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/metadata/mono-debug-debugger.h>
35 #include <mono/utils/mono-compiler.h>
37 #include <mono/os/gc_wrapper.h>
39 /*#define THREAD_DEBUG(a) do { a; } while (0)*/
40 #define THREAD_DEBUG(a)
41 /*#define THREAD_WAIT_DEBUG(a) do { a; } while (0)*/
42 #define THREAD_WAIT_DEBUG(a)
43 /*#define LIBGC_DEBUG(a) do { a; } while (0)*/
44 #define LIBGC_DEBUG(a)
46 /* Provide this for systems with glib < 2.6 */
47 #ifndef G_GSIZE_FORMAT
48 # if GLIB_SIZEOF_LONG == 8
49 # define G_GSIZE_FORMAT "lu"
51 # define G_GSIZE_FORMAT "u"
57 guint32 (*func)(void *);
79 /* Number of cached culture objects in the MonoThread->cached_culture_info array
80 * (per-type): we use the first NUM entries for CultureInfo and the last for
81 * UICultureInfo. So the size of the array is really NUM_CACHED_CULTURES * 2.
83 #define NUM_CACHED_CULTURES 4
84 #define CULTURES_START_IDX 0
85 #define UICULTURES_START_IDX NUM_CACHED_CULTURES
88 * The "os_handle" field of the WaitHandle class.
90 static MonoClassField *wait_handle_os_handle_field = NULL;
92 /* Controls access to the 'threads' hash table */
93 #define mono_threads_lock() EnterCriticalSection (&threads_mutex)
94 #define mono_threads_unlock() LeaveCriticalSection (&threads_mutex)
95 static CRITICAL_SECTION threads_mutex;
97 /* Controls access to context static data */
98 #define mono_contexts_lock() EnterCriticalSection (&contexts_mutex)
99 #define mono_contexts_unlock() LeaveCriticalSection (&contexts_mutex)
100 static CRITICAL_SECTION contexts_mutex;
102 /* Holds current status of static data heap */
103 static StaticDataInfo thread_static_info;
104 static StaticDataInfo context_static_info;
106 /* The hash of existing threads (key is thread ID) that need joining
109 static MonoGHashTable *threads=NULL;
111 /* The TLS key that holds the MonoObject assigned to each thread */
112 static guint32 current_object_key = -1;
114 #ifdef HAVE_KW_THREAD
115 /* we need to use both the Tls* functions and __thread because
116 * the gc needs to see all the threads
118 static __thread MonoThread * tls_current_object MONO_TLS_FAST;
119 #define SET_CURRENT_OBJECT(x) do { \
120 tls_current_object = x; \
121 TlsSetValue (current_object_key, x); \
123 #define GET_CURRENT_OBJECT() tls_current_object
125 #define SET_CURRENT_OBJECT(x) TlsSetValue (current_object_key, x);
126 #define GET_CURRENT_OBJECT() (MonoThread*) TlsGetValue (current_object_key);
129 /* function called at thread start */
130 static MonoThreadStartCB mono_thread_start_cb = NULL;
132 /* function called at thread attach */
133 static MonoThreadAttachCB mono_thread_attach_cb = NULL;
135 /* function called at thread cleanup */
136 static MonoThreadCleanupFunc mono_thread_cleanup_fn = NULL;
138 /* The default stack size for each thread */
139 static guint32 default_stacksize = 0;
140 #define default_stacksize_for_thread(thread) ((thread)->stack_size? (thread)->stack_size: default_stacksize)
142 static void thread_adjust_static_data (MonoThread *thread);
143 static void mono_init_static_data_info (StaticDataInfo *static_data);
144 static guint32 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align);
145 static gboolean mono_thread_resume (MonoThread* thread);
146 static void mono_thread_start (MonoThread *thread);
148 /* Spin lock for InterlockedXXX 64 bit functions */
149 #define mono_interlocked_lock() EnterCriticalSection (&interlocked_mutex)
150 #define mono_interlocked_unlock() LeaveCriticalSection (&interlocked_mutex)
151 static CRITICAL_SECTION interlocked_mutex;
153 /* global count of thread interruptions requested */
154 static gint32 thread_interruption_requested = 0;
156 /* Event signaled when a thread changes its background mode */
157 static HANDLE background_change_event;
160 mono_thread_get_tls_key (void)
162 return current_object_key;
166 mono_thread_get_tls_offset (void)
169 MONO_THREAD_VAR_OFFSET (tls_current_object,offset);
173 /* handle_store() and handle_remove() manage the array of threads that
174 * still need to be waited for when the main thread exits.
176 static void handle_store(MonoThread *thread)
178 mono_threads_lock ();
180 THREAD_DEBUG (g_message ("%s: thread %p ID %"G_GSIZE_FORMAT, __func__, thread, (gsize)thread->tid));
183 MONO_GC_REGISTER_ROOT (threads);
184 threads=mono_g_hash_table_new(NULL, NULL);
187 /* We don't need to duplicate thread->handle, because it is
188 * only closed when the thread object is finalized by the GC.
190 mono_g_hash_table_insert(threads, (gpointer)(gsize)(thread->tid),
193 mono_threads_unlock ();
196 static void handle_remove(gsize tid)
198 THREAD_DEBUG (g_message ("%s: thread ID %"G_GSIZE_FORMAT, __func__, tid));
200 mono_threads_lock ();
204 mono_g_hash_table_remove (threads, (gpointer)tid);
206 mono_threads_unlock ();
208 /* Don't close the handle here, wait for the object finalizer
209 * to do it. Otherwise, the following race condition applies:
211 * 1) Thread exits (and handle_remove() closes the handle)
213 * 2) Some other handle is reassigned the same slot
215 * 3) Another thread tries to join the first thread, and
216 * blocks waiting for the reassigned handle to be signalled
217 * (which might never happen). This is possible, because the
218 * thread calling Join() still has a reference to the first
223 static void thread_cleanup (MonoThread *thread)
225 g_assert (thread != NULL);
227 mono_release_type_locks (thread);
229 if (!mono_monitor_enter (thread->synch_lock))
232 thread->state |= ThreadState_Stopped;
233 mono_monitor_exit (thread->synch_lock);
235 mono_profiler_thread_end (thread->tid);
236 handle_remove (thread->tid);
238 mono_thread_pop_appdomain_ref ();
240 if (thread->serialized_culture_info)
241 g_free (thread->serialized_culture_info);
243 thread->cached_culture_info = NULL;
245 if (mono_thread_cleanup_fn)
246 mono_thread_cleanup_fn (thread);
249 static guint32 WINAPI start_wrapper(void *data)
251 struct StartInfo *start_info=(struct StartInfo *)data;
252 guint32 (*start_func)(void *);
255 MonoThread *thread=start_info->obj;
256 MonoObject *start_delegate = start_info->delegate;
258 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper", __func__, GetCurrentThreadId ()));
260 /* We can be sure start_info->obj->tid and
261 * start_info->obj->handle have been set, because the thread
262 * was created suspended, and these values were set before the
268 SET_CURRENT_OBJECT (thread);
270 if (!mono_domain_set (start_info->domain, FALSE)) {
271 /* No point in raising an appdomain_unloaded exception here */
272 /* FIXME: Cleanup here */
276 start_func = start_info->func;
277 start_arg = start_info->start_arg;
279 /* This MUST be called before any managed code can be
280 * executed, as it calls the callback function that (for the
281 * jit) sets the lmf marker.
283 mono_thread_new_init (tid, &tid, start_func);
284 thread->stack_ptr = &tid;
286 LIBGC_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT",%d) Setting thread stack to %p", __func__, GetCurrentThreadId (), getpid (), thread->stack_ptr));
288 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Setting current_object_key to %p", __func__, GetCurrentThreadId (), thread));
290 mono_profiler_thread_start (tid);
292 if(thread->start_notify!=NULL) {
293 /* Let the thread that called Start() know we're
296 ReleaseSemaphore (thread->start_notify, 1, NULL);
301 /* Every thread references the appdomain which created it */
302 mono_thread_push_appdomain_ref (mono_domain_get ());
304 thread_adjust_static_data (thread);
306 g_message ("%s: start_wrapper for %"G_GSIZE_FORMAT, __func__,
310 /* start_func is set only for unmanaged start functions */
312 start_func (start_arg);
315 g_assert (start_delegate != NULL);
316 args [0] = start_arg;
317 /* we may want to handle the exception here. See comment below on unhandled exceptions */
318 mono_runtime_delegate_invoke (start_delegate, args, NULL);
321 /* If the thread calls ExitThread at all, this remaining code
322 * will not be executed, but the main thread will eventually
323 * call thread_cleanup() on this thread's behalf.
326 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper terminating", __func__, GetCurrentThreadId ()));
328 thread_cleanup (thread);
330 /* Remove the reference to the thread object in the TLS data,
331 * so the thread object can be finalized. This won't be
332 * reached if the thread threw an uncaught exception, so those
333 * thread handles will stay referenced :-( (This is due to
334 * missing support for scanning thread-specific data in the
335 * Boehm GC - the io-layer keeps a GC-visible hash of pointers
338 SET_CURRENT_OBJECT (NULL);
343 void mono_thread_new_init (gsize tid, gpointer stack_start, gpointer func)
345 if (mono_thread_start_cb) {
346 mono_thread_start_cb (tid, stack_start, func);
350 void mono_threads_set_default_stacksize (guint32 stacksize)
352 default_stacksize = stacksize;
355 guint32 mono_threads_get_default_stacksize (void)
357 return default_stacksize;
360 void mono_thread_create (MonoDomain *domain, gpointer func, gpointer arg)
363 HANDLE thread_handle;
364 struct StartInfo *start_info;
367 thread=(MonoThread *)mono_object_new (domain,
368 mono_defaults.thread_class);
370 start_info=g_new0 (struct StartInfo, 1);
371 start_info->func = func;
372 start_info->obj = thread;
373 start_info->domain = domain;
374 start_info->start_arg = arg;
376 /* Create suspended, so we can do some housekeeping before the thread
379 thread_handle = CreateThread(NULL, default_stacksize_for_thread (thread), (LPTHREAD_START_ROUTINE)start_wrapper, start_info,
380 CREATE_SUSPENDED, &tid);
381 THREAD_DEBUG (g_message ("%s: Started thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread_handle));
382 if (thread_handle == NULL) {
383 /* The thread couldn't be created, so throw an exception */
384 mono_raise_exception (mono_get_exception_execution_engine ("Couldn't create thread"));
388 thread->handle=thread_handle;
391 MONO_OBJECT_SETREF (thread, synch_lock, mono_object_new (domain, mono_defaults.object_class));
393 handle_store(thread);
395 ResumeThread (thread_handle);
399 mono_thread_attach (MonoDomain *domain)
402 HANDLE thread_handle;
405 if ((thread = mono_thread_current ())) {
406 if (domain != mono_domain_get ())
407 mono_domain_set (domain, TRUE);
408 /* Already attached */
412 if (!mono_gc_register_thread (&domain)) {
413 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.", GetCurrentThreadId ());
416 thread = (MonoThread *)mono_object_new (domain,
417 mono_defaults.thread_class);
419 thread_handle = GetCurrentThread ();
420 g_assert (thread_handle);
422 tid=GetCurrentThreadId ();
425 * The handle returned by GetCurrentThread () is a pseudo handle, so it can't be used to
426 * refer to the thread from other threads for things like aborting.
428 DuplicateHandle (GetCurrentProcess (), thread_handle, GetCurrentProcess (), &thread_handle,
429 THREAD_ALL_ACCESS, TRUE, 0);
431 thread->handle=thread_handle;
433 thread->stack_ptr = &tid;
434 MONO_OBJECT_SETREF (thread, synch_lock, mono_object_new (domain, mono_defaults.object_class));
436 THREAD_DEBUG (g_message ("%s: Attached thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread_handle));
438 handle_store(thread);
440 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Setting current_object_key to %p", __func__, GetCurrentThreadId (), thread));
442 SET_CURRENT_OBJECT (thread);
443 mono_domain_set (domain, TRUE);
445 thread_adjust_static_data (thread);
447 if (mono_thread_attach_cb) {
448 mono_thread_attach_cb (tid, &tid);
455 mono_thread_detach (MonoThread *thread)
457 g_return_if_fail (thread != NULL);
459 THREAD_DEBUG (g_message ("%s: mono_thread_detach for %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
461 thread_cleanup (thread);
463 SET_CURRENT_OBJECT (NULL);
465 /* Don't need to CloseHandle this thread, even though we took a
466 * reference in mono_thread_attach (), because the GC will do it
467 * when the Thread object is finalised.
474 MonoThread *thread = mono_thread_current ();
476 thread_cleanup (thread);
477 SET_CURRENT_OBJECT (NULL);
479 /* we could add a callback here for embedders to use. */
480 if (thread == mono_thread_get_main ())
481 exit (mono_environment_exitcode_get ());
485 HANDLE ves_icall_System_Threading_Thread_Thread_internal(MonoThread *this,
488 guint32 (*start_func)(void *);
489 struct StartInfo *start_info;
495 THREAD_DEBUG (g_message("%s: Trying to start a new thread: this (%p) start (%p)", __func__, this, start));
497 mono_monitor_enter (this->synch_lock);
499 if ((this->state & ThreadState_Unstarted) == 0) {
500 mono_monitor_exit (this->synch_lock);
501 mono_raise_exception (mono_get_exception_thread_state ("Thread has already been started."));
505 if ((this->state & ThreadState_Aborted) != 0) {
506 mono_monitor_exit (this->synch_lock);
511 /* This is freed in start_wrapper */
512 start_info = g_new0 (struct StartInfo, 1);
513 start_info->func = start_func;
514 start_info->start_arg = this->start_obj; /* FIXME: GC object stored in unmanaged memory */
515 start_info->delegate = start;
516 start_info->obj = this;
517 start_info->domain = mono_domain_get ();
519 this->start_notify=CreateSemaphore (NULL, 0, 0x7fffffff, NULL);
520 if(this->start_notify==NULL) {
521 mono_monitor_exit (this->synch_lock);
522 g_warning ("%s: CreateSemaphore error 0x%x", __func__, GetLastError ());
526 thread=CreateThread(NULL, default_stacksize_for_thread (this), (LPTHREAD_START_ROUTINE)start_wrapper, start_info,
527 CREATE_SUSPENDED, &tid);
529 mono_monitor_exit (this->synch_lock);
530 g_warning("%s: CreateThread error 0x%x", __func__, GetLastError());
537 /* Don't call handle_store() here, delay it to Start.
538 * We can't join a thread (trying to will just block
539 * forever) until it actually starts running, so don't
540 * store the handle till then.
543 mono_thread_start (this);
545 this->state &= ~ThreadState_Unstarted;
547 THREAD_DEBUG (g_message ("%s: Started thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread));
549 mono_monitor_exit (this->synch_lock);
554 void ves_icall_System_Threading_Thread_Thread_free_internal (MonoThread *this,
559 THREAD_DEBUG (g_message ("%s: Closing thread %p, handle %p", __func__, this, thread));
561 CloseHandle (thread);
564 static void mono_thread_start (MonoThread *thread)
568 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Launching thread %p (%"G_GSIZE_FORMAT")", __func__, GetCurrentThreadId (), thread, (gsize)thread->tid));
570 /* Only store the handle when the thread is about to be
571 * launched, to avoid the main thread deadlocking while trying
572 * to clean up a thread that will never be signalled.
574 handle_store (thread);
576 ResumeThread (thread->handle);
578 if(thread->start_notify!=NULL) {
579 /* Wait for the thread to set up its TLS data etc, so
580 * theres no potential race condition if someone tries
581 * to look up the data believing the thread has
585 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") waiting for thread %p (%"G_GSIZE_FORMAT") to start", __func__, GetCurrentThreadId (), thread, (gsize)thread->tid));
587 WaitForSingleObjectEx (thread->start_notify, INFINITE, FALSE);
588 CloseHandle (thread->start_notify);
589 thread->start_notify = NULL;
592 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Done launching thread %p (%"G_GSIZE_FORMAT")", __func__, GetCurrentThreadId (), thread, (gsize)thread->tid));
595 void ves_icall_System_Threading_Thread_Sleep_internal(gint32 ms)
597 MonoThread *thread = mono_thread_current ();
601 THREAD_DEBUG (g_message ("%s: Sleeping for %d ms", __func__, ms));
603 mono_monitor_enter (thread->synch_lock);
604 thread->state |= ThreadState_WaitSleepJoin;
605 mono_monitor_exit (thread->synch_lock);
609 mono_monitor_enter (thread->synch_lock);
610 thread->state &= ~ThreadState_WaitSleepJoin;
611 mono_monitor_exit (thread->synch_lock);
615 ves_icall_System_Threading_Thread_GetDomainID (void)
619 return mono_domain_get()->domain_id;
623 ves_icall_System_Threading_Thread_GetName_internal (MonoThread *this_obj)
626 mono_monitor_enter (this_obj->synch_lock);
631 str = mono_string_new_utf16 (mono_domain_get (), this_obj->name, this_obj->name_len);
633 mono_monitor_exit (this_obj->synch_lock);
638 ves_icall_System_Threading_Thread_SetName_internal (MonoThread *this_obj, MonoString *name)
640 mono_monitor_enter (this_obj->synch_lock);
642 if (this_obj->name) {
643 mono_monitor_exit (this_obj->synch_lock);
644 mono_raise_exception (mono_get_exception_invalid_operation ("Thread.Name can only be set once."));
648 this_obj->name = g_new (gunichar2, mono_string_length (name));
649 memcpy (this_obj->name, mono_string_chars (name), mono_string_length (name) * 2);
650 this_obj->name_len = mono_string_length (name);
653 this_obj->name = NULL;
655 mono_monitor_exit (this_obj->synch_lock);
659 lookup_cached_culture (MonoThread *this, MonoDomain *domain, int start_idx)
664 if (this->cached_culture_info) {
665 domain = mono_domain_get ();
666 for (i = start_idx; i < start_idx + NUM_CACHED_CULTURES; ++i) {
667 res = mono_array_get (this->cached_culture_info, MonoObject*, i);
668 if (res && res->vtable->domain == domain)
677 ves_icall_System_Threading_Thread_GetCachedCurrentCulture (MonoThread *this)
679 return lookup_cached_culture (this, mono_domain_get (), CULTURES_START_IDX);
683 ves_icall_System_Threading_Thread_GetSerializedCurrentCulture (MonoThread *this)
687 mono_monitor_enter (this->synch_lock);
688 if (this->serialized_culture_info) {
689 res = mono_array_new (mono_domain_get (), mono_defaults.byte_class, this->serialized_culture_info_len);
690 memcpy (mono_array_addr (res, guint8, 0), this->serialized_culture_info, this->serialized_culture_info_len);
694 mono_monitor_exit (this->synch_lock);
700 cache_culture (MonoThread *this, MonoObject *culture, int start_idx)
703 MonoDomain *domain = mono_domain_get ();
706 int same_domain_slot = -1;
708 mono_monitor_enter (this->synch_lock);
709 if (!this->cached_culture_info)
710 this->cached_culture_info = mono_array_new (mono_object_domain (this), mono_defaults.object_class, NUM_CACHED_CULTURES * 2);
712 for (i = start_idx; i < start_idx + NUM_CACHED_CULTURES; ++i) {
713 obj = mono_array_get (this->cached_culture_info, MonoObject*, i);
717 /* we continue, because there may be a slot used with the same domain */
721 if (obj->vtable->domain == domain) {
722 same_domain_slot = i;
726 if (same_domain_slot >= 0)
727 mono_array_setref (this->cached_culture_info, same_domain_slot, culture);
728 else if (free_slot >= 0)
729 mono_array_setref (this->cached_culture_info, free_slot, culture);
730 /* we may want to replace an existing entry here, even when no suitable slot is found */
731 mono_monitor_exit (this->synch_lock);
735 ves_icall_System_Threading_Thread_SetCachedCurrentCulture (MonoThread *this, MonoObject *culture)
737 cache_culture (this, culture, CULTURES_START_IDX);
741 ves_icall_System_Threading_Thread_SetSerializedCurrentCulture (MonoThread *this, MonoArray *arr)
743 mono_monitor_enter (this->synch_lock);
744 if (this->serialized_culture_info)
745 g_free (this->serialized_culture_info);
746 this->serialized_culture_info = g_new0 (guint8, mono_array_length (arr));
747 this->serialized_culture_info_len = mono_array_length (arr);
748 memcpy (this->serialized_culture_info, mono_array_addr (arr, guint8, 0), mono_array_length (arr));
749 mono_monitor_exit (this->synch_lock);
754 ves_icall_System_Threading_Thread_GetCachedCurrentUICulture (MonoThread *this)
756 return lookup_cached_culture (this, mono_domain_get (), UICULTURES_START_IDX);
760 ves_icall_System_Threading_Thread_GetSerializedCurrentUICulture (MonoThread *this)
764 mono_monitor_enter (this->synch_lock);
765 if (this->serialized_ui_culture_info) {
766 res = mono_array_new (mono_domain_get (), mono_defaults.byte_class, this->serialized_ui_culture_info_len);
767 memcpy (mono_array_addr (res, guint8, 0), this->serialized_ui_culture_info, this->serialized_ui_culture_info_len);
771 mono_monitor_exit (this->synch_lock);
777 ves_icall_System_Threading_Thread_SetCachedCurrentUICulture (MonoThread *this, MonoObject *culture)
779 cache_culture (this, culture, UICULTURES_START_IDX);
783 ves_icall_System_Threading_Thread_SetSerializedCurrentUICulture (MonoThread *this, MonoArray *arr)
785 mono_monitor_enter (this->synch_lock);
786 if (this->serialized_ui_culture_info)
787 g_free (this->serialized_ui_culture_info);
788 this->serialized_ui_culture_info = g_new0 (guint8, mono_array_length (arr));
789 this->serialized_ui_culture_info_len = mono_array_length (arr);
790 memcpy (this->serialized_ui_culture_info, mono_array_addr (arr, guint8, 0), mono_array_length (arr));
791 mono_monitor_exit (this->synch_lock);
794 /* the jit may read the compiled code of this function */
796 mono_thread_current (void)
798 THREAD_DEBUG (g_message ("%s: returning %p", __func__, GET_CURRENT_OBJECT ()));
799 return GET_CURRENT_OBJECT ();
802 gboolean ves_icall_System_Threading_Thread_Join_internal(MonoThread *this,
803 int ms, HANDLE thread)
809 mono_monitor_enter (this->synch_lock);
811 if ((this->state & ThreadState_Unstarted) != 0) {
812 mono_monitor_exit (this->synch_lock);
813 mono_raise_exception (mono_get_exception_thread_state ("Thread has not been started."));
817 this->state |= ThreadState_WaitSleepJoin;
818 mono_monitor_exit (this->synch_lock);
823 THREAD_DEBUG (g_message ("%s: joining thread handle %p, %d ms", __func__, thread, ms));
825 ret=WaitForSingleObjectEx (thread, ms, TRUE);
827 mono_monitor_enter (this->synch_lock);
828 this->state &= ~ThreadState_WaitSleepJoin;
829 mono_monitor_exit (this->synch_lock);
831 if(ret==WAIT_OBJECT_0) {
832 THREAD_DEBUG (g_message ("%s: join successful", __func__));
837 THREAD_DEBUG (g_message ("%s: join failed", __func__));
842 /* FIXME: exitContext isnt documented */
843 gboolean ves_icall_System_Threading_WaitHandle_WaitAll_internal(MonoArray *mono_handles, gint32 ms, gboolean exitContext)
849 MonoObject *waitHandle;
851 MonoThread *thread = mono_thread_current ();
855 numhandles = mono_array_length(mono_handles);
856 handles = g_new0(HANDLE, numhandles);
858 if (wait_handle_os_handle_field == 0) {
859 /* Get the field os_handle which will contain the actual handle */
860 klass = mono_class_from_name(mono_defaults.corlib, "System.Threading", "WaitHandle");
861 wait_handle_os_handle_field = mono_class_get_field_from_name(klass, "os_handle");
864 for(i = 0; i < numhandles; i++) {
865 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
866 mono_field_get_value(waitHandle, wait_handle_os_handle_field, &handles[i]);
873 mono_monitor_enter (thread->synch_lock);
874 thread->state |= ThreadState_WaitSleepJoin;
875 mono_monitor_exit (thread->synch_lock);
877 ret=WaitForMultipleObjectsEx(numhandles, handles, TRUE, ms, TRUE);
879 mono_monitor_enter (thread->synch_lock);
880 thread->state &= ~ThreadState_WaitSleepJoin;
881 mono_monitor_exit (thread->synch_lock);
885 if(ret==WAIT_FAILED) {
886 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Wait failed", __func__, GetCurrentThreadId ()));
888 } else if(ret==WAIT_TIMEOUT || ret == WAIT_IO_COMPLETION) {
889 /* Do we want to try again if we get
890 * WAIT_IO_COMPLETION? The documentation for
891 * WaitHandle doesn't give any clues. (We'd have to
892 * fiddle with the timeout if we retry.)
894 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Wait timed out", __func__, GetCurrentThreadId ()));
901 /* FIXME: exitContext isnt documented */
902 gint32 ves_icall_System_Threading_WaitHandle_WaitAny_internal(MonoArray *mono_handles, gint32 ms, gboolean exitContext)
908 MonoObject *waitHandle;
910 MonoThread *thread = mono_thread_current ();
914 numhandles = mono_array_length(mono_handles);
915 handles = g_new0(HANDLE, numhandles);
917 if (wait_handle_os_handle_field == 0) {
918 /* Get the field os_handle which will contain the actual handle */
919 klass = mono_class_from_name(mono_defaults.corlib, "System.Threading", "WaitHandle");
920 wait_handle_os_handle_field = mono_class_get_field_from_name(klass, "os_handle");
923 for(i = 0; i < numhandles; i++) {
924 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
925 mono_field_get_value(waitHandle, wait_handle_os_handle_field, &handles[i]);
932 mono_monitor_enter (thread->synch_lock);
933 thread->state |= ThreadState_WaitSleepJoin;
934 mono_monitor_exit (thread->synch_lock);
936 ret=WaitForMultipleObjectsEx(numhandles, handles, FALSE, ms, TRUE);
938 mono_monitor_enter (thread->synch_lock);
939 thread->state &= ~ThreadState_WaitSleepJoin;
940 mono_monitor_exit (thread->synch_lock);
944 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") returning %d", __func__, GetCurrentThreadId (), ret));
947 * These need to be here. See MSDN dos on WaitForMultipleObjects.
949 if (ret >= WAIT_OBJECT_0 && ret <= WAIT_OBJECT_0 + numhandles - 1) {
950 return ret - WAIT_OBJECT_0;
952 else if (ret >= WAIT_ABANDONED_0 && ret <= WAIT_ABANDONED_0 + numhandles - 1) {
953 return ret - WAIT_ABANDONED_0;
960 /* FIXME: exitContext isnt documented */
961 gboolean ves_icall_System_Threading_WaitHandle_WaitOne_internal(MonoObject *this, HANDLE handle, gint32 ms, gboolean exitContext)
964 MonoThread *thread = mono_thread_current ();
968 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") waiting for %p, %d ms", __func__, GetCurrentThreadId (), handle, ms));
974 mono_monitor_enter (thread->synch_lock);
975 thread->state |= ThreadState_WaitSleepJoin;
976 mono_monitor_exit (thread->synch_lock);
978 ret=WaitForSingleObjectEx (handle, ms, TRUE);
980 mono_monitor_enter (thread->synch_lock);
981 thread->state &= ~ThreadState_WaitSleepJoin;
982 mono_monitor_exit (thread->synch_lock);
984 if(ret==WAIT_FAILED) {
985 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Wait failed", __func__, GetCurrentThreadId ()));
987 } else if(ret==WAIT_TIMEOUT || ret == WAIT_IO_COMPLETION) {
988 /* Do we want to try again if we get
989 * WAIT_IO_COMPLETION? The documentation for
990 * WaitHandle doesn't give any clues. (We'd have to
991 * fiddle with the timeout if we retry.)
993 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Wait timed out", __func__, GetCurrentThreadId ()));
1000 HANDLE ves_icall_System_Threading_Mutex_CreateMutex_internal (MonoBoolean owned, MonoString *name, MonoBoolean *created)
1004 MONO_ARCH_SAVE_REGS;
1009 mutex = CreateMutex (NULL, owned, NULL);
1011 mutex = CreateMutex (NULL, owned, mono_string_chars (name));
1013 if (GetLastError () == ERROR_ALREADY_EXISTS) {
1021 void ves_icall_System_Threading_Mutex_ReleaseMutex_internal (HANDLE handle ) {
1022 MONO_ARCH_SAVE_REGS;
1024 ReleaseMutex(handle);
1027 HANDLE ves_icall_System_Threading_Mutex_OpenMutex_internal (MonoString *name,
1033 MONO_ARCH_SAVE_REGS;
1035 *error = ERROR_SUCCESS;
1037 ret = OpenMutex (rights, FALSE, mono_string_chars (name));
1039 *error = GetLastError ();
1046 HANDLE ves_icall_System_Threading_Semaphore_CreateSemaphore_internal (gint32 initialCount, gint32 maximumCount, MonoString *name, MonoBoolean *created)
1050 MONO_ARCH_SAVE_REGS;
1055 sem = CreateSemaphore (NULL, initialCount, maximumCount, NULL);
1057 sem = CreateSemaphore (NULL, initialCount, maximumCount,
1058 mono_string_chars (name));
1060 if (GetLastError () == ERROR_ALREADY_EXISTS) {
1068 gint32 ves_icall_System_Threading_Semaphore_ReleaseSemaphore_internal (HANDLE handle, gint32 releaseCount, MonoBoolean *fail)
1072 MONO_ARCH_SAVE_REGS;
1074 *fail = !ReleaseSemaphore (handle, releaseCount, &prevcount);
1079 HANDLE ves_icall_System_Threading_Semaphore_OpenSemaphore_internal (MonoString *name, gint32 rights, gint32 *error)
1083 MONO_ARCH_SAVE_REGS;
1085 *error = ERROR_SUCCESS;
1087 ret = OpenSemaphore (rights, FALSE, mono_string_chars (name));
1089 *error = GetLastError ();
1095 HANDLE ves_icall_System_Threading_Events_CreateEvent_internal (MonoBoolean manual, MonoBoolean initial, MonoString *name, MonoBoolean *created)
1099 MONO_ARCH_SAVE_REGS;
1104 event = CreateEvent (NULL, manual, initial, NULL);
1106 event = CreateEvent (NULL, manual, initial,
1107 mono_string_chars (name));
1109 if (GetLastError () == ERROR_ALREADY_EXISTS) {
1117 gboolean ves_icall_System_Threading_Events_SetEvent_internal (HANDLE handle) {
1118 MONO_ARCH_SAVE_REGS;
1120 return (SetEvent(handle));
1123 gboolean ves_icall_System_Threading_Events_ResetEvent_internal (HANDLE handle) {
1124 MONO_ARCH_SAVE_REGS;
1126 return (ResetEvent(handle));
1130 ves_icall_System_Threading_Events_CloseEvent_internal (HANDLE handle) {
1131 MONO_ARCH_SAVE_REGS;
1133 CloseHandle (handle);
1136 HANDLE ves_icall_System_Threading_Events_OpenEvent_internal (MonoString *name,
1142 MONO_ARCH_SAVE_REGS;
1144 *error = ERROR_SUCCESS;
1146 ret = OpenEvent (rights, FALSE, mono_string_chars (name));
1148 *error = GetLastError ();
1154 gint32 ves_icall_System_Threading_Interlocked_Increment_Int (gint32 *location)
1156 MONO_ARCH_SAVE_REGS;
1158 return InterlockedIncrement (location);
1161 gint64 ves_icall_System_Threading_Interlocked_Increment_Long (gint64 *location)
1165 MONO_ARCH_SAVE_REGS;
1167 mono_interlocked_lock ();
1171 mono_interlocked_unlock ();
1177 gint32 ves_icall_System_Threading_Interlocked_Decrement_Int (gint32 *location)
1179 MONO_ARCH_SAVE_REGS;
1181 return InterlockedDecrement(location);
1184 gint64 ves_icall_System_Threading_Interlocked_Decrement_Long (gint64 * location)
1188 MONO_ARCH_SAVE_REGS;
1190 mono_interlocked_lock ();
1194 mono_interlocked_unlock ();
1199 gint32 ves_icall_System_Threading_Interlocked_Exchange_Int (gint32 *location, gint32 value)
1201 MONO_ARCH_SAVE_REGS;
1203 return InterlockedExchange(location, value);
1206 MonoObject * ves_icall_System_Threading_Interlocked_Exchange_Object (MonoObject **location, MonoObject *value)
1208 MONO_ARCH_SAVE_REGS;
1210 return (MonoObject *) InterlockedExchangePointer((gpointer *) location, value);
1213 gfloat ves_icall_System_Threading_Interlocked_Exchange_Single (gfloat *location, gfloat value)
1215 IntFloatUnion val, ret;
1217 MONO_ARCH_SAVE_REGS;
1220 ret.ival = InterlockedExchange((gint32 *) location, val.ival);
1226 ves_icall_System_Threading_Interlocked_Exchange_Long (gint64 *location, gint64 value)
1228 #if SIZEOF_VOID_P == 8
1229 return (gint64) InterlockedExchangePointer((gpointer *) location, (gpointer)value);
1234 * According to MSDN, this function is only atomic with regards to the
1235 * other Interlocked functions on 32 bit platforms.
1237 mono_interlocked_lock ();
1240 mono_interlocked_unlock ();
1247 ves_icall_System_Threading_Interlocked_Exchange_Double (gdouble *location, gdouble value)
1249 #if SIZEOF_VOID_P == 8
1250 LongDoubleUnion val, ret;
1253 ret.ival = (gint64)InterlockedExchangePointer((gpointer *) location, (gpointer)val.ival);
1260 * According to MSDN, this function is only atomic with regards to the
1261 * other Interlocked functions on 32 bit platforms.
1263 mono_interlocked_lock ();
1266 mono_interlocked_unlock ();
1272 gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int(gint32 *location, gint32 value, gint32 comparand)
1274 MONO_ARCH_SAVE_REGS;
1276 return InterlockedCompareExchange(location, value, comparand);
1279 MonoObject * ves_icall_System_Threading_Interlocked_CompareExchange_Object (MonoObject **location, MonoObject *value, MonoObject *comparand)
1281 MONO_ARCH_SAVE_REGS;
1283 return (MonoObject *) InterlockedCompareExchangePointer((gpointer *) location, value, comparand);
1286 gfloat ves_icall_System_Threading_Interlocked_CompareExchange_Single (gfloat *location, gfloat value, gfloat comparand)
1288 IntFloatUnion val, ret, cmp;
1290 MONO_ARCH_SAVE_REGS;
1293 cmp.fval = comparand;
1294 ret.ival = InterlockedCompareExchange((gint32 *) location, val.ival, cmp.ival);
1300 ves_icall_System_Threading_Interlocked_CompareExchange_Double (gdouble *location, gdouble value, gdouble comparand)
1302 #if SIZEOF_VOID_P == 8
1303 LongDoubleUnion val, comp, ret;
1306 comp.fval = comparand;
1307 ret.ival = (gint64)InterlockedCompareExchangePointer((gpointer *) location, (gpointer)val.ival, (gpointer)comp.ival);
1313 mono_interlocked_lock ();
1315 if (old == comparand)
1317 mono_interlocked_unlock ();
1324 ves_icall_System_Threading_Interlocked_CompareExchange_Long (gint64 *location, gint64 value, gint64 comparand)
1326 #if SIZEOF_VOID_P == 8
1327 return (gint64)InterlockedCompareExchangePointer((gpointer *) location, (gpointer)value, (gpointer)comparand);
1331 mono_interlocked_lock ();
1333 if (old == comparand)
1335 mono_interlocked_unlock ();
1342 ves_icall_System_Threading_Interlocked_CompareExchange_T (MonoObject **location, MonoObject *value, MonoObject *comparand)
1344 MONO_ARCH_SAVE_REGS;
1346 return InterlockedCompareExchangePointer ((gpointer *)location, value, comparand);
1350 ves_icall_System_Threading_Interlocked_Exchange_T (MonoObject **location, MonoObject *value)
1352 MONO_ARCH_SAVE_REGS;
1354 return InterlockedExchangePointer ((gpointer *)location, value);
1358 ves_icall_System_Threading_Interlocked_Add_Int (gint32 *location, gint32 value)
1360 #if SIZEOF_VOID_P == 8
1361 /* Should be implemented as a JIT intrinsic */
1362 mono_raise_exception (mono_get_exception_not_implemented (NULL));
1367 mono_interlocked_lock ();
1369 *location = orig + value;
1370 mono_interlocked_unlock ();
1372 return orig + value;
1377 ves_icall_System_Threading_Interlocked_Add_Long (gint64 *location, gint64 value)
1379 #if SIZEOF_VOID_P == 8
1380 /* Should be implemented as a JIT intrinsic */
1381 mono_raise_exception (mono_get_exception_not_implemented (NULL));
1386 mono_interlocked_lock ();
1388 *location = orig + value;
1389 mono_interlocked_unlock ();
1391 return orig + value;
1396 ves_icall_System_Threading_Interlocked_Read_Long (gint64 *location)
1398 #if SIZEOF_VOID_P == 8
1399 /* 64 bit reads are already atomic */
1404 mono_interlocked_lock ();
1406 mono_interlocked_unlock ();
1413 ves_icall_System_Threading_Thread_MemoryBarrier (void)
1415 /* Should be implemented as a JIT intrinsic */
1416 mono_raise_exception (mono_get_exception_not_implemented (NULL));
1420 ves_icall_System_Threading_Thread_ClrState (MonoThread* this, guint32 state)
1422 mono_monitor_enter (this->synch_lock);
1423 this->state &= ~state;
1424 if (state & ThreadState_Background) {
1425 /* If the thread changes the background mode, the main thread has to
1426 * be notified, since it has to rebuild the list of threads to
1429 SetEvent (background_change_event);
1431 mono_monitor_exit (this->synch_lock);
1435 ves_icall_System_Threading_Thread_SetState (MonoThread* this, guint32 state)
1437 mono_monitor_enter (this->synch_lock);
1438 this->state |= state;
1439 if (state & ThreadState_Background) {
1440 /* If the thread changes the background mode, the main thread has to
1441 * be notified, since it has to rebuild the list of threads to
1444 SetEvent (background_change_event);
1446 mono_monitor_exit (this->synch_lock);
1450 ves_icall_System_Threading_Thread_GetState (MonoThread* this)
1453 mono_monitor_enter (this->synch_lock);
1454 state = this->state;
1455 mono_monitor_exit (this->synch_lock);
1460 mono_thread_get_abort_signal (void)
1462 #if defined (__MINGW32__) || defined (_MSC_VER)
1468 static int abort_signum = -1;
1470 if (abort_signum != -1)
1471 return abort_signum;
1472 /* we try to avoid SIGRTMIN and any one that might have been set already, see bug #75387 */
1473 for (i = SIGRTMIN + 1; i < SIGRTMAX; ++i) {
1474 struct sigaction sinfo;
1475 sigaction (i, NULL, &sinfo);
1476 if (sinfo.sa_handler == SIG_DFL && (void*)sinfo.sa_sigaction == (void*)SIG_DFL) {
1481 /* fallback to the old way */
1484 #endif /*defined (__MINGW32__) || defined (_MSC_VER) */
1487 #if defined (__MINGW32__) || defined (_MSC_VER)
1488 static void CALLBACK interruption_request_apc (ULONG_PTR param)
1490 MonoException* exc = mono_thread_request_interruption (FALSE);
1491 if (exc) mono_raise_exception (exc);
1493 #endif /* defined (__MINGW32__) || defined (_MSC_VER) */
1496 * signal_thread_state_change
1498 * Tells the thread that his state has changed and it has to enter the new
1499 * state as soon as possible.
1501 static void signal_thread_state_change (MonoThread *thread)
1503 if (thread == mono_thread_current ()) {
1504 /* Do it synchronously */
1505 MonoException *exc = mono_thread_request_interruption (FALSE);
1507 mono_raise_exception (exc);
1510 #if defined (__MINGW32__) || defined (_MSC_VER)
1511 QueueUserAPC ((PAPCFUNC)interruption_request_apc, thread->handle, NULL);
1513 /* fixme: store the state somewhere */
1514 #ifdef PTHREAD_POINTER_ID
1515 pthread_kill ((gpointer)(gsize)(thread->tid), mono_thread_get_abort_signal ());
1517 pthread_kill (thread->tid, mono_thread_get_abort_signal ());
1519 #endif /* defined (__MINGW32__) || defined (__MSC_VER) */
1523 ves_icall_System_Threading_Thread_Abort (MonoThread *thread, MonoObject *state)
1525 MONO_ARCH_SAVE_REGS;
1527 mono_monitor_enter (thread->synch_lock);
1529 if ((thread->state & ThreadState_AbortRequested) != 0 ||
1530 (thread->state & ThreadState_StopRequested) != 0 ||
1531 (thread->state & ThreadState_Stopped) != 0)
1533 mono_monitor_exit (thread->synch_lock);
1537 if ((thread->state & ThreadState_Unstarted) != 0) {
1538 thread->state |= ThreadState_Aborted;
1539 mono_monitor_exit (thread->synch_lock);
1543 thread->state |= ThreadState_AbortRequested;
1544 MONO_OBJECT_SETREF (thread, abort_state, state);
1545 thread->abort_exc = NULL;
1547 mono_monitor_exit (thread->synch_lock);
1549 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Abort requested for %p (%"G_GSIZE_FORMAT")", __func__, GetCurrentThreadId (), thread, (gsize)thread->tid));
1551 /* Make sure the thread is awake */
1552 mono_thread_resume (thread);
1554 signal_thread_state_change (thread);
1558 ves_icall_System_Threading_Thread_ResetAbort (void)
1560 MonoThread *thread = mono_thread_current ();
1562 MONO_ARCH_SAVE_REGS;
1564 mono_monitor_enter (thread->synch_lock);
1566 thread->state &= ~ThreadState_AbortRequested;
1568 if (!thread->abort_exc) {
1569 const char *msg = "Unable to reset abort because no abort was requested";
1570 mono_monitor_exit (thread->synch_lock);
1571 mono_raise_exception (mono_get_exception_thread_state (msg));
1573 thread->abort_exc = NULL;
1574 thread->abort_state = NULL;
1577 mono_monitor_exit (thread->synch_lock);
1581 mono_thread_suspend (MonoThread *thread)
1583 MONO_ARCH_SAVE_REGS;
1585 mono_monitor_enter (thread->synch_lock);
1587 if ((thread->state & ThreadState_Unstarted) != 0 ||
1588 (thread->state & ThreadState_Aborted) != 0 ||
1589 (thread->state & ThreadState_Stopped) != 0)
1591 mono_monitor_exit (thread->synch_lock);
1595 if ((thread->state & ThreadState_Suspended) != 0 ||
1596 (thread->state & ThreadState_SuspendRequested) != 0 ||
1597 (thread->state & ThreadState_StopRequested) != 0)
1599 mono_monitor_exit (thread->synch_lock);
1603 thread->state |= ThreadState_SuspendRequested;
1604 mono_monitor_exit (thread->synch_lock);
1606 signal_thread_state_change (thread);
1611 ves_icall_System_Threading_Thread_Suspend (MonoThread *thread)
1613 if (!mono_thread_suspend (thread))
1614 mono_raise_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
1618 mono_thread_resume (MonoThread *thread)
1620 MONO_ARCH_SAVE_REGS;
1622 mono_monitor_enter (thread->synch_lock);
1624 if ((thread->state & ThreadState_SuspendRequested) != 0) {
1625 thread->state &= ~ThreadState_SuspendRequested;
1626 mono_monitor_exit (thread->synch_lock);
1630 if ((thread->state & ThreadState_Suspended) == 0 ||
1631 (thread->state & ThreadState_Unstarted) != 0 ||
1632 (thread->state & ThreadState_Aborted) != 0 ||
1633 (thread->state & ThreadState_Stopped) != 0)
1635 mono_monitor_exit (thread->synch_lock);
1639 thread->resume_event = CreateEvent (NULL, TRUE, FALSE, NULL);
1641 /* Awake the thread */
1642 SetEvent (thread->suspend_event);
1644 mono_monitor_exit (thread->synch_lock);
1646 /* Wait for the thread to awake */
1647 WaitForSingleObject (thread->resume_event, INFINITE);
1648 CloseHandle (thread->resume_event);
1649 thread->resume_event = NULL;
1655 ves_icall_System_Threading_Thread_Resume (MonoThread *thread)
1657 if (!mono_thread_resume (thread))
1658 mono_raise_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
1662 find_wrapper (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
1667 if (m->wrapper_type == MONO_WRAPPER_RUNTIME_INVOKE ||
1668 m->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE ||
1669 m->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH)
1671 *((gboolean*)data) = TRUE;
1678 is_running_protected_wrapper (void)
1680 gboolean found = FALSE;
1681 mono_stack_walk (find_wrapper, &found);
1685 void mono_thread_stop (MonoThread *thread)
1687 mono_monitor_enter (thread->synch_lock);
1689 if ((thread->state & ThreadState_StopRequested) != 0 ||
1690 (thread->state & ThreadState_Stopped) != 0)
1692 mono_monitor_exit (thread->synch_lock);
1696 /* Make sure the thread is awake */
1697 mono_thread_resume (thread);
1699 thread->state |= ThreadState_StopRequested;
1700 thread->state &= ~ThreadState_AbortRequested;
1702 mono_monitor_exit (thread->synch_lock);
1704 signal_thread_state_change (thread);
1708 ves_icall_System_Threading_Thread_VolatileRead1 (void *ptr)
1710 return *((volatile gint8 *) (ptr));
1714 ves_icall_System_Threading_Thread_VolatileRead2 (void *ptr)
1716 return *((volatile gint16 *) (ptr));
1720 ves_icall_System_Threading_Thread_VolatileRead4 (void *ptr)
1722 return *((volatile gint32 *) (ptr));
1726 ves_icall_System_Threading_Thread_VolatileRead8 (void *ptr)
1728 return *((volatile gint64 *) (ptr));
1732 ves_icall_System_Threading_Thread_VolatileReadIntPtr (void *ptr)
1734 return (void *) *((volatile void **) ptr);
1738 ves_icall_System_Threading_Thread_VolatileWrite1 (void *ptr, gint8 value)
1740 *((volatile gint8 *) ptr) = value;
1744 ves_icall_System_Threading_Thread_VolatileWrite2 (void *ptr, gint16 value)
1746 *((volatile gint16 *) ptr) = value;
1750 ves_icall_System_Threading_Thread_VolatileWrite4 (void *ptr, gint32 value)
1752 *((volatile gint32 *) ptr) = value;
1756 ves_icall_System_Threading_Thread_VolatileWrite8 (void *ptr, gint64 value)
1758 *((volatile gint64 *) ptr) = value;
1762 ves_icall_System_Threading_Thread_VolatileWriteIntPtr (void *ptr, void *value)
1764 *((volatile void **) ptr) = value;
1767 void mono_thread_init (MonoThreadStartCB start_cb,
1768 MonoThreadAttachCB attach_cb)
1770 InitializeCriticalSection(&threads_mutex);
1771 InitializeCriticalSection(&interlocked_mutex);
1772 InitializeCriticalSection(&contexts_mutex);
1773 background_change_event = CreateEvent (NULL, TRUE, FALSE, NULL);
1775 mono_init_static_data_info (&thread_static_info);
1776 mono_init_static_data_info (&context_static_info);
1778 current_object_key=TlsAlloc();
1779 THREAD_DEBUG (g_message ("%s: Allocated current_object_key %d", __func__, current_object_key));
1781 mono_thread_start_cb = start_cb;
1782 mono_thread_attach_cb = attach_cb;
1784 /* Get a pseudo handle to the current process. This is just a
1785 * kludge so that wapi can build a process handle if needed.
1786 * As a pseudo handle is returned, we don't need to clean
1789 GetCurrentProcess ();
1792 void mono_thread_cleanup (void)
1794 #if !defined(PLATFORM_WIN32) && !defined(RUN_IN_SUBTHREAD)
1795 /* The main thread must abandon any held mutexes (particularly
1796 * important for named mutexes as they are shared across
1797 * processes, see bug 74680.) This will happen when the
1798 * thread exits, but if it's not running in a subthread it
1799 * won't exit in time.
1801 /* Using non-w32 API is a nasty kludge, but I couldn't find
1802 * anything in the documentation that would let me do this
1803 * here yet still be safe to call on windows.
1805 _wapi_thread_signal_self (mono_environment_exitcode_get ());
1809 /* This stuff needs more testing, it seems one of these
1810 * critical sections can be locked when mono_thread_cleanup is
1813 DeleteCriticalSection (&threads_mutex);
1814 DeleteCriticalSection (&interlocked_mutex);
1815 DeleteCriticalSection (&contexts_mutex);
1816 CloseHandle (background_change_event);
1819 TlsFree (current_object_key);
1823 mono_threads_install_cleanup (MonoThreadCleanupFunc func)
1825 mono_thread_cleanup_fn = func;
1829 static void print_tids (gpointer key, gpointer value, gpointer user)
1831 /* GPOINTER_TO_UINT breaks horribly if sizeof(void *) >
1832 * sizeof(uint) and a cast to uint would overflow
1834 /* Older versions of glib don't have G_GSIZE_FORMAT, so just
1835 * print this as a pointer.
1837 g_message ("Waiting for: %p", key);
1842 HANDLE handles[MAXIMUM_WAIT_OBJECTS];
1843 MonoThread *threads[MAXIMUM_WAIT_OBJECTS];
1847 static void wait_for_tids (struct wait_data *wait, guint32 timeout)
1851 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
1853 ret=WaitForMultipleObjectsEx(wait->num, wait->handles, TRUE, timeout, FALSE);
1855 if(ret==WAIT_FAILED) {
1856 /* See the comment in build_wait_tids() */
1857 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
1861 for(i=0; i<wait->num; i++)
1862 CloseHandle (wait->handles[i]);
1864 if (ret == WAIT_TIMEOUT)
1867 for(i=0; i<wait->num; i++) {
1868 gsize tid = wait->threads[i]->tid;
1870 if(mono_g_hash_table_lookup (threads, (gpointer)tid)!=NULL) {
1871 /* This thread must have been killed, because
1872 * it hasn't cleaned itself up. (It's just
1873 * possible that the thread exited before the
1874 * parent thread had a chance to store the
1875 * handle, and now there is another pointer to
1876 * the already-exited thread stored. In this
1877 * case, we'll just get two
1878 * mono_profiler_thread_end() calls for the
1882 THREAD_DEBUG (g_message ("%s: cleaning up after thread %"G_GSIZE_FORMAT, __func__, tid));
1883 thread_cleanup (wait->threads[i]);
1888 static void wait_for_tids_or_state_change (struct wait_data *wait, guint32 timeout)
1890 guint32 i, ret, count;
1892 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
1894 /* Add the thread state change event, so it wakes up if a thread changes
1895 * to background mode.
1898 if (count < MAXIMUM_WAIT_OBJECTS) {
1899 wait->handles [count] = background_change_event;
1903 ret=WaitForMultipleObjectsEx (count, wait->handles, FALSE, timeout, FALSE);
1905 if(ret==WAIT_FAILED) {
1906 /* See the comment in build_wait_tids() */
1907 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
1911 for(i=0; i<wait->num; i++)
1912 CloseHandle (wait->handles[i]);
1914 if (ret == WAIT_TIMEOUT)
1917 if (ret < wait->num) {
1918 gsize tid = wait->threads[ret]->tid;
1919 mono_threads_lock ();
1920 if (mono_g_hash_table_lookup (threads, (gpointer)tid)!=NULL) {
1921 /* See comment in wait_for_tids about thread cleanup */
1922 mono_threads_unlock ();
1923 THREAD_DEBUG (g_message ("%s: cleaning up after thread %"G_GSIZE_FORMAT, __func__, tid));
1924 thread_cleanup (wait->threads [ret]);
1926 mono_threads_unlock ();
1930 static void build_wait_tids (gpointer key, gpointer value, gpointer user)
1932 struct wait_data *wait=(struct wait_data *)user;
1934 if(wait->num<MAXIMUM_WAIT_OBJECTS) {
1936 MonoThread *thread=(MonoThread *)value;
1938 /* Ignore background threads, we abort them later */
1939 mono_monitor_enter (thread->synch_lock);
1940 if (thread->state & ThreadState_Background) {
1941 THREAD_DEBUG (g_message ("%s: ignoring background thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
1942 mono_monitor_exit (thread->synch_lock);
1943 return; /* just leave, ignore */
1945 mono_monitor_exit (thread->synch_lock);
1947 if (mono_gc_is_finalizer_thread (thread)) {
1948 THREAD_DEBUG (g_message ("%s: ignoring finalizer thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
1952 if (thread == mono_thread_current ()) {
1953 THREAD_DEBUG (g_message ("%s: ignoring current thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
1957 if (thread == mono_thread_get_main ()) {
1958 THREAD_DEBUG (g_message ("%s: ignoring main thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
1962 handle = OpenThread (THREAD_ALL_ACCESS, TRUE, thread->tid);
1963 if (handle == NULL) {
1964 THREAD_DEBUG (g_message ("%s: ignoring unopenable thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
1968 wait->handles[wait->num]=handle;
1969 wait->threads[wait->num]=thread;
1972 THREAD_DEBUG (g_message ("%s: adding thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
1974 /* Just ignore the rest, we can't do anything with
1981 remove_and_abort_threads (gpointer key, gpointer value, gpointer user)
1983 struct wait_data *wait=(struct wait_data *)user;
1984 gsize self = GetCurrentThreadId ();
1985 MonoThread *thread = (MonoThread *) value;
1988 if (wait->num >= MAXIMUM_WAIT_OBJECTS)
1991 /* The finalizer thread is not a background thread */
1992 if (thread->tid != self && (thread->state & ThreadState_Background) != 0) {
1994 handle = OpenThread (THREAD_ALL_ACCESS, TRUE, thread->tid);
1998 if(thread->state & ThreadState_AbortRequested ||
1999 thread->state & ThreadState_Aborted) {
2000 THREAD_DEBUG (g_message ("%s: Thread id %"G_GSIZE_FORMAT" already aborting", __func__, (gsize)thread->tid));
2004 /* printf ("A: %d\n", wait->num); */
2005 wait->handles[wait->num]=thread->handle;
2006 wait->threads[wait->num]=thread;
2009 THREAD_DEBUG (g_print ("%s: Aborting id: %"G_GSIZE_FORMAT"\n", __func__, (gsize)thread->tid));
2010 mono_thread_stop (thread);
2014 return (thread->tid != self && !mono_gc_is_finalizer_thread (thread));
2017 void mono_thread_manage (void)
2019 struct wait_data *wait=g_new0 (struct wait_data, 1);
2021 /* join each thread that's still running */
2022 THREAD_DEBUG (g_message ("%s: Joining each running thread...", __func__));
2024 mono_threads_lock ();
2026 THREAD_DEBUG (g_message("%s: No threads", __func__));
2027 mono_threads_unlock ();
2030 mono_threads_unlock ();
2033 mono_threads_lock ();
2034 THREAD_DEBUG (g_message ("%s: There are %d threads to join", __func__, mono_g_hash_table_size (threads));
2035 mono_g_hash_table_foreach (threads, print_tids, NULL));
2037 ResetEvent (background_change_event);
2039 mono_g_hash_table_foreach (threads, build_wait_tids, wait);
2040 mono_threads_unlock ();
2042 /* Something to wait for */
2043 wait_for_tids_or_state_change (wait, INFINITE);
2045 THREAD_DEBUG (g_message ("%s: I have %d threads after waiting.", __func__, wait->num));
2046 } while(wait->num>0);
2048 mono_runtime_set_shutting_down ();
2050 THREAD_DEBUG (g_message ("%s: threadpool cleanup", __func__));
2051 mono_thread_pool_cleanup ();
2054 * Remove everything but the finalizer thread and self.
2055 * Also abort all the background threads
2058 mono_threads_lock ();
2061 mono_g_hash_table_foreach_remove (threads, remove_and_abort_threads, wait);
2063 mono_threads_unlock ();
2065 THREAD_DEBUG (g_message ("%s: wait->num is now %d", __func__, wait->num));
2067 /* Something to wait for */
2068 wait_for_tids (wait, INFINITE);
2070 } while (wait->num > 0);
2073 * give the subthreads a chance to really quit (this is mainly needed
2074 * to get correct user and system times from getrusage/wait/time(1)).
2075 * This could be removed if we avoid pthread_detach() and use pthread_join().
2077 #ifndef PLATFORM_WIN32
2084 static void terminate_thread (gpointer key, gpointer value, gpointer user)
2086 MonoThread *thread=(MonoThread *)value;
2088 if(thread->tid != (gsize)user) {
2089 /*TerminateThread (thread->handle, -1);*/
2093 void mono_thread_abort_all_other_threads (void)
2095 gsize self = GetCurrentThreadId ();
2097 mono_threads_lock ();
2098 THREAD_DEBUG (g_message ("%s: There are %d threads to abort", __func__,
2099 mono_g_hash_table_size (threads));
2100 mono_g_hash_table_foreach (threads, print_tids, NULL));
2102 mono_g_hash_table_foreach (threads, terminate_thread, (gpointer)self);
2104 mono_threads_unlock ();
2108 collect_threads (gpointer key, gpointer value, gpointer user_data)
2110 MonoThread *thread = (MonoThread*)value;
2111 struct wait_data *wait = (struct wait_data*)user_data;
2114 if (wait->num<MAXIMUM_WAIT_OBJECTS) {
2115 handle = OpenThread (THREAD_ALL_ACCESS, TRUE, thread->tid);
2119 wait->handles [wait->num] = handle;
2120 wait->threads [wait->num] = thread;
2126 * mono_thread_suspend_all_other_threads:
2128 * Suspend all managed threads except the finalizer thread and this thread.
2130 void mono_thread_suspend_all_other_threads (void)
2132 struct wait_data *wait = g_new0 (struct wait_data, 1);
2134 gsize self = GetCurrentThreadId ();
2136 guint32 eventidx = 0;
2139 * Make a copy of the hashtable since we can't do anything with
2140 * threads while threads_mutex is held.
2142 mono_threads_lock ();
2143 mono_g_hash_table_foreach (threads, collect_threads, wait);
2144 mono_threads_unlock ();
2146 events = g_new0 (gpointer, wait->num);
2148 /* Get the suspended events that we'll be waiting for */
2149 for (i = 0; i < wait->num; ++i) {
2150 MonoThread *thread = wait->threads [i];
2152 if ((thread->tid == self) || mono_gc_is_finalizer_thread (thread)) {
2153 //CloseHandle (wait->handles [i]);
2154 wait->threads [i] = NULL; /* ignore this thread in next loop */
2158 mono_monitor_enter (thread->synch_lock);
2160 if ((thread->state & ThreadState_Suspended) != 0 ||
2161 (thread->state & ThreadState_SuspendRequested) != 0 ||
2162 (thread->state & ThreadState_StopRequested) != 0 ||
2163 (thread->state & ThreadState_Stopped) != 0) {
2164 mono_monitor_exit (thread->synch_lock);
2165 CloseHandle (wait->handles [i]);
2166 wait->threads [i] = NULL; /* ignore this thread in next loop */
2170 /* Convert abort requests into suspend requests */
2171 if ((thread->state & ThreadState_AbortRequested) != 0)
2172 thread->state &= ~ThreadState_AbortRequested;
2174 thread->state |= ThreadState_SuspendRequested;
2176 if (thread->suspended_event == NULL)
2177 thread->suspended_event = CreateEvent (NULL, TRUE, FALSE, NULL);
2179 events [eventidx++] = thread->suspended_event;
2180 mono_monitor_exit (thread->synch_lock);
2182 /* Signal the thread to suspend */
2183 signal_thread_state_change (thread);
2186 WaitForMultipleObjectsEx (eventidx, events, TRUE, INFINITE, FALSE);
2187 for (i = 0; i < wait->num; ++i) {
2188 MonoThread *thread = wait->threads [i];
2193 mono_monitor_enter (thread->synch_lock);
2194 CloseHandle (thread->suspended_event);
2195 thread->suspended_event = NULL;
2196 mono_monitor_exit (thread->synch_lock);
2204 * mono_threads_request_thread_dump:
2206 * Ask all threads except the current to print their stacktrace to stdout.
2209 mono_threads_request_thread_dump (void)
2211 struct wait_data *wait = g_new0 (struct wait_data, 1);
2215 * Make a copy of the hashtable since we can't do anything with
2216 * threads while threads_mutex is held.
2218 mono_threads_lock ();
2219 mono_g_hash_table_foreach (threads, collect_threads, wait);
2220 mono_threads_unlock ();
2222 for (i = 0; i < wait->num; ++i) {
2223 MonoThread *thread = wait->threads [i];
2225 if (!mono_gc_is_finalizer_thread (thread) && (thread != mono_thread_current ()) && !thread->thread_dump_requested) {
2226 thread->thread_dump_requested = TRUE;
2228 signal_thread_state_change (thread);
2231 CloseHandle (wait->handles [i]);
2236 * mono_thread_push_appdomain_ref:
2238 * Register that the current thread may have references to objects in domain
2239 * @domain on its stack. Each call to this function should be paired with a
2240 * call to pop_appdomain_ref.
2243 mono_thread_push_appdomain_ref (MonoDomain *domain)
2245 MonoThread *thread = mono_thread_current ();
2248 /* printf ("PUSH REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, domain->friendly_name); */
2249 mono_threads_lock ();
2250 thread->appdomain_refs = g_slist_prepend (thread->appdomain_refs, domain);
2251 mono_threads_unlock ();
2256 mono_thread_pop_appdomain_ref (void)
2258 MonoThread *thread = mono_thread_current ();
2261 /* printf ("POP REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, ((MonoDomain*)(thread->appdomain_refs->data))->friendly_name); */
2262 mono_threads_lock ();
2263 /* FIXME: How can the list be empty ? */
2264 if (thread->appdomain_refs)
2265 thread->appdomain_refs = g_slist_remove (thread->appdomain_refs, thread->appdomain_refs->data);
2266 mono_threads_unlock ();
2271 mono_thread_has_appdomain_ref (MonoThread *thread, MonoDomain *domain)
2274 mono_threads_lock ();
2275 res = g_slist_find (thread->appdomain_refs, domain) != NULL;
2276 mono_threads_unlock ();
2280 typedef struct abort_appdomain_data {
2281 struct wait_data wait;
2283 } abort_appdomain_data;
2286 abort_appdomain_thread (gpointer key, gpointer value, gpointer user_data)
2288 MonoThread *thread = (MonoThread*)value;
2289 abort_appdomain_data *data = (abort_appdomain_data*)user_data;
2290 MonoDomain *domain = data->domain;
2292 if (mono_thread_has_appdomain_ref (thread, domain)) {
2293 HANDLE handle = OpenThread (THREAD_ALL_ACCESS, TRUE, thread->tid);
2297 /* printf ("ABORTING THREAD %p BECAUSE IT REFERENCES DOMAIN %s.\n", thread->tid, domain->friendly_name); */
2299 ves_icall_System_Threading_Thread_Abort (thread, NULL);
2301 if(data->wait.num<MAXIMUM_WAIT_OBJECTS) {
2302 data->wait.handles [data->wait.num] = handle;
2303 data->wait.threads [data->wait.num] = thread;
2306 /* Just ignore the rest, we can't do anything with
2314 * mono_threads_abort_appdomain_threads:
2316 * Abort threads which has references to the given appdomain.
2319 mono_threads_abort_appdomain_threads (MonoDomain *domain, int timeout)
2321 abort_appdomain_data user_data;
2324 /* printf ("ABORT BEGIN.\n"); */
2326 start_time = GetTickCount ();
2328 mono_threads_lock ();
2330 user_data.domain = domain;
2331 user_data.wait.num = 0;
2332 mono_g_hash_table_foreach (threads, abort_appdomain_thread, &user_data);
2333 mono_threads_unlock ();
2335 if (user_data.wait.num > 0)
2337 * We should wait for the threads either to abort, or to leave the
2338 * domain. We can't do the latter, so we wait with a timeout.
2340 wait_for_tids (&user_data.wait, 100);
2342 /* Update remaining time */
2343 timeout -= GetTickCount () - start_time;
2344 start_time = GetTickCount ();
2349 while (user_data.wait.num > 0);
2351 /* printf ("ABORT DONE.\n"); */
2357 clear_cached_culture (gpointer key, gpointer value, gpointer user_data)
2359 MonoThread *thread = (MonoThread*)value;
2360 MonoDomain *domain = (MonoDomain*)user_data;
2363 /* No locking needed here */
2364 /* FIXME: why no locking? writes to the cache are protected with synch_lock above */
2366 if (thread->cached_culture_info) {
2367 for (i = 0; i < NUM_CACHED_CULTURES * 2; ++i) {
2368 MonoObject *obj = mono_array_get (thread->cached_culture_info, MonoObject*, i);
2369 if (obj && obj->vtable->domain == domain)
2370 mono_array_set (thread->cached_culture_info, MonoObject*, i, NULL);
2376 * mono_threads_clear_cached_culture:
2378 * Clear the cached_current_culture from all threads if it is in the
2382 mono_threads_clear_cached_culture (MonoDomain *domain)
2384 mono_threads_lock ();
2385 mono_g_hash_table_foreach (threads, clear_cached_culture, domain);
2386 mono_threads_unlock ();
2390 * mono_thread_get_pending_exception:
2392 * Return an exception which needs to be raised when leaving a catch clause.
2393 * This is used for undeniable exception propagation.
2396 mono_thread_get_pending_exception (void)
2398 MonoThread *thread = mono_thread_current ();
2400 MONO_ARCH_SAVE_REGS;
2402 if (thread && thread->abort_exc && !is_running_protected_wrapper ()) {
2404 * FIXME: Clear the abort exception and return an AppDomainUnloaded
2405 * exception if the thread no longer references a dying appdomain.
2407 thread->abort_exc->trace_ips = NULL;
2408 thread->abort_exc->stack_trace = NULL;
2409 return thread->abort_exc;
2415 #define NUM_STATIC_DATA_IDX 8
2416 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
2417 1024, 4096, 16384, 65536, 262144, 1048576, 4194304, 16777216
2422 * mono_alloc_static_data
2424 * Allocate memory blocks for storing threads or context static data
2427 mono_alloc_static_data (gpointer **static_data_ptr, guint32 offset)
2429 guint idx = (offset >> 24) - 1;
2432 gpointer* static_data = *static_data_ptr;
2434 static_data = mono_gc_alloc_fixed (static_data_size [0], NULL);
2435 *static_data_ptr = static_data;
2436 static_data [0] = static_data;
2439 for (i = 1; i <= idx; ++i) {
2440 if (static_data [i])
2442 static_data [i] = mono_gc_alloc_fixed (static_data_size [i], NULL);
2447 * mono_init_static_data_info
2449 * Initializes static data counters
2451 static void mono_init_static_data_info (StaticDataInfo *static_data)
2453 static_data->idx = 0;
2454 static_data->offset = 0;
2458 * mono_alloc_static_data_slot
2460 * Generates an offset for static data. static_data contains the counters
2461 * used to generate it.
2464 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align)
2468 if (!static_data->idx && !static_data->offset) {
2470 * we use the first chunk of the first allocation also as
2471 * an array for the rest of the data
2473 static_data->offset = sizeof (gpointer) * NUM_STATIC_DATA_IDX;
2475 static_data->offset += align - 1;
2476 static_data->offset &= ~(align - 1);
2477 if (static_data->offset + size >= static_data_size [static_data->idx]) {
2478 static_data->idx ++;
2479 g_assert (size <= static_data_size [static_data->idx]);
2481 * massive unloading and reloading of domains with thread-static
2482 * data may eventually exceed the allocated storage...
2483 * Need to check what the MS runtime does in that case.
2484 * Note that for each appdomain, we need to allocate a separate
2485 * thread data slot for security reasons. We could keep track
2486 * of the slots per-domain and when the domain is unloaded
2487 * out the slots on a sort of free list.
2489 g_assert (static_data->idx < NUM_STATIC_DATA_IDX);
2490 static_data->offset = 0;
2492 offset = static_data->offset | ((static_data->idx + 1) << 24);
2493 static_data->offset += size;
2498 * ensure thread static fields already allocated are valid for thread
2499 * This function is called when a thread is created or on thread attach.
2502 thread_adjust_static_data (MonoThread *thread)
2506 mono_threads_lock ();
2507 if (thread_static_info.offset || thread_static_info.idx > 0) {
2508 /* get the current allocated size */
2509 offset = thread_static_info.offset | ((thread_static_info.idx + 1) << 24);
2510 mono_alloc_static_data (&(thread->static_data), offset);
2512 mono_threads_unlock ();
2516 alloc_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
2518 MonoThread *thread = value;
2519 guint32 offset = GPOINTER_TO_UINT (user);
2521 mono_alloc_static_data (&(thread->static_data), offset);
2525 * The offset for a special static variable is composed of three parts:
2526 * a bit that indicates the type of static data (0:thread, 1:context),
2527 * an index in the array of chunks of memory for the thread (thread->static_data)
2528 * and an offset in that chunk of mem. This allows allocating less memory in the
2533 mono_alloc_special_static_data (guint32 static_type, guint32 size, guint32 align)
2536 if (static_type == SPECIAL_STATIC_THREAD)
2538 mono_threads_lock ();
2539 offset = mono_alloc_static_data_slot (&thread_static_info, size, align);
2540 /* This can be called during startup */
2541 if (threads != NULL)
2542 mono_g_hash_table_foreach (threads, alloc_thread_static_data_helper, GUINT_TO_POINTER (offset));
2543 mono_threads_unlock ();
2547 g_assert (static_type == SPECIAL_STATIC_CONTEXT);
2548 mono_contexts_lock ();
2549 offset = mono_alloc_static_data_slot (&context_static_info, size, align);
2550 mono_contexts_unlock ();
2551 offset |= 0x80000000; /* Set the high bit to indicate context static data */
2557 mono_get_special_static_data (guint32 offset)
2559 /* The high bit means either thread (0) or static (1) data. */
2561 guint32 static_type = (offset & 0x80000000);
2564 offset &= 0x7fffffff;
2565 idx = (offset >> 24) - 1;
2567 if (static_type == 0)
2569 MonoThread *thread = mono_thread_current ();
2570 return ((char*) thread->static_data [idx]) + (offset & 0xffffff);
2574 /* Allocate static data block under demand, since we don't have a list
2577 MonoAppContext *context = mono_context_get ();
2578 if (!context->static_data || !context->static_data [idx]) {
2579 mono_contexts_lock ();
2580 mono_alloc_static_data (&(context->static_data), offset);
2581 mono_contexts_unlock ();
2583 return ((char*) context->static_data [idx]) + (offset & 0xffffff);
2587 static MonoClassField *local_slots = NULL;
2590 /* local tls data to get locals_slot from a thread */
2593 /* index in the locals_slot array */
2598 clear_local_slot (gpointer key, gpointer value, gpointer user_data)
2600 LocalSlotID *sid = user_data;
2601 MonoThread *thread = (MonoThread*)value;
2602 MonoArray *slots_array;
2604 * the static field is stored at: ((char*) thread->static_data [idx]) + (offset & 0xffffff);
2605 * it is for the right domain, so we need to check if it is allocated an initialized
2606 * for the current thread.
2608 /*g_print ("handling thread %p\n", thread);*/
2609 if (!thread->static_data || !thread->static_data [sid->idx])
2611 slots_array = *(MonoArray **)(((char*) thread->static_data [sid->idx]) + (sid->offset & 0xffffff));
2612 if (!slots_array || sid->slot >= mono_array_length (slots_array))
2614 mono_array_set (slots_array, MonoObject*, sid->slot, NULL);
2618 mono_thread_free_local_slot_values (int slot, MonoBoolean thread_local)
2626 local_slots = mono_class_get_field_from_name (mono_defaults.thread_class, "local_slots");
2628 g_warning ("local_slots field not found in Thread class");
2632 domain = mono_domain_get ();
2633 mono_domain_lock (domain);
2634 if (domain->special_static_fields)
2635 addr = g_hash_table_lookup (domain->special_static_fields, local_slots);
2636 mono_domain_unlock (domain);
2639 /*g_print ("freeing slot %d at %p\n", slot, addr);*/
2640 sid.offset = GPOINTER_TO_UINT (addr);
2641 sid.offset &= 0x7fffffff;
2642 sid.idx = (sid.offset >> 24) - 1;
2643 mono_threads_lock ();
2644 mono_g_hash_table_foreach (threads, clear_local_slot, &sid);
2645 mono_threads_unlock ();
2647 /* FIXME: clear the slot for MonoAppContexts, too */
2652 static CALLBACK void dummy_apc (ULONG_PTR param)
2656 static guint32 dummy_apc (gpointer param)
2663 * mono_thread_execute_interruption
2665 * Performs the operation that the requested thread state requires (abort,
2668 static MonoException* mono_thread_execute_interruption (MonoThread *thread)
2670 mono_monitor_enter (thread->synch_lock);
2672 if (thread->interruption_requested) {
2673 /* this will consume pending APC calls */
2674 WaitForSingleObjectEx (GetCurrentThread(), 0, TRUE);
2675 InterlockedDecrement (&thread_interruption_requested);
2676 thread->interruption_requested = FALSE;
2679 if ((thread->state & ThreadState_AbortRequested) != 0) {
2680 if (thread->abort_exc == NULL)
2681 MONO_OBJECT_SETREF (thread, abort_exc, mono_get_exception_thread_abort ());
2682 mono_monitor_exit (thread->synch_lock);
2683 return thread->abort_exc;
2685 else if ((thread->state & ThreadState_SuspendRequested) != 0) {
2686 thread->state &= ~ThreadState_SuspendRequested;
2687 thread->state |= ThreadState_Suspended;
2688 thread->suspend_event = CreateEvent (NULL, TRUE, FALSE, NULL);
2689 if (thread->suspended_event)
2690 SetEvent (thread->suspended_event);
2691 mono_monitor_exit (thread->synch_lock);
2693 WaitForSingleObject (thread->suspend_event, INFINITE);
2695 mono_monitor_enter (thread->synch_lock);
2696 CloseHandle (thread->suspend_event);
2697 thread->suspend_event = NULL;
2698 thread->state &= ~ThreadState_Suspended;
2700 /* The thread that requested the resume will have replaced this event
2701 * and will be waiting for it
2703 SetEvent (thread->resume_event);
2704 mono_monitor_exit (thread->synch_lock);
2707 else if ((thread->state & ThreadState_StopRequested) != 0) {
2708 /* FIXME: do this through the JIT? */
2709 mono_monitor_exit (thread->synch_lock);
2710 mono_thread_exit ();
2714 mono_monitor_exit (thread->synch_lock);
2719 * mono_thread_request_interruption
2721 * A signal handler can call this method to request the interruption of a
2722 * thread. The result of the interruption will depend on the current state of
2723 * the thread. If the result is an exception that needs to be throw, it is
2724 * provided as return value.
2726 MonoException* mono_thread_request_interruption (gboolean running_managed)
2728 MonoThread *thread = mono_thread_current ();
2730 /* The thread may already be stopping */
2734 mono_monitor_enter (thread->synch_lock);
2736 if (thread->interruption_requested) {
2737 mono_monitor_exit (thread->synch_lock);
2741 if (!running_managed || is_running_protected_wrapper ()) {
2742 /* Can't stop while in unmanaged code. Increase the global interruption
2743 request count. When exiting the unmanaged method the count will be
2744 checked and the thread will be interrupted. */
2746 InterlockedIncrement (&thread_interruption_requested);
2747 thread->interruption_requested = TRUE;
2748 mono_monitor_exit (thread->synch_lock);
2750 /* this will awake the thread if it is in WaitForSingleObject
2752 QueueUserAPC ((PAPCFUNC)dummy_apc, thread->handle, NULL);
2756 mono_monitor_exit (thread->synch_lock);
2757 return mono_thread_execute_interruption (thread);
2761 gboolean mono_thread_interruption_requested ()
2763 if (thread_interruption_requested) {
2764 MonoThread *thread = mono_thread_current ();
2765 /* The thread may already be stopping */
2767 return (thread->interruption_requested);
2772 static void mono_thread_interruption_checkpoint_request (gboolean bypass_abort_protection)
2774 MonoThread *thread = mono_thread_current ();
2776 /* The thread may already be stopping */
2780 if (thread->interruption_requested && (bypass_abort_protection || !is_running_protected_wrapper ())) {
2781 MonoException* exc = mono_thread_execute_interruption (thread);
2782 if (exc) mono_raise_exception (exc);
2787 * Performs the interruption of the current thread, if one has been requested,
2788 * and the thread is not running a protected wrapper.
2790 void mono_thread_interruption_checkpoint ()
2792 mono_thread_interruption_checkpoint_request (FALSE);
2796 * Performs the interruption of the current thread, if one has been requested.
2798 void mono_thread_force_interruption_checkpoint ()
2800 mono_thread_interruption_checkpoint_request (TRUE);
2804 * mono_thread_interruption_request_flag:
2806 * Returns the address of a flag that will be non-zero if an interruption has
2807 * been requested for a thread. The thread to interrupt may not be the current
2808 * thread, so an additional call to mono_thread_interruption_requested() or
2809 * mono_thread_interruption_checkpoint() is allways needed if the flag is not
2812 gint32* mono_thread_interruption_request_flag ()
2814 return &thread_interruption_requested;