat *location, gfloat value)
1228 IntFloatUnion val, ret;
1230 MONO_ARCH_SAVE_REGS;
1233 ret.ival = InterlockedExchange((gint32 *) location, val.ival);
1239 ves_icall_System_Threading_Interlocked_Exchange_Long (gint64 *location, gint64 value)
1241 #if SIZEOF_VOID_P == 8
1242 return (gint64) InterlockedExchangePointer((gpointer *) location, (gpointer)value);
1247 * According to MSDN, this function is only atomic with regards to the
1248 * other Interlocked functions on 32 bit platforms.
1250 mono_interlocked_lock ();
1253 mono_interlocked_unlock ();
1260 ves_icall_System_Threading_Interlocked_Exchange_Double (gdouble *location, gdouble value)
1262 #if SIZEOF_VOID_P == 8
1263 LongDoubleUnion val, ret;
1266 ret.ival = (gint64)InterlockedExchangePointer((gpointer *) location, (gpointer)val.ival);
1273 * According to MSDN, this function is only atomic with regards to the
1274 * other Interlocked functions on 32 bit platforms.
1276 mono_interlocked_lock ();
1279 mono_interlocked_unlock ();
1285 gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int(gint32 *location, gint32 value, gint32 comparand)
1287 MONO_ARCH_SAVE_REGS;
1289 return InterlockedCompareExchange(location, value, comparand);
1292 MonoObject * ves_icall_System_Threading_Interlocked_CompareExchange_Object (MonoObject **location, MonoObject *value, MonoObject *comparand)
1294 MONO_ARCH_SAVE_REGS;
1296 return (MonoObject *) InterlockedCompareExchangePointer((gpointer *) location, value, comparand);
1299 gfloat ves_icall_System_Threading_Interlocked_CompareExchange_Single (gfloat *location, gfloat value, gfloat comparand)
1301 IntFloatUnion val, ret, cmp;
1303 MONO_ARCH_SAVE_REGS;
1306 cmp.fval = comparand;
1307 ret.ival = InterlockedCompareExchange((gint32 *) location, val.ival, cmp.ival);
1313 ves_icall_System_Threading_Interlocked_CompareExchange_Double (gdouble *location, gdouble value, gdouble comparand)
1315 #if SIZEOF_VOID_P == 8
1316 LongDoubleUnion val, comp, ret;
1319 comp.fval = comparand;
1320 ret.ival = (gint64)InterlockedCompareExchangePointer((gpointer *) location, (gpointer)val.ival, (gpointer)comp.ival);
1326 mono_interlocked_lock ();
1328 if (old == comparand)
1330 mono_interlocked_unlock ();
1337 ves_icall_System_Threading_Interlocked_CompareExchange_Long (gint64 *location, gint64 value, gint64 comparand)
1339 #if SIZEOF_VOID_P == 8
1340 return (gint64)InterlockedCompareExchangePointer((gpointer *) location, (gpointer)value, (gpointer)comparand);
1344 mono_interlocked_lock ();
1346 if (old == comparand)
1348 mono_interlocked_unlock ();
1355 ves_icall_System_Threading_Interlocked_CompareExchange_T (MonoObject **location, MonoObject *value, MonoObject *comparand)
1357 MONO_ARCH_SAVE_REGS;
1359 return InterlockedCompareExchangePointer ((gpointer *)location, value, comparand);
1363 ves_icall_System_Threading_Interlocked_Exchange_T (MonoObject **location, MonoObject *value)
1365 MONO_ARCH_SAVE_REGS;
1367 return InterlockedExchangePointer ((gpointer *)location, value);
1371 ves_icall_System_Threading_Interlocked_Add_Int (gint32 *location, gint32 value)
1373 #if SIZEOF_VOID_P == 8
1374 /* Should be implemented as a JIT intrinsic */
1375 mono_raise_exception (mono_get_exception_not_implemented (NULL));
1380 mono_interlocked_lock ();
1382 *location = orig + value;
1383 mono_interlocked_unlock ();
1390 ves_icall_System_Threading_Interlocked_Add_Long (gint64 *location, gint64 value)
1392 #if SIZEOF_VOID_P == 8
1393 /* Should be implemented as a JIT intrinsic */
1394 mono_raise_exception (mono_get_exception_not_implemented (NULL));
1399 mono_interlocked_lock ();
1401 *location = orig + value;
1402 mono_interlocked_unlock ();
1409 ves_icall_System_Threading_Interlocked_Read_Long (gint64 *location)
1411 #if SIZEOF_VOID_P == 8
1412 /* 64 bit reads are already atomic */
1417 mono_interlocked_lock ();
1419 mono_interlocked_unlock ();
1426 ves_icall_System_Threading_Thread_MemoryBarrier (void)
1428 /* Should be implemented as a JIT intrinsic */
1429 mono_raise_exception (mono_get_exception_not_implemented (NULL));
1433 ves_icall_System_Threading_Thread_ClrState (MonoThread* this, guint32 state)
1435 mono_monitor_enter (this->synch_lock);
1436 this->state &= ~state;
1437 if (state & ThreadState_Background) {
1438 /* If the thread changes the background mode, the main thread has to
1439 * be notified, since it has to rebuild the list of threads to
1442 SetEvent (background_change_event);
1444 mono_monitor_exit (this->synch_lock);
1448 ves_icall_System_Threading_Thread_SetState (MonoThread* this, guint32 state)
1450 mono_monitor_enter (this->synch_lock);
1451 this->state |= state;
1452 if (state & ThreadState_Background) {
1453 /* If the thread changes the background mode, the main thread has to
1454 * be notified, since it has to rebuild the list of threads to
1457 SetEvent (background_change_event);
1459 mono_monitor_exit (this->synch_lock);
1463 ves_icall_System_Threading_Thread_GetState (MonoThread* this)
1466 mono_monitor_enter (this->synch_lock);
1467 state = this->state;
1468 mono_monitor_exit (this->synch_lock);
1473 mono_thread_get_abort_signal (void)
1475 #if defined (__MINGW32__) || defined (_MSC_VER)
1481 static int abort_signum = -1;
1483 if (abort_signum != -1)
1484 return abort_signum;
1485 /* we try to avoid SIGRTMIN and any one that might have been set already, see bug #75387 */
1486 for (i = SIGRTMIN + 1; i < SIGRTMAX; ++i) {
1487 struct sigaction sinfo;
1488 sigaction (i, NULL, &sinfo);
1489 if (sinfo.sa_handler == SIG_DFL && (void*)sinfo.sa_sigaction == (void*)SIG_DFL) {
1494 /* fallback to the old way */
1497 #endif /*defined (__MINGW32__) || defined (_MSC_VER) */
1500 #if defined (__MINGW32__) || defined (_MSC_VER)
1501 static void CALLBACK interruption_request_apc (ULONG_PTR param)
1503 MonoException* exc = mono_thread_request_interruption (FALSE);
1504 if (exc) mono_raise_exception (exc);
1506 #endif /* defined (__MINGW32__) || defined (_MSC_VER) */
1509 * signal_thread_state_change
1511 * Tells the thread that his state has changed and it has to enter the new
1512 * state as soon as possible.
1514 static void signal_thread_state_change (MonoThread *thread)
1516 if (thread == mono_thread_current ()) {
1517 /* Do it synchronously */
1518 MonoException *exc = mono_thread_request_interruption (FALSE);
1520 mono_raise_exception (exc);
1523 #if defined (__MINGW32__) || defined (_MSC_VER)
1524 QueueUserAPC ((PAPCFUNC)interruption_request_apc, thread->handle, NULL);
1526 /* fixme: store the state somewhere */
1527 #ifdef PTHREAD_POINTER_ID
1528 pthread_kill ((gpointer)(gsize)(thread->tid), mono_thread_get_abort_signal ());
1530 pthread_kill (thread->tid, mono_thread_get_abort_signal ());
1532 #endif /* defined (__MINGW32__) || defined (__MSC_VER) */
1536 ves_icall_System_Threading_Thread_Abort (MonoThread *thread, MonoObject *state)
1538 MONO_ARCH_SAVE_REGS;
1540 mono_monitor_enter (thread->synch_lock);
1542 if ((thread->state & ThreadState_AbortRequested) != 0 ||
1543 (thread->state & ThreadState_StopRequested) != 0 ||
1544 (thread->state & ThreadState_Stopped) != 0)
1546 mono_monitor_exit (thread->synch_lock);
1550 if ((thread->state & ThreadState_Unstarted) != 0) {
1551 thread->state |= ThreadState_Aborted;
1552 mono_monitor_exit (thread->synch_lock);
1556 thread->state |= ThreadState_AbortRequested;
1557 thread->abort_state = state;
1558 thread->abort_exc = NULL;
1560 mono_monitor_exit (thread->synch_lock);
1562 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Abort requested for %p (%"G_GSIZE_FORMAT")", __func__, GetCurrentThreadId (), thread, (gsize)thread->tid));
1564 /* Make sure the thread is awake */
1565 mono_thread_resume (thread);
1567 signal_thread_state_change (thread);
1571 ves_icall_System_Threading_Thread_ResetAbort (void)
1573 MonoThread *thread = mono_thread_current ();
1575 MONO_ARCH_SAVE_REGS;
1577 mono_monitor_enter (thread->synch_lock);
1579 thread->state &= ~ThreadState_AbortRequested;
1581 if (!thread->abort_exc) {
1582 const char *msg = "Unable to reset abort because no abort was requested";
1583 mono_monitor_exit (thread->synch_lock);
1584 mono_raise_exception (mono_get_exception_thread_state (msg));
1586 thread->abort_exc = NULL;
1587 thread->abort_state = NULL;
1590 mono_monitor_exit (thread->synch_lock);
1594 mono_thread_suspend (MonoThread *thread)
1596 MONO_ARCH_SAVE_REGS;
1598 mono_monitor_enter (thread->synch_lock);
1600 if ((thread->state & ThreadState_Unstarted) != 0 ||
1601 (thread->state & ThreadState_Aborted) != 0 ||
1602 (thread->state & ThreadState_Stopped) != 0)
1604 mono_monitor_exit (thread->synch_lock);
1608 if ((thread->state & ThreadState_Suspended) != 0 ||
1609 (thread->state & ThreadState_SuspendRequested) != 0 ||
1610 (thread->state & ThreadState_StopRequested) != 0)
1612 mono_monitor_exit (thread->synch_lock);
1616 thread->state |= ThreadState_SuspendRequested;
1617 mono_monitor_exit (thread->synch_lock);
1619 signal_thread_state_change (thread);
1624 ves_icall_System_Threading_Thread_Suspend (MonoThread *thread)
1626 if (!mono_thread_suspend (thread))
1627 mono_raise_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
1631 mono_thread_resume (MonoThread *thread)
1633 MONO_ARCH_SAVE_REGS;
1635 mono_monitor_enter (thread->synch_lock);
1637 if ((thread->state & ThreadState_SuspendRequested) != 0) {
1638 thread->state &= ~ThreadState_SuspendRequested;
1639 mono_monitor_exit (thread->synch_lock);
1643 if ((thread->state & ThreadState_Suspended) == 0 ||
1644 (thread->state & ThreadState_Unstarted) != 0 ||
1645 (thread->state & ThreadState_Aborted) != 0 ||
1646 (thread->state & ThreadState_Stopped) != 0)
1648 mono_monitor_exit (thread->synch_lock);
1652 thread->resume_event = CreateEvent (NULL, TRUE, FALSE, NULL);
1654 /* Awake the thread */
1655 SetEvent (thread->suspend_event);
1657 mono_monitor_exit (thread->synch_lock);
1659 /* Wait for the thread to awake */
1660 WaitForSingleObject (thread->resume_event, INFINITE);
1661 CloseHandle (thread->resume_event);
1662 thread->resume_event = NULL;
1668 ves_icall_System_Threading_Thread_Resume (MonoThread *thread)
1670 if (!mono_thread_resume (thread))
1671 mono_raise_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
1675 find_wrapper (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
1680 if (m->wrapper_type == MONO_WRAPPER_RUNTIME_INVOKE ||
1681 m->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE ||
1682 m->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH)
1684 *((gboolean*)data) = TRUE;
1691 is_running_protected_wrapper (void)
1693 gboolean found = FALSE;
1694 mono_stack_walk (find_wrapper, &found);
1698 void mono_thread_stop (MonoThread *thread)
1700 mono_monitor_enter (thread->synch_lock);
1702 if ((thread->state & ThreadState_StopRequested) != 0 ||
1703 (thread->state & ThreadState_Stopped) != 0)
1705 mono_monitor_exit (thread->synch_lock);
1709 /* Make sure the thread is awake */
1710 mono_thread_resume (thread);
1712 thread->state |= ThreadState_StopRequested;
1713 thread->state &= ~ThreadState_AbortRequested;
1715 mono_monitor_exit (thread->synch_lock);
1717 signal_thread_state_change (thread);
1721 ves_icall_System_Threading_Thread_VolatileRead1 (void *ptr)
1723 return *((volatile gint8 *) (ptr));
1727 ves_icall_System_Threading_Thread_VolatileRead2 (void *ptr)
1729 return *((volatile gint16 *) (ptr));
1733 ves_icall_System_Threading_Thread_VolatileRead4 (void *ptr)
1735 return *((volatile gint32 *) (ptr));
1739 ves_icall_System_Threading_Thread_VolatileRead8 (void *ptr)
1741 return *((volatile gint64 *) (ptr));
1745 ves_icall_System_Threading_Thread_VolatileReadIntPtr (void *ptr)
1747 return (void *) *((volatile void **) ptr);
1751 ves_icall_System_Threading_Thread_VolatileWrite1 (void *ptr, gint8 value)
1753 *((volatile gint8 *) ptr) = value;
1757 ves_icall_System_Threading_Thread_VolatileWrite2 (void *ptr, gint16 value)
1759 *((volatile gint16 *) ptr) = value;
1763 ves_icall_System_Threading_Thread_VolatileWrite4 (void *ptr, gint32 value)
1765 *((volatile gint32 *) ptr) = value;
1769 ves_icall_System_Threading_Thread_VolatileWrite8 (void *ptr, gint64 value)
1771 *((volatile gint64 *) ptr) = value;
1775 ves_icall_System_Threading_Thread_VolatileWriteIntPtr (void *ptr, void *value)
1777 *((volatile void **) ptr) = value;
1780 void mono_thread_init (MonoThreadStartCB start_cb,
1781 MonoThreadAttachCB attach_cb)
1783 InitializeCriticalSection(&threads_mutex);
1784 InitializeCriticalSection(&interlocked_mutex);
1785 InitializeCriticalSection(&contexts_mutex);
1786 background_change_event = CreateEvent (NULL, TRUE, FALSE, NULL);
1788 mono_init_static_data_info (&thread_static_info);
1789 mono_init_static_data_info (&context_static_info);
1791 current_object_key=TlsAlloc();
1792 THREAD_DEBUG (g_message ("%s: Allocated current_object_key %d", __func__, current_object_key));
1794 mono_thread_start_cb = start_cb;
1795 mono_thread_attach_cb = attach_cb;
1797 /* Get a pseudo handle to the current process. This is just a
1798 * kludge so that wapi can build a process handle if needed.
1799 * As a pseudo handle is returned, we don't need to clean
1802 GetCurrentProcess ();
1806 mono_threads_install_cleanup (MonoThreadCleanupFunc func)
1808 mono_thread_cleanup = func;
1811 void mono_install_thread_callbacks (MonoThreadCallbacks *callbacks)
1813 mono_thread_callbacks = callbacks;
1817 static void print_tids (gpointer key, gpointer value, gpointer user)
1819 /* GPOINTER_TO_UINT breaks horribly if sizeof(void *) >
1820 * sizeof(uint) and a cast to uint would overflow
1822 /* Older versions of glib don't have G_GSIZE_FORMAT, so just
1823 * print this as a pointer.
1825 g_message ("Waiting for: %p", key);
1830 HANDLE handles[MAXIMUM_WAIT_OBJECTS];
1831 MonoThread *threads[MAXIMUM_WAIT_OBJECTS];
1835 static void wait_for_tids (struct wait_data *wait, guint32 timeout)
1839 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
1841 ret=WaitForMultipleObjectsEx(wait->num, wait->handles, TRUE, timeout, FALSE);
1843 if(ret==WAIT_FAILED) {
1844 /* See the comment in build_wait_tids() */
1845 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
1849 for(i=0; i<wait->num; i++)
1850 CloseHandle (wait->handles[i]);
1852 if (ret == WAIT_TIMEOUT)
1855 for(i=0; i<wait->num; i++) {
1856 gsize tid = wait->threads[i]->tid;
1858 if(mono_g_hash_table_lookup (threads, (gpointer)tid)!=NULL) {
1859 /* This thread must have been killed, because
1860 * it hasn't cleaned itself up. (It's just
1861 * possible that the thread exited before the
1862 * parent thread had a chance to store the
1863 * handle, and now there is another pointer to
1864 * the already-exited thread stored. In this
1865 * case, we'll just get two
1866 * mono_profiler_thread_end() calls for the
1870 THREAD_DEBUG (g_message ("%s: cleaning up after thread %"G_GSIZE_FORMAT, __func__, tid));
1871 thread_cleanup (wait->threads[i]);
1876 static void wait_for_tids_or_state_change (struct wait_data *wait, guint32 timeout)
1878 guint32 i, ret, count;
1880 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
1882 /* Add the thread state change event, so it wakes up if a thread changes
1883 * to background mode.
1886 if (count < MAXIMUM_WAIT_OBJECTS) {
1887 wait->handles [count] = background_change_event;
1891 ret=WaitForMultipleObjectsEx (count, wait->handles, FALSE, timeout, FALSE);
1893 if(ret==WAIT_FAILED) {
1894 /* See the comment in build_wait_tids() */
1895 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
1899 for(i=0; i<wait->num; i++)
1900 CloseHandle (wait->handles[i]);
1902 if (ret == WAIT_TIMEOUT)
1905 if (ret < wait->num) {
1906 gsize tid = wait->threads[ret]->tid;
1907 mono_threads_lock ();
1908 if (mono_g_hash_table_lookup (threads, (gpointer)tid)!=NULL) {
1909 /* See comment in wait_for_tids about thread cleanup */
1910 mono_threads_unlock ();
1911 THREAD_DEBUG (g_message ("%s: cleaning up after thread %"G_GSIZE_FORMAT, __func__, tid));
1912 thread_cleanup (wait->threads [ret]);
1914 mono_threads_unlock ();
1918 static void build_wait_tids (gpointer key, gpointer value, gpointer user)
1920 struct wait_data *wait=(struct wait_data *)user;
1922 if(wait->num<MAXIMUM_WAIT_OBJECTS) {
1924 MonoThread *thread=(MonoThread *)value;
1926 /* Ignore background threads, we abort them later */
1927 mono_monitor_enter (thread->synch_lock);
1928 if (thread->state & ThreadState_Background) {
1929 mono_monitor_exit (thread->synch_lock);
1930 return; /* just leave, ignore */
1932 mono_monitor_exit (thread->synch_lock);
1934 if (mono_gc_is_finalizer_thread (thread))
1937 if (thread == mono_thread_current ())
1940 if (thread == mono_thread_get_main ())
1943 handle = OpenThread (THREAD_ALL_ACCESS, TRUE, thread->tid);
1947 wait->handles[wait->num]=handle;
1948 wait->threads[wait->num]=thread;
1951 /* Just ignore the rest, we can't do anything with
1958 remove_and_abort_threads (gpointer key, gpointer value, gpointer user)
1960 struct wait_data *wait=(struct wait_data *)user;
1961 gsize self = GetCurrentThreadId ();
1962 MonoThread *thread = (MonoThread *) value;
1965 if (wait->num >= MAXIMUM_WAIT_OBJECTS)
1968 /* The finalizer thread is not a background thread */
1969 if (thread->tid != self && (thread->state & ThreadState_Background) != 0) {
1971 handle = OpenThread (THREAD_ALL_ACCESS, TRUE, thread->tid);
1975 if(thread->state & ThreadState_AbortRequested ||
1976 thread->state & ThreadState_Aborted) {
1977 THREAD_DEBUG (g_message ("%s: Thread id %"G_GSIZE_FORMAT" already aborting", __func__, (gsize)thread->tid));
1981 /* printf ("A: %d\n", wait->num); */
1982 wait->handles[wait->num]=thread->handle;
1983 wait->threads[wait->num]=thread;
1986 THREAD_DEBUG (g_print ("%s: Aborting id: %"G_GSIZE_FORMAT"\n", __func__, (gsize)thread->tid));
1987 mono_thread_stop (thread);
1991 return (thread->tid != self && !mono_gc_is_finalizer_thread (thread));
1994 void mono_thread_manage (void)
1996 struct wait_data *wait=g_new0 (struct wait_data, 1);
1998 /* join each thread that's still running */
1999 THREAD_DEBUG (g_message ("%s: Joining each running thread...", __func__));
2001 mono_threads_lock ();
2003 THREAD_DEBUG (g_message("%s: No threads", __func__));
2004 mono_threads_unlock ();
2007 mono_threads_unlock ();
2010 mono_threads_lock ();
2011 THREAD_DEBUG (g_message ("%s: There are %d threads to join", __func__, mono_g_hash_table_size (threads));
2012 mono_g_hash_table_foreach (threads, print_tids, NULL));
2014 ResetEvent (background_change_event);
2016 mono_g_hash_table_foreach (threads, build_wait_tids, wait);
2017 mono_threads_unlock ();
2019 /* Something to wait for */
2020 wait_for_tids_or_state_change (wait, INFINITE);
2022 THREAD_DEBUG (g_message ("%s: I have %d threads after waiting.", __func__, wait->num));
2023 } while(wait->num>0);
2025 mono_runtime_set_shutting_down ();
2027 THREAD_DEBUG (g_message ("%s: threadpool cleanup", __func__));
2028 mono_thread_pool_cleanup ();
2031 * Remove everything but the finalizer thread and self.
2032 * Also abort all the background threads
2035 mono_threads_lock ();
2038 mono_g_hash_table_foreach_remove (threads, remove_and_abort_threads, wait);
2040 mono_threads_unlock ();
2042 THREAD_DEBUG (g_message ("%s: wait->num is now %d", __func__, wait->num));
2044 /* Something to wait for */
2045 wait_for_tids (wait, INFINITE);
2047 } while (wait->num > 0);
2049 #if !defined(PLATFORM_WIN32) && !defined(RUN_IN_SUBTHREAD)
2050 /* The main thread must abandon any held mutexes (particularly
2051 * important for named mutexes as they are shared across
2052 * processes, see bug 74680.) This will happen when the
2053 * thread exits, but if it's not running in a subthread it
2054 * won't exit in time.
2056 /* Using non-w32 API is a nasty kludge, but I couldn't find
2057 * anything in the documentation that would let me do this
2058 * here yet still be safe to call on windows.
2060 _wapi_thread_abandon_mutexes (GetCurrentThread ());
2064 * give the subthreads a chance to really quit (this is mainly needed
2065 * to get correct user and system times from getrusage/wait/time(1)).
2066 * This could be removed if we avoid pthread_detach() and use pthread_join().
2068 #ifndef PLATFORM_WIN32
2075 static void terminate_thread (gpointer key, gpointer value, gpointer user)
2077 MonoThread *thread=(MonoThread *)value;
2079 if(thread->tid != (gsize)user) {
2080 /*TerminateThread (thread->handle, -1);*/
2084 void mono_thread_abort_all_other_threads (void)
2086 gsize self = GetCurrentThreadId ();
2088 mono_threads_lock ();
2089 THREAD_DEBUG (g_message ("%s: There are %d threads to abort", __func__,
2090 mono_g_hash_table_size (threads));
2091 mono_g_hash_table_foreach (threads, print_tids, NULL));
2093 mono_g_hash_table_foreach (threads, terminate_thread, (gpointer)self);
2095 mono_threads_unlock ();
2099 collect_threads (gpointer key, gpointer value, gpointer user_data)
2101 MonoThread *thread = (MonoThread*)value;
2102 struct wait_data *wait = (struct wait_data*)user_data;
2105 if (wait->num<MAXIMUM_WAIT_OBJECTS) {
2106 handle = OpenThread (THREAD_ALL_ACCESS, TRUE, thread->tid);
2110 wait->handles [wait->num] = handle;
2111 wait->threads [wait->num] = thread;
2117 * mono_thread_suspend_all_other_threads:
2119 * Suspend all managed threads except the finalizer thread and this thread.
2121 void mono_thread_suspend_all_other_threads (void)
2123 struct wait_data *wait = g_new0 (struct wait_data, 1);
2125 gsize self = GetCurrentThreadId ();
2127 guint32 eventidx = 0;
2130 * Make a copy of the hashtable since we can't do anything with
2131 * threads while threads_mutex is held.
2133 mono_threads_lock ();
2134 mono_g_hash_table_foreach (threads, collect_threads, wait);
2135 mono_threads_unlock ();
2137 events = g_new0 (gpointer, wait->num);
2139 /* Get the suspended events that we'll be waiting for */
2140 for (i = 0; i < wait->num; ++i) {
2141 MonoThread *thread = wait->threads [i];
2143 if ((thread->tid == self) || mono_gc_is_finalizer_thread (thread)) {
2144 //CloseHandle (wait->handles [i]);
2145 wait->threads [i] = NULL; /* ignore this thread in next loop */
2149 mono_monitor_enter (thread->synch_lock);
2151 if ((thread->state & ThreadState_Suspended) != 0 ||
2152 (thread->state & ThreadState_SuspendRequested) != 0 ||
2153 (thread->state & ThreadState_StopRequested) != 0 ||
2154 (thread->state & ThreadState_Stopped) != 0) {
2155 mono_monitor_exit (thread->synch_lock);
2156 CloseHandle (wait->handles [i]);
2157 wait->threads [i] = NULL; /* ignore this thread in next loop */
2161 /* Convert abort requests into suspend requests */
2162 if ((thread->state & ThreadState_AbortRequested) != 0)
2163 thread->state &= ~ThreadState_AbortRequested;
2165 thread->state |= ThreadState_SuspendRequested;
2167 if (thread->suspended_event == NULL)
2168 thread->suspended_event = CreateEvent (NULL, TRUE, FALSE, NULL);
2170 events [eventidx++] = thread->suspended_event;
2171 mono_monitor_exit (thread->synch_lock);
2173 /* Signal the thread to suspend */
2174 signal_thread_state_change (thread);
2177 WaitForMultipleObjectsEx (eventidx, events, TRUE, INFINITE, FALSE);
2178 for (i = 0; i < wait->num; ++i) {
2179 MonoThread *thread = wait->threads [i];
2184 mono_monitor_enter (thread->synch_lock);
2185 CloseHandle (thread->suspended_event);
2186 thread->suspended_event = NULL;
2187 mono_monitor_exit (thread->synch_lock);
2195 * mono_threads_request_thread_dump:
2197 * Ask all threads except the current to print their stacktrace to stdout.
2200 mono_threads_request_thread_dump (void)
2202 struct wait_data *wait = g_new0 (struct wait_data, 1);
2206 * Make a copy of the hashtable since we can't do anything with
2207 * threads while threads_mutex is held.
2209 mono_threads_lock ();
2210 mono_g_hash_table_foreach (threads, collect_threads, wait);
2211 mono_threads_unlock ();
2213 for (i = 0; i < wait->num; ++i) {
2214 MonoThread *thread = wait->threads [i];
2216 if (!mono_gc_is_finalizer_thread (thread) && (thread != mono_thread_current ()) && !thread->thread_dump_requested) {
2217 thread->thread_dump_requested = TRUE;
2219 signal_thread_state_change (thread);
2222 CloseHandle (wait->handles [i]);
2227 * mono_thread_push_appdomain_ref:
2229 * Register that the current thread may have references to objects in domain
2230 * @domain on its stack. Each call to this function should be paired with a
2231 * call to pop_appdomain_ref.
2234 mono_thread_push_appdomain_ref (MonoDomain *domain)
2236 MonoThread *thread = mono_thread_current ();
2239 /* printf ("PUSH REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, domain->friendly_name); */
2240 mono_threads_lock ();
2241 thread->appdomain_refs = g_slist_prepend (thread->appdomain_refs, domain);
2242 mono_threads_unlock ();
2247 mono_thread_pop_appdomain_ref (void)
2249 MonoThread *thread = mono_thread_current ();
2252 /* printf ("POP REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, ((MonoDomain*)(thread->appdomain_refs->data))->friendly_name); */
2253 mono_threads_lock ();
2254 /* FIXME: How can the list be empty ? */
2255 if (thread->appdomain_refs)
2256 thread->appdomain_refs = g_slist_remove (thread->appdomain_refs, thread->appdomain_refs->data);
2257 mono_threads_unlock ();
2262 mono_thread_has_appdomain_ref (MonoThread *thread, MonoDomain *domain)
2265 mono_threads_lock ();
2266 res = g_slist_find (thread->appdomain_refs, domain) != NULL;
2267 mono_threads_unlock ();
2271 typedef struct abort_appdomain_data {
2272 struct wait_data wait;
2274 } abort_appdomain_data;
2277 abort_appdomain_thread (gpointer key, gpointer value, gpointer user_data)
2279 MonoThread *thread = (MonoThread*)value;
2280 abort_appdomain_data *data = (abort_appdomain_data*)user_data;
2281 MonoDomain *domain = data->domain;
2283 if (mono_thread_has_appdomain_ref (thread, domain)) {
2284 HANDLE handle = OpenThread (THREAD_ALL_ACCESS, TRUE, thread->tid);
2288 /* printf ("ABORTING THREAD %p BECAUSE IT REFERENCES DOMAIN %s.\n", thread->tid, domain->friendly_name); */
2290 ves_icall_System_Threading_Thread_Abort (thread, NULL);
2292 if(data->wait.num<MAXIMUM_WAIT_OBJECTS) {
2293 data->wait.handles [data->wait.num] = handle;
2294 data->wait.threads [data->wait.num] = thread;
2297 /* Just ignore the rest, we can't do anything with
2305 * mono_threads_abort_appdomain_threads:
2307 * Abort threads which has references to the given appdomain.
2310 mono_threads_abort_appdomain_threads (MonoDomain *domain, int timeout)
2312 abort_appdomain_data user_data;
2315 /* printf ("ABORT BEGIN.\n"); */
2317 start_time = GetTickCount ();
2319 mono_threads_lock ();
2321 user_data.domain = domain;
2322 user_data.wait.num = 0;
2323 mono_g_hash_table_foreach (threads, abort_appdomain_thread, &user_data);
2324 mono_threads_unlock ();
2326 if (user_data.wait.num > 0)
2328 * We should wait for the threads either to abort, or to leave the
2329 * domain. We can't do the latter, so we wait with a timeout.
2331 wait_for_tids (&user_data.wait, 100);
2333 /* Update remaining time */
2334 timeout -= GetTickCount () - start_time;
2335 start_time = GetTickCount ();
2340 while (user_data.wait.num > 0);
2342 /* printf ("ABORT DONE.\n"); */
2348 clear_cached_culture (gpointer key, gpointer value, gpointer user_data)
2350 MonoThread *thread = (MonoThread*)value;
2351 MonoDomain *domain = (MonoDomain*)user_data;
2354 /* No locking needed here */
2356 if (thread->culture_info) {
2357 for (i = 0; i < NUM_CACHED_CULTURES; ++i) {
2358 if (thread->culture_info [i] && thread->culture_info [i]->vtable->domain == domain)
2359 thread->culture_info [i] = NULL;
2362 if (thread->ui_culture_info) {
2363 for (i = 0; i < NUM_CACHED_CULTURES; ++i) {
2364 if (thread->ui_culture_info [i] && thread->ui_culture_info [i]->vtable->domain == domain)
2365 thread->ui_culture_info [i] = NULL;
2371 * mono_threads_clear_cached_culture:
2373 * Clear the cached_current_culture from all threads if it is in the
2377 mono_threads_clear_cached_culture (MonoDomain *domain)
2379 mono_threads_lock ();
2380 mono_g_hash_table_foreach (threads, clear_cached_culture, domain);
2381 mono_threads_unlock ();
2385 * mono_thread_get_pending_exception:
2387 * Return an exception which needs to be raised when leaving a catch clause.
2388 * This is used for undeniable exception propagation.
2391 mono_thread_get_pending_exception (void)
2393 MonoThread *thread = mono_thread_current ();
2395 MONO_ARCH_SAVE_REGS;
2397 if (thread && thread->abort_exc && !is_running_protected_wrapper ()) {
2399 * FIXME: Clear the abort exception and return an AppDomainUnloaded
2400 * exception if the thread no longer references a dying appdomain.
2402 thread->abort_exc->trace_ips = NULL;
2403 thread->abort_exc->stack_trace = NULL;
2404 return thread->abort_exc;
2410 #define NUM_STATIC_DATA_IDX 8
2411 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
2412 1024, 4096, 16384, 65536, 262144, 1048576, 4194304, 16777216
2417 * mono_alloc_static_data
2419 * Allocate memory blocks for storing threads or context static data
2422 mono_alloc_static_data (gpointer **static_data_ptr, guint32 offset)
2424 guint idx = (offset >> 24) - 1;
2427 gpointer* static_data = *static_data_ptr;
2429 static_data = mono_gc_alloc_fixed (static_data_size [0], NULL);
2430 *static_data_ptr = static_data;
2431 static_data [0] = static_data;
2434 for (i = 1; i <= idx; ++i) {
2435 if (static_data [i])
2437 static_data [i] = mono_gc_alloc_fixed (static_data_size [i], NULL);
2442 * mono_init_static_data_info
2444 * Initializes static data counters
2446 static void mono_init_static_data_info (StaticDataInfo *static_data)
2448 static_data->idx = 0;
2449 static_data->offset = 0;
2453 * mono_alloc_static_data_slot
2455 * Generates an offset for static data. static_data contains the counters
2456 * used to generate it.
2459 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align)
2463 if (!static_data->idx && !static_data->offset) {
2465 * we use the first chunk of the first allocation also as
2466 * an array for the rest of the data
2468 static_data->offset = sizeof (gpointer) * NUM_STATIC_DATA_IDX;
2470 static_data->offset += align - 1;
2471 static_data->offset &= ~(align - 1);
2472 if (static_data->offset + size >= static_data_size [static_data->idx]) {
2473 static_data->idx ++;
2474 g_assert (size <= static_data_size [static_data->idx]);
2476 * massive unloading and reloading of domains with thread-static
2477 * data may eventually exceed the allocated storage...
2478 * Need to check what the MS runtime does in that case.
2479 * Note that for each appdomain, we need to allocate a separate
2480 * thread data slot for security reasons. We could keep track
2481 * of the slots per-domain and when the domain is unloaded
2482 * out the slots on a sort of free list.
2484 g_assert (static_data->idx < NUM_STATIC_DATA_IDX);
2485 static_data->offset = 0;
2487 offset = static_data->offset | ((static_data->idx + 1) << 24);
2488 static_data->offset += size;
2493 * ensure thread static fields already allocated are valid for thread
2494 * This function is called when a thread is created or on thread attach.
2497 thread_adjust_static_data (MonoThread *thread)
2501 mono_threads_lock ();
2502 if (thread_static_info.offset || thread_static_info.idx > 0) {
2503 /* get the current allocated size */
2504 offset = thread_static_info.offset | ((thread_static_info.idx + 1) << 24);
2505 mono_alloc_static_data (&(thread->static_data), offset);
2507 mono_threads_unlock ();
2511 alloc_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
2513 MonoThread *thread = value;
2514 guint32 offset = GPOINTER_TO_UINT (user);
2516 mono_alloc_static_data (&(thread->static_data), offset);
2520 * The offset for a special static variable is composed of three parts:
2521 * a bit that indicates the type of static data (0:thread, 1:context),
2522 * an index in the array of chunks of memory for the thread (thread->static_data)
2523 * and an offset in that chunk of mem. This allows allocating less memory in the
2528 mono_alloc_special_static_data (guint32 static_type, guint32 size, guint32 align)
2531 if (static_type == SPECIAL_STATIC_THREAD)
2533 mono_threads_lock ();
2534 offset = mono_alloc_static_data_slot (&thread_static_info, size, align);
2535 /* This can be called during startup */
2536 if (threads != NULL)
2537 mono_g_hash_table_foreach (threads, alloc_thread_static_data_helper, GUINT_TO_POINTER (offset));
2538 mono_threads_unlock ();
2542 g_assert (static_type == SPECIAL_STATIC_CONTEXT);
2543 mono_contexts_lock ();
2544 offset = mono_alloc_static_data_slot (&context_static_info, size, align);
2545 mono_contexts_unlock ();
2546 offset |= 0x80000000; /* Set the high bit to indicate context static data */
2552 mono_get_special_static_data (guint32 offset)
2554 /* The high bit means either thread (0) or static (1) data. */
2556 guint32 static_type = (offset & 0x80000000);
2559 offset &= 0x7fffffff;
2560 idx = (offset >> 24) - 1;
2562 if (static_type == 0)
2564 MonoThread *thread = mono_thread_current ();
2565 return ((char*) thread->static_data [idx]) + (offset & 0xffffff);
2569 /* Allocate static data block under demand, since we don't have a list
2572 MonoAppContext *context = mono_context_get ();
2573 if (!context->static_data || !context->static_data [idx]) {
2574 mono_contexts_lock ();
2575 mono_alloc_static_data (&(context->static_data), offset);
2576 mono_contexts_unlock ();
2578 return ((char*) context->static_data [idx]) + (offset & 0xffffff);
2582 static MonoClassField *local_slots = NULL;
2585 /* local tls data to get locals_slot from a thread */
2588 /* index in the locals_slot array */
2593 clear_local_slot (gpointer key, gpointer value, gpointer user_data)
2595 LocalSlotID *sid = user_data;
2596 MonoThread *thread = (MonoThread*)value;
2597 MonoArray *slots_array;
2599 * the static field is stored at: ((char*) thread->static_data [idx]) + (offset & 0xffffff);
2600 * it is for the right domain, so we need to check if it is allocated an initialized
2601 * for the current thread.
2603 /*g_print ("handling thread %p\n", thread);*/
2604 if (!thread->static_data || !thread->static_data [sid->idx])
2606 slots_array = *(MonoArray **)(((char*) thread->static_data [sid->idx]) + (sid->offset & 0xffffff));
2607 if (!slots_array || sid->slot >= mono_array_length (slots_array))
2609 mono_array_set (slots_array, MonoObject*, sid->slot, NULL);
2613 mono_thread_free_local_slot_values (int slot, MonoBoolean thread_local)
2621 local_slots = mono_class_get_field_from_name (mono_defaults.thread_class, "local_slots");
2623 g_warning ("local_slots field not found in Thread class");
2627 domain = mono_domain_get ();
2628 mono_domain_lock (domain);
2629 if (domain->special_static_fields)
2630 addr = g_hash_table_lookup (domain->special_static_fields, local_slots);
2631 mono_domain_unlock (domain);
2634 /*g_print ("freeing slot %d at %p\n", slot, addr);*/
2635 sid.offset = GPOINTER_TO_UINT (addr);
2636 sid.offset &= 0x7fffffff;
2637 sid.idx = (sid.offset >> 24) - 1;
2638 mono_threads_lock ();
2639 mono_g_hash_table_foreach (threads, clear_local_slot, &sid);
2640 mono_threads_unlock ();
2642 /* FIXME: clear the slot for MonoAppContexts, too */
2646 static void gc_stop_world (gpointer key, gpointer value, gpointer user)
2648 MonoThread *thread=(MonoThread *)value;
2650 LIBGC_DEBUG (g_message ("%s: %"G_GSIZE_FORMAT" - %"G_GSIZE_FORMAT, __func__, (gsize)user, (gsize)thread->tid));
2652 if(thread->tid == (gsize)user)
2655 SuspendThread (thread->handle);
2658 void mono_gc_stop_world (void)
2660 gsize self = GetCurrentThreadId ();
2662 LIBGC_DEBUG (g_message ("%s: %"G_GSIZE_FORMAT" - %p", __func__, self, threads));
2664 mono_threads_lock ();
2666 if (threads != NULL)
2667 mono_g_hash_table_foreach (threads, gc_stop_world, (gpointer)self);
2669 mono_threads_unlock ();
2672 static void gc_start_world (gpointer key, gpointer value, gpointer user)
2674 MonoThread *thread=(MonoThread *)value;
2676 LIBGC_DEBUG (g_message ("%s: %"G_GSIZE_FORMAT" - %"G_GSIZE_FORMAT, __func__, (gsize)user, (gsize)thread->tid));
2678 if(thread->tid == (gsize)user)
2681 ResumeThread (thread->handle);
2684 void mono_gc_start_world (void)
2686 gsize self = GetCurrentThreadId ();
2688 LIBGC_DEBUG (g_message ("%s: %"G_GSIZE_FORMAT" - %p", __func__, self, threads));
2690 mono_threads_lock ();
2692 if (threads != NULL)
2693 mono_g_hash_table_foreach (threads, gc_start_world, (gpointer)self);
2695 mono_threads_unlock ();
2699 static CALLBACK void dummy_apc (ULONG_PTR param)
2703 static guint32 dummy_apc (gpointer param)
2710 * mono_thread_execute_interruption
2712 * Performs the operation that the requested thread state requires (abort,
2715 static MonoException* mono_thread_execute_interruption (MonoThread *thread)
2717 mono_monitor_enter (thread->synch_lock);
2719 if (thread->interruption_requested) {
2720 /* this will consume pending APC calls */
2721 WaitForSingleObjectEx (GetCurrentThread(), 0, TRUE);
2722 InterlockedDecrement (&thread_interruption_requested);
2723 thread->interruption_requested = FALSE;
2726 if ((thread->state & ThreadState_AbortRequested) != 0) {
2727 if (thread->abort_exc == NULL)
2728 thread->abort_exc = mono_get_exception_thread_abort ();
2729 mono_monitor_exit (thread->synch_lock);
2730 return thread->abort_exc;
2732 else if ((thread->state & ThreadState_SuspendRequested) != 0) {
2733 thread->state &= ~ThreadState_SuspendRequested;
2734 thread->state |= ThreadState_Suspended;
2735 thread->suspend_event = CreateEvent (NULL, TRUE, FALSE, NULL);
2736 if (thread->suspended_event)
2737 SetEvent (thread->suspended_event);
2738 mono_monitor_exit (thread->synch_lock);
2740 WaitForSingleObject (thread->suspend_event, INFINITE);
2742 mono_monitor_enter (thread->synch_lock);
2743 CloseHandle (thread->suspend_event);
2744 thread->suspend_event = NULL;
2745 thread->state &= ~ThreadState_Suspended;
2747 /* The thread that requested the resume will have replaced this event
2748 * and will be waiting for it
2750 SetEvent (thread->resume_event);
2751 mono_monitor_exit (thread->synch_lock);
2754 else if ((thread->state & ThreadState_StopRequested) != 0) {
2755 /* FIXME: do this through the JIT? */
2756 mono_monitor_exit (thread->synch_lock);
2757 mono_thread_exit ();
2761 mono_monitor_exit (thread->synch_lock);
2766 * mono_thread_request_interruption
2768 * A signal handler can call this method to request the interruption of a
2769 * thread. The result of the interruption will depend on the current state of
2770 * the thread. If the result is an exception that needs to be throw, it is
2771 * provided as return value.
2773 MonoException* mono_thread_request_interruption (gboolean running_managed)
2775 MonoThread *thread = mono_thread_current ();
2777 /* The thread may already be stopping */
2781 mono_monitor_enter (thread->synch_lock);
2783 if (thread->interruption_requested) {
2784 mono_monitor_exit (thread->synch_lock);
2788 if (!running_managed || is_running_protected_wrapper ()) {
2789 /* Can't stop while in unmanaged code. Increase the global interruption
2790 request count. When exiting the unmanaged method the count will be
2791 checked and the thread will be interrupted. */
2793 InterlockedIncrement (&thread_interruption_requested);
2794 thread->interruption_requested = TRUE;
2795 mono_monitor_exit (thread->synch_lock);
2797 /* this will awake the thread if it is in WaitForSingleObject
2799 QueueUserAPC ((PAPCFUNC)dummy_apc, thread->handle, NULL);
2803 mono_monitor_exit (thread->synch_lock);
2804 return mono_thread_execute_interruption (thread);
2808 gboolean mono_thread_interruption_requested ()
2810 if (thread_interruption_requested) {
2811 MonoThread *thread = mono_thread_current ();
2812 /* The thread may already be stopping */
2814 return (thread->interruption_requested);
2819 static void mono_thread_interruption_checkpoint_request (gboolean bypass_abort_protection)
2821 MonoThread *thread = mono_thread_current ();
2823 /* The thread may already be stopping */
2827 if (thread->interruption_requested && (bypass_abort_protection || !is_running_protected_wrapper ())) {
2828 MonoException* exc = mono_thread_execute_interruption (thread);
2829 if (exc) mono_raise_exception (exc);
2834 * Performs the interruption of the current thread, if one has been requested,
2835 * and the thread is not running a protected wrapper.
2837 void mono_thread_interruption_checkpoint ()
2839 mono_thread_interruption_checkpoint_request (FALSE);
2843 * Performs the interruption of the current thread, if one has been requested.
2845 void mono_thread_force_interruption_checkpoint ()
2847 mono_thread_interruption_checkpoint_request (TRUE);
2851 * mono_thread_interruption_request_flag:
2853 * Returns the address of a flag that will be non-zero if an interruption has
2854 * been requested for a thread. The thread to interrupt may not be the current
2855 * thread, so an additional call to mono_thread_interruption_requested() or
2856 * mono_thread_interruption_checkpoint() is allways needed if the flag is not
2859 gint32* mono_thread_interruption_request_flag ()
2861 return &thread_interruption_requested;
2864 static void debugger_create_all_threads (gpointer key, gpointer value, gpointer user)
2866 MonoThread *thread = (MonoThread *)value;
2867 (* mono_thread_callbacks->thread_created) (thread->tid, thread->stack_ptr, NULL);
2871 mono_debugger_create_all_threads (void)
2873 mono_threads_lock ();
2874 mono_g_hash_table_foreach (threads, debugger_create_all_threads, NULL);
2875 mono_threads_unlock ();