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 HANDLE thread_handle;
1009 MonoNativeThreadId tid;
1011 if ((thread = mono_thread_internal_current ())) {
1012 if (domain != mono_domain_get ())
1013 mono_domain_set (domain, TRUE);
1014 /* Already attached */
1015 return mono_thread_current ();
1018 if (!mono_gc_register_thread (&domain)) {
1019 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 ());
1022 thread = create_internal_thread ();
1024 thread_handle = mono_thread_info_open_handle ();
1025 g_assert (thread_handle);
1027 tid=mono_native_thread_id_get ();
1029 thread->handle = thread_handle;
1030 thread->tid = MONO_NATIVE_THREAD_ID_TO_UINT (tid);
1031 thread->stack_ptr = &tid;
1033 THREAD_DEBUG (g_message ("%s: Attached thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread_handle));
1035 info = mono_thread_info_current ();
1037 thread->thread_info = info;
1038 thread->small_id = info->small_id;
1040 current_thread = new_thread_with_internal (domain, thread);
1042 if (!handle_store (current_thread, force_attach)) {
1043 /* Mono is shutting down, so just wait for the end */
1045 mono_thread_info_sleep (10000, NULL);
1048 THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Setting current_object_key to %p", __func__, mono_native_thread_id_get (), thread));
1050 SET_CURRENT_OBJECT (thread);
1051 mono_domain_set (domain, TRUE);
1053 thread_adjust_static_data (thread);
1055 init_root_domain_thread (thread, current_thread);
1057 if (domain != mono_get_root_domain ())
1058 set_current_thread_for_domain (domain, thread, current_thread);
1061 if (mono_thread_attach_cb) {
1065 mono_thread_info_get_stack_bounds (&staddr, &stsize);
1068 mono_thread_attach_cb (MONO_NATIVE_THREAD_ID_TO_UINT (tid), &tid);
1070 mono_thread_attach_cb (MONO_NATIVE_THREAD_ID_TO_UINT (tid), staddr + stsize);
1073 /* Can happen when we attach the profiler helper thread in order to heapshot. */
1074 if (!info->tools_thread)
1075 // FIXME: Need a separate callback
1076 mono_profiler_thread_start (MONO_NATIVE_THREAD_ID_TO_UINT (tid));
1078 return current_thread;
1082 mono_thread_detach_internal (MonoInternalThread *thread)
1084 g_return_if_fail (thread != NULL);
1086 THREAD_DEBUG (g_message ("%s: mono_thread_detach for %p (%"G_GSIZE_FORMAT")", __func__, thread, (gsize)thread->tid));
1088 thread_cleanup (thread);
1090 SET_CURRENT_OBJECT (NULL);
1091 mono_domain_unset ();
1093 /* Don't need to CloseHandle this thread, even though we took a
1094 * reference in mono_thread_attach (), because the GC will do it
1095 * when the Thread object is finalised.
1100 mono_thread_detach (MonoThread *thread)
1103 mono_thread_detach_internal (thread->internal_thread);
1107 * mono_thread_detach_if_exiting:
1109 * Detach the current thread from the runtime if it is exiting, i.e. it is running pthread dtors.
1110 * This should be used at the end of embedding code which calls into managed code, and which
1111 * can be called from pthread dtors, like dealloc: implementations in objective-c.
1114 mono_thread_detach_if_exiting (void)
1116 if (mono_thread_info_is_exiting ()) {
1117 MonoInternalThread *thread;
1119 thread = mono_thread_internal_current ();
1121 mono_thread_detach_internal (thread);
1122 mono_thread_info_detach ();
1130 mono_thread_exit (void)
1132 MonoInternalThread *thread = mono_thread_internal_current ();
1134 THREAD_DEBUG (g_message ("%s: mono_thread_exit for %p (%"G_GSIZE_FORMAT")", __func__, thread, (gsize)thread->tid));
1136 thread_cleanup (thread);
1137 SET_CURRENT_OBJECT (NULL);
1138 mono_domain_unset ();
1140 /* we could add a callback here for embedders to use. */
1141 if (mono_thread_get_main () && (thread == mono_thread_get_main ()->internal_thread))
1142 exit (mono_environment_exitcode_get ());
1143 mono_thread_info_exit ();
1147 ves_icall_System_Threading_Thread_ConstructInternalThread (MonoThread *this_obj)
1149 MonoInternalThread *internal;
1151 internal = create_internal_thread ();
1153 internal->state = ThreadState_Unstarted;
1155 InterlockedCompareExchangePointer ((volatile gpointer *)&this_obj->internal_thread, internal, NULL);
1159 ves_icall_System_Threading_Thread_Thread_internal (MonoThread *this_obj,
1163 StartInfo *start_info;
1164 MonoInternalThread *internal;
1167 THREAD_DEBUG (g_message("%s: Trying to start a new thread: this (%p) start (%p)", __func__, this_obj, start));
1169 if (!this_obj->internal_thread)
1170 ves_icall_System_Threading_Thread_ConstructInternalThread (this_obj);
1171 internal = this_obj->internal_thread;
1173 LOCK_THREAD (internal);
1175 if ((internal->state & ThreadState_Unstarted) == 0) {
1176 UNLOCK_THREAD (internal);
1177 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has already been started."));
1181 if ((internal->state & ThreadState_Aborted) != 0) {
1182 UNLOCK_THREAD (internal);
1185 /* This is freed in start_wrapper */
1186 start_info = g_new0 (StartInfo, 1);
1187 start_info->func = NULL;
1188 start_info->start_arg = NULL;
1189 start_info->delegate = start;
1190 start_info->obj = this_obj;
1191 g_assert (this_obj->obj.vtable->domain == mono_domain_get ());
1193 res = create_thread (this_obj, internal, start_info, FALSE, 0, &error);
1195 mono_error_cleanup (&error);
1196 UNLOCK_THREAD (internal);
1200 internal->state &= ~ThreadState_Unstarted;
1202 THREAD_DEBUG (g_message ("%s: Started thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread));
1204 UNLOCK_THREAD (internal);
1205 return internal->handle;
1209 * This is called from the finalizer of the internal thread object.
1212 ves_icall_System_Threading_InternalThread_Thread_free_internal (MonoInternalThread *this_obj, HANDLE thread)
1214 THREAD_DEBUG (g_message ("%s: Closing thread %p, handle %p", __func__, this, thread));
1217 * Since threads keep a reference to their thread object while running, by the time this function is called,
1218 * the thread has already exited/detached, i.e. thread_cleanup () has ran. The exception is during shutdown,
1219 * when thread_cleanup () can be called after this.
1222 CloseHandle (thread);
1224 if (this_obj->synch_cs) {
1225 MonoCoopMutex *synch_cs = this_obj->synch_cs;
1226 this_obj->synch_cs = NULL;
1227 mono_coop_mutex_destroy (synch_cs);
1231 if (this_obj->name) {
1232 void *name = this_obj->name;
1233 this_obj->name = NULL;
1239 ves_icall_System_Threading_Thread_Sleep_internal(gint32 ms)
1242 MonoInternalThread *thread = mono_thread_internal_current ();
1244 THREAD_DEBUG (g_message ("%s: Sleeping for %d ms", __func__, ms));
1246 if (mono_thread_current_check_pending_interrupt ())
1250 gboolean alerted = FALSE;
1252 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1254 res = mono_thread_info_sleep (ms, &alerted);
1256 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1259 MonoException* exc = mono_thread_execute_interruption ();
1261 mono_raise_exception (exc);
1273 void ves_icall_System_Threading_Thread_SpinWait_nop (void)
1278 ves_icall_System_Threading_Thread_GetDomainID (void)
1280 return mono_domain_get()->domain_id;
1284 ves_icall_System_Threading_Thread_Yield (void)
1286 return mono_thread_info_yield ();
1290 * mono_thread_get_name:
1292 * Return the name of the thread. NAME_LEN is set to the length of the name.
1293 * Return NULL if the thread has no name. The returned memory is owned by the
1297 mono_thread_get_name (MonoInternalThread *this_obj, guint32 *name_len)
1301 LOCK_THREAD (this_obj);
1303 if (!this_obj->name) {
1307 *name_len = this_obj->name_len;
1308 res = g_new (gunichar2, this_obj->name_len);
1309 memcpy (res, this_obj->name, sizeof (gunichar2) * this_obj->name_len);
1312 UNLOCK_THREAD (this_obj);
1318 * mono_thread_get_name_utf8:
1320 * Return the name of the thread in UTF-8.
1321 * Return NULL if the thread has no name.
1322 * The returned memory is owned by the caller.
1325 mono_thread_get_name_utf8 (MonoThread *thread)
1330 MonoInternalThread *internal = thread->internal_thread;
1331 if (internal == NULL)
1334 LOCK_THREAD (internal);
1336 char *tname = g_utf16_to_utf8 (internal->name, internal->name_len, NULL, NULL, NULL);
1338 UNLOCK_THREAD (internal);
1344 * mono_thread_get_managed_id:
1346 * Return the Thread.ManagedThreadId value of `thread`.
1347 * Returns -1 if `thread` is NULL.
1350 mono_thread_get_managed_id (MonoThread *thread)
1355 MonoInternalThread *internal = thread->internal_thread;
1356 if (internal == NULL)
1359 int32_t id = internal->managed_id;
1365 ves_icall_System_Threading_Thread_GetName_internal (MonoInternalThread *this_obj)
1370 mono_error_init (&error);
1372 LOCK_THREAD (this_obj);
1374 if (!this_obj->name)
1377 str = mono_string_new_utf16_checked (mono_domain_get (), this_obj->name, this_obj->name_len, &error);
1379 UNLOCK_THREAD (this_obj);
1381 if (mono_error_set_pending_exception (&error))
1388 mono_thread_set_name_internal (MonoInternalThread *this_obj, MonoString *name, gboolean permanent, MonoError *error)
1390 LOCK_THREAD (this_obj);
1392 mono_error_init (error);
1394 if ((this_obj->flags & MONO_THREAD_FLAG_NAME_SET)) {
1395 UNLOCK_THREAD (this_obj);
1397 mono_error_set_invalid_operation (error, "Thread.Name can only be set once.");
1400 if (this_obj->name) {
1401 g_free (this_obj->name);
1402 this_obj->name_len = 0;
1405 this_obj->name = g_new (gunichar2, mono_string_length (name));
1406 memcpy (this_obj->name, mono_string_chars (name), mono_string_length (name) * 2);
1407 this_obj->name_len = mono_string_length (name);
1410 this_obj->flags |= MONO_THREAD_FLAG_NAME_SET;
1413 this_obj->name = NULL;
1416 UNLOCK_THREAD (this_obj);
1418 if (this_obj->name && this_obj->tid) {
1419 char *tname = mono_string_to_utf8_checked (name, error);
1420 return_if_nok (error);
1421 mono_profiler_thread_name (this_obj->tid, tname);
1422 mono_native_thread_set_name (thread_get_tid (this_obj), tname);
1428 ves_icall_System_Threading_Thread_SetName_internal (MonoInternalThread *this_obj, MonoString *name)
1431 mono_thread_set_name_internal (this_obj, name, TRUE, &error);
1432 mono_error_set_pending_exception (&error);
1436 * ves_icall_System_Threading_Thread_GetPriority_internal:
1437 * @param this_obj: The MonoInternalThread on which to operate.
1439 * Gets the priority of the given thread.
1440 * @return: The priority of the given thread.
1443 ves_icall_System_Threading_Thread_GetPriority (MonoThread *this_obj)
1446 MonoInternalThread *internal = this_obj->internal_thread;
1448 LOCK_THREAD (internal);
1449 if (internal->handle != NULL)
1450 priority = mono_thread_info_get_priority ((MonoThreadInfo*) internal->thread_info);
1452 priority = this_obj->priority;
1453 UNLOCK_THREAD (internal);
1458 * ves_icall_System_Threading_Thread_SetPriority_internal:
1459 * @param this_obj: The MonoInternalThread on which to operate.
1460 * @param priority: The priority to set.
1462 * Sets the priority of the given thread.
1465 ves_icall_System_Threading_Thread_SetPriority (MonoThread *this_obj, int priority)
1467 MonoInternalThread *internal = this_obj->internal_thread;
1469 LOCK_THREAD (internal);
1470 this_obj->priority = priority;
1471 if (internal->handle != NULL)
1472 mono_thread_info_set_priority ((MonoThreadInfo*) internal->thread_info, this_obj->priority);
1473 UNLOCK_THREAD (internal);
1476 /* If the array is already in the requested domain, we just return it,
1477 otherwise we return a copy in that domain. */
1479 byte_array_to_domain (MonoArray *arr, MonoDomain *domain, MonoError *error)
1483 mono_error_init (error);
1487 if (mono_object_domain (arr) == domain)
1490 copy = mono_array_new_checked (domain, mono_defaults.byte_class, arr->max_length, error);
1491 memmove (mono_array_addr (copy, guint8, 0), mono_array_addr (arr, guint8, 0), arr->max_length);
1496 ves_icall_System_Threading_Thread_ByteArrayToRootDomain (MonoArray *arr)
1499 MonoArray *result = byte_array_to_domain (arr, mono_get_root_domain (), &error);
1500 mono_error_set_pending_exception (&error);
1505 ves_icall_System_Threading_Thread_ByteArrayToCurrentDomain (MonoArray *arr)
1508 MonoArray *result = byte_array_to_domain (arr, mono_domain_get (), &error);
1509 mono_error_set_pending_exception (&error);
1514 mono_thread_current (void)
1516 MonoDomain *domain = mono_domain_get ();
1517 MonoInternalThread *internal = mono_thread_internal_current ();
1518 MonoThread **current_thread_ptr;
1520 g_assert (internal);
1521 current_thread_ptr = get_current_thread_ptr_for_domain (domain, internal);
1523 if (!*current_thread_ptr) {
1524 g_assert (domain != mono_get_root_domain ());
1525 *current_thread_ptr = new_thread_with_internal (domain, internal);
1527 return *current_thread_ptr;
1530 /* Return the thread object belonging to INTERNAL in the current domain */
1532 mono_thread_current_for_thread (MonoInternalThread *internal)
1534 MonoDomain *domain = mono_domain_get ();
1535 MonoThread **current_thread_ptr;
1537 g_assert (internal);
1538 current_thread_ptr = get_current_thread_ptr_for_domain (domain, internal);
1540 if (!*current_thread_ptr) {
1541 g_assert (domain != mono_get_root_domain ());
1542 *current_thread_ptr = new_thread_with_internal (domain, internal);
1544 return *current_thread_ptr;
1548 mono_thread_internal_current (void)
1550 MonoInternalThread *res = GET_CURRENT_OBJECT ();
1551 THREAD_DEBUG (g_message ("%s: returning %p", __func__, res));
1556 ves_icall_System_Threading_Thread_Join_internal(MonoThread *this_obj, int ms)
1558 MonoInternalThread *thread = this_obj->internal_thread;
1559 HANDLE handle = thread->handle;
1560 MonoInternalThread *cur_thread = mono_thread_internal_current ();
1563 if (mono_thread_current_check_pending_interrupt ())
1566 LOCK_THREAD (thread);
1568 if ((thread->state & ThreadState_Unstarted) != 0) {
1569 UNLOCK_THREAD (thread);
1571 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started."));
1575 UNLOCK_THREAD (thread);
1580 THREAD_DEBUG (g_message ("%s: joining thread handle %p, %d ms", __func__, handle, ms));
1582 mono_thread_set_state (cur_thread, ThreadState_WaitSleepJoin);
1585 ret=WaitForSingleObjectEx (handle, ms, TRUE);
1588 mono_thread_clr_state (cur_thread, ThreadState_WaitSleepJoin);
1590 if(ret==WAIT_OBJECT_0) {
1591 THREAD_DEBUG (g_message ("%s: join successful", __func__));
1596 THREAD_DEBUG (g_message ("%s: join failed", __func__));
1601 #define MANAGED_WAIT_FAILED 0x7fffffff
1604 map_native_wait_result_to_managed (gint32 val)
1606 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1607 return val == WAIT_FAILED ? MANAGED_WAIT_FAILED : val;
1611 mono_wait_uninterrupted (MonoInternalThread *thread, guint32 numhandles, gpointer *handles, gboolean waitall, gint32 ms, MonoError *error)
1619 mono_error_init (error);
1621 start = (ms == -1) ? 0 : mono_100ns_ticks ();
1624 if (numhandles != 1)
1625 ret = WaitForMultipleObjectsEx (numhandles, handles, waitall, wait, TRUE);
1627 ret = WaitForSingleObjectEx (handles [0], ms, TRUE);
1630 if (ret != WAIT_IO_COMPLETION)
1633 exc = mono_thread_execute_interruption ();
1635 mono_error_set_exception_instance (error, exc);
1642 /* Re-calculate ms according to the time passed */
1643 diff_ms = (gint32)((mono_100ns_ticks () - start) / 10000);
1644 if (diff_ms >= ms) {
1648 wait = ms - diff_ms;
1654 gint32 ves_icall_System_Threading_WaitHandle_WaitAll_internal(MonoArray *mono_handles, gint32 ms)
1661 MonoObject *waitHandle;
1662 MonoInternalThread *thread = mono_thread_internal_current ();
1664 /* Do this WaitSleepJoin check before creating objects */
1665 if (mono_thread_current_check_pending_interrupt ())
1666 return map_native_wait_result_to_managed (WAIT_FAILED);
1668 /* We fail in managed if the array has more than 64 elements */
1669 numhandles = (guint32)mono_array_length(mono_handles);
1670 handles = g_new0(HANDLE, numhandles);
1672 for(i = 0; i < numhandles; i++) {
1673 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
1674 handles [i] = mono_wait_handle_get_handle ((MonoWaitHandle *) waitHandle);
1681 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1683 ret = mono_wait_uninterrupted (thread, numhandles, handles, TRUE, ms, &error);
1685 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1689 mono_error_set_pending_exception (&error);
1691 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1692 return map_native_wait_result_to_managed (ret);
1695 gint32 ves_icall_System_Threading_WaitHandle_WaitAny_internal(MonoArray *mono_handles, gint32 ms)
1698 HANDLE handles [MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
1699 uintptr_t numhandles;
1702 MonoObject *waitHandle;
1703 MonoInternalThread *thread = mono_thread_internal_current ();
1705 /* Do this WaitSleepJoin check before creating objects */
1706 if (mono_thread_current_check_pending_interrupt ())
1707 return map_native_wait_result_to_managed (WAIT_FAILED);
1709 numhandles = mono_array_length(mono_handles);
1710 if (numhandles > MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS)
1711 return map_native_wait_result_to_managed (WAIT_FAILED);
1713 for(i = 0; i < numhandles; i++) {
1714 waitHandle = mono_array_get(mono_handles, MonoObject*, i);
1715 handles [i] = mono_wait_handle_get_handle ((MonoWaitHandle *) waitHandle);
1722 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1724 ret = mono_wait_uninterrupted (thread, numhandles, handles, FALSE, ms, &error);
1726 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1728 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") returning %d", __func__, mono_native_thread_id_get (), ret));
1730 mono_error_set_pending_exception (&error);
1732 * These need to be here. See MSDN dos on WaitForMultipleObjects.
1734 if (ret >= WAIT_OBJECT_0 && ret <= WAIT_OBJECT_0 + numhandles - 1) {
1735 return map_native_wait_result_to_managed (ret - WAIT_OBJECT_0);
1737 else if (ret >= WAIT_ABANDONED_0 && ret <= WAIT_ABANDONED_0 + numhandles - 1) {
1738 return map_native_wait_result_to_managed (ret - WAIT_ABANDONED_0);
1741 /* WAIT_FAILED in waithandle.cs is different from WAIT_FAILED in Win32 API */
1742 return map_native_wait_result_to_managed (ret);
1746 gint32 ves_icall_System_Threading_WaitHandle_WaitOne_internal(HANDLE handle, gint32 ms)
1750 MonoInternalThread *thread = mono_thread_internal_current ();
1752 THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") waiting for %p, %d ms", __func__, mono_native_thread_id_get (), handle, ms));
1758 if (mono_thread_current_check_pending_interrupt ())
1759 return map_native_wait_result_to_managed (WAIT_FAILED);
1761 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1763 ret = mono_wait_uninterrupted (thread, 1, &handle, FALSE, ms, &error);
1765 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1767 mono_error_set_pending_exception (&error);
1768 return map_native_wait_result_to_managed (ret);
1772 ves_icall_System_Threading_WaitHandle_SignalAndWait_Internal (HANDLE toSignal, HANDLE toWait, gint32 ms)
1775 MonoInternalThread *thread = mono_thread_internal_current ();
1780 if (mono_thread_current_check_pending_interrupt ())
1781 return map_native_wait_result_to_managed (WAIT_FAILED);
1783 mono_thread_set_state (thread, ThreadState_WaitSleepJoin);
1786 ret = SignalObjectAndWait (toSignal, toWait, ms, TRUE);
1789 mono_thread_clr_state (thread, ThreadState_WaitSleepJoin);
1791 return map_native_wait_result_to_managed (ret);
1794 HANDLE ves_icall_System_Threading_Mutex_CreateMutex_internal (MonoBoolean owned, MonoString *name, MonoBoolean *created)
1801 mutex = CreateMutex (NULL, owned, NULL);
1803 mutex = CreateMutex (NULL, owned, mono_string_chars (name));
1805 if (GetLastError () == ERROR_ALREADY_EXISTS) {
1813 MonoBoolean ves_icall_System_Threading_Mutex_ReleaseMutex_internal (HANDLE handle ) {
1814 return(ReleaseMutex (handle));
1817 HANDLE ves_icall_System_Threading_Mutex_OpenMutex_internal (MonoString *name,
1823 *error = ERROR_SUCCESS;
1825 ret = OpenMutex (rights, FALSE, mono_string_chars (name));
1827 *error = GetLastError ();
1834 HANDLE ves_icall_System_Threading_Semaphore_CreateSemaphore_internal (gint32 initialCount, gint32 maximumCount, MonoString *name, gint32 *error)
1839 sem = CreateSemaphore (NULL, initialCount, maximumCount, NULL);
1841 sem = CreateSemaphore (NULL, initialCount, maximumCount,
1842 mono_string_chars (name));
1845 *error = GetLastError ();
1849 MonoBoolean ves_icall_System_Threading_Semaphore_ReleaseSemaphore_internal (HANDLE handle, gint32 releaseCount, gint32 *prevcount)
1851 return ReleaseSemaphore (handle, releaseCount, prevcount);
1854 HANDLE ves_icall_System_Threading_Semaphore_OpenSemaphore_internal (MonoString *name, gint32 rights, gint32 *error)
1858 sem = OpenSemaphore (rights, FALSE, mono_string_chars (name));
1859 *error = GetLastError ();
1864 HANDLE ves_icall_System_Threading_Events_CreateEvent_internal (MonoBoolean manual, MonoBoolean initial, MonoString *name, MonoBoolean *created)
1871 event = CreateEvent (NULL, manual, initial, NULL);
1873 event = CreateEvent (NULL, manual, initial,
1874 mono_string_chars (name));
1876 if (GetLastError () == ERROR_ALREADY_EXISTS) {
1884 gboolean ves_icall_System_Threading_Events_SetEvent_internal (HANDLE handle) {
1885 return (SetEvent(handle));
1888 gboolean ves_icall_System_Threading_Events_ResetEvent_internal (HANDLE handle) {
1889 return (ResetEvent(handle));
1893 ves_icall_System_Threading_Events_CloseEvent_internal (HANDLE handle) {
1894 CloseHandle (handle);
1897 HANDLE ves_icall_System_Threading_Events_OpenEvent_internal (MonoString *name,
1903 *error = ERROR_SUCCESS;
1905 ret = OpenEvent (rights, FALSE, mono_string_chars (name));
1907 *error = GetLastError ();
1913 gint32 ves_icall_System_Threading_Interlocked_Increment_Int (gint32 *location)
1915 return InterlockedIncrement (location);
1918 gint64 ves_icall_System_Threading_Interlocked_Increment_Long (gint64 *location)
1920 #if SIZEOF_VOID_P == 4
1921 if (G_UNLIKELY ((size_t)location & 0x7)) {
1923 mono_interlocked_lock ();
1926 mono_interlocked_unlock ();
1930 return InterlockedIncrement64 (location);
1933 gint32 ves_icall_System_Threading_Interlocked_Decrement_Int (gint32 *location)
1935 return InterlockedDecrement(location);
1938 gint64 ves_icall_System_Threading_Interlocked_Decrement_Long (gint64 * location)
1940 #if SIZEOF_VOID_P == 4
1941 if (G_UNLIKELY ((size_t)location & 0x7)) {
1943 mono_interlocked_lock ();
1946 mono_interlocked_unlock ();
1950 return InterlockedDecrement64 (location);
1953 gint32 ves_icall_System_Threading_Interlocked_Exchange_Int (gint32 *location, gint32 value)
1955 return InterlockedExchange(location, value);
1958 MonoObject * ves_icall_System_Threading_Interlocked_Exchange_Object (MonoObject **location, MonoObject *value)
1961 res = (MonoObject *) InterlockedExchangePointer((gpointer *) location, value);
1962 mono_gc_wbarrier_generic_nostore (location);
1966 gpointer ves_icall_System_Threading_Interlocked_Exchange_IntPtr (gpointer *location, gpointer value)
1968 return InterlockedExchangePointer(location, value);
1971 gfloat ves_icall_System_Threading_Interlocked_Exchange_Single (gfloat *location, gfloat value)
1973 IntFloatUnion val, ret;
1976 ret.ival = InterlockedExchange((gint32 *) location, val.ival);
1982 ves_icall_System_Threading_Interlocked_Exchange_Long (gint64 *location, gint64 value)
1984 #if SIZEOF_VOID_P == 4
1985 if (G_UNLIKELY ((size_t)location & 0x7)) {
1987 mono_interlocked_lock ();
1990 mono_interlocked_unlock ();
1994 return InterlockedExchange64 (location, value);
1998 ves_icall_System_Threading_Interlocked_Exchange_Double (gdouble *location, gdouble value)
2000 LongDoubleUnion val, ret;
2003 ret.ival = (gint64)InterlockedExchange64((gint64 *) location, val.ival);
2008 gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int(gint32 *location, gint32 value, gint32 comparand)
2010 return InterlockedCompareExchange(location, value, comparand);
2013 gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int_Success(gint32 *location, gint32 value, gint32 comparand, MonoBoolean *success)
2015 gint32 r = InterlockedCompareExchange(location, value, comparand);
2016 *success = r == comparand;
2020 MonoObject * ves_icall_System_Threading_Interlocked_CompareExchange_Object (MonoObject **location, MonoObject *value, MonoObject *comparand)
2023 res = (MonoObject *) InterlockedCompareExchangePointer((gpointer *) location, value, comparand);
2024 mono_gc_wbarrier_generic_nostore (location);
2028 gpointer ves_icall_System_Threading_Interlocked_CompareExchange_IntPtr(gpointer *location, gpointer value, gpointer comparand)
2030 return InterlockedCompareExchangePointer(location, value, comparand);
2033 gfloat ves_icall_System_Threading_Interlocked_CompareExchange_Single (gfloat *location, gfloat value, gfloat comparand)
2035 IntFloatUnion val, ret, cmp;
2038 cmp.fval = comparand;
2039 ret.ival = InterlockedCompareExchange((gint32 *) location, val.ival, cmp.ival);
2045 ves_icall_System_Threading_Interlocked_CompareExchange_Double (gdouble *location, gdouble value, gdouble comparand)
2047 #if SIZEOF_VOID_P == 8
2048 LongDoubleUnion val, comp, ret;
2051 comp.fval = comparand;
2052 ret.ival = (gint64)InterlockedCompareExchangePointer((gpointer *) location, (gpointer)val.ival, (gpointer)comp.ival);
2058 mono_interlocked_lock ();
2060 if (old == comparand)
2062 mono_interlocked_unlock ();
2069 ves_icall_System_Threading_Interlocked_CompareExchange_Long (gint64 *location, gint64 value, gint64 comparand)
2071 #if SIZEOF_VOID_P == 4
2072 if (G_UNLIKELY ((size_t)location & 0x7)) {
2074 mono_interlocked_lock ();
2076 if (old == comparand)
2078 mono_interlocked_unlock ();
2082 return InterlockedCompareExchange64 (location, value, comparand);
2086 ves_icall_System_Threading_Interlocked_CompareExchange_T (MonoObject **location, MonoObject *value, MonoObject *comparand)
2089 res = (MonoObject *)InterlockedCompareExchangePointer ((volatile gpointer *)location, value, comparand);
2090 mono_gc_wbarrier_generic_nostore (location);
2095 ves_icall_System_Threading_Interlocked_Exchange_T (MonoObject **location, MonoObject *value)
2098 MONO_CHECK_NULL (location, NULL);
2099 res = (MonoObject *)InterlockedExchangePointer ((volatile gpointer *)location, value);
2100 mono_gc_wbarrier_generic_nostore (location);
2105 ves_icall_System_Threading_Interlocked_Add_Int (gint32 *location, gint32 value)
2107 return InterlockedAdd (location, value);
2111 ves_icall_System_Threading_Interlocked_Add_Long (gint64 *location, gint64 value)
2113 #if SIZEOF_VOID_P == 4
2114 if (G_UNLIKELY ((size_t)location & 0x7)) {
2116 mono_interlocked_lock ();
2119 mono_interlocked_unlock ();
2123 return InterlockedAdd64 (location, value);
2127 ves_icall_System_Threading_Interlocked_Read_Long (gint64 *location)
2129 #if SIZEOF_VOID_P == 4
2130 if (G_UNLIKELY ((size_t)location & 0x7)) {
2132 mono_interlocked_lock ();
2134 mono_interlocked_unlock ();
2138 return InterlockedRead64 (location);
2142 ves_icall_System_Threading_Thread_MemoryBarrier (void)
2144 mono_memory_barrier ();
2148 ves_icall_System_Threading_Thread_ClrState (MonoInternalThread* this_obj, guint32 state)
2150 mono_thread_clr_state (this_obj, (MonoThreadState)state);
2152 if (state & ThreadState_Background) {
2153 /* If the thread changes the background mode, the main thread has to
2154 * be notified, since it has to rebuild the list of threads to
2157 SetEvent (background_change_event);
2162 ves_icall_System_Threading_Thread_SetState (MonoInternalThread* this_obj, guint32 state)
2164 mono_thread_set_state (this_obj, (MonoThreadState)state);
2166 if (state & ThreadState_Background) {
2167 /* If the thread changes the background mode, the main thread has to
2168 * be notified, since it has to rebuild the list of threads to
2171 SetEvent (background_change_event);
2176 ves_icall_System_Threading_Thread_GetState (MonoInternalThread* this_obj)
2180 LOCK_THREAD (this_obj);
2182 state = this_obj->state;
2184 UNLOCK_THREAD (this_obj);
2189 void ves_icall_System_Threading_Thread_Interrupt_internal (MonoThread *this_obj)
2191 MonoInternalThread *current;
2193 MonoInternalThread *thread = this_obj->internal_thread;
2195 LOCK_THREAD (thread);
2197 current = mono_thread_internal_current ();
2199 thread->thread_interrupt_requested = TRUE;
2200 throw_ = current != thread && (thread->state & ThreadState_WaitSleepJoin);
2202 UNLOCK_THREAD (thread);
2205 async_abort_internal (thread, FALSE);
2210 * mono_thread_current_check_pending_interrupt:
2212 * Checks if there's a interruption request and set the pending exception if so.
2214 * @returns true if a pending exception was set
2217 mono_thread_current_check_pending_interrupt (void)
2219 MonoInternalThread *thread = mono_thread_internal_current ();
2220 gboolean throw_ = FALSE;
2222 LOCK_THREAD (thread);
2224 if (thread->thread_interrupt_requested) {
2226 thread->thread_interrupt_requested = FALSE;
2229 UNLOCK_THREAD (thread);
2232 mono_set_pending_exception (mono_get_exception_thread_interrupted ());
2237 request_thread_abort (MonoInternalThread *thread, MonoObject *state)
2239 LOCK_THREAD (thread);
2241 if ((thread->state & ThreadState_AbortRequested) != 0 ||
2242 (thread->state & ThreadState_StopRequested) != 0 ||
2243 (thread->state & ThreadState_Stopped) != 0)
2245 UNLOCK_THREAD (thread);
2249 if ((thread->state & ThreadState_Unstarted) != 0) {
2250 thread->state |= ThreadState_Aborted;
2251 UNLOCK_THREAD (thread);
2255 thread->state |= ThreadState_AbortRequested;
2256 if (thread->abort_state_handle)
2257 mono_gchandle_free (thread->abort_state_handle);
2259 thread->abort_state_handle = mono_gchandle_new (state, FALSE);
2260 g_assert (thread->abort_state_handle);
2262 thread->abort_state_handle = 0;
2264 thread->abort_exc = NULL;
2266 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));
2268 /* During shutdown, we can't wait for other threads */
2270 /* Make sure the thread is awake */
2271 mono_thread_resume (thread);
2273 UNLOCK_THREAD (thread);
2278 ves_icall_System_Threading_Thread_Abort (MonoInternalThread *thread, MonoObject *state)
2280 if (!request_thread_abort (thread, state))
2283 if (thread == mono_thread_internal_current ()) {
2285 self_abort_internal (&error);
2286 mono_error_set_pending_exception (&error);
2288 async_abort_internal (thread, TRUE);
2293 * mono_thread_internal_abort:
2295 * Request thread @thread to be aborted.
2297 * @thread MUST NOT be the current thread.
2300 mono_thread_internal_abort (MonoInternalThread *thread)
2302 g_assert (thread != mono_thread_internal_current ());
2304 if (!request_thread_abort (thread, NULL))
2306 async_abort_internal (thread, TRUE);
2310 ves_icall_System_Threading_Thread_ResetAbort (MonoThread *this_obj)
2312 MonoInternalThread *thread = mono_thread_internal_current ();
2313 gboolean was_aborting;
2315 LOCK_THREAD (thread);
2316 was_aborting = thread->state & ThreadState_AbortRequested;
2317 thread->state &= ~ThreadState_AbortRequested;
2318 UNLOCK_THREAD (thread);
2320 if (!was_aborting) {
2321 const char *msg = "Unable to reset abort because no abort was requested";
2322 mono_set_pending_exception (mono_get_exception_thread_state (msg));
2325 thread->abort_exc = NULL;
2326 if (thread->abort_state_handle) {
2327 mono_gchandle_free (thread->abort_state_handle);
2328 /* This is actually not necessary - the handle
2329 only counts if the exception is set */
2330 thread->abort_state_handle = 0;
2335 mono_thread_internal_reset_abort (MonoInternalThread *thread)
2337 LOCK_THREAD (thread);
2339 thread->state &= ~ThreadState_AbortRequested;
2341 if (thread->abort_exc) {
2342 thread->abort_exc = NULL;
2343 if (thread->abort_state_handle) {
2344 mono_gchandle_free (thread->abort_state_handle);
2345 /* This is actually not necessary - the handle
2346 only counts if the exception is set */
2347 thread->abort_state_handle = 0;
2351 UNLOCK_THREAD (thread);
2355 ves_icall_System_Threading_Thread_GetAbortExceptionState (MonoThread *this_obj)
2358 MonoInternalThread *thread = this_obj->internal_thread;
2359 MonoObject *state, *deserialized = NULL;
2362 if (!thread->abort_state_handle)
2365 state = mono_gchandle_get_target (thread->abort_state_handle);
2368 domain = mono_domain_get ();
2369 if (mono_object_domain (state) == domain)
2372 deserialized = mono_object_xdomain_representation (state, domain, &error);
2374 if (!deserialized) {
2375 MonoException *invalid_op_exc = mono_get_exception_invalid_operation ("Thread.ExceptionState cannot access an ExceptionState from a different AppDomain");
2376 if (!is_ok (&error)) {
2377 MonoObject *exc = (MonoObject*)mono_error_convert_to_exception (&error);
2378 MONO_OBJECT_SETREF (invalid_op_exc, inner_ex, exc);
2380 mono_set_pending_exception (invalid_op_exc);
2384 return deserialized;
2388 mono_thread_suspend (MonoInternalThread *thread)
2390 LOCK_THREAD (thread);
2392 if ((thread->state & ThreadState_Unstarted) != 0 ||
2393 (thread->state & ThreadState_Aborted) != 0 ||
2394 (thread->state & ThreadState_Stopped) != 0)
2396 UNLOCK_THREAD (thread);
2400 if ((thread->state & ThreadState_Suspended) != 0 ||
2401 (thread->state & ThreadState_SuspendRequested) != 0 ||
2402 (thread->state & ThreadState_StopRequested) != 0)
2404 UNLOCK_THREAD (thread);
2408 thread->state |= ThreadState_SuspendRequested;
2410 if (thread == mono_thread_internal_current ()) {
2411 /* calls UNLOCK_THREAD (thread) */
2412 self_suspend_internal ();
2414 /* calls UNLOCK_THREAD (thread) */
2415 async_suspend_internal (thread, FALSE);
2422 ves_icall_System_Threading_Thread_Suspend (MonoThread *this_obj)
2424 if (!mono_thread_suspend (this_obj->internal_thread)) {
2425 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2430 /* LOCKING: LOCK_THREAD(thread) must be held */
2432 mono_thread_resume (MonoInternalThread *thread)
2434 if ((thread->state & ThreadState_SuspendRequested) != 0) {
2435 thread->state &= ~ThreadState_SuspendRequested;
2439 if ((thread->state & ThreadState_Suspended) == 0 ||
2440 (thread->state & ThreadState_Unstarted) != 0 ||
2441 (thread->state & ThreadState_Aborted) != 0 ||
2442 (thread->state & ThreadState_Stopped) != 0)
2447 UNLOCK_THREAD (thread);
2449 /* Awake the thread */
2450 if (!mono_thread_info_resume (thread_get_tid (thread)))
2453 LOCK_THREAD (thread);
2455 thread->state &= ~ThreadState_Suspended;
2461 ves_icall_System_Threading_Thread_Resume (MonoThread *thread)
2463 if (!thread->internal_thread) {
2464 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2466 LOCK_THREAD (thread->internal_thread);
2467 if (!mono_thread_resume (thread->internal_thread))
2468 mono_set_pending_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
2469 UNLOCK_THREAD (thread->internal_thread);
2474 mono_threads_is_critical_method (MonoMethod *method)
2476 switch (method->wrapper_type) {
2477 case MONO_WRAPPER_RUNTIME_INVOKE:
2478 case MONO_WRAPPER_XDOMAIN_INVOKE:
2479 case MONO_WRAPPER_XDOMAIN_DISPATCH:
2486 find_wrapper (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
2491 if (mono_threads_is_critical_method (m)) {
2492 *((gboolean*)data) = TRUE;
2499 is_running_protected_wrapper (void)
2501 gboolean found = FALSE;
2502 mono_stack_walk (find_wrapper, &found);
2507 request_thread_stop (MonoInternalThread *thread)
2509 LOCK_THREAD (thread);
2511 if ((thread->state & ThreadState_StopRequested) != 0 ||
2512 (thread->state & ThreadState_Stopped) != 0)
2514 UNLOCK_THREAD (thread);
2518 /* Make sure the thread is awake */
2519 mono_thread_resume (thread);
2521 thread->state |= ThreadState_StopRequested;
2522 thread->state &= ~ThreadState_AbortRequested;
2524 UNLOCK_THREAD (thread);
2529 * mono_thread_internal_stop:
2531 * Request thread @thread to stop.
2533 * @thread MUST NOT be the current thread.
2536 mono_thread_internal_stop (MonoInternalThread *thread)
2538 g_assert (thread != mono_thread_internal_current ());
2540 if (!request_thread_stop (thread))
2543 async_abort_internal (thread, TRUE);
2546 void mono_thread_stop (MonoThread *thread)
2548 MonoInternalThread *internal = thread->internal_thread;
2550 if (!request_thread_stop (internal))
2553 if (internal == mono_thread_internal_current ()) {
2555 self_abort_internal (&error);
2557 This function is part of the embeding API and has no way to return the exception
2558 to be thrown. So what we do is keep the old behavior and raise the exception.
2560 mono_error_raise_exception (&error); /* OK to throw, see note */
2562 async_abort_internal (internal, TRUE);
2567 ves_icall_System_Threading_Thread_VolatileRead1 (void *ptr)
2569 gint8 tmp = *(volatile gint8 *)ptr;
2570 mono_memory_barrier ();
2575 ves_icall_System_Threading_Thread_VolatileRead2 (void *ptr)
2577 gint16 tmp = *(volatile gint16 *)ptr;
2578 mono_memory_barrier ();
2583 ves_icall_System_Threading_Thread_VolatileRead4 (void *ptr)
2585 gint32 tmp = *(volatile gint32 *)ptr;
2586 mono_memory_barrier ();
2591 ves_icall_System_Threading_Thread_VolatileRead8 (void *ptr)
2593 gint64 tmp = *(volatile gint64 *)ptr;
2594 mono_memory_barrier ();
2599 ves_icall_System_Threading_Thread_VolatileReadIntPtr (void *ptr)
2601 volatile void *tmp = *(volatile void **)ptr;
2602 mono_memory_barrier ();
2603 return (void *) tmp;
2607 ves_icall_System_Threading_Thread_VolatileReadObject (void *ptr)
2609 volatile MonoObject *tmp = *(volatile MonoObject **)ptr;
2610 mono_memory_barrier ();
2611 return (MonoObject *) tmp;
2615 ves_icall_System_Threading_Thread_VolatileReadDouble (void *ptr)
2617 double tmp = *(volatile double *)ptr;
2618 mono_memory_barrier ();
2623 ves_icall_System_Threading_Thread_VolatileReadFloat (void *ptr)
2625 float tmp = *(volatile float *)ptr;
2626 mono_memory_barrier ();
2631 ves_icall_System_Threading_Volatile_Read1 (void *ptr)
2633 return InterlockedRead8 ((volatile gint8 *)ptr);
2637 ves_icall_System_Threading_Volatile_Read2 (void *ptr)
2639 return InterlockedRead16 ((volatile gint16 *)ptr);
2643 ves_icall_System_Threading_Volatile_Read4 (void *ptr)
2645 return InterlockedRead ((volatile gint32 *)ptr);
2649 ves_icall_System_Threading_Volatile_Read8 (void *ptr)
2651 #if SIZEOF_VOID_P == 4
2652 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2654 mono_interlocked_lock ();
2655 val = *(gint64*)ptr;
2656 mono_interlocked_unlock ();
2660 return InterlockedRead64 ((volatile gint64 *)ptr);
2664 ves_icall_System_Threading_Volatile_ReadIntPtr (void *ptr)
2666 return InterlockedReadPointer ((volatile gpointer *)ptr);
2670 ves_icall_System_Threading_Volatile_ReadDouble (void *ptr)
2674 #if SIZEOF_VOID_P == 4
2675 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2677 mono_interlocked_lock ();
2678 val = *(double*)ptr;
2679 mono_interlocked_unlock ();
2684 u.ival = InterlockedRead64 ((volatile gint64 *)ptr);
2690 ves_icall_System_Threading_Volatile_ReadFloat (void *ptr)
2694 u.ival = InterlockedRead ((volatile gint32 *)ptr);
2700 ves_icall_System_Threading_Volatile_Read_T (void *ptr)
2702 return (MonoObject *)InterlockedReadPointer ((volatile gpointer *)ptr);
2706 ves_icall_System_Threading_Thread_VolatileWrite1 (void *ptr, gint8 value)
2708 mono_memory_barrier ();
2709 *(volatile gint8 *)ptr = value;
2713 ves_icall_System_Threading_Thread_VolatileWrite2 (void *ptr, gint16 value)
2715 mono_memory_barrier ();
2716 *(volatile gint16 *)ptr = value;
2720 ves_icall_System_Threading_Thread_VolatileWrite4 (void *ptr, gint32 value)
2722 mono_memory_barrier ();
2723 *(volatile gint32 *)ptr = value;
2727 ves_icall_System_Threading_Thread_VolatileWrite8 (void *ptr, gint64 value)
2729 mono_memory_barrier ();
2730 *(volatile gint64 *)ptr = value;
2734 ves_icall_System_Threading_Thread_VolatileWriteIntPtr (void *ptr, void *value)
2736 mono_memory_barrier ();
2737 *(volatile void **)ptr = value;
2741 ves_icall_System_Threading_Thread_VolatileWriteObject (void *ptr, MonoObject *value)
2743 mono_memory_barrier ();
2744 mono_gc_wbarrier_generic_store (ptr, value);
2748 ves_icall_System_Threading_Thread_VolatileWriteDouble (void *ptr, double value)
2750 mono_memory_barrier ();
2751 *(volatile double *)ptr = value;
2755 ves_icall_System_Threading_Thread_VolatileWriteFloat (void *ptr, float value)
2757 mono_memory_barrier ();
2758 *(volatile float *)ptr = value;
2762 ves_icall_System_Threading_Volatile_Write1 (void *ptr, gint8 value)
2764 InterlockedWrite8 ((volatile gint8 *)ptr, value);
2768 ves_icall_System_Threading_Volatile_Write2 (void *ptr, gint16 value)
2770 InterlockedWrite16 ((volatile gint16 *)ptr, value);
2774 ves_icall_System_Threading_Volatile_Write4 (void *ptr, gint32 value)
2776 InterlockedWrite ((volatile gint32 *)ptr, value);
2780 ves_icall_System_Threading_Volatile_Write8 (void *ptr, gint64 value)
2782 #if SIZEOF_VOID_P == 4
2783 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2784 mono_interlocked_lock ();
2785 *(gint64*)ptr = value;
2786 mono_interlocked_unlock ();
2791 InterlockedWrite64 ((volatile gint64 *)ptr, value);
2795 ves_icall_System_Threading_Volatile_WriteIntPtr (void *ptr, void *value)
2797 InterlockedWritePointer ((volatile gpointer *)ptr, value);
2801 ves_icall_System_Threading_Volatile_WriteDouble (void *ptr, double value)
2805 #if SIZEOF_VOID_P == 4
2806 if (G_UNLIKELY ((size_t)ptr & 0x7)) {
2807 mono_interlocked_lock ();
2808 *(double*)ptr = value;
2809 mono_interlocked_unlock ();
2816 InterlockedWrite64 ((volatile gint64 *)ptr, u.ival);
2820 ves_icall_System_Threading_Volatile_WriteFloat (void *ptr, float value)
2826 InterlockedWrite ((volatile gint32 *)ptr, u.ival);
2830 ves_icall_System_Threading_Volatile_Write_T (void *ptr, MonoObject *value)
2832 mono_gc_wbarrier_generic_store_atomic (ptr, value);
2836 free_context (void *user_data)
2838 ContextStaticData *data = user_data;
2840 mono_threads_lock ();
2843 * There is no guarantee that, by the point this reference queue callback
2844 * has been invoked, the GC handle associated with the object will fail to
2845 * resolve as one might expect. So if we don't free and remove the GC
2846 * handle here, free_context_static_data_helper () could end up resolving
2847 * a GC handle to an actually-dead context which would contain a pointer
2848 * to an already-freed static data segment, resulting in a crash when
2851 g_hash_table_remove (contexts, GUINT_TO_POINTER (data->gc_handle));
2853 mono_threads_unlock ();
2855 mono_gchandle_free (data->gc_handle);
2856 mono_free_static_data (data->static_data);
2861 ves_icall_System_Runtime_Remoting_Contexts_Context_RegisterContext (MonoAppContext *ctx)
2863 mono_threads_lock ();
2865 //g_print ("Registering context %d in domain %d\n", ctx->context_id, ctx->domain_id);
2868 contexts = g_hash_table_new (NULL, NULL);
2871 context_queue = mono_gc_reference_queue_new (free_context);
2873 gpointer gch = GUINT_TO_POINTER (mono_gchandle_new_weakref (&ctx->obj, FALSE));
2874 g_hash_table_insert (contexts, gch, gch);
2877 * We use this intermediate structure to contain a duplicate pointer to
2878 * the static data because we can't rely on being able to resolve the GC
2879 * handle in the reference queue callback.
2881 ContextStaticData *data = g_new0 (ContextStaticData, 1);
2882 data->gc_handle = GPOINTER_TO_UINT (gch);
2885 context_adjust_static_data (ctx);
2886 mono_gc_reference_queue_add (context_queue, &ctx->obj, data);
2888 mono_threads_unlock ();
2890 mono_profiler_context_loaded (ctx);
2894 ves_icall_System_Runtime_Remoting_Contexts_Context_ReleaseContext (MonoAppContext *ctx)
2897 * NOTE: Since finalizers are unreliable for the purposes of ensuring
2898 * cleanup in exceptional circumstances, we don't actually do any
2899 * cleanup work here. We instead do this via a reference queue.
2902 //g_print ("Releasing context %d in domain %d\n", ctx->context_id, ctx->domain_id);
2904 mono_profiler_context_unloaded (ctx);
2908 mono_thread_init_tls (void)
2910 MONO_FAST_TLS_INIT (tls_current_object);
2911 mono_native_tls_alloc (¤t_object_key, NULL);
2914 void mono_thread_init (MonoThreadStartCB start_cb,
2915 MonoThreadAttachCB attach_cb)
2917 mono_coop_mutex_init_recursive (&threads_mutex);
2919 mono_os_mutex_init_recursive(&interlocked_mutex);
2920 mono_os_mutex_init_recursive(&joinable_threads_mutex);
2922 background_change_event = CreateEvent (NULL, TRUE, FALSE, NULL);
2923 g_assert(background_change_event != NULL);
2925 mono_init_static_data_info (&thread_static_info);
2926 mono_init_static_data_info (&context_static_info);
2928 THREAD_DEBUG (g_message ("%s: Allocated current_object_key %d", __func__, current_object_key));
2930 mono_thread_start_cb = start_cb;
2931 mono_thread_attach_cb = attach_cb;
2933 /* Get a pseudo handle to the current process. This is just a
2934 * kludge so that wapi can build a process handle if needed.
2935 * As a pseudo handle is returned, we don't need to clean
2938 GetCurrentProcess ();
2941 void mono_thread_cleanup (void)
2943 #if !defined(RUN_IN_SUBTHREAD)
2944 /* The main thread must abandon any held mutexes (particularly
2945 * important for named mutexes as they are shared across
2946 * processes, see bug 74680.) This will happen when the
2947 * thread exits, but if it's not running in a subthread it
2948 * won't exit in time.
2950 mono_thread_info_set_exited (mono_thread_info_current ());
2954 /* This stuff needs more testing, it seems one of these
2955 * critical sections can be locked when mono_thread_cleanup is
2958 mono_coop_mutex_destroy (&threads_mutex);
2959 mono_os_mutex_destroy (&interlocked_mutex);
2960 mono_os_mutex_destroy (&delayed_free_table_mutex);
2961 mono_os_mutex_destroy (&small_id_mutex);
2962 CloseHandle (background_change_event);
2965 mono_native_tls_free (current_object_key);
2969 mono_threads_install_cleanup (MonoThreadCleanupFunc func)
2971 mono_thread_cleanup_fn = func;
2975 mono_thread_set_manage_callback (MonoThread *thread, MonoThreadManageCallback func)
2977 thread->internal_thread->manage_callback = func;
2981 static void print_tids (gpointer key, gpointer value, gpointer user)
2983 /* GPOINTER_TO_UINT breaks horribly if sizeof(void *) >
2984 * sizeof(uint) and a cast to uint would overflow
2986 /* Older versions of glib don't have G_GSIZE_FORMAT, so just
2987 * print this as a pointer.
2989 g_message ("Waiting for: %p", key);
2994 HANDLE handles[MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
2995 MonoInternalThread *threads[MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS];
2999 static void wait_for_tids (struct wait_data *wait, guint32 timeout)
3003 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
3006 ret=WaitForMultipleObjectsEx(wait->num, wait->handles, TRUE, timeout, TRUE);
3009 if(ret==WAIT_FAILED) {
3010 /* See the comment in build_wait_tids() */
3011 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
3015 for(i=0; i<wait->num; i++)
3016 CloseHandle (wait->handles[i]);
3018 if (ret == WAIT_TIMEOUT)
3021 for(i=0; i<wait->num; i++) {
3022 gsize tid = wait->threads[i]->tid;
3025 * On !win32, when the thread handle becomes signalled, it just means the thread has exited user code,
3026 * it can still run io-layer etc. code. So wait for it to really exit.
3027 * FIXME: This won't join threads which are not in the joinable_hash yet.
3029 mono_thread_join ((gpointer)tid);
3031 mono_threads_lock ();
3032 if(mono_g_hash_table_lookup (threads, (gpointer)tid)!=NULL) {
3033 /* This thread must have been killed, because
3034 * it hasn't cleaned itself up. (It's just
3035 * possible that the thread exited before the
3036 * parent thread had a chance to store the
3037 * handle, and now there is another pointer to
3038 * the already-exited thread stored. In this
3039 * case, we'll just get two
3040 * mono_profiler_thread_end() calls for the
3044 mono_threads_unlock ();
3045 THREAD_DEBUG (g_message ("%s: cleaning up after thread %p (%"G_GSIZE_FORMAT")", __func__, wait->threads[i], tid));
3046 thread_cleanup (wait->threads[i]);
3048 mono_threads_unlock ();
3053 static void wait_for_tids_or_state_change (struct wait_data *wait, guint32 timeout)
3055 guint32 i, ret, count;
3057 THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
3059 /* Add the thread state change event, so it wakes up if a thread changes
3060 * to background mode.
3063 if (count < MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS) {
3064 wait->handles [count] = background_change_event;
3069 ret=WaitForMultipleObjectsEx (count, wait->handles, FALSE, timeout, TRUE);
3072 if(ret==WAIT_FAILED) {
3073 /* See the comment in build_wait_tids() */
3074 THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
3078 for(i=0; i<wait->num; i++)
3079 CloseHandle (wait->handles[i]);
3081 if (ret == WAIT_TIMEOUT)
3084 if (ret < wait->num) {
3085 gsize tid = wait->threads[ret]->tid;
3086 mono_threads_lock ();
3087 if (mono_g_hash_table_lookup (threads, (gpointer)tid)!=NULL) {
3088 /* See comment in wait_for_tids about thread cleanup */
3089 mono_threads_unlock ();
3090 THREAD_DEBUG (g_message ("%s: cleaning up after thread %"G_GSIZE_FORMAT, __func__, tid));
3091 thread_cleanup (wait->threads [ret]);
3093 mono_threads_unlock ();
3097 static void build_wait_tids (gpointer key, gpointer value, gpointer user)
3099 struct wait_data *wait=(struct wait_data *)user;
3101 if(wait->num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS) {
3103 MonoInternalThread *thread=(MonoInternalThread *)value;
3105 /* Ignore background threads, we abort them later */
3106 /* Do not lock here since it is not needed and the caller holds threads_lock */
3107 if (thread->state & ThreadState_Background) {
3108 THREAD_DEBUG (g_message ("%s: ignoring background thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3109 return; /* just leave, ignore */
3112 if (mono_gc_is_finalizer_internal_thread (thread)) {
3113 THREAD_DEBUG (g_message ("%s: ignoring finalizer thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3117 if (thread == mono_thread_internal_current ()) {
3118 THREAD_DEBUG (g_message ("%s: ignoring current thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3122 if (mono_thread_get_main () && (thread == mono_thread_get_main ()->internal_thread)) {
3123 THREAD_DEBUG (g_message ("%s: ignoring main thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3127 if (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE) {
3128 THREAD_DEBUG (g_message ("%s: ignoring thread %" G_GSIZE_FORMAT "with DONT_MANAGE flag set.", __func__, (gsize)thread->tid));
3132 handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3133 if (handle == NULL) {
3134 THREAD_DEBUG (g_message ("%s: ignoring unopenable thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3138 THREAD_DEBUG (g_message ("%s: Invoking mono_thread_manage callback on thread %p", __func__, thread));
3139 if ((thread->manage_callback == NULL) || (thread->manage_callback (thread->root_domain_thread) == TRUE)) {
3140 wait->handles[wait->num]=handle;
3141 wait->threads[wait->num]=thread;
3144 THREAD_DEBUG (g_message ("%s: adding thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3146 THREAD_DEBUG (g_message ("%s: ignoring (because of callback) thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
3151 /* Just ignore the rest, we can't do anything with
3158 remove_and_abort_threads (gpointer key, gpointer value, gpointer user)
3160 struct wait_data *wait=(struct wait_data *)user;
3161 MonoNativeThreadId self = mono_native_thread_id_get ();
3162 MonoInternalThread *thread = (MonoInternalThread *)value;
3165 if (wait->num >= MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS)
3168 /* The finalizer thread is not a background thread */
3169 if (!mono_native_thread_id_equals (thread_get_tid (thread), self)
3170 && (thread->state & ThreadState_Background) != 0
3171 && (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE) == 0
3173 handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3177 wait->handles[wait->num] = handle;
3178 wait->threads[wait->num] = thread;
3181 THREAD_DEBUG (g_print ("%s: Aborting id: %"G_GSIZE_FORMAT"\n", __func__, (gsize)thread->tid));
3182 mono_thread_internal_abort (thread);
3186 return !mono_native_thread_id_equals (thread_get_tid (thread), self)
3187 && !mono_gc_is_finalizer_internal_thread (thread);
3191 * mono_threads_set_shutting_down:
3193 * Is called by a thread that wants to shut down Mono. If the runtime is already
3194 * shutting down, the calling thread is suspended/stopped, and this function never
3198 mono_threads_set_shutting_down (void)
3200 MonoInternalThread *current_thread = mono_thread_internal_current ();
3202 mono_threads_lock ();
3204 if (shutting_down) {
3205 mono_threads_unlock ();
3207 /* Make sure we're properly suspended/stopped */
3209 LOCK_THREAD (current_thread);
3211 if ((current_thread->state & ThreadState_SuspendRequested) ||
3212 (current_thread->state & ThreadState_AbortRequested) ||
3213 (current_thread->state & ThreadState_StopRequested)) {
3214 UNLOCK_THREAD (current_thread);
3215 mono_thread_execute_interruption ();
3217 current_thread->state |= ThreadState_Stopped;
3218 UNLOCK_THREAD (current_thread);
3221 /*since we're killing the thread, unset the current domain.*/
3222 mono_domain_unset ();
3224 /* Wake up other threads potentially waiting for us */
3225 mono_thread_info_exit ();
3227 shutting_down = TRUE;
3229 /* Not really a background state change, but this will
3230 * interrupt the main thread if it is waiting for all
3231 * the other threads.
3233 SetEvent (background_change_event);
3235 mono_threads_unlock ();
3239 void mono_thread_manage (void)
3241 struct wait_data wait_data;
3242 struct wait_data *wait = &wait_data;
3244 memset (wait, 0, sizeof (struct wait_data));
3245 /* join each thread that's still running */
3246 THREAD_DEBUG (g_message ("%s: Joining each running thread...", __func__));
3248 mono_threads_lock ();
3250 THREAD_DEBUG (g_message("%s: No threads", __func__));
3251 mono_threads_unlock ();
3254 mono_threads_unlock ();
3257 mono_threads_lock ();
3258 if (shutting_down) {
3259 /* somebody else is shutting down */
3260 mono_threads_unlock ();
3263 THREAD_DEBUG (g_message ("%s: There are %d threads to join", __func__, mono_g_hash_table_size (threads));
3264 mono_g_hash_table_foreach (threads, print_tids, NULL));
3266 ResetEvent (background_change_event);
3268 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3269 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3270 mono_g_hash_table_foreach (threads, build_wait_tids, wait);
3271 mono_threads_unlock ();
3273 /* Something to wait for */
3274 wait_for_tids_or_state_change (wait, INFINITE);
3276 THREAD_DEBUG (g_message ("%s: I have %d threads after waiting.", __func__, wait->num));
3277 } while(wait->num>0);
3279 /* Mono is shutting down, so just wait for the end */
3280 if (!mono_runtime_try_shutdown ()) {
3281 /*FIXME mono_thread_suspend probably should call mono_thread_execute_interruption when self interrupting. */
3282 mono_thread_suspend (mono_thread_internal_current ());
3283 mono_thread_execute_interruption ();
3287 * Remove everything but the finalizer thread and self.
3288 * Also abort all the background threads
3291 mono_threads_lock ();
3294 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3295 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3296 mono_g_hash_table_foreach_remove (threads, remove_and_abort_threads, wait);
3298 mono_threads_unlock ();
3300 THREAD_DEBUG (g_message ("%s: wait->num is now %d", __func__, wait->num));
3302 /* Something to wait for */
3303 wait_for_tids (wait, INFINITE);
3305 } while (wait->num > 0);
3308 * give the subthreads a chance to really quit (this is mainly needed
3309 * to get correct user and system times from getrusage/wait/time(1)).
3310 * This could be removed if we avoid pthread_detach() and use pthread_join().
3312 mono_thread_info_yield ();
3316 collect_threads_for_suspend (gpointer key, gpointer value, gpointer user_data)
3318 MonoInternalThread *thread = (MonoInternalThread*)value;
3319 struct wait_data *wait = (struct wait_data*)user_data;
3323 * We try to exclude threads early, to avoid running into the MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS
3325 * This needs no locking.
3327 if ((thread->state & ThreadState_Suspended) != 0 ||
3328 (thread->state & ThreadState_Stopped) != 0)
3331 if (wait->num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS) {
3332 handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3336 wait->handles [wait->num] = handle;
3337 wait->threads [wait->num] = thread;
3343 * mono_thread_suspend_all_other_threads:
3345 * Suspend all managed threads except the finalizer thread and this thread. It is
3346 * not possible to resume them later.
3348 void mono_thread_suspend_all_other_threads (void)
3350 struct wait_data wait_data;
3351 struct wait_data *wait = &wait_data;
3353 MonoNativeThreadId self = mono_native_thread_id_get ();
3354 guint32 eventidx = 0;
3355 gboolean starting, finished;
3357 memset (wait, 0, sizeof (struct wait_data));
3359 * The other threads could be in an arbitrary state at this point, i.e.
3360 * they could be starting up, shutting down etc. This means that there could be
3361 * threads which are not even in the threads hash table yet.
3365 * First we set a barrier which will be checked by all threads before they
3366 * are added to the threads hash table, and they will exit if the flag is set.
3367 * This ensures that no threads could be added to the hash later.
3368 * We will use shutting_down as the barrier for now.
3370 g_assert (shutting_down);
3373 * We make multiple calls to WaitForMultipleObjects since:
3374 * - we can only wait for MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS threads
3375 * - some threads could exit without becoming suspended
3380 * Make a copy of the hashtable since we can't do anything with
3381 * threads while threads_mutex is held.
3384 /*We must zero all InternalThread pointers to avoid making the GC unhappy.*/
3385 memset (wait->threads, 0, MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS * SIZEOF_VOID_P);
3386 mono_threads_lock ();
3387 mono_g_hash_table_foreach (threads, collect_threads_for_suspend, wait);
3388 mono_threads_unlock ();
3391 /* Get the suspended events that we'll be waiting for */
3392 for (i = 0; i < wait->num; ++i) {
3393 MonoInternalThread *thread = wait->threads [i];
3395 if (mono_native_thread_id_equals (thread_get_tid (thread), self)
3396 || mono_gc_is_finalizer_internal_thread (thread)
3397 || (thread->flags & MONO_THREAD_FLAG_DONT_MANAGE)
3399 //CloseHandle (wait->handles [i]);
3400 wait->threads [i] = NULL; /* ignore this thread in next loop */
3404 LOCK_THREAD (thread);
3406 if ((thread->state & ThreadState_Suspended) != 0 ||
3407 (thread->state & ThreadState_StopRequested) != 0 ||
3408 (thread->state & ThreadState_Stopped) != 0) {
3409 UNLOCK_THREAD (thread);
3410 CloseHandle (wait->handles [i]);
3411 wait->threads [i] = NULL; /* ignore this thread in next loop */
3417 /* Convert abort requests into suspend requests */
3418 if ((thread->state & ThreadState_AbortRequested) != 0)
3419 thread->state &= ~ThreadState_AbortRequested;
3421 thread->state |= ThreadState_SuspendRequested;
3423 /* Signal the thread to suspend + calls UNLOCK_THREAD (thread) */
3424 async_suspend_internal (thread, TRUE);
3426 if (eventidx <= 0) {
3428 * If there are threads which are starting up, we wait until they
3429 * are suspended when they try to register in the threads hash.
3430 * This is guaranteed to finish, since the threads which can create new
3431 * threads get suspended after a while.
3432 * FIXME: The finalizer thread can still create new threads.
3434 mono_threads_lock ();
3435 if (threads_starting_up)
3436 starting = mono_g_hash_table_size (threads_starting_up) > 0;
3439 mono_threads_unlock ();
3441 mono_thread_info_sleep (100, NULL);
3449 MonoInternalThread *thread;
3450 MonoStackFrameInfo *frames;
3451 int nframes, max_frames;
3452 int nthreads, max_threads;
3453 MonoInternalThread **threads;
3454 } ThreadDumpUserData;
3456 static gboolean thread_dump_requested;
3458 /* This needs to be async safe */
3460 collect_frame (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
3462 ThreadDumpUserData *ud = (ThreadDumpUserData *)data;
3464 if (ud->nframes < ud->max_frames) {
3465 memcpy (&ud->frames [ud->nframes], frame, sizeof (MonoStackFrameInfo));
3472 /* This needs to be async safe */
3473 static SuspendThreadResult
3474 get_thread_dump (MonoThreadInfo *info, gpointer ud)
3476 ThreadDumpUserData *user_data = (ThreadDumpUserData *)ud;
3477 MonoInternalThread *thread = user_data->thread;
3480 /* This no longer works with remote unwinding */
3481 g_string_append_printf (text, " tid=0x%p this=0x%p ", (gpointer)(gsize)thread->tid, thread);
3482 mono_thread_info_describe (info, text);
3483 g_string_append (text, "\n");
3486 if (thread == mono_thread_internal_current ())
3487 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (collect_frame, NULL, MONO_UNWIND_SIGNAL_SAFE, ud);
3489 mono_get_eh_callbacks ()->mono_walk_stack_with_state (collect_frame, mono_thread_info_get_suspend_state (info), MONO_UNWIND_SIGNAL_SAFE, ud);
3491 return MonoResumeThread;
3495 int nthreads, max_threads;
3496 MonoInternalThread **threads;
3497 } CollectThreadsUserData;
3500 collect_thread (gpointer key, gpointer value, gpointer user)
3502 CollectThreadsUserData *ud = (CollectThreadsUserData *)user;
3503 MonoInternalThread *thread = (MonoInternalThread *)value;
3505 if (ud->nthreads < ud->max_threads)
3506 ud->threads [ud->nthreads ++] = thread;
3510 * Collect running threads into the THREADS array.
3511 * THREADS should be an array allocated on the stack.
3514 collect_threads (MonoInternalThread **thread_array, int max_threads)
3516 CollectThreadsUserData ud;
3518 memset (&ud, 0, sizeof (ud));
3519 /* This array contains refs, but its on the stack, so its ok */
3520 ud.threads = thread_array;
3521 ud.max_threads = max_threads;
3523 mono_threads_lock ();
3524 mono_g_hash_table_foreach (threads, collect_thread, &ud);
3525 mono_threads_unlock ();
3531 dump_thread (MonoInternalThread *thread, ThreadDumpUserData *ud)
3533 GString* text = g_string_new (0);
3535 GError *error = NULL;
3538 ud->thread = thread;
3541 /* Collect frames for the thread */
3542 if (thread == mono_thread_internal_current ()) {
3543 get_thread_dump (mono_thread_info_current (), ud);
3545 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), FALSE, get_thread_dump, ud);
3549 * Do all the non async-safe work outside of get_thread_dump.
3552 name = g_utf16_to_utf8 (thread->name, thread->name_len, NULL, NULL, &error);
3554 g_string_append_printf (text, "\n\"%s\"", name);
3557 else if (thread->threadpool_thread) {
3558 g_string_append (text, "\n\"<threadpool thread>\"");
3560 g_string_append (text, "\n\"<unnamed thread>\"");
3563 for (i = 0; i < ud->nframes; ++i) {
3564 MonoStackFrameInfo *frame = &ud->frames [i];
3565 MonoMethod *method = NULL;
3567 if (frame->type == FRAME_TYPE_MANAGED)
3568 method = mono_jit_info_get_method (frame->ji);
3571 gchar *location = mono_debug_print_stack_frame (method, frame->native_offset, frame->domain);
3572 g_string_append_printf (text, " %s\n", location);
3575 g_string_append_printf (text, " at <unknown> <0x%05x>\n", frame->native_offset);
3579 fprintf (stdout, "%s", text->str);
3581 #if PLATFORM_WIN32 && TARGET_WIN32 && _DEBUG
3582 OutputDebugStringA(text->str);
3585 g_string_free (text, TRUE);
3590 mono_threads_perform_thread_dump (void)
3592 ThreadDumpUserData ud;
3593 MonoInternalThread *thread_array [128];
3594 int tindex, nthreads;
3596 if (!thread_dump_requested)
3599 printf ("Full thread dump:\n");
3601 /* Make a copy of the threads hash to avoid doing work inside threads_lock () */
3602 nthreads = collect_threads (thread_array, 128);
3604 memset (&ud, 0, sizeof (ud));
3605 ud.frames = g_new0 (MonoStackFrameInfo, 256);
3606 ud.max_frames = 256;
3608 for (tindex = 0; tindex < nthreads; ++tindex)
3609 dump_thread (thread_array [tindex], &ud);
3613 thread_dump_requested = FALSE;
3616 /* Obtain the thread dump of all threads */
3618 mono_threads_get_thread_dump (MonoArray **out_threads, MonoArray **out_stack_frames, MonoError *error)
3621 ThreadDumpUserData ud;
3622 MonoInternalThread *thread_array [128];
3623 MonoDomain *domain = mono_domain_get ();
3624 MonoDebugSourceLocation *location;
3625 int tindex, nthreads;
3627 mono_error_init (error);
3629 *out_threads = NULL;
3630 *out_stack_frames = NULL;
3632 /* Make a copy of the threads hash to avoid doing work inside threads_lock () */
3633 nthreads = collect_threads (thread_array, 128);
3635 memset (&ud, 0, sizeof (ud));
3636 ud.frames = g_new0 (MonoStackFrameInfo, 256);
3637 ud.max_frames = 256;
3639 *out_threads = mono_array_new_checked (domain, mono_defaults.thread_class, nthreads, error);
3642 *out_stack_frames = mono_array_new_checked (domain, mono_defaults.array_class, nthreads, error);
3646 for (tindex = 0; tindex < nthreads; ++tindex) {
3647 MonoInternalThread *thread = thread_array [tindex];
3648 MonoArray *thread_frames;
3654 /* Collect frames for the thread */
3655 if (thread == mono_thread_internal_current ()) {
3656 get_thread_dump (mono_thread_info_current (), &ud);
3658 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), FALSE, get_thread_dump, &ud);
3661 mono_array_setref_fast (*out_threads, tindex, mono_thread_current_for_thread (thread));
3663 thread_frames = mono_array_new_checked (domain, mono_defaults.stack_frame_class, ud.nframes, error);
3666 mono_array_setref_fast (*out_stack_frames, tindex, thread_frames);
3668 for (i = 0; i < ud.nframes; ++i) {
3669 MonoStackFrameInfo *frame = &ud.frames [i];
3670 MonoMethod *method = NULL;
3671 MonoStackFrame *sf = (MonoStackFrame *)mono_object_new_checked (domain, mono_defaults.stack_frame_class, error);
3675 sf->native_offset = frame->native_offset;
3677 if (frame->type == FRAME_TYPE_MANAGED)
3678 method = mono_jit_info_get_method (frame->ji);
3681 sf->method_address = (gsize) frame->ji->code_start;
3683 MonoReflectionMethod *rm = mono_method_get_object_checked (domain, method, NULL, error);
3686 MONO_OBJECT_SETREF (sf, method, rm);
3688 location = mono_debug_lookup_source_location (method, frame->native_offset, domain);
3690 sf->il_offset = location->il_offset;
3692 if (location && location->source_file) {
3693 MONO_OBJECT_SETREF (sf, filename, mono_string_new (domain, location->source_file));
3694 sf->line = location->row;
3695 sf->column = location->column;
3697 mono_debug_free_source_location (location);
3702 mono_array_setref (thread_frames, i, sf);
3708 return is_ok (error);
3712 * mono_threads_request_thread_dump:
3714 * Ask all threads except the current to print their stacktrace to stdout.
3717 mono_threads_request_thread_dump (void)
3719 /*The new thread dump code runs out of the finalizer thread. */
3720 thread_dump_requested = TRUE;
3721 mono_gc_finalize_notify ();
3726 gint allocated; /* +1 so that refs [allocated] == NULL */
3730 typedef struct ref_stack RefStack;
3733 ref_stack_new (gint initial_size)
3737 initial_size = MAX (initial_size, 16) + 1;
3738 rs = g_new0 (RefStack, 1);
3739 rs->refs = g_new0 (gpointer, initial_size);
3740 rs->allocated = initial_size;
3745 ref_stack_destroy (gpointer ptr)
3747 RefStack *rs = (RefStack *)ptr;
3756 ref_stack_push (RefStack *rs, gpointer ptr)
3758 g_assert (rs != NULL);
3760 if (rs->bottom >= rs->allocated) {
3761 rs->refs = (void **)g_realloc (rs->refs, rs->allocated * 2 * sizeof (gpointer) + 1);
3762 rs->allocated <<= 1;
3763 rs->refs [rs->allocated] = NULL;
3765 rs->refs [rs->bottom++] = ptr;
3769 ref_stack_pop (RefStack *rs)
3771 if (rs == NULL || rs->bottom == 0)
3775 rs->refs [rs->bottom] = NULL;
3779 ref_stack_find (RefStack *rs, gpointer ptr)
3786 for (refs = rs->refs; refs && *refs; refs++) {
3794 * mono_thread_push_appdomain_ref:
3796 * Register that the current thread may have references to objects in domain
3797 * @domain on its stack. Each call to this function should be paired with a
3798 * call to pop_appdomain_ref.
3801 mono_thread_push_appdomain_ref (MonoDomain *domain)
3803 MonoInternalThread *thread = mono_thread_internal_current ();
3806 /* printf ("PUSH REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, domain->friendly_name); */
3807 SPIN_LOCK (thread->lock_thread_id);
3808 if (thread->appdomain_refs == NULL)
3809 thread->appdomain_refs = ref_stack_new (16);
3810 ref_stack_push ((RefStack *)thread->appdomain_refs, domain);
3811 SPIN_UNLOCK (thread->lock_thread_id);
3816 mono_thread_pop_appdomain_ref (void)
3818 MonoInternalThread *thread = mono_thread_internal_current ();
3821 /* printf ("POP REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, ((MonoDomain*)(thread->appdomain_refs->data))->friendly_name); */
3822 SPIN_LOCK (thread->lock_thread_id);
3823 ref_stack_pop ((RefStack *)thread->appdomain_refs);
3824 SPIN_UNLOCK (thread->lock_thread_id);
3829 mono_thread_internal_has_appdomain_ref (MonoInternalThread *thread, MonoDomain *domain)
3832 SPIN_LOCK (thread->lock_thread_id);
3833 res = ref_stack_find ((RefStack *)thread->appdomain_refs, domain);
3834 SPIN_UNLOCK (thread->lock_thread_id);
3839 mono_thread_has_appdomain_ref (MonoThread *thread, MonoDomain *domain)
3841 return mono_thread_internal_has_appdomain_ref (thread->internal_thread, domain);
3844 typedef struct abort_appdomain_data {
3845 struct wait_data wait;
3847 } abort_appdomain_data;
3850 collect_appdomain_thread (gpointer key, gpointer value, gpointer user_data)
3852 MonoInternalThread *thread = (MonoInternalThread*)value;
3853 abort_appdomain_data *data = (abort_appdomain_data*)user_data;
3854 MonoDomain *domain = data->domain;
3856 if (mono_thread_internal_has_appdomain_ref (thread, domain)) {
3857 /* printf ("ABORTING THREAD %p BECAUSE IT REFERENCES DOMAIN %s.\n", thread->tid, domain->friendly_name); */
3859 if(data->wait.num<MONO_W32HANDLE_MAXIMUM_WAIT_OBJECTS) {
3860 HANDLE handle = mono_threads_open_thread_handle (thread->handle, thread_get_tid (thread));
3863 data->wait.handles [data->wait.num] = handle;
3864 data->wait.threads [data->wait.num] = thread;
3867 /* Just ignore the rest, we can't do anything with
3875 * mono_threads_abort_appdomain_threads:
3877 * Abort threads which has references to the given appdomain.
3880 mono_threads_abort_appdomain_threads (MonoDomain *domain, int timeout)
3882 #ifdef __native_client__
3886 abort_appdomain_data user_data;
3888 int orig_timeout = timeout;
3891 THREAD_DEBUG (g_message ("%s: starting abort", __func__));
3893 start_time = mono_msec_ticks ();
3895 mono_threads_lock ();
3897 user_data.domain = domain;
3898 user_data.wait.num = 0;
3899 /* This shouldn't take any locks */
3900 mono_g_hash_table_foreach (threads, collect_appdomain_thread, &user_data);
3901 mono_threads_unlock ();
3903 if (user_data.wait.num > 0) {
3904 /* Abort the threads outside the threads lock */
3905 for (i = 0; i < user_data.wait.num; ++i)
3906 mono_thread_internal_abort (user_data.wait.threads [i]);
3909 * We should wait for the threads either to abort, or to leave the
3910 * domain. We can't do the latter, so we wait with a timeout.
3912 wait_for_tids (&user_data.wait, 100);
3915 /* Update remaining time */
3916 timeout -= mono_msec_ticks () - start_time;
3917 start_time = mono_msec_ticks ();
3919 if (orig_timeout != -1 && timeout < 0)
3922 while (user_data.wait.num > 0);
3924 THREAD_DEBUG (g_message ("%s: abort done", __func__));
3930 clear_cached_culture (gpointer key, gpointer value, gpointer user_data)
3932 MonoInternalThread *thread = (MonoInternalThread*)value;
3933 MonoDomain *domain = (MonoDomain*)user_data;
3936 /* No locking needed here */
3937 /* FIXME: why no locking? writes to the cache are protected with synch_cs above */
3939 if (thread->cached_culture_info) {
3940 for (i = 0; i < NUM_CACHED_CULTURES * 2; ++i) {
3941 MonoObject *obj = mono_array_get (thread->cached_culture_info, MonoObject*, i);
3942 if (obj && obj->vtable->domain == domain)
3943 mono_array_set (thread->cached_culture_info, MonoObject*, i, NULL);
3949 * mono_threads_clear_cached_culture:
3951 * Clear the cached_current_culture from all threads if it is in the
3955 mono_threads_clear_cached_culture (MonoDomain *domain)
3957 mono_threads_lock ();
3958 mono_g_hash_table_foreach (threads, clear_cached_culture, domain);
3959 mono_threads_unlock ();
3963 * mono_thread_get_undeniable_exception:
3965 * Return an exception which needs to be raised when leaving a catch clause.
3966 * This is used for undeniable exception propagation.
3969 mono_thread_get_undeniable_exception (void)
3971 MonoInternalThread *thread = mono_thread_internal_current ();
3973 if (thread && thread->abort_exc && !is_running_protected_wrapper ()) {
3975 * FIXME: Clear the abort exception and return an AppDomainUnloaded
3976 * exception if the thread no longer references a dying appdomain.
3978 thread->abort_exc->trace_ips = NULL;
3979 thread->abort_exc->stack_trace = NULL;
3980 return thread->abort_exc;
3986 #if MONO_SMALL_CONFIG
3987 #define NUM_STATIC_DATA_IDX 4
3988 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
3992 #define NUM_STATIC_DATA_IDX 8
3993 static const int static_data_size [NUM_STATIC_DATA_IDX] = {
3994 1024, 4096, 16384, 65536, 262144, 1048576, 4194304, 16777216
3998 static MonoBitSet *thread_reference_bitmaps [NUM_STATIC_DATA_IDX];
3999 static MonoBitSet *context_reference_bitmaps [NUM_STATIC_DATA_IDX];
4002 mark_slots (void *addr, MonoBitSet **bitmaps, MonoGCMarkFunc mark_func, void *gc_data)
4004 gpointer *static_data = (gpointer *)addr;
4006 for (int i = 0; i < NUM_STATIC_DATA_IDX; ++i) {
4007 void **ptr = (void **)static_data [i];
4012 MONO_BITSET_FOREACH (bitmaps [i], idx, {
4013 void **p = ptr + idx;
4016 mark_func ((MonoObject**)p, gc_data);
4022 mark_tls_slots (void *addr, MonoGCMarkFunc mark_func, void *gc_data)
4024 mark_slots (addr, thread_reference_bitmaps, mark_func, gc_data);
4028 mark_ctx_slots (void *addr, MonoGCMarkFunc mark_func, void *gc_data)
4030 mark_slots (addr, context_reference_bitmaps, mark_func, gc_data);
4034 * mono_alloc_static_data
4036 * Allocate memory blocks for storing threads or context static data
4039 mono_alloc_static_data (gpointer **static_data_ptr, guint32 offset, gboolean threadlocal)
4041 guint idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4044 gpointer* static_data = *static_data_ptr;
4046 static MonoGCDescriptor tls_desc = MONO_GC_DESCRIPTOR_NULL;
4047 static MonoGCDescriptor ctx_desc = MONO_GC_DESCRIPTOR_NULL;
4049 if (mono_gc_user_markers_supported ()) {
4050 if (tls_desc == MONO_GC_DESCRIPTOR_NULL)
4051 tls_desc = mono_gc_make_root_descr_user (mark_tls_slots);
4053 if (ctx_desc == MONO_GC_DESCRIPTOR_NULL)
4054 ctx_desc = mono_gc_make_root_descr_user (mark_ctx_slots);
4057 static_data = (void **)mono_gc_alloc_fixed (static_data_size [0], threadlocal ? tls_desc : ctx_desc,
4058 threadlocal ? MONO_ROOT_SOURCE_THREAD_STATIC : MONO_ROOT_SOURCE_CONTEXT_STATIC,
4059 threadlocal ? "managed thread-static variables" : "managed context-static variables");
4060 *static_data_ptr = static_data;
4061 static_data [0] = static_data;
4064 for (i = 1; i <= idx; ++i) {
4065 if (static_data [i])
4068 if (mono_gc_user_markers_supported ())
4069 static_data [i] = g_malloc0 (static_data_size [i]);
4071 static_data [i] = mono_gc_alloc_fixed (static_data_size [i], MONO_GC_DESCRIPTOR_NULL,
4072 threadlocal ? MONO_ROOT_SOURCE_THREAD_STATIC : MONO_ROOT_SOURCE_CONTEXT_STATIC,
4073 threadlocal ? "managed thread-static variables" : "managed context-static variables");
4078 mono_free_static_data (gpointer* static_data)
4081 for (i = 1; i < NUM_STATIC_DATA_IDX; ++i) {
4082 gpointer p = static_data [i];
4086 * At this point, the static data pointer array is still registered with the
4087 * GC, so must ensure that mark_tls_slots() will not encounter any invalid
4088 * data. Freeing the individual arrays without first nulling their slots
4089 * would make it possible for mark_tls/ctx_slots() to encounter a pointer to
4090 * such an already freed array. See bug #13813.
4092 static_data [i] = NULL;
4093 mono_memory_write_barrier ();
4094 if (mono_gc_user_markers_supported ())
4097 mono_gc_free_fixed (p);
4099 mono_gc_free_fixed (static_data);
4103 * mono_init_static_data_info
4105 * Initializes static data counters
4107 static void mono_init_static_data_info (StaticDataInfo *static_data)
4109 static_data->idx = 0;
4110 static_data->offset = 0;
4111 static_data->freelist = NULL;
4115 * mono_alloc_static_data_slot
4117 * Generates an offset for static data. static_data contains the counters
4118 * used to generate it.
4121 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align)
4123 if (!static_data->idx && !static_data->offset) {
4125 * we use the first chunk of the first allocation also as
4126 * an array for the rest of the data
4128 static_data->offset = sizeof (gpointer) * NUM_STATIC_DATA_IDX;
4130 static_data->offset += align - 1;
4131 static_data->offset &= ~(align - 1);
4132 if (static_data->offset + size >= static_data_size [static_data->idx]) {
4133 static_data->idx ++;
4134 g_assert (size <= static_data_size [static_data->idx]);
4135 g_assert (static_data->idx < NUM_STATIC_DATA_IDX);
4136 static_data->offset = 0;
4138 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (static_data->idx, static_data->offset, 0);
4139 static_data->offset += size;
4144 * ensure thread static fields already allocated are valid for thread
4145 * This function is called when a thread is created or on thread attach.
4148 thread_adjust_static_data (MonoInternalThread *thread)
4150 mono_threads_lock ();
4151 if (thread_static_info.offset || thread_static_info.idx > 0) {
4152 /* get the current allocated size */
4153 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (thread_static_info.idx, thread_static_info.offset, 0);
4154 mono_alloc_static_data (&thread->static_data, offset, TRUE);
4156 mono_threads_unlock ();
4160 * LOCKING: requires that threads_mutex is held
4163 context_adjust_static_data (MonoAppContext *ctx)
4165 if (context_static_info.offset || context_static_info.idx > 0) {
4166 guint32 offset = MAKE_SPECIAL_STATIC_OFFSET (context_static_info.idx, context_static_info.offset, 0);
4167 mono_alloc_static_data (&ctx->static_data, offset, FALSE);
4168 ctx->data->static_data = ctx->static_data;
4173 * LOCKING: requires that threads_mutex is held
4176 alloc_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
4178 MonoInternalThread *thread = (MonoInternalThread *)value;
4179 guint32 offset = GPOINTER_TO_UINT (user);
4181 mono_alloc_static_data (&(thread->static_data), offset, TRUE);
4185 * LOCKING: requires that threads_mutex is held
4188 alloc_context_static_data_helper (gpointer key, gpointer value, gpointer user)
4190 MonoAppContext *ctx = (MonoAppContext *) mono_gchandle_get_target (GPOINTER_TO_INT (key));
4195 guint32 offset = GPOINTER_TO_UINT (user);
4196 mono_alloc_static_data (&ctx->static_data, offset, FALSE);
4197 ctx->data->static_data = ctx->static_data;
4200 static StaticDataFreeList*
4201 search_slot_in_freelist (StaticDataInfo *static_data, guint32 size, guint32 align)
4203 StaticDataFreeList* prev = NULL;
4204 StaticDataFreeList* tmp = static_data->freelist;
4206 if (tmp->size == size) {
4208 prev->next = tmp->next;
4210 static_data->freelist = tmp->next;
4219 #if SIZEOF_VOID_P == 4
4226 update_reference_bitmap (MonoBitSet **sets, guint32 offset, uintptr_t *bitmap, int numbits)
4228 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4230 sets [idx] = mono_bitset_new (static_data_size [idx] / sizeof (uintptr_t), 0);
4231 MonoBitSet *rb = sets [idx];
4232 offset = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
4233 offset /= sizeof (uintptr_t);
4234 /* offset is now the bitmap offset */
4235 for (int i = 0; i < numbits; ++i) {
4236 if (bitmap [i / sizeof (uintptr_t)] & (ONE_P << (i & (sizeof (uintptr_t) * 8 -1))))
4237 mono_bitset_set_fast (rb, offset + i);
4242 clear_reference_bitmap (MonoBitSet **sets, guint32 offset, guint32 size)
4244 int idx = ACCESS_SPECIAL_STATIC_OFFSET (offset, index);
4245 MonoBitSet *rb = sets [idx];
4246 offset = ACCESS_SPECIAL_STATIC_OFFSET (offset, offset);
4247 offset /= sizeof (uintptr_t);
4248 /* offset is now the bitmap offset */
4249 for (int i = 0; i < size / sizeof (uintptr_t); i++)
4250 mono_bitset_clear_fast (rb, offset + i);
4254 mono_alloc_special_static_data (guint32 static_type, guint32 size, guint32 align, uintptr_t *bitmap, int numbits)
4256 g_assert (static_type == SPECIAL_STATIC_THREAD || static_type == SPECIAL_STATIC_CONTEXT);
4258 StaticDataInfo *info;
4261 if (static_type == SPECIAL_STATIC_THREAD) {
4262 info = &thread_static_info;
4263 sets = thread_reference_bitmaps;
4265 info = &context_static_info;
4266 sets = context_reference_bitmaps;
4269 mono_threads_lock ();
4271 StaticDataFreeList *item = search_slot_in_freelist (info, size, align);
4275 offset = item->offset;
4278 offset = mono_alloc_static_data_slot (info, size, align);
4281 update_reference_bitmap (sets, offset, bitmap, numbits);
4283 if (static_type == SPECIAL_STATIC_THREAD) {
4284 /* This can be called during startup */
4285 if (threads != NULL)
4286 mono_g_hash_table_foreach (threads, alloc_thread_static_data_helper, GUINT_TO_POINTER (offset));
4288 if (contexts != NULL)
4289 g_hash_table_foreach (contexts, alloc_context_static_data_helper, GUINT_TO_POINTER (offset));
4291 ACCESS_SPECIAL_STATIC_OFFSET (offset, type) = SPECIAL_STATIC_OFFSET_TYPE_CONTEXT;
4294 mono_threads_unlock ();
4300 mono_get_special_static_data_for_thread (MonoInternalThread *thread, guint32 offset)
4302 guint32 static_type = ACCESS_SPECIAL_STATIC_OFFSET (offset, type);
4304 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4305 return get_thread_static_data (thread, offset);
4307 return get_context_static_data (thread->current_appcontext, offset);
4312 mono_get_special_static_data (guint32 offset)
4314 return mono_get_special_static_data_for_thread (mono_thread_internal_current (), offset);
4323 * LOCKING: requires that threads_mutex is held
4326 free_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
4328 MonoInternalThread *thread = (MonoInternalThread *)value;
4329 OffsetSize *data = (OffsetSize *)user;
4330 int idx = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, index);
4331 int off = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, offset);
4334 if (!thread->static_data || !thread->static_data [idx])
4336 ptr = ((char*) thread->static_data [idx]) + off;
4337 mono_gc_bzero_atomic (ptr, data->size);
4341 * LOCKING: requires that threads_mutex is held
4344 free_context_static_data_helper (gpointer key, gpointer value, gpointer user)
4346 MonoAppContext *ctx = (MonoAppContext *) mono_gchandle_get_target (GPOINTER_TO_INT (key));
4351 OffsetSize *data = (OffsetSize *)user;
4352 int idx = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, index);
4353 int off = ACCESS_SPECIAL_STATIC_OFFSET (data->offset, offset);
4356 if (!ctx->static_data || !ctx->static_data [idx])
4359 ptr = ((char*) ctx->static_data [idx]) + off;
4360 mono_gc_bzero_atomic (ptr, data->size);
4364 do_free_special_slot (guint32 offset, guint32 size)
4366 guint32 static_type = ACCESS_SPECIAL_STATIC_OFFSET (offset, type);
4368 StaticDataInfo *info;
4370 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4371 info = &thread_static_info;
4372 sets = thread_reference_bitmaps;
4374 info = &context_static_info;
4375 sets = context_reference_bitmaps;
4378 guint32 data_offset = offset;
4379 ACCESS_SPECIAL_STATIC_OFFSET (data_offset, type) = 0;
4380 OffsetSize data = { data_offset, size };
4382 clear_reference_bitmap (sets, data.offset, data.size);
4384 if (static_type == SPECIAL_STATIC_OFFSET_TYPE_THREAD) {
4385 if (threads != NULL)
4386 mono_g_hash_table_foreach (threads, free_thread_static_data_helper, &data);
4388 if (contexts != NULL)
4389 g_hash_table_foreach (contexts, free_context_static_data_helper, &data);
4392 if (!mono_runtime_is_shutting_down ()) {
4393 StaticDataFreeList *item = g_new0 (StaticDataFreeList, 1);
4395 item->offset = offset;
4398 item->next = info->freelist;
4399 info->freelist = item;
4404 do_free_special (gpointer key, gpointer value, gpointer data)
4406 MonoClassField *field = (MonoClassField *)key;
4407 guint32 offset = GPOINTER_TO_UINT (value);
4410 size = mono_type_size (field->type, &align);
4411 do_free_special_slot (offset, size);
4415 mono_alloc_special_static_data_free (GHashTable *special_static_fields)
4417 mono_threads_lock ();
4419 g_hash_table_foreach (special_static_fields, do_free_special, NULL);
4421 mono_threads_unlock ();
4425 static void CALLBACK dummy_apc (ULONG_PTR param)
4431 * mono_thread_execute_interruption
4433 * Performs the operation that the requested thread state requires (abort,
4436 static MonoException*
4437 mono_thread_execute_interruption (void)
4439 MonoInternalThread *thread = mono_thread_internal_current ();
4440 MonoThread *sys_thread = mono_thread_current ();
4442 LOCK_THREAD (thread);
4444 /* MonoThread::interruption_requested can only be changed with atomics */
4445 if (InterlockedCompareExchange (&thread->interruption_requested, FALSE, TRUE)) {
4446 /* this will consume pending APC calls */
4448 WaitForSingleObjectEx (GetCurrentThread(), 0, TRUE);
4450 InterlockedDecrement (&thread_interruption_requested);
4452 /* Clear the interrupted flag of the thread so it can wait again */
4453 mono_thread_info_clear_self_interrupt ();
4456 /* If there's a pending exception and an AbortRequested, the pending exception takes precedence */
4457 if (sys_thread->pending_exception) {
4460 exc = sys_thread->pending_exception;
4461 sys_thread->pending_exception = NULL;
4463 UNLOCK_THREAD (thread);
4465 } else if ((thread->state & ThreadState_AbortRequested) != 0) {
4466 UNLOCK_THREAD (thread);
4467 g_assert (sys_thread->pending_exception == NULL);
4468 if (thread->abort_exc == NULL) {
4470 * This might be racy, but it has to be called outside the lock
4471 * since it calls managed code.
4473 MONO_OBJECT_SETREF (thread, abort_exc, mono_get_exception_thread_abort ());
4475 return thread->abort_exc;
4477 else if ((thread->state & ThreadState_SuspendRequested) != 0) {
4478 /* calls UNLOCK_THREAD (thread) */
4479 self_suspend_internal ();
4482 else if ((thread->state & ThreadState_StopRequested) != 0) {
4483 /* FIXME: do this through the JIT? */
4485 UNLOCK_THREAD (thread);
4487 mono_thread_exit ();
4489 } else if (thread->thread_interrupt_requested) {
4491 thread->thread_interrupt_requested = FALSE;
4492 UNLOCK_THREAD (thread);
4494 return(mono_get_exception_thread_interrupted ());
4497 UNLOCK_THREAD (thread);
4503 * mono_thread_request_interruption
4505 * A signal handler can call this method to request the interruption of a
4506 * thread. The result of the interruption will depend on the current state of
4507 * the thread. If the result is an exception that needs to be throw, it is
4508 * provided as return value.
4511 mono_thread_request_interruption (gboolean running_managed)
4513 MonoInternalThread *thread = mono_thread_internal_current ();
4515 /* The thread may already be stopping */
4520 if (thread->interrupt_on_stop &&
4521 thread->state & ThreadState_StopRequested &&
4522 thread->state & ThreadState_Background)
4526 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4528 InterlockedIncrement (&thread_interruption_requested);
4530 if (!running_managed || is_running_protected_wrapper ()) {
4531 /* Can't stop while in unmanaged code. Increase the global interruption
4532 request count. When exiting the unmanaged method the count will be
4533 checked and the thread will be interrupted. */
4535 /* this will awake the thread if it is in WaitForSingleObject
4537 /* Our implementation of this function ignores the func argument */
4539 QueueUserAPC ((PAPCFUNC)dummy_apc, thread->handle, (ULONG_PTR)NULL);
4541 mono_thread_info_self_interrupt ();
4546 return mono_thread_execute_interruption ();
4550 /*This function should be called by a thread after it has exited all of
4551 * its handle blocks at interruption time.*/
4553 mono_thread_resume_interruption (void)
4555 MonoInternalThread *thread = mono_thread_internal_current ();
4556 gboolean still_aborting;
4558 /* The thread may already be stopping */
4562 LOCK_THREAD (thread);
4563 still_aborting = (thread->state & (ThreadState_AbortRequested|ThreadState_StopRequested)) != 0;
4564 UNLOCK_THREAD (thread);
4566 /*This can happen if the protected block called Thread::ResetAbort*/
4567 if (!still_aborting)
4570 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4572 InterlockedIncrement (&thread_interruption_requested);
4574 mono_thread_info_self_interrupt ();
4576 return mono_thread_execute_interruption ();
4579 gboolean mono_thread_interruption_requested ()
4581 if (thread_interruption_requested) {
4582 MonoInternalThread *thread = mono_thread_internal_current ();
4583 /* The thread may already be stopping */
4585 return (thread->interruption_requested);
4590 static MonoException*
4591 mono_thread_interruption_checkpoint_request (gboolean bypass_abort_protection)
4593 MonoInternalThread *thread = mono_thread_internal_current ();
4595 /* The thread may already be stopping */
4599 if (thread->interruption_requested && (bypass_abort_protection || !is_running_protected_wrapper ())) {
4600 MonoException* exc = mono_thread_execute_interruption ();
4608 * Performs the interruption of the current thread, if one has been requested,
4609 * and the thread is not running a protected wrapper.
4610 * Return the exception which needs to be thrown, if any.
4613 mono_thread_interruption_checkpoint (void)
4615 return mono_thread_interruption_checkpoint_request (FALSE);
4619 * Performs the interruption of the current thread, if one has been requested.
4620 * Return the exception which needs to be thrown, if any.
4623 mono_thread_force_interruption_checkpoint_noraise (void)
4625 return mono_thread_interruption_checkpoint_request (TRUE);
4629 * mono_set_pending_exception:
4631 * Set the pending exception of the current thread to EXC.
4632 * The exception will be thrown when execution returns to managed code.
4635 mono_set_pending_exception (MonoException *exc)
4637 MonoThread *thread = mono_thread_current ();
4639 /* The thread may already be stopping */
4643 MONO_OBJECT_SETREF (thread, pending_exception, exc);
4645 mono_thread_request_interruption (FALSE);
4649 * mono_thread_interruption_request_flag:
4651 * Returns the address of a flag that will be non-zero if an interruption has
4652 * been requested for a thread. The thread to interrupt may not be the current
4653 * thread, so an additional call to mono_thread_interruption_requested() or
4654 * mono_thread_interruption_checkpoint() is allways needed if the flag is not
4657 gint32* mono_thread_interruption_request_flag ()
4659 return &thread_interruption_requested;
4663 mono_thread_init_apartment_state (void)
4666 MonoInternalThread* thread = mono_thread_internal_current ();
4668 /* Positive return value indicates success, either
4669 * S_OK if this is first CoInitialize call, or
4670 * S_FALSE if CoInitialize already called, but with same
4671 * threading model. A negative value indicates failure,
4672 * probably due to trying to change the threading model.
4674 if (CoInitializeEx(NULL, (thread->apartment_state == ThreadApartmentState_STA)
4675 ? COINIT_APARTMENTTHREADED
4676 : COINIT_MULTITHREADED) < 0) {
4677 thread->apartment_state = ThreadApartmentState_Unknown;
4683 mono_thread_cleanup_apartment_state (void)
4686 MonoInternalThread* thread = mono_thread_internal_current ();
4688 if (thread && thread->apartment_state != ThreadApartmentState_Unknown) {
4695 mono_thread_set_state (MonoInternalThread *thread, MonoThreadState state)
4697 LOCK_THREAD (thread);
4698 thread->state |= state;
4699 UNLOCK_THREAD (thread);
4703 mono_thread_clr_state (MonoInternalThread *thread, MonoThreadState state)
4705 LOCK_THREAD (thread);
4706 thread->state &= ~state;
4707 UNLOCK_THREAD (thread);
4711 mono_thread_test_state (MonoInternalThread *thread, MonoThreadState test)
4713 gboolean ret = FALSE;
4715 LOCK_THREAD (thread);
4717 if ((thread->state & test) != 0) {
4721 UNLOCK_THREAD (thread);
4726 static gboolean has_tls_get = FALSE;
4729 mono_runtime_set_has_tls_get (gboolean val)
4735 mono_runtime_has_tls_get (void)
4741 self_interrupt_thread (void *_unused)
4743 MonoThreadInfo *info = mono_thread_info_current ();
4744 MonoException *exc = mono_thread_execute_interruption ();
4745 if (exc) /*We must use _with_context since we didn't trampoline into the runtime*/
4746 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. */
4747 g_assert_not_reached (); /*this MUST not happen since we can't resume from an async call*/
4751 mono_jit_info_match (MonoJitInfo *ji, gpointer ip)
4755 return ji->code_start <= ip && (char*)ip < (char*)ji->code_start + ji->code_size;
4759 last_managed (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
4761 MonoJitInfo **dest = (MonoJitInfo **)data;
4767 mono_thread_info_get_last_managed (MonoThreadInfo *info)
4769 MonoJitInfo *ji = NULL;
4774 * The suspended thread might be holding runtime locks. Make sure we don't try taking
4775 * any runtime locks while unwinding. In coop case we shouldn't safepoint in regions
4776 * where we hold runtime locks.
4778 if (!mono_threads_is_coop_enabled ())
4779 mono_thread_info_set_is_async_context (TRUE);
4780 mono_get_eh_callbacks ()->mono_walk_stack_with_state (last_managed, mono_thread_info_get_suspend_state (info), MONO_UNWIND_SIGNAL_SAFE, &ji);
4781 if (!mono_threads_is_coop_enabled ())
4782 mono_thread_info_set_is_async_context (FALSE);
4787 MonoInternalThread *thread;
4788 gboolean install_async_abort;
4789 MonoThreadInfoInterruptToken *interrupt_token;
4792 static SuspendThreadResult
4793 async_abort_critical (MonoThreadInfo *info, gpointer ud)
4795 AbortThreadData *data = (AbortThreadData *)ud;
4796 MonoInternalThread *thread = data->thread;
4797 MonoJitInfo *ji = NULL;
4798 gboolean protected_wrapper;
4799 gboolean running_managed;
4801 if (mono_get_eh_callbacks ()->mono_install_handler_block_guard (mono_thread_info_get_suspend_state (info)))
4802 return MonoResumeThread;
4804 /*someone is already interrupting it*/
4805 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 1)
4806 return MonoResumeThread;
4808 InterlockedIncrement (&thread_interruption_requested);
4810 ji = mono_thread_info_get_last_managed (info);
4811 protected_wrapper = ji && !ji->is_trampoline && !ji->async && mono_threads_is_critical_method (mono_jit_info_get_method (ji));
4812 running_managed = mono_jit_info_match (ji, MONO_CONTEXT_GET_IP (&mono_thread_info_get_suspend_state (info)->ctx));
4814 if (!protected_wrapper && running_managed) {
4815 /*We are in managed code*/
4816 /*Set the thread to call */
4817 if (data->install_async_abort)
4818 mono_thread_info_setup_async_call (info, self_interrupt_thread, NULL);
4819 return MonoResumeThread;
4822 * This will cause waits to be broken.
4823 * It will also prevent the thread from entering a wait, so if the thread returns
4824 * from the wait before it receives the abort signal, it will just spin in the wait
4825 * functions in the io-layer until the signal handler calls QueueUserAPC which will
4828 data->interrupt_token = mono_thread_info_prepare_interrupt (info);
4830 return MonoResumeThread;
4835 async_abort_internal (MonoInternalThread *thread, gboolean install_async_abort)
4837 AbortThreadData data;
4839 g_assert (thread != mono_thread_internal_current ());
4841 data.thread = thread;
4842 data.install_async_abort = install_async_abort;
4843 data.interrupt_token = NULL;
4845 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), TRUE, async_abort_critical, &data);
4846 if (data.interrupt_token)
4847 mono_thread_info_finish_interrupt (data.interrupt_token);
4848 /*FIXME we need to wait for interruption to complete -- figure out how much into interruption we should wait for here*/
4852 self_abort_internal (MonoError *error)
4856 mono_error_init (error);
4858 /* FIXME this is insanely broken, it doesn't cause interruption to happen synchronously
4859 * since passing FALSE to mono_thread_request_interruption makes sure it returns NULL */
4861 exc = mono_thread_request_interruption (TRUE);
4863 mono_error_set_exception_instance (error, exc);
4865 mono_thread_info_self_interrupt ();
4869 MonoInternalThread *thread;
4871 MonoThreadInfoInterruptToken *interrupt_token;
4872 } SuspendThreadData;
4874 static SuspendThreadResult
4875 async_suspend_critical (MonoThreadInfo *info, gpointer ud)
4877 SuspendThreadData *data = (SuspendThreadData *)ud;
4878 MonoInternalThread *thread = data->thread;
4879 MonoJitInfo *ji = NULL;
4880 gboolean protected_wrapper;
4881 gboolean running_managed;
4883 ji = mono_thread_info_get_last_managed (info);
4884 protected_wrapper = ji && !ji->is_trampoline && !ji->async && mono_threads_is_critical_method (mono_jit_info_get_method (ji));
4885 running_managed = mono_jit_info_match (ji, MONO_CONTEXT_GET_IP (&mono_thread_info_get_suspend_state (info)->ctx));
4887 if (running_managed && !protected_wrapper) {
4888 thread->state &= ~ThreadState_SuspendRequested;
4889 thread->state |= ThreadState_Suspended;
4890 return KeepSuspended;
4892 if (InterlockedCompareExchange (&thread->interruption_requested, 1, 0) == 0)
4893 InterlockedIncrement (&thread_interruption_requested);
4894 if (data->interrupt)
4895 data->interrupt_token = mono_thread_info_prepare_interrupt ((MonoThreadInfo *)thread->thread_info);
4897 return MonoResumeThread;
4901 /* LOCKING: called with @thread synch_cs held, and releases it */
4903 async_suspend_internal (MonoInternalThread *thread, gboolean interrupt)
4905 SuspendThreadData data;
4907 g_assert (thread != mono_thread_internal_current ());
4909 data.thread = thread;
4910 data.interrupt = interrupt;
4911 data.interrupt_token = NULL;
4913 mono_thread_info_safe_suspend_and_run (thread_get_tid (thread), interrupt, async_suspend_critical, &data);
4914 if (data.interrupt_token)
4915 mono_thread_info_finish_interrupt (data.interrupt_token);
4917 UNLOCK_THREAD (thread);
4920 /* LOCKING: called with @thread synch_cs held, and releases it */
4922 self_suspend_internal (void)
4924 MonoInternalThread *thread;
4926 thread = mono_thread_internal_current ();
4928 mono_thread_info_begin_self_suspend ();
4929 thread->state &= ~ThreadState_SuspendRequested;
4930 thread->state |= ThreadState_Suspended;
4932 UNLOCK_THREAD (thread);
4934 mono_thread_info_end_self_suspend ();
4938 * mono_thread_is_foreign:
4939 * @thread: the thread to query
4941 * This function allows one to determine if a thread was created by the mono runtime and has
4942 * a well defined lifecycle or it's a foreigh one, created by the native environment.
4944 * Returns: TRUE if @thread was not created by the runtime.
4947 mono_thread_is_foreign (MonoThread *thread)
4949 MonoThreadInfo *info = (MonoThreadInfo *)thread->internal_thread->thread_info;
4950 return info->runtime_thread == FALSE;
4954 * mono_add_joinable_thread:
4956 * Add TID to the list of joinable threads.
4957 * LOCKING: Acquires the threads lock.
4960 mono_threads_add_joinable_thread (gpointer tid)
4964 * We cannot detach from threads because it causes problems like
4965 * 2fd16f60/r114307. So we collect them and join them when
4966 * we have time (in he finalizer thread).
4968 joinable_threads_lock ();
4969 if (!joinable_threads)
4970 joinable_threads = g_hash_table_new (NULL, NULL);
4971 g_hash_table_insert (joinable_threads, tid, tid);
4972 joinable_thread_count ++;
4973 joinable_threads_unlock ();
4975 mono_gc_finalize_notify ();
4980 * mono_threads_join_threads:
4982 * Join all joinable threads. This is called from the finalizer thread.
4983 * LOCKING: Acquires the threads lock.
4986 mono_threads_join_threads (void)
4989 GHashTableIter iter;
4996 if (!joinable_thread_count)
5000 joinable_threads_lock ();
5002 if (g_hash_table_size (joinable_threads)) {
5003 g_hash_table_iter_init (&iter, joinable_threads);
5004 g_hash_table_iter_next (&iter, &key, (void**)&tid);
5005 thread = (pthread_t)tid;
5006 g_hash_table_remove (joinable_threads, key);
5007 joinable_thread_count --;
5010 joinable_threads_unlock ();
5012 if (thread != pthread_self ()) {
5014 /* This shouldn't block */
5015 pthread_join (thread, NULL);
5028 * Wait for thread TID to exit.
5029 * LOCKING: Acquires the threads lock.
5032 mono_thread_join (gpointer tid)
5036 gboolean found = FALSE;
5038 joinable_threads_lock ();
5039 if (!joinable_threads)
5040 joinable_threads = g_hash_table_new (NULL, NULL);
5041 if (g_hash_table_lookup (joinable_threads, tid)) {
5042 g_hash_table_remove (joinable_threads, tid);
5043 joinable_thread_count --;
5046 joinable_threads_unlock ();
5049 thread = (pthread_t)tid;
5051 pthread_join (thread, NULL);
5057 mono_thread_internal_check_for_interruption_critical (MonoInternalThread *thread)
5059 if ((thread->state & (ThreadState_StopRequested | ThreadState_SuspendRequested)) != 0)
5060 mono_thread_interruption_checkpoint ();
5064 mono_thread_internal_unhandled_exception (MonoObject* exc)
5066 if (mono_runtime_unhandled_exception_policy_get () == MONO_UNHANDLED_POLICY_CURRENT) {
5067 MonoClass *klass = exc->vtable->klass;
5068 if (is_threadabort_exception (klass)) {
5069 mono_thread_internal_reset_abort (mono_thread_internal_current ());
5070 } else if (!is_appdomainunloaded_exception (klass)) {
5071 mono_unhandled_exception (exc);
5072 if (mono_environment_exitcode_get () == 1) {
5073 mono_environment_exitcode_set (255);
5074 mono_invoke_unhandled_exception_hook (exc);
5075 g_assert_not_reached ();
5082 ves_icall_System_Threading_Thread_GetStackTraces (MonoArray **out_threads, MonoArray **out_stack_traces)
5085 mono_threads_get_thread_dump (out_threads, out_stack_traces, &error);
5086 mono_error_set_pending_exception (&error);
5090 * mono_threads_attach_coop: called by native->managed wrappers
5094 * - @return: the original domain which needs to be restored, or NULL.
5097 * - @dummy: contains the original domain
5098 * - @return: a cookie containing current MonoThreadInfo*.
5101 mono_threads_attach_coop (MonoDomain *domain, gpointer *dummy)
5104 gboolean fresh_thread = FALSE;
5107 /* Happens when called from AOTed code which is only used in the root domain. */
5108 domain = mono_get_root_domain ();
5113 /* On coop, when we detached, we moved the thread from RUNNING->BLOCKING.
5114 * If we try to reattach we do a BLOCKING->RUNNING transition. If the thread
5115 * is fresh, mono_thread_attach() will do a STARTING->RUNNING transition so
5116 * we're only responsible for making the cookie. */
5117 if (mono_threads_is_coop_enabled ()) {
5118 MonoThreadInfo *info = mono_thread_info_current_unchecked ();
5119 fresh_thread = !info || !mono_thread_info_is_live (info);
5122 if (!mono_thread_internal_current ()) {
5123 mono_thread_attach_full (domain, FALSE);
5126 mono_thread_set_state (mono_thread_internal_current (), ThreadState_Background);
5129 orig = mono_domain_get ();
5131 mono_domain_set (domain, TRUE);
5133 if (!mono_threads_is_coop_enabled ())
5134 return orig != domain ? orig : NULL;
5138 /* mono_thread_attach put the thread in RUNNING mode from STARTING, but we need to
5139 * return the right cookie. */
5140 return mono_threads_enter_gc_unsafe_region_cookie ();
5143 /* thread state (BLOCKING|RUNNING) -> RUNNING */
5144 return mono_threads_enter_gc_unsafe_region (dummy);
5149 * mono_threads_detach_coop: called by native->managed wrappers
5152 * - @cookie: the original domain which needs to be restored, or NULL.
5156 * - @cookie: contains current MonoThreadInfo* if it was in BLOCKING mode, NULL otherwise
5157 * - @dummy: contains the original domain
5160 mono_threads_detach_coop (gpointer cookie, gpointer *dummy)
5162 MonoDomain *domain, *orig;
5164 if (!mono_threads_is_coop_enabled ()) {
5165 orig = (MonoDomain*) cookie;
5167 mono_domain_set (orig, TRUE);
5169 orig = (MonoDomain*) *dummy;
5171 domain = mono_domain_get ();
5174 /* it won't do anything if cookie is NULL
5175 * thread state RUNNING -> (RUNNING|BLOCKING) */
5176 mono_threads_exit_gc_unsafe_region (cookie, dummy);
5178 if (orig != domain) {
5180 mono_domain_unset ();
5182 mono_domain_set (orig, TRUE);