2 * threads.c: Thread support internal calls
5 * Dick Porter (dick@ximian.com)
6 * Paolo Molaro (lupus@ximian.com)
7 * Patrik Torstensson (patrik.torstensson@labs2.com)
9 * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
10 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
11 * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
12 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
20 #include <mono/metadata/object.h>
21 #include <mono/metadata/domain-internals.h>
22 #include <mono/metadata/profiler-private.h>
23 #include <mono/metadata/threads.h>
24 #include <mono/metadata/threads-types.h>
25 #include <mono/metadata/exception.h>
26 #include <mono/metadata/environment.h>
27 #include <mono/metadata/monitor.h>
28 #include <mono/metadata/gc-internals.h>
29 #include <mono/metadata/marshal.h>
30 #include <mono/metadata/runtime.h>
31 #include <mono/io-layer/io-layer.h>
32 #include <mono/metadata/object-internals.h>
33 #include <mono/metadata/mono-debug-debugger.h>
34 #include <mono/utils/monobitset.h>
35 #include <mono/utils/mono-compiler.h>
36 #include <mono/utils/mono-mmap.h>
37 #include <mono/utils/mono-membar.h>
38 #include <mono/utils/mono-time.h>
39 #include <mono/utils/mono-threads.h>
40 #include <mono/utils/mono-threads-coop.h>
41 #include <mono/utils/hazard-pointer.h>
42 #include <mono/utils/mono-tls.h>
43 #include <mono/utils/atomic.h>
44 #include <mono/utils/mono-memory-model.h>
45 #include <mono/utils/mono-threads-coop.h>
46 #include <mono/utils/mono-error-internals.h>
47 #include <mono/utils/w32handle.h>
49 #include <mono/metadata/gc-internals.h>
50 #include <mono/metadata/reflection-internals.h>
56 #if defined(PLATFORM_ANDROID) && !defined(TARGET_ARM64) && !defined(TARGET_AMD64)
57 #define USE_TKILL_ON_ANDROID 1
60 #ifdef PLATFORM_ANDROID
63 #ifdef USE_TKILL_ON_ANDROID
64 extern int tkill (pid_t tid, int signal);
68 /*#define THREAD_DEBUG(a) do { a; } while (0)*/
69 #define THREAD_DEBUG(a)
70 /*#define THREAD_WAIT_DEBUG(a) do { a; } while (0)*/
71 #define THREAD_WAIT_DEBUG(a)
72 /*#define LIBGC_DEBUG(a) do { a; } while (0)*/
73 #define LIBGC_DEBUG(a)
75 #define SPIN_TRYLOCK(i) (InterlockedCompareExchange (&(i), 1, 0) == 0)
76 #define SPIN_LOCK(i) do { \
77 if (SPIN_TRYLOCK (i)) \
81 #define SPIN_UNLOCK(i) i = 0
83 #define LOCK_THREAD(thread) lock_thread((thread))
84 #define UNLOCK_THREAD(thread) unlock_thread((thread))
88 guint32 (*func)(void *);
104 typedef struct _StaticDataFreeList StaticDataFreeList;
105 struct _StaticDataFreeList {
106 StaticDataFreeList *next;
114 StaticDataFreeList *freelist;
117 /* Number of cached culture objects in the MonoThread->cached_culture_info array
118 * (per-type): we use the first NUM entries for CultureInfo and the last for
119 * UICultureInfo. So the size of the array is really NUM_CACHED_CULTURES * 2.
121 #define NUM_CACHED_CULTURES 4
122 #define CULTURES_START_IDX 0
123 #define UICULTURES_START_IDX NUM_CACHED_CULTURES
125 /* Controls access to the 'threads' hash table */
126 static void mono_threads_lock (void);
127 static void mono_threads_unlock (void);
128 static MonoCoopMutex threads_mutex;
130 /* Controls access to the 'joinable_threads' hash table */
131 #define joinable_threads_lock() mono_os_mutex_lock (&joinable_threads_mutex)
132 #define joinable_threads_unlock() mono_os_mutex_unlock (&joinable_threads_mutex)
133 static mono_mutex_t joinable_threads_mutex;
135 /* Holds current status of static data heap */
136 static StaticDataInfo thread_static_info;
137 static StaticDataInfo context_static_info;
139 /* The hash of existing threads (key is thread ID, value is
140 * MonoInternalThread*) that need joining before exit
142 static MonoGHashTable *threads=NULL;
144 /* List of app context GC handles.
145 * Added to from ves_icall_System_Runtime_Remoting_Contexts_Context_RegisterContext ().
147 static GHashTable *contexts = NULL;
149 /* Cleanup queue for contexts. */
150 static MonoReferenceQueue *context_queue;
153 * Threads which are starting up and they are not in the 'threads' hash yet.
154 * When handle_store is called for a thread, it will be removed from this hash table.
155 * Protected by mono_threads_lock ().
157 static MonoGHashTable *threads_starting_up = NULL;
159 /* The TLS key that holds the MonoObject assigned to each thread */
160 static MonoNativeTlsKey current_object_key;
163 /* Protected by the threads lock */
164 static GHashTable *joinable_threads;
165 static int joinable_thread_count;
167 #ifdef MONO_HAVE_FAST_TLS
168 /* we need to use both the Tls* functions and __thread because
169 * the gc needs to see all the threads
171 MONO_FAST_TLS_DECLARE(tls_current_object);
172 #define SET_CURRENT_OBJECT(x) do { \
173 MONO_FAST_TLS_SET (tls_current_object, x); \
174 mono_native_tls_set_value (current_object_key, x); \
176 #define GET_CURRENT_OBJECT() ((MonoInternalThread*) MONO_FAST_TLS_GET (tls_current_object))
178 #define SET_CURRENT_OBJECT(x) mono_native_tls_set_value (current_object_key, x)
179 #define GET_CURRENT_OBJECT() (MonoInternalThread*) mono_native_tls_get_value (current_object_key)
182 /* function called at thread start */
183 static MonoThreadStartCB mono_thread_start_cb = NULL;
185 /* function called at thread attach */
186 static MonoThreadAttachCB mono_thread_attach_cb = NULL;
188 /* function called at thread cleanup */
189 static MonoThreadCleanupFunc mono_thread_cleanup_fn = NULL;
191 /* The default stack size for each thread */
192 static guint32 default_stacksize = 0;
193 #define default_stacksize_for_thread(thread) ((thread)->stack_size? (thread)->stack_size: default_stacksize)
195 static void thread_adjust_static_data (MonoInternalThread *thread);
196 static void context_adjust_static_data (MonoAppContext *ctx);
197 static void mono_free_static_data (gpointer* static_data);
198 static void mono_init_static_data_info (StaticDataInfo *static_data);
199 static guint32 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align);
200 static gboolean mono_thread_resume (MonoInternalThread* thread);
201 static void async_abort_internal (MonoInternalThread *thread, gboolean install_async_abort);
202 static void self_abort_internal (MonoError *error);
203 static void async_suspend_internal (MonoInternalThread *thread, gboolean interrupt);
204 static void self_suspend_internal (void);
206 static MonoException* mono_thread_execute_interruption (void);
207 static void ref_stack_destroy (gpointer rs);
209 /* Spin lock for InterlockedXXX 64 bit functions */
210 #define mono_interlocked_lock() mono_os_mutex_lock (&interlocked_mutex)
211 #define mono_interlocked_unlock() mono_os_mutex_unlock (&interlocked_mutex)
212 static mono_mutex_t interlocked_mutex;
214 /* global count of thread interruptions requested */
215 static gint32 thread_interruption_requested = 0;
217 /* Event signaled when a thread changes its background mode */
218 static HANDLE background_change_event;
220 static gboolean shutting_down = FALSE;
222 static gint32 managed_thread_id_counter = 0;
224 /* Class lazy loading functions */
225 static GENERATE_GET_CLASS_WITH_CACHE (appdomain_unloaded_exception, System, AppDomainUnloadedException)
228 mono_threads_lock (void)
230 mono_locks_coop_acquire (&threads_mutex, ThreadsLock);
234 mono_threads_unlock (void)
236 mono_locks_coop_release (&threads_mutex, ThreadsLock);
241 get_next_managed_thread_id (void)
243 return InterlockedIncrement (&managed_thread_id_counter);
247 mono_thread_get_tls_key (void)
249 return current_object_key;
253 mono_thread_get_tls_offset (void)
258 if (current_object_key)
259 offset = current_object_key;
261 MONO_THREAD_VAR_OFFSET (tls_current_object,offset);
266 static inline MonoNativeThreadId
267 thread_get_tid (MonoInternalThread *thread)
269 /* We store the tid as a guint64 to keep the object layout constant between platforms */
270 return MONO_UINT_TO_NATIVE_THREAD_ID (thread->tid);
273 /* handle_store() and handle_remove() manage the array of threads that
274 * still need to be waited for when the main thread exits.
276 * If handle_store() returns FALSE the thread must not be started
277 * because Mono is shutting down.
279 static gboolean handle_store(MonoThread *thread, gboolean force_attach)
281 mono_threads_lock ();
283 THREAD_DEBUG (g_message ("%s: thread %p ID %"G_GSIZE_FORMAT, __func__, thread, (gsize)thread->internal_thread->tid));
285 if (threads_starting_up)
286 mono_g_hash_table_remove (threads_starting_up, thread);
288 if (shutting_down && !force_attach) {
289 mono_threads_unlock ();
294 MONO_GC_REGISTER_ROOT_FIXED (threads, MONO_ROOT_SOURCE_THREADING, "threads table");
295 threads=mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_VALUE_GC, MONO_ROOT_SOURCE_THREADING, "threads table");
298 /* We don't need to duplicate thread->handle, because it is
299 * only closed when the thread object is finalized by the GC.
301 g_assert (thread->internal_thread);
302 mono_g_hash_table_insert(threads, (gpointer)(gsize)(thread->internal_thread->tid),
303 thread->internal_thread);
305 mono_threads_unlock ();
310 static gboolean handle_remove(MonoInternalThread *thread)
313 gsize tid = thread->tid;
315 THREAD_DEBUG (g_message ("%s: thread ID %"G_GSIZE_FORMAT, __func__, tid));
317 mono_threads_lock ();
320 /* We have to check whether the thread object for the
321 * tid is still the same in the table because the
322 * thread might have been destroyed and the tid reused
323 * in the meantime, in which case the tid would be in
324 * the table, but with another thread object.
326 if (mono_g_hash_table_lookup (threads, (gpointer)tid) == thread) {
327 mono_g_hash_table_remove (threads, (gpointer)tid);
336 mono_threads_unlock ();
338 /* Don't close the handle here, wait for the object finalizer
339 * to do it. Otherwise, the following race condition applies:
341 * 1) Thread exits (and handle_remove() closes the handle)
343 * 2) Some other handle is reassigned the same slot
345 * 3) Another thread tries to join the first thread, and
346 * blocks waiting for the reassigned handle to be signalled
347 * (which might never happen). This is possible, because the
348 * thread calling Join() still has a reference to the first
354 static void ensure_synch_cs_set (MonoInternalThread *thread)
356 MonoCoopMutex *synch_cs;
358 if (thread->synch_cs != NULL) {
362 synch_cs = g_new0 (MonoCoopMutex, 1);
363 mono_coop_mutex_init_recursive (synch_cs);
365 if (InterlockedCompareExchangePointer ((gpointer *)&thread->synch_cs,
366 synch_cs, NULL) != NULL) {
367 /* Another thread must have installed this CS */
368 mono_coop_mutex_destroy (synch_cs);
374 lock_thread (MonoInternalThread *thread)
376 if (!thread->synch_cs)
377 ensure_synch_cs_set (thread);
379 g_assert (thread->synch_cs);
381 mono_coop_mutex_lock (thread->synch_cs);
385 unlock_thread (MonoInternalThread *thread)
387 mono_coop_mutex_unlock (thread->synch_cs);
390 static inline gboolean
391 is_appdomainunloaded_exception (MonoClass *klass)
393 return klass == mono_class_get_appdomain_unloaded_exception_class ();
396 static inline gboolean
397 is_threadabort_exception (MonoClass *klass)
399 return klass == mono_defaults.threadabortexception_class;
403 * NOTE: this function can be called also for threads different from the current one:
404 * make sure no code called from it will ever assume it is run on the thread that is
405 * getting cleaned up.
407 static void thread_cleanup (MonoInternalThread *thread)
409 g_assert (thread != NULL);
411 if (thread->abort_state_handle) {
412 mono_gchandle_free (thread->abort_state_handle);
413 thread->abort_state_handle = 0;
415 thread->abort_exc = NULL;
416 thread->current_appcontext = NULL;
419 * This is necessary because otherwise we might have
420 * cross-domain references which will not get cleaned up when
421 * the target domain is unloaded.
423 if (thread->cached_culture_info) {
425 for (i = 0; i < NUM_CACHED_CULTURES * 2; ++i)
426 mono_array_set (thread->cached_culture_info, MonoObject*, i, NULL);
430 * thread->synch_cs can be NULL if this was called after
431 * ves_icall_System_Threading_InternalThread_Thread_free_internal.
432 * This can happen only during shutdown.
433 * The shutting_down flag is not always set, so we can't assert on it.
435 if (thread->synch_cs)
436 LOCK_THREAD (thread);
438 thread->state |= ThreadState_Stopped;
439 thread->state &= ~ThreadState_Background;
441 if (thread->synch_cs)
442 UNLOCK_THREAD (thread);
445 An interruption request has leaked to cleanup. Adjust the global counter.
447 This can happen is the abort source thread finds the abortee (this) thread
448 in unmanaged code. If this thread never trips back to managed code or check
449 the local flag it will be left set and positively unbalance the global counter.
451 Leaving the counter unbalanced will cause a performance degradation since all threads
452 will now keep checking their local flags all the time.
454 if (InterlockedExchange (&thread->interruption_requested, 0))
455 InterlockedDecrement (&thread_interruption_requested);
457 /* if the thread is not in the hash it has been removed already */
458 if (!handle_remove (thread)) {
459 if (thread == mono_thread_internal_current ()) {
460 mono_domain_unset ();
461 mono_memory_barrier ();
463 /* This needs to be called even if handle_remove () fails */
464 if (mono_thread_cleanup_fn)
465 mono_thread_cleanup_fn (thread_get_tid (thread));
468 mono_release_type_locks (thread);
470 /* Can happen when we attach the profiler helper thread in order to heapshot. */
471 if (!mono_thread_info_lookup (MONO_UINT_TO_NATIVE_THREAD_ID (thread->tid))->tools_thread)
472 mono_profiler_thread_end (thread->tid);
474 mono_hazard_pointer_clear (mono_hazard_pointer_get (), 1);
476 if (thread == mono_thread_internal_current ()) {
478 * This will signal async signal handlers that the thread has exited.
479 * The profiler callback needs this to be set, so it cannot be done earlier.
481 mono_domain_unset ();
482 mono_memory_barrier ();
485 if (thread == mono_thread_internal_current ())
486 mono_thread_pop_appdomain_ref ();
488 thread->cached_culture_info = NULL;
490 mono_free_static_data (thread->static_data);
491 thread->static_data = NULL;
492 ref_stack_destroy (thread->appdomain_refs);
493 thread->appdomain_refs = NULL;
495 if (mono_thread_cleanup_fn)
496 mono_thread_cleanup_fn (thread_get_tid (thread));
498 if (mono_gc_is_moving ()) {
499 MONO_GC_UNREGISTER_ROOT (thread->thread_pinning_ref);
500 thread->thread_pinning_ref = NULL;
506 * A special static data offset (guint32) consists of 3 parts:
508 * [0] 6-bit index into the array of chunks.
509 * [6] 25-bit offset into the array.
510 * [31] Bit indicating thread or context static.
515 #if G_BYTE_ORDER != G_LITTLE_ENDIAN
526 } SpecialStaticOffset;
528 #define SPECIAL_STATIC_OFFSET_TYPE_THREAD 0
529 #define SPECIAL_STATIC_OFFSET_TYPE_CONTEXT 1
531 #define MAKE_SPECIAL_STATIC_OFFSET(index, offset, type) \
532 ((SpecialStaticOffset) { .fields = { (index), (offset), (type) } }.raw)
533 #define ACCESS_SPECIAL_STATIC_OFFSET(x,f) \
534 (((SpecialStaticOffset *) &(x))->fields.f)
537 get_thread_static_data (MonoInternalThread *thread, guint32 offset)
539 g_assert (ACCESS_SPECIAL_STATIC_OFFSET (offset, type) == SPECIAL_STATIC_OFFSET_TYPE_THREAD);
541 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
542 int off = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
544 return ((char *) thread->static_data [idx]) + off;
548 get_context_static_data (MonoAppContext *ctx, guint32 offset)
550 g_assert (ACCESS_SPECIAL_STATIC_OFFSET (offset, type) == SPECIAL_STATIC_OFFSET_TYPE_CONTEXT);
552 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
553 int off = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
555 return ((char *) ctx->static_data [idx]) + off;
559 get_current_thread_ptr_for_domain (MonoDomain *domain, MonoInternalThread *thread)
561 static MonoClassField *current_thread_field = NULL;
565 if (!current_thread_field) {
566 current_thread_field = mono_class_get_field_from_name (mono_defaults.thread_class, "current_thread");
567 g_assert (current_thread_field);
570 mono_class_vtable (domain, mono_defaults.thread_class);
571 mono_domain_lock (domain);
572 offset = GPOINTER_TO_UINT (g_hash_table_lookup (domain->special_static_fields, current_thread_field));
573 mono_domain_unlock (domain);
576 return (MonoThread **)get_thread_static_data (thread, offset);
580 set_current_thread_for_domain (MonoDomain *domain, MonoInternalThread *thread, MonoThread *current)
582 MonoThread **current_thread_ptr = get_current_thread_ptr_for_domain (domain, thread);
584 g_assert (current->obj.vtable->domain == domain);
586 g_assert (!*current_thread_ptr);
587 *current_thread_ptr = current;
591 create_thread_object (MonoDomain *domain)
594 MonoVTable *vt = mono_class_vtable (domain, mono_defaults.thread_class);
595 MonoThread *t = (MonoThread*)mono_object_new_mature (vt, &error);
596 /* only possible failure mode is OOM, from which we don't expect to recover. */
597 mono_error_assert_ok (&error);
602 new_thread_with_internal (MonoDomain *domain, MonoInternalThread *internal)
606 thread = create_thread_object (domain);
607 thread->priority = MONO_THREAD_PRIORITY_NORMAL;
609 MONO_OBJECT_SETREF (thread, internal_thread, internal);
614 static MonoInternalThread*
615 create_internal_thread (void)
618 MonoInternalThread *thread;
621 vt = mono_class_vtable (mono_get_root_domain (), mono_defaults.internal_thread_class);
622 thread = (MonoInternalThread*) mono_object_new_mature (vt, &error);
623 /* only possible failure mode is OOM, from which we don't exect to recover */
624 mono_error_assert_ok (&error);
626 thread->synch_cs = g_new0 (MonoCoopMutex, 1);
627 mono_coop_mutex_init_recursive (thread->synch_cs);
629 thread->apartment_state = ThreadApartmentState_Unknown;
630 thread->managed_id = get_next_managed_thread_id ();
631 if (mono_gc_is_moving ()) {
632 thread->thread_pinning_ref = thread;
633 MONO_GC_REGISTER_ROOT_PINNING (thread->thread_pinning_ref, MONO_ROOT_SOURCE_THREADING, "thread pinning reference");
640 init_root_domain_thread (MonoInternalThread *thread, MonoThread *candidate)
642 MonoDomain *domain = mono_get_root_domain ();
644 if (!candidate || candidate->obj.vtable->domain != domain) {
645 candidate = new_thread_with_internal (domain, thread);
647 set_current_thread_for_domain (domain, thread, candidate);
648 g_assert (!thread->root_domain_thread);
649 MONO_OBJECT_SETREF (thread, root_domain_thread, candidate);
653 static guint32 WINAPI start_wrapper_internal(void *data)
656 MonoThreadInfo *info;
657 StartInfo *start_info = (StartInfo *)data;
658 guint32 (*start_func)(void *);
662 * We don't create a local to hold start_info->obj, so hopefully it won't get pinned during a
665 MonoInternalThread *internal = start_info->obj->internal_thread;
666 MonoObject *start_delegate = start_info->delegate;
667 MonoDomain *domain = start_info->obj->obj.vtable->domain;
669 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper", __func__, mono_native_thread_id_get ()));
671 /* We can be sure start_info->obj->tid and
672 * start_info->obj->handle have been set, because the thread
673 * was created suspended, and these values were set before the
677 info = mono_thread_info_current ();
679 internal->thread_info = info;
680 internal->small_id = info->small_id;
684 SET_CURRENT_OBJECT (internal);
686 /* Every thread references the appdomain which created it */
687 mono_thread_push_appdomain_ref (domain);
689 if (!mono_domain_set (domain, FALSE)) {
690 /* No point in raising an appdomain_unloaded exception here */
691 /* FIXME: Cleanup here */
692 mono_thread_pop_appdomain_ref ();
696 start_func = start_info->func;
697 start_arg = start_info->obj->start_obj;
699 start_arg = start_info->start_arg;
701 /* We have to do this here because mono_thread_new_init()
702 requires that root_domain_thread is set up. */
703 thread_adjust_static_data (internal);
704 init_root_domain_thread (internal, start_info->obj);
706 /* This MUST be called before any managed code can be
707 * executed, as it calls the callback function that (for the
708 * jit) sets the lmf marker.
710 mono_thread_new_init (tid, &tid, start_func);
711 internal->stack_ptr = &tid;
712 if (domain != mono_get_root_domain ())
713 set_current_thread_for_domain (domain, internal, start_info->obj);
715 LIBGC_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT",%d) Setting thread stack to %p", __func__, mono_native_thread_id_get (), getpid (), thread->stack_ptr));
717 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Setting current_object_key to %p", __func__, mono_native_thread_id_get (), internal));
719 /* On 2.0 profile (and higher), set explicitly since state might have been
721 if (internal->apartment_state == ThreadApartmentState_Unknown)
722 internal->apartment_state = ThreadApartmentState_MTA;
724 mono_thread_init_apartment_state ();
726 if (internal->start_notify)
727 /* Let the thread that called Start() know we're
730 mono_coop_sem_post (internal->start_notify);
732 if (InterlockedDecrement ((gint32*)&internal->start_notify_refcount) == 0) {
733 mono_coop_sem_destroy (internal->start_notify);
734 g_free (internal->start_notify);
735 internal->start_notify = NULL;
739 THREAD_DEBUG (g_message ("%s: start_wrapper for %"G_GSIZE_FORMAT, __func__,
743 * Call this after calling start_notify, since the profiler callback might want
744 * to lock the thread, and the lock is held by thread_start () which waits for
747 mono_profiler_thread_start (tid);
749 /* if the name was set before starting, we didn't invoke the profiler callback */
750 if (internal->name) {
751 char *tname = g_utf16_to_utf8 (internal->name, internal->name_len, NULL, NULL, NULL);
752 mono_profiler_thread_name (internal->tid, tname);
753 mono_native_thread_set_name (MONO_UINT_TO_NATIVE_THREAD_ID (internal->tid), tname);
757 /* start_func is set only for unmanaged start functions */
759 start_func (start_arg);
762 g_assert (start_delegate != NULL);
763 args [0] = start_arg;
764 /* we may want to handle the exception here. See comment below on unhandled exceptions */
765 mono_runtime_delegate_invoke_checked (start_delegate, args, &error);
767 if (!mono_error_ok (&error)) {
768 MonoException *ex = mono_error_convert_to_exception (&error);
770 g_assert (ex != NULL);
771 MonoClass *klass = mono_object_get_class (&ex->object);
772 if ((mono_runtime_unhandled_exception_policy_get () != MONO_UNHANDLED_POLICY_LEGACY) &&
773 !is_threadabort_exception (klass)) {
774 mono_unhandled_exception (&ex->object);
775 mono_invoke_unhandled_exception_hook (&ex->object);
776 g_assert_not_reached ();
779 mono_error_cleanup (&error);
783 /* If the thread calls ExitThread at all, this remaining code
784 * will not be executed, but the main thread will eventually
785 * call thread_cleanup() on this thread's behalf.
788 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper terminating", __func__, mono_native_thread_id_get ()));
790 /* Do any cleanup needed for apartment state. This
791 * cannot be done in thread_cleanup since thread_cleanup could be
792 * called for a thread other than the current thread.
793 * mono_thread_cleanup_apartment_state cleans up apartment
794 * for the current thead */
795 mono_thread_cleanup_apartment_state ();
797 thread_cleanup (internal);
801 /* Remove the reference to the thread object in the TLS data,
802 * so the thread object can be finalized. This won't be
803 * reached if the thread threw an uncaught exception, so those
804 * thread handles will stay referenced :-( (This is due to
805 * missing support for scanning thread-specific data in the
806 * Boehm GC - the io-layer keeps a GC-visible hash of pointers
809 SET_CURRENT_OBJECT (NULL);
814 static gsize WINAPI start_wrapper(void *data)
818 /* Avoid scanning the frames above this frame during a GC */
819 mono_gc_set_stack_end ((void*)&dummy);
821 return start_wrapper_internal (data);
827 * Common thread creation code.
828 * LOCKING: Acquires the threads lock.
831 create_thread (MonoThread *thread, MonoInternalThread *internal, StartInfo *start_info, gboolean threadpool_thread, guint32 stack_size,
834 HANDLE thread_handle;
835 MonoNativeThreadId tid;
839 * Join joinable threads to prevent running out of threads since the finalizer
840 * thread might be blocked/backlogged.
842 mono_threads_join_threads ();
844 mono_error_init (error);
846 mono_threads_lock ();
849 mono_threads_unlock ();
852 if (threads_starting_up == NULL) {
853 MONO_GC_REGISTER_ROOT_FIXED (threads_starting_up, MONO_ROOT_SOURCE_THREADING, "starting threads table");
854 threads_starting_up = mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_KEY_VALUE_GC, MONO_ROOT_SOURCE_THREADING, "starting threads table");
856 mono_g_hash_table_insert (threads_starting_up, thread, thread);
857 mono_threads_unlock ();
859 internal->start_notify = g_new0 (MonoCoopSem, 1);
860 mono_coop_sem_init (internal->start_notify, 0);
861 internal->start_notify_refcount = 2;
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);
905 * Wait for the thread to set up its TLS data etc, so
906 * theres no potential race condition if someone tries
907 * to look up the data believing the thread has
910 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));
912 mono_coop_sem_wait (internal->start_notify, MONO_SEM_FLAGS_NONE);
913 if (InterlockedDecrement ((gint32*)&internal->start_notify_refcount) == 0) {
914 mono_coop_sem_destroy (internal->start_notify);
915 g_free (internal->start_notify);
916 internal->start_notify = NULL;
919 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));
924 void mono_thread_new_init (intptr_t tid, gpointer stack_start, gpointer func)
926 if (mono_thread_start_cb) {
927 mono_thread_start_cb (tid, stack_start, func);
931 void mono_threads_set_default_stacksize (guint32 stacksize)
933 default_stacksize = stacksize;
936 guint32 mono_threads_get_default_stacksize (void)
938 return default_stacksize;
942 * mono_thread_create_internal:
944 * ARG should not be a GC reference.
947 mono_thread_create_internal (MonoDomain *domain, gpointer func, gpointer arg, gboolean threadpool_thread, guint32 stack_size, MonoError *error)
950 MonoInternalThread *internal;
951 StartInfo *start_info;
954 mono_error_init (error);
956 thread = create_thread_object (domain);
957 thread->priority = MONO_THREAD_PRIORITY_NORMAL;
959 internal = create_internal_thread ();
961 MONO_OBJECT_SETREF (thread, internal_thread, internal);
963 start_info = g_new0 (StartInfo, 1);
964 start_info->func = (guint32 (*)(void *))func;
965 start_info->obj = thread;
966 start_info->start_arg = arg;
968 res = create_thread (thread, internal, start_info, threadpool_thread, stack_size, error);
969 return_val_if_nok (error, NULL);
971 /* Check that the managed and unmanaged layout of MonoInternalThread matches */
972 #ifndef MONO_CROSS_COMPILE
973 if (mono_check_corlib_version () == NULL)
974 g_assert (((char*)&internal->unused2 - (char*)internal) == mono_defaults.internal_thread_class->fields [mono_defaults.internal_thread_class->field.count - 1].offset);
981 mono_thread_create (MonoDomain *domain, gpointer func, gpointer arg)
984 if (!mono_thread_create_checked (domain, func, arg, &error))
985 mono_error_cleanup (&error);
989 mono_thread_create_checked (MonoDomain *domain, gpointer func, gpointer arg, MonoError *error)
991 return (NULL != mono_thread_create_internal (domain, func, arg, FALSE, 0, error));
995 mono_thread_attach (MonoDomain *domain)
997 MonoThread *thread = mono_thread_attach_full (domain, FALSE);
1003 mono_thread_attach_full (MonoDomain *domain, gboolean force_attach)
1005 MonoThreadInfo *info;
1006 MonoInternalThread *thread;
1007 MonoThread *current_thread;
1008 MonoNativeThreadId tid;
1010 if ((thread = mono_thread_internal_current ())) {
1011 if (domain != mono_domain_get ())
1012 mono_domain_set (domain, TRUE);
1013 /* Already attached */
1014 return mono_thread_current ();
1017 if (!mono_gc_register_thread (&domain)) {
1018 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 ());
1021 info = mono_thread_info_current ();
1023 tid=mono_native_thread_id_get ();
1025 thread = create_internal_thread ();
1026 thread->handle = mono_thread_info_get_handle (info);
1027 thread->tid = MONO_NATIVE_THREAD_ID_TO_UINT (tid);
1028 thread->stack_ptr = &tid;
1030 THREAD_DEBUG (g_message ("%s: Attached thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread->handle));
1032 thread->thread_info = info;
1033 thread->small_id = info->small_id;
1035 current_thread = new_thread_with_internal (domain, thread);
1037 if (!handle_store (current_thread, force_attach)) {
1038 /* Mono is shutting down, so just wait for the end */
1040 mono_thread_info_sleep (10000, NULL);
1043 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Setting current_object_key to %p", __func__, mono_native_thread_id_get (), thread));
1045 SET_CURRENT_OBJECT (thread);
1046 mono_domain_set (domain, TRUE);
1048 thread_adjust_static_data (thread);
1050 init_root_domain_thread (thread, current_thread);
1052 if (domain != mono_get_root_domain ())
1053 set_current_thread_for_domain (domain, thread, current_thread);
1056 if (mono_thread_attach_cb) {
1060 mono_thread_info_get_stack_bounds (&staddr, &stsize);
1063 mono_thread_attach_cb (MONO_NATIVE_THREAD_ID_TO_UINT (tid), &tid);
1065 mono_thread_attach_cb (MONO_NATIVE_THREAD_ID_TO_UINT (tid), staddr + stsize);
1068 /* Can happen when we attach the profiler helper thread in order to heapshot. */
1069 if (!info->tools_thread)
1070 // FIXME: Need a separate callback
1071 mono_profiler_thread_start (MONO_NATIVE_THREAD_ID_TO_UINT (tid));
1073 return current_thread;
1077 mono_thread_detach_internal (MonoInternalThread *thread)
1079 g_return_if_fail (thread != NULL);
1081 THREAD_DEBUG (g_message ("%s: mono_thread_detach for %p (%"G_GSIZE_FORMAT")", __func__, thread, (gsize)thread->tid));
1083 thread_cleanup (thread);
1085 SET_CURRENT_OBJECT (NULL);
1086 mono_domain_unset ();
1088 /* Don't need to close the handle to this thread, even though we took a
1089 * reference in mono_thread_attach (), because the GC will do it
1090 * when the Thread object is finalised.
1095 mono_thread_detach (MonoThread *thread)
1098 mono_thread_detach_internal (thread->internal_thread);
1102 * mono_thread_detach_if_exiting:
1104 * Detach the current thread from the runtime if it is exiting, i.e. it is running pthread dtors.
1105 * This should be used at the end of embedding code which calls into managed code, and which
1106 * can be called from pthread dtors, like dealloc: implementations in objective-c.
1109 mono_thread_detach_if_exiting (void)
1111 if (mono_thread_info_is_exiting ()) {
1112 MonoInternalThread *thread;
1114 thread = mono_thread_internal_current ();
1116 mono_thread_detach_internal (thread);
1117 mono_thread_info_detach ();
1125 mono_thread_exit (void)
1127 MonoInternalThread *thread = mono_thread_internal_current ();
1129 THREAD_DEBUG (g_message ("%s: mono_thread_exit for %p (%"G_GSIZE_FORMAT")", __func__, thread, (gsize)thread->tid));
1131 thread_cleanup (thread);
1132 SET_CURRENT_OBJECT (NULL);
1133 mono_domain_unset ();
1135 /* we could add a callback here for embedders to use. */
1136 if (mono_thread_get_main () && (thread == mono_thread_get_main ()->internal_thread))
1137 exit (mono_environment_exitcode_get ());
1138 mono_thread_info_exit ();
1142 ves_icall_System_Threading_Thread_ConstructInternalThread (MonoThread *this_obj)
1144 MonoInternalThread *internal;
1146 internal = create_internal_thread ();
1148 internal->state = ThreadState_Unstarted;
1150 InterlockedCompareExchangePointer ((volatile gpointer *)&this_obj->internal_thread, internal, NULL);
1154 ves_icall_System_Threading_Thread_Thread_internal (MonoThread *this_obj,
1158 StartInfo *start_info;
1159 MonoInternalThread *internal;
1162 THREAD_DEBUG (g_message("%s: Trying to start a new thread: this (%p) start (%p)", __func__, this_obj, start));
1164 if (!this_obj->internal_thread)
1165 ves_icall_System_Threading_Thread_ConstructInternalThread (this_obj);
1166 internal = this_obj->internal_thread;
1168 LOCK_THREAD (internal);
1170 if ((internal->state & ThreadState_Unstarted) == 0) {
1171 UNLOCK_THREAD (internal);
1172 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has already been started."));
1176 if ((internal->state & ThreadState_Aborted) != 0) {
1177 UNLOCK_THREAD (internal);
1180 /* This is freed in start_wrapper */
1181 start_info = g_new0 (StartInfo, 1);
1182 start_info->func = NULL;
1183 start_info->start_arg = NULL;
1184 start_info->delegate = start;
1185 start_info->obj = this_obj;
1186 g_assert (this_obj->obj.vtable->domain == mono_domain_get ());
1188 res = create_thread (this_obj, internal, start_info, FALSE, 0, &error);
1190 mono_error_cleanup (&error);
1191 UNLOCK_THREAD (internal);
1195 internal->state &= ~ThreadState_Unstarted;
1197 THREAD_DEBUG (g_message ("%s: Started thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread));
1199 UNLOCK_THREAD (internal);
1200 return internal->handle;
1204 * This is called from the finalizer of the internal thread object.
1207 ves_icall_System_Threading_InternalThread_Thread_free_internal (MonoInternalThread *this_obj, HANDLE thread)
1209 THREAD_DEBUG (g_message ("%s: Closing thread %p, handle %p", __func__, this, thread));
1212 * Since threads keep a reference to their thread object while running, by the time this function is called,
1213 * the thread has already exited/detached, i.e. thread_cleanup () has ran. The exception is during shutdown,
1214 * when thread_cleanup () can be called after this.
1217 mono_threads_close_thread_handle (thread);
1219 if (this_obj->synch_cs) {
1220 MonoCoopMutex *synch_cs = this_obj->synch_cs;
1221 this_obj->synch_cs = NULL;
1222 mono_coop_mutex_destroy (synch_cs);
1226 if (this_obj->name) {
1227 void *name = this_obj->name;
1228 this_obj->name = NULL;
1234 ves_icall_System_Threading_Thread_Sleep_internal(gint32 ms)
1237 MonoInternalThread *thread = mono_thread_internal_current ();
1239 THREAD_DEBUG (g_message ("%s: Sleeping for %d ms", __func__, ms));
1241 if (mono_thread_current_check_pending_interrupt ())
1245 gboolean alerted = FALSE;
1247 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1249 res = mono_thread_info_sleep (ms, &alerted);
1251 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1254 MonoException* exc = mono_thread_execute_interruption ();
1256 mono_raise_exception (exc);
1268 void ves_icall_System_Threading_Thread_SpinWait_nop (void)
1273 ves_icall_System_Threading_Thread_GetDomainID (void)
1275 return mono_domain_get()->domain_id;
1279 ves_icall_System_Threading_Thread_Yield (void)
1281 return mono_thread_info_yield ();
1285 * mono_thread_get_name:
1287 * Return the name of the thread. NAME_LEN is set to the length of the name.
1288 * Return NULL if the thread has no name. The returned memory is owned by the
1292 mono_thread_get_name (MonoInternalThread *this_obj, guint32 *name_len)
1296 LOCK_THREAD (this_obj);
1298 if (!this_obj->name) {
1302 *name_len = this_obj->name_len;
1303 res = g_new (gunichar2, this_obj->name_len);
1304 memcpy (res, this_obj->name, sizeof (gunichar2) * this_obj->name_len);
1307 UNLOCK_THREAD (this_obj);
1313 * mono_thread_get_name_utf8:
1315 * Return the name of the thread in UTF-8.
1316 * Return NULL if the thread has no name.
1317 * The returned memory is owned by the caller.
1320 mono_thread_get_name_utf8 (MonoThread *thread)
1325 MonoInternalThread *internal = thread->internal_thread;
1326 if (internal == NULL)
1329 LOCK_THREAD (internal);
1331 char *tname = g_utf16_to_utf8 (internal->name, internal->name_len, NULL, NULL, NULL);
1333 UNLOCK_THREAD (internal);
1339 * mono_thread_get_managed_id:
1341 * Return the Thread.ManagedThreadId value of `thread`.
1342 * Returns -1 if `thread` is NULL.
1345 mono_thread_get_managed_id (MonoThread *thread)
1350 MonoInternalThread *internal = thread->internal_thread;
1351 if (internal == NULL)
1354 int32_t id = internal->managed_id;
1360 ves_icall_System_Threading_Thread_GetName_internal (MonoInternalThread *this_obj)
1365 mono_error_init (&error);
1367 LOCK_THREAD (this_obj);
1369 if (!this_obj->name)
1372 str = mono_string_new_utf16_checked (mono_domain_get (), this_obj->name, this_obj->name_len, &error);
1374 UNLOCK_THREAD (this_obj);
1376 if (mono_error_set_pending_exception (&error))
1383 mono_thread_set_name_internal (MonoInternalThread *this_obj, MonoString *name, gboolean permanent, MonoError *error)
1385 LOCK_THREAD (this_obj);
1387 mono_error_init (error);
1389 if ((this_obj->flags & MONO_THREAD_FLAG_NAME_SET)) {
1390 UNLOCK_THREAD (this_obj);
1392 mono_error_set_invalid_operation (error, "Thread.Name can only be set once.");
1395 if (this_obj->name) {
1396 g_free (this_obj->name);
1397 this_obj->name_len = 0;
1400 this_obj->name = g_new (gunichar2, mono_string_length (name));
1401 memcpy (this_obj->name, mono_string_chars (name), mono_string_length (name) * 2);
1402 this_obj->name_len = mono_string_length (name);
1405 this_obj->flags |= MONO_THREAD_FLAG_NAME_SET;
1408 this_obj->name = NULL;
1411 UNLOCK_THREAD (this_obj);
1413 if (this_obj->name && this_obj->tid) {
1414 char *tname = mono_string_to_utf8_checked (name, error);
1415 return_if_nok (error);
1416 mono_profiler_thread_name (this_obj->tid, tname);
1417 mono_native_thread_set_name (thread_get_tid (this_obj), tname);
1423 ves_icall_System_Threading_Thread_SetName_internal (MonoInternalThread *this_obj, MonoString *name)
1426 mono_thread_set_name_internal (this_obj, name, TRUE, &error);
1427 mono_error_set_pending_exception (&error);
1431 * ves_icall_System_Threading_Thread_GetPriority_internal:
1432 * @param this_obj: The MonoInternalThread on which to operate.
1434 * Gets the priority of the given thread.
1435 * @return: The priority of the given thread.
1438 ves_icall_System_Threading_Thread_GetPriority (MonoThread *this_obj)
1441 MonoInternalThread *internal = this_obj->internal_thread;
1443 LOCK_THREAD (internal);
1444 if (internal->handle != NULL)
1445 priority = mono_thread_info_get_priority ((MonoThreadInfo*) internal->thread_info);
1447 priority = this_obj->priority;
1448 UNLOCK_THREAD (internal);
1453 * ves_icall_System_Threading_Thread_SetPriority_internal:
1454 * @param this_obj: The MonoInternalThread on which to operate.
1455 * @param priority: The priority to set.
1457 * Sets the priority of the given thread.
1460 ves_icall_System_Threading_Thread_SetPriority (MonoThread *this_obj, int priority)
1462 MonoInternalThread *internal = this_obj->internal_thread;
1464 LOCK_THREAD (internal);
1465 this_obj->priority = priority;
1466 if (internal->handle != NULL)
1467 mono_thread_info_set_priority ((MonoThreadInfo*) internal->thread_info, this_obj->priority);
1468 UNLOCK_THREAD (internal);
1471 /* If the array is already in the requested domain, we just return it,
1472 otherwise we return a copy in that domain. */
1474 byte_array_to_domain (MonoArray *arr, MonoDomain *domain, MonoError *error)
1478 mono_error_init (error);
1482 if (mono_object_domain (arr) == domain)
1485 copy = mono_array_new_checked (domain, mono_defaults.byte_class, arr->max_length, error);
1486 memmove (mono_array_addr (copy, guint8, 0), mono_array_addr (arr, guint8, 0), arr->max_length);
1491 ves_icall_System_Threading_Thread_ByteArrayToRootDomain (MonoArray *arr)
1494 MonoArray *result = byte_array_to_domain (arr, mono_get_root_domain (), &error);
1495 mono_error_set_pending_exception (&error);
1500 ves_icall_System_Threading_Thread_ByteArrayToCurrentDomain (MonoArray *arr)
1503 MonoArray *result = byte_array_to_domain (arr, mono_domain_get (), &error);
1504 mono_error_set_pending_exception (&error);
1509 mono_thread_current (void)
1511 MonoDomain *domain = mono_domain_get ();
1512 MonoInternalThread *internal = mono_thread_internal_current ();
1513 MonoThread **current_thread_ptr;
1515 g_assert (internal);
1516 current_thread_ptr = get_current_thread_ptr_for_domain (domain, internal);
1518 if (!*current_thread_ptr) {
1519 g_assert (domain != mono_get_root_domain ());
1520 *current_thread_ptr = new_thread_with_internal (domain, internal);
1522 return *current_thread_ptr;
1525 /* Return the thread object belonging to INTERNAL in the current domain */
1527 mono_thread_current_for_thread (MonoInternalThread *internal)
1529 MonoDomain *domain = mono_domain_get ();
1530 MonoThread **current_thread_ptr;
1532 g_assert (internal);
1533 current_thread_ptr = get_current_thread_ptr_for_domain (domain, internal);
1535 if (!*current_thread_ptr) {
1536 g_assert (domain != mono_get_root_domain ());
1537 *current_thread_ptr = new_thread_with_internal (domain, internal);
1539 return *current_thread_ptr;
1543 mono_thread_internal_current (void)
1545 MonoInternalThread *res = GET_CURRENT_OBJECT ();
1546 THREAD_DEBUG (g_message ("%s: returning %p", __func__, res));
1551 ves_icall_System_Threading_Thread_Join_internal(MonoThread *this_obj, int ms)
1553 MonoInternalThread *thread = this_obj->internal_thread;
1554 HANDLE handle = thread->handle;
1555 MonoInternalThread *cur_thread = mono_thread_internal_current ();
1558 if (mono_thread_current_check_pending_interrupt ())
1561 LOCK_THREAD (thread);
1563 if ((thread->state & ThreadState_Unstarted) != 0) {
1564 UNLOCK_THREAD (thread);
1566 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started."));
1570 UNLOCK_THREAD (thread);
1575 THREAD_DEBUG (g_message ("%s: joining thread handle %p, %d ms", __func__, handle, ms));
1577 mono_thread_set_state (cur_thread, ThreadState_WaitSleepJoin);
1580 ret=WaitForSingleObjectEx (handle, ms, TRUE);
1583 mono_thread_clr_state (cur_thread, ThreadState_WaitSleepJoin);
1585 if(ret==WAIT_OBJECT_0) {
1586 THREAD_DEBUG (g_message ("%s: join successful", __func__));
1591 THREAD_DEBUG (g_message ("%s: join failed", __func__));
1596 #define MANAGED_WAIT_FAILED 0x7fffffff
1599 map_native_wait_result_to_managed (gint32 val)
1601 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1602 return val == WAIT_FAILED ? MANAGED_WAIT_FAILED : val;
1606 mono_wait_uninterrupted (MonoInternalThread *thread, guint32 numhandles, gpointer *handles, gboolean waitall, gint32 ms, MonoError *error)
1614 mono_error_init (error);
1616 start = (ms == -1) ? 0 : mono_100ns_ticks ();
1619 if (numhandles != 1)
1620 ret = WaitForMultipleObjectsEx (numhandles, handles, waitall, wait, TRUE);
1622 ret = WaitForSingleObjectEx (handles [0], ms, TRUE);
1625 if (ret != WAIT_IO_COMPLETION)
1628 exc = mono_thread_execute_interruption ();
1630 mono_error_set_exception_instance (error, exc);
1637 /* Re-calculate ms according to the time passed */
1638 diff_ms = (gint32)((mono_100ns_ticks () - start) / 10000);
1639 if (diff_ms >= ms) {
1643 wait = ms - diff_ms;
1649 gint32 ves_icall_System_Threading_WaitHandle_WaitAll_internal(MonoArray *mono_handles, gint32 ms)
1656 MonoObject *waitHandle;
1657 MonoInternalThread *thread = mono_thread_internal_current ();
1659 /* Do this WaitSleepJoin check before creating objects */
1660 if (mono_thread_current_check_pending_interrupt ())
1661 return map_native_wait_result_to_managed (WAIT_FAILED);
1663 /* We fail in managed if the array has more than 64 elements */
1664 numhandles = (guint32)mono_array_length(mono_handles);
1665 handles = g_new0(HANDLE, numhandles);
1667 for(i = 0; i < numhandles; i++) {
1668 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
1669 handles [i] = mono_wait_handle_get_handle ((MonoWaitHandle *) waitHandle);
1676 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1678 ret = mono_wait_uninterrupted (thread, numhandles, handles, TRUE, ms, &error);
1680 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1684 mono_error_set_pending_exception (&error);
1686 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1687 return map_native_wait_result_to_managed (ret);
1690 gint32 ves_icall_System_Threading_WaitHandle_WaitAny_internal(MonoArray *mono_handles, gint32 ms)
1693 HANDLE handles [MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
1694 uintptr_t numhandles;
1697 MonoObject *waitHandle;
1698 MonoInternalThread *thread = mono_thread_internal_current ();
1700 /* Do this WaitSleepJoin check before creating objects */
1701 if (mono_thread_current_check_pending_interrupt ())
1702 return map_native_wait_result_to_managed (WAIT_FAILED);
1704 numhandles = mono_array_length(mono_handles);
1705 if (numhandles > MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS)
1706 return map_native_wait_result_to_managed (WAIT_FAILED);
1708 for(i = 0; i < numhandles; i++) {
1709 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
1710 handles [i] = mono_wait_handle_get_handle ((MonoWaitHandle *) waitHandle);
1717 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1719 ret = mono_wait_uninterrupted (thread, numhandles, handles, FALSE, ms, &error);
1721 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1723 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") returning %d", __func__, mono_native_thread_id_get (), ret));
1725 mono_error_set_pending_exception (&error);
1727 * These need to be here. See MSDN dos on WaitForMultipleObjects.
1729 if (ret >= WAIT_OBJECT_0 && ret <= WAIT_OBJECT_0 + numhandles - 1) {
1730 return map_native_wait_result_to_managed (ret - WAIT_OBJECT_0);
1732 else if (ret >= WAIT_ABANDONED_0 && ret <= WAIT_ABANDONED_0 + numhandles - 1) {
1733 return map_native_wait_result_to_managed (ret - WAIT_ABANDONED_0);
1736 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1737 return map_native_wait_result_to_managed (ret);
1741 gint32 ves_icall_System_Threading_WaitHandle_WaitOne_internal(HANDLE handle, gint32 ms)
1745 MonoInternalThread *thread = mono_thread_internal_current ();
1747 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") waiting for %p, %d ms", __func__, mono_native_thread_id_get (), handle, ms));
1753 if (mono_thread_current_check_pending_interrupt ())
1754 return map_native_wait_result_to_managed (WAIT_FAILED);
1756 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1758 ret = mono_wait_uninterrupted (thread, 1, &handle, FALSE, ms, &error);
1760 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1762 mono_error_set_pending_exception (&error);
1763 return map_native_wait_result_to_managed (ret);
1767 ves_icall_System_Threading_WaitHandle_SignalAndWait_Internal (HANDLE toSignal, HANDLE toWait, gint32 ms)
1770 MonoInternalThread *thread = mono_thread_internal_current ();
1775 if (mono_thread_current_check_pending_interrupt ())
1776 return map_native_wait_result_to_managed (WAIT_FAILED);
1778 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1781 ret = SignalObjectAndWait (toSignal, toWait, ms, TRUE);
1784 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1786 return map_native_wait_result_to_managed (ret);
1789 HANDLE ves_icall_System_Threading_Mutex_CreateMutex_internal (MonoBoolean owned, MonoString *name, MonoBoolean *created)
1796 mutex = CreateMutex (NULL, owned, NULL);
1798 mutex = CreateMutex (NULL, owned, mono_string_chars (name));
1800 if (GetLastError () == ERROR_ALREADY_EXISTS) {
1808 MonoBoolean ves_icall_System_Threading_Mutex_ReleaseMutex_internal (HANDLE handle ) {
1809 return(ReleaseMutex (handle));
1812 HANDLE ves_icall_System_Threading_Mutex_OpenMutex_internal (MonoString *name,
1818 *error = ERROR_SUCCESS;
1820 ret = OpenMutex (rights, FALSE, mono_string_chars (name));
1822 *error = GetLastError ();
1829 HANDLE ves_icall_System_Threading_Semaphore_CreateSemaphore_internal (gint32 initialCount, gint32 maximumCount, MonoString *name, gint32 *error)
1834 sem = CreateSemaphore (NULL, initialCount, maximumCount, NULL);
1836 sem = CreateSemaphore (NULL, initialCount, maximumCount,
1837 mono_string_chars (name));
1840 *error = GetLastError ();
1845 MonoBoolean ves_icall_System_Threading_Semaphore_ReleaseSemaphore_internal (HANDLE handle, gint32 releaseCount, gint32 *prevcount)
1847 return ReleaseSemaphore (handle, releaseCount, prevcount);
1850 HANDLE ves_icall_System_Threading_Semaphore_OpenSemaphore_internal (MonoString *name, gint32 rights, gint32 *error)
1854 sem = OpenSemaphore (rights, FALSE, mono_string_chars (name));
1856 *error = GetLastError ();
1861 HANDLE ves_icall_System_Threading_Events_CreateEvent_internal (MonoBoolean manual, MonoBoolean initial, MonoString *name, gint32 *error)
1866 event = CreateEvent (NULL, manual, initial, NULL);
1868 event = CreateEvent (NULL, manual, initial,
1869 mono_string_chars (name));
1872 *error = GetLastError ();
1877 gboolean ves_icall_System_Threading_Events_SetEvent_internal (HANDLE handle) {
1878 return (SetEvent(handle));
1881 gboolean ves_icall_System_Threading_Events_ResetEvent_internal (HANDLE handle) {
1882 return (ResetEvent(handle));
1886 ves_icall_System_Threading_Events_CloseEvent_internal (HANDLE handle) {
1887 CloseHandle (handle);
1890 HANDLE ves_icall_System_Threading_Events_OpenEvent_internal (MonoString *name,
1896 ret = OpenEvent (rights, FALSE, mono_string_chars (name));
1898 *error = GetLastError ();
1900 *error = ERROR_SUCCESS;
1906 gint32 ves_icall_System_Threading_Interlocked_Increment_Int (gint32 *location)
1908 return InterlockedIncrement (location);
1911 gint64 ves_icall_System_Threading_Interlocked_Increment_Long (gint64 *location)
1913 #if SIZEOF_VOID_P == 4
1914 if (G_UNLIKELY ((size_t)location & 0x7)) {
1916 mono_interlocked_lock ();
1919 mono_interlocked_unlock ();
1923 return InterlockedIncrement64 (location);
1926 gint32 ves_icall_System_Threading_Interlocked_Decrement_Int (gint32 *location)
1928 return InterlockedDecrement(location);
1931 gint64 ves_icall_System_Threading_Interlocked_Decrement_Long (gint64 * location)
1933 #if SIZEOF_VOID_P == 4
1934 if (G_UNLIKELY ((size_t)location & 0x7)) {
1936 mono_interlocked_lock ();
1939 mono_interlocked_unlock ();
1943 return InterlockedDecrement64 (location);
1946 gint32 ves_icall_System_Threading_Interlocked_Exchange_Int (gint32 *location, gint32 value)
1948 return InterlockedExchange(location, value);
1951 MonoObject * ves_icall_System_Threading_Interlocked_Exchange_Object (MonoObject **location, MonoObject *value)
1954 res = (MonoObject *) InterlockedExchangePointer((gpointer *) location, value);
1955 mono_gc_wbarrier_generic_nostore (location);
1959 gpointer ves_icall_System_Threading_Interlocked_Exchange_IntPtr (gpointer *location, gpointer value)
1961 return InterlockedExchangePointer(location, value);
1964 gfloat ves_icall_System_Threading_Interlocked_Exchange_Single (gfloat *location, gfloat value)
1966 IntFloatUnion val, ret;
1969 ret.ival = InterlockedExchange((gint32 *) location, val.ival);
1975 ves_icall_System_Threading_Interlocked_Exchange_Long (gint64 *location, gint64 value)
1977 #if SIZEOF_VOID_P == 4
1978 if (G_UNLIKELY ((size_t)location & 0x7)) {
1980 mono_interlocked_lock ();
1983 mono_interlocked_unlock ();
1987 return InterlockedExchange64 (location, value);
1991 ves_icall_System_Threading_Interlocked_Exchange_Double (gdouble *location, gdouble value)
1993 LongDoubleUnion val, ret;
1996 ret.ival = (gint64)InterlockedExchange64((gint64 *) location, val.ival);
2001 gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int(gint32 *location, gint32 value, gint32 comparand)
2003 return InterlockedCompareExchange(location, value, comparand);
2006 gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int_Success(gint32 *location, gint32 value, gint32 comparand, MonoBoolean *success)
2008 gint32 r = InterlockedCompareExchange(location, value, comparand);
2009 *success = r == comparand;
2013 MonoObject * ves_icall_System_Threading_Interlocked_CompareExchange_Object (MonoObject **location, MonoObject *value, MonoObject *comparand)
2016 res = (MonoObject *) InterlockedCompareExchangePointer((gpointer *) location, value, comparand);
2017 mono_gc_wbarrier_generic_nostore (location);
2021 gpointer ves_icall_System_Threading_Interlocked_CompareExchange_IntPtr(gpointer *location, gpointer value, gpointer comparand)
2023 return InterlockedCompareExchangePointer(location, value, comparand);
2026 gfloat ves_icall_System_Threading_Interlocked_CompareExchange_Single (gfloat *location, gfloat value, gfloat comparand)
2028 IntFloatUnion val, ret, cmp;
2031 cmp.fval = comparand;
2032 ret.ival = InterlockedCompareExchange((gint32 *) location, val.ival, cmp.ival);
2038 ves_icall_System_Threading_Interlocked_CompareExchange_Double (gdouble *location, gdouble value, gdouble comparand)
2040 #if SIZEOF_VOID_P == 8
2041 LongDoubleUnion val, comp, ret;
2044 comp.fval = comparand;
2045 ret.ival = (gint64)InterlockedCompareExchangePointer((gpointer *) location, (gpointer)val.ival, (gpointer)comp.ival);
2051 mono_interlocked_lock ();
2053 if (old == comparand)
2055 mono_interlocked_unlock ();
2062 ves_icall_System_Threading_Interlocked_CompareExchange_Long (gint64 *location, gint64 value, gint64 comparand)
2064 #if SIZEOF_VOID_P == 4
2065 if (G_UNLIKELY ((size_t)location & 0x7)) {
2067 mono_interlocked_lock ();
2069 if (old == comparand)
2071 mono_interlocked_unlock ();
2075 return InterlockedCompareExchange64 (location, value, comparand);
2079 ves_icall_System_Threading_Interlocked_CompareExchange_T (MonoObject **location, MonoObject *value, MonoObject *comparand)
2082 res = (MonoObject *)InterlockedCompareExchangePointer ((volatile gpointer *)location, value, comparand);
2083 mono_gc_wbarrier_generic_nostore (location);
2088 ves_icall_System_Threading_Interlocked_Exchange_T (MonoObject **location, MonoObject *value)
2091 MONO_CHECK_NULL (location, NULL);
2092 res = (MonoObject *)InterlockedExchangePointer ((volatile gpointer *)location, value);
2093 mono_gc_wbarrier_generic_nostore (location);
2098 ves_icall_System_Threading_Interlocked_Add_Int (gint32 *location, gint32 value)
2100 return InterlockedAdd (location, value);
2104 ves_icall_System_Threading_Interlocked_Add_Long (gint64 *location, gint64 value)
2106 #if SIZEOF_VOID_P == 4
2107 if (G_UNLIKELY ((size_t)location & 0x7)) {
2109 mono_interlocked_lock ();
2112 mono_interlocked_unlock ();
2116 return InterlockedAdd64 (location, value);
2120 ves_icall_System_Threading_Interlocked_Read_Long (gint64 *location)
2122 #if SIZEOF_VOID_P == 4
2123 if (G_UNLIKELY ((size_t)location & 0x7)) {
2125 mono_interlocked_lock ();
2127 mono_interlocked_unlock ();
2131 return InterlockedRead64 (location);
2135 ves_icall_System_Threading_Thread_MemoryBarrier (void)
2137 mono_memory_barrier ();
2141 ves_icall_System_Threading_Thread_ClrState (MonoInternalThread* this_obj, guint32 state)
2143 mono_thread_clr_state (this_obj, (MonoThreadState)state);
2145 if (state & ThreadState_Background) {
2146 /* If the thread changes the background mode, the main thread has to
2147 * be notified, since it has to rebuild the list of threads to
2150 SetEvent (background_change_event);
2155 ves_icall_System_Threading_Thread_SetState (MonoInternalThread* this_obj, guint32 state)
2157 mono_thread_set_state (this_obj, (MonoThreadState)state);
2159 if (state & ThreadState_Background) {
2160 /* If the thread changes the background mode, the main thread has to
2161 * be notified, since it has to rebuild the list of threads to
2164 SetEvent (background_change_event);
2169 ves_icall_System_Threading_Thread_GetState (MonoInternalThread* this_obj)
2173 LOCK_THREAD (this_obj);
2175 state = this_obj->state;
2177 UNLOCK_THREAD (this_obj);
2182 void ves_icall_System_Threading_Thread_Interrupt_internal (MonoThread *this_obj)
2184 MonoInternalThread *current;
2186 MonoInternalThread *thread = this_obj->internal_thread;
2188 LOCK_THREAD (thread);
2190 current = mono_thread_internal_current ();
2192 thread->thread_interrupt_requested = TRUE;
2193 throw_ = current != thread && (thread->state & ThreadState_WaitSleepJoin);
2195 UNLOCK_THREAD (thread);
2198 async_abort_internal (thread, FALSE);
2203 * mono_thread_current_check_pending_interrupt:
2205 * Checks if there's a interruption request and set the pending exception if so.
2207 * @returns true if a pending exception was set
2210 mono_thread_current_check_pending_interrupt (void)
2212 MonoInternalThread *thread = mono_thread_internal_current ();
2213 gboolean throw_ = FALSE;
2215 LOCK_THREAD (thread);
2217 if (thread->thread_interrupt_requested) {
2219 thread->thread_interrupt_requested = FALSE;
2222 UNLOCK_THREAD (thread);
2225 mono_set_pending_exception (mono_get_exception_thread_interrupted ());
2230 request_thread_abort (MonoInternalThread *thread, MonoObject *state)
2232 LOCK_THREAD (thread);
2234 if ((thread->state & ThreadState_AbortRequested) != 0 ||
2235 (thread->state & ThreadState_StopRequested) != 0 ||
2236 (thread->state & ThreadState_Stopped) != 0)
2238 UNLOCK_THREAD (thread);
2242 if ((thread->state & ThreadState_Unstarted) != 0) {
2243 thread->state |= ThreadState_Aborted;
2244 UNLOCK_THREAD (thread);
2248 thread->state |= ThreadState_AbortRequested;
2249 if (thread->abort_state_handle)
2250 mono_gchandle_free (thread->abort_state_handle);
2252 thread->abort_state_handle = mono_gchandle_new (state, FALSE);
2253 g_assert (thread->abort_state_handle);
2255 thread->abort_state_handle = 0;
2257 thread->abort_exc = NULL;
2259 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));
2261 /* During shutdown, we can't wait for other threads */
2263 /* Make sure the thread is awake */
2264 mono_thread_resume (thread);
2266 UNLOCK_THREAD (thread);
2271 ves_icall_System_Threading_Thread_Abort (MonoInternalThread *thread, MonoObject *state)
2273 if (!request_thread_abort (thread, state))
2276 if (thread == mono_thread_internal_current ()) {
2278 self_abort_internal (&error);
2279 mono_error_set_pending_exception (&error);
2281 async_abort_internal (thread, TRUE);
2286 * mono_thread_internal_abort:
2288 * Request thread @thread to be aborted.
2290 * @thread MUST NOT be the current thread.
2293 mono_thread_internal_abort (MonoInternalThread *thread)
2295 g_assert (thread != mono_thread_internal_current ());
2297 if (!request_thread_abort (thread, NULL))
2299 async_abort_internal (thread, TRUE);
2303 ves_icall_System_Threading_Thread_ResetAbort (MonoThread *this_obj)
2305 MonoInternalThread *thread = mono_thread_internal_current ();
2306 gboolean was_aborting;
2308 LOCK_THREAD (thread);
2309 was_aborting = thread->state & ThreadState_AbortRequested;
2310 thread->state &= ~ThreadState_AbortRequested;
2311 UNLOCK_THREAD (thread);
2313 if (!was_aborting) {
2314 const char *msg = "Unable to reset abort because no abort was requested";
2315 mono_set_pending_exception (mono_get_exception_thread_state (msg));
2318 thread->abort_exc = NULL;
2319 if (thread->abort_state_handle) {
2320 mono_gchandle_free (thread->abort_state_handle);
2321 /* This is actually not necessary - the handle
2322 only counts if the exception is set */
2323 thread->abort_state_handle = 0;
2328 mono_thread_internal_reset_abort (MonoInternalThread *thread)
2330 LOCK_THREAD (thread);
2332 thread->state &= ~ThreadState_AbortRequested;
2334 if (thread->abort_exc) {
2335 thread->abort_exc = NULL;
2336 if (thread->abort_state_handle) {
2337 mono_gchandle_free (thread->abort_state_handle);
2338 /* This is actually not necessary - the handle
2339 only counts if the exception is set */
2340 thread->abort_state_handle = 0;
2344 UNLOCK_THREAD (thread);
2348 ves_icall_System_Threading_Thread_GetAbortExceptionState (MonoThread *this_obj)
2351 MonoInternalThread *thread = this_obj->internal_thread;
2352 MonoObject *state, *deserialized = NULL;
2355 if (!thread->abort_state_handle)
2358 state = mono_gchandle_get_target (thread->abort_state_handle);
2361 domain = mono_domain_get ();
2362 if (mono_object_domain (state) == domain)
2365 deserialized = mono_object_xdomain_representation (state, domain, &error);
2367 if (!deserialized) {
2368 MonoException *invalid_op_exc = mono_get_exception_invalid_operation ("Thread.ExceptionState cannot access an ExceptionState from a different AppDomain");
2369 if (!is_ok (&error)) {
2370 MonoObject *exc = (MonoObject*)mono_error_convert_to_exception (&error);
2371 MONO_OBJECT_SETREF (invalid_op_exc, inner_ex, exc);
2373 mono_set_pending_exception (invalid_op_exc);
2377 return deserialized;
2381 mono_thread_suspend (MonoInternalThread *thread)
2383 LOCK_THREAD (thread);
2385 if ((thread->state & ThreadState_Unstarted) != 0 ||
2386 (thread->state & ThreadState_Aborted) != 0 ||
2387 (thread->state & ThreadState_Stopped) != 0)
2389 UNLOCK_THREAD (thread);
2393 if ((thread->state & ThreadState_Suspended) != 0 ||
2394 (thread->state & ThreadState_SuspendRequested) != 0 ||
2395 (thread->state & ThreadState_StopRequested) != 0)
2397 UNLOCK_THREAD (thread);
2401 thread->state |= ThreadState_SuspendRequested;
2403 if (thread == mono_thread_internal_current ()) {
2404 /* calls UNLOCK_THREAD (thread) */
2405 self_suspend_internal ();
2407 /* calls UNLOCK_THREAD (thread) */
2408 async_suspend_internal (thread, FALSE);
2415 ves_icall_System_Threading_Thread_Suspend (MonoThread *this_obj)
2417 if (!mono_thread_suspend (this_obj->internal_thread)) {
2418 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2423 /* LOCKING: LOCK_THREAD(thread) must be held */
2425 mono_thread_resume (MonoInternalThread *thread)
2427 if ((thread->state & ThreadState_SuspendRequested) != 0) {
2428 thread->state &= ~ThreadState_SuspendRequested;
2432 if ((thread->state & ThreadState_Suspended) == 0 ||
2433 (thread->state & ThreadState_Unstarted) != 0 ||
2434 (thread->state & ThreadState_Aborted) != 0 ||
2435 (thread->state & ThreadState_Stopped) != 0)
2440 UNLOCK_THREAD (thread);
2442 /* Awake the thread */
2443 if (!mono_thread_info_resume (thread_get_tid (thread)))
2446 LOCK_THREAD (thread);
2448 thread->state &= ~ThreadState_Suspended;
2454 ves_icall_System_Threading_Thread_Resume (MonoThread *thread)
2456 if (!thread->internal_thread) {
2457 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2459 LOCK_THREAD (thread->internal_thread);
2460 if (!mono_thread_resume (thread->internal_thread))
2461 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2462 UNLOCK_THREAD (thread->internal_thread);
2467 mono_threads_is_critical_method (MonoMethod *method)
2469 switch (method->wrapper_type) {
2470 case MONO_WRAPPER_RUNTIME_INVOKE:
2471 case MONO_WRAPPER_XDOMAIN_INVOKE:
2472 case MONO_WRAPPER_XDOMAIN_DISPATCH:
2479 find_wrapper (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
2484 if (mono_threads_is_critical_method (m)) {
2485 *((gboolean*)data) = TRUE;
2492 is_running_protected_wrapper (void)
2494 gboolean found = FALSE;
2495 mono_stack_walk (find_wrapper, &found);
2500 request_thread_stop (MonoInternalThread *thread)
2502 LOCK_THREAD (thread);
2504 if ((thread->state & ThreadState_StopRequested) != 0 ||
2505 (thread->state & ThreadState_Stopped) != 0)
2507 UNLOCK_THREAD (thread);
2511 /* Make sure the thread is awake */
2512 mono_thread_resume (thread);
2514 thread->state |= ThreadState_StopRequested;
2515 thread->state &= ~ThreadState_AbortRequested;
2517 UNLOCK_THREAD (thread);
2522 * mono_thread_internal_stop:
2524 * Request thread @thread to stop.
2526 * @thread MUST NOT be the current thread.
2529 mono_thread_internal_stop (MonoInternalThread *thread)
2531 g_assert (thread != mono_thread_internal_current ());
2533 if (!request_thread_stop (thread))
2536 async_abort_internal (thread, TRUE);
2539 void mono_thread_stop (MonoThread *thread)
2541 MonoInternalThread *internal = thread->internal_thread;
2543 if (!request_thread_stop (internal))
2546 if (internal == mono_thread_internal_current ()) {
2548 self_abort_internal (&error);
2550 This function is part of the embeding API and has no way to return the exception
2551 to be thrown. So what we do is keep the old behavior and raise the exception.
2553 mono_error_raise_exception (&error); /* OK to throw, see note */
2555 async_abort_internal (internal, TRUE);
2560 ves_icall_System_Threading_Thread_VolatileRead1 (void *ptr)
2562 gint8 tmp = *(volatile gint8 *)ptr;
2563 mono_memory_barrier ();
2568 ves_icall_System_Threading_Thread_VolatileRead2 (void *ptr)
2570 gint16 tmp = *(volatile gint16 *)ptr;
2571 mono_memory_barrier ();
2576 ves_icall_System_Threading_Thread_VolatileRead4 (void *ptr)
2578 gint32 tmp = *(volatile gint32 *)ptr;
2579 mono_memory_barrier ();
2584 ves_icall_System_Threading_Thread_VolatileRead8 (void *ptr)
2586 gint64 tmp = *(volatile gint64 *)ptr;
2587 mono_memory_barrier ();
2592 ves_icall_System_Threading_Thread_VolatileReadIntPtr (void *ptr)
2594 volatile void *tmp = *(volatile void **)ptr;
2595 mono_memory_barrier ();
2596 return (void *) tmp;
2600 ves_icall_System_Threading_Thread_VolatileReadObject (void *ptr)
2602 volatile MonoObject *tmp = *(volatile MonoObject **)ptr;
2603 mono_memory_barrier ();
2604 return (MonoObject *) tmp;
2608 ves_icall_System_Threading_Thread_VolatileReadDouble (void *ptr)
2610 double tmp = *(volatile double *)ptr;
2611 mono_memory_barrier ();
2616 ves_icall_System_Threading_Thread_VolatileReadFloat (void *ptr)
2618 float tmp = *(volatile float *)ptr;
2619 mono_memory_barrier ();
2624 ves_icall_System_Threading_Volatile_Read1 (void *ptr)
2626 return InterlockedRead8 ((volatile gint8 *)ptr);
2630 ves_icall_System_Threading_Volatile_Read2 (void *ptr)
2632 return InterlockedRead16 ((volatile gint16 *)ptr);
2636 ves_icall_System_Threading_Volatile_Read4 (void *ptr)
2638 return InterlockedRead ((volatile gint32 *)ptr);
2642 ves_icall_System_Threading_Volatile_Read8 (void *ptr)
2644 #if SIZEOF_VOID_P == 4
2645 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2647 mono_interlocked_lock ();
2648 val = *(gint64*)ptr;
2649 mono_interlocked_unlock ();
2653 return InterlockedRead64 ((volatile gint64 *)ptr);
2657 ves_icall_System_Threading_Volatile_ReadIntPtr (void *ptr)
2659 return InterlockedReadPointer ((volatile gpointer *)ptr);
2663 ves_icall_System_Threading_Volatile_ReadDouble (void *ptr)
2667 #if SIZEOF_VOID_P == 4
2668 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2670 mono_interlocked_lock ();
2671 val = *(double*)ptr;
2672 mono_interlocked_unlock ();
2677 u.ival = InterlockedRead64 ((volatile gint64 *)ptr);
2683 ves_icall_System_Threading_Volatile_ReadFloat (void *ptr)
2687 u.ival = InterlockedRead ((volatile gint32 *)ptr);
2693 ves_icall_System_Threading_Volatile_Read_T (void *ptr)
2695 return (MonoObject *)InterlockedReadPointer ((volatile gpointer *)ptr);
2699 ves_icall_System_Threading_Thread_VolatileWrite1 (void *ptr, gint8 value)
2701 mono_memory_barrier ();
2702 *(volatile gint8 *)ptr = value;
2706 ves_icall_System_Threading_Thread_VolatileWrite2 (void *ptr, gint16 value)
2708 mono_memory_barrier ();
2709 *(volatile gint16 *)ptr = value;
2713 ves_icall_System_Threading_Thread_VolatileWrite4 (void *ptr, gint32 value)
2715 mono_memory_barrier ();
2716 *(volatile gint32 *)ptr = value;
2720 ves_icall_System_Threading_Thread_VolatileWrite8 (void *ptr, gint64 value)
2722 mono_memory_barrier ();
2723 *(volatile gint64 *)ptr = value;
2727 ves_icall_System_Threading_Thread_VolatileWriteIntPtr (void *ptr, void *value)
2729 mono_memory_barrier ();
2730 *(volatile void **)ptr = value;
2734 ves_icall_System_Threading_Thread_VolatileWriteObject (void *ptr, MonoObject *value)
2736 mono_memory_barrier ();
2737 mono_gc_wbarrier_generic_store (ptr, value);
2741 ves_icall_System_Threading_Thread_VolatileWriteDouble (void *ptr, double value)
2743 mono_memory_barrier ();
2744 *(volatile double *)ptr = value;
2748 ves_icall_System_Threading_Thread_VolatileWriteFloat (void *ptr, float value)
2750 mono_memory_barrier ();
2751 *(volatile float *)ptr = value;
2755 ves_icall_System_Threading_Volatile_Write1 (void *ptr, gint8 value)
2757 InterlockedWrite8 ((volatile gint8 *)ptr, value);
2761 ves_icall_System_Threading_Volatile_Write2 (void *ptr, gint16 value)
2763 InterlockedWrite16 ((volatile gint16 *)ptr, value);
2767 ves_icall_System_Threading_Volatile_Write4 (void *ptr, gint32 value)
2769 InterlockedWrite ((volatile gint32 *)ptr, value);
2773 ves_icall_System_Threading_Volatile_Write8 (void *ptr, gint64 value)
2775 #if SIZEOF_VOID_P == 4
2776 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2777 mono_interlocked_lock ();
2778 *(gint64*)ptr = value;
2779 mono_interlocked_unlock ();
2784 InterlockedWrite64 ((volatile gint64 *)ptr, value);
2788 ves_icall_System_Threading_Volatile_WriteIntPtr (void *ptr, void *value)
2790 InterlockedWritePointer ((volatile gpointer *)ptr, value);
2794 ves_icall_System_Threading_Volatile_WriteDouble (void *ptr, double value)
2798 #if SIZEOF_VOID_P == 4
2799 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2800 mono_interlocked_lock ();
2801 *(double*)ptr = value;
2802 mono_interlocked_unlock ();
2809 InterlockedWrite64 ((volatile gint64 *)ptr, u.ival);
2813 ves_icall_System_Threading_Volatile_WriteFloat (void *ptr, float value)
2819 InterlockedWrite ((volatile gint32 *)ptr, u.ival);
2823 ves_icall_System_Threading_Volatile_Write_T (void *ptr, MonoObject *value)
2825 mono_gc_wbarrier_generic_store_atomic (ptr, value);
2829 free_context (void *user_data)
2831 ContextStaticData *data = user_data;
2833 mono_threads_lock ();
2836 * There is no guarantee that, by the point this reference queue callback
2837 * has been invoked, the GC handle associated with the object will fail to
2838 * resolve as one might expect. So if we don't free and remove the GC
2839 * handle here, free_context_static_data_helper () could end up resolving
2840 * a GC handle to an actually-dead context which would contain a pointer
2841 * to an already-freed static data segment, resulting in a crash when
2844 g_hash_table_remove (contexts, GUINT_TO_POINTER (data->gc_handle));
2846 mono_threads_unlock ();
2848 mono_gchandle_free (data->gc_handle);
2849 mono_free_static_data (data->static_data);
2854 ves_icall_System_Runtime_Remoting_Contexts_Context_RegisterContext (MonoAppContext *ctx)
2856 mono_threads_lock ();
2858 //g_print ("Registering context %d in domain %d\n", ctx->context_id, ctx->domain_id);
2861 contexts = g_hash_table_new (NULL, NULL);
2864 context_queue = mono_gc_reference_queue_new (free_context);
2866 gpointer gch = GUINT_TO_POINTER (mono_gchandle_new_weakref (&ctx->obj, FALSE));
2867 g_hash_table_insert (contexts, gch, gch);
2870 * We use this intermediate structure to contain a duplicate pointer to
2871 * the static data because we can't rely on being able to resolve the GC
2872 * handle in the reference queue callback.
2874 ContextStaticData *data = g_new0 (ContextStaticData, 1);
2875 data->gc_handle = GPOINTER_TO_UINT (gch);
2878 context_adjust_static_data (ctx);
2879 mono_gc_reference_queue_add (context_queue, &ctx->obj, data);
2881 mono_threads_unlock ();
2883 mono_profiler_context_loaded (ctx);
2887 ves_icall_System_Runtime_Remoting_Contexts_Context_ReleaseContext (MonoAppContext *ctx)
2890 * NOTE: Since finalizers are unreliable for the purposes of ensuring
2891 * cleanup in exceptional circumstances, we don't actually do any
2892 * cleanup work here. We instead do this via a reference queue.
2895 //g_print ("Releasing context %d in domain %d\n", ctx->context_id, ctx->domain_id);
2897 mono_profiler_context_unloaded (ctx);
2901 mono_thread_init_tls (void)
2903 MONO_FAST_TLS_INIT (tls_current_object);
2904 mono_native_tls_alloc (¤t_object_key, NULL);
2907 void mono_thread_init (MonoThreadStartCB start_cb,
2908 MonoThreadAttachCB attach_cb)
2910 mono_coop_mutex_init_recursive (&threads_mutex);
2912 mono_os_mutex_init_recursive(&interlocked_mutex);
2913 mono_os_mutex_init_recursive(&joinable_threads_mutex);
2915 background_change_event = CreateEvent (NULL, TRUE, FALSE, NULL);
2916 g_assert(background_change_event != NULL);
2918 mono_init_static_data_info (&thread_static_info);
2919 mono_init_static_data_info (&context_static_info);
2921 THREAD_DEBUG (g_message ("%s: Allocated current_object_key %d", __func__, current_object_key));
2923 mono_thread_start_cb = start_cb;
2924 mono_thread_attach_cb = attach_cb;
2926 /* Get a pseudo handle to the current process. This is just a
2927 * kludge so that wapi can build a process handle if needed.
2928 * As a pseudo handle is returned, we don't need to clean
2931 GetCurrentProcess ();
2934 void mono_thread_cleanup (void)
2936 #if !defined(RUN_IN_SUBTHREAD)
2937 /* The main thread must abandon any held mutexes (particularly
2938 * important for named mutexes as they are shared across
2939 * processes, see bug 74680.) This will happen when the
2940 * thread exits, but if it's not running in a subthread it
2941 * won't exit in time.
2943 mono_thread_info_set_exited (mono_thread_info_current ());
2947 /* This stuff needs more testing, it seems one of these
2948 * critical sections can be locked when mono_thread_cleanup is
2951 mono_coop_mutex_destroy (&threads_mutex);
2952 mono_os_mutex_destroy (&interlocked_mutex);
2953 mono_os_mutex_destroy (&delayed_free_table_mutex);
2954 mono_os_mutex_destroy (&small_id_mutex);
2955 CloseHandle (background_change_event);
2958 mono_native_tls_free (current_object_key);
2962 mono_threads_install_cleanup (MonoThreadCleanupFunc func)
2964 mono_thread_cleanup_fn = func;
2968 mono_thread_set_manage_callback (MonoThread *thread, MonoThreadManageCallback func)
2970 thread->internal_thread->manage_callback = func;
2974 static void print_tids (gpointer key, gpointer value, gpointer user)
2976 /* GPOINTER_TO_UINT breaks horribly if sizeof(void *) >
2977 * sizeof(uint) and a cast to uint would overflow
2979 /* Older versions of glib don't have G_GSIZE_FORMAT, so just
2980 * print this as a pointer.
2982 g_message ("Waiting for: %p", key);
2987 HANDLE handles[MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
2988 MonoInternalThread *threads[MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
2993 wait_for_tids (struct wait_data *wait, guint32 timeout)
2997 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
3000 ret=WaitForMultipleObjectsEx(wait->num, wait->handles, TRUE, timeout, TRUE);
3003 if(ret==WAIT_FAILED) {
3004 /* See the comment in build_wait_tids() */
3005 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
3009 for(i=0; i<wait->num; i++)
3010 mono_threads_close_thread_handle (wait->handles [i]);
3012 if (ret == WAIT_TIMEOUT)
3015 for(i=0; i<wait->num; i++) {
3016 gsize tid = wait->threads[i]->tid;
3019 * On !win32, when the thread handle becomes signalled, it just means the thread has exited user code,
3020 * it can still run io-layer etc. code. So wait for it to really exit.
3021 * FIXME: This won't join threads which are not in the joinable_hash yet.
3023 mono_thread_join ((gpointer)tid);
3025 mono_threads_lock ();
3026 if(mono_g_hash_table_lookup (threads, (gpointer)tid)!=NULL) {
3027 /* This thread must have been killed, because
3028 * it hasn't cleaned itself up. (It's just
3029 * possible that the thread exited before the
3030 * parent thread had a chance to store the
3031 * handle, and now there is another pointer to
3032 * the already-exited thread stored. In this
3033 * case, we'll just get two
3034 * mono_profiler_thread_end() calls for the
3038 mono_threads_unlock ();
3039 THREAD_DEBUG (g_message ("%s: cleaning up after thread %p (%"G_GSIZE_FORMAT")", __func__, wait->threads[i], tid));
3040 thread_cleanup (wait->threads[i]);
3042 mono_threads_unlock ();
3047 static void wait_for_tids_or_state_change (struct wait_data *wait, guint32 timeout)
3049 guint32 i, ret, count;
3051 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
3053 /* Add the thread state change event, so it wakes up if a thread changes
3054 * to background mode.
3057 if (count < MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS) {
3058 wait->handles [count] = background_change_event;
3063 ret=WaitForMultipleObjectsEx (count, wait->handles, FALSE, timeout, TRUE);
3066 if(ret==WAIT_FAILED) {
3067 /* See the comment in build_wait_tids() */
3068 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
3072 for(i=0; i<wait->num; i++)
3073 mono_threads_close_thread_handle (wait->handles [i]);
3075 if (ret == WAIT_TIMEOUT)
3078 if (ret < wait->num) {
3079 gsize tid = wait->threads[ret]->tid;
3080 mono_threads_lock ();
3081 if (mono_g_hash_table_lookup (threads, (gpointer)tid)!=NULL) {
3082 /* See comment in wait_for_tids about thread cleanup */
3083 mono_threads_unlock ();
3084 THREAD_DEBUG (g_message ("%s: cleaning up after thread %"G_GSIZE_FORMAT, __func__, tid));
3085 thread_cleanup (wait->threads [ret]);
3087 mono_threads_unlock ();
3091 static void build_wait_tids (gpointer key, gpointer value, gpointer user)
3093 struct wait_data *wait=(struct wait_data *)user;
3095 if(wait->num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS) {
3097 MonoInternalThread *thread=(MonoInternalThread *)value;
3099 /* Ignore background threads, we abort them later */
3100 /* Do not lock here since it is not needed and the caller holds threads_lock */
3101 if (thread->state & ThreadState_Background) {
3102 THREAD_DEBUG (g_message ("%s: ignoring background thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3103 return; /* just leave, ignore */
3106 if (mono_gc_is_finalizer_internal_thread (thread)) {
3107 THREAD_DEBUG (g_message ("%s: ignoring finalizer thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3111 if (thread == mono_thread_internal_current ()) {
3112 THREAD_DEBUG (g_message ("%s: ignoring current thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3116 if (mono_thread_get_main () && (thread == mono_thread_get_main ()->internal_thread)) {
3117 THREAD_DEBUG (g_message ("%s: ignoring main thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3121 if (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE) {
3122 THREAD_DEBUG (g_message ("%s: ignoring thread %" G_GSIZE_FORMAT "with DONT_MANAGE flag set.", __func__, (gsize)thread->tid));
3126 handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3127 if (handle == NULL) {
3128 THREAD_DEBUG (g_message ("%s: ignoring unopenable thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3132 THREAD_DEBUG (g_message ("%s: Invoking mono_thread_manage callback on thread %p", __func__, thread));
3133 if ((thread->manage_callback == NULL) || (thread->manage_callback (thread->root_domain_thread) == TRUE)) {
3134 wait->handles[wait->num]=handle;
3135 wait->threads[wait->num]=thread;
3138 THREAD_DEBUG (g_message ("%s: adding thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3140 THREAD_DEBUG (g_message ("%s: ignoring (because of callback) thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3145 /* Just ignore the rest, we can't do anything with
3152 remove_and_abort_threads (gpointer key, gpointer value, gpointer user)
3154 struct wait_data *wait=(struct wait_data *)user;
3155 MonoNativeThreadId self = mono_native_thread_id_get ();
3156 MonoInternalThread *thread = (MonoInternalThread *)value;
3159 if (wait->num >= MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS)
3162 /* The finalizer thread is not a background thread */
3163 if (!mono_native_thread_id_equals (thread_get_tid (thread), self)
3164 && (thread->state & ThreadState_Background) != 0
3165 && (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE) == 0
3167 handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3171 wait->handles[wait->num] = handle;
3172 wait->threads[wait->num] = thread;
3175 THREAD_DEBUG (g_print ("%s: Aborting id: %"G_GSIZE_FORMAT"\n", __func__, (gsize)thread->tid));
3176 mono_thread_internal_abort (thread);
3180 return !mono_native_thread_id_equals (thread_get_tid (thread), self)
3181 && !mono_gc_is_finalizer_internal_thread (thread);
3185 * mono_threads_set_shutting_down:
3187 * Is called by a thread that wants to shut down Mono. If the runtime is already
3188 * shutting down, the calling thread is suspended/stopped, and this function never
3192 mono_threads_set_shutting_down (void)
3194 MonoInternalThread *current_thread = mono_thread_internal_current ();
3196 mono_threads_lock ();
3198 if (shutting_down) {
3199 mono_threads_unlock ();
3201 /* Make sure we're properly suspended/stopped */
3203 LOCK_THREAD (current_thread);
3205 if ((current_thread->state & ThreadState_SuspendRequested) ||
3206 (current_thread->state & ThreadState_AbortRequested) ||
3207 (current_thread->state & ThreadState_StopRequested)) {
3208 UNLOCK_THREAD (current_thread);
3209 mono_thread_execute_interruption ();
3211 current_thread->state |= ThreadState_Stopped;
3212 UNLOCK_THREAD (current_thread);
3215 /*since we're killing the thread, unset the current domain.*/
3216 mono_domain_unset ();
3218 /* Wake up other threads potentially waiting for us */
3219 mono_thread_info_exit ();
3221 shutting_down = TRUE;
3223 /* Not really a background state change, but this will
3224 * interrupt the main thread if it is waiting for all
3225 * the other threads.
3227 SetEvent (background_change_event);
3229 mono_threads_unlock ();
3233 void mono_thread_manage (void)
3235 struct wait_data wait_data;
3236 struct wait_data *wait = &wait_data;
3238 memset (wait, 0, sizeof (struct wait_data));
3239 /* join each thread that's still running */
3240 THREAD_DEBUG (g_message ("%s: Joining each running thread...", __func__));
3242 mono_threads_lock ();
3244 THREAD_DEBUG (g_message("%s: No threads", __func__));
3245 mono_threads_unlock ();
3248 mono_threads_unlock ();
3251 mono_threads_lock ();
3252 if (shutting_down) {
3253 /* somebody else is shutting down */
3254 mono_threads_unlock ();
3257 THREAD_DEBUG (g_message ("%s: There are %d threads to join", __func__, mono_g_hash_table_size (threads));
3258 mono_g_hash_table_foreach (threads, print_tids, NULL));
3260 ResetEvent (background_change_event);
3262 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3263 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3264 mono_g_hash_table_foreach (threads, build_wait_tids, wait);
3265 mono_threads_unlock ();
3267 /* Something to wait for */
3268 wait_for_tids_or_state_change (wait, INFINITE);
3270 THREAD_DEBUG (g_message ("%s: I have %d threads after waiting.", __func__, wait->num));
3271 } while(wait->num>0);
3273 /* Mono is shutting down, so just wait for the end */
3274 if (!mono_runtime_try_shutdown ()) {
3275 /*FIXME mono_thread_suspend probably should call mono_thread_execute_interruption when self interrupting. */
3276 mono_thread_suspend (mono_thread_internal_current ());
3277 mono_thread_execute_interruption ();
3281 * Remove everything but the finalizer thread and self.
3282 * Also abort all the background threads
3285 mono_threads_lock ();
3288 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3289 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3290 mono_g_hash_table_foreach_remove (threads, remove_and_abort_threads, wait);
3292 mono_threads_unlock ();
3294 THREAD_DEBUG (g_message ("%s: wait->num is now %d", __func__, wait->num));
3296 /* Something to wait for */
3297 wait_for_tids (wait, INFINITE);
3299 } while (wait->num > 0);
3302 * give the subthreads a chance to really quit (this is mainly needed
3303 * to get correct user and system times from getrusage/wait/time(1)).
3304 * This could be removed if we avoid pthread_detach() and use pthread_join().
3306 mono_thread_info_yield ();
3310 collect_threads_for_suspend (gpointer key, gpointer value, gpointer user_data)
3312 MonoInternalThread *thread = (MonoInternalThread*)value;
3313 struct wait_data *wait = (struct wait_data*)user_data;
3317 * We try to exclude threads early, to avoid running into the MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS
3319 * This needs no locking.
3321 if ((thread->state & ThreadState_Suspended) != 0 ||
3322 (thread->state & ThreadState_Stopped) != 0)
3325 if (wait->num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS) {
3326 handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3330 wait->handles [wait->num] = handle;
3331 wait->threads [wait->num] = thread;
3337 * mono_thread_suspend_all_other_threads:
3339 * Suspend all managed threads except the finalizer thread and this thread. It is
3340 * not possible to resume them later.
3342 void mono_thread_suspend_all_other_threads (void)
3344 struct wait_data wait_data;
3345 struct wait_data *wait = &wait_data;
3347 MonoNativeThreadId self = mono_native_thread_id_get ();
3348 guint32 eventidx = 0;
3349 gboolean starting, finished;
3351 memset (wait, 0, sizeof (struct wait_data));
3353 * The other threads could be in an arbitrary state at this point, i.e.
3354 * they could be starting up, shutting down etc. This means that there could be
3355 * threads which are not even in the threads hash table yet.
3359 * First we set a barrier which will be checked by all threads before they
3360 * are added to the threads hash table, and they will exit if the flag is set.
3361 * This ensures that no threads could be added to the hash later.
3362 * We will use shutting_down as the barrier for now.
3364 g_assert (shutting_down);
3367 * We make multiple calls to WaitForMultipleObjects since:
3368 * - we can only wait for MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS threads
3369 * - some threads could exit without becoming suspended
3374 * Make a copy of the hashtable since we can't do anything with
3375 * threads while threads_mutex is held.
3378 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3379 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3380 mono_threads_lock ();
3381 mono_g_hash_table_foreach (threads, collect_threads_for_suspend, wait);
3382 mono_threads_unlock ();
3385 /* Get the suspended events that we'll be waiting for */
3386 for (i = 0; i < wait->num; ++i) {
3387 MonoInternalThread *thread = wait->threads [i];
3389 if (mono_native_thread_id_equals (thread_get_tid (thread), self)
3390 || mono_gc_is_finalizer_internal_thread (thread)
3391 || (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE)
3393 //mono_threads_close_thread_handle (wait->handles [i]);
3394 wait->threads [i] = NULL; /* ignore this thread in next loop */
3398 LOCK_THREAD (thread);
3400 if ((thread->state & ThreadState_Suspended) != 0 ||
3401 (thread->state & ThreadState_StopRequested) != 0 ||
3402 (thread->state & ThreadState_Stopped) != 0) {
3403 UNLOCK_THREAD (thread);
3404 mono_threads_close_thread_handle (wait->handles [i]);
3405 wait->threads [i] = NULL; /* ignore this thread in next loop */
3411 /* Convert abort requests into suspend requests */
3412 if ((thread->state & ThreadState_AbortRequested) != 0)
3413 thread->state &= ~ThreadState_AbortRequested;
3415 thread->state |= ThreadState_SuspendRequested;
3417 /* Signal the thread to suspend + calls UNLOCK_THREAD (thread) */
3418 async_suspend_internal (thread, TRUE);
3420 if (eventidx <= 0) {
3422 * If there are threads which are starting up, we wait until they
3423 * are suspended when they try to register in the threads hash.
3424 * This is guaranteed to finish, since the threads which can create new
3425 * threads get suspended after a while.
3426 * FIXME: The finalizer thread can still create new threads.
3428 mono_threads_lock ();
3429 if (threads_starting_up)
3430 starting = mono_g_hash_table_size (threads_starting_up) > 0;
3433 mono_threads_unlock ();
3435 mono_thread_info_sleep (100, NULL);
3443 MonoInternalThread *thread;
3444 MonoStackFrameInfo *frames;
3445 int nframes, max_frames;
3446 int nthreads, max_threads;
3447 MonoInternalThread **threads;
3448 } ThreadDumpUserData;
3450 static gboolean thread_dump_requested;
3452 /* This needs to be async safe */
3454 collect_frame (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
3456 ThreadDumpUserData *ud = (ThreadDumpUserData *)data;
3458 if (ud->nframes < ud->max_frames) {
3459 memcpy (&ud->frames [ud->nframes], frame, sizeof (MonoStackFrameInfo));
3466 /* This needs to be async safe */
3467 static SuspendThreadResult
3468 get_thread_dump (MonoThreadInfo *info, gpointer ud)
3470 ThreadDumpUserData *user_data = (ThreadDumpUserData *)ud;
3471 MonoInternalThread *thread = user_data->thread;
3474 /* This no longer works with remote unwinding */
3475 g_string_append_printf (text, " tid=0x%p this=0x%p ", (gpointer)(gsize)thread->tid, thread);
3476 mono_thread_info_describe (info, text);
3477 g_string_append (text, "\n");
3480 if (thread == mono_thread_internal_current ())
3481 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (collect_frame, NULL, MONO_UNWIND_SIGNAL_SAFE, ud);
3483 mono_get_eh_callbacks ()->mono_walk_stack_with_state (collect_frame, mono_thread_info_get_suspend_state (info), MONO_UNWIND_SIGNAL_SAFE, ud);
3485 return MonoResumeThread;
3489 int nthreads, max_threads;
3490 MonoInternalThread **threads;
3491 } CollectThreadsUserData;
3494 collect_thread (gpointer key, gpointer value, gpointer user)
3496 CollectThreadsUserData *ud = (CollectThreadsUserData *)user;
3497 MonoInternalThread *thread = (MonoInternalThread *)value;
3499 if (ud->nthreads < ud->max_threads)
3500 ud->threads [ud->nthreads ++] = thread;
3504 * Collect running threads into the THREADS array.
3505 * THREADS should be an array allocated on the stack.
3508 collect_threads (MonoInternalThread **thread_array, int max_threads)
3510 CollectThreadsUserData ud;
3512 memset (&ud, 0, sizeof (ud));
3513 /* This array contains refs, but its on the stack, so its ok */
3514 ud.threads = thread_array;
3515 ud.max_threads = max_threads;
3517 mono_threads_lock ();
3518 mono_g_hash_table_foreach (threads, collect_thread, &ud);
3519 mono_threads_unlock ();
3525 dump_thread (MonoInternalThread *thread, ThreadDumpUserData *ud)
3527 GString* text = g_string_new (0);
3529 GError *error = NULL;
3532 ud->thread = thread;
3535 /* Collect frames for the thread */
3536 if (thread == mono_thread_internal_current ()) {
3537 get_thread_dump (mono_thread_info_current (), ud);
3539 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), FALSE, get_thread_dump, ud);
3543 * Do all the non async-safe work outside of get_thread_dump.
3546 name = g_utf16_to_utf8 (thread->name, thread->name_len, NULL, NULL, &error);
3548 g_string_append_printf (text, "\n\"%s\"", name);
3551 else if (thread->threadpool_thread) {
3552 g_string_append (text, "\n\"<threadpool thread>\"");
3554 g_string_append (text, "\n\"<unnamed thread>\"");
3557 for (i = 0; i < ud->nframes; ++i) {
3558 MonoStackFrameInfo *frame = &ud->frames [i];
3559 MonoMethod *method = NULL;
3561 if (frame->type == FRAME_TYPE_MANAGED)
3562 method = mono_jit_info_get_method (frame->ji);
3565 gchar *location = mono_debug_print_stack_frame (method, frame->native_offset, frame->domain);
3566 g_string_append_printf (text, " %s\n", location);
3569 g_string_append_printf (text, " at <unknown> <0x%05x>\n", frame->native_offset);
3573 fprintf (stdout, "%s", text->str);
3575 #if PLATFORM_WIN32 && TARGET_WIN32 && _DEBUG
3576 OutputDebugStringA(text->str);
3579 g_string_free (text, TRUE);
3584 mono_threads_perform_thread_dump (void)
3586 ThreadDumpUserData ud;
3587 MonoInternalThread *thread_array [128];
3588 int tindex, nthreads;
3590 if (!thread_dump_requested)
3593 printf ("Full thread dump:\n");
3595 /* Make a copy of the threads hash to avoid doing work inside threads_lock () */
3596 nthreads = collect_threads (thread_array, 128);
3598 memset (&ud, 0, sizeof (ud));
3599 ud.frames = g_new0 (MonoStackFrameInfo, 256);
3600 ud.max_frames = 256;
3602 for (tindex = 0; tindex < nthreads; ++tindex)
3603 dump_thread (thread_array [tindex], &ud);
3607 thread_dump_requested = FALSE;
3610 /* Obtain the thread dump of all threads */
3612 mono_threads_get_thread_dump (MonoArray **out_threads, MonoArray **out_stack_frames, MonoError *error)
3615 ThreadDumpUserData ud;
3616 MonoInternalThread *thread_array [128];
3617 MonoDomain *domain = mono_domain_get ();
3618 MonoDebugSourceLocation *location;
3619 int tindex, nthreads;
3621 mono_error_init (error);
3623 *out_threads = NULL;
3624 *out_stack_frames = NULL;
3626 /* Make a copy of the threads hash to avoid doing work inside threads_lock () */
3627 nthreads = collect_threads (thread_array, 128);
3629 memset (&ud, 0, sizeof (ud));
3630 ud.frames = g_new0 (MonoStackFrameInfo, 256);
3631 ud.max_frames = 256;
3633 *out_threads = mono_array_new_checked (domain, mono_defaults.thread_class, nthreads, error);
3636 *out_stack_frames = mono_array_new_checked (domain, mono_defaults.array_class, nthreads, error);
3640 for (tindex = 0; tindex < nthreads; ++tindex) {
3641 MonoInternalThread *thread = thread_array [tindex];
3642 MonoArray *thread_frames;
3648 /* Collect frames for the thread */
3649 if (thread == mono_thread_internal_current ()) {
3650 get_thread_dump (mono_thread_info_current (), &ud);
3652 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), FALSE, get_thread_dump, &ud);
3655 mono_array_setref_fast (*out_threads, tindex, mono_thread_current_for_thread (thread));
3657 thread_frames = mono_array_new_checked (domain, mono_defaults.stack_frame_class, ud.nframes, error);
3660 mono_array_setref_fast (*out_stack_frames, tindex, thread_frames);
3662 for (i = 0; i < ud.nframes; ++i) {
3663 MonoStackFrameInfo *frame = &ud.frames [i];
3664 MonoMethod *method = NULL;
3665 MonoStackFrame *sf = (MonoStackFrame *)mono_object_new_checked (domain, mono_defaults.stack_frame_class, error);
3669 sf->native_offset = frame->native_offset;
3671 if (frame->type == FRAME_TYPE_MANAGED)
3672 method = mono_jit_info_get_method (frame->ji);
3675 sf->method_address = (gsize) frame->ji->code_start;
3677 MonoReflectionMethod *rm = mono_method_get_object_checked (domain, method, NULL, error);
3680 MONO_OBJECT_SETREF (sf, method, rm);
3682 location = mono_debug_lookup_source_location (method, frame->native_offset, domain);
3684 sf->il_offset = location->il_offset;
3686 if (location && location->source_file) {
3687 MONO_OBJECT_SETREF (sf, filename, mono_string_new (domain, location->source_file));
3688 sf->line = location->row;
3689 sf->column = location->column;
3691 mono_debug_free_source_location (location);
3696 mono_array_setref (thread_frames, i, sf);
3702 return is_ok (error);
3706 * mono_threads_request_thread_dump:
3708 * Ask all threads except the current to print their stacktrace to stdout.
3711 mono_threads_request_thread_dump (void)
3713 /*The new thread dump code runs out of the finalizer thread. */
3714 thread_dump_requested = TRUE;
3715 mono_gc_finalize_notify ();
3720 gint allocated; /* +1 so that refs [allocated] == NULL */
3724 typedef struct ref_stack RefStack;
3727 ref_stack_new (gint initial_size)
3731 initial_size = MAX (initial_size, 16) + 1;
3732 rs = g_new0 (RefStack, 1);
3733 rs->refs = g_new0 (gpointer, initial_size);
3734 rs->allocated = initial_size;
3739 ref_stack_destroy (gpointer ptr)
3741 RefStack *rs = (RefStack *)ptr;
3750 ref_stack_push (RefStack *rs, gpointer ptr)
3752 g_assert (rs != NULL);
3754 if (rs->bottom >= rs->allocated) {
3755 rs->refs = (void **)g_realloc (rs->refs, rs->allocated * 2 * sizeof (gpointer) + 1);
3756 rs->allocated <<= 1;
3757 rs->refs [rs->allocated] = NULL;
3759 rs->refs [rs->bottom++] = ptr;
3763 ref_stack_pop (RefStack *rs)
3765 if (rs == NULL || rs->bottom == 0)
3769 rs->refs [rs->bottom] = NULL;
3773 ref_stack_find (RefStack *rs, gpointer ptr)
3780 for (refs = rs->refs; refs && *refs; refs++) {
3788 * mono_thread_push_appdomain_ref:
3790 * Register that the current thread may have references to objects in domain
3791 * @domain on its stack. Each call to this function should be paired with a
3792 * call to pop_appdomain_ref.
3795 mono_thread_push_appdomain_ref (MonoDomain *domain)
3797 MonoInternalThread *thread = mono_thread_internal_current ();
3800 /* printf ("PUSH REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, domain->friendly_name); */
3801 SPIN_LOCK (thread->lock_thread_id);
3802 if (thread->appdomain_refs == NULL)
3803 thread->appdomain_refs = ref_stack_new (16);
3804 ref_stack_push ((RefStack *)thread->appdomain_refs, domain);
3805 SPIN_UNLOCK (thread->lock_thread_id);
3810 mono_thread_pop_appdomain_ref (void)
3812 MonoInternalThread *thread = mono_thread_internal_current ();
3815 /* printf ("POP REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, ((MonoDomain*)(thread->appdomain_refs->data))->friendly_name); */
3816 SPIN_LOCK (thread->lock_thread_id);
3817 ref_stack_pop ((RefStack *)thread->appdomain_refs);
3818 SPIN_UNLOCK (thread->lock_thread_id);
3823 mono_thread_internal_has_appdomain_ref (MonoInternalThread *thread, MonoDomain *domain)
3826 SPIN_LOCK (thread->lock_thread_id);
3827 res = ref_stack_find ((RefStack *)thread->appdomain_refs, domain);
3828 SPIN_UNLOCK (thread->lock_thread_id);
3833 mono_thread_has_appdomain_ref (MonoThread *thread, MonoDomain *domain)
3835 return mono_thread_internal_has_appdomain_ref (thread->internal_thread, domain);
3838 typedef struct abort_appdomain_data {
3839 struct wait_data wait;
3841 } abort_appdomain_data;
3844 collect_appdomain_thread (gpointer key, gpointer value, gpointer user_data)
3846 MonoInternalThread *thread = (MonoInternalThread*)value;
3847 abort_appdomain_data *data = (abort_appdomain_data*)user_data;
3848 MonoDomain *domain = data->domain;
3850 if (mono_thread_internal_has_appdomain_ref (thread, domain)) {
3851 /* printf ("ABORTING THREAD %p BECAUSE IT REFERENCES DOMAIN %s.\n", thread->tid, domain->friendly_name); */
3853 if(data->wait.num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS) {
3854 HANDLE handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3857 data->wait.handles [data->wait.num] = handle;
3858 data->wait.threads [data->wait.num] = thread;
3861 /* Just ignore the rest, we can't do anything with
3869 * mono_threads_abort_appdomain_threads:
3871 * Abort threads which has references to the given appdomain.
3874 mono_threads_abort_appdomain_threads (MonoDomain *domain, int timeout)
3876 #ifdef __native_client__
3880 abort_appdomain_data user_data;
3882 int orig_timeout = timeout;
3885 THREAD_DEBUG (g_message ("%s: starting abort", __func__));
3887 start_time = mono_msec_ticks ();
3889 mono_threads_lock ();
3891 user_data.domain = domain;
3892 user_data.wait.num = 0;
3893 /* This shouldn't take any locks */
3894 mono_g_hash_table_foreach (threads, collect_appdomain_thread, &user_data);
3895 mono_threads_unlock ();
3897 if (user_data.wait.num > 0) {
3898 /* Abort the threads outside the threads lock */
3899 for (i = 0; i < user_data.wait.num; ++i)
3900 mono_thread_internal_abort (user_data.wait.threads [i]);
3903 * We should wait for the threads either to abort, or to leave the
3904 * domain. We can't do the latter, so we wait with a timeout.
3906 wait_for_tids (&user_data.wait, 100);
3909 /* Update remaining time */
3910 timeout -= mono_msec_ticks () - start_time;
3911 start_time = mono_msec_ticks ();
3913 if (orig_timeout != -1 && timeout < 0)
3916 while (user_data.wait.num > 0);
3918 THREAD_DEBUG (g_message ("%s: abort done", __func__));
3924 clear_cached_culture (gpointer key, gpointer value, gpointer user_data)
3926 MonoInternalThread *thread = (MonoInternalThread*)value;
3927 MonoDomain *domain = (MonoDomain*)user_data;
3930 /* No locking needed here */
3931 /* FIXME: why no locking? writes to the cache are protected with synch_cs above */
3933 if (thread->cached_culture_info) {
3934 for (i = 0; i < NUM_CACHED_CULTURES * 2; ++i) {
3935 MonoObject *obj = mono_array_get (thread->cached_culture_info, MonoObject*, i);
3936 if (obj && obj->vtable->domain == domain)
3937 mono_array_set (thread->cached_culture_info, MonoObject*, i, NULL);
3943 * mono_threads_clear_cached_culture:
3945 * Clear the cached_current_culture from all threads if it is in the
3949 mono_threads_clear_cached_culture (MonoDomain *domain)
3951 mono_threads_lock ();
3952 mono_g_hash_table_foreach (threads, clear_cached_culture, domain);
3953 mono_threads_unlock ();
3957 * mono_thread_get_undeniable_exception:
3959 * Return an exception which needs to be raised when leaving a catch clause.
3960 * This is used for undeniable exception propagation.
3963 mono_thread_get_undeniable_exception (void)
3965 MonoInternalThread *thread = mono_thread_internal_current ();
3967 if (thread && thread->abort_exc && !is_running_protected_wrapper ()) {
3969 * FIXME: Clear the abort exception and return an AppDomainUnloaded
3970 * exception if the thread no longer references a dying appdomain.
3972 thread->abort_exc->trace_ips = NULL;
3973 thread->abort_exc->stack_trace = NULL;
3974 return thread->abort_exc;
3980 #if MONO_SMALL_CONFIG
3981 #define NUM_STATIC_DATA_IDX 4
3982 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
3986 #define NUM_STATIC_DATA_IDX 8
3987 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
3988 1024, 4096, 16384, 65536, 262144, 1048576, 4194304, 16777216
3992 static MonoBitSet *thread_reference_bitmaps [NUM_STATIC_DATA_IDX];
3993 static MonoBitSet *context_reference_bitmaps [NUM_STATIC_DATA_IDX];
3996 mark_slots (void *addr, MonoBitSet **bitmaps, MonoGCMarkFunc mark_func, void *gc_data)
3998 gpointer *static_data = (gpointer *)addr;
4000 for (int i = 0; i < NUM_STATIC_DATA_IDX; ++i) {
4001 void **ptr = (void **)static_data [i];
4006 MONO_BITSET_FOREACH (bitmaps [i], idx, {
4007 void **p = ptr + idx;
4010 mark_func ((MonoObject**)p, gc_data);
4016 mark_tls_slots (void *addr, MonoGCMarkFunc mark_func, void *gc_data)
4018 mark_slots (addr, thread_reference_bitmaps, mark_func, gc_data);
4022 mark_ctx_slots (void *addr, MonoGCMarkFunc mark_func, void *gc_data)
4024 mark_slots (addr, context_reference_bitmaps, mark_func, gc_data);
4028 * mono_alloc_static_data
4030 * Allocate memory blocks for storing threads or context static data
4033 mono_alloc_static_data (gpointer **static_data_ptr, guint32 offset, gboolean threadlocal)
4035 guint idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4038 gpointer* static_data = *static_data_ptr;
4040 static MonoGCDescriptor tls_desc = MONO_GC_DESCRIPTOR_NULL;
4041 static MonoGCDescriptor ctx_desc = MONO_GC_DESCRIPTOR_NULL;
4043 if (mono_gc_user_markers_supported ()) {
4044 if (tls_desc == MONO_GC_DESCRIPTOR_NULL)
4045 tls_desc = mono_gc_make_root_descr_user (mark_tls_slots);
4047 if (ctx_desc == MONO_GC_DESCRIPTOR_NULL)
4048 ctx_desc = mono_gc_make_root_descr_user (mark_ctx_slots);
4051 static_data = (void **)mono_gc_alloc_fixed (static_data_size [0], threadlocal ? tls_desc : ctx_desc,
4052 threadlocal ? MONO_ROOT_SOURCE_THREAD_STATIC : MONO_ROOT_SOURCE_CONTEXT_STATIC,
4053 threadlocal ? "managed thread-static variables" : "managed context-static variables");
4054 *static_data_ptr = static_data;
4055 static_data [0] = static_data;
4058 for (i = 1; i <= idx; ++i) {
4059 if (static_data [i])
4062 if (mono_gc_user_markers_supported ())
4063 static_data [i] = g_malloc0 (static_data_size [i]);
4065 static_data [i] = mono_gc_alloc_fixed (static_data_size [i], MONO_GC_DESCRIPTOR_NULL,
4066 threadlocal ? MONO_ROOT_SOURCE_THREAD_STATIC : MONO_ROOT_SOURCE_CONTEXT_STATIC,
4067 threadlocal ? "managed thread-static variables" : "managed context-static variables");
4072 mono_free_static_data (gpointer* static_data)
4075 for (i = 1; i < NUM_STATIC_DATA_IDX; ++i) {
4076 gpointer p = static_data [i];
4080 * At this point, the static data pointer array is still registered with the
4081 * GC, so must ensure that mark_tls_slots() will not encounter any invalid
4082 * data. Freeing the individual arrays without first nulling their slots
4083 * would make it possible for mark_tls/ctx_slots() to encounter a pointer to
4084 * such an already freed array. See bug #13813.
4086 static_data [i] = NULL;
4087 mono_memory_write_barrier ();
4088 if (mono_gc_user_markers_supported ())
4091 mono_gc_free_fixed (p);
4093 mono_gc_free_fixed (static_data);
4097 * mono_init_static_data_info
4099 * Initializes static data counters
4101 static void mono_init_static_data_info (StaticDataInfo *static_data)
4103 static_data->idx = 0;
4104 static_data->offset = 0;
4105 static_data->freelist = NULL;
4109 * mono_alloc_static_data_slot
4111 * Generates an offset for static data. static_data contains the counters
4112 * used to generate it.
4115 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align)
4117 if (!static_data->idx && !static_data->offset) {
4119 * we use the first chunk of the first allocation also as
4120 * an array for the rest of the data
4122 static_data->offset = sizeof (gpointer) * NUM_STATIC_DATA_IDX;
4124 static_data->offset += align - 1;
4125 static_data->offset &= ~(align - 1);
4126 if (static_data->offset + size >= static_data_size [static_data->idx]) {
4127 static_data->idx ++;
4128 g_assert (size <= static_data_size [static_data->idx]);
4129 g_assert (static_data->idx < NUM_STATIC_DATA_IDX);
4130 static_data->offset = 0;
4132 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (static_data->idx, static_data->offset, 0);
4133 static_data->offset += size;
4138 * ensure thread static fields already allocated are valid for thread
4139 * This function is called when a thread is created or on thread attach.
4142 thread_adjust_static_data (MonoInternalThread *thread)
4144 mono_threads_lock ();
4145 if (thread_static_info.offset || thread_static_info.idx > 0) {
4146 /* get the current allocated size */
4147 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (thread_static_info.idx, thread_static_info.offset, 0);
4148 mono_alloc_static_data (&thread->static_data, offset, TRUE);
4150 mono_threads_unlock ();
4154 * LOCKING: requires that threads_mutex is held
4157 context_adjust_static_data (MonoAppContext *ctx)
4159 if (context_static_info.offset || context_static_info.idx > 0) {
4160 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (context_static_info.idx, context_static_info.offset, 0);
4161 mono_alloc_static_data (&ctx->static_data, offset, FALSE);
4162 ctx->data->static_data = ctx->static_data;
4167 * LOCKING: requires that threads_mutex is held
4170 alloc_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
4172 MonoInternalThread *thread = (MonoInternalThread *)value;
4173 guint32 offset = GPOINTER_TO_UINT (user);
4175 mono_alloc_static_data (&(thread->static_data), offset, TRUE);
4179 * LOCKING: requires that threads_mutex is held
4182 alloc_context_static_data_helper (gpointer key, gpointer value, gpointer user)
4184 MonoAppContext *ctx = (MonoAppContext *) mono_gchandle_get_target (GPOINTER_TO_INT (key));
4189 guint32 offset = GPOINTER_TO_UINT (user);
4190 mono_alloc_static_data (&ctx->static_data, offset, FALSE);
4191 ctx->data->static_data = ctx->static_data;
4194 static StaticDataFreeList*
4195 search_slot_in_freelist (StaticDataInfo *static_data, guint32 size, guint32 align)
4197 StaticDataFreeList* prev = NULL;
4198 StaticDataFreeList* tmp = static_data->freelist;
4200 if (tmp->size == size) {
4202 prev->next = tmp->next;
4204 static_data->freelist = tmp->next;
4213 #if SIZEOF_VOID_P == 4
4220 update_reference_bitmap (MonoBitSet **sets, guint32 offset, uintptr_t *bitmap, int numbits)
4222 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4224 sets [idx] = mono_bitset_new (static_data_size [idx] / sizeof (uintptr_t), 0);
4225 MonoBitSet *rb = sets [idx];
4226 offset = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
4227 offset /= sizeof (uintptr_t);
4228 /* offset is now the bitmap offset */
4229 for (int i = 0; i < numbits; ++i) {
4230 if (bitmap [i / sizeof (uintptr_t)] & (ONE_P << (i & (sizeof (uintptr_t) * 8 -1))))
4231 mono_bitset_set_fast (rb, offset + i);
4236 clear_reference_bitmap (MonoBitSet **sets, guint32 offset, guint32 size)
4238 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4239 MonoBitSet *rb = sets [idx];
4240 offset = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
4241 offset /= sizeof (uintptr_t);
4242 /* offset is now the bitmap offset */
4243 for (int i = 0; i < size / sizeof (uintptr_t); i++)
4244 mono_bitset_clear_fast (rb, offset + i);
4248 mono_alloc_special_static_data (guint32 static_type, guint32 size, guint32 align, uintptr_t *bitmap, int numbits)
4250 g_assert (static_type == SPECIAL_STATIC_THREAD || static_type == SPECIAL_STATIC_CONTEXT);
4252 StaticDataInfo *info;
4255 if (static_type == SPECIAL_STATIC_THREAD) {
4256 info = &thread_static_info;
4257 sets = thread_reference_bitmaps;
4259 info = &context_static_info;
4260 sets = context_reference_bitmaps;
4263 mono_threads_lock ();
4265 StaticDataFreeList *item = search_slot_in_freelist (info, size, align);
4269 offset = item->offset;
4272 offset = mono_alloc_static_data_slot (info, size, align);
4275 update_reference_bitmap (sets, offset, bitmap, numbits);
4277 if (static_type == SPECIAL_STATIC_THREAD) {
4278 /* This can be called during startup */
4279 if (threads != NULL)
4280 mono_g_hash_table_foreach (threads, alloc_thread_static_data_helper, GUINT_TO_POINTER (offset));
4282 if (contexts != NULL)
4283 g_hash_table_foreach (contexts, alloc_context_static_data_helper, GUINT_TO_POINTER (offset));
4285 ACCESS_SPECIAL_STATIC_OFFSET (offset, type) = SPECIAL_STATIC_OFFSET_TYPE_CONTEXT;
4288 mono_threads_unlock ();
4294 mono_get_special_static_data_for_thread (MonoInternalThread *thread, guint32 offset)
4296 guint32 static_type = ACCESS_SPECIAL_STATIC_OFFSET (offset, type);
4298 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4299 return get_thread_static_data (thread, offset);
4301 return get_context_static_data (thread->current_appcontext, offset);
4306 mono_get_special_static_data (guint32 offset)
4308 return mono_get_special_static_data_for_thread (mono_thread_internal_current (), offset);
4317 * LOCKING: requires that threads_mutex is held
4320 free_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
4322 MonoInternalThread *thread = (MonoInternalThread *)value;
4323 OffsetSize *data = (OffsetSize *)user;
4324 int idx = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, index);
4325 int off = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, offset);
4328 if (!thread->static_data || !thread->static_data [idx])
4330 ptr = ((char*) thread->static_data [idx]) + off;
4331 mono_gc_bzero_atomic (ptr, data->size);
4335 * LOCKING: requires that threads_mutex is held
4338 free_context_static_data_helper (gpointer key, gpointer value, gpointer user)
4340 MonoAppContext *ctx = (MonoAppContext *) mono_gchandle_get_target (GPOINTER_TO_INT (key));
4345 OffsetSize *data = (OffsetSize *)user;
4346 int idx = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, index);
4347 int off = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, offset);
4350 if (!ctx->static_data || !ctx->static_data [idx])
4353 ptr = ((char*) ctx->static_data [idx]) + off;
4354 mono_gc_bzero_atomic (ptr, data->size);
4358 do_free_special_slot (guint32 offset, guint32 size)
4360 guint32 static_type = ACCESS_SPECIAL_STATIC_OFFSET (offset, type);
4362 StaticDataInfo *info;
4364 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4365 info = &thread_static_info;
4366 sets = thread_reference_bitmaps;
4368 info = &context_static_info;
4369 sets = context_reference_bitmaps;
4372 guint32 data_offset = offset;
4373 ACCESS_SPECIAL_STATIC_OFFSET (data_offset, type) = 0;
4374 OffsetSize data = { data_offset, size };
4376 clear_reference_bitmap (sets, data.offset, data.size);
4378 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4379 if (threads != NULL)
4380 mono_g_hash_table_foreach (threads, free_thread_static_data_helper, &data);
4382 if (contexts != NULL)
4383 g_hash_table_foreach (contexts, free_context_static_data_helper, &data);
4386 if (!mono_runtime_is_shutting_down ()) {
4387 StaticDataFreeList *item = g_new0 (StaticDataFreeList, 1);
4389 item->offset = offset;
4392 item->next = info->freelist;
4393 info->freelist = item;
4398 do_free_special (gpointer key, gpointer value, gpointer data)
4400 MonoClassField *field = (MonoClassField *)key;
4401 guint32 offset = GPOINTER_TO_UINT (value);
4404 size = mono_type_size (field->type, &align);
4405 do_free_special_slot (offset, size);
4409 mono_alloc_special_static_data_free (GHashTable *special_static_fields)
4411 mono_threads_lock ();
4413 g_hash_table_foreach (special_static_fields, do_free_special, NULL);
4415 mono_threads_unlock ();
4419 static void CALLBACK dummy_apc (ULONG_PTR param)
4425 * mono_thread_execute_interruption
4427 * Performs the operation that the requested thread state requires (abort,
4430 static MonoException*
4431 mono_thread_execute_interruption (void)
4433 MonoInternalThread *thread = mono_thread_internal_current ();
4434 MonoThread *sys_thread = mono_thread_current ();
4436 LOCK_THREAD (thread);
4438 /* MonoThread::interruption_requested can only be changed with atomics */
4439 if (InterlockedCompareExchange (&thread->interruption_requested, FALSE, TRUE)) {
4440 /* this will consume pending APC calls */
4442 WaitForSingleObjectEx (GetCurrentThread(), 0, TRUE);
4444 InterlockedDecrement (&thread_interruption_requested);
4446 /* Clear the interrupted flag of the thread so it can wait again */
4447 mono_thread_info_clear_self_interrupt ();
4450 /* If there's a pending exception and an AbortRequested, the pending exception takes precedence */
4451 if (sys_thread->pending_exception) {
4454 exc = sys_thread->pending_exception;
4455 sys_thread->pending_exception = NULL;
4457 UNLOCK_THREAD (thread);
4459 } else if ((thread->state & ThreadState_AbortRequested) != 0) {
4460 UNLOCK_THREAD (thread);
4461 g_assert (sys_thread->pending_exception == NULL);
4462 if (thread->abort_exc == NULL) {
4464 * This might be racy, but it has to be called outside the lock
4465 * since it calls managed code.
4467 MONO_OBJECT_SETREF (thread, abort_exc, mono_get_exception_thread_abort ());
4469 return thread->abort_exc;
4471 else if ((thread->state & ThreadState_SuspendRequested) != 0) {
4472 /* calls UNLOCK_THREAD (thread) */
4473 self_suspend_internal ();
4476 else if ((thread->state & ThreadState_StopRequested) != 0) {
4477 /* FIXME: do this through the JIT? */
4479 UNLOCK_THREAD (thread);
4481 mono_thread_exit ();
4483 } else if (thread->thread_interrupt_requested) {
4485 thread->thread_interrupt_requested = FALSE;
4486 UNLOCK_THREAD (thread);
4488 return(mono_get_exception_thread_interrupted ());
4491 UNLOCK_THREAD (thread);
4497 * mono_thread_request_interruption
4499 * A signal handler can call this method to request the interruption of a
4500 * thread. The result of the interruption will depend on the current state of
4501 * the thread. If the result is an exception that needs to be throw, it is
4502 * provided as return value.
4505 mono_thread_request_interruption (gboolean running_managed)
4507 MonoInternalThread *thread = mono_thread_internal_current ();
4509 /* The thread may already be stopping */
4514 if (thread->interrupt_on_stop &&
4515 thread->state & ThreadState_StopRequested &&
4516 thread->state & ThreadState_Background)
4520 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4522 InterlockedIncrement (&thread_interruption_requested);
4524 if (!running_managed || is_running_protected_wrapper ()) {
4525 /* Can't stop while in unmanaged code. Increase the global interruption
4526 request count. When exiting the unmanaged method the count will be
4527 checked and the thread will be interrupted. */
4529 /* this will awake the thread if it is in WaitForSingleObject
4531 /* Our implementation of this function ignores the func argument */
4533 QueueUserAPC ((PAPCFUNC)dummy_apc, thread->handle, (ULONG_PTR)NULL);
4535 mono_thread_info_self_interrupt ();
4540 return mono_thread_execute_interruption ();
4544 /*This function should be called by a thread after it has exited all of
4545 * its handle blocks at interruption time.*/
4547 mono_thread_resume_interruption (void)
4549 MonoInternalThread *thread = mono_thread_internal_current ();
4550 gboolean still_aborting;
4552 /* The thread may already be stopping */
4556 LOCK_THREAD (thread);
4557 still_aborting = (thread->state & (ThreadState_AbortRequested|ThreadState_StopRequested)) != 0;
4558 UNLOCK_THREAD (thread);
4560 /*This can happen if the protected block called Thread::ResetAbort*/
4561 if (!still_aborting)
4564 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4566 InterlockedIncrement (&thread_interruption_requested);
4568 mono_thread_info_self_interrupt ();
4570 return mono_thread_execute_interruption ();
4573 gboolean mono_thread_interruption_requested ()
4575 if (thread_interruption_requested) {
4576 MonoInternalThread *thread = mono_thread_internal_current ();
4577 /* The thread may already be stopping */
4579 return (thread->interruption_requested);
4584 static MonoException*
4585 mono_thread_interruption_checkpoint_request (gboolean bypass_abort_protection)
4587 MonoInternalThread *thread = mono_thread_internal_current ();
4589 /* The thread may already be stopping */
4593 if (thread->interruption_requested && (bypass_abort_protection || !is_running_protected_wrapper ())) {
4594 MonoException* exc = mono_thread_execute_interruption ();
4602 * Performs the interruption of the current thread, if one has been requested,
4603 * and the thread is not running a protected wrapper.
4604 * Return the exception which needs to be thrown, if any.
4607 mono_thread_interruption_checkpoint (void)
4609 return mono_thread_interruption_checkpoint_request (FALSE);
4613 * Performs the interruption of the current thread, if one has been requested.
4614 * Return the exception which needs to be thrown, if any.
4617 mono_thread_force_interruption_checkpoint_noraise (void)
4619 return mono_thread_interruption_checkpoint_request (TRUE);
4623 * mono_set_pending_exception:
4625 * Set the pending exception of the current thread to EXC.
4626 * The exception will be thrown when execution returns to managed code.
4629 mono_set_pending_exception (MonoException *exc)
4631 MonoThread *thread = mono_thread_current ();
4633 /* The thread may already be stopping */
4637 MONO_OBJECT_SETREF (thread, pending_exception, exc);
4639 mono_thread_request_interruption (FALSE);
4643 * mono_thread_interruption_request_flag:
4645 * Returns the address of a flag that will be non-zero if an interruption has
4646 * been requested for a thread. The thread to interrupt may not be the current
4647 * thread, so an additional call to mono_thread_interruption_requested() or
4648 * mono_thread_interruption_checkpoint() is allways needed if the flag is not
4651 gint32* mono_thread_interruption_request_flag ()
4653 return &thread_interruption_requested;
4657 mono_thread_init_apartment_state (void)
4660 MonoInternalThread* thread = mono_thread_internal_current ();
4662 /* Positive return value indicates success, either
4663 * S_OK if this is first CoInitialize call, or
4664 * S_FALSE if CoInitialize already called, but with same
4665 * threading model. A negative value indicates failure,
4666 * probably due to trying to change the threading model.
4668 if (CoInitializeEx(NULL, (thread->apartment_state == ThreadApartmentState_STA)
4669 ? COINIT_APARTMENTTHREADED
4670 : COINIT_MULTITHREADED) < 0) {
4671 thread->apartment_state = ThreadApartmentState_Unknown;
4677 mono_thread_cleanup_apartment_state (void)
4680 MonoInternalThread* thread = mono_thread_internal_current ();
4682 if (thread && thread->apartment_state != ThreadApartmentState_Unknown) {
4689 mono_thread_set_state (MonoInternalThread *thread, MonoThreadState state)
4691 LOCK_THREAD (thread);
4692 thread->state |= state;
4693 UNLOCK_THREAD (thread);
4697 mono_thread_clr_state (MonoInternalThread *thread, MonoThreadState state)
4699 LOCK_THREAD (thread);
4700 thread->state &= ~state;
4701 UNLOCK_THREAD (thread);
4705 mono_thread_test_state (MonoInternalThread *thread, MonoThreadState test)
4707 gboolean ret = FALSE;
4709 LOCK_THREAD (thread);
4711 if ((thread->state & test) != 0) {
4715 UNLOCK_THREAD (thread);
4720 static gboolean has_tls_get = FALSE;
4723 mono_runtime_set_has_tls_get (gboolean val)
4729 mono_runtime_has_tls_get (void)
4735 self_interrupt_thread (void *_unused)
4737 MonoThreadInfo *info = mono_thread_info_current ();
4738 MonoException *exc = mono_thread_execute_interruption ();
4739 if (exc) /*We must use _with_context since we didn't trampoline into the runtime*/
4740 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. */
4741 g_assert_not_reached (); /*this MUST not happen since we can't resume from an async call*/
4745 mono_jit_info_match (MonoJitInfo *ji, gpointer ip)
4749 return ji->code_start <= ip && (char*)ip < (char*)ji->code_start + ji->code_size;
4753 last_managed (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
4755 MonoJitInfo **dest = (MonoJitInfo **)data;
4761 mono_thread_info_get_last_managed (MonoThreadInfo *info)
4763 MonoJitInfo *ji = NULL;
4768 * The suspended thread might be holding runtime locks. Make sure we don't try taking
4769 * any runtime locks while unwinding. In coop case we shouldn't safepoint in regions
4770 * where we hold runtime locks.
4772 if (!mono_threads_is_coop_enabled ())
4773 mono_thread_info_set_is_async_context (TRUE);
4774 mono_get_eh_callbacks ()->mono_walk_stack_with_state (last_managed, mono_thread_info_get_suspend_state (info), MONO_UNWIND_SIGNAL_SAFE, &ji);
4775 if (!mono_threads_is_coop_enabled ())
4776 mono_thread_info_set_is_async_context (FALSE);
4781 MonoInternalThread *thread;
4782 gboolean install_async_abort;
4783 MonoThreadInfoInterruptToken *interrupt_token;
4786 static SuspendThreadResult
4787 async_abort_critical (MonoThreadInfo *info, gpointer ud)
4789 AbortThreadData *data = (AbortThreadData *)ud;
4790 MonoInternalThread *thread = data->thread;
4791 MonoJitInfo *ji = NULL;
4792 gboolean protected_wrapper;
4793 gboolean running_managed;
4795 if (mono_get_eh_callbacks ()->mono_install_handler_block_guard (mono_thread_info_get_suspend_state (info)))
4796 return MonoResumeThread;
4798 /*someone is already interrupting it*/
4799 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4800 return MonoResumeThread;
4802 InterlockedIncrement (&thread_interruption_requested);
4804 ji = mono_thread_info_get_last_managed (info);
4805 protected_wrapper = ji && !ji->is_trampoline && !ji->async && mono_threads_is_critical_method (mono_jit_info_get_method (ji));
4806 running_managed = mono_jit_info_match (ji, MONO_CONTEXT_GET_IP (&mono_thread_info_get_suspend_state (info)->ctx));
4808 if (!protected_wrapper && running_managed) {
4809 /*We are in managed code*/
4810 /*Set the thread to call */
4811 if (data->install_async_abort)
4812 mono_thread_info_setup_async_call (info, self_interrupt_thread, NULL);
4813 return MonoResumeThread;
4816 * This will cause waits to be broken.
4817 * It will also prevent the thread from entering a wait, so if the thread returns
4818 * from the wait before it receives the abort signal, it will just spin in the wait
4819 * functions in the io-layer until the signal handler calls QueueUserAPC which will
4822 data->interrupt_token = mono_thread_info_prepare_interrupt (info);
4824 return MonoResumeThread;
4829 async_abort_internal (MonoInternalThread *thread, gboolean install_async_abort)
4831 AbortThreadData data;
4833 g_assert (thread != mono_thread_internal_current ());
4835 data.thread = thread;
4836 data.install_async_abort = install_async_abort;
4837 data.interrupt_token = NULL;
4839 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), TRUE, async_abort_critical, &data);
4840 if (data.interrupt_token)
4841 mono_thread_info_finish_interrupt (data.interrupt_token);
4842 /*FIXME we need to wait for interruption to complete -- figure out how much into interruption we should wait for here*/
4846 self_abort_internal (MonoError *error)
4850 mono_error_init (error);
4852 /* FIXME this is insanely broken, it doesn't cause interruption to happen synchronously
4853 * since passing FALSE to mono_thread_request_interruption makes sure it returns NULL */
4855 exc = mono_thread_request_interruption (TRUE);
4857 mono_error_set_exception_instance (error, exc);
4859 mono_thread_info_self_interrupt ();
4863 MonoInternalThread *thread;
4865 MonoThreadInfoInterruptToken *interrupt_token;
4866 } SuspendThreadData;
4868 static SuspendThreadResult
4869 async_suspend_critical (MonoThreadInfo *info, gpointer ud)
4871 SuspendThreadData *data = (SuspendThreadData *)ud;
4872 MonoInternalThread *thread = data->thread;
4873 MonoJitInfo *ji = NULL;
4874 gboolean protected_wrapper;
4875 gboolean running_managed;
4877 ji = mono_thread_info_get_last_managed (info);
4878 protected_wrapper = ji && !ji->is_trampoline && !ji->async && mono_threads_is_critical_method (mono_jit_info_get_method (ji));
4879 running_managed = mono_jit_info_match (ji, MONO_CONTEXT_GET_IP (&mono_thread_info_get_suspend_state (info)->ctx));
4881 if (running_managed && !protected_wrapper) {
4882 thread->state &= ~ThreadState_SuspendRequested;
4883 thread->state |= ThreadState_Suspended;
4884 return KeepSuspended;
4886 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 0)
4887 InterlockedIncrement (&thread_interruption_requested);
4888 if (data->interrupt)
4889 data->interrupt_token = mono_thread_info_prepare_interrupt ((MonoThreadInfo *)thread->thread_info);
4891 return MonoResumeThread;
4895 /* LOCKING: called with @thread synch_cs held, and releases it */
4897 async_suspend_internal (MonoInternalThread *thread, gboolean interrupt)
4899 SuspendThreadData data;
4901 g_assert (thread != mono_thread_internal_current ());
4903 data.thread = thread;
4904 data.interrupt = interrupt;
4905 data.interrupt_token = NULL;
4907 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), interrupt, async_suspend_critical, &data);
4908 if (data.interrupt_token)
4909 mono_thread_info_finish_interrupt (data.interrupt_token);
4911 UNLOCK_THREAD (thread);
4914 /* LOCKING: called with @thread synch_cs held, and releases it */
4916 self_suspend_internal (void)
4918 MonoInternalThread *thread;
4920 thread = mono_thread_internal_current ();
4922 mono_thread_info_begin_self_suspend ();
4923 thread->state &= ~ThreadState_SuspendRequested;
4924 thread->state |= ThreadState_Suspended;
4926 UNLOCK_THREAD (thread);
4928 mono_thread_info_end_self_suspend ();
4932 * mono_thread_is_foreign:
4933 * @thread: the thread to query
4935 * This function allows one to determine if a thread was created by the mono runtime and has
4936 * a well defined lifecycle or it's a foreigh one, created by the native environment.
4938 * Returns: TRUE if @thread was not created by the runtime.
4941 mono_thread_is_foreign (MonoThread *thread)
4943 MonoThreadInfo *info = (MonoThreadInfo *)thread->internal_thread->thread_info;
4944 return info->runtime_thread == FALSE;
4948 * mono_add_joinable_thread:
4950 * Add TID to the list of joinable threads.
4951 * LOCKING: Acquires the threads lock.
4954 mono_threads_add_joinable_thread (gpointer tid)
4958 * We cannot detach from threads because it causes problems like
4959 * 2fd16f60/r114307. So we collect them and join them when
4960 * we have time (in he finalizer thread).
4962 joinable_threads_lock ();
4963 if (!joinable_threads)
4964 joinable_threads = g_hash_table_new (NULL, NULL);
4965 g_hash_table_insert (joinable_threads, tid, tid);
4966 joinable_thread_count ++;
4967 joinable_threads_unlock ();
4969 mono_gc_finalize_notify ();
4974 * mono_threads_join_threads:
4976 * Join all joinable threads. This is called from the finalizer thread.
4977 * LOCKING: Acquires the threads lock.
4980 mono_threads_join_threads (void)
4983 GHashTableIter iter;
4990 if (!joinable_thread_count)
4994 joinable_threads_lock ();
4996 if (g_hash_table_size (joinable_threads)) {
4997 g_hash_table_iter_init (&iter, joinable_threads);
4998 g_hash_table_iter_next (&iter, &key, (void**)&tid);
4999 thread = (pthread_t)tid;
5000 g_hash_table_remove (joinable_threads, key);
5001 joinable_thread_count --;
5004 joinable_threads_unlock ();
5006 if (thread != pthread_self ()) {
5008 /* This shouldn't block */
5009 pthread_join (thread, NULL);
5022 * Wait for thread TID to exit.
5023 * LOCKING: Acquires the threads lock.
5026 mono_thread_join (gpointer tid)
5030 gboolean found = FALSE;
5032 joinable_threads_lock ();
5033 if (!joinable_threads)
5034 joinable_threads = g_hash_table_new (NULL, NULL);
5035 if (g_hash_table_lookup (joinable_threads, tid)) {
5036 g_hash_table_remove (joinable_threads, tid);
5037 joinable_thread_count --;
5040 joinable_threads_unlock ();
5043 thread = (pthread_t)tid;
5045 pthread_join (thread, NULL);
5051 mono_thread_internal_check_for_interruption_critical (MonoInternalThread *thread)
5053 if ((thread->state & (ThreadState_StopRequested | ThreadState_SuspendRequested)) != 0)
5054 mono_thread_interruption_checkpoint ();
5058 mono_thread_internal_unhandled_exception (MonoObject* exc)
5060 MonoClass *klass = exc->vtable->klass;
5061 if (is_threadabort_exception (klass)) {
5062 mono_thread_internal_reset_abort (mono_thread_internal_current ());
5063 } else if (!is_appdomainunloaded_exception (klass)
5064 && mono_runtime_unhandled_exception_policy_get () == MONO_UNHANDLED_POLICY_CURRENT) {
5065 mono_unhandled_exception (exc);
5066 if (mono_environment_exitcode_get () == 1) {
5067 mono_environment_exitcode_set (255);
5068 mono_invoke_unhandled_exception_hook (exc);
5069 g_assert_not_reached ();
5075 ves_icall_System_Threading_Thread_GetStackTraces (MonoArray **out_threads, MonoArray **out_stack_traces)
5078 mono_threads_get_thread_dump (out_threads, out_stack_traces, &error);
5079 mono_error_set_pending_exception (&error);
5083 * mono_threads_attach_coop: called by native->managed wrappers
5087 * - @return: the original domain which needs to be restored, or NULL.
5090 * - @dummy: contains the original domain
5091 * - @return: a cookie containing current MonoThreadInfo*.
5094 mono_threads_attach_coop (MonoDomain *domain, gpointer *dummy)
5097 gboolean fresh_thread = FALSE;
5100 /* Happens when called from AOTed code which is only used in the root domain. */
5101 domain = mono_get_root_domain ();
5106 /* On coop, when we detached, we moved the thread from RUNNING->BLOCKING.
5107 * If we try to reattach we do a BLOCKING->RUNNING transition. If the thread
5108 * is fresh, mono_thread_attach() will do a STARTING->RUNNING transition so
5109 * we're only responsible for making the cookie. */
5110 if (mono_threads_is_coop_enabled ()) {
5111 MonoThreadInfo *info = mono_thread_info_current_unchecked ();
5112 fresh_thread = !info || !mono_thread_info_is_live (info);
5115 if (!mono_thread_internal_current ()) {
5116 mono_thread_attach_full (domain, FALSE);
5119 mono_thread_set_state (mono_thread_internal_current (), ThreadState_Background);
5122 orig = mono_domain_get ();
5124 mono_domain_set (domain, TRUE);
5126 if (!mono_threads_is_coop_enabled ())
5127 return orig != domain ? orig : NULL;
5131 /* mono_thread_attach put the thread in RUNNING mode from STARTING, but we need to
5132 * return the right cookie. */
5133 return mono_threads_enter_gc_unsafe_region_cookie ();
5136 /* thread state (BLOCKING|RUNNING) -> RUNNING */
5137 return mono_threads_enter_gc_unsafe_region (dummy);
5142 * mono_threads_detach_coop: called by native->managed wrappers
5145 * - @cookie: the original domain which needs to be restored, or NULL.
5149 * - @cookie: contains current MonoThreadInfo* if it was in BLOCKING mode, NULL otherwise
5150 * - @dummy: contains the original domain
5153 mono_threads_detach_coop (gpointer cookie, gpointer *dummy)
5155 MonoDomain *domain, *orig;
5157 if (!mono_threads_is_coop_enabled ()) {
5158 orig = (MonoDomain*) cookie;
5160 mono_domain_set (orig, TRUE);
5162 orig = (MonoDomain*) *dummy;
5164 domain = mono_domain_get ();
5167 /* it won't do anything if cookie is NULL
5168 * thread state RUNNING -> (RUNNING|BLOCKING) */
5169 mono_threads_exit_gc_unsafe_region (cookie, dummy);
5171 if (orig != domain) {
5173 mono_domain_unset ();
5175 mono_domain_set (orig, TRUE);