2 * threads.c: Thread support internal calls
5 * Dick Porter (dick@ximian.com)
6 * Paolo Molaro (lupus@ximian.com)
7 * Patrik Torstensson (patrik.torstensson@labs2.com)
9 * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
10 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
11 * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
12 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
20 #include <mono/metadata/object.h>
21 #include <mono/metadata/domain-internals.h>
22 #include <mono/metadata/profiler-private.h>
23 #include <mono/metadata/threads.h>
24 #include <mono/metadata/threads-types.h>
25 #include <mono/metadata/exception.h>
26 #include <mono/metadata/environment.h>
27 #include <mono/metadata/monitor.h>
28 #include <mono/metadata/gc-internals.h>
29 #include <mono/metadata/marshal.h>
30 #include <mono/metadata/runtime.h>
31 #include <mono/io-layer/io-layer.h>
32 #include <mono/metadata/object-internals.h>
33 #include <mono/metadata/mono-debug-debugger.h>
34 #include <mono/utils/monobitset.h>
35 #include <mono/utils/mono-compiler.h>
36 #include <mono/utils/mono-mmap.h>
37 #include <mono/utils/mono-membar.h>
38 #include <mono/utils/mono-time.h>
39 #include <mono/utils/mono-threads.h>
40 #include <mono/utils/hazard-pointer.h>
41 #include <mono/utils/mono-tls.h>
42 #include <mono/utils/atomic.h>
43 #include <mono/utils/mono-memory-model.h>
44 #include <mono/utils/mono-threads-coop.h>
45 #include <mono/utils/mono-error-internals.h>
47 #include <mono/metadata/gc-internals.h>
48 #include <mono/metadata/reflection-internals.h>
54 #if defined(PLATFORM_ANDROID) && !defined(TARGET_ARM64) && !defined(TARGET_AMD64)
55 #define USE_TKILL_ON_ANDROID 1
58 #ifdef PLATFORM_ANDROID
61 #ifdef USE_TKILL_ON_ANDROID
62 extern int tkill (pid_t tid, int signal);
66 /*#define THREAD_DEBUG(a) do { a; } while (0)*/
67 #define THREAD_DEBUG(a)
68 /*#define THREAD_WAIT_DEBUG(a) do { a; } while (0)*/
69 #define THREAD_WAIT_DEBUG(a)
70 /*#define LIBGC_DEBUG(a) do { a; } while (0)*/
71 #define LIBGC_DEBUG(a)
73 #define SPIN_TRYLOCK(i) (InterlockedCompareExchange (&(i), 1, 0) == 0)
74 #define SPIN_LOCK(i) do { \
75 if (SPIN_TRYLOCK (i)) \
79 #define SPIN_UNLOCK(i) i = 0
81 #define LOCK_THREAD(thread) lock_thread((thread))
82 #define UNLOCK_THREAD(thread) unlock_thread((thread))
86 guint32 (*func)(void *);
102 typedef struct _StaticDataFreeList StaticDataFreeList;
103 struct _StaticDataFreeList {
104 StaticDataFreeList *next;
112 StaticDataFreeList *freelist;
115 /* Number of cached culture objects in the MonoThread->cached_culture_info array
116 * (per-type): we use the first NUM entries for CultureInfo and the last for
117 * UICultureInfo. So the size of the array is really NUM_CACHED_CULTURES * 2.
119 #define NUM_CACHED_CULTURES 4
120 #define CULTURES_START_IDX 0
121 #define UICULTURES_START_IDX NUM_CACHED_CULTURES
123 /* Controls access to the 'threads' hash table */
124 static void mono_threads_lock (void);
125 static void mono_threads_unlock (void);
126 static MonoCoopMutex threads_mutex;
128 /* Controls access to the 'joinable_threads' hash table */
129 #define joinable_threads_lock() mono_os_mutex_lock (&joinable_threads_mutex)
130 #define joinable_threads_unlock() mono_os_mutex_unlock (&joinable_threads_mutex)
131 static mono_mutex_t joinable_threads_mutex;
133 /* Holds current status of static data heap */
134 static StaticDataInfo thread_static_info;
135 static StaticDataInfo context_static_info;
137 /* The hash of existing threads (key is thread ID, value is
138 * MonoInternalThread*) that need joining before exit
140 static MonoGHashTable *threads=NULL;
142 /* List of app context GC handles.
143 * Added to from ves_icall_System_Runtime_Remoting_Contexts_Context_RegisterContext ().
145 static GHashTable *contexts = NULL;
147 /* Cleanup queue for contexts. */
148 static MonoReferenceQueue *context_queue;
151 * Threads which are starting up and they are not in the 'threads' hash yet.
152 * When handle_store is called for a thread, it will be removed from this hash table.
153 * Protected by mono_threads_lock ().
155 static MonoGHashTable *threads_starting_up = NULL;
157 /* The TLS key that holds the MonoObject assigned to each thread */
158 static MonoNativeTlsKey current_object_key;
161 /* Protected by the threads lock */
162 static GHashTable *joinable_threads;
163 static int joinable_thread_count;
165 #ifdef MONO_HAVE_FAST_TLS
166 /* we need to use both the Tls* functions and __thread because
167 * the gc needs to see all the threads
169 MONO_FAST_TLS_DECLARE(tls_current_object);
170 #define SET_CURRENT_OBJECT(x) do { \
171 MONO_FAST_TLS_SET (tls_current_object, x); \
172 mono_native_tls_set_value (current_object_key, x); \
174 #define GET_CURRENT_OBJECT() ((MonoInternalThread*) MONO_FAST_TLS_GET (tls_current_object))
176 #define SET_CURRENT_OBJECT(x) mono_native_tls_set_value (current_object_key, x)
177 #define GET_CURRENT_OBJECT() (MonoInternalThread*) mono_native_tls_get_value (current_object_key)
180 /* function called at thread start */
181 static MonoThreadStartCB mono_thread_start_cb = NULL;
183 /* function called at thread attach */
184 static MonoThreadAttachCB mono_thread_attach_cb = NULL;
186 /* function called at thread cleanup */
187 static MonoThreadCleanupFunc mono_thread_cleanup_fn = NULL;
189 /* The default stack size for each thread */
190 static guint32 default_stacksize = 0;
191 #define default_stacksize_for_thread(thread) ((thread)->stack_size? (thread)->stack_size: default_stacksize)
193 static void thread_adjust_static_data (MonoInternalThread *thread);
194 static void context_adjust_static_data (MonoAppContext *ctx);
195 static void mono_free_static_data (gpointer* static_data);
196 static void mono_init_static_data_info (StaticDataInfo *static_data);
197 static guint32 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align);
198 static gboolean mono_thread_resume (MonoInternalThread* thread);
199 static void async_abort_internal (MonoInternalThread *thread, gboolean install_async_abort);
200 static void self_abort_internal (MonoError *error);
201 static void async_suspend_internal (MonoInternalThread *thread, gboolean interrupt);
202 static void self_suspend_internal (void);
204 static MonoException* mono_thread_execute_interruption (void);
205 static void ref_stack_destroy (gpointer rs);
207 /* Spin lock for InterlockedXXX 64 bit functions */
208 #define mono_interlocked_lock() mono_os_mutex_lock (&interlocked_mutex)
209 #define mono_interlocked_unlock() mono_os_mutex_unlock (&interlocked_mutex)
210 static mono_mutex_t interlocked_mutex;
212 /* global count of thread interruptions requested */
213 static gint32 thread_interruption_requested = 0;
215 /* Event signaled when a thread changes its background mode */
216 static HANDLE background_change_event;
218 static gboolean shutting_down = FALSE;
220 static gint32 managed_thread_id_counter = 0;
222 /* Class lazy loading functions */
223 static GENERATE_GET_CLASS_WITH_CACHE (appdomain_unloaded_exception, System, AppDomainUnloadedException)
226 mono_threads_lock (void)
228 mono_locks_coop_acquire (&threads_mutex, ThreadsLock);
232 mono_threads_unlock (void)
234 mono_locks_coop_release (&threads_mutex, ThreadsLock);
239 get_next_managed_thread_id (void)
241 return InterlockedIncrement (&managed_thread_id_counter);
245 mono_thread_get_tls_key (void)
247 return current_object_key;
251 mono_thread_get_tls_offset (void)
256 if (current_object_key)
257 offset = current_object_key;
259 MONO_THREAD_VAR_OFFSET (tls_current_object,offset);
264 static inline MonoNativeThreadId
265 thread_get_tid (MonoInternalThread *thread)
267 /* We store the tid as a guint64 to keep the object layout constant between platforms */
268 return MONO_UINT_TO_NATIVE_THREAD_ID (thread->tid);
271 /* handle_store() and handle_remove() manage the array of threads that
272 * still need to be waited for when the main thread exits.
274 * If handle_store() returns FALSE the thread must not be started
275 * because Mono is shutting down.
277 static gboolean handle_store(MonoThread *thread, gboolean force_attach)
279 mono_threads_lock ();
281 THREAD_DEBUG (g_message ("%s: thread %p ID %"G_GSIZE_FORMAT, __func__, thread, (gsize)thread->internal_thread->tid));
283 if (threads_starting_up)
284 mono_g_hash_table_remove (threads_starting_up, thread);
286 if (shutting_down && !force_attach) {
287 mono_threads_unlock ();
292 MONO_GC_REGISTER_ROOT_FIXED (threads, MONO_ROOT_SOURCE_THREADING, "threads table");
293 threads=mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_VALUE_GC, MONO_ROOT_SOURCE_THREADING, "threads table");
296 /* We don't need to duplicate thread->handle, because it is
297 * only closed when the thread object is finalized by the GC.
299 g_assert (thread->internal_thread);
300 mono_g_hash_table_insert(threads, (gpointer)(gsize)(thread->internal_thread->tid),
301 thread->internal_thread);
303 mono_threads_unlock ();
308 static gboolean handle_remove(MonoInternalThread *thread)
311 gsize tid = thread->tid;
313 THREAD_DEBUG (g_message ("%s: thread ID %"G_GSIZE_FORMAT, __func__, tid));
315 mono_threads_lock ();
318 /* We have to check whether the thread object for the
319 * tid is still the same in the table because the
320 * thread might have been destroyed and the tid reused
321 * in the meantime, in which case the tid would be in
322 * the table, but with another thread object.
324 if (mono_g_hash_table_lookup (threads, (gpointer)tid) == thread) {
325 mono_g_hash_table_remove (threads, (gpointer)tid);
334 mono_threads_unlock ();
336 /* Don't close the handle here, wait for the object finalizer
337 * to do it. Otherwise, the following race condition applies:
339 * 1) Thread exits (and handle_remove() closes the handle)
341 * 2) Some other handle is reassigned the same slot
343 * 3) Another thread tries to join the first thread, and
344 * blocks waiting for the reassigned handle to be signalled
345 * (which might never happen). This is possible, because the
346 * thread calling Join() still has a reference to the first
352 static void ensure_synch_cs_set (MonoInternalThread *thread)
354 MonoCoopMutex *synch_cs;
356 if (thread->synch_cs != NULL) {
360 synch_cs = g_new0 (MonoCoopMutex, 1);
361 mono_coop_mutex_init_recursive (synch_cs);
363 if (InterlockedCompareExchangePointer ((gpointer *)&thread->synch_cs,
364 synch_cs, NULL) != NULL) {
365 /* Another thread must have installed this CS */
366 mono_coop_mutex_destroy (synch_cs);
372 lock_thread (MonoInternalThread *thread)
374 if (!thread->synch_cs)
375 ensure_synch_cs_set (thread);
377 g_assert (thread->synch_cs);
379 mono_coop_mutex_lock (thread->synch_cs);
383 unlock_thread (MonoInternalThread *thread)
385 mono_coop_mutex_unlock (thread->synch_cs);
389 * NOTE: this function can be called also for threads different from the current one:
390 * make sure no code called from it will ever assume it is run on the thread that is
391 * getting cleaned up.
393 static void thread_cleanup (MonoInternalThread *thread)
395 g_assert (thread != NULL);
397 if (thread->abort_state_handle) {
398 mono_gchandle_free (thread->abort_state_handle);
399 thread->abort_state_handle = 0;
401 thread->abort_exc = NULL;
402 thread->current_appcontext = NULL;
405 * This is necessary because otherwise we might have
406 * cross-domain references which will not get cleaned up when
407 * the target domain is unloaded.
409 if (thread->cached_culture_info) {
411 for (i = 0; i < NUM_CACHED_CULTURES * 2; ++i)
412 mono_array_set (thread->cached_culture_info, MonoObject*, i, NULL);
416 * thread->synch_cs can be NULL if this was called after
417 * ves_icall_System_Threading_InternalThread_Thread_free_internal.
418 * This can happen only during shutdown.
419 * The shutting_down flag is not always set, so we can't assert on it.
421 if (thread->synch_cs)
422 LOCK_THREAD (thread);
424 thread->state |= ThreadState_Stopped;
425 thread->state &= ~ThreadState_Background;
427 if (thread->synch_cs)
428 UNLOCK_THREAD (thread);
431 An interruption request has leaked to cleanup. Adjust the global counter.
433 This can happen is the abort source thread finds the abortee (this) thread
434 in unmanaged code. If this thread never trips back to managed code or check
435 the local flag it will be left set and positively unbalance the global counter.
437 Leaving the counter unbalanced will cause a performance degradation since all threads
438 will now keep checking their local flags all the time.
440 if (InterlockedExchange (&thread->interruption_requested, 0))
441 InterlockedDecrement (&thread_interruption_requested);
443 /* if the thread is not in the hash it has been removed already */
444 if (!handle_remove (thread)) {
445 if (thread == mono_thread_internal_current ()) {
446 mono_domain_unset ();
447 mono_memory_barrier ();
449 /* This needs to be called even if handle_remove () fails */
450 if (mono_thread_cleanup_fn)
451 mono_thread_cleanup_fn (thread_get_tid (thread));
454 mono_release_type_locks (thread);
456 /* Can happen when we attach the profiler helper thread in order to heapshot. */
457 if (!mono_thread_info_lookup (MONO_UINT_TO_NATIVE_THREAD_ID (thread->tid))->tools_thread)
458 mono_profiler_thread_end (thread->tid);
460 mono_hazard_pointer_clear (mono_hazard_pointer_get (), 1);
462 if (thread == mono_thread_internal_current ()) {
464 * This will signal async signal handlers that the thread has exited.
465 * The profiler callback needs this to be set, so it cannot be done earlier.
467 mono_domain_unset ();
468 mono_memory_barrier ();
471 if (thread == mono_thread_internal_current ())
472 mono_thread_pop_appdomain_ref ();
474 thread->cached_culture_info = NULL;
476 mono_free_static_data (thread->static_data);
477 thread->static_data = NULL;
478 ref_stack_destroy (thread->appdomain_refs);
479 thread->appdomain_refs = NULL;
481 if (mono_thread_cleanup_fn)
482 mono_thread_cleanup_fn (thread_get_tid (thread));
484 if (mono_gc_is_moving ()) {
485 MONO_GC_UNREGISTER_ROOT (thread->thread_pinning_ref);
486 thread->thread_pinning_ref = NULL;
492 * A special static data offset (guint32) consists of 3 parts:
494 * [0] 6-bit index into the array of chunks.
495 * [6] 25-bit offset into the array.
496 * [31] Bit indicating thread or context static.
501 #if G_BYTE_ORDER != G_LITTLE_ENDIAN
512 } SpecialStaticOffset;
514 #define SPECIAL_STATIC_OFFSET_TYPE_THREAD 0
515 #define SPECIAL_STATIC_OFFSET_TYPE_CONTEXT 1
517 #define MAKE_SPECIAL_STATIC_OFFSET(index, offset, type) \
518 ((SpecialStaticOffset) { .fields = { (index), (offset), (type) } }.raw)
519 #define ACCESS_SPECIAL_STATIC_OFFSET(x,f) \
520 (((SpecialStaticOffset *) &(x))->fields.f)
523 get_thread_static_data (MonoInternalThread *thread, guint32 offset)
525 g_assert (ACCESS_SPECIAL_STATIC_OFFSET (offset, type) == SPECIAL_STATIC_OFFSET_TYPE_THREAD);
527 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
528 int off = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
530 return ((char *) thread->static_data [idx]) + off;
534 get_context_static_data (MonoAppContext *ctx, guint32 offset)
536 g_assert (ACCESS_SPECIAL_STATIC_OFFSET (offset, type) == SPECIAL_STATIC_OFFSET_TYPE_CONTEXT);
538 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
539 int off = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
541 return ((char *) ctx->static_data [idx]) + off;
545 get_current_thread_ptr_for_domain (MonoDomain *domain, MonoInternalThread *thread)
547 static MonoClassField *current_thread_field = NULL;
551 if (!current_thread_field) {
552 current_thread_field = mono_class_get_field_from_name (mono_defaults.thread_class, "current_thread");
553 g_assert (current_thread_field);
556 mono_class_vtable (domain, mono_defaults.thread_class);
557 mono_domain_lock (domain);
558 offset = GPOINTER_TO_UINT (g_hash_table_lookup (domain->special_static_fields, current_thread_field));
559 mono_domain_unlock (domain);
562 return (MonoThread **)get_thread_static_data (thread, offset);
566 set_current_thread_for_domain (MonoDomain *domain, MonoInternalThread *thread, MonoThread *current)
568 MonoThread **current_thread_ptr = get_current_thread_ptr_for_domain (domain, thread);
570 g_assert (current->obj.vtable->domain == domain);
572 g_assert (!*current_thread_ptr);
573 *current_thread_ptr = current;
577 create_thread_object (MonoDomain *domain, MonoError *error)
579 MonoVTable *vt = mono_class_vtable (domain, mono_defaults.thread_class);
580 MonoThread *t = (MonoThread*)mono_object_new_mature (vt, error);
585 new_thread_with_internal (MonoDomain *domain, MonoInternalThread *internal, MonoError *error)
589 thread = create_thread_object (domain, error);
590 if (!mono_error_ok (error))
593 MONO_OBJECT_SETREF (thread, internal_thread, internal);
598 static MonoInternalThread*
599 create_internal_thread (MonoError *error)
601 MonoInternalThread *thread;
604 vt = mono_class_vtable (mono_get_root_domain (), mono_defaults.internal_thread_class);
605 thread = (MonoInternalThread*) mono_object_new_mature (vt, error);
606 if (!mono_error_ok (error))
609 thread->synch_cs = g_new0 (MonoCoopMutex, 1);
610 mono_coop_mutex_init_recursive (thread->synch_cs);
612 thread->apartment_state = ThreadApartmentState_Unknown;
613 thread->managed_id = get_next_managed_thread_id ();
614 if (mono_gc_is_moving ()) {
615 thread->thread_pinning_ref = thread;
616 MONO_GC_REGISTER_ROOT_PINNING (thread->thread_pinning_ref, MONO_ROOT_SOURCE_THREADING, "thread pinning reference");
623 init_root_domain_thread (MonoInternalThread *thread, MonoThread *candidate, MonoError *error)
625 MonoDomain *domain = mono_get_root_domain ();
627 mono_error_init (error);
628 if (!candidate || candidate->obj.vtable->domain != domain) {
629 candidate = new_thread_with_internal (domain, thread, error);
630 return_val_if_nok (error, FALSE);
632 set_current_thread_for_domain (domain, thread, candidate);
633 g_assert (!thread->root_domain_thread);
634 MONO_OBJECT_SETREF (thread, root_domain_thread, candidate);
638 static guint32 WINAPI start_wrapper_internal(void *data)
641 MonoThreadInfo *info;
642 StartInfo *start_info = (StartInfo *)data;
643 guint32 (*start_func)(void *);
647 * We don't create a local to hold start_info->obj, so hopefully it won't get pinned during a
650 MonoInternalThread *internal = start_info->obj->internal_thread;
651 MonoObject *start_delegate = start_info->delegate;
652 MonoDomain *domain = start_info->obj->obj.vtable->domain;
654 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper", __func__, mono_native_thread_id_get ()));
656 /* We can be sure start_info->obj->tid and
657 * start_info->obj->handle have been set, because the thread
658 * was created suspended, and these values were set before the
662 info = mono_thread_info_current ();
664 internal->thread_info = info;
665 internal->small_id = info->small_id;
669 SET_CURRENT_OBJECT (internal);
671 /* Every thread references the appdomain which created it */
672 mono_thread_push_appdomain_ref (domain);
674 if (!mono_domain_set (domain, FALSE)) {
675 /* No point in raising an appdomain_unloaded exception here */
676 /* FIXME: Cleanup here */
677 mono_thread_pop_appdomain_ref ();
681 start_func = start_info->func;
682 start_arg = start_info->obj->start_obj;
684 start_arg = start_info->start_arg;
686 /* We have to do this here because mono_thread_new_init()
687 requires that root_domain_thread is set up. */
688 thread_adjust_static_data (internal);
689 init_root_domain_thread (internal, start_info->obj, &error);
690 mono_error_raise_exception (&error); /* FIXME don't raise here */
692 /* This MUST be called before any managed code can be
693 * executed, as it calls the callback function that (for the
694 * jit) sets the lmf marker.
696 mono_thread_new_init (tid, &tid, start_func);
697 internal->stack_ptr = &tid;
698 if (domain != mono_get_root_domain ())
699 set_current_thread_for_domain (domain, internal, start_info->obj);
701 LIBGC_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT",%d) Setting thread stack to %p", __func__, mono_native_thread_id_get (), getpid (), thread->stack_ptr));
703 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Setting current_object_key to %p", __func__, mono_native_thread_id_get (), internal));
705 /* On 2.0 profile (and higher), set explicitly since state might have been
707 if (internal->apartment_state == ThreadApartmentState_Unknown)
708 internal->apartment_state = ThreadApartmentState_MTA;
710 mono_thread_init_apartment_state ();
712 if(internal->start_notify!=NULL) {
713 /* Let the thread that called Start() know we're
716 ReleaseSemaphore (internal->start_notify, 1, NULL);
720 THREAD_DEBUG (g_message ("%s: start_wrapper for %"G_GSIZE_FORMAT, __func__,
724 * Call this after calling start_notify, since the profiler callback might want
725 * to lock the thread, and the lock is held by thread_start () which waits for
728 mono_profiler_thread_start (tid);
730 /* if the name was set before starting, we didn't invoke the profiler callback */
731 if (internal->name) {
732 char *tname = g_utf16_to_utf8 (internal->name, internal->name_len, NULL, NULL, NULL);
733 mono_profiler_thread_name (internal->tid, tname);
734 mono_native_thread_set_name (MONO_UINT_TO_NATIVE_THREAD_ID (internal->tid), tname);
738 /* start_func is set only for unmanaged start functions */
740 start_func (start_arg);
743 g_assert (start_delegate != NULL);
744 args [0] = start_arg;
745 /* we may want to handle the exception here. See comment below on unhandled exceptions */
746 mono_runtime_delegate_invoke_checked (start_delegate, args, &error);
747 mono_error_raise_exception (&error); /* FIXME don't raise here */
750 /* If the thread calls ExitThread at all, this remaining code
751 * will not be executed, but the main thread will eventually
752 * call thread_cleanup() on this thread's behalf.
755 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper terminating", __func__, mono_native_thread_id_get ()));
757 /* Do any cleanup needed for apartment state. This
758 * cannot be done in thread_cleanup since thread_cleanup could be
759 * called for a thread other than the current thread.
760 * mono_thread_cleanup_apartment_state cleans up apartment
761 * for the current thead */
762 mono_thread_cleanup_apartment_state ();
764 thread_cleanup (internal);
768 /* Remove the reference to the thread object in the TLS data,
769 * so the thread object can be finalized. This won't be
770 * reached if the thread threw an uncaught exception, so those
771 * thread handles will stay referenced :-( (This is due to
772 * missing support for scanning thread-specific data in the
773 * Boehm GC - the io-layer keeps a GC-visible hash of pointers
776 SET_CURRENT_OBJECT (NULL);
781 static guint32 WINAPI start_wrapper(void *data)
785 /* Avoid scanning the frames above this frame during a GC */
786 mono_gc_set_stack_end ((void*)&dummy);
788 return start_wrapper_internal (data);
794 * Common thread creation code.
795 * LOCKING: Acquires the threads lock.
798 create_thread (MonoThread *thread, MonoInternalThread *internal, StartInfo *start_info, gboolean threadpool_thread, guint32 stack_size,
801 HANDLE thread_handle;
802 MonoNativeThreadId tid;
803 guint32 create_flags;
806 * Join joinable threads to prevent running out of threads since the finalizer
807 * thread might be blocked/backlogged.
809 mono_threads_join_threads ();
811 mono_error_init (error);
813 mono_threads_lock ();
816 mono_threads_unlock ();
819 if (threads_starting_up == NULL) {
820 MONO_GC_REGISTER_ROOT_FIXED (threads_starting_up, MONO_ROOT_SOURCE_THREADING, "starting threads table");
821 threads_starting_up = mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_KEY_VALUE_GC, MONO_ROOT_SOURCE_THREADING, "starting threads table");
823 mono_g_hash_table_insert (threads_starting_up, thread, thread);
824 mono_threads_unlock ();
826 internal->start_notify = CreateSemaphore (NULL, 0, 0x7fffffff, NULL);
827 if (!internal->start_notify) {
828 mono_threads_lock ();
829 mono_g_hash_table_remove (threads_starting_up, thread);
830 mono_threads_unlock ();
831 g_warning ("%s: CreateSemaphore error 0x%x", __func__, GetLastError ());
837 stack_size = default_stacksize_for_thread (internal);
839 /* Create suspended, so we can do some housekeeping before the thread
842 create_flags = CREATE_SUSPENDED;
844 thread_handle = mono_threads_create_thread ((LPTHREAD_START_ROUTINE)start_wrapper, start_info,
845 stack_size, create_flags, &tid);
847 if (thread_handle == NULL) {
848 /* The thread couldn't be created, so set an exception */
849 mono_threads_lock ();
850 mono_g_hash_table_remove (threads_starting_up, thread);
851 mono_threads_unlock ();
853 mono_error_set_execution_engine (error, "Couldn't create thread. Error 0x%x", GetLastError());
856 THREAD_DEBUG (g_message ("%s: Started thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread_handle));
858 internal->handle = thread_handle;
859 internal->tid = MONO_NATIVE_THREAD_ID_TO_UINT (tid);
861 internal->threadpool_thread = threadpool_thread;
862 if (threadpool_thread)
863 mono_thread_set_state (internal, ThreadState_Background);
865 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Launching thread %p (%"G_GSIZE_FORMAT")", __func__, mono_native_thread_id_get (), internal, (gsize)internal->tid));
867 /* Only store the handle when the thread is about to be
868 * launched, to avoid the main thread deadlocking while trying
869 * to clean up a thread that will never be signalled.
871 if (!handle_store (thread, FALSE))
874 mono_thread_info_resume (tid);
876 if (internal->start_notify) {
878 * Wait for the thread to set up its TLS data etc, so
879 * theres no potential race condition if someone tries
880 * to look up the data believing the thread has
883 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") waiting for thread %p (%"G_GSIZE_FORMAT") to start", __func__, mono_native_thread_id_get (), internal, (gsize)internal->tid));
886 WaitForSingleObjectEx (internal->start_notify, INFINITE, FALSE);
889 CloseHandle (internal->start_notify);
890 internal->start_notify = NULL;
893 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Done launching thread %p (%"G_GSIZE_FORMAT")", __func__, mono_native_thread_id_get (), internal, (gsize)internal->tid));
898 void mono_thread_new_init (intptr_t tid, gpointer stack_start, gpointer func)
900 if (mono_thread_start_cb) {
901 mono_thread_start_cb (tid, stack_start, func);
905 void mono_threads_set_default_stacksize (guint32 stacksize)
907 default_stacksize = stacksize;
910 guint32 mono_threads_get_default_stacksize (void)
912 return default_stacksize;
916 * mono_thread_create_internal:
918 * ARG should not be a GC reference.
921 mono_thread_create_internal (MonoDomain *domain, gpointer func, gpointer arg, gboolean threadpool_thread, guint32 stack_size, MonoError *error)
924 MonoInternalThread *internal;
925 StartInfo *start_info;
928 mono_error_init (error);
930 thread = create_thread_object (domain, error);
931 return_val_if_nok (error, NULL);
933 internal = create_internal_thread (error);
934 return_val_if_nok (error, NULL);
936 MONO_OBJECT_SETREF (thread, internal_thread, internal);
938 start_info = g_new0 (StartInfo, 1);
939 start_info->func = (guint32 (*)(void *))func;
940 start_info->obj = thread;
941 start_info->start_arg = arg;
943 res = create_thread (thread, internal, start_info, threadpool_thread, stack_size, error);
944 return_val_if_nok (error, NULL);
946 /* Check that the managed and unmanaged layout of MonoInternalThread matches */
947 #ifndef MONO_CROSS_COMPILE
948 if (mono_check_corlib_version () == NULL)
949 g_assert (((char*)&internal->unused2 - (char*)internal) == mono_defaults.internal_thread_class->fields [mono_defaults.internal_thread_class->field.count - 1].offset);
956 mono_thread_create (MonoDomain *domain, gpointer func, gpointer arg)
959 if (!mono_thread_create_checked (domain, func, arg, &error))
960 mono_error_cleanup (&error);
964 mono_thread_create_checked (MonoDomain *domain, gpointer func, gpointer arg, MonoError *error)
966 return (NULL != mono_thread_create_internal (domain, func, arg, FALSE, 0, error));
970 mono_thread_attach (MonoDomain *domain)
973 MonoThread *thread = mono_thread_attach_full (domain, FALSE, &error);
974 mono_error_raise_exception (&error);
980 mono_thread_attach_full (MonoDomain *domain, gboolean force_attach, MonoError *error)
982 MonoThreadInfo *info;
983 MonoInternalThread *thread;
984 MonoThread *current_thread;
985 HANDLE thread_handle;
986 MonoNativeThreadId tid;
988 mono_error_init (error);
990 if ((thread = mono_thread_internal_current ())) {
991 if (domain != mono_domain_get ())
992 mono_domain_set (domain, TRUE);
993 /* Already attached */
994 return mono_thread_current ();
997 if (!mono_gc_register_thread (&domain)) {
998 g_error ("Thread %"G_GSIZE_FORMAT" calling into managed code is not registered with the GC. On UNIX, this can be fixed by #include-ing <gc.h> before <pthread.h> in the file containing the thread creation code.", mono_native_thread_id_get ());
1001 thread = create_internal_thread (error);
1002 if (!mono_error_ok (error))
1005 thread_handle = mono_thread_info_open_handle ();
1006 g_assert (thread_handle);
1008 tid=mono_native_thread_id_get ();
1010 thread->handle = thread_handle;
1011 thread->tid = MONO_NATIVE_THREAD_ID_TO_UINT (tid);
1012 thread->stack_ptr = &tid;
1014 THREAD_DEBUG (g_message ("%s: Attached thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread_handle));
1016 info = mono_thread_info_current ();
1018 thread->thread_info = info;
1019 thread->small_id = info->small_id;
1021 current_thread = new_thread_with_internal (domain, thread, error);
1022 if (!mono_error_ok (error))
1025 if (!handle_store (current_thread, force_attach)) {
1026 /* Mono is shutting down, so just wait for the end */
1028 mono_thread_info_sleep (10000, NULL);
1031 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Setting current_object_key to %p", __func__, mono_native_thread_id_get (), thread));
1033 SET_CURRENT_OBJECT (thread);
1034 mono_domain_set (domain, TRUE);
1036 thread_adjust_static_data (thread);
1038 init_root_domain_thread (thread, current_thread, error);
1039 return_val_if_nok (error, NULL);
1041 if (domain != mono_get_root_domain ())
1042 set_current_thread_for_domain (domain, thread, current_thread);
1045 if (mono_thread_attach_cb) {
1049 mono_thread_info_get_stack_bounds (&staddr, &stsize);
1052 mono_thread_attach_cb (MONO_NATIVE_THREAD_ID_TO_UINT (tid), &tid);
1054 mono_thread_attach_cb (MONO_NATIVE_THREAD_ID_TO_UINT (tid), staddr + stsize);
1057 /* Can happen when we attach the profiler helper thread in order to heapshot. */
1058 if (!info->tools_thread)
1059 // FIXME: Need a separate callback
1060 mono_profiler_thread_start (MONO_NATIVE_THREAD_ID_TO_UINT (tid));
1062 return current_thread;
1066 mono_thread_detach_internal (MonoInternalThread *thread)
1068 g_return_if_fail (thread != NULL);
1070 THREAD_DEBUG (g_message ("%s: mono_thread_detach for %p (%"G_GSIZE_FORMAT")", __func__, thread, (gsize)thread->tid));
1072 thread_cleanup (thread);
1074 SET_CURRENT_OBJECT (NULL);
1075 mono_domain_unset ();
1077 /* Don't need to CloseHandle this thread, even though we took a
1078 * reference in mono_thread_attach (), because the GC will do it
1079 * when the Thread object is finalised.
1084 mono_thread_detach (MonoThread *thread)
1087 mono_thread_detach_internal (thread->internal_thread);
1091 * mono_thread_detach_if_exiting:
1093 * Detach the current thread from the runtime if it is exiting, i.e. it is running pthread dtors.
1094 * This should be used at the end of embedding code which calls into managed code, and which
1095 * can be called from pthread dtors, like dealloc: implementations in objective-c.
1098 mono_thread_detach_if_exiting (void)
1100 if (mono_thread_info_is_exiting ()) {
1101 MonoInternalThread *thread;
1103 thread = mono_thread_internal_current ();
1105 mono_thread_detach_internal (thread);
1106 mono_thread_info_detach ();
1114 MonoInternalThread *thread = mono_thread_internal_current ();
1116 THREAD_DEBUG (g_message ("%s: mono_thread_exit for %p (%"G_GSIZE_FORMAT")", __func__, thread, (gsize)thread->tid));
1118 thread_cleanup (thread);
1119 SET_CURRENT_OBJECT (NULL);
1120 mono_domain_unset ();
1122 /* we could add a callback here for embedders to use. */
1123 if (mono_thread_get_main () && (thread == mono_thread_get_main ()->internal_thread))
1124 exit (mono_environment_exitcode_get ());
1125 mono_thread_info_exit ();
1129 ves_icall_System_Threading_Thread_ConstructInternalThread (MonoThread *this_obj)
1132 MonoInternalThread *internal;
1134 internal = create_internal_thread (&error);
1135 if (mono_error_set_pending_exception (&error))
1138 internal->state = ThreadState_Unstarted;
1140 InterlockedCompareExchangePointer ((volatile gpointer *)&this_obj->internal_thread, internal, NULL);
1144 ves_icall_System_Threading_Thread_Thread_internal (MonoThread *this_obj,
1148 StartInfo *start_info;
1149 MonoInternalThread *internal;
1152 THREAD_DEBUG (g_message("%s: Trying to start a new thread: this (%p) start (%p)", __func__, this_obj, start));
1154 if (!this_obj->internal_thread)
1155 ves_icall_System_Threading_Thread_ConstructInternalThread (this_obj);
1156 internal = this_obj->internal_thread;
1158 LOCK_THREAD (internal);
1160 if ((internal->state & ThreadState_Unstarted) == 0) {
1161 UNLOCK_THREAD (internal);
1162 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has already been started."));
1166 if ((internal->state & ThreadState_Aborted) != 0) {
1167 UNLOCK_THREAD (internal);
1170 /* This is freed in start_wrapper */
1171 start_info = g_new0 (StartInfo, 1);
1172 start_info->func = NULL;
1173 start_info->start_arg = NULL;
1174 start_info->delegate = start;
1175 start_info->obj = this_obj;
1176 g_assert (this_obj->obj.vtable->domain == mono_domain_get ());
1178 res = create_thread (this_obj, internal, start_info, FALSE, 0, &error);
1180 mono_error_cleanup (&error);
1181 UNLOCK_THREAD (internal);
1185 internal->state &= ~ThreadState_Unstarted;
1187 THREAD_DEBUG (g_message ("%s: Started thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread));
1189 UNLOCK_THREAD (internal);
1190 return internal->handle;
1194 * This is called from the finalizer of the internal thread object.
1197 ves_icall_System_Threading_InternalThread_Thread_free_internal (MonoInternalThread *this_obj, HANDLE thread)
1199 THREAD_DEBUG (g_message ("%s: Closing thread %p, handle %p", __func__, this, thread));
1202 * Since threads keep a reference to their thread object while running, by the time this function is called,
1203 * the thread has already exited/detached, i.e. thread_cleanup () has ran. The exception is during shutdown,
1204 * when thread_cleanup () can be called after this.
1207 CloseHandle (thread);
1209 if (this_obj->synch_cs) {
1210 MonoCoopMutex *synch_cs = this_obj->synch_cs;
1211 this_obj->synch_cs = NULL;
1212 mono_coop_mutex_destroy (synch_cs);
1216 if (this_obj->name) {
1217 void *name = this_obj->name;
1218 this_obj->name = NULL;
1224 ves_icall_System_Threading_Thread_Sleep_internal(gint32 ms)
1227 MonoInternalThread *thread = mono_thread_internal_current ();
1229 THREAD_DEBUG (g_message ("%s: Sleeping for %d ms", __func__, ms));
1231 if (mono_thread_current_check_pending_interrupt ())
1235 gboolean alerted = FALSE;
1237 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1239 res = mono_thread_info_sleep (ms, &alerted);
1241 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1244 MonoException* exc = mono_thread_execute_interruption ();
1246 mono_raise_exception (exc);
1258 void ves_icall_System_Threading_Thread_SpinWait_nop (void)
1263 ves_icall_System_Threading_Thread_GetDomainID (void)
1265 return mono_domain_get()->domain_id;
1269 ves_icall_System_Threading_Thread_Yield (void)
1271 return mono_thread_info_yield ();
1275 * mono_thread_get_name:
1277 * Return the name of the thread. NAME_LEN is set to the length of the name.
1278 * Return NULL if the thread has no name. The returned memory is owned by the
1282 mono_thread_get_name (MonoInternalThread *this_obj, guint32 *name_len)
1286 LOCK_THREAD (this_obj);
1288 if (!this_obj->name) {
1292 *name_len = this_obj->name_len;
1293 res = g_new (gunichar2, this_obj->name_len);
1294 memcpy (res, this_obj->name, sizeof (gunichar2) * this_obj->name_len);
1297 UNLOCK_THREAD (this_obj);
1303 * mono_thread_get_name_utf8:
1305 * Return the name of the thread in UTF-8.
1306 * Return NULL if the thread has no name.
1307 * The returned memory is owned by the caller.
1310 mono_thread_get_name_utf8 (MonoThread *thread)
1315 MonoInternalThread *internal = thread->internal_thread;
1316 if (internal == NULL)
1319 LOCK_THREAD (internal);
1321 char *tname = g_utf16_to_utf8 (internal->name, internal->name_len, NULL, NULL, NULL);
1323 UNLOCK_THREAD (internal);
1329 * mono_thread_get_managed_id:
1331 * Return the Thread.ManagedThreadId value of `thread`.
1332 * Returns -1 if `thread` is NULL.
1335 mono_thread_get_managed_id (MonoThread *thread)
1340 MonoInternalThread *internal = thread->internal_thread;
1341 if (internal == NULL)
1344 int32_t id = internal->managed_id;
1350 ves_icall_System_Threading_Thread_GetName_internal (MonoInternalThread *this_obj)
1355 mono_error_init (&error);
1357 LOCK_THREAD (this_obj);
1359 if (!this_obj->name)
1362 str = mono_string_new_utf16_checked (mono_domain_get (), this_obj->name, this_obj->name_len, &error);
1364 UNLOCK_THREAD (this_obj);
1366 if (mono_error_set_pending_exception (&error))
1373 mono_thread_set_name_internal (MonoInternalThread *this_obj, MonoString *name, gboolean permanent, MonoError *error)
1375 LOCK_THREAD (this_obj);
1377 mono_error_init (error);
1379 if ((this_obj->flags & MONO_THREAD_FLAG_NAME_SET)) {
1380 UNLOCK_THREAD (this_obj);
1382 mono_error_set_invalid_operation (error, "Thread.Name can only be set once.");
1385 if (this_obj->name) {
1386 g_free (this_obj->name);
1387 this_obj->name_len = 0;
1390 this_obj->name = g_new (gunichar2, mono_string_length (name));
1391 memcpy (this_obj->name, mono_string_chars (name), mono_string_length (name) * 2);
1392 this_obj->name_len = mono_string_length (name);
1395 this_obj->flags |= MONO_THREAD_FLAG_NAME_SET;
1398 this_obj->name = NULL;
1401 UNLOCK_THREAD (this_obj);
1403 if (this_obj->name && this_obj->tid) {
1404 char *tname = mono_string_to_utf8 (name);
1405 mono_profiler_thread_name (this_obj->tid, tname);
1406 mono_native_thread_set_name (thread_get_tid (this_obj), tname);
1412 ves_icall_System_Threading_Thread_SetName_internal (MonoInternalThread *this_obj, MonoString *name)
1415 mono_thread_set_name_internal (this_obj, name, TRUE, &error);
1416 mono_error_set_pending_exception (&error);
1420 * ves_icall_System_Threading_Thread_GetPriority_internal:
1421 * @param this_obj: The MonoInternalThread on which to operate.
1423 * Gets the priority of the given thread.
1424 * @return: The priority of the given thread.
1427 ves_icall_System_Threading_Thread_GetPriority (MonoThread *this_obj)
1430 MonoInternalThread *internal = this_obj->internal_thread;
1432 LOCK_THREAD (internal);
1433 priority = GetThreadPriority (internal->handle) + 2;
1434 UNLOCK_THREAD (internal);
1439 * ves_icall_System_Threading_Thread_SetPriority_internal:
1440 * @param this_obj: The MonoInternalThread on which to operate.
1441 * @param priority: The priority to set.
1443 * Sets the priority of the given thread.
1446 ves_icall_System_Threading_Thread_SetPriority (MonoThread *this_obj, int priority)
1448 MonoInternalThread *internal = this_obj->internal_thread;
1450 LOCK_THREAD (internal);
1451 SetThreadPriority (internal->handle, priority - 2);
1452 UNLOCK_THREAD (internal);
1455 /* If the array is already in the requested domain, we just return it,
1456 otherwise we return a copy in that domain. */
1458 byte_array_to_domain (MonoArray *arr, MonoDomain *domain, MonoError *error)
1462 mono_error_init (error);
1466 if (mono_object_domain (arr) == domain)
1469 copy = mono_array_new_checked (domain, mono_defaults.byte_class, arr->max_length, error);
1470 memmove (mono_array_addr (copy, guint8, 0), mono_array_addr (arr, guint8, 0), arr->max_length);
1475 ves_icall_System_Threading_Thread_ByteArrayToRootDomain (MonoArray *arr)
1478 MonoArray *result = byte_array_to_domain (arr, mono_get_root_domain (), &error);
1479 mono_error_set_pending_exception (&error);
1484 ves_icall_System_Threading_Thread_ByteArrayToCurrentDomain (MonoArray *arr)
1487 MonoArray *result = byte_array_to_domain (arr, mono_domain_get (), &error);
1488 mono_error_set_pending_exception (&error);
1493 mono_thread_current (void)
1496 MonoDomain *domain = mono_domain_get ();
1497 MonoInternalThread *internal = mono_thread_internal_current ();
1498 MonoThread **current_thread_ptr;
1500 g_assert (internal);
1501 current_thread_ptr = get_current_thread_ptr_for_domain (domain, internal);
1503 if (!*current_thread_ptr) {
1504 g_assert (domain != mono_get_root_domain ());
1505 *current_thread_ptr = new_thread_with_internal (domain, internal, &error);
1506 mono_error_raise_exception (&error); /* FIXME don't raise here */
1508 return *current_thread_ptr;
1511 /* Return the thread object belonging to INTERNAL in the current domain */
1513 mono_thread_current_for_thread (MonoInternalThread *internal)
1516 MonoDomain *domain = mono_domain_get ();
1517 MonoThread **current_thread_ptr;
1519 g_assert (internal);
1520 current_thread_ptr = get_current_thread_ptr_for_domain (domain, internal);
1522 if (!*current_thread_ptr) {
1523 g_assert (domain != mono_get_root_domain ());
1524 *current_thread_ptr = new_thread_with_internal (domain, internal, &error);
1525 mono_error_raise_exception (&error); /* FIXME don't raise here */
1527 return *current_thread_ptr;
1531 mono_thread_internal_current (void)
1533 MonoInternalThread *res = GET_CURRENT_OBJECT ();
1534 THREAD_DEBUG (g_message ("%s: returning %p", __func__, res));
1539 ves_icall_System_Threading_Thread_Join_internal(MonoThread *this_obj, int ms)
1541 MonoInternalThread *thread = this_obj->internal_thread;
1542 HANDLE handle = thread->handle;
1543 MonoInternalThread *cur_thread = mono_thread_internal_current ();
1546 if (mono_thread_current_check_pending_interrupt ())
1549 LOCK_THREAD (thread);
1551 if ((thread->state & ThreadState_Unstarted) != 0) {
1552 UNLOCK_THREAD (thread);
1554 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started."));
1558 UNLOCK_THREAD (thread);
1563 THREAD_DEBUG (g_message ("%s: joining thread handle %p, %d ms", __func__, handle, ms));
1565 mono_thread_set_state (cur_thread, ThreadState_WaitSleepJoin);
1568 ret=WaitForSingleObjectEx (handle, ms, TRUE);
1571 mono_thread_clr_state (cur_thread, ThreadState_WaitSleepJoin);
1573 if(ret==WAIT_OBJECT_0) {
1574 THREAD_DEBUG (g_message ("%s: join successful", __func__));
1579 THREAD_DEBUG (g_message ("%s: join failed", __func__));
1584 #define MANAGED_WAIT_FAILED 0x7fffffff
1587 map_native_wait_result_to_managed (gint32 val)
1589 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1590 return val == WAIT_FAILED ? MANAGED_WAIT_FAILED : val;
1594 mono_wait_uninterrupted (MonoInternalThread *thread, guint32 numhandles, gpointer *handles, gboolean waitall, gint32 ms, MonoError *error)
1602 mono_error_init (error);
1604 start = (ms == -1) ? 0 : mono_100ns_ticks ();
1607 if (numhandles != 1)
1608 ret = WaitForMultipleObjectsEx (numhandles, handles, waitall, wait, TRUE);
1610 ret = WaitForSingleObjectEx (handles [0], ms, TRUE);
1613 if (ret != WAIT_IO_COMPLETION)
1616 exc = mono_thread_execute_interruption ();
1618 mono_error_set_exception_instance (error, exc);
1625 /* Re-calculate ms according to the time passed */
1626 diff_ms = (gint32)((mono_100ns_ticks () - start) / 10000);
1627 if (diff_ms >= ms) {
1631 wait = ms - diff_ms;
1637 gint32 ves_icall_System_Threading_WaitHandle_WaitAll_internal(MonoArray *mono_handles, gint32 ms)
1644 MonoObject *waitHandle;
1645 MonoInternalThread *thread = mono_thread_internal_current ();
1647 /* Do this WaitSleepJoin check before creating objects */
1648 if (mono_thread_current_check_pending_interrupt ())
1649 return map_native_wait_result_to_managed (WAIT_FAILED);
1651 /* We fail in managed if the array has more than 64 elements */
1652 numhandles = (guint32)mono_array_length(mono_handles);
1653 handles = g_new0(HANDLE, numhandles);
1655 for(i = 0; i < numhandles; i++) {
1656 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
1657 handles [i] = mono_wait_handle_get_handle ((MonoWaitHandle *) waitHandle);
1664 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1666 ret = mono_wait_uninterrupted (thread, numhandles, handles, TRUE, ms, &error);
1668 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1672 mono_error_set_pending_exception (&error);
1674 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1675 return map_native_wait_result_to_managed (ret);
1678 gint32 ves_icall_System_Threading_WaitHandle_WaitAny_internal(MonoArray *mono_handles, gint32 ms)
1681 HANDLE handles [MAXIMUM_WAIT_OBJECTS];
1682 uintptr_t numhandles;
1685 MonoObject *waitHandle;
1686 MonoInternalThread *thread = mono_thread_internal_current ();
1688 /* Do this WaitSleepJoin check before creating objects */
1689 if (mono_thread_current_check_pending_interrupt ())
1690 return map_native_wait_result_to_managed (WAIT_FAILED);
1692 numhandles = mono_array_length(mono_handles);
1693 if (numhandles > MAXIMUM_WAIT_OBJECTS)
1694 return map_native_wait_result_to_managed (WAIT_FAILED);
1696 for(i = 0; i < numhandles; i++) {
1697 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
1698 handles [i] = mono_wait_handle_get_handle ((MonoWaitHandle *) waitHandle);
1705 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1707 ret = mono_wait_uninterrupted (thread, numhandles, handles, FALSE, ms, &error);
1709 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1711 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") returning %d", __func__, mono_native_thread_id_get (), ret));
1713 mono_error_set_pending_exception (&error);
1715 * These need to be here. See MSDN dos on WaitForMultipleObjects.
1717 if (ret >= WAIT_OBJECT_0 && ret <= WAIT_OBJECT_0 + numhandles - 1) {
1718 return map_native_wait_result_to_managed (ret - WAIT_OBJECT_0);
1720 else if (ret >= WAIT_ABANDONED_0 && ret <= WAIT_ABANDONED_0 + numhandles - 1) {
1721 return map_native_wait_result_to_managed (ret - WAIT_ABANDONED_0);
1724 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1725 return map_native_wait_result_to_managed (ret);
1729 gint32 ves_icall_System_Threading_WaitHandle_WaitOne_internal(HANDLE handle, gint32 ms)
1733 MonoInternalThread *thread = mono_thread_internal_current ();
1735 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") waiting for %p, %d ms", __func__, mono_native_thread_id_get (), handle, ms));
1741 if (mono_thread_current_check_pending_interrupt ())
1742 return map_native_wait_result_to_managed (WAIT_FAILED);
1744 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1746 ret = mono_wait_uninterrupted (thread, 1, &handle, FALSE, ms, &error);
1748 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1750 mono_error_set_pending_exception (&error);
1751 return map_native_wait_result_to_managed (ret);
1755 ves_icall_System_Threading_WaitHandle_SignalAndWait_Internal (HANDLE toSignal, HANDLE toWait, gint32 ms)
1758 MonoInternalThread *thread = mono_thread_internal_current ();
1763 if (mono_thread_current_check_pending_interrupt ())
1764 return map_native_wait_result_to_managed (WAIT_FAILED);
1766 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1769 ret = SignalObjectAndWait (toSignal, toWait, ms, TRUE);
1772 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1774 return map_native_wait_result_to_managed (ret);
1777 HANDLE ves_icall_System_Threading_Mutex_CreateMutex_internal (MonoBoolean owned, MonoString *name, MonoBoolean *created)
1784 mutex = CreateMutex (NULL, owned, NULL);
1786 mutex = CreateMutex (NULL, owned, mono_string_chars (name));
1788 if (GetLastError () == ERROR_ALREADY_EXISTS) {
1796 MonoBoolean ves_icall_System_Threading_Mutex_ReleaseMutex_internal (HANDLE handle ) {
1797 return(ReleaseMutex (handle));
1800 HANDLE ves_icall_System_Threading_Mutex_OpenMutex_internal (MonoString *name,
1806 *error = ERROR_SUCCESS;
1808 ret = OpenMutex (rights, FALSE, mono_string_chars (name));
1810 *error = GetLastError ();
1817 HANDLE ves_icall_System_Threading_Semaphore_CreateSemaphore_internal (gint32 initialCount, gint32 maximumCount, MonoString *name, MonoBoolean *created)
1824 sem = CreateSemaphore (NULL, initialCount, maximumCount, NULL);
1826 sem = CreateSemaphore (NULL, initialCount, maximumCount,
1827 mono_string_chars (name));
1829 if (GetLastError () == ERROR_ALREADY_EXISTS) {
1837 gint32 ves_icall_System_Threading_Semaphore_ReleaseSemaphore_internal (HANDLE handle, gint32 releaseCount, MonoBoolean *fail)
1841 *fail = !ReleaseSemaphore (handle, releaseCount, &prevcount);
1846 HANDLE ves_icall_System_Threading_Semaphore_OpenSemaphore_internal (MonoString *name, gint32 rights, gint32 *error)
1850 *error = ERROR_SUCCESS;
1852 ret = OpenSemaphore (rights, FALSE, mono_string_chars (name));
1854 *error = GetLastError ();
1860 HANDLE ves_icall_System_Threading_Events_CreateEvent_internal (MonoBoolean manual, MonoBoolean initial, MonoString *name, MonoBoolean *created)
1867 event = CreateEvent (NULL, manual, initial, NULL);
1869 event = CreateEvent (NULL, manual, initial,
1870 mono_string_chars (name));
1872 if (GetLastError () == ERROR_ALREADY_EXISTS) {
1880 gboolean ves_icall_System_Threading_Events_SetEvent_internal (HANDLE handle) {
1881 return (SetEvent(handle));
1884 gboolean ves_icall_System_Threading_Events_ResetEvent_internal (HANDLE handle) {
1885 return (ResetEvent(handle));
1889 ves_icall_System_Threading_Events_CloseEvent_internal (HANDLE handle) {
1890 CloseHandle (handle);
1893 HANDLE ves_icall_System_Threading_Events_OpenEvent_internal (MonoString *name,
1899 *error = ERROR_SUCCESS;
1901 ret = OpenEvent (rights, FALSE, mono_string_chars (name));
1903 *error = GetLastError ();
1909 gint32 ves_icall_System_Threading_Interlocked_Increment_Int (gint32 *location)
1911 return InterlockedIncrement (location);
1914 gint64 ves_icall_System_Threading_Interlocked_Increment_Long (gint64 *location)
1916 #if SIZEOF_VOID_P == 4
1917 if (G_UNLIKELY ((size_t)location & 0x7)) {
1919 mono_interlocked_lock ();
1922 mono_interlocked_unlock ();
1926 return InterlockedIncrement64 (location);
1929 gint32 ves_icall_System_Threading_Interlocked_Decrement_Int (gint32 *location)
1931 return InterlockedDecrement(location);
1934 gint64 ves_icall_System_Threading_Interlocked_Decrement_Long (gint64 * location)
1936 #if SIZEOF_VOID_P == 4
1937 if (G_UNLIKELY ((size_t)location & 0x7)) {
1939 mono_interlocked_lock ();
1942 mono_interlocked_unlock ();
1946 return InterlockedDecrement64 (location);
1949 gint32 ves_icall_System_Threading_Interlocked_Exchange_Int (gint32 *location, gint32 value)
1951 return InterlockedExchange(location, value);
1954 MonoObject * ves_icall_System_Threading_Interlocked_Exchange_Object (MonoObject **location, MonoObject *value)
1957 res = (MonoObject *) InterlockedExchangePointer((gpointer *) location, value);
1958 mono_gc_wbarrier_generic_nostore (location);
1962 gpointer ves_icall_System_Threading_Interlocked_Exchange_IntPtr (gpointer *location, gpointer value)
1964 return InterlockedExchangePointer(location, value);
1967 gfloat ves_icall_System_Threading_Interlocked_Exchange_Single (gfloat *location, gfloat value)
1969 IntFloatUnion val, ret;
1972 ret.ival = InterlockedExchange((gint32 *) location, val.ival);
1978 ves_icall_System_Threading_Interlocked_Exchange_Long (gint64 *location, gint64 value)
1980 #if SIZEOF_VOID_P == 4
1981 if (G_UNLIKELY ((size_t)location & 0x7)) {
1983 mono_interlocked_lock ();
1986 mono_interlocked_unlock ();
1990 return InterlockedExchange64 (location, value);
1994 ves_icall_System_Threading_Interlocked_Exchange_Double (gdouble *location, gdouble value)
1996 LongDoubleUnion val, ret;
1999 ret.ival = (gint64)InterlockedExchange64((gint64 *) location, val.ival);
2004 gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int(gint32 *location, gint32 value, gint32 comparand)
2006 return InterlockedCompareExchange(location, value, comparand);
2009 gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int_Success(gint32 *location, gint32 value, gint32 comparand, MonoBoolean *success)
2011 gint32 r = InterlockedCompareExchange(location, value, comparand);
2012 *success = r == comparand;
2016 MonoObject * ves_icall_System_Threading_Interlocked_CompareExchange_Object (MonoObject **location, MonoObject *value, MonoObject *comparand)
2019 res = (MonoObject *) InterlockedCompareExchangePointer((gpointer *) location, value, comparand);
2020 mono_gc_wbarrier_generic_nostore (location);
2024 gpointer ves_icall_System_Threading_Interlocked_CompareExchange_IntPtr(gpointer *location, gpointer value, gpointer comparand)
2026 return InterlockedCompareExchangePointer(location, value, comparand);
2029 gfloat ves_icall_System_Threading_Interlocked_CompareExchange_Single (gfloat *location, gfloat value, gfloat comparand)
2031 IntFloatUnion val, ret, cmp;
2034 cmp.fval = comparand;
2035 ret.ival = InterlockedCompareExchange((gint32 *) location, val.ival, cmp.ival);
2041 ves_icall_System_Threading_Interlocked_CompareExchange_Double (gdouble *location, gdouble value, gdouble comparand)
2043 #if SIZEOF_VOID_P == 8
2044 LongDoubleUnion val, comp, ret;
2047 comp.fval = comparand;
2048 ret.ival = (gint64)InterlockedCompareExchangePointer((gpointer *) location, (gpointer)val.ival, (gpointer)comp.ival);
2054 mono_interlocked_lock ();
2056 if (old == comparand)
2058 mono_interlocked_unlock ();
2065 ves_icall_System_Threading_Interlocked_CompareExchange_Long (gint64 *location, gint64 value, gint64 comparand)
2067 #if SIZEOF_VOID_P == 4
2068 if (G_UNLIKELY ((size_t)location & 0x7)) {
2070 mono_interlocked_lock ();
2072 if (old == comparand)
2074 mono_interlocked_unlock ();
2078 return InterlockedCompareExchange64 (location, value, comparand);
2082 ves_icall_System_Threading_Interlocked_CompareExchange_T (MonoObject **location, MonoObject *value, MonoObject *comparand)
2085 res = (MonoObject *)InterlockedCompareExchangePointer ((volatile gpointer *)location, value, comparand);
2086 mono_gc_wbarrier_generic_nostore (location);
2091 ves_icall_System_Threading_Interlocked_Exchange_T (MonoObject **location, MonoObject *value)
2094 MONO_CHECK_NULL (location, NULL);
2095 res = (MonoObject *)InterlockedExchangePointer ((volatile gpointer *)location, value);
2096 mono_gc_wbarrier_generic_nostore (location);
2101 ves_icall_System_Threading_Interlocked_Add_Int (gint32 *location, gint32 value)
2103 return InterlockedAdd (location, value);
2107 ves_icall_System_Threading_Interlocked_Add_Long (gint64 *location, gint64 value)
2109 #if SIZEOF_VOID_P == 4
2110 if (G_UNLIKELY ((size_t)location & 0x7)) {
2112 mono_interlocked_lock ();
2115 mono_interlocked_unlock ();
2119 return InterlockedAdd64 (location, value);
2123 ves_icall_System_Threading_Interlocked_Read_Long (gint64 *location)
2125 #if SIZEOF_VOID_P == 4
2126 if (G_UNLIKELY ((size_t)location & 0x7)) {
2128 mono_interlocked_lock ();
2130 mono_interlocked_unlock ();
2134 return InterlockedRead64 (location);
2138 ves_icall_System_Threading_Thread_MemoryBarrier (void)
2140 mono_memory_barrier ();
2144 ves_icall_System_Threading_Thread_ClrState (MonoInternalThread* this_obj, guint32 state)
2146 mono_thread_clr_state (this_obj, (MonoThreadState)state);
2148 if (state & ThreadState_Background) {
2149 /* If the thread changes the background mode, the main thread has to
2150 * be notified, since it has to rebuild the list of threads to
2153 SetEvent (background_change_event);
2158 ves_icall_System_Threading_Thread_SetState (MonoInternalThread* this_obj, guint32 state)
2160 mono_thread_set_state (this_obj, (MonoThreadState)state);
2162 if (state & ThreadState_Background) {
2163 /* If the thread changes the background mode, the main thread has to
2164 * be notified, since it has to rebuild the list of threads to
2167 SetEvent (background_change_event);
2172 ves_icall_System_Threading_Thread_GetState (MonoInternalThread* this_obj)
2176 LOCK_THREAD (this_obj);
2178 state = this_obj->state;
2180 UNLOCK_THREAD (this_obj);
2185 void ves_icall_System_Threading_Thread_Interrupt_internal (MonoThread *this_obj)
2187 MonoInternalThread *current;
2189 MonoInternalThread *thread = this_obj->internal_thread;
2191 LOCK_THREAD (thread);
2193 current = mono_thread_internal_current ();
2195 thread->thread_interrupt_requested = TRUE;
2196 throw_ = current != thread && (thread->state & ThreadState_WaitSleepJoin);
2198 UNLOCK_THREAD (thread);
2201 async_abort_internal (thread, FALSE);
2206 * mono_thread_current_check_pending_interrupt:
2208 * Checks if there's a interruption request and set the pending exception if so.
2210 * @returns true if a pending exception was set
2213 mono_thread_current_check_pending_interrupt (void)
2215 MonoInternalThread *thread = mono_thread_internal_current ();
2216 gboolean throw_ = FALSE;
2218 LOCK_THREAD (thread);
2220 if (thread->thread_interrupt_requested) {
2222 thread->thread_interrupt_requested = FALSE;
2225 UNLOCK_THREAD (thread);
2228 mono_set_pending_exception (mono_get_exception_thread_interrupted ());
2233 request_thread_abort (MonoInternalThread *thread, MonoObject *state)
2235 LOCK_THREAD (thread);
2237 if ((thread->state & ThreadState_AbortRequested) != 0 ||
2238 (thread->state & ThreadState_StopRequested) != 0 ||
2239 (thread->state & ThreadState_Stopped) != 0)
2241 UNLOCK_THREAD (thread);
2245 if ((thread->state & ThreadState_Unstarted) != 0) {
2246 thread->state |= ThreadState_Aborted;
2247 UNLOCK_THREAD (thread);
2251 thread->state |= ThreadState_AbortRequested;
2252 if (thread->abort_state_handle)
2253 mono_gchandle_free (thread->abort_state_handle);
2255 thread->abort_state_handle = mono_gchandle_new (state, FALSE);
2256 g_assert (thread->abort_state_handle);
2258 thread->abort_state_handle = 0;
2260 thread->abort_exc = NULL;
2262 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Abort requested for %p (%"G_GSIZE_FORMAT")", __func__, mono_native_thread_id_get (), thread, (gsize)thread->tid));
2264 /* During shutdown, we can't wait for other threads */
2266 /* Make sure the thread is awake */
2267 mono_thread_resume (thread);
2269 UNLOCK_THREAD (thread);
2274 ves_icall_System_Threading_Thread_Abort (MonoInternalThread *thread, MonoObject *state)
2276 if (!request_thread_abort (thread, state))
2279 if (thread == mono_thread_internal_current ()) {
2281 self_abort_internal (&error);
2282 mono_error_set_pending_exception (&error);
2284 async_abort_internal (thread, TRUE);
2289 * mono_thread_internal_abort:
2291 * Request thread @thread to be aborted.
2293 * @thread MUST NOT be the current thread.
2296 mono_thread_internal_abort (MonoInternalThread *thread)
2298 g_assert (thread != mono_thread_internal_current ());
2300 if (!request_thread_abort (thread, NULL))
2302 async_abort_internal (thread, TRUE);
2306 ves_icall_System_Threading_Thread_ResetAbort (MonoThread *this_obj)
2308 MonoInternalThread *thread = mono_thread_internal_current ();
2309 gboolean was_aborting;
2311 LOCK_THREAD (thread);
2312 was_aborting = thread->state & ThreadState_AbortRequested;
2313 thread->state &= ~ThreadState_AbortRequested;
2314 UNLOCK_THREAD (thread);
2316 if (!was_aborting) {
2317 const char *msg = "Unable to reset abort because no abort was requested";
2318 mono_set_pending_exception (mono_get_exception_thread_state (msg));
2321 thread->abort_exc = NULL;
2322 if (thread->abort_state_handle) {
2323 mono_gchandle_free (thread->abort_state_handle);
2324 /* This is actually not necessary - the handle
2325 only counts if the exception is set */
2326 thread->abort_state_handle = 0;
2331 mono_thread_internal_reset_abort (MonoInternalThread *thread)
2333 LOCK_THREAD (thread);
2335 thread->state &= ~ThreadState_AbortRequested;
2337 if (thread->abort_exc) {
2338 thread->abort_exc = NULL;
2339 if (thread->abort_state_handle) {
2340 mono_gchandle_free (thread->abort_state_handle);
2341 /* This is actually not necessary - the handle
2342 only counts if the exception is set */
2343 thread->abort_state_handle = 0;
2347 UNLOCK_THREAD (thread);
2351 ves_icall_System_Threading_Thread_GetAbortExceptionState (MonoThread *this_obj)
2354 MonoInternalThread *thread = this_obj->internal_thread;
2355 MonoObject *state, *deserialized = NULL;
2358 if (!thread->abort_state_handle)
2361 state = mono_gchandle_get_target (thread->abort_state_handle);
2364 domain = mono_domain_get ();
2365 if (mono_object_domain (state) == domain)
2368 deserialized = mono_object_xdomain_representation (state, domain, &error);
2370 if (!deserialized) {
2371 MonoException *invalid_op_exc = mono_get_exception_invalid_operation ("Thread.ExceptionState cannot access an ExceptionState from a different AppDomain");
2372 if (!is_ok (&error)) {
2373 MonoObject *exc = (MonoObject*)mono_error_convert_to_exception (&error);
2374 MONO_OBJECT_SETREF (invalid_op_exc, inner_ex, exc);
2376 mono_set_pending_exception (invalid_op_exc);
2380 return deserialized;
2384 mono_thread_suspend (MonoInternalThread *thread)
2386 LOCK_THREAD (thread);
2388 if ((thread->state & ThreadState_Unstarted) != 0 ||
2389 (thread->state & ThreadState_Aborted) != 0 ||
2390 (thread->state & ThreadState_Stopped) != 0)
2392 UNLOCK_THREAD (thread);
2396 if ((thread->state & ThreadState_Suspended) != 0 ||
2397 (thread->state & ThreadState_SuspendRequested) != 0 ||
2398 (thread->state & ThreadState_StopRequested) != 0)
2400 UNLOCK_THREAD (thread);
2404 thread->state |= ThreadState_SuspendRequested;
2406 if (thread == mono_thread_internal_current ()) {
2407 /* calls UNLOCK_THREAD (thread) */
2408 self_suspend_internal ();
2410 /* calls UNLOCK_THREAD (thread) */
2411 async_suspend_internal (thread, FALSE);
2418 ves_icall_System_Threading_Thread_Suspend (MonoThread *this_obj)
2420 if (!mono_thread_suspend (this_obj->internal_thread)) {
2421 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2426 /* LOCKING: LOCK_THREAD(thread) must be held */
2428 mono_thread_resume (MonoInternalThread *thread)
2430 if ((thread->state & ThreadState_SuspendRequested) != 0) {
2431 thread->state &= ~ThreadState_SuspendRequested;
2435 if ((thread->state & ThreadState_Suspended) == 0 ||
2436 (thread->state & ThreadState_Unstarted) != 0 ||
2437 (thread->state & ThreadState_Aborted) != 0 ||
2438 (thread->state & ThreadState_Stopped) != 0)
2443 UNLOCK_THREAD (thread);
2445 /* Awake the thread */
2446 if (!mono_thread_info_resume (thread_get_tid (thread)))
2449 LOCK_THREAD (thread);
2451 thread->state &= ~ThreadState_Suspended;
2457 ves_icall_System_Threading_Thread_Resume (MonoThread *thread)
2459 if (!thread->internal_thread) {
2460 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2462 LOCK_THREAD (thread->internal_thread);
2463 if (!mono_thread_resume (thread->internal_thread))
2464 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2465 UNLOCK_THREAD (thread->internal_thread);
2470 mono_threads_is_critical_method (MonoMethod *method)
2472 switch (method->wrapper_type) {
2473 case MONO_WRAPPER_RUNTIME_INVOKE:
2474 case MONO_WRAPPER_XDOMAIN_INVOKE:
2475 case MONO_WRAPPER_XDOMAIN_DISPATCH:
2482 find_wrapper (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
2487 if (mono_threads_is_critical_method (m)) {
2488 *((gboolean*)data) = TRUE;
2495 is_running_protected_wrapper (void)
2497 gboolean found = FALSE;
2498 mono_stack_walk (find_wrapper, &found);
2503 request_thread_stop (MonoInternalThread *thread)
2505 LOCK_THREAD (thread);
2507 if ((thread->state & ThreadState_StopRequested) != 0 ||
2508 (thread->state & ThreadState_Stopped) != 0)
2510 UNLOCK_THREAD (thread);
2514 /* Make sure the thread is awake */
2515 mono_thread_resume (thread);
2517 thread->state |= ThreadState_StopRequested;
2518 thread->state &= ~ThreadState_AbortRequested;
2520 UNLOCK_THREAD (thread);
2525 * mono_thread_internal_stop:
2527 * Request thread @thread to stop.
2529 * @thread MUST NOT be the current thread.
2532 mono_thread_internal_stop (MonoInternalThread *thread)
2534 g_assert (thread != mono_thread_internal_current ());
2536 if (!request_thread_stop (thread))
2539 async_abort_internal (thread, TRUE);
2542 void mono_thread_stop (MonoThread *thread)
2544 MonoInternalThread *internal = thread->internal_thread;
2546 if (!request_thread_stop (internal))
2549 if (internal == mono_thread_internal_current ()) {
2551 self_abort_internal (&error);
2553 This function is part of the embeding API and has no way to return the exception
2554 to be thrown. So what we do is keep the old behavior and raise the exception.
2556 mono_error_raise_exception (&error);
2558 async_abort_internal (internal, TRUE);
2563 ves_icall_System_Threading_Thread_VolatileRead1 (void *ptr)
2565 gint8 tmp = *(volatile gint8 *)ptr;
2566 mono_memory_barrier ();
2571 ves_icall_System_Threading_Thread_VolatileRead2 (void *ptr)
2573 gint16 tmp = *(volatile gint16 *)ptr;
2574 mono_memory_barrier ();
2579 ves_icall_System_Threading_Thread_VolatileRead4 (void *ptr)
2581 gint32 tmp = *(volatile gint32 *)ptr;
2582 mono_memory_barrier ();
2587 ves_icall_System_Threading_Thread_VolatileRead8 (void *ptr)
2589 gint64 tmp = *(volatile gint64 *)ptr;
2590 mono_memory_barrier ();
2595 ves_icall_System_Threading_Thread_VolatileReadIntPtr (void *ptr)
2597 volatile void *tmp = *(volatile void **)ptr;
2598 mono_memory_barrier ();
2599 return (void *) tmp;
2603 ves_icall_System_Threading_Thread_VolatileReadObject (void *ptr)
2605 volatile MonoObject *tmp = *(volatile MonoObject **)ptr;
2606 mono_memory_barrier ();
2607 return (MonoObject *) tmp;
2611 ves_icall_System_Threading_Thread_VolatileReadDouble (void *ptr)
2613 double tmp = *(volatile double *)ptr;
2614 mono_memory_barrier ();
2619 ves_icall_System_Threading_Thread_VolatileReadFloat (void *ptr)
2621 float tmp = *(volatile float *)ptr;
2622 mono_memory_barrier ();
2627 ves_icall_System_Threading_Volatile_Read1 (void *ptr)
2629 return InterlockedRead8 ((volatile gint8 *)ptr);
2633 ves_icall_System_Threading_Volatile_Read2 (void *ptr)
2635 return InterlockedRead16 ((volatile gint16 *)ptr);
2639 ves_icall_System_Threading_Volatile_Read4 (void *ptr)
2641 return InterlockedRead ((volatile gint32 *)ptr);
2645 ves_icall_System_Threading_Volatile_Read8 (void *ptr)
2647 #if SIZEOF_VOID_P == 4
2648 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2650 mono_interlocked_lock ();
2651 val = *(gint64*)ptr;
2652 mono_interlocked_unlock ();
2656 return InterlockedRead64 ((volatile gint64 *)ptr);
2660 ves_icall_System_Threading_Volatile_ReadIntPtr (void *ptr)
2662 return InterlockedReadPointer ((volatile gpointer *)ptr);
2666 ves_icall_System_Threading_Volatile_ReadDouble (void *ptr)
2670 #if SIZEOF_VOID_P == 4
2671 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2673 mono_interlocked_lock ();
2674 val = *(double*)ptr;
2675 mono_interlocked_unlock ();
2680 u.ival = InterlockedRead64 ((volatile gint64 *)ptr);
2686 ves_icall_System_Threading_Volatile_ReadFloat (void *ptr)
2690 u.ival = InterlockedRead ((volatile gint32 *)ptr);
2696 ves_icall_System_Threading_Volatile_Read_T (void *ptr)
2698 return (MonoObject *)InterlockedReadPointer ((volatile gpointer *)ptr);
2702 ves_icall_System_Threading_Thread_VolatileWrite1 (void *ptr, gint8 value)
2704 mono_memory_barrier ();
2705 *(volatile gint8 *)ptr = value;
2709 ves_icall_System_Threading_Thread_VolatileWrite2 (void *ptr, gint16 value)
2711 mono_memory_barrier ();
2712 *(volatile gint16 *)ptr = value;
2716 ves_icall_System_Threading_Thread_VolatileWrite4 (void *ptr, gint32 value)
2718 mono_memory_barrier ();
2719 *(volatile gint32 *)ptr = value;
2723 ves_icall_System_Threading_Thread_VolatileWrite8 (void *ptr, gint64 value)
2725 mono_memory_barrier ();
2726 *(volatile gint64 *)ptr = value;
2730 ves_icall_System_Threading_Thread_VolatileWriteIntPtr (void *ptr, void *value)
2732 mono_memory_barrier ();
2733 *(volatile void **)ptr = value;
2737 ves_icall_System_Threading_Thread_VolatileWriteObject (void *ptr, MonoObject *value)
2739 mono_memory_barrier ();
2740 mono_gc_wbarrier_generic_store (ptr, value);
2744 ves_icall_System_Threading_Thread_VolatileWriteDouble (void *ptr, double value)
2746 mono_memory_barrier ();
2747 *(volatile double *)ptr = value;
2751 ves_icall_System_Threading_Thread_VolatileWriteFloat (void *ptr, float value)
2753 mono_memory_barrier ();
2754 *(volatile float *)ptr = value;
2758 ves_icall_System_Threading_Volatile_Write1 (void *ptr, gint8 value)
2760 InterlockedWrite8 ((volatile gint8 *)ptr, value);
2764 ves_icall_System_Threading_Volatile_Write2 (void *ptr, gint16 value)
2766 InterlockedWrite16 ((volatile gint16 *)ptr, value);
2770 ves_icall_System_Threading_Volatile_Write4 (void *ptr, gint32 value)
2772 InterlockedWrite ((volatile gint32 *)ptr, value);
2776 ves_icall_System_Threading_Volatile_Write8 (void *ptr, gint64 value)
2778 #if SIZEOF_VOID_P == 4
2779 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2780 mono_interlocked_lock ();
2781 *(gint64*)ptr = value;
2782 mono_interlocked_unlock ();
2787 InterlockedWrite64 ((volatile gint64 *)ptr, value);
2791 ves_icall_System_Threading_Volatile_WriteIntPtr (void *ptr, void *value)
2793 InterlockedWritePointer ((volatile gpointer *)ptr, value);
2797 ves_icall_System_Threading_Volatile_WriteDouble (void *ptr, double value)
2801 #if SIZEOF_VOID_P == 4
2802 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2803 mono_interlocked_lock ();
2804 *(double*)ptr = value;
2805 mono_interlocked_unlock ();
2812 InterlockedWrite64 ((volatile gint64 *)ptr, u.ival);
2816 ves_icall_System_Threading_Volatile_WriteFloat (void *ptr, float value)
2822 InterlockedWrite ((volatile gint32 *)ptr, u.ival);
2826 ves_icall_System_Threading_Volatile_Write_T (void *ptr, MonoObject *value)
2828 mono_gc_wbarrier_generic_store_atomic (ptr, value);
2832 free_context (void *user_data)
2834 ContextStaticData *data = user_data;
2836 mono_threads_lock ();
2839 * There is no guarantee that, by the point this reference queue callback
2840 * has been invoked, the GC handle associated with the object will fail to
2841 * resolve as one might expect. So if we don't free and remove the GC
2842 * handle here, free_context_static_data_helper () could end up resolving
2843 * a GC handle to an actually-dead context which would contain a pointer
2844 * to an already-freed static data segment, resulting in a crash when
2847 g_hash_table_remove (contexts, GUINT_TO_POINTER (data->gc_handle));
2849 mono_threads_unlock ();
2851 mono_gchandle_free (data->gc_handle);
2852 mono_free_static_data (data->static_data);
2857 ves_icall_System_Runtime_Remoting_Contexts_Context_RegisterContext (MonoAppContext *ctx)
2859 mono_threads_lock ();
2861 //g_print ("Registering context %d in domain %d\n", ctx->context_id, ctx->domain_id);
2864 contexts = g_hash_table_new (NULL, NULL);
2867 context_queue = mono_gc_reference_queue_new (free_context);
2869 gpointer gch = GUINT_TO_POINTER (mono_gchandle_new_weakref (&ctx->obj, FALSE));
2870 g_hash_table_insert (contexts, gch, gch);
2873 * We use this intermediate structure to contain a duplicate pointer to
2874 * the static data because we can't rely on being able to resolve the GC
2875 * handle in the reference queue callback.
2877 ContextStaticData *data = g_new0 (ContextStaticData, 1);
2878 data->gc_handle = GPOINTER_TO_UINT (gch);
2881 context_adjust_static_data (ctx);
2882 mono_gc_reference_queue_add (context_queue, &ctx->obj, data);
2884 mono_threads_unlock ();
2886 mono_profiler_context_loaded (ctx);
2890 ves_icall_System_Runtime_Remoting_Contexts_Context_ReleaseContext (MonoAppContext *ctx)
2893 * NOTE: Since finalizers are unreliable for the purposes of ensuring
2894 * cleanup in exceptional circumstances, we don't actually do any
2895 * cleanup work here. We instead do this via a reference queue.
2898 //g_print ("Releasing context %d in domain %d\n", ctx->context_id, ctx->domain_id);
2900 mono_profiler_context_unloaded (ctx);
2904 mono_thread_init_tls (void)
2906 MONO_FAST_TLS_INIT (tls_current_object);
2907 mono_native_tls_alloc (¤t_object_key, NULL);
2910 void mono_thread_init (MonoThreadStartCB start_cb,
2911 MonoThreadAttachCB attach_cb)
2913 mono_coop_mutex_init_recursive (&threads_mutex);
2915 mono_os_mutex_init_recursive(&interlocked_mutex);
2916 mono_os_mutex_init_recursive(&joinable_threads_mutex);
2918 background_change_event = CreateEvent (NULL, TRUE, FALSE, NULL);
2919 g_assert(background_change_event != NULL);
2921 mono_init_static_data_info (&thread_static_info);
2922 mono_init_static_data_info (&context_static_info);
2924 THREAD_DEBUG (g_message ("%s: Allocated current_object_key %d", __func__, current_object_key));
2926 mono_thread_start_cb = start_cb;
2927 mono_thread_attach_cb = attach_cb;
2929 /* Get a pseudo handle to the current process. This is just a
2930 * kludge so that wapi can build a process handle if needed.
2931 * As a pseudo handle is returned, we don't need to clean
2934 GetCurrentProcess ();
2937 void mono_thread_cleanup (void)
2939 #if !defined(HOST_WIN32) && !defined(RUN_IN_SUBTHREAD)
2940 MonoThreadInfo *info;
2942 /* The main thread must abandon any held mutexes (particularly
2943 * important for named mutexes as they are shared across
2944 * processes, see bug 74680.) This will happen when the
2945 * thread exits, but if it's not running in a subthread it
2946 * won't exit in time.
2948 info = mono_thread_info_current ();
2949 wapi_thread_handle_set_exited (info->handle, mono_environment_exitcode_get ());
2953 /* This stuff needs more testing, it seems one of these
2954 * critical sections can be locked when mono_thread_cleanup is
2957 mono_coop_mutex_destroy (&threads_mutex);
2958 mono_os_mutex_destroy (&interlocked_mutex);
2959 mono_os_mutex_destroy (&delayed_free_table_mutex);
2960 mono_os_mutex_destroy (&small_id_mutex);
2961 CloseHandle (background_change_event);
2964 mono_native_tls_free (current_object_key);
2968 mono_threads_install_cleanup (MonoThreadCleanupFunc func)
2970 mono_thread_cleanup_fn = func;
2974 mono_thread_set_manage_callback (MonoThread *thread, MonoThreadManageCallback func)
2976 thread->internal_thread->manage_callback = func;
2980 static void print_tids (gpointer key, gpointer value, gpointer user)
2982 /* GPOINTER_TO_UINT breaks horribly if sizeof(void *) >
2983 * sizeof(uint) and a cast to uint would overflow
2985 /* Older versions of glib don't have G_GSIZE_FORMAT, so just
2986 * print this as a pointer.
2988 g_message ("Waiting for: %p", key);
2993 HANDLE handles[MAXIMUM_WAIT_OBJECTS];
2994 MonoInternalThread *threads[MAXIMUM_WAIT_OBJECTS];
2998 static void wait_for_tids (struct wait_data *wait, guint32 timeout)
3002 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
3005 ret=WaitForMultipleObjectsEx(wait->num, wait->handles, TRUE, timeout, TRUE);
3008 if(ret==WAIT_FAILED) {
3009 /* See the comment in build_wait_tids() */
3010 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
3014 for(i=0; i<wait->num; i++)
3015 CloseHandle (wait->handles[i]);
3017 if (ret == WAIT_TIMEOUT)
3020 for(i=0; i<wait->num; i++) {
3021 gsize tid = wait->threads[i]->tid;
3024 * On !win32, when the thread handle becomes signalled, it just means the thread has exited user code,
3025 * it can still run io-layer etc. code. So wait for it to really exit.
3026 * FIXME: This won't join threads which are not in the joinable_hash yet.
3028 mono_thread_join ((gpointer)tid);
3030 mono_threads_lock ();
3031 if(mono_g_hash_table_lookup (threads, (gpointer)tid)!=NULL) {
3032 /* This thread must have been killed, because
3033 * it hasn't cleaned itself up. (It's just
3034 * possible that the thread exited before the
3035 * parent thread had a chance to store the
3036 * handle, and now there is another pointer to
3037 * the already-exited thread stored. In this
3038 * case, we'll just get two
3039 * mono_profiler_thread_end() calls for the
3043 mono_threads_unlock ();
3044 THREAD_DEBUG (g_message ("%s: cleaning up after thread %p (%"G_GSIZE_FORMAT")", __func__, wait->threads[i], tid));
3045 thread_cleanup (wait->threads[i]);
3047 mono_threads_unlock ();
3052 static void wait_for_tids_or_state_change (struct wait_data *wait, guint32 timeout)
3054 guint32 i, ret, count;
3056 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
3058 /* Add the thread state change event, so it wakes up if a thread changes
3059 * to background mode.
3062 if (count < MAXIMUM_WAIT_OBJECTS) {
3063 wait->handles [count] = background_change_event;
3068 ret=WaitForMultipleObjectsEx (count, wait->handles, FALSE, timeout, TRUE);
3071 if(ret==WAIT_FAILED) {
3072 /* See the comment in build_wait_tids() */
3073 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
3077 for(i=0; i<wait->num; i++)
3078 CloseHandle (wait->handles[i]);
3080 if (ret == WAIT_TIMEOUT)
3083 if (ret < wait->num) {
3084 gsize tid = wait->threads[ret]->tid;
3085 mono_threads_lock ();
3086 if (mono_g_hash_table_lookup (threads, (gpointer)tid)!=NULL) {
3087 /* See comment in wait_for_tids about thread cleanup */
3088 mono_threads_unlock ();
3089 THREAD_DEBUG (g_message ("%s: cleaning up after thread %"G_GSIZE_FORMAT, __func__, tid));
3090 thread_cleanup (wait->threads [ret]);
3092 mono_threads_unlock ();
3096 static void build_wait_tids (gpointer key, gpointer value, gpointer user)
3098 struct wait_data *wait=(struct wait_data *)user;
3100 if(wait->num<MAXIMUM_WAIT_OBJECTS) {
3102 MonoInternalThread *thread=(MonoInternalThread *)value;
3104 /* Ignore background threads, we abort them later */
3105 /* Do not lock here since it is not needed and the caller holds threads_lock */
3106 if (thread->state & ThreadState_Background) {
3107 THREAD_DEBUG (g_message ("%s: ignoring background thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3108 return; /* just leave, ignore */
3111 if (mono_gc_is_finalizer_internal_thread (thread)) {
3112 THREAD_DEBUG (g_message ("%s: ignoring finalizer thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3116 if (thread == mono_thread_internal_current ()) {
3117 THREAD_DEBUG (g_message ("%s: ignoring current thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3121 if (mono_thread_get_main () && (thread == mono_thread_get_main ()->internal_thread)) {
3122 THREAD_DEBUG (g_message ("%s: ignoring main thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3126 if (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE) {
3127 THREAD_DEBUG (g_message ("%s: ignoring thread %" G_GSIZE_FORMAT "with DONT_MANAGE flag set.", __func__, (gsize)thread->tid));
3131 handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3132 if (handle == NULL) {
3133 THREAD_DEBUG (g_message ("%s: ignoring unopenable thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3137 THREAD_DEBUG (g_message ("%s: Invoking mono_thread_manage callback on thread %p", __func__, thread));
3138 if ((thread->manage_callback == NULL) || (thread->manage_callback (thread->root_domain_thread) == TRUE)) {
3139 wait->handles[wait->num]=handle;
3140 wait->threads[wait->num]=thread;
3143 THREAD_DEBUG (g_message ("%s: adding thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3145 THREAD_DEBUG (g_message ("%s: ignoring (because of callback) thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3150 /* Just ignore the rest, we can't do anything with
3157 remove_and_abort_threads (gpointer key, gpointer value, gpointer user)
3159 struct wait_data *wait=(struct wait_data *)user;
3160 MonoNativeThreadId self = mono_native_thread_id_get ();
3161 MonoInternalThread *thread = (MonoInternalThread *)value;
3164 if (wait->num >= MAXIMUM_WAIT_OBJECTS)
3167 /* The finalizer thread is not a background thread */
3168 if (!mono_native_thread_id_equals (thread_get_tid (thread), self)
3169 && (thread->state & ThreadState_Background) != 0
3170 && (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE) == 0
3172 handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3176 wait->handles[wait->num] = handle;
3177 wait->threads[wait->num] = thread;
3180 THREAD_DEBUG (g_print ("%s: Aborting id: %"G_GSIZE_FORMAT"\n", __func__, (gsize)thread->tid));
3181 mono_thread_internal_stop (thread);
3185 return !mono_native_thread_id_equals (thread_get_tid (thread), self)
3186 && !mono_gc_is_finalizer_internal_thread (thread);
3190 * mono_threads_set_shutting_down:
3192 * Is called by a thread that wants to shut down Mono. If the runtime is already
3193 * shutting down, the calling thread is suspended/stopped, and this function never
3197 mono_threads_set_shutting_down (void)
3199 MonoInternalThread *current_thread = mono_thread_internal_current ();
3201 mono_threads_lock ();
3203 if (shutting_down) {
3204 mono_threads_unlock ();
3206 /* Make sure we're properly suspended/stopped */
3208 LOCK_THREAD (current_thread);
3210 if ((current_thread->state & ThreadState_SuspendRequested) ||
3211 (current_thread->state & ThreadState_AbortRequested) ||
3212 (current_thread->state & ThreadState_StopRequested)) {
3213 UNLOCK_THREAD (current_thread);
3214 mono_thread_execute_interruption ();
3216 current_thread->state |= ThreadState_Stopped;
3217 UNLOCK_THREAD (current_thread);
3220 /*since we're killing the thread, unset the current domain.*/
3221 mono_domain_unset ();
3223 /* Wake up other threads potentially waiting for us */
3224 mono_thread_info_exit ();
3226 shutting_down = TRUE;
3228 /* Not really a background state change, but this will
3229 * interrupt the main thread if it is waiting for all
3230 * the other threads.
3232 SetEvent (background_change_event);
3234 mono_threads_unlock ();
3238 void mono_thread_manage (void)
3240 struct wait_data wait_data;
3241 struct wait_data *wait = &wait_data;
3243 memset (wait, 0, sizeof (struct wait_data));
3244 /* join each thread that's still running */
3245 THREAD_DEBUG (g_message ("%s: Joining each running thread...", __func__));
3247 mono_threads_lock ();
3249 THREAD_DEBUG (g_message("%s: No threads", __func__));
3250 mono_threads_unlock ();
3253 mono_threads_unlock ();
3256 mono_threads_lock ();
3257 if (shutting_down) {
3258 /* somebody else is shutting down */
3259 mono_threads_unlock ();
3262 THREAD_DEBUG (g_message ("%s: There are %d threads to join", __func__, mono_g_hash_table_size (threads));
3263 mono_g_hash_table_foreach (threads, print_tids, NULL));
3265 ResetEvent (background_change_event);
3267 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3268 memset (wait->threads, 0, MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3269 mono_g_hash_table_foreach (threads, build_wait_tids, wait);
3270 mono_threads_unlock ();
3272 /* Something to wait for */
3273 wait_for_tids_or_state_change (wait, INFINITE);
3275 THREAD_DEBUG (g_message ("%s: I have %d threads after waiting.", __func__, wait->num));
3276 } while(wait->num>0);
3278 /* Mono is shutting down, so just wait for the end */
3279 if (!mono_runtime_try_shutdown ()) {
3280 /*FIXME mono_thread_suspend probably should call mono_thread_execute_interruption when self interrupting. */
3281 mono_thread_suspend (mono_thread_internal_current ());
3282 mono_thread_execute_interruption ();
3286 * Remove everything but the finalizer thread and self.
3287 * Also abort all the background threads
3290 mono_threads_lock ();
3293 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3294 memset (wait->threads, 0, MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3295 mono_g_hash_table_foreach_remove (threads, remove_and_abort_threads, wait);
3297 mono_threads_unlock ();
3299 THREAD_DEBUG (g_message ("%s: wait->num is now %d", __func__, wait->num));
3301 /* Something to wait for */
3302 wait_for_tids (wait, INFINITE);
3304 } while (wait->num > 0);
3307 * give the subthreads a chance to really quit (this is mainly needed
3308 * to get correct user and system times from getrusage/wait/time(1)).
3309 * This could be removed if we avoid pthread_detach() and use pthread_join().
3311 mono_thread_info_yield ();
3315 collect_threads_for_suspend (gpointer key, gpointer value, gpointer user_data)
3317 MonoInternalThread *thread = (MonoInternalThread*)value;
3318 struct wait_data *wait = (struct wait_data*)user_data;
3322 * We try to exclude threads early, to avoid running into the MAXIMUM_WAIT_OBJECTS
3324 * This needs no locking.
3326 if ((thread->state & ThreadState_Suspended) != 0 ||
3327 (thread->state & ThreadState_Stopped) != 0)
3330 if (wait->num<MAXIMUM_WAIT_OBJECTS) {
3331 handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3335 wait->handles [wait->num] = handle;
3336 wait->threads [wait->num] = thread;
3342 * mono_thread_suspend_all_other_threads:
3344 * Suspend all managed threads except the finalizer thread and this thread. It is
3345 * not possible to resume them later.
3347 void mono_thread_suspend_all_other_threads (void)
3349 struct wait_data wait_data;
3350 struct wait_data *wait = &wait_data;
3352 MonoNativeThreadId self = mono_native_thread_id_get ();
3353 guint32 eventidx = 0;
3354 gboolean starting, finished;
3356 memset (wait, 0, sizeof (struct wait_data));
3358 * The other threads could be in an arbitrary state at this point, i.e.
3359 * they could be starting up, shutting down etc. This means that there could be
3360 * threads which are not even in the threads hash table yet.
3364 * First we set a barrier which will be checked by all threads before they
3365 * are added to the threads hash table, and they will exit if the flag is set.
3366 * This ensures that no threads could be added to the hash later.
3367 * We will use shutting_down as the barrier for now.
3369 g_assert (shutting_down);
3372 * We make multiple calls to WaitForMultipleObjects since:
3373 * - we can only wait for MAXIMUM_WAIT_OBJECTS threads
3374 * - some threads could exit without becoming suspended
3379 * Make a copy of the hashtable since we can't do anything with
3380 * threads while threads_mutex is held.
3383 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3384 memset (wait->threads, 0, MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3385 mono_threads_lock ();
3386 mono_g_hash_table_foreach (threads, collect_threads_for_suspend, wait);
3387 mono_threads_unlock ();
3390 /* Get the suspended events that we'll be waiting for */
3391 for (i = 0; i < wait->num; ++i) {
3392 MonoInternalThread *thread = wait->threads [i];
3394 if (mono_native_thread_id_equals (thread_get_tid (thread), self)
3395 || mono_gc_is_finalizer_internal_thread (thread)
3396 || (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE)
3398 //CloseHandle (wait->handles [i]);
3399 wait->threads [i] = NULL; /* ignore this thread in next loop */
3403 LOCK_THREAD (thread);
3405 if ((thread->state & ThreadState_Suspended) != 0 ||
3406 (thread->state & ThreadState_StopRequested) != 0 ||
3407 (thread->state & ThreadState_Stopped) != 0) {
3408 UNLOCK_THREAD (thread);
3409 CloseHandle (wait->handles [i]);
3410 wait->threads [i] = NULL; /* ignore this thread in next loop */
3416 /* Convert abort requests into suspend requests */
3417 if ((thread->state & ThreadState_AbortRequested) != 0)
3418 thread->state &= ~ThreadState_AbortRequested;
3420 thread->state |= ThreadState_SuspendRequested;
3422 /* Signal the thread to suspend + calls UNLOCK_THREAD (thread) */
3423 async_suspend_internal (thread, TRUE);
3425 if (eventidx <= 0) {
3427 * If there are threads which are starting up, we wait until they
3428 * are suspended when they try to register in the threads hash.
3429 * This is guaranteed to finish, since the threads which can create new
3430 * threads get suspended after a while.
3431 * FIXME: The finalizer thread can still create new threads.
3433 mono_threads_lock ();
3434 if (threads_starting_up)
3435 starting = mono_g_hash_table_size (threads_starting_up) > 0;
3438 mono_threads_unlock ();
3440 mono_thread_info_sleep (100, NULL);
3448 MonoInternalThread *thread;
3449 MonoStackFrameInfo *frames;
3450 int nframes, max_frames;
3451 int nthreads, max_threads;
3452 MonoInternalThread **threads;
3453 } ThreadDumpUserData;
3455 static gboolean thread_dump_requested;
3457 /* This needs to be async safe */
3459 collect_frame (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
3461 ThreadDumpUserData *ud = (ThreadDumpUserData *)data;
3463 if (ud->nframes < ud->max_frames) {
3464 memcpy (&ud->frames [ud->nframes], frame, sizeof (MonoStackFrameInfo));
3471 /* This needs to be async safe */
3472 static SuspendThreadResult
3473 get_thread_dump (MonoThreadInfo *info, gpointer ud)
3475 ThreadDumpUserData *user_data = (ThreadDumpUserData *)ud;
3476 MonoInternalThread *thread = user_data->thread;
3479 /* This no longer works with remote unwinding */
3481 wapi_desc = wapi_current_thread_desc ();
3482 g_string_append_printf (text, " tid=0x%p this=0x%p %s\n", (gpointer)(gsize)thread->tid, thread, wapi_desc);
3487 if (thread == mono_thread_internal_current ())
3488 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (collect_frame, NULL, MONO_UNWIND_SIGNAL_SAFE, ud);
3490 mono_get_eh_callbacks ()->mono_walk_stack_with_state (collect_frame, mono_thread_info_get_suspend_state (info), MONO_UNWIND_SIGNAL_SAFE, ud);
3492 return MonoResumeThread;
3496 int nthreads, max_threads;
3497 MonoInternalThread **threads;
3498 } CollectThreadsUserData;
3501 collect_thread (gpointer key, gpointer value, gpointer user)
3503 CollectThreadsUserData *ud = (CollectThreadsUserData *)user;
3504 MonoInternalThread *thread = (MonoInternalThread *)value;
3506 if (ud->nthreads < ud->max_threads)
3507 ud->threads [ud->nthreads ++] = thread;
3511 * Collect running threads into the THREADS array.
3512 * THREADS should be an array allocated on the stack.
3515 collect_threads (MonoInternalThread **thread_array, int max_threads)
3517 CollectThreadsUserData ud;
3519 memset (&ud, 0, sizeof (ud));
3520 /* This array contains refs, but its on the stack, so its ok */
3521 ud.threads = thread_array;
3522 ud.max_threads = max_threads;
3524 mono_threads_lock ();
3525 mono_g_hash_table_foreach (threads, collect_thread, &ud);
3526 mono_threads_unlock ();
3532 dump_thread (MonoInternalThread *thread, ThreadDumpUserData *ud)
3534 GString* text = g_string_new (0);
3536 GError *error = NULL;
3539 ud->thread = thread;
3542 /* Collect frames for the thread */
3543 if (thread == mono_thread_internal_current ()) {
3544 get_thread_dump (mono_thread_info_current (), ud);
3546 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), FALSE, get_thread_dump, ud);
3550 * Do all the non async-safe work outside of get_thread_dump.
3553 name = g_utf16_to_utf8 (thread->name, thread->name_len, NULL, NULL, &error);
3555 g_string_append_printf (text, "\n\"%s\"", name);
3558 else if (thread->threadpool_thread) {
3559 g_string_append (text, "\n\"<threadpool thread>\"");
3561 g_string_append (text, "\n\"<unnamed thread>\"");
3564 for (i = 0; i < ud->nframes; ++i) {
3565 MonoStackFrameInfo *frame = &ud->frames [i];
3566 MonoMethod *method = NULL;
3568 if (frame->type == FRAME_TYPE_MANAGED)
3569 method = mono_jit_info_get_method (frame->ji);
3572 gchar *location = mono_debug_print_stack_frame (method, frame->native_offset, frame->domain);
3573 g_string_append_printf (text, " %s\n", location);
3576 g_string_append_printf (text, " at <unknown> <0x%05x>\n", frame->native_offset);
3580 fprintf (stdout, "%s", text->str);
3582 #if PLATFORM_WIN32 && TARGET_WIN32 && _DEBUG
3583 OutputDebugStringA(text->str);
3586 g_string_free (text, TRUE);
3591 mono_threads_perform_thread_dump (void)
3593 ThreadDumpUserData ud;
3594 MonoInternalThread *thread_array [128];
3595 int tindex, nthreads;
3597 if (!thread_dump_requested)
3600 printf ("Full thread dump:\n");
3602 /* Make a copy of the threads hash to avoid doing work inside threads_lock () */
3603 nthreads = collect_threads (thread_array, 128);
3605 memset (&ud, 0, sizeof (ud));
3606 ud.frames = g_new0 (MonoStackFrameInfo, 256);
3607 ud.max_frames = 256;
3609 for (tindex = 0; tindex < nthreads; ++tindex)
3610 dump_thread (thread_array [tindex], &ud);
3614 thread_dump_requested = FALSE;
3617 /* Obtain the thread dump of all threads */
3619 mono_threads_get_thread_dump (MonoArray **out_threads, MonoArray **out_stack_frames)
3623 ThreadDumpUserData ud;
3624 MonoInternalThread *thread_array [128];
3625 MonoDomain *domain = mono_domain_get ();
3626 MonoDebugSourceLocation *location;
3627 int tindex, nthreads;
3629 mono_error_init (&error);
3631 *out_threads = NULL;
3632 *out_stack_frames = NULL;
3634 /* Make a copy of the threads hash to avoid doing work inside threads_lock () */
3635 nthreads = collect_threads (thread_array, 128);
3637 memset (&ud, 0, sizeof (ud));
3638 ud.frames = g_new0 (MonoStackFrameInfo, 256);
3639 ud.max_frames = 256;
3641 *out_threads = mono_array_new_checked (domain, mono_defaults.thread_class, nthreads, &error);
3642 if (!is_ok (&error))
3644 *out_stack_frames = mono_array_new_checked (domain, mono_defaults.array_class, nthreads, &error);
3645 if (!is_ok (&error))
3648 for (tindex = 0; tindex < nthreads; ++tindex) {
3649 MonoInternalThread *thread = thread_array [tindex];
3650 MonoArray *thread_frames;
3656 /* Collect frames for the thread */
3657 if (thread == mono_thread_internal_current ()) {
3658 get_thread_dump (mono_thread_info_current (), &ud);
3660 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), FALSE, get_thread_dump, &ud);
3663 mono_array_setref_fast (*out_threads, tindex, mono_thread_current_for_thread (thread));
3665 thread_frames = mono_array_new_checked (domain, mono_defaults.stack_frame_class, ud.nframes, &error);
3666 if (!is_ok (&error))
3668 mono_array_setref_fast (*out_stack_frames, tindex, thread_frames);
3670 for (i = 0; i < ud.nframes; ++i) {
3671 MonoStackFrameInfo *frame = &ud.frames [i];
3672 MonoMethod *method = NULL;
3673 MonoStackFrame *sf = (MonoStackFrame *)mono_object_new_checked (domain, mono_defaults.stack_frame_class, &error);
3674 if (!mono_error_ok (&error))
3677 sf->native_offset = frame->native_offset;
3679 if (frame->type == FRAME_TYPE_MANAGED)
3680 method = mono_jit_info_get_method (frame->ji);
3683 sf->method_address = (gsize) frame->ji->code_start;
3685 MonoReflectionMethod *rm = mono_method_get_object_checked (domain, method, NULL, &error);
3686 mono_error_raise_exception (&error); /* FIXME don't raise here */
3687 MONO_OBJECT_SETREF (sf, method, rm);
3689 location = mono_debug_lookup_source_location (method, frame->native_offset, domain);
3691 sf->il_offset = location->il_offset;
3693 if (location && location->source_file) {
3694 MONO_OBJECT_SETREF (sf, filename, mono_string_new (domain, location->source_file));
3695 sf->line = location->row;
3696 sf->column = location->column;
3698 mono_debug_free_source_location (location);
3703 mono_array_setref (thread_frames, i, sf);
3709 mono_error_raise_exception (&error); /* FIXME don't raise here */
3713 * mono_threads_request_thread_dump:
3715 * Ask all threads except the current to print their stacktrace to stdout.
3718 mono_threads_request_thread_dump (void)
3720 /*The new thread dump code runs out of the finalizer thread. */
3721 thread_dump_requested = TRUE;
3722 mono_gc_finalize_notify ();
3727 gint allocated; /* +1 so that refs [allocated] == NULL */
3731 typedef struct ref_stack RefStack;
3734 ref_stack_new (gint initial_size)
3738 initial_size = MAX (initial_size, 16) + 1;
3739 rs = g_new0 (RefStack, 1);
3740 rs->refs = g_new0 (gpointer, initial_size);
3741 rs->allocated = initial_size;
3746 ref_stack_destroy (gpointer ptr)
3748 RefStack *rs = (RefStack *)ptr;
3757 ref_stack_push (RefStack *rs, gpointer ptr)
3759 g_assert (rs != NULL);
3761 if (rs->bottom >= rs->allocated) {
3762 rs->refs = (void **)g_realloc (rs->refs, rs->allocated * 2 * sizeof (gpointer) + 1);
3763 rs->allocated <<= 1;
3764 rs->refs [rs->allocated] = NULL;
3766 rs->refs [rs->bottom++] = ptr;
3770 ref_stack_pop (RefStack *rs)
3772 if (rs == NULL || rs->bottom == 0)
3776 rs->refs [rs->bottom] = NULL;
3780 ref_stack_find (RefStack *rs, gpointer ptr)
3787 for (refs = rs->refs; refs && *refs; refs++) {
3795 * mono_thread_push_appdomain_ref:
3797 * Register that the current thread may have references to objects in domain
3798 * @domain on its stack. Each call to this function should be paired with a
3799 * call to pop_appdomain_ref.
3802 mono_thread_push_appdomain_ref (MonoDomain *domain)
3804 MonoInternalThread *thread = mono_thread_internal_current ();
3807 /* printf ("PUSH REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, domain->friendly_name); */
3808 SPIN_LOCK (thread->lock_thread_id);
3809 if (thread->appdomain_refs == NULL)
3810 thread->appdomain_refs = ref_stack_new (16);
3811 ref_stack_push ((RefStack *)thread->appdomain_refs, domain);
3812 SPIN_UNLOCK (thread->lock_thread_id);
3817 mono_thread_pop_appdomain_ref (void)
3819 MonoInternalThread *thread = mono_thread_internal_current ();
3822 /* printf ("POP REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, ((MonoDomain*)(thread->appdomain_refs->data))->friendly_name); */
3823 SPIN_LOCK (thread->lock_thread_id);
3824 ref_stack_pop ((RefStack *)thread->appdomain_refs);
3825 SPIN_UNLOCK (thread->lock_thread_id);
3830 mono_thread_internal_has_appdomain_ref (MonoInternalThread *thread, MonoDomain *domain)
3833 SPIN_LOCK (thread->lock_thread_id);
3834 res = ref_stack_find ((RefStack *)thread->appdomain_refs, domain);
3835 SPIN_UNLOCK (thread->lock_thread_id);
3840 mono_thread_has_appdomain_ref (MonoThread *thread, MonoDomain *domain)
3842 return mono_thread_internal_has_appdomain_ref (thread->internal_thread, domain);
3845 typedef struct abort_appdomain_data {
3846 struct wait_data wait;
3848 } abort_appdomain_data;
3851 collect_appdomain_thread (gpointer key, gpointer value, gpointer user_data)
3853 MonoInternalThread *thread = (MonoInternalThread*)value;
3854 abort_appdomain_data *data = (abort_appdomain_data*)user_data;
3855 MonoDomain *domain = data->domain;
3857 if (mono_thread_internal_has_appdomain_ref (thread, domain)) {
3858 /* printf ("ABORTING THREAD %p BECAUSE IT REFERENCES DOMAIN %s.\n", thread->tid, domain->friendly_name); */
3860 if(data->wait.num<MAXIMUM_WAIT_OBJECTS) {
3861 HANDLE handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3864 data->wait.handles [data->wait.num] = handle;
3865 data->wait.threads [data->wait.num] = thread;
3868 /* Just ignore the rest, we can't do anything with
3876 * mono_threads_abort_appdomain_threads:
3878 * Abort threads which has references to the given appdomain.
3881 mono_threads_abort_appdomain_threads (MonoDomain *domain, int timeout)
3883 #ifdef __native_client__
3887 abort_appdomain_data user_data;
3889 int orig_timeout = timeout;
3892 THREAD_DEBUG (g_message ("%s: starting abort", __func__));
3894 start_time = mono_msec_ticks ();
3896 mono_threads_lock ();
3898 user_data.domain = domain;
3899 user_data.wait.num = 0;
3900 /* This shouldn't take any locks */
3901 mono_g_hash_table_foreach (threads, collect_appdomain_thread, &user_data);
3902 mono_threads_unlock ();
3904 if (user_data.wait.num > 0) {
3905 /* Abort the threads outside the threads lock */
3906 for (i = 0; i < user_data.wait.num; ++i)
3907 mono_thread_internal_abort (user_data.wait.threads [i]);
3910 * We should wait for the threads either to abort, or to leave the
3911 * domain. We can't do the latter, so we wait with a timeout.
3913 wait_for_tids (&user_data.wait, 100);
3916 /* Update remaining time */
3917 timeout -= mono_msec_ticks () - start_time;
3918 start_time = mono_msec_ticks ();
3920 if (orig_timeout != -1 && timeout < 0)
3923 while (user_data.wait.num > 0);
3925 THREAD_DEBUG (g_message ("%s: abort done", __func__));
3931 clear_cached_culture (gpointer key, gpointer value, gpointer user_data)
3933 MonoInternalThread *thread = (MonoInternalThread*)value;
3934 MonoDomain *domain = (MonoDomain*)user_data;
3937 /* No locking needed here */
3938 /* FIXME: why no locking? writes to the cache are protected with synch_cs above */
3940 if (thread->cached_culture_info) {
3941 for (i = 0; i < NUM_CACHED_CULTURES * 2; ++i) {
3942 MonoObject *obj = mono_array_get (thread->cached_culture_info, MonoObject*, i);
3943 if (obj && obj->vtable->domain == domain)
3944 mono_array_set (thread->cached_culture_info, MonoObject*, i, NULL);
3950 * mono_threads_clear_cached_culture:
3952 * Clear the cached_current_culture from all threads if it is in the
3956 mono_threads_clear_cached_culture (MonoDomain *domain)
3958 mono_threads_lock ();
3959 mono_g_hash_table_foreach (threads, clear_cached_culture, domain);
3960 mono_threads_unlock ();
3964 * mono_thread_get_undeniable_exception:
3966 * Return an exception which needs to be raised when leaving a catch clause.
3967 * This is used for undeniable exception propagation.
3970 mono_thread_get_undeniable_exception (void)
3972 MonoInternalThread *thread = mono_thread_internal_current ();
3974 if (thread && thread->abort_exc && !is_running_protected_wrapper ()) {
3976 * FIXME: Clear the abort exception and return an AppDomainUnloaded
3977 * exception if the thread no longer references a dying appdomain.
3979 thread->abort_exc->trace_ips = NULL;
3980 thread->abort_exc->stack_trace = NULL;
3981 return thread->abort_exc;
3987 #if MONO_SMALL_CONFIG
3988 #define NUM_STATIC_DATA_IDX 4
3989 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
3993 #define NUM_STATIC_DATA_IDX 8
3994 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
3995 1024, 4096, 16384, 65536, 262144, 1048576, 4194304, 16777216
3999 static MonoBitSet *thread_reference_bitmaps [NUM_STATIC_DATA_IDX];
4000 static MonoBitSet *context_reference_bitmaps [NUM_STATIC_DATA_IDX];
4003 mark_slots (void *addr, MonoBitSet **bitmaps, MonoGCMarkFunc mark_func, void *gc_data)
4005 gpointer *static_data = (gpointer *)addr;
4007 for (int i = 0; i < NUM_STATIC_DATA_IDX; ++i) {
4008 void **ptr = (void **)static_data [i];
4013 MONO_BITSET_FOREACH (bitmaps [i], idx, {
4014 void **p = ptr + idx;
4017 mark_func ((MonoObject**)p, gc_data);
4023 mark_tls_slots (void *addr, MonoGCMarkFunc mark_func, void *gc_data)
4025 mark_slots (addr, thread_reference_bitmaps, mark_func, gc_data);
4029 mark_ctx_slots (void *addr, MonoGCMarkFunc mark_func, void *gc_data)
4031 mark_slots (addr, context_reference_bitmaps, mark_func, gc_data);
4035 * mono_alloc_static_data
4037 * Allocate memory blocks for storing threads or context static data
4040 mono_alloc_static_data (gpointer **static_data_ptr, guint32 offset, gboolean threadlocal)
4042 guint idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4045 gpointer* static_data = *static_data_ptr;
4047 static MonoGCDescriptor tls_desc = MONO_GC_DESCRIPTOR_NULL;
4048 static MonoGCDescriptor ctx_desc = MONO_GC_DESCRIPTOR_NULL;
4050 if (mono_gc_user_markers_supported ()) {
4051 if (tls_desc == MONO_GC_DESCRIPTOR_NULL)
4052 tls_desc = mono_gc_make_root_descr_user (mark_tls_slots);
4054 if (ctx_desc == MONO_GC_DESCRIPTOR_NULL)
4055 ctx_desc = mono_gc_make_root_descr_user (mark_ctx_slots);
4058 static_data = (void **)mono_gc_alloc_fixed (static_data_size [0], threadlocal ? tls_desc : ctx_desc,
4059 threadlocal ? MONO_ROOT_SOURCE_THREAD_STATIC : MONO_ROOT_SOURCE_CONTEXT_STATIC,
4060 threadlocal ? "managed thread-static variables" : "managed context-static variables");
4061 *static_data_ptr = static_data;
4062 static_data [0] = static_data;
4065 for (i = 1; i <= idx; ++i) {
4066 if (static_data [i])
4069 if (mono_gc_user_markers_supported ())
4070 static_data [i] = g_malloc0 (static_data_size [i]);
4072 static_data [i] = mono_gc_alloc_fixed (static_data_size [i], MONO_GC_DESCRIPTOR_NULL,
4073 threadlocal ? MONO_ROOT_SOURCE_THREAD_STATIC : MONO_ROOT_SOURCE_CONTEXT_STATIC,
4074 threadlocal ? "managed thread-static variables" : "managed context-static variables");
4079 mono_free_static_data (gpointer* static_data)
4082 for (i = 1; i < NUM_STATIC_DATA_IDX; ++i) {
4083 gpointer p = static_data [i];
4087 * At this point, the static data pointer array is still registered with the
4088 * GC, so must ensure that mark_tls_slots() will not encounter any invalid
4089 * data. Freeing the individual arrays without first nulling their slots
4090 * would make it possible for mark_tls/ctx_slots() to encounter a pointer to
4091 * such an already freed array. See bug #13813.
4093 static_data [i] = NULL;
4094 mono_memory_write_barrier ();
4095 if (mono_gc_user_markers_supported ())
4098 mono_gc_free_fixed (p);
4100 mono_gc_free_fixed (static_data);
4104 * mono_init_static_data_info
4106 * Initializes static data counters
4108 static void mono_init_static_data_info (StaticDataInfo *static_data)
4110 static_data->idx = 0;
4111 static_data->offset = 0;
4112 static_data->freelist = NULL;
4116 * mono_alloc_static_data_slot
4118 * Generates an offset for static data. static_data contains the counters
4119 * used to generate it.
4122 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align)
4124 if (!static_data->idx && !static_data->offset) {
4126 * we use the first chunk of the first allocation also as
4127 * an array for the rest of the data
4129 static_data->offset = sizeof (gpointer) * NUM_STATIC_DATA_IDX;
4131 static_data->offset += align - 1;
4132 static_data->offset &= ~(align - 1);
4133 if (static_data->offset + size >= static_data_size [static_data->idx]) {
4134 static_data->idx ++;
4135 g_assert (size <= static_data_size [static_data->idx]);
4136 g_assert (static_data->idx < NUM_STATIC_DATA_IDX);
4137 static_data->offset = 0;
4139 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (static_data->idx, static_data->offset, 0);
4140 static_data->offset += size;
4145 * ensure thread static fields already allocated are valid for thread
4146 * This function is called when a thread is created or on thread attach.
4149 thread_adjust_static_data (MonoInternalThread *thread)
4151 mono_threads_lock ();
4152 if (thread_static_info.offset || thread_static_info.idx > 0) {
4153 /* get the current allocated size */
4154 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (thread_static_info.idx, thread_static_info.offset, 0);
4155 mono_alloc_static_data (&thread->static_data, offset, TRUE);
4157 mono_threads_unlock ();
4161 * LOCKING: requires that threads_mutex is held
4164 context_adjust_static_data (MonoAppContext *ctx)
4166 if (context_static_info.offset || context_static_info.idx > 0) {
4167 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (context_static_info.idx, context_static_info.offset, 0);
4168 mono_alloc_static_data (&ctx->static_data, offset, FALSE);
4169 ctx->data->static_data = ctx->static_data;
4174 * LOCKING: requires that threads_mutex is held
4177 alloc_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
4179 MonoInternalThread *thread = (MonoInternalThread *)value;
4180 guint32 offset = GPOINTER_TO_UINT (user);
4182 mono_alloc_static_data (&(thread->static_data), offset, TRUE);
4186 * LOCKING: requires that threads_mutex is held
4189 alloc_context_static_data_helper (gpointer key, gpointer value, gpointer user)
4191 MonoAppContext *ctx = (MonoAppContext *) mono_gchandle_get_target (GPOINTER_TO_INT (key));
4196 guint32 offset = GPOINTER_TO_UINT (user);
4197 mono_alloc_static_data (&ctx->static_data, offset, FALSE);
4198 ctx->data->static_data = ctx->static_data;
4201 static StaticDataFreeList*
4202 search_slot_in_freelist (StaticDataInfo *static_data, guint32 size, guint32 align)
4204 StaticDataFreeList* prev = NULL;
4205 StaticDataFreeList* tmp = static_data->freelist;
4207 if (tmp->size == size) {
4209 prev->next = tmp->next;
4211 static_data->freelist = tmp->next;
4220 #if SIZEOF_VOID_P == 4
4227 update_reference_bitmap (MonoBitSet **sets, guint32 offset, uintptr_t *bitmap, int numbits)
4229 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4231 sets [idx] = mono_bitset_new (static_data_size [idx] / sizeof (uintptr_t), 0);
4232 MonoBitSet *rb = sets [idx];
4233 offset = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
4234 offset /= sizeof (uintptr_t);
4235 /* offset is now the bitmap offset */
4236 for (int i = 0; i < numbits; ++i) {
4237 if (bitmap [i / sizeof (uintptr_t)] & (ONE_P << (i & (sizeof (uintptr_t) * 8 -1))))
4238 mono_bitset_set_fast (rb, offset + i);
4243 clear_reference_bitmap (MonoBitSet **sets, guint32 offset, guint32 size)
4245 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4246 MonoBitSet *rb = sets [idx];
4247 offset = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
4248 offset /= sizeof (uintptr_t);
4249 /* offset is now the bitmap offset */
4250 for (int i = 0; i < size / sizeof (uintptr_t); i++)
4251 mono_bitset_clear_fast (rb, offset + i);
4255 mono_alloc_special_static_data (guint32 static_type, guint32 size, guint32 align, uintptr_t *bitmap, int numbits)
4257 g_assert (static_type == SPECIAL_STATIC_THREAD || static_type == SPECIAL_STATIC_CONTEXT);
4259 StaticDataInfo *info;
4262 if (static_type == SPECIAL_STATIC_THREAD) {
4263 info = &thread_static_info;
4264 sets = thread_reference_bitmaps;
4266 info = &context_static_info;
4267 sets = context_reference_bitmaps;
4270 mono_threads_lock ();
4272 StaticDataFreeList *item = search_slot_in_freelist (info, size, align);
4276 offset = item->offset;
4279 offset = mono_alloc_static_data_slot (info, size, align);
4282 update_reference_bitmap (sets, offset, bitmap, numbits);
4284 if (static_type == SPECIAL_STATIC_THREAD) {
4285 /* This can be called during startup */
4286 if (threads != NULL)
4287 mono_g_hash_table_foreach (threads, alloc_thread_static_data_helper, GUINT_TO_POINTER (offset));
4289 if (contexts != NULL)
4290 g_hash_table_foreach (contexts, alloc_context_static_data_helper, GUINT_TO_POINTER (offset));
4292 ACCESS_SPECIAL_STATIC_OFFSET (offset, type) = SPECIAL_STATIC_OFFSET_TYPE_CONTEXT;
4295 mono_threads_unlock ();
4301 mono_get_special_static_data_for_thread (MonoInternalThread *thread, guint32 offset)
4303 guint32 static_type = ACCESS_SPECIAL_STATIC_OFFSET (offset, type);
4305 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4306 return get_thread_static_data (thread, offset);
4308 return get_context_static_data (thread->current_appcontext, offset);
4313 mono_get_special_static_data (guint32 offset)
4315 return mono_get_special_static_data_for_thread (mono_thread_internal_current (), offset);
4324 * LOCKING: requires that threads_mutex is held
4327 free_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
4329 MonoInternalThread *thread = (MonoInternalThread *)value;
4330 OffsetSize *data = (OffsetSize *)user;
4331 int idx = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, index);
4332 int off = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, offset);
4335 if (!thread->static_data || !thread->static_data [idx])
4337 ptr = ((char*) thread->static_data [idx]) + off;
4338 mono_gc_bzero_atomic (ptr, data->size);
4342 * LOCKING: requires that threads_mutex is held
4345 free_context_static_data_helper (gpointer key, gpointer value, gpointer user)
4347 MonoAppContext *ctx = (MonoAppContext *) mono_gchandle_get_target (GPOINTER_TO_INT (key));
4352 OffsetSize *data = (OffsetSize *)user;
4353 int idx = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, index);
4354 int off = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, offset);
4357 if (!ctx->static_data || !ctx->static_data [idx])
4360 ptr = ((char*) ctx->static_data [idx]) + off;
4361 mono_gc_bzero_atomic (ptr, data->size);
4365 do_free_special_slot (guint32 offset, guint32 size)
4367 guint32 static_type = ACCESS_SPECIAL_STATIC_OFFSET (offset, type);
4369 StaticDataInfo *info;
4371 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4372 info = &thread_static_info;
4373 sets = thread_reference_bitmaps;
4375 info = &context_static_info;
4376 sets = context_reference_bitmaps;
4379 guint32 data_offset = offset;
4380 ACCESS_SPECIAL_STATIC_OFFSET (data_offset, type) = 0;
4381 OffsetSize data = { data_offset, size };
4383 clear_reference_bitmap (sets, data.offset, data.size);
4385 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4386 if (threads != NULL)
4387 mono_g_hash_table_foreach (threads, free_thread_static_data_helper, &data);
4389 if (contexts != NULL)
4390 g_hash_table_foreach (contexts, free_context_static_data_helper, &data);
4393 if (!mono_runtime_is_shutting_down ()) {
4394 StaticDataFreeList *item = g_new0 (StaticDataFreeList, 1);
4396 item->offset = offset;
4399 item->next = info->freelist;
4400 info->freelist = item;
4405 do_free_special (gpointer key, gpointer value, gpointer data)
4407 MonoClassField *field = (MonoClassField *)key;
4408 guint32 offset = GPOINTER_TO_UINT (value);
4411 size = mono_type_size (field->type, &align);
4412 do_free_special_slot (offset, size);
4416 mono_alloc_special_static_data_free (GHashTable *special_static_fields)
4418 mono_threads_lock ();
4420 g_hash_table_foreach (special_static_fields, do_free_special, NULL);
4422 mono_threads_unlock ();
4426 mono_special_static_data_free_slot (guint32 offset, guint32 size)
4428 /* Only ever called for ThreadLocal instances */
4429 g_assert (ACCESS_SPECIAL_STATIC_OFFSET (offset, type) == SPECIAL_STATIC_OFFSET_TYPE_THREAD);
4431 mono_threads_lock ();
4432 do_free_special_slot (offset, size);
4433 mono_threads_unlock ();
4437 static void CALLBACK dummy_apc (ULONG_PTR param)
4443 * mono_thread_execute_interruption
4445 * Performs the operation that the requested thread state requires (abort,
4448 static MonoException*
4449 mono_thread_execute_interruption (void)
4451 MonoInternalThread *thread = mono_thread_internal_current ();
4452 MonoThread *sys_thread = mono_thread_current ();
4454 LOCK_THREAD (thread);
4456 /* MonoThread::interruption_requested can only be changed with atomics */
4457 if (InterlockedCompareExchange (&thread->interruption_requested, FALSE, TRUE)) {
4458 /* this will consume pending APC calls */
4460 WaitForSingleObjectEx (GetCurrentThread(), 0, TRUE);
4462 InterlockedDecrement (&thread_interruption_requested);
4464 /* Clear the interrupted flag of the thread so it can wait again */
4465 mono_thread_info_clear_self_interrupt ();
4468 /* If there's a pending exception and an AbortRequested, the pending exception takes precedence */
4469 if (sys_thread->pending_exception) {
4472 exc = sys_thread->pending_exception;
4473 sys_thread->pending_exception = NULL;
4475 UNLOCK_THREAD (thread);
4477 } else if ((thread->state & ThreadState_AbortRequested) != 0) {
4478 UNLOCK_THREAD (thread);
4479 g_assert (sys_thread->pending_exception == NULL);
4480 if (thread->abort_exc == NULL) {
4482 * This might be racy, but it has to be called outside the lock
4483 * since it calls managed code.
4485 MONO_OBJECT_SETREF (thread, abort_exc, mono_get_exception_thread_abort ());
4487 return thread->abort_exc;
4489 else if ((thread->state & ThreadState_SuspendRequested) != 0) {
4490 /* calls UNLOCK_THREAD (thread) */
4491 self_suspend_internal ();
4494 else if ((thread->state & ThreadState_StopRequested) != 0) {
4495 /* FIXME: do this through the JIT? */
4497 UNLOCK_THREAD (thread);
4499 mono_thread_exit ();
4501 } else if (thread->thread_interrupt_requested) {
4503 thread->thread_interrupt_requested = FALSE;
4504 UNLOCK_THREAD (thread);
4506 return(mono_get_exception_thread_interrupted ());
4509 UNLOCK_THREAD (thread);
4515 * mono_thread_request_interruption
4517 * A signal handler can call this method to request the interruption of a
4518 * thread. The result of the interruption will depend on the current state of
4519 * the thread. If the result is an exception that needs to be throw, it is
4520 * provided as return value.
4523 mono_thread_request_interruption (gboolean running_managed)
4525 MonoInternalThread *thread = mono_thread_internal_current ();
4527 /* The thread may already be stopping */
4532 if (thread->interrupt_on_stop &&
4533 thread->state & ThreadState_StopRequested &&
4534 thread->state & ThreadState_Background)
4538 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4540 InterlockedIncrement (&thread_interruption_requested);
4542 if (!running_managed || is_running_protected_wrapper ()) {
4543 /* Can't stop while in unmanaged code. Increase the global interruption
4544 request count. When exiting the unmanaged method the count will be
4545 checked and the thread will be interrupted. */
4547 /* this will awake the thread if it is in WaitForSingleObject
4549 /* Our implementation of this function ignores the func argument */
4551 QueueUserAPC ((PAPCFUNC)dummy_apc, thread->handle, (ULONG_PTR)NULL);
4553 mono_thread_info_self_interrupt ();
4558 return mono_thread_execute_interruption ();
4562 /*This function should be called by a thread after it has exited all of
4563 * its handle blocks at interruption time.*/
4565 mono_thread_resume_interruption (void)
4567 MonoInternalThread *thread = mono_thread_internal_current ();
4568 gboolean still_aborting;
4570 /* The thread may already be stopping */
4574 LOCK_THREAD (thread);
4575 still_aborting = (thread->state & ThreadState_AbortRequested) != 0;
4576 UNLOCK_THREAD (thread);
4578 /*This can happen if the protected block called Thread::ResetAbort*/
4579 if (!still_aborting)
4582 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4584 InterlockedIncrement (&thread_interruption_requested);
4586 mono_thread_info_self_interrupt ();
4588 return mono_thread_execute_interruption ();
4591 gboolean mono_thread_interruption_requested ()
4593 if (thread_interruption_requested) {
4594 MonoInternalThread *thread = mono_thread_internal_current ();
4595 /* The thread may already be stopping */
4597 return (thread->interruption_requested);
4602 static MonoException*
4603 mono_thread_interruption_checkpoint_request (gboolean bypass_abort_protection)
4605 MonoInternalThread *thread = mono_thread_internal_current ();
4607 /* The thread may already be stopping */
4611 if (thread->interruption_requested && (bypass_abort_protection || !is_running_protected_wrapper ())) {
4612 MonoException* exc = mono_thread_execute_interruption ();
4620 * Performs the interruption of the current thread, if one has been requested,
4621 * and the thread is not running a protected wrapper.
4622 * Return the exception which needs to be thrown, if any.
4625 mono_thread_interruption_checkpoint (void)
4627 return mono_thread_interruption_checkpoint_request (FALSE);
4631 * Performs the interruption of the current thread, if one has been requested.
4632 * Return the exception which needs to be thrown, if any.
4635 mono_thread_force_interruption_checkpoint_noraise (void)
4637 return mono_thread_interruption_checkpoint_request (TRUE);
4641 * mono_set_pending_exception:
4643 * Set the pending exception of the current thread to EXC.
4644 * The exception will be thrown when execution returns to managed code.
4647 mono_set_pending_exception (MonoException *exc)
4649 MonoThread *thread = mono_thread_current ();
4651 /* The thread may already be stopping */
4655 MONO_OBJECT_SETREF (thread, pending_exception, exc);
4657 mono_thread_request_interruption (FALSE);
4661 * mono_thread_interruption_request_flag:
4663 * Returns the address of a flag that will be non-zero if an interruption has
4664 * been requested for a thread. The thread to interrupt may not be the current
4665 * thread, so an additional call to mono_thread_interruption_requested() or
4666 * mono_thread_interruption_checkpoint() is allways needed if the flag is not
4669 gint32* mono_thread_interruption_request_flag ()
4671 return &thread_interruption_requested;
4675 mono_thread_init_apartment_state (void)
4678 MonoInternalThread* thread = mono_thread_internal_current ();
4680 /* Positive return value indicates success, either
4681 * S_OK if this is first CoInitialize call, or
4682 * S_FALSE if CoInitialize already called, but with same
4683 * threading model. A negative value indicates failure,
4684 * probably due to trying to change the threading model.
4686 if (CoInitializeEx(NULL, (thread->apartment_state == ThreadApartmentState_STA)
4687 ? COINIT_APARTMENTTHREADED
4688 : COINIT_MULTITHREADED) < 0) {
4689 thread->apartment_state = ThreadApartmentState_Unknown;
4695 mono_thread_cleanup_apartment_state (void)
4698 MonoInternalThread* thread = mono_thread_internal_current ();
4700 if (thread && thread->apartment_state != ThreadApartmentState_Unknown) {
4707 mono_thread_set_state (MonoInternalThread *thread, MonoThreadState state)
4709 LOCK_THREAD (thread);
4710 thread->state |= state;
4711 UNLOCK_THREAD (thread);
4715 mono_thread_clr_state (MonoInternalThread *thread, MonoThreadState state)
4717 LOCK_THREAD (thread);
4718 thread->state &= ~state;
4719 UNLOCK_THREAD (thread);
4723 mono_thread_test_state (MonoInternalThread *thread, MonoThreadState test)
4725 gboolean ret = FALSE;
4727 LOCK_THREAD (thread);
4729 if ((thread->state & test) != 0) {
4733 UNLOCK_THREAD (thread);
4738 static gboolean has_tls_get = FALSE;
4741 mono_runtime_set_has_tls_get (gboolean val)
4747 mono_runtime_has_tls_get (void)
4753 self_interrupt_thread (void *_unused)
4755 MonoThreadInfo *info = mono_thread_info_current ();
4756 MonoException *exc = mono_thread_execute_interruption ();
4757 if (exc) /*We must use _with_context since we didn't trampoline into the runtime*/
4758 mono_raise_exception_with_context (exc, &info->thread_saved_state [ASYNC_SUSPEND_STATE_INDEX].ctx); /* FIXME using thread_saved_state [ASYNC_SUSPEND_STATE_INDEX] can race with another suspend coming in. */
4759 g_assert_not_reached (); /*this MUST not happen since we can't resume from an async call*/
4763 mono_jit_info_match (MonoJitInfo *ji, gpointer ip)
4767 return ji->code_start <= ip && (char*)ip < (char*)ji->code_start + ji->code_size;
4771 last_managed (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
4773 MonoJitInfo **dest = (MonoJitInfo **)data;
4779 mono_thread_info_get_last_managed (MonoThreadInfo *info)
4781 MonoJitInfo *ji = NULL;
4786 * The suspended thread might be holding runtime locks. Make sure we don't try taking
4787 * any runtime locks while unwinding. In coop case we shouldn't safepoint in regions
4788 * where we hold runtime locks.
4790 if (!mono_threads_is_coop_enabled ())
4791 mono_thread_info_set_is_async_context (TRUE);
4792 mono_get_eh_callbacks ()->mono_walk_stack_with_state (last_managed, mono_thread_info_get_suspend_state (info), MONO_UNWIND_SIGNAL_SAFE, &ji);
4793 if (!mono_threads_is_coop_enabled ())
4794 mono_thread_info_set_is_async_context (FALSE);
4799 MonoInternalThread *thread;
4800 gboolean install_async_abort;
4801 MonoThreadInfoInterruptToken *interrupt_token;
4804 static SuspendThreadResult
4805 async_abort_critical (MonoThreadInfo *info, gpointer ud)
4807 AbortThreadData *data = (AbortThreadData *)ud;
4808 MonoInternalThread *thread = data->thread;
4809 MonoJitInfo *ji = NULL;
4810 gboolean protected_wrapper;
4811 gboolean running_managed;
4813 if (mono_get_eh_callbacks ()->mono_install_handler_block_guard (mono_thread_info_get_suspend_state (info)))
4814 return MonoResumeThread;
4816 /*someone is already interrupting it*/
4817 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4818 return MonoResumeThread;
4820 InterlockedIncrement (&thread_interruption_requested);
4822 ji = mono_thread_info_get_last_managed (info);
4823 protected_wrapper = ji && !ji->is_trampoline && !ji->async && mono_threads_is_critical_method (mono_jit_info_get_method (ji));
4824 running_managed = mono_jit_info_match (ji, MONO_CONTEXT_GET_IP (&mono_thread_info_get_suspend_state (info)->ctx));
4826 if (!protected_wrapper && running_managed) {
4827 /*We are in managed code*/
4828 /*Set the thread to call */
4829 if (data->install_async_abort)
4830 mono_thread_info_setup_async_call (info, self_interrupt_thread, NULL);
4831 return MonoResumeThread;
4834 * This will cause waits to be broken.
4835 * It will also prevent the thread from entering a wait, so if the thread returns
4836 * from the wait before it receives the abort signal, it will just spin in the wait
4837 * functions in the io-layer until the signal handler calls QueueUserAPC which will
4840 data->interrupt_token = mono_thread_info_prepare_interrupt (info);
4842 return MonoResumeThread;
4847 async_abort_internal (MonoInternalThread *thread, gboolean install_async_abort)
4849 AbortThreadData data;
4851 g_assert (thread != mono_thread_internal_current ());
4853 data.thread = thread;
4854 data.install_async_abort = install_async_abort;
4855 data.interrupt_token = NULL;
4857 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), TRUE, async_abort_critical, &data);
4858 if (data.interrupt_token)
4859 mono_thread_info_finish_interrupt (data.interrupt_token);
4860 /*FIXME we need to wait for interruption to complete -- figure out how much into interruption we should wait for here*/
4864 self_abort_internal (MonoError *error)
4868 mono_error_init (error);
4870 /* FIXME this is insanely broken, it doesn't cause interruption to happen synchronously
4871 * since passing FALSE to mono_thread_request_interruption makes sure it returns NULL */
4873 exc = mono_thread_request_interruption (TRUE);
4875 mono_error_set_exception_instance (error, exc);
4877 mono_thread_info_self_interrupt ();
4881 MonoInternalThread *thread;
4883 MonoThreadInfoInterruptToken *interrupt_token;
4884 } SuspendThreadData;
4886 static SuspendThreadResult
4887 async_suspend_critical (MonoThreadInfo *info, gpointer ud)
4889 SuspendThreadData *data = (SuspendThreadData *)ud;
4890 MonoInternalThread *thread = data->thread;
4891 MonoJitInfo *ji = NULL;
4892 gboolean protected_wrapper;
4893 gboolean running_managed;
4895 ji = mono_thread_info_get_last_managed (info);
4896 protected_wrapper = ji && !ji->is_trampoline && !ji->async && mono_threads_is_critical_method (mono_jit_info_get_method (ji));
4897 running_managed = mono_jit_info_match (ji, MONO_CONTEXT_GET_IP (&mono_thread_info_get_suspend_state (info)->ctx));
4899 if (running_managed && !protected_wrapper) {
4900 thread->state &= ~ThreadState_SuspendRequested;
4901 thread->state |= ThreadState_Suspended;
4902 return KeepSuspended;
4904 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 0)
4905 InterlockedIncrement (&thread_interruption_requested);
4906 if (data->interrupt)
4907 data->interrupt_token = mono_thread_info_prepare_interrupt ((MonoThreadInfo *)thread->thread_info);
4909 return MonoResumeThread;
4913 /* LOCKING: called with @thread synch_cs held, and releases it */
4915 async_suspend_internal (MonoInternalThread *thread, gboolean interrupt)
4917 SuspendThreadData data;
4919 g_assert (thread != mono_thread_internal_current ());
4921 data.thread = thread;
4922 data.interrupt = interrupt;
4923 data.interrupt_token = NULL;
4925 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), interrupt, async_suspend_critical, &data);
4926 if (data.interrupt_token)
4927 mono_thread_info_finish_interrupt (data.interrupt_token);
4929 UNLOCK_THREAD (thread);
4932 /* LOCKING: called with @thread synch_cs held, and releases it */
4934 self_suspend_internal (void)
4936 MonoInternalThread *thread;
4938 thread = mono_thread_internal_current ();
4940 mono_thread_info_begin_self_suspend ();
4941 thread->state &= ~ThreadState_SuspendRequested;
4942 thread->state |= ThreadState_Suspended;
4944 UNLOCK_THREAD (thread);
4946 mono_thread_info_end_self_suspend ();
4950 * mono_thread_is_foreign:
4951 * @thread: the thread to query
4953 * This function allows one to determine if a thread was created by the mono runtime and has
4954 * a well defined lifecycle or it's a foreigh one, created by the native environment.
4956 * Returns: TRUE if @thread was not created by the runtime.
4959 mono_thread_is_foreign (MonoThread *thread)
4961 MonoThreadInfo *info = (MonoThreadInfo *)thread->internal_thread->thread_info;
4962 return info->runtime_thread == FALSE;
4966 * mono_add_joinable_thread:
4968 * Add TID to the list of joinable threads.
4969 * LOCKING: Acquires the threads lock.
4972 mono_threads_add_joinable_thread (gpointer tid)
4976 * We cannot detach from threads because it causes problems like
4977 * 2fd16f60/r114307. So we collect them and join them when
4978 * we have time (in he finalizer thread).
4980 joinable_threads_lock ();
4981 if (!joinable_threads)
4982 joinable_threads = g_hash_table_new (NULL, NULL);
4983 g_hash_table_insert (joinable_threads, tid, tid);
4984 joinable_thread_count ++;
4985 joinable_threads_unlock ();
4987 mono_gc_finalize_notify ();
4992 * mono_threads_join_threads:
4994 * Join all joinable threads. This is called from the finalizer thread.
4995 * LOCKING: Acquires the threads lock.
4998 mono_threads_join_threads (void)
5001 GHashTableIter iter;
5008 if (!joinable_thread_count)
5012 joinable_threads_lock ();
5014 if (g_hash_table_size (joinable_threads)) {
5015 g_hash_table_iter_init (&iter, joinable_threads);
5016 g_hash_table_iter_next (&iter, &key, (void**)&tid);
5017 thread = (pthread_t)tid;
5018 g_hash_table_remove (joinable_threads, key);
5019 joinable_thread_count --;
5022 joinable_threads_unlock ();
5024 if (thread != pthread_self ())
5025 /* This shouldn't block */
5026 pthread_join (thread, NULL);
5037 * Wait for thread TID to exit.
5038 * LOCKING: Acquires the threads lock.
5041 mono_thread_join (gpointer tid)
5045 gboolean found = FALSE;
5047 joinable_threads_lock ();
5048 if (!joinable_threads)
5049 joinable_threads = g_hash_table_new (NULL, NULL);
5050 if (g_hash_table_lookup (joinable_threads, tid)) {
5051 g_hash_table_remove (joinable_threads, tid);
5052 joinable_thread_count --;
5055 joinable_threads_unlock ();
5058 thread = (pthread_t)tid;
5059 pthread_join (thread, NULL);
5064 mono_thread_internal_check_for_interruption_critical (MonoInternalThread *thread)
5066 if ((thread->state & (ThreadState_StopRequested | ThreadState_SuspendRequested)) != 0)
5067 mono_thread_interruption_checkpoint ();
5070 static inline gboolean
5071 is_appdomainunloaded_exception (MonoClass *klass)
5073 return klass == mono_class_get_appdomain_unloaded_exception_class ();
5076 static inline gboolean
5077 is_threadabort_exception (MonoClass *klass)
5079 return klass == mono_defaults.threadabortexception_class;
5083 mono_thread_internal_unhandled_exception (MonoObject* exc)
5085 if (mono_runtime_unhandled_exception_policy_get () == MONO_UNHANDLED_POLICY_CURRENT) {
5086 MonoClass *klass = exc->vtable->klass;
5087 if (is_threadabort_exception (klass)) {
5088 mono_thread_internal_reset_abort (mono_thread_internal_current ());
5089 } else if (!is_appdomainunloaded_exception (klass)) {
5090 mono_unhandled_exception (exc);
5091 if (mono_environment_exitcode_get () == 1)
5098 ves_icall_System_Threading_Thread_GetStackTraces (MonoArray **out_threads, MonoArray **out_stack_traces)
5100 mono_threads_get_thread_dump (out_threads, out_stack_traces);
5104 * mono_threads_attach_coop: called by native->managed wrappers
5108 * - @return: the original domain which needs to be restored, or NULL.
5111 * - @dummy: contains the original domain
5112 * - @return: a cookie containing current MonoThreadInfo*.
5115 mono_threads_attach_coop (MonoDomain *domain, gpointer *dummy)
5119 gboolean fresh_thread;
5122 /* Happens when called from AOTed code which is only used in the root domain. */
5123 domain = mono_get_root_domain ();
5128 /* On coop, when we detached, we moved the thread from RUNNING->BLOCKING.
5129 * If we try to reattach we do a BLOCKING->RUNNING transition. If the thread
5130 * is fresh, mono_thread_attach() will do a STARTING->RUNNING transition so
5131 * we're only responsible for making the cookie. */
5132 if (mono_threads_is_coop_enabled ()) {
5133 MonoThreadInfo *info = mono_thread_info_current_unchecked ();
5134 fresh_thread = !info || !mono_thread_info_is_live (info);
5137 if (!mono_thread_internal_current ()) {
5138 mono_thread_attach_full (domain, FALSE, &error);
5139 mono_error_assert_ok (&error);
5142 mono_thread_set_state (mono_thread_internal_current (), ThreadState_Background);
5145 orig = mono_domain_get ();
5147 mono_domain_set (domain, TRUE);
5149 if (!mono_threads_is_coop_enabled ())
5150 return orig != domain ? orig : NULL;
5154 /* mono_thread_attach put the thread in RUNNING mode from STARTING, but we need to
5155 * return the right cookie. */
5156 return mono_threads_enter_gc_unsafe_region_cookie (mono_thread_info_current ());
5159 /* thread state (BLOCKING|RUNNING) -> RUNNING */
5160 return mono_threads_enter_gc_unsafe_region (dummy);
5165 * mono_threads_detach_coop: called by native->managed wrappers
5168 * - @cookie: the original domain which needs to be restored, or NULL.
5172 * - @cookie: contains current MonoThreadInfo* if it was in BLOCKING mode, NULL otherwise
5173 * - @dummy: contains the original domain
5176 mono_threads_detach_coop (gpointer cookie, gpointer *dummy)
5178 MonoDomain *domain, *orig;
5180 if (!mono_threads_is_coop_enabled ()) {
5181 orig = (MonoDomain*) cookie;
5183 mono_domain_set (orig, TRUE);
5185 orig = (MonoDomain*) *dummy;
5187 domain = mono_domain_get ();
5190 /* it won't do anything if cookie is NULL
5191 * thread state RUNNING -> (RUNNING|BLOCKING) */
5192 mono_threads_exit_gc_unsafe_region (cookie, dummy);
5194 if (orig != domain) {
5196 mono_domain_unset ();
5198 mono_domain_set (orig, TRUE);