2 * threads.c: Thread support internal calls
5 * Dick Porter (dick@ximian.com)
6 * Paolo Molaro (lupus@ximian.com)
7 * Patrik Torstensson (patrik.torstensson@labs2.com)
9 * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
10 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
11 * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
12 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
20 #include <mono/metadata/object.h>
21 #include <mono/metadata/domain-internals.h>
22 #include <mono/metadata/profiler-private.h>
23 #include <mono/metadata/threads.h>
24 #include <mono/metadata/threads-types.h>
25 #include <mono/metadata/exception.h>
26 #include <mono/metadata/environment.h>
27 #include <mono/metadata/monitor.h>
28 #include <mono/metadata/gc-internals.h>
29 #include <mono/metadata/marshal.h>
30 #include <mono/metadata/runtime.h>
31 #include <mono/io-layer/io-layer.h>
32 #include <mono/metadata/object-internals.h>
33 #include <mono/metadata/mono-debug-debugger.h>
34 #include <mono/utils/monobitset.h>
35 #include <mono/utils/mono-compiler.h>
36 #include <mono/utils/mono-mmap.h>
37 #include <mono/utils/mono-membar.h>
38 #include <mono/utils/mono-time.h>
39 #include <mono/utils/mono-threads.h>
40 #include <mono/utils/mono-threads-coop.h>
41 #include <mono/utils/hazard-pointer.h>
42 #include <mono/utils/mono-tls.h>
43 #include <mono/utils/atomic.h>
44 #include <mono/utils/mono-memory-model.h>
45 #include <mono/utils/mono-threads-coop.h>
46 #include <mono/utils/mono-error-internals.h>
48 #include <mono/metadata/gc-internals.h>
49 #include <mono/metadata/reflection-internals.h>
55 #if defined(PLATFORM_ANDROID) && !defined(TARGET_ARM64) && !defined(TARGET_AMD64)
56 #define USE_TKILL_ON_ANDROID 1
59 #ifdef PLATFORM_ANDROID
62 #ifdef USE_TKILL_ON_ANDROID
63 extern int tkill (pid_t tid, int signal);
67 /*#define THREAD_DEBUG(a) do { a; } while (0)*/
68 #define THREAD_DEBUG(a)
69 /*#define THREAD_WAIT_DEBUG(a) do { a; } while (0)*/
70 #define THREAD_WAIT_DEBUG(a)
71 /*#define LIBGC_DEBUG(a) do { a; } while (0)*/
72 #define LIBGC_DEBUG(a)
74 #define SPIN_TRYLOCK(i) (InterlockedCompareExchange (&(i), 1, 0) == 0)
75 #define SPIN_LOCK(i) do { \
76 if (SPIN_TRYLOCK (i)) \
80 #define SPIN_UNLOCK(i) i = 0
82 #define LOCK_THREAD(thread) lock_thread((thread))
83 #define UNLOCK_THREAD(thread) unlock_thread((thread))
87 guint32 (*func)(void *);
103 typedef struct _StaticDataFreeList StaticDataFreeList;
104 struct _StaticDataFreeList {
105 StaticDataFreeList *next;
113 StaticDataFreeList *freelist;
116 /* Number of cached culture objects in the MonoThread->cached_culture_info array
117 * (per-type): we use the first NUM entries for CultureInfo and the last for
118 * UICultureInfo. So the size of the array is really NUM_CACHED_CULTURES * 2.
120 #define NUM_CACHED_CULTURES 4
121 #define CULTURES_START_IDX 0
122 #define UICULTURES_START_IDX NUM_CACHED_CULTURES
124 /* Controls access to the 'threads' hash table */
125 static void mono_threads_lock (void);
126 static void mono_threads_unlock (void);
127 static MonoCoopMutex threads_mutex;
129 /* Controls access to the 'joinable_threads' hash table */
130 #define joinable_threads_lock() mono_os_mutex_lock (&joinable_threads_mutex)
131 #define joinable_threads_unlock() mono_os_mutex_unlock (&joinable_threads_mutex)
132 static mono_mutex_t joinable_threads_mutex;
134 /* Holds current status of static data heap */
135 static StaticDataInfo thread_static_info;
136 static StaticDataInfo context_static_info;
138 /* The hash of existing threads (key is thread ID, value is
139 * MonoInternalThread*) that need joining before exit
141 static MonoGHashTable *threads=NULL;
143 /* List of app context GC handles.
144 * Added to from ves_icall_System_Runtime_Remoting_Contexts_Context_RegisterContext ().
146 static GHashTable *contexts = NULL;
148 /* Cleanup queue for contexts. */
149 static MonoReferenceQueue *context_queue;
152 * Threads which are starting up and they are not in the 'threads' hash yet.
153 * When handle_store is called for a thread, it will be removed from this hash table.
154 * Protected by mono_threads_lock ().
156 static MonoGHashTable *threads_starting_up = NULL;
158 /* The TLS key that holds the MonoObject assigned to each thread */
159 static MonoNativeTlsKey current_object_key;
162 /* Protected by the threads lock */
163 static GHashTable *joinable_threads;
164 static int joinable_thread_count;
166 #ifdef MONO_HAVE_FAST_TLS
167 /* we need to use both the Tls* functions and __thread because
168 * the gc needs to see all the threads
170 MONO_FAST_TLS_DECLARE(tls_current_object);
171 #define SET_CURRENT_OBJECT(x) do { \
172 MONO_FAST_TLS_SET (tls_current_object, x); \
173 mono_native_tls_set_value (current_object_key, x); \
175 #define GET_CURRENT_OBJECT() ((MonoInternalThread*) MONO_FAST_TLS_GET (tls_current_object))
177 #define SET_CURRENT_OBJECT(x) mono_native_tls_set_value (current_object_key, x)
178 #define GET_CURRENT_OBJECT() (MonoInternalThread*) mono_native_tls_get_value (current_object_key)
181 /* function called at thread start */
182 static MonoThreadStartCB mono_thread_start_cb = NULL;
184 /* function called at thread attach */
185 static MonoThreadAttachCB mono_thread_attach_cb = NULL;
187 /* function called at thread cleanup */
188 static MonoThreadCleanupFunc mono_thread_cleanup_fn = NULL;
190 /* The default stack size for each thread */
191 static guint32 default_stacksize = 0;
192 #define default_stacksize_for_thread(thread) ((thread)->stack_size? (thread)->stack_size: default_stacksize)
194 static void thread_adjust_static_data (MonoInternalThread *thread);
195 static void context_adjust_static_data (MonoAppContext *ctx);
196 static void mono_free_static_data (gpointer* static_data);
197 static void mono_init_static_data_info (StaticDataInfo *static_data);
198 static guint32 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align);
199 static gboolean mono_thread_resume (MonoInternalThread* thread);
200 static void async_abort_internal (MonoInternalThread *thread, gboolean install_async_abort);
201 static void self_abort_internal (MonoError *error);
202 static void async_suspend_internal (MonoInternalThread *thread, gboolean interrupt);
203 static void self_suspend_internal (void);
205 static MonoException* mono_thread_execute_interruption (void);
206 static void ref_stack_destroy (gpointer rs);
208 /* Spin lock for InterlockedXXX 64 bit functions */
209 #define mono_interlocked_lock() mono_os_mutex_lock (&interlocked_mutex)
210 #define mono_interlocked_unlock() mono_os_mutex_unlock (&interlocked_mutex)
211 static mono_mutex_t interlocked_mutex;
213 /* global count of thread interruptions requested */
214 static gint32 thread_interruption_requested = 0;
216 /* Event signaled when a thread changes its background mode */
217 static HANDLE background_change_event;
219 static gboolean shutting_down = FALSE;
221 static gint32 managed_thread_id_counter = 0;
223 /* Class lazy loading functions */
224 static GENERATE_GET_CLASS_WITH_CACHE (appdomain_unloaded_exception, System, AppDomainUnloadedException)
227 mono_threads_lock (void)
229 mono_locks_coop_acquire (&threads_mutex, ThreadsLock);
233 mono_threads_unlock (void)
235 mono_locks_coop_release (&threads_mutex, ThreadsLock);
240 get_next_managed_thread_id (void)
242 return InterlockedIncrement (&managed_thread_id_counter);
246 mono_thread_get_tls_key (void)
248 return current_object_key;
252 mono_thread_get_tls_offset (void)
257 if (current_object_key)
258 offset = current_object_key;
260 MONO_THREAD_VAR_OFFSET (tls_current_object,offset);
265 static inline MonoNativeThreadId
266 thread_get_tid (MonoInternalThread *thread)
268 /* We store the tid as a guint64 to keep the object layout constant between platforms */
269 return MONO_UINT_TO_NATIVE_THREAD_ID (thread->tid);
272 /* handle_store() and handle_remove() manage the array of threads that
273 * still need to be waited for when the main thread exits.
275 * If handle_store() returns FALSE the thread must not be started
276 * because Mono is shutting down.
278 static gboolean handle_store(MonoThread *thread, gboolean force_attach)
280 mono_threads_lock ();
282 THREAD_DEBUG (g_message ("%s: thread %p ID %"G_GSIZE_FORMAT, __func__, thread, (gsize)thread->internal_thread->tid));
284 if (threads_starting_up)
285 mono_g_hash_table_remove (threads_starting_up, thread);
287 if (shutting_down && !force_attach) {
288 mono_threads_unlock ();
293 MONO_GC_REGISTER_ROOT_FIXED (threads, MONO_ROOT_SOURCE_THREADING, "threads table");
294 threads=mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_VALUE_GC, MONO_ROOT_SOURCE_THREADING, "threads table");
297 /* We don't need to duplicate thread->handle, because it is
298 * only closed when the thread object is finalized by the GC.
300 g_assert (thread->internal_thread);
301 mono_g_hash_table_insert(threads, (gpointer)(gsize)(thread->internal_thread->tid),
302 thread->internal_thread);
304 mono_threads_unlock ();
309 static gboolean handle_remove(MonoInternalThread *thread)
312 gsize tid = thread->tid;
314 THREAD_DEBUG (g_message ("%s: thread ID %"G_GSIZE_FORMAT, __func__, tid));
316 mono_threads_lock ();
319 /* We have to check whether the thread object for the
320 * tid is still the same in the table because the
321 * thread might have been destroyed and the tid reused
322 * in the meantime, in which case the tid would be in
323 * the table, but with another thread object.
325 if (mono_g_hash_table_lookup (threads, (gpointer)tid) == thread) {
326 mono_g_hash_table_remove (threads, (gpointer)tid);
335 mono_threads_unlock ();
337 /* Don't close the handle here, wait for the object finalizer
338 * to do it. Otherwise, the following race condition applies:
340 * 1) Thread exits (and handle_remove() closes the handle)
342 * 2) Some other handle is reassigned the same slot
344 * 3) Another thread tries to join the first thread, and
345 * blocks waiting for the reassigned handle to be signalled
346 * (which might never happen). This is possible, because the
347 * thread calling Join() still has a reference to the first
353 static void ensure_synch_cs_set (MonoInternalThread *thread)
355 MonoCoopMutex *synch_cs;
357 if (thread->synch_cs != NULL) {
361 synch_cs = g_new0 (MonoCoopMutex, 1);
362 mono_coop_mutex_init_recursive (synch_cs);
364 if (InterlockedCompareExchangePointer ((gpointer *)&thread->synch_cs,
365 synch_cs, NULL) != NULL) {
366 /* Another thread must have installed this CS */
367 mono_coop_mutex_destroy (synch_cs);
373 lock_thread (MonoInternalThread *thread)
375 if (!thread->synch_cs)
376 ensure_synch_cs_set (thread);
378 g_assert (thread->synch_cs);
380 mono_coop_mutex_lock (thread->synch_cs);
384 unlock_thread (MonoInternalThread *thread)
386 mono_coop_mutex_unlock (thread->synch_cs);
389 static inline gboolean
390 is_appdomainunloaded_exception (MonoClass *klass)
392 return klass == mono_class_get_appdomain_unloaded_exception_class ();
395 static inline gboolean
396 is_threadabort_exception (MonoClass *klass)
398 return klass == mono_defaults.threadabortexception_class;
402 * NOTE: this function can be called also for threads different from the current one:
403 * make sure no code called from it will ever assume it is run on the thread that is
404 * getting cleaned up.
406 static void thread_cleanup (MonoInternalThread *thread)
408 g_assert (thread != NULL);
410 if (thread->abort_state_handle) {
411 mono_gchandle_free (thread->abort_state_handle);
412 thread->abort_state_handle = 0;
414 thread->abort_exc = NULL;
415 thread->current_appcontext = NULL;
418 * This is necessary because otherwise we might have
419 * cross-domain references which will not get cleaned up when
420 * the target domain is unloaded.
422 if (thread->cached_culture_info) {
424 for (i = 0; i < NUM_CACHED_CULTURES * 2; ++i)
425 mono_array_set (thread->cached_culture_info, MonoObject*, i, NULL);
429 * thread->synch_cs can be NULL if this was called after
430 * ves_icall_System_Threading_InternalThread_Thread_free_internal.
431 * This can happen only during shutdown.
432 * The shutting_down flag is not always set, so we can't assert on it.
434 if (thread->synch_cs)
435 LOCK_THREAD (thread);
437 thread->state |= ThreadState_Stopped;
438 thread->state &= ~ThreadState_Background;
440 if (thread->synch_cs)
441 UNLOCK_THREAD (thread);
444 An interruption request has leaked to cleanup. Adjust the global counter.
446 This can happen is the abort source thread finds the abortee (this) thread
447 in unmanaged code. If this thread never trips back to managed code or check
448 the local flag it will be left set and positively unbalance the global counter.
450 Leaving the counter unbalanced will cause a performance degradation since all threads
451 will now keep checking their local flags all the time.
453 if (InterlockedExchange (&thread->interruption_requested, 0))
454 InterlockedDecrement (&thread_interruption_requested);
456 /* if the thread is not in the hash it has been removed already */
457 if (!handle_remove (thread)) {
458 if (thread == mono_thread_internal_current ()) {
459 mono_domain_unset ();
460 mono_memory_barrier ();
462 /* This needs to be called even if handle_remove () fails */
463 if (mono_thread_cleanup_fn)
464 mono_thread_cleanup_fn (thread_get_tid (thread));
467 mono_release_type_locks (thread);
469 /* Can happen when we attach the profiler helper thread in order to heapshot. */
470 if (!mono_thread_info_lookup (MONO_UINT_TO_NATIVE_THREAD_ID (thread->tid))->tools_thread)
471 mono_profiler_thread_end (thread->tid);
473 mono_hazard_pointer_clear (mono_hazard_pointer_get (), 1);
475 if (thread == mono_thread_internal_current ()) {
477 * This will signal async signal handlers that the thread has exited.
478 * The profiler callback needs this to be set, so it cannot be done earlier.
480 mono_domain_unset ();
481 mono_memory_barrier ();
484 if (thread == mono_thread_internal_current ())
485 mono_thread_pop_appdomain_ref ();
487 thread->cached_culture_info = NULL;
489 mono_free_static_data (thread->static_data);
490 thread->static_data = NULL;
491 ref_stack_destroy (thread->appdomain_refs);
492 thread->appdomain_refs = NULL;
494 if (mono_thread_cleanup_fn)
495 mono_thread_cleanup_fn (thread_get_tid (thread));
497 if (mono_gc_is_moving ()) {
498 MONO_GC_UNREGISTER_ROOT (thread->thread_pinning_ref);
499 thread->thread_pinning_ref = NULL;
505 * A special static data offset (guint32) consists of 3 parts:
507 * [0] 6-bit index into the array of chunks.
508 * [6] 25-bit offset into the array.
509 * [31] Bit indicating thread or context static.
514 #if G_BYTE_ORDER != G_LITTLE_ENDIAN
525 } SpecialStaticOffset;
527 #define SPECIAL_STATIC_OFFSET_TYPE_THREAD 0
528 #define SPECIAL_STATIC_OFFSET_TYPE_CONTEXT 1
530 #define MAKE_SPECIAL_STATIC_OFFSET(index, offset, type) \
531 ((SpecialStaticOffset) { .fields = { (index), (offset), (type) } }.raw)
532 #define ACCESS_SPECIAL_STATIC_OFFSET(x,f) \
533 (((SpecialStaticOffset *) &(x))->fields.f)
536 get_thread_static_data (MonoInternalThread *thread, guint32 offset)
538 g_assert (ACCESS_SPECIAL_STATIC_OFFSET (offset, type) == SPECIAL_STATIC_OFFSET_TYPE_THREAD);
540 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
541 int off = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
543 return ((char *) thread->static_data [idx]) + off;
547 get_context_static_data (MonoAppContext *ctx, guint32 offset)
549 g_assert (ACCESS_SPECIAL_STATIC_OFFSET (offset, type) == SPECIAL_STATIC_OFFSET_TYPE_CONTEXT);
551 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
552 int off = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
554 return ((char *) ctx->static_data [idx]) + off;
558 get_current_thread_ptr_for_domain (MonoDomain *domain, MonoInternalThread *thread)
560 static MonoClassField *current_thread_field = NULL;
564 if (!current_thread_field) {
565 current_thread_field = mono_class_get_field_from_name (mono_defaults.thread_class, "current_thread");
566 g_assert (current_thread_field);
569 mono_class_vtable (domain, mono_defaults.thread_class);
570 mono_domain_lock (domain);
571 offset = GPOINTER_TO_UINT (g_hash_table_lookup (domain->special_static_fields, current_thread_field));
572 mono_domain_unlock (domain);
575 return (MonoThread **)get_thread_static_data (thread, offset);
579 set_current_thread_for_domain (MonoDomain *domain, MonoInternalThread *thread, MonoThread *current)
581 MonoThread **current_thread_ptr = get_current_thread_ptr_for_domain (domain, thread);
583 g_assert (current->obj.vtable->domain == domain);
585 g_assert (!*current_thread_ptr);
586 *current_thread_ptr = current;
590 create_thread_object (MonoDomain *domain)
593 MonoVTable *vt = mono_class_vtable (domain, mono_defaults.thread_class);
594 MonoThread *t = (MonoThread*)mono_object_new_mature (vt, &error);
595 /* only possible failure mode is OOM, from which we don't expect to recover. */
596 mono_error_assert_ok (&error);
601 new_thread_with_internal (MonoDomain *domain, MonoInternalThread *internal)
605 thread = create_thread_object (domain);
606 thread->priority = MONO_THREAD_PRIORITY_NORMAL;
608 MONO_OBJECT_SETREF (thread, internal_thread, internal);
613 static MonoInternalThread*
614 create_internal_thread (void)
617 MonoInternalThread *thread;
620 vt = mono_class_vtable (mono_get_root_domain (), mono_defaults.internal_thread_class);
621 thread = (MonoInternalThread*) mono_object_new_mature (vt, &error);
622 /* only possible failure mode is OOM, from which we don't exect to recover */
623 mono_error_assert_ok (&error);
625 thread->synch_cs = g_new0 (MonoCoopMutex, 1);
626 mono_coop_mutex_init_recursive (thread->synch_cs);
628 thread->apartment_state = ThreadApartmentState_Unknown;
629 thread->managed_id = get_next_managed_thread_id ();
630 if (mono_gc_is_moving ()) {
631 thread->thread_pinning_ref = thread;
632 MONO_GC_REGISTER_ROOT_PINNING (thread->thread_pinning_ref, MONO_ROOT_SOURCE_THREADING, "thread pinning reference");
639 init_root_domain_thread (MonoInternalThread *thread, MonoThread *candidate)
641 MonoDomain *domain = mono_get_root_domain ();
643 if (!candidate || candidate->obj.vtable->domain != domain) {
644 candidate = new_thread_with_internal (domain, thread);
646 set_current_thread_for_domain (domain, thread, candidate);
647 g_assert (!thread->root_domain_thread);
648 MONO_OBJECT_SETREF (thread, root_domain_thread, candidate);
652 static guint32 WINAPI start_wrapper_internal(void *data)
655 MonoThreadInfo *info;
656 StartInfo *start_info = (StartInfo *)data;
657 guint32 (*start_func)(void *);
661 * We don't create a local to hold start_info->obj, so hopefully it won't get pinned during a
664 MonoInternalThread *internal = start_info->obj->internal_thread;
665 MonoObject *start_delegate = start_info->delegate;
666 MonoDomain *domain = start_info->obj->obj.vtable->domain;
668 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper", __func__, mono_native_thread_id_get ()));
670 /* We can be sure start_info->obj->tid and
671 * start_info->obj->handle have been set, because the thread
672 * was created suspended, and these values were set before the
676 info = mono_thread_info_current ();
678 internal->thread_info = info;
679 internal->small_id = info->small_id;
683 SET_CURRENT_OBJECT (internal);
685 /* Every thread references the appdomain which created it */
686 mono_thread_push_appdomain_ref (domain);
688 if (!mono_domain_set (domain, FALSE)) {
689 /* No point in raising an appdomain_unloaded exception here */
690 /* FIXME: Cleanup here */
691 mono_thread_pop_appdomain_ref ();
695 start_func = start_info->func;
696 start_arg = start_info->obj->start_obj;
698 start_arg = start_info->start_arg;
700 /* We have to do this here because mono_thread_new_init()
701 requires that root_domain_thread is set up. */
702 thread_adjust_static_data (internal);
703 init_root_domain_thread (internal, start_info->obj);
705 /* This MUST be called before any managed code can be
706 * executed, as it calls the callback function that (for the
707 * jit) sets the lmf marker.
709 mono_thread_new_init (tid, &tid, start_func);
710 internal->stack_ptr = &tid;
711 if (domain != mono_get_root_domain ())
712 set_current_thread_for_domain (domain, internal, start_info->obj);
714 LIBGC_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT",%d) Setting thread stack to %p", __func__, mono_native_thread_id_get (), getpid (), thread->stack_ptr));
716 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Setting current_object_key to %p", __func__, mono_native_thread_id_get (), internal));
718 /* On 2.0 profile (and higher), set explicitly since state might have been
720 if (internal->apartment_state == ThreadApartmentState_Unknown)
721 internal->apartment_state = ThreadApartmentState_MTA;
723 mono_thread_init_apartment_state ();
725 if(internal->start_notify!=NULL) {
726 /* Let the thread that called Start() know we're
729 ReleaseSemaphore (internal->start_notify, 1, NULL);
733 THREAD_DEBUG (g_message ("%s: start_wrapper for %"G_GSIZE_FORMAT, __func__,
737 * Call this after calling start_notify, since the profiler callback might want
738 * to lock the thread, and the lock is held by thread_start () which waits for
741 mono_profiler_thread_start (tid);
743 /* if the name was set before starting, we didn't invoke the profiler callback */
744 if (internal->name) {
745 char *tname = g_utf16_to_utf8 (internal->name, internal->name_len, NULL, NULL, NULL);
746 mono_profiler_thread_name (internal->tid, tname);
747 mono_native_thread_set_name (MONO_UINT_TO_NATIVE_THREAD_ID (internal->tid), tname);
751 /* start_func is set only for unmanaged start functions */
753 start_func (start_arg);
756 g_assert (start_delegate != NULL);
757 args [0] = start_arg;
758 /* we may want to handle the exception here. See comment below on unhandled exceptions */
759 mono_runtime_delegate_invoke_checked (start_delegate, args, &error);
761 if (!mono_error_ok (&error)) {
762 MonoException *ex = mono_error_convert_to_exception (&error);
764 g_assert (ex != NULL);
765 MonoClass *klass = mono_object_get_class (&ex->object);
766 if ((mono_runtime_unhandled_exception_policy_get () != MONO_UNHANDLED_POLICY_LEGACY) &&
767 !is_threadabort_exception (klass)) {
768 mono_unhandled_exception (&ex->object);
769 mono_invoke_unhandled_exception_hook (&ex->object);
770 g_assert_not_reached ();
773 mono_error_cleanup (&error);
777 /* If the thread calls ExitThread at all, this remaining code
778 * will not be executed, but the main thread will eventually
779 * call thread_cleanup() on this thread's behalf.
782 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper terminating", __func__, mono_native_thread_id_get ()));
784 /* Do any cleanup needed for apartment state. This
785 * cannot be done in thread_cleanup since thread_cleanup could be
786 * called for a thread other than the current thread.
787 * mono_thread_cleanup_apartment_state cleans up apartment
788 * for the current thead */
789 mono_thread_cleanup_apartment_state ();
791 thread_cleanup (internal);
795 /* Remove the reference to the thread object in the TLS data,
796 * so the thread object can be finalized. This won't be
797 * reached if the thread threw an uncaught exception, so those
798 * thread handles will stay referenced :-( (This is due to
799 * missing support for scanning thread-specific data in the
800 * Boehm GC - the io-layer keeps a GC-visible hash of pointers
803 SET_CURRENT_OBJECT (NULL);
808 static gsize WINAPI start_wrapper(void *data)
812 /* Avoid scanning the frames above this frame during a GC */
813 mono_gc_set_stack_end ((void*)&dummy);
815 return start_wrapper_internal (data);
821 * Common thread creation code.
822 * LOCKING: Acquires the threads lock.
825 create_thread (MonoThread *thread, MonoInternalThread *internal, StartInfo *start_info, gboolean threadpool_thread, guint32 stack_size,
828 HANDLE thread_handle;
829 MonoNativeThreadId tid;
833 * Join joinable threads to prevent running out of threads since the finalizer
834 * thread might be blocked/backlogged.
836 mono_threads_join_threads ();
838 mono_error_init (error);
840 mono_threads_lock ();
843 mono_threads_unlock ();
846 if (threads_starting_up == NULL) {
847 MONO_GC_REGISTER_ROOT_FIXED (threads_starting_up, MONO_ROOT_SOURCE_THREADING, "starting threads table");
848 threads_starting_up = mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_KEY_VALUE_GC, MONO_ROOT_SOURCE_THREADING, "starting threads table");
850 mono_g_hash_table_insert (threads_starting_up, thread, thread);
851 mono_threads_unlock ();
853 internal->start_notify = CreateSemaphore (NULL, 0, 0x7fffffff, NULL);
854 if (!internal->start_notify) {
855 mono_threads_lock ();
856 mono_g_hash_table_remove (threads_starting_up, thread);
857 mono_threads_unlock ();
858 g_warning ("%s: CreateSemaphore error 0x%x", __func__, GetLastError ());
864 stack_size = default_stacksize_for_thread (internal);
866 /* Create suspended, so we can do some housekeeping before the thread
869 tp.priority = thread->priority;
870 tp.stack_size = stack_size;
871 tp.creation_flags = CREATE_SUSPENDED;
873 thread_handle = mono_threads_create_thread (start_wrapper, start_info, &tp, &tid);
875 if (thread_handle == NULL) {
876 /* The thread couldn't be created, so set an exception */
877 mono_threads_lock ();
878 mono_g_hash_table_remove (threads_starting_up, thread);
879 mono_threads_unlock ();
881 mono_error_set_execution_engine (error, "Couldn't create thread. Error 0x%x", GetLastError());
884 THREAD_DEBUG (g_message ("%s: Started thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread_handle));
886 internal->handle = thread_handle;
887 internal->tid = MONO_NATIVE_THREAD_ID_TO_UINT (tid);
889 internal->threadpool_thread = threadpool_thread;
890 if (threadpool_thread)
891 mono_thread_set_state (internal, ThreadState_Background);
893 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Launching thread %p (%"G_GSIZE_FORMAT")", __func__, mono_native_thread_id_get (), internal, (gsize)internal->tid));
895 /* Only store the handle when the thread is about to be
896 * launched, to avoid the main thread deadlocking while trying
897 * to clean up a thread that will never be signalled.
899 if (!handle_store (thread, FALSE))
902 mono_thread_info_resume (tid);
904 if (internal->start_notify) {
906 * Wait for the thread to set up its TLS data etc, so
907 * theres no potential race condition if someone tries
908 * to look up the data believing the thread has
911 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));
914 WaitForSingleObjectEx (internal->start_notify, INFINITE, FALSE);
917 CloseHandle (internal->start_notify);
918 internal->start_notify = NULL;
921 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));
926 void mono_thread_new_init (intptr_t tid, gpointer stack_start, gpointer func)
928 if (mono_thread_start_cb) {
929 mono_thread_start_cb (tid, stack_start, func);
933 void mono_threads_set_default_stacksize (guint32 stacksize)
935 default_stacksize = stacksize;
938 guint32 mono_threads_get_default_stacksize (void)
940 return default_stacksize;
944 * mono_thread_create_internal:
946 * ARG should not be a GC reference.
949 mono_thread_create_internal (MonoDomain *domain, gpointer func, gpointer arg, gboolean threadpool_thread, guint32 stack_size, MonoError *error)
952 MonoInternalThread *internal;
953 StartInfo *start_info;
956 mono_error_init (error);
958 thread = create_thread_object (domain);
959 thread->priority = MONO_THREAD_PRIORITY_NORMAL;
961 internal = create_internal_thread ();
963 MONO_OBJECT_SETREF (thread, internal_thread, internal);
965 start_info = g_new0 (StartInfo, 1);
966 start_info->func = (guint32 (*)(void *))func;
967 start_info->obj = thread;
968 start_info->start_arg = arg;
970 res = create_thread (thread, internal, start_info, threadpool_thread, stack_size, error);
971 return_val_if_nok (error, NULL);
973 /* Check that the managed and unmanaged layout of MonoInternalThread matches */
974 #ifndef MONO_CROSS_COMPILE
975 if (mono_check_corlib_version () == NULL)
976 g_assert (((char*)&internal->unused2 - (char*)internal) == mono_defaults.internal_thread_class->fields [mono_defaults.internal_thread_class->field.count - 1].offset);
983 mono_thread_create (MonoDomain *domain, gpointer func, gpointer arg)
986 if (!mono_thread_create_checked (domain, func, arg, &error))
987 mono_error_cleanup (&error);
991 mono_thread_create_checked (MonoDomain *domain, gpointer func, gpointer arg, MonoError *error)
993 return (NULL != mono_thread_create_internal (domain, func, arg, FALSE, 0, error));
997 mono_thread_attach (MonoDomain *domain)
999 MonoThread *thread = mono_thread_attach_full (domain, FALSE);
1005 mono_thread_attach_full (MonoDomain *domain, gboolean force_attach)
1007 MonoThreadInfo *info;
1008 MonoInternalThread *thread;
1009 MonoThread *current_thread;
1010 HANDLE thread_handle;
1011 MonoNativeThreadId tid;
1013 if ((thread = mono_thread_internal_current ())) {
1014 if (domain != mono_domain_get ())
1015 mono_domain_set (domain, TRUE);
1016 /* Already attached */
1017 return mono_thread_current ();
1020 if (!mono_gc_register_thread (&domain)) {
1021 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 ());
1024 thread = create_internal_thread ();
1026 thread_handle = mono_thread_info_open_handle ();
1027 g_assert (thread_handle);
1029 tid=mono_native_thread_id_get ();
1031 thread->handle = thread_handle;
1032 thread->tid = MONO_NATIVE_THREAD_ID_TO_UINT (tid);
1033 thread->stack_ptr = &tid;
1035 THREAD_DEBUG (g_message ("%s: Attached thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread_handle));
1037 info = mono_thread_info_current ();
1039 thread->thread_info = info;
1040 thread->small_id = info->small_id;
1042 current_thread = new_thread_with_internal (domain, thread);
1044 if (!handle_store (current_thread, force_attach)) {
1045 /* Mono is shutting down, so just wait for the end */
1047 mono_thread_info_sleep (10000, NULL);
1050 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Setting current_object_key to %p", __func__, mono_native_thread_id_get (), thread));
1052 SET_CURRENT_OBJECT (thread);
1053 mono_domain_set (domain, TRUE);
1055 thread_adjust_static_data (thread);
1057 init_root_domain_thread (thread, current_thread);
1059 if (domain != mono_get_root_domain ())
1060 set_current_thread_for_domain (domain, thread, current_thread);
1063 if (mono_thread_attach_cb) {
1067 mono_thread_info_get_stack_bounds (&staddr, &stsize);
1070 mono_thread_attach_cb (MONO_NATIVE_THREAD_ID_TO_UINT (tid), &tid);
1072 mono_thread_attach_cb (MONO_NATIVE_THREAD_ID_TO_UINT (tid), staddr + stsize);
1075 /* Can happen when we attach the profiler helper thread in order to heapshot. */
1076 if (!info->tools_thread)
1077 // FIXME: Need a separate callback
1078 mono_profiler_thread_start (MONO_NATIVE_THREAD_ID_TO_UINT (tid));
1080 return current_thread;
1084 mono_thread_detach_internal (MonoInternalThread *thread)
1086 g_return_if_fail (thread != NULL);
1088 THREAD_DEBUG (g_message ("%s: mono_thread_detach for %p (%"G_GSIZE_FORMAT")", __func__, thread, (gsize)thread->tid));
1090 thread_cleanup (thread);
1092 SET_CURRENT_OBJECT (NULL);
1093 mono_domain_unset ();
1095 /* Don't need to CloseHandle this thread, even though we took a
1096 * reference in mono_thread_attach (), because the GC will do it
1097 * when the Thread object is finalised.
1102 mono_thread_detach (MonoThread *thread)
1105 mono_thread_detach_internal (thread->internal_thread);
1109 * mono_thread_detach_if_exiting:
1111 * Detach the current thread from the runtime if it is exiting, i.e. it is running pthread dtors.
1112 * This should be used at the end of embedding code which calls into managed code, and which
1113 * can be called from pthread dtors, like dealloc: implementations in objective-c.
1116 mono_thread_detach_if_exiting (void)
1118 if (mono_thread_info_is_exiting ()) {
1119 MonoInternalThread *thread;
1121 thread = mono_thread_internal_current ();
1123 mono_thread_detach_internal (thread);
1124 mono_thread_info_detach ();
1132 mono_thread_exit (void)
1134 MonoInternalThread *thread = mono_thread_internal_current ();
1136 THREAD_DEBUG (g_message ("%s: mono_thread_exit for %p (%"G_GSIZE_FORMAT")", __func__, thread, (gsize)thread->tid));
1138 thread_cleanup (thread);
1139 SET_CURRENT_OBJECT (NULL);
1140 mono_domain_unset ();
1142 /* we could add a callback here for embedders to use. */
1143 if (mono_thread_get_main () && (thread == mono_thread_get_main ()->internal_thread))
1144 exit (mono_environment_exitcode_get ());
1145 mono_thread_info_exit ();
1149 ves_icall_System_Threading_Thread_ConstructInternalThread (MonoThread *this_obj)
1151 MonoInternalThread *internal;
1153 internal = create_internal_thread ();
1155 internal->state = ThreadState_Unstarted;
1157 InterlockedCompareExchangePointer ((volatile gpointer *)&this_obj->internal_thread, internal, NULL);
1161 ves_icall_System_Threading_Thread_Thread_internal (MonoThread *this_obj,
1165 StartInfo *start_info;
1166 MonoInternalThread *internal;
1169 THREAD_DEBUG (g_message("%s: Trying to start a new thread: this (%p) start (%p)", __func__, this_obj, start));
1171 if (!this_obj->internal_thread)
1172 ves_icall_System_Threading_Thread_ConstructInternalThread (this_obj);
1173 internal = this_obj->internal_thread;
1175 LOCK_THREAD (internal);
1177 if ((internal->state & ThreadState_Unstarted) == 0) {
1178 UNLOCK_THREAD (internal);
1179 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has already been started."));
1183 if ((internal->state & ThreadState_Aborted) != 0) {
1184 UNLOCK_THREAD (internal);
1187 /* This is freed in start_wrapper */
1188 start_info = g_new0 (StartInfo, 1);
1189 start_info->func = NULL;
1190 start_info->start_arg = NULL;
1191 start_info->delegate = start;
1192 start_info->obj = this_obj;
1193 g_assert (this_obj->obj.vtable->domain == mono_domain_get ());
1195 res = create_thread (this_obj, internal, start_info, FALSE, 0, &error);
1197 mono_error_cleanup (&error);
1198 UNLOCK_THREAD (internal);
1202 internal->state &= ~ThreadState_Unstarted;
1204 THREAD_DEBUG (g_message ("%s: Started thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread));
1206 UNLOCK_THREAD (internal);
1207 return internal->handle;
1211 * This is called from the finalizer of the internal thread object.
1214 ves_icall_System_Threading_InternalThread_Thread_free_internal (MonoInternalThread *this_obj, HANDLE thread)
1216 THREAD_DEBUG (g_message ("%s: Closing thread %p, handle %p", __func__, this, thread));
1219 * Since threads keep a reference to their thread object while running, by the time this function is called,
1220 * the thread has already exited/detached, i.e. thread_cleanup () has ran. The exception is during shutdown,
1221 * when thread_cleanup () can be called after this.
1224 CloseHandle (thread);
1226 if (this_obj->synch_cs) {
1227 MonoCoopMutex *synch_cs = this_obj->synch_cs;
1228 this_obj->synch_cs = NULL;
1229 mono_coop_mutex_destroy (synch_cs);
1233 if (this_obj->name) {
1234 void *name = this_obj->name;
1235 this_obj->name = NULL;
1241 ves_icall_System_Threading_Thread_Sleep_internal(gint32 ms)
1244 MonoInternalThread *thread = mono_thread_internal_current ();
1246 THREAD_DEBUG (g_message ("%s: Sleeping for %d ms", __func__, ms));
1248 if (mono_thread_current_check_pending_interrupt ())
1252 gboolean alerted = FALSE;
1254 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1256 res = mono_thread_info_sleep (ms, &alerted);
1258 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1261 MonoException* exc = mono_thread_execute_interruption ();
1263 mono_raise_exception (exc);
1275 void ves_icall_System_Threading_Thread_SpinWait_nop (void)
1280 ves_icall_System_Threading_Thread_GetDomainID (void)
1282 return mono_domain_get()->domain_id;
1286 ves_icall_System_Threading_Thread_Yield (void)
1288 return mono_thread_info_yield ();
1292 * mono_thread_get_name:
1294 * Return the name of the thread. NAME_LEN is set to the length of the name.
1295 * Return NULL if the thread has no name. The returned memory is owned by the
1299 mono_thread_get_name (MonoInternalThread *this_obj, guint32 *name_len)
1303 LOCK_THREAD (this_obj);
1305 if (!this_obj->name) {
1309 *name_len = this_obj->name_len;
1310 res = g_new (gunichar2, this_obj->name_len);
1311 memcpy (res, this_obj->name, sizeof (gunichar2) * this_obj->name_len);
1314 UNLOCK_THREAD (this_obj);
1320 * mono_thread_get_name_utf8:
1322 * Return the name of the thread in UTF-8.
1323 * Return NULL if the thread has no name.
1324 * The returned memory is owned by the caller.
1327 mono_thread_get_name_utf8 (MonoThread *thread)
1332 MonoInternalThread *internal = thread->internal_thread;
1333 if (internal == NULL)
1336 LOCK_THREAD (internal);
1338 char *tname = g_utf16_to_utf8 (internal->name, internal->name_len, NULL, NULL, NULL);
1340 UNLOCK_THREAD (internal);
1346 * mono_thread_get_managed_id:
1348 * Return the Thread.ManagedThreadId value of `thread`.
1349 * Returns -1 if `thread` is NULL.
1352 mono_thread_get_managed_id (MonoThread *thread)
1357 MonoInternalThread *internal = thread->internal_thread;
1358 if (internal == NULL)
1361 int32_t id = internal->managed_id;
1367 ves_icall_System_Threading_Thread_GetName_internal (MonoInternalThread *this_obj)
1372 mono_error_init (&error);
1374 LOCK_THREAD (this_obj);
1376 if (!this_obj->name)
1379 str = mono_string_new_utf16_checked (mono_domain_get (), this_obj->name, this_obj->name_len, &error);
1381 UNLOCK_THREAD (this_obj);
1383 if (mono_error_set_pending_exception (&error))
1390 mono_thread_set_name_internal (MonoInternalThread *this_obj, MonoString *name, gboolean permanent, MonoError *error)
1392 LOCK_THREAD (this_obj);
1394 mono_error_init (error);
1396 if ((this_obj->flags & MONO_THREAD_FLAG_NAME_SET)) {
1397 UNLOCK_THREAD (this_obj);
1399 mono_error_set_invalid_operation (error, "Thread.Name can only be set once.");
1402 if (this_obj->name) {
1403 g_free (this_obj->name);
1404 this_obj->name_len = 0;
1407 this_obj->name = g_new (gunichar2, mono_string_length (name));
1408 memcpy (this_obj->name, mono_string_chars (name), mono_string_length (name) * 2);
1409 this_obj->name_len = mono_string_length (name);
1412 this_obj->flags |= MONO_THREAD_FLAG_NAME_SET;
1415 this_obj->name = NULL;
1418 UNLOCK_THREAD (this_obj);
1420 if (this_obj->name && this_obj->tid) {
1421 char *tname = mono_string_to_utf8_checked (name, error);
1422 return_if_nok (error);
1423 mono_profiler_thread_name (this_obj->tid, tname);
1424 mono_native_thread_set_name (thread_get_tid (this_obj), tname);
1430 ves_icall_System_Threading_Thread_SetName_internal (MonoInternalThread *this_obj, MonoString *name)
1433 mono_thread_set_name_internal (this_obj, name, TRUE, &error);
1434 mono_error_set_pending_exception (&error);
1438 * ves_icall_System_Threading_Thread_GetPriority_internal:
1439 * @param this_obj: The MonoInternalThread on which to operate.
1441 * Gets the priority of the given thread.
1442 * @return: The priority of the given thread.
1445 ves_icall_System_Threading_Thread_GetPriority (MonoThread *this_obj)
1448 MonoInternalThread *internal = this_obj->internal_thread;
1450 LOCK_THREAD (internal);
1451 if (internal->handle != NULL)
1452 priority = mono_thread_info_get_priority ((MonoThreadInfo*) internal->thread_info);
1454 priority = this_obj->priority;
1455 UNLOCK_THREAD (internal);
1460 * ves_icall_System_Threading_Thread_SetPriority_internal:
1461 * @param this_obj: The MonoInternalThread on which to operate.
1462 * @param priority: The priority to set.
1464 * Sets the priority of the given thread.
1467 ves_icall_System_Threading_Thread_SetPriority (MonoThread *this_obj, int priority)
1469 MonoInternalThread *internal = this_obj->internal_thread;
1471 LOCK_THREAD (internal);
1472 this_obj->priority = priority;
1473 if (internal->handle != NULL)
1474 mono_thread_info_set_priority ((MonoThreadInfo*) internal->thread_info, this_obj->priority);
1475 UNLOCK_THREAD (internal);
1478 /* If the array is already in the requested domain, we just return it,
1479 otherwise we return a copy in that domain. */
1481 byte_array_to_domain (MonoArray *arr, MonoDomain *domain, MonoError *error)
1485 mono_error_init (error);
1489 if (mono_object_domain (arr) == domain)
1492 copy = mono_array_new_checked (domain, mono_defaults.byte_class, arr->max_length, error);
1493 memmove (mono_array_addr (copy, guint8, 0), mono_array_addr (arr, guint8, 0), arr->max_length);
1498 ves_icall_System_Threading_Thread_ByteArrayToRootDomain (MonoArray *arr)
1501 MonoArray *result = byte_array_to_domain (arr, mono_get_root_domain (), &error);
1502 mono_error_set_pending_exception (&error);
1507 ves_icall_System_Threading_Thread_ByteArrayToCurrentDomain (MonoArray *arr)
1510 MonoArray *result = byte_array_to_domain (arr, mono_domain_get (), &error);
1511 mono_error_set_pending_exception (&error);
1516 mono_thread_current (void)
1518 MonoDomain *domain = mono_domain_get ();
1519 MonoInternalThread *internal = mono_thread_internal_current ();
1520 MonoThread **current_thread_ptr;
1522 g_assert (internal);
1523 current_thread_ptr = get_current_thread_ptr_for_domain (domain, internal);
1525 if (!*current_thread_ptr) {
1526 g_assert (domain != mono_get_root_domain ());
1527 *current_thread_ptr = new_thread_with_internal (domain, internal);
1529 return *current_thread_ptr;
1532 /* Return the thread object belonging to INTERNAL in the current domain */
1534 mono_thread_current_for_thread (MonoInternalThread *internal)
1536 MonoDomain *domain = mono_domain_get ();
1537 MonoThread **current_thread_ptr;
1539 g_assert (internal);
1540 current_thread_ptr = get_current_thread_ptr_for_domain (domain, internal);
1542 if (!*current_thread_ptr) {
1543 g_assert (domain != mono_get_root_domain ());
1544 *current_thread_ptr = new_thread_with_internal (domain, internal);
1546 return *current_thread_ptr;
1550 mono_thread_internal_current (void)
1552 MonoInternalThread *res = GET_CURRENT_OBJECT ();
1553 THREAD_DEBUG (g_message ("%s: returning %p", __func__, res));
1558 ves_icall_System_Threading_Thread_Join_internal(MonoThread *this_obj, int ms)
1560 MonoInternalThread *thread = this_obj->internal_thread;
1561 HANDLE handle = thread->handle;
1562 MonoInternalThread *cur_thread = mono_thread_internal_current ();
1565 if (mono_thread_current_check_pending_interrupt ())
1568 LOCK_THREAD (thread);
1570 if ((thread->state & ThreadState_Unstarted) != 0) {
1571 UNLOCK_THREAD (thread);
1573 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started."));
1577 UNLOCK_THREAD (thread);
1582 THREAD_DEBUG (g_message ("%s: joining thread handle %p, %d ms", __func__, handle, ms));
1584 mono_thread_set_state (cur_thread, ThreadState_WaitSleepJoin);
1587 ret=WaitForSingleObjectEx (handle, ms, TRUE);
1590 mono_thread_clr_state (cur_thread, ThreadState_WaitSleepJoin);
1592 if(ret==WAIT_OBJECT_0) {
1593 THREAD_DEBUG (g_message ("%s: join successful", __func__));
1598 THREAD_DEBUG (g_message ("%s: join failed", __func__));
1603 #define MANAGED_WAIT_FAILED 0x7fffffff
1606 map_native_wait_result_to_managed (gint32 val)
1608 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1609 return val == WAIT_FAILED ? MANAGED_WAIT_FAILED : val;
1613 mono_wait_uninterrupted (MonoInternalThread *thread, guint32 numhandles, gpointer *handles, gboolean waitall, gint32 ms, MonoError *error)
1621 mono_error_init (error);
1623 start = (ms == -1) ? 0 : mono_100ns_ticks ();
1626 if (numhandles != 1)
1627 ret = WaitForMultipleObjectsEx (numhandles, handles, waitall, wait, TRUE);
1629 ret = WaitForSingleObjectEx (handles [0], ms, TRUE);
1632 if (ret != WAIT_IO_COMPLETION)
1635 exc = mono_thread_execute_interruption ();
1637 mono_error_set_exception_instance (error, exc);
1644 /* Re-calculate ms according to the time passed */
1645 diff_ms = (gint32)((mono_100ns_ticks () - start) / 10000);
1646 if (diff_ms >= ms) {
1650 wait = ms - diff_ms;
1656 gint32 ves_icall_System_Threading_WaitHandle_WaitAll_internal(MonoArray *mono_handles, gint32 ms)
1663 MonoObject *waitHandle;
1664 MonoInternalThread *thread = mono_thread_internal_current ();
1666 /* Do this WaitSleepJoin check before creating objects */
1667 if (mono_thread_current_check_pending_interrupt ())
1668 return map_native_wait_result_to_managed (WAIT_FAILED);
1670 /* We fail in managed if the array has more than 64 elements */
1671 numhandles = (guint32)mono_array_length(mono_handles);
1672 handles = g_new0(HANDLE, numhandles);
1674 for(i = 0; i < numhandles; i++) {
1675 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
1676 handles [i] = mono_wait_handle_get_handle ((MonoWaitHandle *) waitHandle);
1683 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1685 ret = mono_wait_uninterrupted (thread, numhandles, handles, TRUE, ms, &error);
1687 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1691 mono_error_set_pending_exception (&error);
1693 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1694 return map_native_wait_result_to_managed (ret);
1697 gint32 ves_icall_System_Threading_WaitHandle_WaitAny_internal(MonoArray *mono_handles, gint32 ms)
1700 HANDLE handles [MAXIMUM_WAIT_OBJECTS];
1701 uintptr_t numhandles;
1704 MonoObject *waitHandle;
1705 MonoInternalThread *thread = mono_thread_internal_current ();
1707 /* Do this WaitSleepJoin check before creating objects */
1708 if (mono_thread_current_check_pending_interrupt ())
1709 return map_native_wait_result_to_managed (WAIT_FAILED);
1711 numhandles = mono_array_length(mono_handles);
1712 if (numhandles > MAXIMUM_WAIT_OBJECTS)
1713 return map_native_wait_result_to_managed (WAIT_FAILED);
1715 for(i = 0; i < numhandles; i++) {
1716 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
1717 handles [i] = mono_wait_handle_get_handle ((MonoWaitHandle *) waitHandle);
1724 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1726 ret = mono_wait_uninterrupted (thread, numhandles, handles, FALSE, ms, &error);
1728 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1730 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") returning %d", __func__, mono_native_thread_id_get (), ret));
1732 mono_error_set_pending_exception (&error);
1734 * These need to be here. See MSDN dos on WaitForMultipleObjects.
1736 if (ret >= WAIT_OBJECT_0 && ret <= WAIT_OBJECT_0 + numhandles - 1) {
1737 return map_native_wait_result_to_managed (ret - WAIT_OBJECT_0);
1739 else if (ret >= WAIT_ABANDONED_0 && ret <= WAIT_ABANDONED_0 + numhandles - 1) {
1740 return map_native_wait_result_to_managed (ret - WAIT_ABANDONED_0);
1743 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1744 return map_native_wait_result_to_managed (ret);
1748 gint32 ves_icall_System_Threading_WaitHandle_WaitOne_internal(HANDLE handle, gint32 ms)
1752 MonoInternalThread *thread = mono_thread_internal_current ();
1754 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") waiting for %p, %d ms", __func__, mono_native_thread_id_get (), handle, ms));
1760 if (mono_thread_current_check_pending_interrupt ())
1761 return map_native_wait_result_to_managed (WAIT_FAILED);
1763 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1765 ret = mono_wait_uninterrupted (thread, 1, &handle, FALSE, ms, &error);
1767 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1769 mono_error_set_pending_exception (&error);
1770 return map_native_wait_result_to_managed (ret);
1774 ves_icall_System_Threading_WaitHandle_SignalAndWait_Internal (HANDLE toSignal, HANDLE toWait, gint32 ms)
1777 MonoInternalThread *thread = mono_thread_internal_current ();
1782 if (mono_thread_current_check_pending_interrupt ())
1783 return map_native_wait_result_to_managed (WAIT_FAILED);
1785 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1788 ret = SignalObjectAndWait (toSignal, toWait, ms, TRUE);
1791 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1793 return map_native_wait_result_to_managed (ret);
1796 HANDLE ves_icall_System_Threading_Mutex_CreateMutex_internal (MonoBoolean owned, MonoString *name, MonoBoolean *created)
1803 mutex = CreateMutex (NULL, owned, NULL);
1805 mutex = CreateMutex (NULL, owned, mono_string_chars (name));
1807 if (GetLastError () == ERROR_ALREADY_EXISTS) {
1815 MonoBoolean ves_icall_System_Threading_Mutex_ReleaseMutex_internal (HANDLE handle ) {
1816 return(ReleaseMutex (handle));
1819 HANDLE ves_icall_System_Threading_Mutex_OpenMutex_internal (MonoString *name,
1825 *error = ERROR_SUCCESS;
1827 ret = OpenMutex (rights, FALSE, mono_string_chars (name));
1829 *error = GetLastError ();
1836 HANDLE ves_icall_System_Threading_Semaphore_CreateSemaphore_internal (gint32 initialCount, gint32 maximumCount, MonoString *name, gint32 *error)
1841 sem = CreateSemaphore (NULL, initialCount, maximumCount, NULL);
1843 sem = CreateSemaphore (NULL, initialCount, maximumCount,
1844 mono_string_chars (name));
1847 *error = GetLastError ();
1851 MonoBoolean ves_icall_System_Threading_Semaphore_ReleaseSemaphore_internal (HANDLE handle, gint32 releaseCount, gint32 *prevcount)
1853 return ReleaseSemaphore (handle, releaseCount, prevcount);
1856 HANDLE ves_icall_System_Threading_Semaphore_OpenSemaphore_internal (MonoString *name, gint32 rights, gint32 *error)
1860 sem = OpenSemaphore (rights, FALSE, mono_string_chars (name));
1861 *error = GetLastError ();
1866 HANDLE ves_icall_System_Threading_Events_CreateEvent_internal (MonoBoolean manual, MonoBoolean initial, MonoString *name, MonoBoolean *created)
1873 event = CreateEvent (NULL, manual, initial, NULL);
1875 event = CreateEvent (NULL, manual, initial,
1876 mono_string_chars (name));
1878 if (GetLastError () == ERROR_ALREADY_EXISTS) {
1886 gboolean ves_icall_System_Threading_Events_SetEvent_internal (HANDLE handle) {
1887 return (SetEvent(handle));
1890 gboolean ves_icall_System_Threading_Events_ResetEvent_internal (HANDLE handle) {
1891 return (ResetEvent(handle));
1895 ves_icall_System_Threading_Events_CloseEvent_internal (HANDLE handle) {
1896 CloseHandle (handle);
1899 HANDLE ves_icall_System_Threading_Events_OpenEvent_internal (MonoString *name,
1905 *error = ERROR_SUCCESS;
1907 ret = OpenEvent (rights, FALSE, mono_string_chars (name));
1909 *error = GetLastError ();
1915 gint32 ves_icall_System_Threading_Interlocked_Increment_Int (gint32 *location)
1917 return InterlockedIncrement (location);
1920 gint64 ves_icall_System_Threading_Interlocked_Increment_Long (gint64 *location)
1922 #if SIZEOF_VOID_P == 4
1923 if (G_UNLIKELY ((size_t)location & 0x7)) {
1925 mono_interlocked_lock ();
1928 mono_interlocked_unlock ();
1932 return InterlockedIncrement64 (location);
1935 gint32 ves_icall_System_Threading_Interlocked_Decrement_Int (gint32 *location)
1937 return InterlockedDecrement(location);
1940 gint64 ves_icall_System_Threading_Interlocked_Decrement_Long (gint64 * location)
1942 #if SIZEOF_VOID_P == 4
1943 if (G_UNLIKELY ((size_t)location & 0x7)) {
1945 mono_interlocked_lock ();
1948 mono_interlocked_unlock ();
1952 return InterlockedDecrement64 (location);
1955 gint32 ves_icall_System_Threading_Interlocked_Exchange_Int (gint32 *location, gint32 value)
1957 return InterlockedExchange(location, value);
1960 MonoObject * ves_icall_System_Threading_Interlocked_Exchange_Object (MonoObject **location, MonoObject *value)
1963 res = (MonoObject *) InterlockedExchangePointer((gpointer *) location, value);
1964 mono_gc_wbarrier_generic_nostore (location);
1968 gpointer ves_icall_System_Threading_Interlocked_Exchange_IntPtr (gpointer *location, gpointer value)
1970 return InterlockedExchangePointer(location, value);
1973 gfloat ves_icall_System_Threading_Interlocked_Exchange_Single (gfloat *location, gfloat value)
1975 IntFloatUnion val, ret;
1978 ret.ival = InterlockedExchange((gint32 *) location, val.ival);
1984 ves_icall_System_Threading_Interlocked_Exchange_Long (gint64 *location, gint64 value)
1986 #if SIZEOF_VOID_P == 4
1987 if (G_UNLIKELY ((size_t)location & 0x7)) {
1989 mono_interlocked_lock ();
1992 mono_interlocked_unlock ();
1996 return InterlockedExchange64 (location, value);
2000 ves_icall_System_Threading_Interlocked_Exchange_Double (gdouble *location, gdouble value)
2002 LongDoubleUnion val, ret;
2005 ret.ival = (gint64)InterlockedExchange64((gint64 *) location, val.ival);
2010 gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int(gint32 *location, gint32 value, gint32 comparand)
2012 return InterlockedCompareExchange(location, value, comparand);
2015 gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int_Success(gint32 *location, gint32 value, gint32 comparand, MonoBoolean *success)
2017 gint32 r = InterlockedCompareExchange(location, value, comparand);
2018 *success = r == comparand;
2022 MonoObject * ves_icall_System_Threading_Interlocked_CompareExchange_Object (MonoObject **location, MonoObject *value, MonoObject *comparand)
2025 res = (MonoObject *) InterlockedCompareExchangePointer((gpointer *) location, value, comparand);
2026 mono_gc_wbarrier_generic_nostore (location);
2030 gpointer ves_icall_System_Threading_Interlocked_CompareExchange_IntPtr(gpointer *location, gpointer value, gpointer comparand)
2032 return InterlockedCompareExchangePointer(location, value, comparand);
2035 gfloat ves_icall_System_Threading_Interlocked_CompareExchange_Single (gfloat *location, gfloat value, gfloat comparand)
2037 IntFloatUnion val, ret, cmp;
2040 cmp.fval = comparand;
2041 ret.ival = InterlockedCompareExchange((gint32 *) location, val.ival, cmp.ival);
2047 ves_icall_System_Threading_Interlocked_CompareExchange_Double (gdouble *location, gdouble value, gdouble comparand)
2049 #if SIZEOF_VOID_P == 8
2050 LongDoubleUnion val, comp, ret;
2053 comp.fval = comparand;
2054 ret.ival = (gint64)InterlockedCompareExchangePointer((gpointer *) location, (gpointer)val.ival, (gpointer)comp.ival);
2060 mono_interlocked_lock ();
2062 if (old == comparand)
2064 mono_interlocked_unlock ();
2071 ves_icall_System_Threading_Interlocked_CompareExchange_Long (gint64 *location, gint64 value, gint64 comparand)
2073 #if SIZEOF_VOID_P == 4
2074 if (G_UNLIKELY ((size_t)location & 0x7)) {
2076 mono_interlocked_lock ();
2078 if (old == comparand)
2080 mono_interlocked_unlock ();
2084 return InterlockedCompareExchange64 (location, value, comparand);
2088 ves_icall_System_Threading_Interlocked_CompareExchange_T (MonoObject **location, MonoObject *value, MonoObject *comparand)
2091 res = (MonoObject *)InterlockedCompareExchangePointer ((volatile gpointer *)location, value, comparand);
2092 mono_gc_wbarrier_generic_nostore (location);
2097 ves_icall_System_Threading_Interlocked_Exchange_T (MonoObject **location, MonoObject *value)
2100 MONO_CHECK_NULL (location, NULL);
2101 res = (MonoObject *)InterlockedExchangePointer ((volatile gpointer *)location, value);
2102 mono_gc_wbarrier_generic_nostore (location);
2107 ves_icall_System_Threading_Interlocked_Add_Int (gint32 *location, gint32 value)
2109 return InterlockedAdd (location, value);
2113 ves_icall_System_Threading_Interlocked_Add_Long (gint64 *location, gint64 value)
2115 #if SIZEOF_VOID_P == 4
2116 if (G_UNLIKELY ((size_t)location & 0x7)) {
2118 mono_interlocked_lock ();
2121 mono_interlocked_unlock ();
2125 return InterlockedAdd64 (location, value);
2129 ves_icall_System_Threading_Interlocked_Read_Long (gint64 *location)
2131 #if SIZEOF_VOID_P == 4
2132 if (G_UNLIKELY ((size_t)location & 0x7)) {
2134 mono_interlocked_lock ();
2136 mono_interlocked_unlock ();
2140 return InterlockedRead64 (location);
2144 ves_icall_System_Threading_Thread_MemoryBarrier (void)
2146 mono_memory_barrier ();
2150 ves_icall_System_Threading_Thread_ClrState (MonoInternalThread* this_obj, guint32 state)
2152 mono_thread_clr_state (this_obj, (MonoThreadState)state);
2154 if (state & ThreadState_Background) {
2155 /* If the thread changes the background mode, the main thread has to
2156 * be notified, since it has to rebuild the list of threads to
2159 SetEvent (background_change_event);
2164 ves_icall_System_Threading_Thread_SetState (MonoInternalThread* this_obj, guint32 state)
2166 mono_thread_set_state (this_obj, (MonoThreadState)state);
2168 if (state & ThreadState_Background) {
2169 /* If the thread changes the background mode, the main thread has to
2170 * be notified, since it has to rebuild the list of threads to
2173 SetEvent (background_change_event);
2178 ves_icall_System_Threading_Thread_GetState (MonoInternalThread* this_obj)
2182 LOCK_THREAD (this_obj);
2184 state = this_obj->state;
2186 UNLOCK_THREAD (this_obj);
2191 void ves_icall_System_Threading_Thread_Interrupt_internal (MonoThread *this_obj)
2193 MonoInternalThread *current;
2195 MonoInternalThread *thread = this_obj->internal_thread;
2197 LOCK_THREAD (thread);
2199 current = mono_thread_internal_current ();
2201 thread->thread_interrupt_requested = TRUE;
2202 throw_ = current != thread && (thread->state & ThreadState_WaitSleepJoin);
2204 UNLOCK_THREAD (thread);
2207 async_abort_internal (thread, FALSE);
2212 * mono_thread_current_check_pending_interrupt:
2214 * Checks if there's a interruption request and set the pending exception if so.
2216 * @returns true if a pending exception was set
2219 mono_thread_current_check_pending_interrupt (void)
2221 MonoInternalThread *thread = mono_thread_internal_current ();
2222 gboolean throw_ = FALSE;
2224 LOCK_THREAD (thread);
2226 if (thread->thread_interrupt_requested) {
2228 thread->thread_interrupt_requested = FALSE;
2231 UNLOCK_THREAD (thread);
2234 mono_set_pending_exception (mono_get_exception_thread_interrupted ());
2239 request_thread_abort (MonoInternalThread *thread, MonoObject *state)
2241 LOCK_THREAD (thread);
2243 if ((thread->state & ThreadState_AbortRequested) != 0 ||
2244 (thread->state & ThreadState_StopRequested) != 0 ||
2245 (thread->state & ThreadState_Stopped) != 0)
2247 UNLOCK_THREAD (thread);
2251 if ((thread->state & ThreadState_Unstarted) != 0) {
2252 thread->state |= ThreadState_Aborted;
2253 UNLOCK_THREAD (thread);
2257 thread->state |= ThreadState_AbortRequested;
2258 if (thread->abort_state_handle)
2259 mono_gchandle_free (thread->abort_state_handle);
2261 thread->abort_state_handle = mono_gchandle_new (state, FALSE);
2262 g_assert (thread->abort_state_handle);
2264 thread->abort_state_handle = 0;
2266 thread->abort_exc = NULL;
2268 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));
2270 /* During shutdown, we can't wait for other threads */
2272 /* Make sure the thread is awake */
2273 mono_thread_resume (thread);
2275 UNLOCK_THREAD (thread);
2280 ves_icall_System_Threading_Thread_Abort (MonoInternalThread *thread, MonoObject *state)
2282 if (!request_thread_abort (thread, state))
2285 if (thread == mono_thread_internal_current ()) {
2287 self_abort_internal (&error);
2288 mono_error_set_pending_exception (&error);
2290 async_abort_internal (thread, TRUE);
2295 * mono_thread_internal_abort:
2297 * Request thread @thread to be aborted.
2299 * @thread MUST NOT be the current thread.
2302 mono_thread_internal_abort (MonoInternalThread *thread)
2304 g_assert (thread != mono_thread_internal_current ());
2306 if (!request_thread_abort (thread, NULL))
2308 async_abort_internal (thread, TRUE);
2312 ves_icall_System_Threading_Thread_ResetAbort (MonoThread *this_obj)
2314 MonoInternalThread *thread = mono_thread_internal_current ();
2315 gboolean was_aborting;
2317 LOCK_THREAD (thread);
2318 was_aborting = thread->state & ThreadState_AbortRequested;
2319 thread->state &= ~ThreadState_AbortRequested;
2320 UNLOCK_THREAD (thread);
2322 if (!was_aborting) {
2323 const char *msg = "Unable to reset abort because no abort was requested";
2324 mono_set_pending_exception (mono_get_exception_thread_state (msg));
2327 thread->abort_exc = NULL;
2328 if (thread->abort_state_handle) {
2329 mono_gchandle_free (thread->abort_state_handle);
2330 /* This is actually not necessary - the handle
2331 only counts if the exception is set */
2332 thread->abort_state_handle = 0;
2337 mono_thread_internal_reset_abort (MonoInternalThread *thread)
2339 LOCK_THREAD (thread);
2341 thread->state &= ~ThreadState_AbortRequested;
2343 if (thread->abort_exc) {
2344 thread->abort_exc = NULL;
2345 if (thread->abort_state_handle) {
2346 mono_gchandle_free (thread->abort_state_handle);
2347 /* This is actually not necessary - the handle
2348 only counts if the exception is set */
2349 thread->abort_state_handle = 0;
2353 UNLOCK_THREAD (thread);
2357 ves_icall_System_Threading_Thread_GetAbortExceptionState (MonoThread *this_obj)
2360 MonoInternalThread *thread = this_obj->internal_thread;
2361 MonoObject *state, *deserialized = NULL;
2364 if (!thread->abort_state_handle)
2367 state = mono_gchandle_get_target (thread->abort_state_handle);
2370 domain = mono_domain_get ();
2371 if (mono_object_domain (state) == domain)
2374 deserialized = mono_object_xdomain_representation (state, domain, &error);
2376 if (!deserialized) {
2377 MonoException *invalid_op_exc = mono_get_exception_invalid_operation ("Thread.ExceptionState cannot access an ExceptionState from a different AppDomain");
2378 if (!is_ok (&error)) {
2379 MonoObject *exc = (MonoObject*)mono_error_convert_to_exception (&error);
2380 MONO_OBJECT_SETREF (invalid_op_exc, inner_ex, exc);
2382 mono_set_pending_exception (invalid_op_exc);
2386 return deserialized;
2390 mono_thread_suspend (MonoInternalThread *thread)
2392 LOCK_THREAD (thread);
2394 if ((thread->state & ThreadState_Unstarted) != 0 ||
2395 (thread->state & ThreadState_Aborted) != 0 ||
2396 (thread->state & ThreadState_Stopped) != 0)
2398 UNLOCK_THREAD (thread);
2402 if ((thread->state & ThreadState_Suspended) != 0 ||
2403 (thread->state & ThreadState_SuspendRequested) != 0 ||
2404 (thread->state & ThreadState_StopRequested) != 0)
2406 UNLOCK_THREAD (thread);
2410 thread->state |= ThreadState_SuspendRequested;
2412 if (thread == mono_thread_internal_current ()) {
2413 /* calls UNLOCK_THREAD (thread) */
2414 self_suspend_internal ();
2416 /* calls UNLOCK_THREAD (thread) */
2417 async_suspend_internal (thread, FALSE);
2424 ves_icall_System_Threading_Thread_Suspend (MonoThread *this_obj)
2426 if (!mono_thread_suspend (this_obj->internal_thread)) {
2427 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2432 /* LOCKING: LOCK_THREAD(thread) must be held */
2434 mono_thread_resume (MonoInternalThread *thread)
2436 if ((thread->state & ThreadState_SuspendRequested) != 0) {
2437 thread->state &= ~ThreadState_SuspendRequested;
2441 if ((thread->state & ThreadState_Suspended) == 0 ||
2442 (thread->state & ThreadState_Unstarted) != 0 ||
2443 (thread->state & ThreadState_Aborted) != 0 ||
2444 (thread->state & ThreadState_Stopped) != 0)
2449 UNLOCK_THREAD (thread);
2451 /* Awake the thread */
2452 if (!mono_thread_info_resume (thread_get_tid (thread)))
2455 LOCK_THREAD (thread);
2457 thread->state &= ~ThreadState_Suspended;
2463 ves_icall_System_Threading_Thread_Resume (MonoThread *thread)
2465 if (!thread->internal_thread) {
2466 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2468 LOCK_THREAD (thread->internal_thread);
2469 if (!mono_thread_resume (thread->internal_thread))
2470 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2471 UNLOCK_THREAD (thread->internal_thread);
2476 mono_threads_is_critical_method (MonoMethod *method)
2478 switch (method->wrapper_type) {
2479 case MONO_WRAPPER_RUNTIME_INVOKE:
2480 case MONO_WRAPPER_XDOMAIN_INVOKE:
2481 case MONO_WRAPPER_XDOMAIN_DISPATCH:
2488 find_wrapper (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
2493 if (mono_threads_is_critical_method (m)) {
2494 *((gboolean*)data) = TRUE;
2501 is_running_protected_wrapper (void)
2503 gboolean found = FALSE;
2504 mono_stack_walk (find_wrapper, &found);
2509 request_thread_stop (MonoInternalThread *thread)
2511 LOCK_THREAD (thread);
2513 if ((thread->state & ThreadState_StopRequested) != 0 ||
2514 (thread->state & ThreadState_Stopped) != 0)
2516 UNLOCK_THREAD (thread);
2520 /* Make sure the thread is awake */
2521 mono_thread_resume (thread);
2523 thread->state |= ThreadState_StopRequested;
2524 thread->state &= ~ThreadState_AbortRequested;
2526 UNLOCK_THREAD (thread);
2531 * mono_thread_internal_stop:
2533 * Request thread @thread to stop.
2535 * @thread MUST NOT be the current thread.
2538 mono_thread_internal_stop (MonoInternalThread *thread)
2540 g_assert (thread != mono_thread_internal_current ());
2542 if (!request_thread_stop (thread))
2545 async_abort_internal (thread, TRUE);
2548 void mono_thread_stop (MonoThread *thread)
2550 MonoInternalThread *internal = thread->internal_thread;
2552 if (!request_thread_stop (internal))
2555 if (internal == mono_thread_internal_current ()) {
2557 self_abort_internal (&error);
2559 This function is part of the embeding API and has no way to return the exception
2560 to be thrown. So what we do is keep the old behavior and raise the exception.
2562 mono_error_raise_exception (&error); /* OK to throw, see note */
2564 async_abort_internal (internal, TRUE);
2569 ves_icall_System_Threading_Thread_VolatileRead1 (void *ptr)
2571 gint8 tmp = *(volatile gint8 *)ptr;
2572 mono_memory_barrier ();
2577 ves_icall_System_Threading_Thread_VolatileRead2 (void *ptr)
2579 gint16 tmp = *(volatile gint16 *)ptr;
2580 mono_memory_barrier ();
2585 ves_icall_System_Threading_Thread_VolatileRead4 (void *ptr)
2587 gint32 tmp = *(volatile gint32 *)ptr;
2588 mono_memory_barrier ();
2593 ves_icall_System_Threading_Thread_VolatileRead8 (void *ptr)
2595 gint64 tmp = *(volatile gint64 *)ptr;
2596 mono_memory_barrier ();
2601 ves_icall_System_Threading_Thread_VolatileReadIntPtr (void *ptr)
2603 volatile void *tmp = *(volatile void **)ptr;
2604 mono_memory_barrier ();
2605 return (void *) tmp;
2609 ves_icall_System_Threading_Thread_VolatileReadObject (void *ptr)
2611 volatile MonoObject *tmp = *(volatile MonoObject **)ptr;
2612 mono_memory_barrier ();
2613 return (MonoObject *) tmp;
2617 ves_icall_System_Threading_Thread_VolatileReadDouble (void *ptr)
2619 double tmp = *(volatile double *)ptr;
2620 mono_memory_barrier ();
2625 ves_icall_System_Threading_Thread_VolatileReadFloat (void *ptr)
2627 float tmp = *(volatile float *)ptr;
2628 mono_memory_barrier ();
2633 ves_icall_System_Threading_Volatile_Read1 (void *ptr)
2635 return InterlockedRead8 ((volatile gint8 *)ptr);
2639 ves_icall_System_Threading_Volatile_Read2 (void *ptr)
2641 return InterlockedRead16 ((volatile gint16 *)ptr);
2645 ves_icall_System_Threading_Volatile_Read4 (void *ptr)
2647 return InterlockedRead ((volatile gint32 *)ptr);
2651 ves_icall_System_Threading_Volatile_Read8 (void *ptr)
2653 #if SIZEOF_VOID_P == 4
2654 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2656 mono_interlocked_lock ();
2657 val = *(gint64*)ptr;
2658 mono_interlocked_unlock ();
2662 return InterlockedRead64 ((volatile gint64 *)ptr);
2666 ves_icall_System_Threading_Volatile_ReadIntPtr (void *ptr)
2668 return InterlockedReadPointer ((volatile gpointer *)ptr);
2672 ves_icall_System_Threading_Volatile_ReadDouble (void *ptr)
2676 #if SIZEOF_VOID_P == 4
2677 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2679 mono_interlocked_lock ();
2680 val = *(double*)ptr;
2681 mono_interlocked_unlock ();
2686 u.ival = InterlockedRead64 ((volatile gint64 *)ptr);
2692 ves_icall_System_Threading_Volatile_ReadFloat (void *ptr)
2696 u.ival = InterlockedRead ((volatile gint32 *)ptr);
2702 ves_icall_System_Threading_Volatile_Read_T (void *ptr)
2704 return (MonoObject *)InterlockedReadPointer ((volatile gpointer *)ptr);
2708 ves_icall_System_Threading_Thread_VolatileWrite1 (void *ptr, gint8 value)
2710 mono_memory_barrier ();
2711 *(volatile gint8 *)ptr = value;
2715 ves_icall_System_Threading_Thread_VolatileWrite2 (void *ptr, gint16 value)
2717 mono_memory_barrier ();
2718 *(volatile gint16 *)ptr = value;
2722 ves_icall_System_Threading_Thread_VolatileWrite4 (void *ptr, gint32 value)
2724 mono_memory_barrier ();
2725 *(volatile gint32 *)ptr = value;
2729 ves_icall_System_Threading_Thread_VolatileWrite8 (void *ptr, gint64 value)
2731 mono_memory_barrier ();
2732 *(volatile gint64 *)ptr = value;
2736 ves_icall_System_Threading_Thread_VolatileWriteIntPtr (void *ptr, void *value)
2738 mono_memory_barrier ();
2739 *(volatile void **)ptr = value;
2743 ves_icall_System_Threading_Thread_VolatileWriteObject (void *ptr, MonoObject *value)
2745 mono_memory_barrier ();
2746 mono_gc_wbarrier_generic_store (ptr, value);
2750 ves_icall_System_Threading_Thread_VolatileWriteDouble (void *ptr, double value)
2752 mono_memory_barrier ();
2753 *(volatile double *)ptr = value;
2757 ves_icall_System_Threading_Thread_VolatileWriteFloat (void *ptr, float value)
2759 mono_memory_barrier ();
2760 *(volatile float *)ptr = value;
2764 ves_icall_System_Threading_Volatile_Write1 (void *ptr, gint8 value)
2766 InterlockedWrite8 ((volatile gint8 *)ptr, value);
2770 ves_icall_System_Threading_Volatile_Write2 (void *ptr, gint16 value)
2772 InterlockedWrite16 ((volatile gint16 *)ptr, value);
2776 ves_icall_System_Threading_Volatile_Write4 (void *ptr, gint32 value)
2778 InterlockedWrite ((volatile gint32 *)ptr, value);
2782 ves_icall_System_Threading_Volatile_Write8 (void *ptr, gint64 value)
2784 #if SIZEOF_VOID_P == 4
2785 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2786 mono_interlocked_lock ();
2787 *(gint64*)ptr = value;
2788 mono_interlocked_unlock ();
2793 InterlockedWrite64 ((volatile gint64 *)ptr, value);
2797 ves_icall_System_Threading_Volatile_WriteIntPtr (void *ptr, void *value)
2799 InterlockedWritePointer ((volatile gpointer *)ptr, value);
2803 ves_icall_System_Threading_Volatile_WriteDouble (void *ptr, double value)
2807 #if SIZEOF_VOID_P == 4
2808 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2809 mono_interlocked_lock ();
2810 *(double*)ptr = value;
2811 mono_interlocked_unlock ();
2818 InterlockedWrite64 ((volatile gint64 *)ptr, u.ival);
2822 ves_icall_System_Threading_Volatile_WriteFloat (void *ptr, float value)
2828 InterlockedWrite ((volatile gint32 *)ptr, u.ival);
2832 ves_icall_System_Threading_Volatile_Write_T (void *ptr, MonoObject *value)
2834 mono_gc_wbarrier_generic_store_atomic (ptr, value);
2838 free_context (void *user_data)
2840 ContextStaticData *data = user_data;
2842 mono_threads_lock ();
2845 * There is no guarantee that, by the point this reference queue callback
2846 * has been invoked, the GC handle associated with the object will fail to
2847 * resolve as one might expect. So if we don't free and remove the GC
2848 * handle here, free_context_static_data_helper () could end up resolving
2849 * a GC handle to an actually-dead context which would contain a pointer
2850 * to an already-freed static data segment, resulting in a crash when
2853 g_hash_table_remove (contexts, GUINT_TO_POINTER (data->gc_handle));
2855 mono_threads_unlock ();
2857 mono_gchandle_free (data->gc_handle);
2858 mono_free_static_data (data->static_data);
2863 ves_icall_System_Runtime_Remoting_Contexts_Context_RegisterContext (MonoAppContext *ctx)
2865 mono_threads_lock ();
2867 //g_print ("Registering context %d in domain %d\n", ctx->context_id, ctx->domain_id);
2870 contexts = g_hash_table_new (NULL, NULL);
2873 context_queue = mono_gc_reference_queue_new (free_context);
2875 gpointer gch = GUINT_TO_POINTER (mono_gchandle_new_weakref (&ctx->obj, FALSE));
2876 g_hash_table_insert (contexts, gch, gch);
2879 * We use this intermediate structure to contain a duplicate pointer to
2880 * the static data because we can't rely on being able to resolve the GC
2881 * handle in the reference queue callback.
2883 ContextStaticData *data = g_new0 (ContextStaticData, 1);
2884 data->gc_handle = GPOINTER_TO_UINT (gch);
2887 context_adjust_static_data (ctx);
2888 mono_gc_reference_queue_add (context_queue, &ctx->obj, data);
2890 mono_threads_unlock ();
2892 mono_profiler_context_loaded (ctx);
2896 ves_icall_System_Runtime_Remoting_Contexts_Context_ReleaseContext (MonoAppContext *ctx)
2899 * NOTE: Since finalizers are unreliable for the purposes of ensuring
2900 * cleanup in exceptional circumstances, we don't actually do any
2901 * cleanup work here. We instead do this via a reference queue.
2904 //g_print ("Releasing context %d in domain %d\n", ctx->context_id, ctx->domain_id);
2906 mono_profiler_context_unloaded (ctx);
2910 mono_thread_init_tls (void)
2912 MONO_FAST_TLS_INIT (tls_current_object);
2913 mono_native_tls_alloc (¤t_object_key, NULL);
2916 void mono_thread_init (MonoThreadStartCB start_cb,
2917 MonoThreadAttachCB attach_cb)
2919 mono_coop_mutex_init_recursive (&threads_mutex);
2921 mono_os_mutex_init_recursive(&interlocked_mutex);
2922 mono_os_mutex_init_recursive(&joinable_threads_mutex);
2924 background_change_event = CreateEvent (NULL, TRUE, FALSE, NULL);
2925 g_assert(background_change_event != NULL);
2927 mono_init_static_data_info (&thread_static_info);
2928 mono_init_static_data_info (&context_static_info);
2930 THREAD_DEBUG (g_message ("%s: Allocated current_object_key %d", __func__, current_object_key));
2932 mono_thread_start_cb = start_cb;
2933 mono_thread_attach_cb = attach_cb;
2935 /* Get a pseudo handle to the current process. This is just a
2936 * kludge so that wapi can build a process handle if needed.
2937 * As a pseudo handle is returned, we don't need to clean
2940 GetCurrentProcess ();
2943 void mono_thread_cleanup (void)
2945 #if !defined(RUN_IN_SUBTHREAD)
2946 /* The main thread must abandon any held mutexes (particularly
2947 * important for named mutexes as they are shared across
2948 * processes, see bug 74680.) This will happen when the
2949 * thread exits, but if it's not running in a subthread it
2950 * won't exit in time.
2952 mono_thread_info_set_exited (mono_thread_info_current ());
2956 /* This stuff needs more testing, it seems one of these
2957 * critical sections can be locked when mono_thread_cleanup is
2960 mono_coop_mutex_destroy (&threads_mutex);
2961 mono_os_mutex_destroy (&interlocked_mutex);
2962 mono_os_mutex_destroy (&delayed_free_table_mutex);
2963 mono_os_mutex_destroy (&small_id_mutex);
2964 CloseHandle (background_change_event);
2967 mono_native_tls_free (current_object_key);
2971 mono_threads_install_cleanup (MonoThreadCleanupFunc func)
2973 mono_thread_cleanup_fn = func;
2977 mono_thread_set_manage_callback (MonoThread *thread, MonoThreadManageCallback func)
2979 thread->internal_thread->manage_callback = func;
2983 static void print_tids (gpointer key, gpointer value, gpointer user)
2985 /* GPOINTER_TO_UINT breaks horribly if sizeof(void *) >
2986 * sizeof(uint) and a cast to uint would overflow
2988 /* Older versions of glib don't have G_GSIZE_FORMAT, so just
2989 * print this as a pointer.
2991 g_message ("Waiting for: %p", key);
2996 HANDLE handles[MAXIMUM_WAIT_OBJECTS];
2997 MonoInternalThread *threads[MAXIMUM_WAIT_OBJECTS];
3001 static void wait_for_tids (struct wait_data *wait, guint32 timeout)
3005 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
3008 ret=WaitForMultipleObjectsEx(wait->num, wait->handles, TRUE, timeout, TRUE);
3011 if(ret==WAIT_FAILED) {
3012 /* See the comment in build_wait_tids() */
3013 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
3017 for(i=0; i<wait->num; i++)
3018 CloseHandle (wait->handles[i]);
3020 if (ret == WAIT_TIMEOUT)
3023 for(i=0; i<wait->num; i++) {
3024 gsize tid = wait->threads[i]->tid;
3027 * On !win32, when the thread handle becomes signalled, it just means the thread has exited user code,
3028 * it can still run io-layer etc. code. So wait for it to really exit.
3029 * FIXME: This won't join threads which are not in the joinable_hash yet.
3031 mono_thread_join ((gpointer)tid);
3033 mono_threads_lock ();
3034 if(mono_g_hash_table_lookup (threads, (gpointer)tid)!=NULL) {
3035 /* This thread must have been killed, because
3036 * it hasn't cleaned itself up. (It's just
3037 * possible that the thread exited before the
3038 * parent thread had a chance to store the
3039 * handle, and now there is another pointer to
3040 * the already-exited thread stored. In this
3041 * case, we'll just get two
3042 * mono_profiler_thread_end() calls for the
3046 mono_threads_unlock ();
3047 THREAD_DEBUG (g_message ("%s: cleaning up after thread %p (%"G_GSIZE_FORMAT")", __func__, wait->threads[i], tid));
3048 thread_cleanup (wait->threads[i]);
3050 mono_threads_unlock ();
3055 static void wait_for_tids_or_state_change (struct wait_data *wait, guint32 timeout)
3057 guint32 i, ret, count;
3059 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
3061 /* Add the thread state change event, so it wakes up if a thread changes
3062 * to background mode.
3065 if (count < MAXIMUM_WAIT_OBJECTS) {
3066 wait->handles [count] = background_change_event;
3071 ret=WaitForMultipleObjectsEx (count, wait->handles, FALSE, timeout, TRUE);
3074 if(ret==WAIT_FAILED) {
3075 /* See the comment in build_wait_tids() */
3076 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
3080 for(i=0; i<wait->num; i++)
3081 CloseHandle (wait->handles[i]);
3083 if (ret == WAIT_TIMEOUT)
3086 if (ret < wait->num) {
3087 gsize tid = wait->threads[ret]->tid;
3088 mono_threads_lock ();
3089 if (mono_g_hash_table_lookup (threads, (gpointer)tid)!=NULL) {
3090 /* See comment in wait_for_tids about thread cleanup */
3091 mono_threads_unlock ();
3092 THREAD_DEBUG (g_message ("%s: cleaning up after thread %"G_GSIZE_FORMAT, __func__, tid));
3093 thread_cleanup (wait->threads [ret]);
3095 mono_threads_unlock ();
3099 static void build_wait_tids (gpointer key, gpointer value, gpointer user)
3101 struct wait_data *wait=(struct wait_data *)user;
3103 if(wait->num<MAXIMUM_WAIT_OBJECTS) {
3105 MonoInternalThread *thread=(MonoInternalThread *)value;
3107 /* Ignore background threads, we abort them later */
3108 /* Do not lock here since it is not needed and the caller holds threads_lock */
3109 if (thread->state & ThreadState_Background) {
3110 THREAD_DEBUG (g_message ("%s: ignoring background thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3111 return; /* just leave, ignore */
3114 if (mono_gc_is_finalizer_internal_thread (thread)) {
3115 THREAD_DEBUG (g_message ("%s: ignoring finalizer thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3119 if (thread == mono_thread_internal_current ()) {
3120 THREAD_DEBUG (g_message ("%s: ignoring current thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3124 if (mono_thread_get_main () && (thread == mono_thread_get_main ()->internal_thread)) {
3125 THREAD_DEBUG (g_message ("%s: ignoring main thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3129 if (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE) {
3130 THREAD_DEBUG (g_message ("%s: ignoring thread %" G_GSIZE_FORMAT "with DONT_MANAGE flag set.", __func__, (gsize)thread->tid));
3134 handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3135 if (handle == NULL) {
3136 THREAD_DEBUG (g_message ("%s: ignoring unopenable thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3140 THREAD_DEBUG (g_message ("%s: Invoking mono_thread_manage callback on thread %p", __func__, thread));
3141 if ((thread->manage_callback == NULL) || (thread->manage_callback (thread->root_domain_thread) == TRUE)) {
3142 wait->handles[wait->num]=handle;
3143 wait->threads[wait->num]=thread;
3146 THREAD_DEBUG (g_message ("%s: adding thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3148 THREAD_DEBUG (g_message ("%s: ignoring (because of callback) thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3153 /* Just ignore the rest, we can't do anything with
3160 remove_and_abort_threads (gpointer key, gpointer value, gpointer user)
3162 struct wait_data *wait=(struct wait_data *)user;
3163 MonoNativeThreadId self = mono_native_thread_id_get ();
3164 MonoInternalThread *thread = (MonoInternalThread *)value;
3167 if (wait->num >= MAXIMUM_WAIT_OBJECTS)
3170 /* The finalizer thread is not a background thread */
3171 if (!mono_native_thread_id_equals (thread_get_tid (thread), self)
3172 && (thread->state & ThreadState_Background) != 0
3173 && (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE) == 0
3175 handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3179 wait->handles[wait->num] = handle;
3180 wait->threads[wait->num] = thread;
3183 THREAD_DEBUG (g_print ("%s: Aborting id: %"G_GSIZE_FORMAT"\n", __func__, (gsize)thread->tid));
3184 mono_thread_internal_abort (thread);
3188 return !mono_native_thread_id_equals (thread_get_tid (thread), self)
3189 && !mono_gc_is_finalizer_internal_thread (thread);
3193 * mono_threads_set_shutting_down:
3195 * Is called by a thread that wants to shut down Mono. If the runtime is already
3196 * shutting down, the calling thread is suspended/stopped, and this function never
3200 mono_threads_set_shutting_down (void)
3202 MonoInternalThread *current_thread = mono_thread_internal_current ();
3204 mono_threads_lock ();
3206 if (shutting_down) {
3207 mono_threads_unlock ();
3209 /* Make sure we're properly suspended/stopped */
3211 LOCK_THREAD (current_thread);
3213 if ((current_thread->state & ThreadState_SuspendRequested) ||
3214 (current_thread->state & ThreadState_AbortRequested) ||
3215 (current_thread->state & ThreadState_StopRequested)) {
3216 UNLOCK_THREAD (current_thread);
3217 mono_thread_execute_interruption ();
3219 current_thread->state |= ThreadState_Stopped;
3220 UNLOCK_THREAD (current_thread);
3223 /*since we're killing the thread, unset the current domain.*/
3224 mono_domain_unset ();
3226 /* Wake up other threads potentially waiting for us */
3227 mono_thread_info_exit ();
3229 shutting_down = TRUE;
3231 /* Not really a background state change, but this will
3232 * interrupt the main thread if it is waiting for all
3233 * the other threads.
3235 SetEvent (background_change_event);
3237 mono_threads_unlock ();
3241 void mono_thread_manage (void)
3243 struct wait_data wait_data;
3244 struct wait_data *wait = &wait_data;
3246 memset (wait, 0, sizeof (struct wait_data));
3247 /* join each thread that's still running */
3248 THREAD_DEBUG (g_message ("%s: Joining each running thread...", __func__));
3250 mono_threads_lock ();
3252 THREAD_DEBUG (g_message("%s: No threads", __func__));
3253 mono_threads_unlock ();
3256 mono_threads_unlock ();
3259 mono_threads_lock ();
3260 if (shutting_down) {
3261 /* somebody else is shutting down */
3262 mono_threads_unlock ();
3265 THREAD_DEBUG (g_message ("%s: There are %d threads to join", __func__, mono_g_hash_table_size (threads));
3266 mono_g_hash_table_foreach (threads, print_tids, NULL));
3268 ResetEvent (background_change_event);
3270 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3271 memset (wait->threads, 0, MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3272 mono_g_hash_table_foreach (threads, build_wait_tids, wait);
3273 mono_threads_unlock ();
3275 /* Something to wait for */
3276 wait_for_tids_or_state_change (wait, INFINITE);
3278 THREAD_DEBUG (g_message ("%s: I have %d threads after waiting.", __func__, wait->num));
3279 } while(wait->num>0);
3281 /* Mono is shutting down, so just wait for the end */
3282 if (!mono_runtime_try_shutdown ()) {
3283 /*FIXME mono_thread_suspend probably should call mono_thread_execute_interruption when self interrupting. */
3284 mono_thread_suspend (mono_thread_internal_current ());
3285 mono_thread_execute_interruption ();
3289 * Remove everything but the finalizer thread and self.
3290 * Also abort all the background threads
3293 mono_threads_lock ();
3296 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3297 memset (wait->threads, 0, MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3298 mono_g_hash_table_foreach_remove (threads, remove_and_abort_threads, wait);
3300 mono_threads_unlock ();
3302 THREAD_DEBUG (g_message ("%s: wait->num is now %d", __func__, wait->num));
3304 /* Something to wait for */
3305 wait_for_tids (wait, INFINITE);
3307 } while (wait->num > 0);
3310 * give the subthreads a chance to really quit (this is mainly needed
3311 * to get correct user and system times from getrusage/wait/time(1)).
3312 * This could be removed if we avoid pthread_detach() and use pthread_join().
3314 mono_thread_info_yield ();
3318 collect_threads_for_suspend (gpointer key, gpointer value, gpointer user_data)
3320 MonoInternalThread *thread = (MonoInternalThread*)value;
3321 struct wait_data *wait = (struct wait_data*)user_data;
3325 * We try to exclude threads early, to avoid running into the MAXIMUM_WAIT_OBJECTS
3327 * This needs no locking.
3329 if ((thread->state & ThreadState_Suspended) != 0 ||
3330 (thread->state & ThreadState_Stopped) != 0)
3333 if (wait->num<MAXIMUM_WAIT_OBJECTS) {
3334 handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3338 wait->handles [wait->num] = handle;
3339 wait->threads [wait->num] = thread;
3345 * mono_thread_suspend_all_other_threads:
3347 * Suspend all managed threads except the finalizer thread and this thread. It is
3348 * not possible to resume them later.
3350 void mono_thread_suspend_all_other_threads (void)
3352 struct wait_data wait_data;
3353 struct wait_data *wait = &wait_data;
3355 MonoNativeThreadId self = mono_native_thread_id_get ();
3356 guint32 eventidx = 0;
3357 gboolean starting, finished;
3359 memset (wait, 0, sizeof (struct wait_data));
3361 * The other threads could be in an arbitrary state at this point, i.e.
3362 * they could be starting up, shutting down etc. This means that there could be
3363 * threads which are not even in the threads hash table yet.
3367 * First we set a barrier which will be checked by all threads before they
3368 * are added to the threads hash table, and they will exit if the flag is set.
3369 * This ensures that no threads could be added to the hash later.
3370 * We will use shutting_down as the barrier for now.
3372 g_assert (shutting_down);
3375 * We make multiple calls to WaitForMultipleObjects since:
3376 * - we can only wait for MAXIMUM_WAIT_OBJECTS threads
3377 * - some threads could exit without becoming suspended
3382 * Make a copy of the hashtable since we can't do anything with
3383 * threads while threads_mutex is held.
3386 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3387 memset (wait->threads, 0, MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3388 mono_threads_lock ();
3389 mono_g_hash_table_foreach (threads, collect_threads_for_suspend, wait);
3390 mono_threads_unlock ();
3393 /* Get the suspended events that we'll be waiting for */
3394 for (i = 0; i < wait->num; ++i) {
3395 MonoInternalThread *thread = wait->threads [i];
3397 if (mono_native_thread_id_equals (thread_get_tid (thread), self)
3398 || mono_gc_is_finalizer_internal_thread (thread)
3399 || (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE)
3401 //CloseHandle (wait->handles [i]);
3402 wait->threads [i] = NULL; /* ignore this thread in next loop */
3406 LOCK_THREAD (thread);
3408 if ((thread->state & ThreadState_Suspended) != 0 ||
3409 (thread->state & ThreadState_StopRequested) != 0 ||
3410 (thread->state & ThreadState_Stopped) != 0) {
3411 UNLOCK_THREAD (thread);
3412 CloseHandle (wait->handles [i]);
3413 wait->threads [i] = NULL; /* ignore this thread in next loop */
3419 /* Convert abort requests into suspend requests */
3420 if ((thread->state & ThreadState_AbortRequested) != 0)
3421 thread->state &= ~ThreadState_AbortRequested;
3423 thread->state |= ThreadState_SuspendRequested;
3425 /* Signal the thread to suspend + calls UNLOCK_THREAD (thread) */
3426 async_suspend_internal (thread, TRUE);
3428 if (eventidx <= 0) {
3430 * If there are threads which are starting up, we wait until they
3431 * are suspended when they try to register in the threads hash.
3432 * This is guaranteed to finish, since the threads which can create new
3433 * threads get suspended after a while.
3434 * FIXME: The finalizer thread can still create new threads.
3436 mono_threads_lock ();
3437 if (threads_starting_up)
3438 starting = mono_g_hash_table_size (threads_starting_up) > 0;
3441 mono_threads_unlock ();
3443 mono_thread_info_sleep (100, NULL);
3451 MonoInternalThread *thread;
3452 MonoStackFrameInfo *frames;
3453 int nframes, max_frames;
3454 int nthreads, max_threads;
3455 MonoInternalThread **threads;
3456 } ThreadDumpUserData;
3458 static gboolean thread_dump_requested;
3460 /* This needs to be async safe */
3462 collect_frame (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
3464 ThreadDumpUserData *ud = (ThreadDumpUserData *)data;
3466 if (ud->nframes < ud->max_frames) {
3467 memcpy (&ud->frames [ud->nframes], frame, sizeof (MonoStackFrameInfo));
3474 /* This needs to be async safe */
3475 static SuspendThreadResult
3476 get_thread_dump (MonoThreadInfo *info, gpointer ud)
3478 ThreadDumpUserData *user_data = (ThreadDumpUserData *)ud;
3479 MonoInternalThread *thread = user_data->thread;
3482 /* This no longer works with remote unwinding */
3483 g_string_append_printf (text, " tid=0x%p this=0x%p ", (gpointer)(gsize)thread->tid, thread);
3484 mono_thread_info_describe (info, text);
3485 g_string_append (text, "\n");
3488 if (thread == mono_thread_internal_current ())
3489 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (collect_frame, NULL, MONO_UNWIND_SIGNAL_SAFE, ud);
3491 mono_get_eh_callbacks ()->mono_walk_stack_with_state (collect_frame, mono_thread_info_get_suspend_state (info), MONO_UNWIND_SIGNAL_SAFE, ud);
3493 return MonoResumeThread;
3497 int nthreads, max_threads;
3498 MonoInternalThread **threads;
3499 } CollectThreadsUserData;
3502 collect_thread (gpointer key, gpointer value, gpointer user)
3504 CollectThreadsUserData *ud = (CollectThreadsUserData *)user;
3505 MonoInternalThread *thread = (MonoInternalThread *)value;
3507 if (ud->nthreads < ud->max_threads)
3508 ud->threads [ud->nthreads ++] = thread;
3512 * Collect running threads into the THREADS array.
3513 * THREADS should be an array allocated on the stack.
3516 collect_threads (MonoInternalThread **thread_array, int max_threads)
3518 CollectThreadsUserData ud;
3520 memset (&ud, 0, sizeof (ud));
3521 /* This array contains refs, but its on the stack, so its ok */
3522 ud.threads = thread_array;
3523 ud.max_threads = max_threads;
3525 mono_threads_lock ();
3526 mono_g_hash_table_foreach (threads, collect_thread, &ud);
3527 mono_threads_unlock ();
3533 dump_thread (MonoInternalThread *thread, ThreadDumpUserData *ud)
3535 GString* text = g_string_new (0);
3537 GError *error = NULL;
3540 ud->thread = thread;
3543 /* Collect frames for the thread */
3544 if (thread == mono_thread_internal_current ()) {
3545 get_thread_dump (mono_thread_info_current (), ud);
3547 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), FALSE, get_thread_dump, ud);
3551 * Do all the non async-safe work outside of get_thread_dump.
3554 name = g_utf16_to_utf8 (thread->name, thread->name_len, NULL, NULL, &error);
3556 g_string_append_printf (text, "\n\"%s\"", name);
3559 else if (thread->threadpool_thread) {
3560 g_string_append (text, "\n\"<threadpool thread>\"");
3562 g_string_append (text, "\n\"<unnamed thread>\"");
3565 for (i = 0; i < ud->nframes; ++i) {
3566 MonoStackFrameInfo *frame = &ud->frames [i];
3567 MonoMethod *method = NULL;
3569 if (frame->type == FRAME_TYPE_MANAGED)
3570 method = mono_jit_info_get_method (frame->ji);
3573 gchar *location = mono_debug_print_stack_frame (method, frame->native_offset, frame->domain);
3574 g_string_append_printf (text, " %s\n", location);
3577 g_string_append_printf (text, " at <unknown> <0x%05x>\n", frame->native_offset);
3581 fprintf (stdout, "%s", text->str);
3583 #if PLATFORM_WIN32 && TARGET_WIN32 && _DEBUG
3584 OutputDebugStringA(text->str);
3587 g_string_free (text, TRUE);
3592 mono_threads_perform_thread_dump (void)
3594 ThreadDumpUserData ud;
3595 MonoInternalThread *thread_array [128];
3596 int tindex, nthreads;
3598 if (!thread_dump_requested)
3601 printf ("Full thread dump:\n");
3603 /* Make a copy of the threads hash to avoid doing work inside threads_lock () */
3604 nthreads = collect_threads (thread_array, 128);
3606 memset (&ud, 0, sizeof (ud));
3607 ud.frames = g_new0 (MonoStackFrameInfo, 256);
3608 ud.max_frames = 256;
3610 for (tindex = 0; tindex < nthreads; ++tindex)
3611 dump_thread (thread_array [tindex], &ud);
3615 thread_dump_requested = FALSE;
3618 /* Obtain the thread dump of all threads */
3620 mono_threads_get_thread_dump (MonoArray **out_threads, MonoArray **out_stack_frames, MonoError *error)
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);
3644 *out_stack_frames = mono_array_new_checked (domain, mono_defaults.array_class, nthreads, 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);
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);
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);
3688 MONO_OBJECT_SETREF (sf, method, rm);
3690 location = mono_debug_lookup_source_location (method, frame->native_offset, domain);
3692 sf->il_offset = location->il_offset;
3694 if (location && location->source_file) {
3695 MONO_OBJECT_SETREF (sf, filename, mono_string_new (domain, location->source_file));
3696 sf->line = location->row;
3697 sf->column = location->column;
3699 mono_debug_free_source_location (location);
3704 mono_array_setref (thread_frames, i, sf);
3710 return is_ok (error);
3714 * mono_threads_request_thread_dump:
3716 * Ask all threads except the current to print their stacktrace to stdout.
3719 mono_threads_request_thread_dump (void)
3721 /*The new thread dump code runs out of the finalizer thread. */
3722 thread_dump_requested = TRUE;
3723 mono_gc_finalize_notify ();
3728 gint allocated; /* +1 so that refs [allocated] == NULL */
3732 typedef struct ref_stack RefStack;
3735 ref_stack_new (gint initial_size)
3739 initial_size = MAX (initial_size, 16) + 1;
3740 rs = g_new0 (RefStack, 1);
3741 rs->refs = g_new0 (gpointer, initial_size);
3742 rs->allocated = initial_size;
3747 ref_stack_destroy (gpointer ptr)
3749 RefStack *rs = (RefStack *)ptr;
3758 ref_stack_push (RefStack *rs, gpointer ptr)
3760 g_assert (rs != NULL);
3762 if (rs->bottom >= rs->allocated) {
3763 rs->refs = (void **)g_realloc (rs->refs, rs->allocated * 2 * sizeof (gpointer) + 1);
3764 rs->allocated <<= 1;
3765 rs->refs [rs->allocated] = NULL;
3767 rs->refs [rs->bottom++] = ptr;
3771 ref_stack_pop (RefStack *rs)
3773 if (rs == NULL || rs->bottom == 0)
3777 rs->refs [rs->bottom] = NULL;
3781 ref_stack_find (RefStack *rs, gpointer ptr)
3788 for (refs = rs->refs; refs && *refs; refs++) {
3796 * mono_thread_push_appdomain_ref:
3798 * Register that the current thread may have references to objects in domain
3799 * @domain on its stack. Each call to this function should be paired with a
3800 * call to pop_appdomain_ref.
3803 mono_thread_push_appdomain_ref (MonoDomain *domain)
3805 MonoInternalThread *thread = mono_thread_internal_current ();
3808 /* printf ("PUSH REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, domain->friendly_name); */
3809 SPIN_LOCK (thread->lock_thread_id);
3810 if (thread->appdomain_refs == NULL)
3811 thread->appdomain_refs = ref_stack_new (16);
3812 ref_stack_push ((RefStack *)thread->appdomain_refs, domain);
3813 SPIN_UNLOCK (thread->lock_thread_id);
3818 mono_thread_pop_appdomain_ref (void)
3820 MonoInternalThread *thread = mono_thread_internal_current ();
3823 /* printf ("POP REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, ((MonoDomain*)(thread->appdomain_refs->data))->friendly_name); */
3824 SPIN_LOCK (thread->lock_thread_id);
3825 ref_stack_pop ((RefStack *)thread->appdomain_refs);
3826 SPIN_UNLOCK (thread->lock_thread_id);
3831 mono_thread_internal_has_appdomain_ref (MonoInternalThread *thread, MonoDomain *domain)
3834 SPIN_LOCK (thread->lock_thread_id);
3835 res = ref_stack_find ((RefStack *)thread->appdomain_refs, domain);
3836 SPIN_UNLOCK (thread->lock_thread_id);
3841 mono_thread_has_appdomain_ref (MonoThread *thread, MonoDomain *domain)
3843 return mono_thread_internal_has_appdomain_ref (thread->internal_thread, domain);
3846 typedef struct abort_appdomain_data {
3847 struct wait_data wait;
3849 } abort_appdomain_data;
3852 collect_appdomain_thread (gpointer key, gpointer value, gpointer user_data)
3854 MonoInternalThread *thread = (MonoInternalThread*)value;
3855 abort_appdomain_data *data = (abort_appdomain_data*)user_data;
3856 MonoDomain *domain = data->domain;
3858 if (mono_thread_internal_has_appdomain_ref (thread, domain)) {
3859 /* printf ("ABORTING THREAD %p BECAUSE IT REFERENCES DOMAIN %s.\n", thread->tid, domain->friendly_name); */
3861 if(data->wait.num<MAXIMUM_WAIT_OBJECTS) {
3862 HANDLE handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3865 data->wait.handles [data->wait.num] = handle;
3866 data->wait.threads [data->wait.num] = thread;
3869 /* Just ignore the rest, we can't do anything with
3877 * mono_threads_abort_appdomain_threads:
3879 * Abort threads which has references to the given appdomain.
3882 mono_threads_abort_appdomain_threads (MonoDomain *domain, int timeout)
3884 #ifdef __native_client__
3888 abort_appdomain_data user_data;
3890 int orig_timeout = timeout;
3893 THREAD_DEBUG (g_message ("%s: starting abort", __func__));
3895 start_time = mono_msec_ticks ();
3897 mono_threads_lock ();
3899 user_data.domain = domain;
3900 user_data.wait.num = 0;
3901 /* This shouldn't take any locks */
3902 mono_g_hash_table_foreach (threads, collect_appdomain_thread, &user_data);
3903 mono_threads_unlock ();
3905 if (user_data.wait.num > 0) {
3906 /* Abort the threads outside the threads lock */
3907 for (i = 0; i < user_data.wait.num; ++i)
3908 mono_thread_internal_abort (user_data.wait.threads [i]);
3911 * We should wait for the threads either to abort, or to leave the
3912 * domain. We can't do the latter, so we wait with a timeout.
3914 wait_for_tids (&user_data.wait, 100);
3917 /* Update remaining time */
3918 timeout -= mono_msec_ticks () - start_time;
3919 start_time = mono_msec_ticks ();
3921 if (orig_timeout != -1 && timeout < 0)
3924 while (user_data.wait.num > 0);
3926 THREAD_DEBUG (g_message ("%s: abort done", __func__));
3932 clear_cached_culture (gpointer key, gpointer value, gpointer user_data)
3934 MonoInternalThread *thread = (MonoInternalThread*)value;
3935 MonoDomain *domain = (MonoDomain*)user_data;
3938 /* No locking needed here */
3939 /* FIXME: why no locking? writes to the cache are protected with synch_cs above */
3941 if (thread->cached_culture_info) {
3942 for (i = 0; i < NUM_CACHED_CULTURES * 2; ++i) {
3943 MonoObject *obj = mono_array_get (thread->cached_culture_info, MonoObject*, i);
3944 if (obj && obj->vtable->domain == domain)
3945 mono_array_set (thread->cached_culture_info, MonoObject*, i, NULL);
3951 * mono_threads_clear_cached_culture:
3953 * Clear the cached_current_culture from all threads if it is in the
3957 mono_threads_clear_cached_culture (MonoDomain *domain)
3959 mono_threads_lock ();
3960 mono_g_hash_table_foreach (threads, clear_cached_culture, domain);
3961 mono_threads_unlock ();
3965 * mono_thread_get_undeniable_exception:
3967 * Return an exception which needs to be raised when leaving a catch clause.
3968 * This is used for undeniable exception propagation.
3971 mono_thread_get_undeniable_exception (void)
3973 MonoInternalThread *thread = mono_thread_internal_current ();
3975 if (thread && thread->abort_exc && !is_running_protected_wrapper ()) {
3977 * FIXME: Clear the abort exception and return an AppDomainUnloaded
3978 * exception if the thread no longer references a dying appdomain.
3980 thread->abort_exc->trace_ips = NULL;
3981 thread->abort_exc->stack_trace = NULL;
3982 return thread->abort_exc;
3988 #if MONO_SMALL_CONFIG
3989 #define NUM_STATIC_DATA_IDX 4
3990 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
3994 #define NUM_STATIC_DATA_IDX 8
3995 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
3996 1024, 4096, 16384, 65536, 262144, 1048576, 4194304, 16777216
4000 static MonoBitSet *thread_reference_bitmaps [NUM_STATIC_DATA_IDX];
4001 static MonoBitSet *context_reference_bitmaps [NUM_STATIC_DATA_IDX];
4004 mark_slots (void *addr, MonoBitSet **bitmaps, MonoGCMarkFunc mark_func, void *gc_data)
4006 gpointer *static_data = (gpointer *)addr;
4008 for (int i = 0; i < NUM_STATIC_DATA_IDX; ++i) {
4009 void **ptr = (void **)static_data [i];
4014 MONO_BITSET_FOREACH (bitmaps [i], idx, {
4015 void **p = ptr + idx;
4018 mark_func ((MonoObject**)p, gc_data);
4024 mark_tls_slots (void *addr, MonoGCMarkFunc mark_func, void *gc_data)
4026 mark_slots (addr, thread_reference_bitmaps, mark_func, gc_data);
4030 mark_ctx_slots (void *addr, MonoGCMarkFunc mark_func, void *gc_data)
4032 mark_slots (addr, context_reference_bitmaps, mark_func, gc_data);
4036 * mono_alloc_static_data
4038 * Allocate memory blocks for storing threads or context static data
4041 mono_alloc_static_data (gpointer **static_data_ptr, guint32 offset, gboolean threadlocal)
4043 guint idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4046 gpointer* static_data = *static_data_ptr;
4048 static MonoGCDescriptor tls_desc = MONO_GC_DESCRIPTOR_NULL;
4049 static MonoGCDescriptor ctx_desc = MONO_GC_DESCRIPTOR_NULL;
4051 if (mono_gc_user_markers_supported ()) {
4052 if (tls_desc == MONO_GC_DESCRIPTOR_NULL)
4053 tls_desc = mono_gc_make_root_descr_user (mark_tls_slots);
4055 if (ctx_desc == MONO_GC_DESCRIPTOR_NULL)
4056 ctx_desc = mono_gc_make_root_descr_user (mark_ctx_slots);
4059 static_data = (void **)mono_gc_alloc_fixed (static_data_size [0], threadlocal ? tls_desc : ctx_desc,
4060 threadlocal ? MONO_ROOT_SOURCE_THREAD_STATIC : MONO_ROOT_SOURCE_CONTEXT_STATIC,
4061 threadlocal ? "managed thread-static variables" : "managed context-static variables");
4062 *static_data_ptr = static_data;
4063 static_data [0] = static_data;
4066 for (i = 1; i <= idx; ++i) {
4067 if (static_data [i])
4070 if (mono_gc_user_markers_supported ())
4071 static_data [i] = g_malloc0 (static_data_size [i]);
4073 static_data [i] = mono_gc_alloc_fixed (static_data_size [i], MONO_GC_DESCRIPTOR_NULL,
4074 threadlocal ? MONO_ROOT_SOURCE_THREAD_STATIC : MONO_ROOT_SOURCE_CONTEXT_STATIC,
4075 threadlocal ? "managed thread-static variables" : "managed context-static variables");
4080 mono_free_static_data (gpointer* static_data)
4083 for (i = 1; i < NUM_STATIC_DATA_IDX; ++i) {
4084 gpointer p = static_data [i];
4088 * At this point, the static data pointer array is still registered with the
4089 * GC, so must ensure that mark_tls_slots() will not encounter any invalid
4090 * data. Freeing the individual arrays without first nulling their slots
4091 * would make it possible for mark_tls/ctx_slots() to encounter a pointer to
4092 * such an already freed array. See bug #13813.
4094 static_data [i] = NULL;
4095 mono_memory_write_barrier ();
4096 if (mono_gc_user_markers_supported ())
4099 mono_gc_free_fixed (p);
4101 mono_gc_free_fixed (static_data);
4105 * mono_init_static_data_info
4107 * Initializes static data counters
4109 static void mono_init_static_data_info (StaticDataInfo *static_data)
4111 static_data->idx = 0;
4112 static_data->offset = 0;
4113 static_data->freelist = NULL;
4117 * mono_alloc_static_data_slot
4119 * Generates an offset for static data. static_data contains the counters
4120 * used to generate it.
4123 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align)
4125 if (!static_data->idx && !static_data->offset) {
4127 * we use the first chunk of the first allocation also as
4128 * an array for the rest of the data
4130 static_data->offset = sizeof (gpointer) * NUM_STATIC_DATA_IDX;
4132 static_data->offset += align - 1;
4133 static_data->offset &= ~(align - 1);
4134 if (static_data->offset + size >= static_data_size [static_data->idx]) {
4135 static_data->idx ++;
4136 g_assert (size <= static_data_size [static_data->idx]);
4137 g_assert (static_data->idx < NUM_STATIC_DATA_IDX);
4138 static_data->offset = 0;
4140 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (static_data->idx, static_data->offset, 0);
4141 static_data->offset += size;
4146 * ensure thread static fields already allocated are valid for thread
4147 * This function is called when a thread is created or on thread attach.
4150 thread_adjust_static_data (MonoInternalThread *thread)
4152 mono_threads_lock ();
4153 if (thread_static_info.offset || thread_static_info.idx > 0) {
4154 /* get the current allocated size */
4155 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (thread_static_info.idx, thread_static_info.offset, 0);
4156 mono_alloc_static_data (&thread->static_data, offset, TRUE);
4158 mono_threads_unlock ();
4162 * LOCKING: requires that threads_mutex is held
4165 context_adjust_static_data (MonoAppContext *ctx)
4167 if (context_static_info.offset || context_static_info.idx > 0) {
4168 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (context_static_info.idx, context_static_info.offset, 0);
4169 mono_alloc_static_data (&ctx->static_data, offset, FALSE);
4170 ctx->data->static_data = ctx->static_data;
4175 * LOCKING: requires that threads_mutex is held
4178 alloc_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
4180 MonoInternalThread *thread = (MonoInternalThread *)value;
4181 guint32 offset = GPOINTER_TO_UINT (user);
4183 mono_alloc_static_data (&(thread->static_data), offset, TRUE);
4187 * LOCKING: requires that threads_mutex is held
4190 alloc_context_static_data_helper (gpointer key, gpointer value, gpointer user)
4192 MonoAppContext *ctx = (MonoAppContext *) mono_gchandle_get_target (GPOINTER_TO_INT (key));
4197 guint32 offset = GPOINTER_TO_UINT (user);
4198 mono_alloc_static_data (&ctx->static_data, offset, FALSE);
4199 ctx->data->static_data = ctx->static_data;
4202 static StaticDataFreeList*
4203 search_slot_in_freelist (StaticDataInfo *static_data, guint32 size, guint32 align)
4205 StaticDataFreeList* prev = NULL;
4206 StaticDataFreeList* tmp = static_data->freelist;
4208 if (tmp->size == size) {
4210 prev->next = tmp->next;
4212 static_data->freelist = tmp->next;
4221 #if SIZEOF_VOID_P == 4
4228 update_reference_bitmap (MonoBitSet **sets, guint32 offset, uintptr_t *bitmap, int numbits)
4230 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4232 sets [idx] = mono_bitset_new (static_data_size [idx] / sizeof (uintptr_t), 0);
4233 MonoBitSet *rb = sets [idx];
4234 offset = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
4235 offset /= sizeof (uintptr_t);
4236 /* offset is now the bitmap offset */
4237 for (int i = 0; i < numbits; ++i) {
4238 if (bitmap [i / sizeof (uintptr_t)] & (ONE_P << (i & (sizeof (uintptr_t) * 8 -1))))
4239 mono_bitset_set_fast (rb, offset + i);
4244 clear_reference_bitmap (MonoBitSet **sets, guint32 offset, guint32 size)
4246 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4247 MonoBitSet *rb = sets [idx];
4248 offset = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
4249 offset /= sizeof (uintptr_t);
4250 /* offset is now the bitmap offset */
4251 for (int i = 0; i < size / sizeof (uintptr_t); i++)
4252 mono_bitset_clear_fast (rb, offset + i);
4256 mono_alloc_special_static_data (guint32 static_type, guint32 size, guint32 align, uintptr_t *bitmap, int numbits)
4258 g_assert (static_type == SPECIAL_STATIC_THREAD || static_type == SPECIAL_STATIC_CONTEXT);
4260 StaticDataInfo *info;
4263 if (static_type == SPECIAL_STATIC_THREAD) {
4264 info = &thread_static_info;
4265 sets = thread_reference_bitmaps;
4267 info = &context_static_info;
4268 sets = context_reference_bitmaps;
4271 mono_threads_lock ();
4273 StaticDataFreeList *item = search_slot_in_freelist (info, size, align);
4277 offset = item->offset;
4280 offset = mono_alloc_static_data_slot (info, size, align);
4283 update_reference_bitmap (sets, offset, bitmap, numbits);
4285 if (static_type == SPECIAL_STATIC_THREAD) {
4286 /* This can be called during startup */
4287 if (threads != NULL)
4288 mono_g_hash_table_foreach (threads, alloc_thread_static_data_helper, GUINT_TO_POINTER (offset));
4290 if (contexts != NULL)
4291 g_hash_table_foreach (contexts, alloc_context_static_data_helper, GUINT_TO_POINTER (offset));
4293 ACCESS_SPECIAL_STATIC_OFFSET (offset, type) = SPECIAL_STATIC_OFFSET_TYPE_CONTEXT;
4296 mono_threads_unlock ();
4302 mono_get_special_static_data_for_thread (MonoInternalThread *thread, guint32 offset)
4304 guint32 static_type = ACCESS_SPECIAL_STATIC_OFFSET (offset, type);
4306 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4307 return get_thread_static_data (thread, offset);
4309 return get_context_static_data (thread->current_appcontext, offset);
4314 mono_get_special_static_data (guint32 offset)
4316 return mono_get_special_static_data_for_thread (mono_thread_internal_current (), offset);
4325 * LOCKING: requires that threads_mutex is held
4328 free_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
4330 MonoInternalThread *thread = (MonoInternalThread *)value;
4331 OffsetSize *data = (OffsetSize *)user;
4332 int idx = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, index);
4333 int off = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, offset);
4336 if (!thread->static_data || !thread->static_data [idx])
4338 ptr = ((char*) thread->static_data [idx]) + off;
4339 mono_gc_bzero_atomic (ptr, data->size);
4343 * LOCKING: requires that threads_mutex is held
4346 free_context_static_data_helper (gpointer key, gpointer value, gpointer user)
4348 MonoAppContext *ctx = (MonoAppContext *) mono_gchandle_get_target (GPOINTER_TO_INT (key));
4353 OffsetSize *data = (OffsetSize *)user;
4354 int idx = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, index);
4355 int off = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, offset);
4358 if (!ctx->static_data || !ctx->static_data [idx])
4361 ptr = ((char*) ctx->static_data [idx]) + off;
4362 mono_gc_bzero_atomic (ptr, data->size);
4366 do_free_special_slot (guint32 offset, guint32 size)
4368 guint32 static_type = ACCESS_SPECIAL_STATIC_OFFSET (offset, type);
4370 StaticDataInfo *info;
4372 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4373 info = &thread_static_info;
4374 sets = thread_reference_bitmaps;
4376 info = &context_static_info;
4377 sets = context_reference_bitmaps;
4380 guint32 data_offset = offset;
4381 ACCESS_SPECIAL_STATIC_OFFSET (data_offset, type) = 0;
4382 OffsetSize data = { data_offset, size };
4384 clear_reference_bitmap (sets, data.offset, data.size);
4386 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4387 if (threads != NULL)
4388 mono_g_hash_table_foreach (threads, free_thread_static_data_helper, &data);
4390 if (contexts != NULL)
4391 g_hash_table_foreach (contexts, free_context_static_data_helper, &data);
4394 if (!mono_runtime_is_shutting_down ()) {
4395 StaticDataFreeList *item = g_new0 (StaticDataFreeList, 1);
4397 item->offset = offset;
4400 item->next = info->freelist;
4401 info->freelist = item;
4406 do_free_special (gpointer key, gpointer value, gpointer data)
4408 MonoClassField *field = (MonoClassField *)key;
4409 guint32 offset = GPOINTER_TO_UINT (value);
4412 size = mono_type_size (field->type, &align);
4413 do_free_special_slot (offset, size);
4417 mono_alloc_special_static_data_free (GHashTable *special_static_fields)
4419 mono_threads_lock ();
4421 g_hash_table_foreach (special_static_fields, do_free_special, NULL);
4423 mono_threads_unlock ();
4427 static void CALLBACK dummy_apc (ULONG_PTR param)
4433 * mono_thread_execute_interruption
4435 * Performs the operation that the requested thread state requires (abort,
4438 static MonoException*
4439 mono_thread_execute_interruption (void)
4441 MonoInternalThread *thread = mono_thread_internal_current ();
4442 MonoThread *sys_thread = mono_thread_current ();
4444 LOCK_THREAD (thread);
4446 /* MonoThread::interruption_requested can only be changed with atomics */
4447 if (InterlockedCompareExchange (&thread->interruption_requested, FALSE, TRUE)) {
4448 /* this will consume pending APC calls */
4450 WaitForSingleObjectEx (GetCurrentThread(), 0, TRUE);
4452 InterlockedDecrement (&thread_interruption_requested);
4454 /* Clear the interrupted flag of the thread so it can wait again */
4455 mono_thread_info_clear_self_interrupt ();
4458 /* If there's a pending exception and an AbortRequested, the pending exception takes precedence */
4459 if (sys_thread->pending_exception) {
4462 exc = sys_thread->pending_exception;
4463 sys_thread->pending_exception = NULL;
4465 UNLOCK_THREAD (thread);
4467 } else if ((thread->state & ThreadState_AbortRequested) != 0) {
4468 UNLOCK_THREAD (thread);
4469 g_assert (sys_thread->pending_exception == NULL);
4470 if (thread->abort_exc == NULL) {
4472 * This might be racy, but it has to be called outside the lock
4473 * since it calls managed code.
4475 MONO_OBJECT_SETREF (thread, abort_exc, mono_get_exception_thread_abort ());
4477 return thread->abort_exc;
4479 else if ((thread->state & ThreadState_SuspendRequested) != 0) {
4480 /* calls UNLOCK_THREAD (thread) */
4481 self_suspend_internal ();
4484 else if ((thread->state & ThreadState_StopRequested) != 0) {
4485 /* FIXME: do this through the JIT? */
4487 UNLOCK_THREAD (thread);
4489 mono_thread_exit ();
4491 } else if (thread->thread_interrupt_requested) {
4493 thread->thread_interrupt_requested = FALSE;
4494 UNLOCK_THREAD (thread);
4496 return(mono_get_exception_thread_interrupted ());
4499 UNLOCK_THREAD (thread);
4505 * mono_thread_request_interruption
4507 * A signal handler can call this method to request the interruption of a
4508 * thread. The result of the interruption will depend on the current state of
4509 * the thread. If the result is an exception that needs to be throw, it is
4510 * provided as return value.
4513 mono_thread_request_interruption (gboolean running_managed)
4515 MonoInternalThread *thread = mono_thread_internal_current ();
4517 /* The thread may already be stopping */
4522 if (thread->interrupt_on_stop &&
4523 thread->state & ThreadState_StopRequested &&
4524 thread->state & ThreadState_Background)
4528 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4530 InterlockedIncrement (&thread_interruption_requested);
4532 if (!running_managed || is_running_protected_wrapper ()) {
4533 /* Can't stop while in unmanaged code. Increase the global interruption
4534 request count. When exiting the unmanaged method the count will be
4535 checked and the thread will be interrupted. */
4537 /* this will awake the thread if it is in WaitForSingleObject
4539 /* Our implementation of this function ignores the func argument */
4541 QueueUserAPC ((PAPCFUNC)dummy_apc, thread->handle, (ULONG_PTR)NULL);
4543 mono_thread_info_self_interrupt ();
4548 return mono_thread_execute_interruption ();
4552 /*This function should be called by a thread after it has exited all of
4553 * its handle blocks at interruption time.*/
4555 mono_thread_resume_interruption (void)
4557 MonoInternalThread *thread = mono_thread_internal_current ();
4558 gboolean still_aborting;
4560 /* The thread may already be stopping */
4564 LOCK_THREAD (thread);
4565 still_aborting = (thread->state & (ThreadState_AbortRequested|ThreadState_StopRequested)) != 0;
4566 UNLOCK_THREAD (thread);
4568 /*This can happen if the protected block called Thread::ResetAbort*/
4569 if (!still_aborting)
4572 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4574 InterlockedIncrement (&thread_interruption_requested);
4576 mono_thread_info_self_interrupt ();
4578 return mono_thread_execute_interruption ();
4581 gboolean mono_thread_interruption_requested ()
4583 if (thread_interruption_requested) {
4584 MonoInternalThread *thread = mono_thread_internal_current ();
4585 /* The thread may already be stopping */
4587 return (thread->interruption_requested);
4592 static MonoException*
4593 mono_thread_interruption_checkpoint_request (gboolean bypass_abort_protection)
4595 MonoInternalThread *thread = mono_thread_internal_current ();
4597 /* The thread may already be stopping */
4601 if (thread->interruption_requested && (bypass_abort_protection || !is_running_protected_wrapper ())) {
4602 MonoException* exc = mono_thread_execute_interruption ();
4610 * Performs the interruption of the current thread, if one has been requested,
4611 * and the thread is not running a protected wrapper.
4612 * Return the exception which needs to be thrown, if any.
4615 mono_thread_interruption_checkpoint (void)
4617 return mono_thread_interruption_checkpoint_request (FALSE);
4621 * Performs the interruption of the current thread, if one has been requested.
4622 * Return the exception which needs to be thrown, if any.
4625 mono_thread_force_interruption_checkpoint_noraise (void)
4627 return mono_thread_interruption_checkpoint_request (TRUE);
4631 * mono_set_pending_exception:
4633 * Set the pending exception of the current thread to EXC.
4634 * The exception will be thrown when execution returns to managed code.
4637 mono_set_pending_exception (MonoException *exc)
4639 MonoThread *thread = mono_thread_current ();
4641 /* The thread may already be stopping */
4645 MONO_OBJECT_SETREF (thread, pending_exception, exc);
4647 mono_thread_request_interruption (FALSE);
4651 * mono_thread_interruption_request_flag:
4653 * Returns the address of a flag that will be non-zero if an interruption has
4654 * been requested for a thread. The thread to interrupt may not be the current
4655 * thread, so an additional call to mono_thread_interruption_requested() or
4656 * mono_thread_interruption_checkpoint() is allways needed if the flag is not
4659 gint32* mono_thread_interruption_request_flag ()
4661 return &thread_interruption_requested;
4665 mono_thread_init_apartment_state (void)
4668 MonoInternalThread* thread = mono_thread_internal_current ();
4670 /* Positive return value indicates success, either
4671 * S_OK if this is first CoInitialize call, or
4672 * S_FALSE if CoInitialize already called, but with same
4673 * threading model. A negative value indicates failure,
4674 * probably due to trying to change the threading model.
4676 if (CoInitializeEx(NULL, (thread->apartment_state == ThreadApartmentState_STA)
4677 ? COINIT_APARTMENTTHREADED
4678 : COINIT_MULTITHREADED) < 0) {
4679 thread->apartment_state = ThreadApartmentState_Unknown;
4685 mono_thread_cleanup_apartment_state (void)
4688 MonoInternalThread* thread = mono_thread_internal_current ();
4690 if (thread && thread->apartment_state != ThreadApartmentState_Unknown) {
4697 mono_thread_set_state (MonoInternalThread *thread, MonoThreadState state)
4699 LOCK_THREAD (thread);
4700 thread->state |= state;
4701 UNLOCK_THREAD (thread);
4705 mono_thread_clr_state (MonoInternalThread *thread, MonoThreadState state)
4707 LOCK_THREAD (thread);
4708 thread->state &= ~state;
4709 UNLOCK_THREAD (thread);
4713 mono_thread_test_state (MonoInternalThread *thread, MonoThreadState test)
4715 gboolean ret = FALSE;
4717 LOCK_THREAD (thread);
4719 if ((thread->state & test) != 0) {
4723 UNLOCK_THREAD (thread);
4728 static gboolean has_tls_get = FALSE;
4731 mono_runtime_set_has_tls_get (gboolean val)
4737 mono_runtime_has_tls_get (void)
4743 self_interrupt_thread (void *_unused)
4745 MonoThreadInfo *info = mono_thread_info_current ();
4746 MonoException *exc = mono_thread_execute_interruption ();
4747 if (exc) /*We must use _with_context since we didn't trampoline into the runtime*/
4748 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. */
4749 g_assert_not_reached (); /*this MUST not happen since we can't resume from an async call*/
4753 mono_jit_info_match (MonoJitInfo *ji, gpointer ip)
4757 return ji->code_start <= ip && (char*)ip < (char*)ji->code_start + ji->code_size;
4761 last_managed (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
4763 MonoJitInfo **dest = (MonoJitInfo **)data;
4769 mono_thread_info_get_last_managed (MonoThreadInfo *info)
4771 MonoJitInfo *ji = NULL;
4776 * The suspended thread might be holding runtime locks. Make sure we don't try taking
4777 * any runtime locks while unwinding. In coop case we shouldn't safepoint in regions
4778 * where we hold runtime locks.
4780 if (!mono_threads_is_coop_enabled ())
4781 mono_thread_info_set_is_async_context (TRUE);
4782 mono_get_eh_callbacks ()->mono_walk_stack_with_state (last_managed, mono_thread_info_get_suspend_state (info), MONO_UNWIND_SIGNAL_SAFE, &ji);
4783 if (!mono_threads_is_coop_enabled ())
4784 mono_thread_info_set_is_async_context (FALSE);
4789 MonoInternalThread *thread;
4790 gboolean install_async_abort;
4791 MonoThreadInfoInterruptToken *interrupt_token;
4794 static SuspendThreadResult
4795 async_abort_critical (MonoThreadInfo *info, gpointer ud)
4797 AbortThreadData *data = (AbortThreadData *)ud;
4798 MonoInternalThread *thread = data->thread;
4799 MonoJitInfo *ji = NULL;
4800 gboolean protected_wrapper;
4801 gboolean running_managed;
4803 if (mono_get_eh_callbacks ()->mono_install_handler_block_guard (mono_thread_info_get_suspend_state (info)))
4804 return MonoResumeThread;
4806 /*someone is already interrupting it*/
4807 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4808 return MonoResumeThread;
4810 InterlockedIncrement (&thread_interruption_requested);
4812 ji = mono_thread_info_get_last_managed (info);
4813 protected_wrapper = ji && !ji->is_trampoline && !ji->async && mono_threads_is_critical_method (mono_jit_info_get_method (ji));
4814 running_managed = mono_jit_info_match (ji, MONO_CONTEXT_GET_IP (&mono_thread_info_get_suspend_state (info)->ctx));
4816 if (!protected_wrapper && running_managed) {
4817 /*We are in managed code*/
4818 /*Set the thread to call */
4819 if (data->install_async_abort)
4820 mono_thread_info_setup_async_call (info, self_interrupt_thread, NULL);
4821 return MonoResumeThread;
4824 * This will cause waits to be broken.
4825 * It will also prevent the thread from entering a wait, so if the thread returns
4826 * from the wait before it receives the abort signal, it will just spin in the wait
4827 * functions in the io-layer until the signal handler calls QueueUserAPC which will
4830 data->interrupt_token = mono_thread_info_prepare_interrupt (info);
4832 return MonoResumeThread;
4837 async_abort_internal (MonoInternalThread *thread, gboolean install_async_abort)
4839 AbortThreadData data;
4841 g_assert (thread != mono_thread_internal_current ());
4843 data.thread = thread;
4844 data.install_async_abort = install_async_abort;
4845 data.interrupt_token = NULL;
4847 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), TRUE, async_abort_critical, &data);
4848 if (data.interrupt_token)
4849 mono_thread_info_finish_interrupt (data.interrupt_token);
4850 /*FIXME we need to wait for interruption to complete -- figure out how much into interruption we should wait for here*/
4854 self_abort_internal (MonoError *error)
4858 mono_error_init (error);
4860 /* FIXME this is insanely broken, it doesn't cause interruption to happen synchronously
4861 * since passing FALSE to mono_thread_request_interruption makes sure it returns NULL */
4863 exc = mono_thread_request_interruption (TRUE);
4865 mono_error_set_exception_instance (error, exc);
4867 mono_thread_info_self_interrupt ();
4871 MonoInternalThread *thread;
4873 MonoThreadInfoInterruptToken *interrupt_token;
4874 } SuspendThreadData;
4876 static SuspendThreadResult
4877 async_suspend_critical (MonoThreadInfo *info, gpointer ud)
4879 SuspendThreadData *data = (SuspendThreadData *)ud;
4880 MonoInternalThread *thread = data->thread;
4881 MonoJitInfo *ji = NULL;
4882 gboolean protected_wrapper;
4883 gboolean running_managed;
4885 ji = mono_thread_info_get_last_managed (info);
4886 protected_wrapper = ji && !ji->is_trampoline && !ji->async && mono_threads_is_critical_method (mono_jit_info_get_method (ji));
4887 running_managed = mono_jit_info_match (ji, MONO_CONTEXT_GET_IP (&mono_thread_info_get_suspend_state (info)->ctx));
4889 if (running_managed && !protected_wrapper) {
4890 thread->state &= ~ThreadState_SuspendRequested;
4891 thread->state |= ThreadState_Suspended;
4892 return KeepSuspended;
4894 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 0)
4895 InterlockedIncrement (&thread_interruption_requested);
4896 if (data->interrupt)
4897 data->interrupt_token = mono_thread_info_prepare_interrupt ((MonoThreadInfo *)thread->thread_info);
4899 return MonoResumeThread;
4903 /* LOCKING: called with @thread synch_cs held, and releases it */
4905 async_suspend_internal (MonoInternalThread *thread, gboolean interrupt)
4907 SuspendThreadData data;
4909 g_assert (thread != mono_thread_internal_current ());
4911 data.thread = thread;
4912 data.interrupt = interrupt;
4913 data.interrupt_token = NULL;
4915 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), interrupt, async_suspend_critical, &data);
4916 if (data.interrupt_token)
4917 mono_thread_info_finish_interrupt (data.interrupt_token);
4919 UNLOCK_THREAD (thread);
4922 /* LOCKING: called with @thread synch_cs held, and releases it */
4924 self_suspend_internal (void)
4926 MonoInternalThread *thread;
4928 thread = mono_thread_internal_current ();
4930 mono_thread_info_begin_self_suspend ();
4931 thread->state &= ~ThreadState_SuspendRequested;
4932 thread->state |= ThreadState_Suspended;
4934 UNLOCK_THREAD (thread);
4936 mono_thread_info_end_self_suspend ();
4940 * mono_thread_is_foreign:
4941 * @thread: the thread to query
4943 * This function allows one to determine if a thread was created by the mono runtime and has
4944 * a well defined lifecycle or it's a foreigh one, created by the native environment.
4946 * Returns: TRUE if @thread was not created by the runtime.
4949 mono_thread_is_foreign (MonoThread *thread)
4951 MonoThreadInfo *info = (MonoThreadInfo *)thread->internal_thread->thread_info;
4952 return info->runtime_thread == FALSE;
4956 * mono_add_joinable_thread:
4958 * Add TID to the list of joinable threads.
4959 * LOCKING: Acquires the threads lock.
4962 mono_threads_add_joinable_thread (gpointer tid)
4966 * We cannot detach from threads because it causes problems like
4967 * 2fd16f60/r114307. So we collect them and join them when
4968 * we have time (in he finalizer thread).
4970 joinable_threads_lock ();
4971 if (!joinable_threads)
4972 joinable_threads = g_hash_table_new (NULL, NULL);
4973 g_hash_table_insert (joinable_threads, tid, tid);
4974 joinable_thread_count ++;
4975 joinable_threads_unlock ();
4977 mono_gc_finalize_notify ();
4982 * mono_threads_join_threads:
4984 * Join all joinable threads. This is called from the finalizer thread.
4985 * LOCKING: Acquires the threads lock.
4988 mono_threads_join_threads (void)
4991 GHashTableIter iter;
4998 if (!joinable_thread_count)
5002 joinable_threads_lock ();
5004 if (g_hash_table_size (joinable_threads)) {
5005 g_hash_table_iter_init (&iter, joinable_threads);
5006 g_hash_table_iter_next (&iter, &key, (void**)&tid);
5007 thread = (pthread_t)tid;
5008 g_hash_table_remove (joinable_threads, key);
5009 joinable_thread_count --;
5012 joinable_threads_unlock ();
5014 if (thread != pthread_self ()) {
5016 /* This shouldn't block */
5017 pthread_join (thread, NULL);
5030 * Wait for thread TID to exit.
5031 * LOCKING: Acquires the threads lock.
5034 mono_thread_join (gpointer tid)
5038 gboolean found = FALSE;
5040 joinable_threads_lock ();
5041 if (!joinable_threads)
5042 joinable_threads = g_hash_table_new (NULL, NULL);
5043 if (g_hash_table_lookup (joinable_threads, tid)) {
5044 g_hash_table_remove (joinable_threads, tid);
5045 joinable_thread_count --;
5048 joinable_threads_unlock ();
5051 thread = (pthread_t)tid;
5053 pthread_join (thread, NULL);
5059 mono_thread_internal_check_for_interruption_critical (MonoInternalThread *thread)
5061 if ((thread->state & (ThreadState_StopRequested | ThreadState_SuspendRequested)) != 0)
5062 mono_thread_interruption_checkpoint ();
5066 mono_thread_internal_unhandled_exception (MonoObject* exc)
5068 if (mono_runtime_unhandled_exception_policy_get () == MONO_UNHANDLED_POLICY_CURRENT) {
5069 MonoClass *klass = exc->vtable->klass;
5070 if (is_threadabort_exception (klass)) {
5071 mono_thread_internal_reset_abort (mono_thread_internal_current ());
5072 } else if (!is_appdomainunloaded_exception (klass)) {
5073 mono_unhandled_exception (exc);
5074 if (mono_environment_exitcode_get () == 1) {
5075 mono_environment_exitcode_set (255);
5076 mono_invoke_unhandled_exception_hook (exc);
5077 g_assert_not_reached ();
5084 ves_icall_System_Threading_Thread_GetStackTraces (MonoArray **out_threads, MonoArray **out_stack_traces)
5087 mono_threads_get_thread_dump (out_threads, out_stack_traces, &error);
5088 mono_error_set_pending_exception (&error);
5092 * mono_threads_attach_coop: called by native->managed wrappers
5096 * - @return: the original domain which needs to be restored, or NULL.
5099 * - @dummy: contains the original domain
5100 * - @return: a cookie containing current MonoThreadInfo*.
5103 mono_threads_attach_coop (MonoDomain *domain, gpointer *dummy)
5106 gboolean fresh_thread = FALSE;
5109 /* Happens when called from AOTed code which is only used in the root domain. */
5110 domain = mono_get_root_domain ();
5115 /* On coop, when we detached, we moved the thread from RUNNING->BLOCKING.
5116 * If we try to reattach we do a BLOCKING->RUNNING transition. If the thread
5117 * is fresh, mono_thread_attach() will do a STARTING->RUNNING transition so
5118 * we're only responsible for making the cookie. */
5119 if (mono_threads_is_coop_enabled ()) {
5120 MonoThreadInfo *info = mono_thread_info_current_unchecked ();
5121 fresh_thread = !info || !mono_thread_info_is_live (info);
5124 if (!mono_thread_internal_current ()) {
5125 mono_thread_attach_full (domain, FALSE);
5128 mono_thread_set_state (mono_thread_internal_current (), ThreadState_Background);
5131 orig = mono_domain_get ();
5133 mono_domain_set (domain, TRUE);
5135 if (!mono_threads_is_coop_enabled ())
5136 return orig != domain ? orig : NULL;
5140 /* mono_thread_attach put the thread in RUNNING mode from STARTING, but we need to
5141 * return the right cookie. */
5142 return mono_threads_enter_gc_unsafe_region_cookie ();
5145 /* thread state (BLOCKING|RUNNING) -> RUNNING */
5146 return mono_threads_enter_gc_unsafe_region (dummy);
5151 * mono_threads_detach_coop: called by native->managed wrappers
5154 * - @cookie: the original domain which needs to be restored, or NULL.
5158 * - @cookie: contains current MonoThreadInfo* if it was in BLOCKING mode, NULL otherwise
5159 * - @dummy: contains the original domain
5162 mono_threads_detach_coop (gpointer cookie, gpointer *dummy)
5164 MonoDomain *domain, *orig;
5166 if (!mono_threads_is_coop_enabled ()) {
5167 orig = (MonoDomain*) cookie;
5169 mono_domain_set (orig, TRUE);
5171 orig = (MonoDomain*) *dummy;
5173 domain = mono_domain_get ();
5176 /* it won't do anything if cookie is NULL
5177 * thread state RUNNING -> (RUNNING|BLOCKING) */
5178 mono_threads_exit_gc_unsafe_region (cookie, dummy);
5180 if (orig != domain) {
5182 mono_domain_unset ();
5184 mono_domain_set (orig, TRUE);