*
* Author:
* Dick Porter (dick@ximian.com)
+ * Paolo Molaro (lupus@ximian.com)
+ * Patrik Torstensson (patrik.torstensson@labs2.com)
*
* (C) 2001 Ximian, Inc.
*/
#include <config.h>
+#ifdef PLATFORM_WIN32
+#define _WIN32_WINNT 0x0500
+#endif
+
#include <glib.h>
+#include <signal.h>
+#include <string.h>
#include <mono/metadata/object.h>
+#include <mono/metadata/domain-internals.h>
+#include <mono/metadata/profiler-private.h>
#include <mono/metadata/threads.h>
+#include <mono/metadata/threadpool.h>
#include <mono/metadata/threads-types.h>
+#include <mono/metadata/exception.h>
+#include <mono/metadata/environment.h>
+#include <mono/metadata/monitor.h>
+#include <mono/metadata/gc-internal.h>
+#include <mono/metadata/marshal.h>
#include <mono/io-layer/io-layer.h>
-
-#undef THREAD_DEBUG
-#undef THREAD_LOCK_DEBUG
-#undef THREAD_WAIT_DEBUG
+#include <mono/metadata/object-internals.h>
+#include <mono/metadata/mono-debug-debugger.h>
+#include <mono/utils/mono-compiler.h>
+
+#include <mono/os/gc_wrapper.h>
+
+/*#define THREAD_DEBUG(a) do { a; } while (0)*/
+#define THREAD_DEBUG(a)
+/*#define THREAD_WAIT_DEBUG(a) do { a; } while (0)*/
+#define THREAD_WAIT_DEBUG(a)
+/*#define LIBGC_DEBUG(a) do { a; } while (0)*/
+#define LIBGC_DEBUG(a)
+
+/* Provide this for systems with glib < 2.6 */
+#ifndef G_GSIZE_FORMAT
+# if GLIB_SIZEOF_LONG == 8
+# define G_GSIZE_FORMAT "lu"
+# else
+# define G_GSIZE_FORMAT "u"
+# endif
+#endif
struct StartInfo
{
guint32 (*func)(void *);
- MonoObject *obj;
+ MonoThread *obj;
+ MonoObject *delegate;
+ void *start_arg;
+ MonoDomain *domain;
};
-/* Controls access to the 'threads' array */
-static CRITICAL_SECTION threads_mutex;
+typedef union {
+ gint32 ival;
+ gfloat fval;
+} IntFloatUnion;
+
+typedef union {
+ gint64 ival;
+ gdouble fval;
+} LongDoubleUnion;
+
+typedef struct {
+ int idx;
+ int offset;
+} StaticDataInfo;
+
+/* Number of cached culture objects in the MonoThread->cached_culture_info array
+ * (per-type): we use the first NUM entries for CultureInfo and the last for
+ * UICultureInfo. So the size of the array is really NUM_CACHED_CULTURES * 2.
+ */
+#define NUM_CACHED_CULTURES 4
+#define CULTURES_START_IDX 0
+#define UICULTURES_START_IDX NUM_CACHED_CULTURES
-/* Controls access to the sync field in MonoObjects, to avoid race
- * conditions when adding sync data to an object for the first time.
+/*
+ * The "os_handle" field of the WaitHandle class.
*/
-static CRITICAL_SECTION monitor_mutex;
+static MonoClassField *wait_handle_os_handle_field = NULL;
-/* The array of existing threads that need joining before exit */
-static GPtrArray *threads=NULL;
+/* Controls access to the 'threads' hash table */
+#define mono_threads_lock() EnterCriticalSection (&threads_mutex)
+#define mono_threads_unlock() LeaveCriticalSection (&threads_mutex)
+static CRITICAL_SECTION threads_mutex;
-/* The MonoObject associated with the main thread */
-static MonoObject *main_thread;
+/* Controls access to context static data */
+#define mono_contexts_lock() EnterCriticalSection (&contexts_mutex)
+#define mono_contexts_unlock() LeaveCriticalSection (&contexts_mutex)
+static CRITICAL_SECTION contexts_mutex;
-/* The TLS key that holds the MonoObject assigned to each thread */
-static guint32 current_object_key;
+/* Holds current status of static data heap */
+static StaticDataInfo thread_static_info;
+static StaticDataInfo context_static_info;
-/* The TLS key that holds the LocalDataStoreSlot hash in each thread */
-static guint32 slothash_key;
+/* The hash of existing threads (key is thread ID) that need joining
+ * before exit
+ */
+static MonoGHashTable *threads=NULL;
-static guint32 start_wrapper(void *data)
-{
- struct StartInfo *start_info=(struct StartInfo *)data;
- guint32 (*start_func)(void *);
-
-#ifdef THREAD_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": Start wrapper");
+/* The TLS key that holds the MonoObject assigned to each thread */
+static guint32 current_object_key = -1;
+
+#ifdef HAVE_KW_THREAD
+/* we need to use both the Tls* functions and __thread because
+ * the gc needs to see all the threads
+ */
+static __thread MonoThread * tls_current_object MONO_TLS_FAST;
+#define SET_CURRENT_OBJECT(x) do { \
+ tls_current_object = x; \
+ TlsSetValue (current_object_key, x); \
+} while (FALSE)
+#define GET_CURRENT_OBJECT() tls_current_object
+#else
+#define SET_CURRENT_OBJECT(x) TlsSetValue (current_object_key, x);
+#define GET_CURRENT_OBJECT() (MonoThread*) TlsGetValue (current_object_key);
#endif
- /* FIXME: GC problem here with recorded object
- * pointer!
- *
- * This is recorded so CurrentThread can return the
- * Thread object.
- */
- TlsSetValue(current_object_key, start_info->obj);
- start_func=start_info->func;
-
- g_free(start_info);
-
- start_func(NULL);
+/* function called at thread start */
+static MonoThreadStartCB mono_thread_start_cb = NULL;
-#ifdef THREAD_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": Start wrapper terminating");
-#endif
+/* function called at thread attach */
+static MonoThreadAttachCB mono_thread_attach_cb = NULL;
- return(0);
+/* function called at thread cleanup */
+static MonoThreadCleanupFunc mono_thread_cleanup_fn = NULL;
+
+/* The default stack size for each thread */
+static guint32 default_stacksize = 0;
+#define default_stacksize_for_thread(thread) ((thread)->stack_size? (thread)->stack_size: default_stacksize)
+
+static void thread_adjust_static_data (MonoThread *thread);
+static void mono_init_static_data_info (StaticDataInfo *static_data);
+static guint32 mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align);
+static gboolean mono_thread_resume (MonoThread* thread);
+static void mono_thread_start (MonoThread *thread);
+static void signal_thread_state_change (MonoThread *thread);
+
+/* Spin lock for InterlockedXXX 64 bit functions */
+#define mono_interlocked_lock() EnterCriticalSection (&interlocked_mutex)
+#define mono_interlocked_unlock() LeaveCriticalSection (&interlocked_mutex)
+static CRITICAL_SECTION interlocked_mutex;
+
+/* global count of thread interruptions requested */
+static gint32 thread_interruption_requested = 0;
+
+/* Event signaled when a thread changes its background mode */
+static HANDLE background_change_event;
+
+guint32
+mono_thread_get_tls_key (void)
+{
+ return current_object_key;
}
-
-static void handle_store(HANDLE thread)
+
+gint32
+mono_thread_get_tls_offset (void)
{
-#ifdef THREAD_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": thread %p", thread);
-#endif
+ int offset;
+ MONO_THREAD_VAR_OFFSET (tls_current_object,offset);
+ return offset;
+}
+
+/* handle_store() and handle_remove() manage the array of threads that
+ * still need to be waited for when the main thread exits.
+ */
+static void handle_store(MonoThread *thread)
+{
+ mono_threads_lock ();
+
+ THREAD_DEBUG (g_message ("%s: thread %p ID %"G_GSIZE_FORMAT, __func__, thread, (gsize)thread->tid));
- EnterCriticalSection(&threads_mutex);
if(threads==NULL) {
- threads=g_ptr_array_new();
+ MONO_GC_REGISTER_ROOT (threads);
+ threads=mono_g_hash_table_new(NULL, NULL);
}
- g_ptr_array_add(threads, thread);
- LeaveCriticalSection(&threads_mutex);
+
+ /* We don't need to duplicate thread->handle, because it is
+ * only closed when the thread object is finalized by the GC.
+ */
+ mono_g_hash_table_insert(threads, (gpointer)(gsize)(thread->tid),
+ thread);
+
+ mono_threads_unlock ();
}
-static void handle_remove(HANDLE thread)
+static void handle_remove(gsize tid)
{
-#ifdef THREAD_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": thread %p", thread);
-#endif
+ THREAD_DEBUG (g_message ("%s: thread ID %"G_GSIZE_FORMAT, __func__, tid));
+
+ mono_threads_lock ();
+
+
+ if (threads)
+ mono_g_hash_table_remove (threads, (gpointer)tid);
+
+ mono_threads_unlock ();
- EnterCriticalSection(&threads_mutex);
- g_ptr_array_remove_fast(threads, thread);
- LeaveCriticalSection(&threads_mutex);
- CloseHandle(thread);
+ /* Don't close the handle here, wait for the object finalizer
+ * to do it. Otherwise, the following race condition applies:
+ *
+ * 1) Thread exits (and handle_remove() closes the handle)
+ *
+ * 2) Some other handle is reassigned the same slot
+ *
+ * 3) Another thread tries to join the first thread, and
+ * blocks waiting for the reassigned handle to be signalled
+ * (which might never happen). This is possible, because the
+ * thread calling Join() still has a reference to the first
+ * thread's object.
+ */
}
+static void thread_cleanup (MonoThread *thread)
+{
+ g_assert (thread != NULL);
+
+ mono_release_type_locks (thread);
-HANDLE ves_icall_System_Threading_Thread_Thread_internal(MonoObject *this,
- MonoObject *start)
+ if (!mono_monitor_enter (thread->synch_lock))
+ return;
+
+ thread->state |= ThreadState_Stopped;
+ mono_monitor_exit (thread->synch_lock);
+
+ mono_profiler_thread_end (thread->tid);
+ handle_remove (thread->tid);
+
+ mono_thread_pop_appdomain_ref ();
+
+ if (thread->serialized_culture_info)
+ g_free (thread->serialized_culture_info);
+
+ thread->cached_culture_info = NULL;
+
+ if (mono_thread_cleanup_fn)
+ mono_thread_cleanup_fn (thread);
+}
+
+static guint32 WINAPI start_wrapper(void *data)
{
- MonoClassField *field;
+ struct StartInfo *start_info=(struct StartInfo *)data;
guint32 (*start_func)(void *);
- struct StartInfo *start_info;
- HANDLE thread;
- guint32 tid;
-
-#ifdef THREAD_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION
- ": Trying to start a new thread: this (%p) start (%p)",
- this, start);
-#endif
+ void *start_arg;
+ gsize tid;
+ MonoThread *thread=start_info->obj;
+ MonoObject *start_delegate = start_info->delegate;
+
+ THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper", __func__, GetCurrentThreadId ()));
+
+ /* We can be sure start_info->obj->tid and
+ * start_info->obj->handle have been set, because the thread
+ * was created suspended, and these values were set before the
+ * thread resumed
+ */
+
+ tid=thread->tid;
+
+ SET_CURRENT_OBJECT (thread);
- field=mono_class_get_field_from_name(mono_defaults.delegate_class, "method_ptr");
- start_func= *(gpointer *)(((char *)start) + field->offset);
+ if (!mono_domain_set (start_info->domain, FALSE)) {
+ /* No point in raising an appdomain_unloaded exception here */
+ /* FIXME: Cleanup here */
+ return 0;
+ }
+
+ start_func = start_info->func;
+ start_arg = start_info->start_arg;
+
+ /* This MUST be called before any managed code can be
+ * executed, as it calls the callback function that (for the
+ * jit) sets the lmf marker.
+ */
+ mono_thread_new_init (tid, &tid, start_func);
+ thread->stack_ptr = &tid;
+
+ LIBGC_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT",%d) Setting thread stack to %p", __func__, GetCurrentThreadId (), getpid (), thread->stack_ptr));
+
+ THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Setting current_object_key to %p", __func__, GetCurrentThreadId (), thread));
+
+ mono_profiler_thread_start (tid);
+
+ if(thread->start_notify!=NULL) {
+ /* Let the thread that called Start() know we're
+ * ready
+ */
+ ReleaseSemaphore (thread->start_notify, 1, NULL);
+ }
- if(start_func==NULL) {
- g_warning(G_GNUC_PRETTY_FUNCTION
- ": Can't locate start method!");
- return(NULL);
- } else {
- /* This is freed in start_wrapper */
- start_info=g_new0(struct StartInfo, 1);
- start_info->func=start_func;
- start_info->obj=this;
-
- thread=CreateThread(NULL, 0, start_wrapper, start_info,
- CREATE_SUSPENDED, &tid);
- if(thread==NULL) {
- g_warning(G_GNUC_PRETTY_FUNCTION
- ": CreateThread error 0x%x", GetLastError());
- return(NULL);
- }
-
-#ifdef THREAD_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": Started thread ID %d",
- tid);
+ g_free (start_info);
+
+ /* Every thread references the appdomain which created it */
+ mono_thread_push_appdomain_ref (mono_domain_get ());
+
+ thread_adjust_static_data (thread);
+#ifdef DEBUG
+ g_message ("%s: start_wrapper for %"G_GSIZE_FORMAT, __func__,
+ thread->tid);
#endif
- /* Store handle for cleanup later */
- handle_store(thread);
-
- return(thread);
+ /* start_func is set only for unmanaged start functions */
+ if (start_func) {
+ start_func (start_arg);
+ } else {
+ void *args [1];
+ g_assert (start_delegate != NULL);
+ args [0] = start_arg;
+ /* we may want to handle the exception here. See comment below on unhandled exceptions */
+ mono_runtime_delegate_invoke (start_delegate, args, NULL);
}
-}
-void ves_icall_System_Threading_Thread_Start_internal(MonoObject *this,
- HANDLE thread)
-{
-#ifdef THREAD_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": Launching thread %p", this);
-#endif
+ /* If the thread calls ExitThread at all, this remaining code
+ * will not be executed, but the main thread will eventually
+ * call thread_cleanup() on this thread's behalf.
+ */
- ResumeThread(thread);
-}
+ THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Start wrapper terminating", __func__, GetCurrentThreadId ()));
-void ves_icall_System_Threading_Thread_Sleep_internal(gint32 ms)
-{
-#ifdef THREAD_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": Sleeping for %d ms", ms);
-#endif
+ thread_cleanup (thread);
- Sleep(ms);
-}
+ /* Remove the reference to the thread object in the TLS data,
+ * so the thread object can be finalized. This won't be
+ * reached if the thread threw an uncaught exception, so those
+ * thread handles will stay referenced :-( (This is due to
+ * missing support for scanning thread-specific data in the
+ * Boehm GC - the io-layer keeps a GC-visible hash of pointers
+ * to TLS data.)
+ */
+ SET_CURRENT_OBJECT (NULL);
-MonoObject *ves_icall_System_Threading_Thread_CurrentThread_internal(void)
-{
- MonoObject *thread;
-
- /* Find the current thread object */
- thread=TlsGetValue(current_object_key);
- return(thread);
+ return(0);
}
-gboolean ves_icall_System_Threading_Thread_Join_internal(MonoObject *this,
- int ms, HANDLE thread)
+void mono_thread_new_init (gsize tid, gpointer stack_start, gpointer func)
{
- gboolean ret;
-
- if(ms== -1) {
- ms=INFINITE;
- }
-
- ret=WaitForSingleObject(thread, ms);
- if(ret==WAIT_OBJECT_0) {
- /* Clean up the handle */
- handle_remove(thread);
- return(TRUE);
+ if (mono_thread_start_cb) {
+ mono_thread_start_cb (tid, stack_start, func);
}
-
- return(FALSE);
}
-void ves_icall_System_Threading_Thread_SlotHash_store(MonoObject *data)
+void mono_threads_set_default_stacksize (guint32 stacksize)
{
-#ifdef THREAD_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": Storing key %p", data);
-#endif
+ default_stacksize = stacksize;
+}
- /* Object location stored here */
- TlsSetValue(slothash_key, data);
+guint32 mono_threads_get_default_stacksize (void)
+{
+ return default_stacksize;
}
-MonoObject *ves_icall_System_Threading_Thread_SlotHash_lookup(void)
+void mono_thread_create (MonoDomain *domain, gpointer func, gpointer arg)
{
- MonoObject *data;
+ MonoThread *thread;
+ HANDLE thread_handle;
+ struct StartInfo *start_info;
+ gsize tid;
- data=TlsGetValue(slothash_key);
-
-#ifdef THREAD_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": Retrieved key %p", data);
-#endif
+ thread=(MonoThread *)mono_object_new (domain,
+ mono_defaults.thread_class);
+
+ start_info=g_new0 (struct StartInfo, 1);
+ start_info->func = func;
+ start_info->obj = thread;
+ start_info->domain = domain;
+ start_info->start_arg = arg;
- return(data);
+ /* Create suspended, so we can do some housekeeping before the thread
+ * starts
+ */
+ thread_handle = CreateThread(NULL, default_stacksize_for_thread (thread), (LPTHREAD_START_ROUTINE)start_wrapper, start_info,
+ CREATE_SUSPENDED, &tid);
+ THREAD_DEBUG (g_message ("%s: Started thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread_handle));
+ if (thread_handle == NULL) {
+ /* The thread couldn't be created, so throw an exception */
+ mono_raise_exception (mono_get_exception_execution_engine ("Couldn't create thread"));
+ return;
+ }
+
+ thread->handle=thread_handle;
+ thread->tid=tid;
+
+ MONO_OBJECT_SETREF (thread, synch_lock, mono_object_new (domain, mono_defaults.object_class));
+
+ handle_store(thread);
+
+ ResumeThread (thread_handle);
}
-static MonoThreadsSync *mon_new(void)
+MonoThread *
+mono_thread_attach (MonoDomain *domain)
{
- MonoThreadsSync *new;
-
- /* This should be freed when the object that owns it is
- * deleted
+ MonoThread *thread;
+ HANDLE thread_handle;
+ gsize tid;
+
+ if ((thread = mono_thread_current ())) {
+ if (domain != mono_domain_get ())
+ mono_domain_set (domain, TRUE);
+ /* Already attached */
+ return thread;
+ }
+
+ if (!mono_gc_register_thread (&domain)) {
+ g_error ("Thread %"G_GSIZE_FORMAT" calling into managed code is not registered with the GC. On UNIX, this can be fixed by #include-ing <gc.h> before <pthread.h> in the file containing the thread creation code.", GetCurrentThreadId ());
+ }
+
+ thread = (MonoThread *)mono_object_new (domain,
+ mono_defaults.thread_class);
+
+ thread_handle = GetCurrentThread ();
+ g_assert (thread_handle);
+
+ tid=GetCurrentThreadId ();
+
+ /*
+ * The handle returned by GetCurrentThread () is a pseudo handle, so it can't be used to
+ * refer to the thread from other threads for things like aborting.
*/
+ DuplicateHandle (GetCurrentProcess (), thread_handle, GetCurrentProcess (), &thread_handle,
+ THREAD_ALL_ACCESS, TRUE, 0);
- new=(MonoThreadsSync *)g_new0(MonoThreadsSync, 1);
- new->monitor=CreateMutex(NULL, FALSE, NULL);
-#ifdef THREAD_LOCK_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": ThreadsSync mutex created: %p",
- new->monitor);
-#endif
+ thread->handle=thread_handle;
+ thread->tid=tid;
+ thread->stack_ptr = &tid;
+ MONO_OBJECT_SETREF (thread, synch_lock, mono_object_new (domain, mono_defaults.object_class));
- new->waiters_count=0;
- new->was_broadcast=FALSE;
- InitializeCriticalSection(&new->waiters_count_lock);
- new->sema=CreateSemaphore(NULL, 0, 0x7fffffff, NULL);
- new->waiters_done=CreateEvent(NULL, FALSE, FALSE, NULL);
-
- return(new);
+ THREAD_DEBUG (g_message ("%s: Attached thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread_handle));
+
+ handle_store(thread);
+
+ THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Setting current_object_key to %p", __func__, GetCurrentThreadId (), thread));
+
+ SET_CURRENT_OBJECT (thread);
+ mono_domain_set (domain, TRUE);
+
+ thread_adjust_static_data (thread);
+
+ if (mono_thread_attach_cb) {
+ mono_thread_attach_cb (tid, &tid);
+ }
+
+ return(thread);
}
-gboolean ves_icall_System_Threading_Monitor_Monitor_try_enter(MonoObject *obj,
- int ms)
+void
+mono_thread_detach (MonoThread *thread)
{
- MonoThreadsSync *mon;
- guint32 ret;
+ g_return_if_fail (thread != NULL);
+
+ THREAD_DEBUG (g_message ("%s: mono_thread_detach for %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
-#ifdef THREAD_LOCK_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION
- ": Trying to lock %p in thread %d", obj,
- GetCurrentThreadId());
-#endif
+ thread_cleanup (thread);
- EnterCriticalSection(&monitor_mutex);
+ SET_CURRENT_OBJECT (NULL);
- mon=obj->synchronisation;
- if(mon==NULL) {
- mon=mon_new();
- obj->synchronisation=mon;
- }
-
- /* Don't hold the monitor lock while waiting to acquire the
- * object lock
+ /* Don't need to CloseHandle this thread, even though we took a
+ * reference in mono_thread_attach (), because the GC will do it
+ * when the Thread object is finalised.
*/
- LeaveCriticalSection(&monitor_mutex);
-
- /* Acquire the mutex */
-#ifdef THREAD_LOCK_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": Acquiring monitor mutex %p",
- mon->monitor);
-#endif
- ret=WaitForSingleObject(mon->monitor, ms);
- if(ret==WAIT_OBJECT_0) {
- mon->count++;
- mon->tid=GetCurrentThreadId();
-
-#ifdef THREAD_LOCK_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": %p now locked %d times", obj,
- mon->count);
-#endif
+}
- return(TRUE);
- }
+void
+mono_thread_exit ()
+{
+ MonoThread *thread = mono_thread_current ();
- return(FALSE);
+ thread_cleanup (thread);
+ SET_CURRENT_OBJECT (NULL);
+
+ /* we could add a callback here for embedders to use. */
+ if (thread == mono_thread_get_main ())
+ exit (mono_environment_exitcode_get ());
+ ExitThread (-1);
}
-void ves_icall_System_Threading_Monitor_Monitor_exit(MonoObject *obj)
+HANDLE ves_icall_System_Threading_Thread_Thread_internal(MonoThread *this,
+ MonoObject *start)
{
- MonoThreadsSync *mon;
+ guint32 (*start_func)(void *);
+ struct StartInfo *start_info;
+ HANDLE thread;
+ gsize tid;
-#ifdef THREAD_LOCK_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": Unlocking %p in thread %d", obj,
- GetCurrentThreadId());
-#endif
+ MONO_ARCH_SAVE_REGS;
- /* No need to lock monitor_mutex here because we only adjust
- * the monitor state if this thread already owns the lock
- */
- mon=obj->synchronisation;
+ THREAD_DEBUG (g_message("%s: Trying to start a new thread: this (%p) start (%p)", __func__, this, start));
- if(mon==NULL) {
- return;
+ mono_monitor_enter (this->synch_lock);
+
+ if ((this->state & ThreadState_Unstarted) == 0) {
+ mono_monitor_exit (this->synch_lock);
+ mono_raise_exception (mono_get_exception_thread_state ("Thread has already been started."));
+ return NULL;
}
- if(mon->tid!=GetCurrentThreadId()) {
- return;
+ if ((this->state & ThreadState_Aborted) != 0) {
+ mono_monitor_exit (this->synch_lock);
+ return this;
}
-
- mon->count--;
-
-#ifdef THREAD_LOCK_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": %p now locked %d times", obj,
- mon->count);
-#endif
+ start_func = NULL;
+ {
+ /* This is freed in start_wrapper */
+ start_info = g_new0 (struct StartInfo, 1);
+ start_info->func = start_func;
+ start_info->start_arg = this->start_obj; /* FIXME: GC object stored in unmanaged memory */
+ start_info->delegate = start;
+ start_info->obj = this;
+ start_info->domain = mono_domain_get ();
+
+ this->start_notify=CreateSemaphore (NULL, 0, 0x7fffffff, NULL);
+ if(this->start_notify==NULL) {
+ mono_monitor_exit (this->synch_lock);
+ g_warning ("%s: CreateSemaphore error 0x%x", __func__, GetLastError ());
+ return(NULL);
+ }
+
+ thread=CreateThread(NULL, default_stacksize_for_thread (this), (LPTHREAD_START_ROUTINE)start_wrapper, start_info,
+ CREATE_SUSPENDED, &tid);
+ if(thread==NULL) {
+ mono_monitor_exit (this->synch_lock);
+ g_warning("%s: CreateThread error 0x%x", __func__, GetLastError());
+ return(NULL);
+ }
+
+ this->handle=thread;
+ this->tid=tid;
+
+ /* Don't call handle_store() here, delay it to Start.
+ * We can't join a thread (trying to will just block
+ * forever) until it actually starts running, so don't
+ * store the handle till then.
+ */
+
+ mono_thread_start (this);
+
+ this->state &= ~ThreadState_Unstarted;
+
+ THREAD_DEBUG (g_message ("%s: Started thread ID %"G_GSIZE_FORMAT" (handle %p)", __func__, tid, thread));
- if(mon->count==0) {
- mon->tid=0; /* FIXME: check that 0 isnt a valid id */
+ mono_monitor_exit (this->synch_lock);
+ return(thread);
}
-
-#ifdef THREAD_LOCK_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": Releasing mutex %p", mon->monitor);
-#endif
+}
- ReleaseMutex(mon->monitor);
+void ves_icall_System_Threading_Thread_Thread_free_internal (MonoThread *this,
+ HANDLE thread)
+{
+ MONO_ARCH_SAVE_REGS;
+
+ THREAD_DEBUG (g_message ("%s: Closing thread %p, handle %p", __func__, this, thread));
+
+ CloseHandle (thread);
}
-gboolean ves_icall_System_Threading_Monitor_Monitor_test_owner(MonoObject *obj)
+static void mono_thread_start (MonoThread *thread)
{
- MonoThreadsSync *mon;
- gboolean ret=FALSE;
-
-#ifdef THREAD_LOCK_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION
- ": Testing if %p is owned by thread %d", obj,
- GetCurrentThreadId());
-#endif
+ MONO_ARCH_SAVE_REGS;
- EnterCriticalSection(&monitor_mutex);
-
- mon=obj->synchronisation;
- if(mon==NULL) {
- goto finished;
- }
+ THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Launching thread %p (%"G_GSIZE_FORMAT")", __func__, GetCurrentThreadId (), thread, (gsize)thread->tid));
+
+ /* Only store the handle when the thread is about to be
+ * launched, to avoid the main thread deadlocking while trying
+ * to clean up a thread that will never be signalled.
+ */
+ handle_store (thread);
+
+ ResumeThread (thread->handle);
+
+ if(thread->start_notify!=NULL) {
+ /* Wait for the thread to set up its TLS data etc, so
+ * theres no potential race condition if someone tries
+ * to look up the data believing the thread has
+ * started
+ */
+
+ THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") waiting for thread %p (%"G_GSIZE_FORMAT") to start", __func__, GetCurrentThreadId (), thread, (gsize)thread->tid));
- if(mon->tid!=GetCurrentThreadId()) {
- goto finished;
+ WaitForSingleObjectEx (thread->start_notify, INFINITE, FALSE);
+ CloseHandle (thread->start_notify);
+ thread->start_notify = NULL;
}
-
- ret=TRUE;
-
-finished:
- LeaveCriticalSection(&monitor_mutex);
- return(ret);
+ THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Done launching thread %p (%"G_GSIZE_FORMAT")", __func__, GetCurrentThreadId (), thread, (gsize)thread->tid));
}
-gboolean ves_icall_System_Threading_Monitor_Monitor_test_synchronised(MonoObject *obj)
+void ves_icall_System_Threading_Thread_Sleep_internal(gint32 ms)
{
- MonoThreadsSync *mon;
- gboolean ret=FALSE;
+ MonoThread *thread = mono_thread_current ();
-#ifdef THREAD_LOCK_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION
- ": Testing if %p is owned by any thread", obj);
-#endif
+ MONO_ARCH_SAVE_REGS;
- EnterCriticalSection(&monitor_mutex);
-
- mon=obj->synchronisation;
- if(mon==NULL) {
- goto finished;
- }
+ THREAD_DEBUG (g_message ("%s: Sleeping for %d ms", __func__, ms));
- if(mon->tid==0) {
- goto finished;
- }
+ mono_thread_current_check_pending_interrupt ();
- g_assert(mon->count);
+ mono_monitor_enter (thread->synch_lock);
+ thread->state |= ThreadState_WaitSleepJoin;
+ mono_monitor_exit (thread->synch_lock);
- ret=TRUE;
+ SleepEx(ms,TRUE);
-finished:
- LeaveCriticalSection(&monitor_mutex);
-
- return(ret);
+ mono_monitor_enter (thread->synch_lock);
+ thread->state &= ~ThreadState_WaitSleepJoin;
+ mono_monitor_exit (thread->synch_lock);
}
-
-void ves_icall_System_Threading_Monitor_Monitor_pulse(MonoObject *obj)
+void ves_icall_System_Threading_Thread_SpinWait_internal (gint32 iterations)
{
- gboolean have_waiters;
- MonoThreadsSync *mon;
-
-#ifdef THREAD_LOCK_DEBUG
- g_message("Pulsing %p in thread %d", obj, GetCurrentThreadId());
-#endif
-
- EnterCriticalSection(&monitor_mutex);
+ gint32 i;
- mon=obj->synchronisation;
- if(mon==NULL) {
- LeaveCriticalSection(&monitor_mutex);
- return;
+ for(i = 0; i < iterations; i++) {
+ /* We're busy waiting, but at least we can tell the
+ * scheduler to let someone else have a go...
+ */
+ Sleep (0);
}
+}
- if(mon->tid!=GetCurrentThreadId()) {
- LeaveCriticalSection(&monitor_mutex);
- return;
- }
- LeaveCriticalSection(&monitor_mutex);
-
- EnterCriticalSection(&mon->waiters_count_lock);
- have_waiters=(mon->waiters_count>0);
- LeaveCriticalSection(&mon->waiters_count_lock);
-
- if(have_waiters==TRUE) {
- ReleaseSemaphore(mon->sema, 1, 0);
- }
+gint32
+ves_icall_System_Threading_Thread_GetDomainID (void)
+{
+ MONO_ARCH_SAVE_REGS;
+
+ return mono_domain_get()->domain_id;
}
-void ves_icall_System_Threading_Monitor_Monitor_pulse_all(MonoObject *obj)
+MonoString*
+ves_icall_System_Threading_Thread_GetName_internal (MonoThread *this_obj)
{
- gboolean have_waiters=FALSE;
- MonoThreadsSync *mon;
+ MonoString* str;
+ mono_monitor_enter (this_obj->synch_lock);
-#ifdef THREAD_LOCK_DEBUG
- g_message("Pulsing all %p", obj);
-#endif
-
- EnterCriticalSection(&monitor_mutex);
+ if (!this_obj->name)
+ str = NULL;
+ else
+ str = mono_string_new_utf16 (mono_domain_get (), this_obj->name, this_obj->name_len);
- mon=obj->synchronisation;
- if(mon==NULL) {
- LeaveCriticalSection(&monitor_mutex);
- return;
- }
+ mono_monitor_exit (this_obj->synch_lock);
+ return str;
+}
- if(mon->tid!=GetCurrentThreadId()) {
- LeaveCriticalSection(&monitor_mutex);
+void
+ves_icall_System_Threading_Thread_SetName_internal (MonoThread *this_obj, MonoString *name)
+{
+ mono_monitor_enter (this_obj->synch_lock);
+
+ if (this_obj->name) {
+ mono_monitor_exit (this_obj->synch_lock);
+ mono_raise_exception (mono_get_exception_invalid_operation ("Thread.Name can only be set once."));
return;
}
- LeaveCriticalSection(&monitor_mutex);
-
- EnterCriticalSection(&mon->waiters_count_lock);
- if(mon->waiters_count>0) {
- mon->was_broadcast=TRUE;
- have_waiters=TRUE;
+ if (name) {
+ this_obj->name = g_new (gunichar2, mono_string_length (name));
+ memcpy (this_obj->name, mono_string_chars (name), mono_string_length (name) * 2);
+ this_obj->name_len = mono_string_length (name);
}
+ else
+ this_obj->name = NULL;
- if(have_waiters==TRUE) {
- ReleaseSemaphore(mon->sema, mon->waiters_count, 0);
-
- LeaveCriticalSection(&mon->waiters_count_lock);
-
- WaitForSingleObject(mon->waiters_done, INFINITE);
- mon->was_broadcast=FALSE;
- } else {
- LeaveCriticalSection(&mon->waiters_count_lock);
+ mono_monitor_exit (this_obj->synch_lock);
+}
+
+static MonoObject*
+lookup_cached_culture (MonoThread *this, MonoDomain *domain, int start_idx)
+{
+ MonoObject *res;
+ int i;
+
+ if (this->cached_culture_info) {
+ domain = mono_domain_get ();
+ for (i = start_idx; i < start_idx + NUM_CACHED_CULTURES; ++i) {
+ res = mono_array_get (this->cached_culture_info, MonoObject*, i);
+ if (res && res->vtable->domain == domain)
+ return res;
+ }
}
+
+ return NULL;
}
-gboolean ves_icall_System_Threading_Monitor_Monitor_wait(MonoObject *obj,
- int ms)
+MonoObject*
+ves_icall_System_Threading_Thread_GetCachedCurrentCulture (MonoThread *this)
{
- gboolean last_waiter;
- MonoThreadsSync *mon;
- guint32 save_count;
-
-#ifdef THREAD_LOCK_DEBUG
- g_message("Trying to wait for %p in thread %d with timeout %dms", obj,
- GetCurrentThreadId(), ms);
-#endif
+ return lookup_cached_culture (this, mono_domain_get (), CULTURES_START_IDX);
+}
- EnterCriticalSection(&monitor_mutex);
-
- mon=obj->synchronisation;
- if(mon==NULL) {
- LeaveCriticalSection(&monitor_mutex);
- return(FALSE);
- }
+MonoArray*
+ves_icall_System_Threading_Thread_GetSerializedCurrentCulture (MonoThread *this)
+{
+ MonoArray *res;
- if(mon->tid!=GetCurrentThreadId()) {
- LeaveCriticalSection(&monitor_mutex);
- return(FALSE);
+ mono_monitor_enter (this->synch_lock);
+ if (this->serialized_culture_info) {
+ res = mono_array_new (mono_domain_get (), mono_defaults.byte_class, this->serialized_culture_info_len);
+ memcpy (mono_array_addr (res, guint8, 0), this->serialized_culture_info, this->serialized_culture_info_len);
+ } else {
+ res = NULL;
}
- LeaveCriticalSection(&monitor_mutex);
-
- EnterCriticalSection(&mon->waiters_count_lock);
- mon->waiters_count++;
- LeaveCriticalSection(&mon->waiters_count_lock);
-
-#ifdef THREAD_LOCK_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": %p locked %d times", obj,
- mon->count);
-#endif
+ mono_monitor_exit (this->synch_lock);
- /* We need to put the lock count back afterwards */
- save_count=mon->count;
-
- while(mon->count>1) {
-#ifdef THREAD_LOCK_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": Releasing mutex %p",
- mon->monitor);
-#endif
+ return res;
+}
+
+static void
+cache_culture (MonoThread *this, MonoObject *culture, int start_idx)
+{
+ int i;
+ MonoDomain *domain = mono_domain_get ();
+ MonoObject *obj;
+ int free_slot = -1;
+ int same_domain_slot = -1;
+
+ mono_monitor_enter (this->synch_lock);
+ if (!this->cached_culture_info)
+ this->cached_culture_info = mono_array_new (mono_object_domain (this), mono_defaults.object_class, NUM_CACHED_CULTURES * 2);
+
+ for (i = start_idx; i < start_idx + NUM_CACHED_CULTURES; ++i) {
+ obj = mono_array_get (this->cached_culture_info, MonoObject*, i);
+ /* Free entry */
+ if (!obj) {
+ free_slot = i;
+ /* we continue, because there may be a slot used with the same domain */
+ continue;
+ }
+ /* Replace */
+ if (obj->vtable->domain == domain) {
+ same_domain_slot = i;
+ break;
+ }
+ }
+ if (same_domain_slot >= 0)
+ mono_array_setref (this->cached_culture_info, same_domain_slot, culture);
+ else if (free_slot >= 0)
+ mono_array_setref (this->cached_culture_info, free_slot, culture);
+ /* we may want to replace an existing entry here, even when no suitable slot is found */
+ mono_monitor_exit (this->synch_lock);
+}
+
+void
+ves_icall_System_Threading_Thread_SetCachedCurrentCulture (MonoThread *this, MonoObject *culture)
+{
+ cache_culture (this, culture, CULTURES_START_IDX);
+}
- ReleaseMutex(mon->monitor);
- mon->count--;
+void
+ves_icall_System_Threading_Thread_SetSerializedCurrentCulture (MonoThread *this, MonoArray *arr)
+{
+ mono_monitor_enter (this->synch_lock);
+ if (this->serialized_culture_info)
+ g_free (this->serialized_culture_info);
+ this->serialized_culture_info = g_new0 (guint8, mono_array_length (arr));
+ this->serialized_culture_info_len = mono_array_length (arr);
+ memcpy (this->serialized_culture_info, mono_array_addr (arr, guint8, 0), mono_array_length (arr));
+ mono_monitor_exit (this->synch_lock);
+}
+
+
+MonoObject*
+ves_icall_System_Threading_Thread_GetCachedCurrentUICulture (MonoThread *this)
+{
+ return lookup_cached_culture (this, mono_domain_get (), UICULTURES_START_IDX);
+}
+
+MonoArray*
+ves_icall_System_Threading_Thread_GetSerializedCurrentUICulture (MonoThread *this)
+{
+ MonoArray *res;
+
+ mono_monitor_enter (this->synch_lock);
+ if (this->serialized_ui_culture_info) {
+ res = mono_array_new (mono_domain_get (), mono_defaults.byte_class, this->serialized_ui_culture_info_len);
+ memcpy (mono_array_addr (res, guint8, 0), this->serialized_ui_culture_info, this->serialized_ui_culture_info_len);
+ } else {
+ res = NULL;
}
+ mono_monitor_exit (this->synch_lock);
+
+ return res;
+}
+
+void
+ves_icall_System_Threading_Thread_SetCachedCurrentUICulture (MonoThread *this, MonoObject *culture)
+{
+ cache_culture (this, culture, UICULTURES_START_IDX);
+}
+
+void
+ves_icall_System_Threading_Thread_SetSerializedCurrentUICulture (MonoThread *this, MonoArray *arr)
+{
+ mono_monitor_enter (this->synch_lock);
+ if (this->serialized_ui_culture_info)
+ g_free (this->serialized_ui_culture_info);
+ this->serialized_ui_culture_info = g_new0 (guint8, mono_array_length (arr));
+ this->serialized_ui_culture_info_len = mono_array_length (arr);
+ memcpy (this->serialized_ui_culture_info, mono_array_addr (arr, guint8, 0), mono_array_length (arr));
+ mono_monitor_exit (this->synch_lock);
+}
+
+/* the jit may read the compiled code of this function */
+MonoThread *
+mono_thread_current (void)
+{
+ THREAD_DEBUG (g_message ("%s: returning %p", __func__, GET_CURRENT_OBJECT ()));
+ return GET_CURRENT_OBJECT ();
+}
+
+gboolean ves_icall_System_Threading_Thread_Join_internal(MonoThread *this,
+ int ms, HANDLE thread)
+{
+ gboolean ret;
- /* We're releasing this mutex */
- mon->count=0;
- mon->tid=0;
-#ifdef THREAD_LOCK_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": Signalling monitor mutex %p",
- mon->monitor);
-#endif
+ MONO_ARCH_SAVE_REGS;
- SignalObjectAndWait(mon->monitor, mon->sema, INFINITE, FALSE);
+ mono_monitor_enter (this->synch_lock);
- EnterCriticalSection(&mon->waiters_count_lock);
- mon->waiters_count++;
- last_waiter=mon->was_broadcast && mon->waiters_count==0;
- LeaveCriticalSection(&mon->waiters_count_lock);
+ if ((this->state & ThreadState_Unstarted) != 0) {
+ mono_monitor_exit (this->synch_lock);
+ mono_raise_exception (mono_get_exception_thread_state ("Thread has not been started."));
+ return FALSE;
+ }
- if(last_waiter) {
-#ifdef THREAD_LOCK_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": Waiting for monitor mutex %p",
- mon->monitor);
-#endif
- SignalObjectAndWait(mon->waiters_done, mon->monitor, INFINITE, FALSE);
- } else {
-#ifdef THREAD_LOCK_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": Waiting for monitor mutex %p",
- mon->monitor);
-#endif
- WaitForSingleObject(mon->monitor, INFINITE);
+ mono_thread_current_check_pending_interrupt ();
+
+ this->state |= ThreadState_WaitSleepJoin;
+ mono_monitor_exit (this->synch_lock);
+
+ if(ms== -1) {
+ ms=INFINITE;
}
+ THREAD_DEBUG (g_message ("%s: joining thread handle %p, %d ms", __func__, thread, ms));
+
+ ret=WaitForSingleObjectEx (thread, ms, TRUE);
- /* We've reclaimed this mutex */
- mon->count=save_count;
- mon->tid=GetCurrentThreadId();
+ mono_monitor_enter (this->synch_lock);
+ this->state &= ~ThreadState_WaitSleepJoin;
+ mono_monitor_exit (this->synch_lock);
+
+ if(ret==WAIT_OBJECT_0) {
+ THREAD_DEBUG (g_message ("%s: join successful", __func__));
- /* Lock the mutex the required number of times */
- while(save_count>1) {
-#ifdef THREAD_LOCK_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION
- ": Waiting for monitor mutex %p", mon->monitor);
-#endif
- WaitForSingleObject(mon->monitor, INFINITE);
- save_count--;
+ return(TRUE);
}
-#ifdef THREAD_LOCK_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": %p still locked %d times", obj,
- mon->count);
-#endif
-
- return(TRUE);
+ THREAD_DEBUG (g_message ("%s: join failed", __func__));
+
+ return(FALSE);
}
/* FIXME: exitContext isnt documented */
guint32 numhandles;
guint32 ret;
guint32 i;
-
- numhandles=mono_array_length(mono_handles);
- handles=g_new0(HANDLE, numhandles);
- for(i=0; i<numhandles; i++) {
- handles[i]=mono_array_get(mono_handles, HANDLE, i);
+ MonoObject *waitHandle;
+ MonoClass *klass;
+ MonoThread *thread = mono_thread_current ();
+
+ MONO_ARCH_SAVE_REGS;
+
+ /* Do this WaitSleepJoin check before creating objects */
+ mono_thread_current_check_pending_interrupt ();
+
+ numhandles = mono_array_length(mono_handles);
+ handles = g_new0(HANDLE, numhandles);
+
+ if (wait_handle_os_handle_field == 0) {
+ /* Get the field os_handle which will contain the actual handle */
+ klass = mono_class_from_name(mono_defaults.corlib, "System.Threading", "WaitHandle");
+ wait_handle_os_handle_field = mono_class_get_field_from_name(klass, "os_handle");
+ }
+
+ for(i = 0; i < numhandles; i++) {
+ waitHandle = mono_array_get(mono_handles, MonoObject*, i);
+ mono_field_get_value(waitHandle, wait_handle_os_handle_field, &handles[i]);
}
if(ms== -1) {
ms=INFINITE;
}
+
+ mono_monitor_enter (thread->synch_lock);
+ thread->state |= ThreadState_WaitSleepJoin;
+ mono_monitor_exit (thread->synch_lock);
- ret=WaitForMultipleObjects(numhandles, handles, TRUE, ms);
+ ret=WaitForMultipleObjectsEx(numhandles, handles, TRUE, ms, TRUE);
+
+ mono_monitor_enter (thread->synch_lock);
+ thread->state &= ~ThreadState_WaitSleepJoin;
+ mono_monitor_exit (thread->synch_lock);
g_free(handles);
-
+
if(ret==WAIT_FAILED) {
-#ifdef THREAD_WAIT_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": Wait failed");
-#endif
+ THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Wait failed", __func__, GetCurrentThreadId ()));
return(FALSE);
- } else if(ret==WAIT_TIMEOUT) {
-#ifdef THREAD_WAIT_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": Wait timed out");
-#endif
+ } else if(ret==WAIT_TIMEOUT || ret == WAIT_IO_COMPLETION) {
+ /* Do we want to try again if we get
+ * WAIT_IO_COMPLETION? The documentation for
+ * WaitHandle doesn't give any clues. (We'd have to
+ * fiddle with the timeout if we retry.)
+ */
+ THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Wait timed out", __func__, GetCurrentThreadId ()));
return(FALSE);
}
guint32 numhandles;
guint32 ret;
guint32 i;
-
- numhandles=mono_array_length(mono_handles);
- handles=g_new0(HANDLE, numhandles);
- for(i=0; i<numhandles; i++) {
- handles[i]=mono_array_get(mono_handles, HANDLE, i);
+ MonoObject *waitHandle;
+ MonoClass *klass;
+ MonoThread *thread = mono_thread_current ();
+
+ MONO_ARCH_SAVE_REGS;
+
+ /* Do this WaitSleepJoin check before creating objects */
+ mono_thread_current_check_pending_interrupt ();
+
+ numhandles = mono_array_length(mono_handles);
+ handles = g_new0(HANDLE, numhandles);
+
+ if (wait_handle_os_handle_field == 0) {
+ /* Get the field os_handle which will contain the actual handle */
+ klass = mono_class_from_name(mono_defaults.corlib, "System.Threading", "WaitHandle");
+ wait_handle_os_handle_field = mono_class_get_field_from_name(klass, "os_handle");
+ }
+
+ for(i = 0; i < numhandles; i++) {
+ waitHandle = mono_array_get(mono_handles, MonoObject*, i);
+ mono_field_get_value(waitHandle, wait_handle_os_handle_field, &handles[i]);
}
if(ms== -1) {
ms=INFINITE;
}
- ret=WaitForMultipleObjects(numhandles, handles, FALSE, ms);
+ mono_monitor_enter (thread->synch_lock);
+ thread->state |= ThreadState_WaitSleepJoin;
+ mono_monitor_exit (thread->synch_lock);
+
+ ret=WaitForMultipleObjectsEx(numhandles, handles, FALSE, ms, TRUE);
+
+ mono_monitor_enter (thread->synch_lock);
+ thread->state &= ~ThreadState_WaitSleepJoin;
+ mono_monitor_exit (thread->synch_lock);
g_free(handles);
-
-#ifdef THREAD_WAIT_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": returning %d", ret);
-#endif
- return(ret);
+ THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") returning %d", __func__, GetCurrentThreadId (), ret));
+
+ /*
+ * These need to be here. See MSDN dos on WaitForMultipleObjects.
+ */
+ if (ret >= WAIT_OBJECT_0 && ret <= WAIT_OBJECT_0 + numhandles - 1) {
+ return ret - WAIT_OBJECT_0;
+ }
+ else if (ret >= WAIT_ABANDONED_0 && ret <= WAIT_ABANDONED_0 + numhandles - 1) {
+ return ret - WAIT_ABANDONED_0;
+ }
+ else {
+ return ret;
+ }
}
/* FIXME: exitContext isnt documented */
gboolean ves_icall_System_Threading_WaitHandle_WaitOne_internal(MonoObject *this, HANDLE handle, gint32 ms, gboolean exitContext)
{
guint32 ret;
+ MonoThread *thread = mono_thread_current ();
-#ifdef THREAD_WAIT_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": waiting for %p", handle);
-#endif
+ MONO_ARCH_SAVE_REGS;
+
+ THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") waiting for %p, %d ms", __func__, GetCurrentThreadId (), handle, ms));
if(ms== -1) {
ms=INFINITE;
}
- ret=WaitForSingleObject(handle, ms);
+ mono_thread_current_check_pending_interrupt ();
+
+ mono_monitor_enter (thread->synch_lock);
+ thread->state |= ThreadState_WaitSleepJoin;
+ mono_monitor_exit (thread->synch_lock);
+
+ ret=WaitForSingleObjectEx (handle, ms, TRUE);
+
+ mono_monitor_enter (thread->synch_lock);
+ thread->state &= ~ThreadState_WaitSleepJoin;
+ mono_monitor_exit (thread->synch_lock);
+
if(ret==WAIT_FAILED) {
-#ifdef THREAD_WAIT_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": Wait failed");
-#endif
+ THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Wait failed", __func__, GetCurrentThreadId ()));
return(FALSE);
- } else if(ret==WAIT_TIMEOUT) {
-#ifdef THREAD_WAIT_DEBUG
- g_message(G_GNUC_PRETTY_FUNCTION ": Wait timed out");
-#endif
+ } else if(ret==WAIT_TIMEOUT || ret == WAIT_IO_COMPLETION) {
+ /* Do we want to try again if we get
+ * WAIT_IO_COMPLETION? The documentation for
+ * WaitHandle doesn't give any clues. (We'd have to
+ * fiddle with the timeout if we retry.)
+ */
+ THREAD_WAIT_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Wait timed out", __func__, GetCurrentThreadId ()));
return(FALSE);
}
return(TRUE);
}
-HANDLE ves_icall_System_Threading_Mutex_CreateMutex_internal (MonoBoolean owned,char *name) {
- return(CreateMutex(NULL,owned,name));
+HANDLE ves_icall_System_Threading_Mutex_CreateMutex_internal (MonoBoolean owned, MonoString *name, MonoBoolean *created)
+{
+ HANDLE mutex;
+
+ MONO_ARCH_SAVE_REGS;
+
+ *created = TRUE;
+
+ if (name == NULL) {
+ mutex = CreateMutex (NULL, owned, NULL);
+ } else {
+ mutex = CreateMutex (NULL, owned, mono_string_chars (name));
+
+ if (GetLastError () == ERROR_ALREADY_EXISTS) {
+ *created = FALSE;
+ }
+ }
+
+ return(mutex);
}
void ves_icall_System_Threading_Mutex_ReleaseMutex_internal (HANDLE handle ) {
+ MONO_ARCH_SAVE_REGS;
+
ReleaseMutex(handle);
}
-\r
-HANDLE ves_icall_System_Threading_Events_CreateEvent_internal (MonoBoolean manual,\r
- MonoBoolean initial,\r
- char *name) {\r
- return (CreateEvent(NULL,manual,initial,name));\r
-}\r
-\r
-gboolean ves_icall_System_Threading_Events_SetEvent_internal (HANDLE handle) {\r
- return (SetEvent(handle));\r
-}\r
-gboolean ves_icall_System_Threading_Events_ResetEvent_internal (HANDLE handle) {\r
- return (ResetEvent(handle));\r
-}\r
+HANDLE ves_icall_System_Threading_Mutex_OpenMutex_internal (MonoString *name,
+ gint32 rights,
+ gint32 *error)
+{
+ HANDLE ret;
+
+ MONO_ARCH_SAVE_REGS;
+
+ *error = ERROR_SUCCESS;
+
+ ret = OpenMutex (rights, FALSE, mono_string_chars (name));
+ if (ret == NULL) {
+ *error = GetLastError ();
+ }
+
+ return(ret);
+}
+
+
+HANDLE ves_icall_System_Threading_Semaphore_CreateSemaphore_internal (gint32 initialCount, gint32 maximumCount, MonoString *name, MonoBoolean *created)
+{
+ HANDLE sem;
+
+ MONO_ARCH_SAVE_REGS;
+
+ *created = TRUE;
+
+ if (name == NULL) {
+ sem = CreateSemaphore (NULL, initialCount, maximumCount, NULL);
+ } else {
+ sem = CreateSemaphore (NULL, initialCount, maximumCount,
+ mono_string_chars (name));
+
+ if (GetLastError () == ERROR_ALREADY_EXISTS) {
+ *created = FALSE;
+ }
+ }
+
+ return(sem);
+}
+
+gint32 ves_icall_System_Threading_Semaphore_ReleaseSemaphore_internal (HANDLE handle, gint32 releaseCount, MonoBoolean *fail)
+{
+ gint32 prevcount;
+
+ MONO_ARCH_SAVE_REGS;
+
+ *fail = !ReleaseSemaphore (handle, releaseCount, &prevcount);
+
+ return (prevcount);
+}
-void mono_thread_init(MonoDomain *domain)
+HANDLE ves_icall_System_Threading_Semaphore_OpenSemaphore_internal (MonoString *name, gint32 rights, gint32 *error)
{
- MonoClass *thread_class;
+ HANDLE ret;
- /* Build a System.Threading.Thread object instance to return
- * for the main line's Thread.CurrentThread property.
- */
- thread_class=mono_class_from_name(mono_defaults.corlib, "System.Threading", "Thread");
+ MONO_ARCH_SAVE_REGS;
- /* I wonder what happens if someone tries to destroy this
- * object? In theory, I guess the whole program should act as
- * though exit() were called :-)
- */
- main_thread = mono_object_new (domain, thread_class);
+ *error = ERROR_SUCCESS;
+
+ ret = OpenSemaphore (rights, FALSE, mono_string_chars (name));
+ if (ret == NULL) {
+ *error = GetLastError ();
+ }
+
+ return(ret);
+}
- InitializeCriticalSection(&threads_mutex);
- InitializeCriticalSection(&monitor_mutex);
+HANDLE ves_icall_System_Threading_Events_CreateEvent_internal (MonoBoolean manual, MonoBoolean initial, MonoString *name, MonoBoolean *created)
+{
+ HANDLE event;
- current_object_key=TlsAlloc();
- TlsSetValue(current_object_key, main_thread);
+ MONO_ARCH_SAVE_REGS;
+
+ *created = TRUE;
+
+ if (name == NULL) {
+ event = CreateEvent (NULL, manual, initial, NULL);
+ } else {
+ event = CreateEvent (NULL, manual, initial,
+ mono_string_chars (name));
+
+ if (GetLastError () == ERROR_ALREADY_EXISTS) {
+ *created = FALSE;
+ }
+ }
+
+ return(event);
+}
+
+gboolean ves_icall_System_Threading_Events_SetEvent_internal (HANDLE handle) {
+ MONO_ARCH_SAVE_REGS;
+
+ return (SetEvent(handle));
+}
+
+gboolean ves_icall_System_Threading_Events_ResetEvent_internal (HANDLE handle) {
+ MONO_ARCH_SAVE_REGS;
+
+ return (ResetEvent(handle));
+}
+
+void
+ves_icall_System_Threading_Events_CloseEvent_internal (HANDLE handle) {
+ MONO_ARCH_SAVE_REGS;
- slothash_key=TlsAlloc();
+ CloseHandle (handle);
}
-void mono_thread_cleanup(void)
+HANDLE ves_icall_System_Threading_Events_OpenEvent_internal (MonoString *name,
+ gint32 rights,
+ gint32 *error)
{
- HANDLE wait[MAXIMUM_WAIT_OBJECTS];
- guint32 i, j;
+ HANDLE ret;
- /* join each thread that's still running */
-#ifdef THREAD_DEBUG
- g_message("Joining each running thread...");
-#endif
+ MONO_ARCH_SAVE_REGS;
- if(threads==NULL) {
-#ifdef THREAD_DEBUG
- g_message("No threads");
-#endif
- return;
+ *error = ERROR_SUCCESS;
+
+ ret = OpenEvent (rights, FALSE, mono_string_chars (name));
+ if (ret == NULL) {
+ *error = GetLastError ();
}
- /* This isnt the right way to do it.
- *
- * The first method call should be started in its own thread,
- * and then the main thread should poll an event and wait for
- * any terminated threads, until there are none left.
+ return(ret);
+}
+
+gint32 ves_icall_System_Threading_Interlocked_Increment_Int (gint32 *location)
+{
+ MONO_ARCH_SAVE_REGS;
+
+ return InterlockedIncrement (location);
+}
+
+gint64 ves_icall_System_Threading_Interlocked_Increment_Long (gint64 *location)
+{
+ gint64 ret;
+
+ MONO_ARCH_SAVE_REGS;
+
+ mono_interlocked_lock ();
+
+ ret = ++ *location;
+
+ mono_interlocked_unlock ();
+
+
+ return ret;
+}
+
+gint32 ves_icall_System_Threading_Interlocked_Decrement_Int (gint32 *location)
+{
+ MONO_ARCH_SAVE_REGS;
+
+ return InterlockedDecrement(location);
+}
+
+gint64 ves_icall_System_Threading_Interlocked_Decrement_Long (gint64 * location)
+{
+ gint64 ret;
+
+ MONO_ARCH_SAVE_REGS;
+
+ mono_interlocked_lock ();
+
+ ret = -- *location;
+
+ mono_interlocked_unlock ();
+
+ return ret;
+}
+
+gint32 ves_icall_System_Threading_Interlocked_Exchange_Int (gint32 *location, gint32 value)
+{
+ MONO_ARCH_SAVE_REGS;
+
+ return InterlockedExchange(location, value);
+}
+
+MonoObject * ves_icall_System_Threading_Interlocked_Exchange_Object (MonoObject **location, MonoObject *value)
+{
+ MONO_ARCH_SAVE_REGS;
+
+ return (MonoObject *) InterlockedExchangePointer((gpointer *) location, value);
+}
+
+gfloat ves_icall_System_Threading_Interlocked_Exchange_Single (gfloat *location, gfloat value)
+{
+ IntFloatUnion val, ret;
+
+ MONO_ARCH_SAVE_REGS;
+
+ val.fval = value;
+ ret.ival = InterlockedExchange((gint32 *) location, val.ival);
+
+ return ret.fval;
+}
+
+gint64
+ves_icall_System_Threading_Interlocked_Exchange_Long (gint64 *location, gint64 value)
+{
+#if SIZEOF_VOID_P == 8
+ return (gint64) InterlockedExchangePointer((gpointer *) location, (gpointer)value);
+#else
+ gint64 res;
+
+ /*
+ * According to MSDN, this function is only atomic with regards to the
+ * other Interlocked functions on 32 bit platforms.
*/
-#ifdef THREAD_DEBUG
- g_message("There are %d threads to join", threads->len);
+ mono_interlocked_lock ();
+ res = *location;
+ *location = value;
+ mono_interlocked_unlock ();
+
+ return res;
#endif
+}
+
+gdouble
+ves_icall_System_Threading_Interlocked_Exchange_Double (gdouble *location, gdouble value)
+{
+#if SIZEOF_VOID_P == 8
+ LongDoubleUnion val, ret;
- for(i=0; i<threads->len; i+=MAXIMUM_WAIT_OBJECTS) {
- for(j=0; j<MAXIMUM_WAIT_OBJECTS && i+j<threads->len; j++) {
-#ifdef THREAD_DEBUG
- g_message("Waiting for threads %d in slot %d", i+j, j);
+ val.fval = value;
+ ret.ival = (gint64)InterlockedExchangePointer((gpointer *) location, (gpointer)val.ival);
+
+ return ret.fval;
+#else
+ gdouble res;
+
+ /*
+ * According to MSDN, this function is only atomic with regards to the
+ * other Interlocked functions on 32 bit platforms.
+ */
+ mono_interlocked_lock ();
+ res = *location;
+ *location = value;
+ mono_interlocked_unlock ();
+
+ return res;
#endif
- wait[j]=g_ptr_array_index(threads, i+j);
- }
-#ifdef THREAD_DEBUG
- g_message("%d threads to wait for in this batch", j);
+}
+
+gint32 ves_icall_System_Threading_Interlocked_CompareExchange_Int(gint32 *location, gint32 value, gint32 comparand)
+{
+ MONO_ARCH_SAVE_REGS;
+
+ return InterlockedCompareExchange(location, value, comparand);
+}
+
+MonoObject * ves_icall_System_Threading_Interlocked_CompareExchange_Object (MonoObject **location, MonoObject *value, MonoObject *comparand)
+{
+ MONO_ARCH_SAVE_REGS;
+
+ return (MonoObject *) InterlockedCompareExchangePointer((gpointer *) location, value, comparand);
+}
+
+gfloat ves_icall_System_Threading_Interlocked_CompareExchange_Single (gfloat *location, gfloat value, gfloat comparand)
+{
+ IntFloatUnion val, ret, cmp;
+
+ MONO_ARCH_SAVE_REGS;
+
+ val.fval = value;
+ cmp.fval = comparand;
+ ret.ival = InterlockedCompareExchange((gint32 *) location, val.ival, cmp.ival);
+
+ return ret.fval;
+}
+
+gdouble
+ves_icall_System_Threading_Interlocked_CompareExchange_Double (gdouble *location, gdouble value, gdouble comparand)
+{
+#if SIZEOF_VOID_P == 8
+ LongDoubleUnion val, comp, ret;
+
+ val.fval = value;
+ comp.fval = comparand;
+ ret.ival = (gint64)InterlockedCompareExchangePointer((gpointer *) location, (gpointer)val.ival, (gpointer)comp.ival);
+
+ return ret.fval;
+#else
+ gdouble old;
+
+ mono_interlocked_lock ();
+ old = *location;
+ if (old == comparand)
+ *location = value;
+ mono_interlocked_unlock ();
+
+ return old;
#endif
+}
- WaitForMultipleObjects(j, wait, TRUE, INFINITE);
- }
-
- g_ptr_array_free(threads, FALSE);
- threads=NULL;
+gint64
+ves_icall_System_Threading_Interlocked_CompareExchange_Long (gint64 *location, gint64 value, gint64 comparand)
+{
+#if SIZEOF_VOID_P == 8
+ return (gint64)InterlockedCompareExchangePointer((gpointer *) location, (gpointer)value, (gpointer)comparand);
+#else
+ gint64 old;
+
+ mono_interlocked_lock ();
+ old = *location;
+ if (old == comparand)
+ *location = value;
+ mono_interlocked_unlock ();
+
+ return old;
+#endif
+}
+
+MonoObject*
+ves_icall_System_Threading_Interlocked_CompareExchange_T (MonoObject **location, MonoObject *value, MonoObject *comparand)
+{
+ MONO_ARCH_SAVE_REGS;
+
+ return InterlockedCompareExchangePointer ((gpointer *)location, value, comparand);
+}
+
+MonoObject*
+ves_icall_System_Threading_Interlocked_Exchange_T (MonoObject **location, MonoObject *value)
+{
+ MONO_ARCH_SAVE_REGS;
+
+ return InterlockedExchangePointer ((gpointer *)location, value);
+}
+
+gint32
+ves_icall_System_Threading_Interlocked_Add_Int (gint32 *location, gint32 value)
+{
+#if SIZEOF_VOID_P == 8
+ /* Should be implemented as a JIT intrinsic */
+ mono_raise_exception (mono_get_exception_not_implemented (NULL));
+ return 0;
+#else
+ gint32 orig;
+
+ mono_interlocked_lock ();
+ orig = *location;
+ *location = orig + value;
+ mono_interlocked_unlock ();
+
+ return orig + value;
+#endif
+}
+
+gint64
+ves_icall_System_Threading_Interlocked_Add_Long (gint64 *location, gint64 value)
+{
+#if SIZEOF_VOID_P == 8
+ /* Should be implemented as a JIT intrinsic */
+ mono_raise_exception (mono_get_exception_not_implemented (NULL));
+ return 0;
+#else
+ gint64 orig;
+
+ mono_interlocked_lock ();
+ orig = *location;
+ *location = orig + value;
+ mono_interlocked_unlock ();
+
+ return orig + value;
+#endif
+}
+
+gint64
+ves_icall_System_Threading_Interlocked_Read_Long (gint64 *location)
+{
+#if SIZEOF_VOID_P == 8
+ /* 64 bit reads are already atomic */
+ return *location;
+#else
+ gint64 res;
+
+ mono_interlocked_lock ();
+ res = *location;
+ mono_interlocked_unlock ();
+
+ return res;
+#endif
+}
+
+void
+ves_icall_System_Threading_Thread_MemoryBarrier (void)
+{
+ /* Should be implemented as a JIT intrinsic */
+ mono_raise_exception (mono_get_exception_not_implemented (NULL));
+}
+
+void
+ves_icall_System_Threading_Thread_ClrState (MonoThread* this, guint32 state)
+{
+ mono_monitor_enter (this->synch_lock);
+ this->state &= ~state;
+ if (state & ThreadState_Background) {
+ /* If the thread changes the background mode, the main thread has to
+ * be notified, since it has to rebuild the list of threads to
+ * wait for.
+ */
+ SetEvent (background_change_event);
+ }
+ mono_monitor_exit (this->synch_lock);
+}
+
+void
+ves_icall_System_Threading_Thread_SetState (MonoThread* this, guint32 state)
+{
+ mono_monitor_enter (this->synch_lock);
+ this->state |= state;
+ if (state & ThreadState_Background) {
+ /* If the thread changes the background mode, the main thread has to
+ * be notified, since it has to rebuild the list of threads to
+ * wait for.
+ */
+ SetEvent (background_change_event);
+ }
+ mono_monitor_exit (this->synch_lock);
+}
+
+guint32
+ves_icall_System_Threading_Thread_GetState (MonoThread* this)
+{
+ guint32 state;
+ mono_monitor_enter (this->synch_lock);
+ state = this->state;
+ mono_monitor_exit (this->synch_lock);
+ return state;
+}
+
+void ves_icall_System_Threading_Thread_Interrupt_internal (MonoThread *this)
+{
+ gboolean throw = FALSE;
+
+ mono_monitor_enter (this->synch_lock);
+
+ /* Clear out any previous request */
+ this->thread_interrupt_requested = FALSE;
+
+ if (this->state & ThreadState_WaitSleepJoin) {
+ throw = TRUE;
+ } else {
+ this->thread_interrupt_requested = TRUE;
+ }
+
+ mono_monitor_exit (this->synch_lock);
+
+ if (throw) {
+ signal_thread_state_change (this);
+ }
+}
+
+void mono_thread_current_check_pending_interrupt ()
+{
+ MonoThread *thread = mono_thread_current ();
+ gboolean throw = FALSE;
+
+ mono_monitor_enter (thread->synch_lock);
+
+ if (thread->thread_interrupt_requested) {
+ throw = TRUE;
+ thread->thread_interrupt_requested = FALSE;
+ }
+
+ mono_monitor_exit (thread->synch_lock);
+
+ if (throw) {
+ mono_raise_exception (mono_get_exception_thread_interrupted ());
+ }
+}
+
+int
+mono_thread_get_abort_signal (void)
+{
+#if defined (__MINGW32__) || defined (_MSC_VER)
+ return -1;
+#else
+#ifndef SIGRTMIN
+ return SIGUSR1;
+#else
+ static int abort_signum = -1;
+ int i;
+ if (abort_signum != -1)
+ return abort_signum;
+ /* we try to avoid SIGRTMIN and any one that might have been set already, see bug #75387 */
+ for (i = SIGRTMIN + 1; i < SIGRTMAX; ++i) {
+ struct sigaction sinfo;
+ sigaction (i, NULL, &sinfo);
+ if (sinfo.sa_handler == SIG_DFL && (void*)sinfo.sa_sigaction == (void*)SIG_DFL) {
+ abort_signum = i;
+ return i;
+ }
+ }
+ /* fallback to the old way */
+ return SIGRTMIN;
+#endif
+#endif /*defined (__MINGW32__) || defined (_MSC_VER) */
+}
+
+#if defined (__MINGW32__) || defined (_MSC_VER)
+static void CALLBACK interruption_request_apc (ULONG_PTR param)
+{
+ MonoException* exc = mono_thread_request_interruption (FALSE);
+ if (exc) mono_raise_exception (exc);
+}
+#endif /* defined (__MINGW32__) || defined (_MSC_VER) */
+
+/*
+ * signal_thread_state_change
+ *
+ * Tells the thread that his state has changed and it has to enter the new
+ * state as soon as possible.
+ */
+static void signal_thread_state_change (MonoThread *thread)
+{
+ if (thread == mono_thread_current ()) {
+ /* Do it synchronously */
+ MonoException *exc = mono_thread_request_interruption (FALSE);
+ if (exc)
+ mono_raise_exception (exc);
+ }
+
+#if defined (__MINGW32__) || defined (_MSC_VER)
+ QueueUserAPC ((PAPCFUNC)interruption_request_apc, thread->handle, NULL);
+#else
+ /* fixme: store the state somewhere */
+#ifdef PTHREAD_POINTER_ID
+ pthread_kill ((gpointer)(gsize)(thread->tid), mono_thread_get_abort_signal ());
+#else
+ pthread_kill (thread->tid, mono_thread_get_abort_signal ());
+#endif
+#endif /* defined (__MINGW32__) || defined (__MSC_VER) */
+}
+
+void
+ves_icall_System_Threading_Thread_Abort (MonoThread *thread, MonoObject *state)
+{
+ MONO_ARCH_SAVE_REGS;
+
+ mono_monitor_enter (thread->synch_lock);
+
+ if ((thread->state & ThreadState_AbortRequested) != 0 ||
+ (thread->state & ThreadState_StopRequested) != 0 ||
+ (thread->state & ThreadState_Stopped) != 0)
+ {
+ mono_monitor_exit (thread->synch_lock);
+ return;
+ }
+
+ if ((thread->state & ThreadState_Unstarted) != 0) {
+ thread->state |= ThreadState_Aborted;
+ mono_monitor_exit (thread->synch_lock);
+ return;
+ }
+
+ thread->state |= ThreadState_AbortRequested;
+ MONO_OBJECT_SETREF (thread, abort_state, state);
+ thread->abort_exc = NULL;
+
+ mono_monitor_exit (thread->synch_lock);
+
+ THREAD_DEBUG (g_message ("%s: (%"G_GSIZE_FORMAT") Abort requested for %p (%"G_GSIZE_FORMAT")", __func__, GetCurrentThreadId (), thread, (gsize)thread->tid));
+
+ /* Make sure the thread is awake */
+ mono_thread_resume (thread);
+
+ signal_thread_state_change (thread);
+}
+
+void
+ves_icall_System_Threading_Thread_ResetAbort (void)
+{
+ MonoThread *thread = mono_thread_current ();
+
+ MONO_ARCH_SAVE_REGS;
+
+ mono_monitor_enter (thread->synch_lock);
+
+ thread->state &= ~ThreadState_AbortRequested;
+
+ if (!thread->abort_exc) {
+ const char *msg = "Unable to reset abort because no abort was requested";
+ mono_monitor_exit (thread->synch_lock);
+ mono_raise_exception (mono_get_exception_thread_state (msg));
+ } else {
+ thread->abort_exc = NULL;
+ thread->abort_state = NULL;
+ }
+
+ mono_monitor_exit (thread->synch_lock);
+}
+
+static gboolean
+mono_thread_suspend (MonoThread *thread)
+{
+ MONO_ARCH_SAVE_REGS;
+
+ mono_monitor_enter (thread->synch_lock);
+
+ if ((thread->state & ThreadState_Unstarted) != 0 ||
+ (thread->state & ThreadState_Aborted) != 0 ||
+ (thread->state & ThreadState_Stopped) != 0)
+ {
+ mono_monitor_exit (thread->synch_lock);
+ return FALSE;
+ }
+
+ if ((thread->state & ThreadState_Suspended) != 0 ||
+ (thread->state & ThreadState_SuspendRequested) != 0 ||
+ (thread->state & ThreadState_StopRequested) != 0)
+ {
+ mono_monitor_exit (thread->synch_lock);
+ return TRUE;
+ }
+
+ thread->state |= ThreadState_SuspendRequested;
+ mono_monitor_exit (thread->synch_lock);
+
+ signal_thread_state_change (thread);
+ return TRUE;
+}
+
+void
+ves_icall_System_Threading_Thread_Suspend (MonoThread *thread)
+{
+ if (!mono_thread_suspend (thread))
+ mono_raise_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
+}
+
+static gboolean
+mono_thread_resume (MonoThread *thread)
+{
+ MONO_ARCH_SAVE_REGS;
+
+ mono_monitor_enter (thread->synch_lock);
+
+ if ((thread->state & ThreadState_SuspendRequested) != 0) {
+ thread->state &= ~ThreadState_SuspendRequested;
+ mono_monitor_exit (thread->synch_lock);
+ return TRUE;
+ }
+
+ if ((thread->state & ThreadState_Suspended) == 0 ||
+ (thread->state & ThreadState_Unstarted) != 0 ||
+ (thread->state & ThreadState_Aborted) != 0 ||
+ (thread->state & ThreadState_Stopped) != 0)
+ {
+ mono_monitor_exit (thread->synch_lock);
+ return FALSE;
+ }
+
+ thread->resume_event = CreateEvent (NULL, TRUE, FALSE, NULL);
+ if (thread->resume_event == NULL) {
+ mono_monitor_exit (thread->synch_lock);
+ return(FALSE);
+ }
+
+ /* Awake the thread */
+ SetEvent (thread->suspend_event);
+
+ mono_monitor_exit (thread->synch_lock);
+
+ /* Wait for the thread to awake */
+ WaitForSingleObject (thread->resume_event, INFINITE);
+ CloseHandle (thread->resume_event);
+ thread->resume_event = NULL;
+
+ return TRUE;
+}
+
+void
+ves_icall_System_Threading_Thread_Resume (MonoThread *thread)
+{
+ if (!mono_thread_resume (thread))
+ mono_raise_exception (mono_get_exception_thread_state ("Thread has not been started, or is dead."));
+}
+
+static gboolean
+find_wrapper (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
+{
+ if (managed)
+ return TRUE;
+
+ if (m->wrapper_type == MONO_WRAPPER_RUNTIME_INVOKE ||
+ m->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE ||
+ m->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH)
+ {
+ *((gboolean*)data) = TRUE;
+ return TRUE;
+ }
+ return FALSE;
+}
+
+static gboolean
+is_running_protected_wrapper (void)
+{
+ gboolean found = FALSE;
+ mono_stack_walk (find_wrapper, &found);
+ return found;
+}
+
+void mono_thread_stop (MonoThread *thread)
+{
+ mono_monitor_enter (thread->synch_lock);
+
+ if ((thread->state & ThreadState_StopRequested) != 0 ||
+ (thread->state & ThreadState_Stopped) != 0)
+ {
+ mono_monitor_exit (thread->synch_lock);
+ return;
+ }
+
+ /* Make sure the thread is awake */
+ mono_thread_resume (thread);
+
+ thread->state |= ThreadState_StopRequested;
+ thread->state &= ~ThreadState_AbortRequested;
+
+ mono_monitor_exit (thread->synch_lock);
+
+ signal_thread_state_change (thread);
+}
+
+gint8
+ves_icall_System_Threading_Thread_VolatileRead1 (void *ptr)
+{
+ return *((volatile gint8 *) (ptr));
+}
+
+gint16
+ves_icall_System_Threading_Thread_VolatileRead2 (void *ptr)
+{
+ return *((volatile gint16 *) (ptr));
+}
+
+gint32
+ves_icall_System_Threading_Thread_VolatileRead4 (void *ptr)
+{
+ return *((volatile gint32 *) (ptr));
+}
+
+gint64
+ves_icall_System_Threading_Thread_VolatileRead8 (void *ptr)
+{
+ return *((volatile gint64 *) (ptr));
+}
+
+void *
+ves_icall_System_Threading_Thread_VolatileReadIntPtr (void *ptr)
+{
+ return (void *) *((volatile void **) ptr);
+}
+
+void
+ves_icall_System_Threading_Thread_VolatileWrite1 (void *ptr, gint8 value)
+{
+ *((volatile gint8 *) ptr) = value;
+}
+
+void
+ves_icall_System_Threading_Thread_VolatileWrite2 (void *ptr, gint16 value)
+{
+ *((volatile gint16 *) ptr) = value;
+}
+
+void
+ves_icall_System_Threading_Thread_VolatileWrite4 (void *ptr, gint32 value)
+{
+ *((volatile gint32 *) ptr) = value;
+}
+
+void
+ves_icall_System_Threading_Thread_VolatileWrite8 (void *ptr, gint64 value)
+{
+ *((volatile gint64 *) ptr) = value;
+}
+
+void
+ves_icall_System_Threading_Thread_VolatileWriteIntPtr (void *ptr, void *value)
+{
+ *((volatile void **) ptr) = value;
+}
+
+void mono_thread_init (MonoThreadStartCB start_cb,
+ MonoThreadAttachCB attach_cb)
+{
+ InitializeCriticalSection(&threads_mutex);
+ InitializeCriticalSection(&interlocked_mutex);
+ InitializeCriticalSection(&contexts_mutex);
+ background_change_event = CreateEvent (NULL, TRUE, FALSE, NULL);
+ g_assert(background_change_event != NULL);
+
+ mono_init_static_data_info (&thread_static_info);
+ mono_init_static_data_info (&context_static_info);
+
+ current_object_key=TlsAlloc();
+ THREAD_DEBUG (g_message ("%s: Allocated current_object_key %d", __func__, current_object_key));
+
+ mono_thread_start_cb = start_cb;
+ mono_thread_attach_cb = attach_cb;
+
+ /* Get a pseudo handle to the current process. This is just a
+ * kludge so that wapi can build a process handle if needed.
+ * As a pseudo handle is returned, we don't need to clean
+ * anything up.
+ */
+ GetCurrentProcess ();
+}
+
+void mono_thread_cleanup (void)
+{
+#if !defined(PLATFORM_WIN32) && !defined(RUN_IN_SUBTHREAD)
+ /* The main thread must abandon any held mutexes (particularly
+ * important for named mutexes as they are shared across
+ * processes, see bug 74680.) This will happen when the
+ * thread exits, but if it's not running in a subthread it
+ * won't exit in time.
+ */
+ /* Using non-w32 API is a nasty kludge, but I couldn't find
+ * anything in the documentation that would let me do this
+ * here yet still be safe to call on windows.
+ */
+ _wapi_thread_signal_self (mono_environment_exitcode_get ());
+#endif
+
+#if 0
+ /* This stuff needs more testing, it seems one of these
+ * critical sections can be locked when mono_thread_cleanup is
+ * called.
+ */
+ DeleteCriticalSection (&threads_mutex);
+ DeleteCriticalSection (&interlocked_mutex);
+ DeleteCriticalSection (&contexts_mutex);
+ CloseHandle (background_change_event);
+#endif
+
+ TlsFree (current_object_key);
+}
+
+void
+mono_threads_install_cleanup (MonoThreadCleanupFunc func)
+{
+ mono_thread_cleanup_fn = func;
+}
+
+G_GNUC_UNUSED
+static void print_tids (gpointer key, gpointer value, gpointer user)
+{
+ /* GPOINTER_TO_UINT breaks horribly if sizeof(void *) >
+ * sizeof(uint) and a cast to uint would overflow
+ */
+ /* Older versions of glib don't have G_GSIZE_FORMAT, so just
+ * print this as a pointer.
+ */
+ g_message ("Waiting for: %p", key);
+}
+
+struct wait_data
+{
+ HANDLE handles[MAXIMUM_WAIT_OBJECTS];
+ MonoThread *threads[MAXIMUM_WAIT_OBJECTS];
+ guint32 num;
+};
+
+static void wait_for_tids (struct wait_data *wait, guint32 timeout)
+{
+ guint32 i, ret;
+
+ THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
+
+ ret=WaitForMultipleObjectsEx(wait->num, wait->handles, TRUE, timeout, FALSE);
+
+ if(ret==WAIT_FAILED) {
+ /* See the comment in build_wait_tids() */
+ THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
+ return;
+ }
+
+ for(i=0; i<wait->num; i++)
+ CloseHandle (wait->handles[i]);
+
+ if (ret == WAIT_TIMEOUT)
+ return;
+
+ for(i=0; i<wait->num; i++) {
+ gsize tid = wait->threads[i]->tid;
+
+ if(mono_g_hash_table_lookup (threads, (gpointer)tid)!=NULL) {
+ /* This thread must have been killed, because
+ * it hasn't cleaned itself up. (It's just
+ * possible that the thread exited before the
+ * parent thread had a chance to store the
+ * handle, and now there is another pointer to
+ * the already-exited thread stored. In this
+ * case, we'll just get two
+ * mono_profiler_thread_end() calls for the
+ * same thread.)
+ */
+
+ THREAD_DEBUG (g_message ("%s: cleaning up after thread %"G_GSIZE_FORMAT, __func__, tid));
+ thread_cleanup (wait->threads[i]);
+ }
+ }
+}
+
+static void wait_for_tids_or_state_change (struct wait_data *wait, guint32 timeout)
+{
+ guint32 i, ret, count;
+
+ THREAD_DEBUG (g_message("%s: %d threads to wait for in this batch", __func__, wait->num));
+
+ /* Add the thread state change event, so it wakes up if a thread changes
+ * to background mode.
+ */
+ count = wait->num;
+ if (count < MAXIMUM_WAIT_OBJECTS) {
+ wait->handles [count] = background_change_event;
+ count++;
+ }
+
+ ret=WaitForMultipleObjectsEx (count, wait->handles, FALSE, timeout, FALSE);
+
+ if(ret==WAIT_FAILED) {
+ /* See the comment in build_wait_tids() */
+ THREAD_DEBUG (g_message ("%s: Wait failed", __func__));
+ return;
+ }
+
+ for(i=0; i<wait->num; i++)
+ CloseHandle (wait->handles[i]);
+
+ if (ret == WAIT_TIMEOUT)
+ return;
+
+ if (ret < wait->num) {
+ gsize tid = wait->threads[ret]->tid;
+ mono_threads_lock ();
+ if (mono_g_hash_table_lookup (threads, (gpointer)tid)!=NULL) {
+ /* See comment in wait_for_tids about thread cleanup */
+ mono_threads_unlock ();
+ THREAD_DEBUG (g_message ("%s: cleaning up after thread %"G_GSIZE_FORMAT, __func__, tid));
+ thread_cleanup (wait->threads [ret]);
+ } else
+ mono_threads_unlock ();
+ }
+}
+
+static void build_wait_tids (gpointer key, gpointer value, gpointer user)
+{
+ struct wait_data *wait=(struct wait_data *)user;
+
+ if(wait->num<MAXIMUM_WAIT_OBJECTS) {
+ HANDLE handle;
+ MonoThread *thread=(MonoThread *)value;
+
+ /* Ignore background threads, we abort them later */
+ mono_monitor_enter (thread->synch_lock);
+ if (thread->state & ThreadState_Background) {
+ THREAD_DEBUG (g_message ("%s: ignoring background thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
+ mono_monitor_exit (thread->synch_lock);
+ return; /* just leave, ignore */
+ }
+ mono_monitor_exit (thread->synch_lock);
+
+ if (mono_gc_is_finalizer_thread (thread)) {
+ THREAD_DEBUG (g_message ("%s: ignoring finalizer thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
+ return;
+ }
+
+ if (thread == mono_thread_current ()) {
+ THREAD_DEBUG (g_message ("%s: ignoring current thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
+ return;
+ }
+
+ if (thread == mono_thread_get_main ()) {
+ THREAD_DEBUG (g_message ("%s: ignoring main thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
+ return;
+ }
+
+ handle = OpenThread (THREAD_ALL_ACCESS, TRUE, thread->tid);
+ if (handle == NULL) {
+ THREAD_DEBUG (g_message ("%s: ignoring unopenable thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
+ return;
+ }
+
+ wait->handles[wait->num]=handle;
+ wait->threads[wait->num]=thread;
+ wait->num++;
+
+ THREAD_DEBUG (g_message ("%s: adding thread %"G_GSIZE_FORMAT, __func__, (gsize)thread->tid));
+ } else {
+ /* Just ignore the rest, we can't do anything with
+ * them yet
+ */
+ }
+}
+
+static gboolean
+remove_and_abort_threads (gpointer key, gpointer value, gpointer user)
+{
+ struct wait_data *wait=(struct wait_data *)user;
+ gsize self = GetCurrentThreadId ();
+ MonoThread *thread = (MonoThread *) value;
+ HANDLE handle;
+
+ if (wait->num >= MAXIMUM_WAIT_OBJECTS)
+ return FALSE;
+
+ /* The finalizer thread is not a background thread */
+ if (thread->tid != self && (thread->state & ThreadState_Background) != 0) {
+
+ handle = OpenThread (THREAD_ALL_ACCESS, TRUE, thread->tid);
+ if (handle == NULL)
+ return FALSE;
+
+ if(thread->state & ThreadState_AbortRequested ||
+ thread->state & ThreadState_Aborted) {
+ THREAD_DEBUG (g_message ("%s: Thread id %"G_GSIZE_FORMAT" already aborting", __func__, (gsize)thread->tid));
+ return(TRUE);
+ }
+
+ /* printf ("A: %d\n", wait->num); */
+ wait->handles[wait->num]=thread->handle;
+ wait->threads[wait->num]=thread;
+ wait->num++;
+
+ THREAD_DEBUG (g_print ("%s: Aborting id: %"G_GSIZE_FORMAT"\n", __func__, (gsize)thread->tid));
+ mono_thread_stop (thread);
+ return TRUE;
+ }
+
+ return (thread->tid != self && !mono_gc_is_finalizer_thread (thread));
+}
+
+void mono_thread_manage (void)
+{
+ struct wait_data *wait=g_new0 (struct wait_data, 1);
+
+ /* join each thread that's still running */
+ THREAD_DEBUG (g_message ("%s: Joining each running thread...", __func__));
+
+ mono_threads_lock ();
+ if(threads==NULL) {
+ THREAD_DEBUG (g_message("%s: No threads", __func__));
+ mono_threads_unlock ();
+ return;
+ }
+ mono_threads_unlock ();
+
+ do {
+ mono_threads_lock ();
+ THREAD_DEBUG (g_message ("%s: There are %d threads to join", __func__, mono_g_hash_table_size (threads));
+ mono_g_hash_table_foreach (threads, print_tids, NULL));
+
+ ResetEvent (background_change_event);
+ wait->num=0;
+ mono_g_hash_table_foreach (threads, build_wait_tids, wait);
+ mono_threads_unlock ();
+ if(wait->num>0) {
+ /* Something to wait for */
+ wait_for_tids_or_state_change (wait, INFINITE);
+ }
+ THREAD_DEBUG (g_message ("%s: I have %d threads after waiting.", __func__, wait->num));
+ } while(wait->num>0);
+
+ mono_runtime_set_shutting_down ();
+
+ THREAD_DEBUG (g_message ("%s: threadpool cleanup", __func__));
+ mono_thread_pool_cleanup ();
+
+ /*
+ * Remove everything but the finalizer thread and self.
+ * Also abort all the background threads
+ * */
+ do {
+ mono_threads_lock ();
+
+ wait->num = 0;
+ mono_g_hash_table_foreach_remove (threads, remove_and_abort_threads, wait);
+
+ mono_threads_unlock ();
+
+ THREAD_DEBUG (g_message ("%s: wait->num is now %d", __func__, wait->num));
+ if(wait->num>0) {
+ /* Something to wait for */
+ wait_for_tids (wait, INFINITE);
+ }
+ } while (wait->num > 0);
+
+ /*
+ * give the subthreads a chance to really quit (this is mainly needed
+ * to get correct user and system times from getrusage/wait/time(1)).
+ * This could be removed if we avoid pthread_detach() and use pthread_join().
+ */
+#ifndef PLATFORM_WIN32
+ sched_yield ();
+#endif
+
+ g_free (wait);
+}
+
+static void terminate_thread (gpointer key, gpointer value, gpointer user)
+{
+ MonoThread *thread=(MonoThread *)value;
+
+ if(thread->tid != (gsize)user) {
+ /*TerminateThread (thread->handle, -1);*/
+ }
+}
+
+void mono_thread_abort_all_other_threads (void)
+{
+ gsize self = GetCurrentThreadId ();
+
+ mono_threads_lock ();
+ THREAD_DEBUG (g_message ("%s: There are %d threads to abort", __func__,
+ mono_g_hash_table_size (threads));
+ mono_g_hash_table_foreach (threads, print_tids, NULL));
+
+ mono_g_hash_table_foreach (threads, terminate_thread, (gpointer)self);
+
+ mono_threads_unlock ();
+}
+
+static void
+collect_threads (gpointer key, gpointer value, gpointer user_data)
+{
+ MonoThread *thread = (MonoThread*)value;
+ struct wait_data *wait = (struct wait_data*)user_data;
+ HANDLE handle;
+
+ if (wait->num<MAXIMUM_WAIT_OBJECTS) {
+ handle = OpenThread (THREAD_ALL_ACCESS, TRUE, thread->tid);
+ if (handle == NULL)
+ return;
+
+ wait->handles [wait->num] = handle;
+ wait->threads [wait->num] = thread;
+ wait->num++;
+ }
+}
+
+/*
+ * mono_thread_suspend_all_other_threads:
+ *
+ * Suspend all managed threads except the finalizer thread and this thread.
+ */
+void mono_thread_suspend_all_other_threads (void)
+{
+ struct wait_data *wait = g_new0 (struct wait_data, 1);
+ int i, waitnum;
+ gsize self = GetCurrentThreadId ();
+ gpointer *events;
+ guint32 eventidx = 0;
+
+ /*
+ * Make a copy of the hashtable since we can't do anything with
+ * threads while threads_mutex is held.
+ */
+ mono_threads_lock ();
+ mono_g_hash_table_foreach (threads, collect_threads, wait);
+ mono_threads_unlock ();
+
+ events = g_new0 (gpointer, wait->num);
+ waitnum = 0;
+ /* Get the suspended events that we'll be waiting for */
+ for (i = 0; i < wait->num; ++i) {
+ MonoThread *thread = wait->threads [i];
+
+ if ((thread->tid == self) || mono_gc_is_finalizer_thread (thread)) {
+ //CloseHandle (wait->handles [i]);
+ wait->threads [i] = NULL; /* ignore this thread in next loop */
+ continue;
+ }
+
+ mono_monitor_enter (thread->synch_lock);
+
+ if ((thread->state & ThreadState_Suspended) != 0 ||
+ (thread->state & ThreadState_SuspendRequested) != 0 ||
+ (thread->state & ThreadState_StopRequested) != 0 ||
+ (thread->state & ThreadState_Stopped) != 0) {
+ mono_monitor_exit (thread->synch_lock);
+ CloseHandle (wait->handles [i]);
+ wait->threads [i] = NULL; /* ignore this thread in next loop */
+ continue;
+ }
+
+ /* Convert abort requests into suspend requests */
+ if ((thread->state & ThreadState_AbortRequested) != 0)
+ thread->state &= ~ThreadState_AbortRequested;
+
+ thread->state |= ThreadState_SuspendRequested;
+
+ if (thread->suspended_event == NULL) {
+ thread->suspended_event = CreateEvent (NULL, TRUE, FALSE, NULL);
+ if (thread->suspended_event == NULL) {
+ /* Forget this one and go on to the next */
+ mono_monitor_exit (thread->synch_lock);
+ continue;
+ }
+ }
+
+ events [eventidx++] = thread->suspended_event;
+ mono_monitor_exit (thread->synch_lock);
+
+ /* Signal the thread to suspend */
+ signal_thread_state_change (thread);
+ }
+
+ WaitForMultipleObjectsEx (eventidx, events, TRUE, INFINITE, FALSE);
+ for (i = 0; i < wait->num; ++i) {
+ MonoThread *thread = wait->threads [i];
+
+ if (thread == NULL)
+ continue;
+
+ mono_monitor_enter (thread->synch_lock);
+ CloseHandle (thread->suspended_event);
+ thread->suspended_event = NULL;
+ mono_monitor_exit (thread->synch_lock);
+ }
+
+ g_free (events);
+ g_free (wait);
+}
+
+/**
+ * mono_threads_request_thread_dump:
+ *
+ * Ask all threads except the current to print their stacktrace to stdout.
+ */
+void
+mono_threads_request_thread_dump (void)
+{
+ struct wait_data *wait = g_new0 (struct wait_data, 1);
+ int i;
+
+ /*
+ * Make a copy of the hashtable since we can't do anything with
+ * threads while threads_mutex is held.
+ */
+ mono_threads_lock ();
+ mono_g_hash_table_foreach (threads, collect_threads, wait);
+ mono_threads_unlock ();
+
+ for (i = 0; i < wait->num; ++i) {
+ MonoThread *thread = wait->threads [i];
+
+ if (!mono_gc_is_finalizer_thread (thread) && (thread != mono_thread_current ()) && !thread->thread_dump_requested) {
+ thread->thread_dump_requested = TRUE;
+
+ signal_thread_state_change (thread);
+ }
+
+ CloseHandle (wait->handles [i]);
+ }
+}
+
+/*
+ * mono_thread_push_appdomain_ref:
+ *
+ * Register that the current thread may have references to objects in domain
+ * @domain on its stack. Each call to this function should be paired with a
+ * call to pop_appdomain_ref.
+ */
+void
+mono_thread_push_appdomain_ref (MonoDomain *domain)
+{
+ MonoThread *thread = mono_thread_current ();
+
+ if (thread) {
+ /* printf ("PUSH REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, domain->friendly_name); */
+ mono_threads_lock ();
+ thread->appdomain_refs = g_slist_prepend (thread->appdomain_refs, domain);
+ mono_threads_unlock ();
+ }
+}
+
+void
+mono_thread_pop_appdomain_ref (void)
+{
+ MonoThread *thread = mono_thread_current ();
+
+ if (thread) {
+ /* printf ("POP REF: %"G_GSIZE_FORMAT" -> %s.\n", (gsize)thread->tid, ((MonoDomain*)(thread->appdomain_refs->data))->friendly_name); */
+ mono_threads_lock ();
+ /* FIXME: How can the list be empty ? */
+ if (thread->appdomain_refs)
+ thread->appdomain_refs = g_slist_remove (thread->appdomain_refs, thread->appdomain_refs->data);
+ mono_threads_unlock ();
+ }
+}
+
+gboolean
+mono_thread_has_appdomain_ref (MonoThread *thread, MonoDomain *domain)
+{
+ gboolean res;
+ mono_threads_lock ();
+ res = g_slist_find (thread->appdomain_refs, domain) != NULL;
+ mono_threads_unlock ();
+ return res;
+}
+
+typedef struct abort_appdomain_data {
+ struct wait_data wait;
+ MonoDomain *domain;
+} abort_appdomain_data;
+
+static void
+abort_appdomain_thread (gpointer key, gpointer value, gpointer user_data)
+{
+ MonoThread *thread = (MonoThread*)value;
+ abort_appdomain_data *data = (abort_appdomain_data*)user_data;
+ MonoDomain *domain = data->domain;
+
+ if (mono_thread_has_appdomain_ref (thread, domain)) {
+ HANDLE handle = OpenThread (THREAD_ALL_ACCESS, TRUE, thread->tid);
+ if (handle == NULL)
+ return;
+
+ /* printf ("ABORTING THREAD %p BECAUSE IT REFERENCES DOMAIN %s.\n", thread->tid, domain->friendly_name); */
+
+ ves_icall_System_Threading_Thread_Abort (thread, NULL);
+
+ if(data->wait.num<MAXIMUM_WAIT_OBJECTS) {
+ data->wait.handles [data->wait.num] = handle;
+ data->wait.threads [data->wait.num] = thread;
+ data->wait.num++;
+ } else {
+ /* Just ignore the rest, we can't do anything with
+ * them yet
+ */
+ }
+ }
+}
+
+/*
+ * mono_threads_abort_appdomain_threads:
+ *
+ * Abort threads which has references to the given appdomain.
+ */
+gboolean
+mono_threads_abort_appdomain_threads (MonoDomain *domain, int timeout)
+{
+ abort_appdomain_data user_data;
+ guint32 start_time;
+
+ /* printf ("ABORT BEGIN.\n"); */
+
+ start_time = GetTickCount ();
+ do {
+ mono_threads_lock ();
+
+ user_data.domain = domain;
+ user_data.wait.num = 0;
+ mono_g_hash_table_foreach (threads, abort_appdomain_thread, &user_data);
+ mono_threads_unlock ();
+
+ if (user_data.wait.num > 0)
+ /*
+ * We should wait for the threads either to abort, or to leave the
+ * domain. We can't do the latter, so we wait with a timeout.
+ */
+ wait_for_tids (&user_data.wait, 100);
+
+ /* Update remaining time */
+ timeout -= GetTickCount () - start_time;
+ start_time = GetTickCount ();
+
+ if (timeout < 0)
+ return FALSE;
+ }
+ while (user_data.wait.num > 0);
+
+ /* printf ("ABORT DONE.\n"); */
+
+ return TRUE;
+}
+
+static void
+clear_cached_culture (gpointer key, gpointer value, gpointer user_data)
+{
+ MonoThread *thread = (MonoThread*)value;
+ MonoDomain *domain = (MonoDomain*)user_data;
+ int i;
+
+ /* No locking needed here */
+ /* FIXME: why no locking? writes to the cache are protected with synch_lock above */
+
+ if (thread->cached_culture_info) {
+ for (i = 0; i < NUM_CACHED_CULTURES * 2; ++i) {
+ MonoObject *obj = mono_array_get (thread->cached_culture_info, MonoObject*, i);
+ if (obj && obj->vtable->domain == domain)
+ mono_array_set (thread->cached_culture_info, MonoObject*, i, NULL);
+ }
+ }
+}
+
+/*
+ * mono_threads_clear_cached_culture:
+ *
+ * Clear the cached_current_culture from all threads if it is in the
+ * given appdomain.
+ */
+void
+mono_threads_clear_cached_culture (MonoDomain *domain)
+{
+ mono_threads_lock ();
+ mono_g_hash_table_foreach (threads, clear_cached_culture, domain);
+ mono_threads_unlock ();
+}
+
+/*
+ * mono_thread_get_pending_exception:
+ *
+ * Return an exception which needs to be raised when leaving a catch clause.
+ * This is used for undeniable exception propagation.
+ */
+MonoException*
+mono_thread_get_pending_exception (void)
+{
+ MonoThread *thread = mono_thread_current ();
+
+ MONO_ARCH_SAVE_REGS;
+
+ if (thread && thread->abort_exc && !is_running_protected_wrapper ()) {
+ /*
+ * FIXME: Clear the abort exception and return an AppDomainUnloaded
+ * exception if the thread no longer references a dying appdomain.
+ */
+ thread->abort_exc->trace_ips = NULL;
+ thread->abort_exc->stack_trace = NULL;
+ return thread->abort_exc;
+ }
+
+ return NULL;
+}
+
+#define NUM_STATIC_DATA_IDX 8
+static const int static_data_size [NUM_STATIC_DATA_IDX] = {
+ 1024, 4096, 16384, 65536, 262144, 1048576, 4194304, 16777216
+};
+
+
+/*
+ * mono_alloc_static_data
+ *
+ * Allocate memory blocks for storing threads or context static data
+ */
+static void
+mono_alloc_static_data (gpointer **static_data_ptr, guint32 offset)
+{
+ guint idx = (offset >> 24) - 1;
+ int i;
+
+ gpointer* static_data = *static_data_ptr;
+ if (!static_data) {
+ static_data = mono_gc_alloc_fixed (static_data_size [0], NULL);
+ *static_data_ptr = static_data;
+ static_data [0] = static_data;
+ }
+
+ for (i = 1; i <= idx; ++i) {
+ if (static_data [i])
+ continue;
+ static_data [i] = mono_gc_alloc_fixed (static_data_size [i], NULL);
+ }
+}
+
+/*
+ * mono_init_static_data_info
+ *
+ * Initializes static data counters
+ */
+static void mono_init_static_data_info (StaticDataInfo *static_data)
+{
+ static_data->idx = 0;
+ static_data->offset = 0;
+}
+
+/*
+ * mono_alloc_static_data_slot
+ *
+ * Generates an offset for static data. static_data contains the counters
+ * used to generate it.
+ */
+static guint32
+mono_alloc_static_data_slot (StaticDataInfo *static_data, guint32 size, guint32 align)
+{
+ guint32 offset;
+
+ if (!static_data->idx && !static_data->offset) {
+ /*
+ * we use the first chunk of the first allocation also as
+ * an array for the rest of the data
+ */
+ static_data->offset = sizeof (gpointer) * NUM_STATIC_DATA_IDX;
+ }
+ static_data->offset += align - 1;
+ static_data->offset &= ~(align - 1);
+ if (static_data->offset + size >= static_data_size [static_data->idx]) {
+ static_data->idx ++;
+ g_assert (size <= static_data_size [static_data->idx]);
+ /*
+ * massive unloading and reloading of domains with thread-static
+ * data may eventually exceed the allocated storage...
+ * Need to check what the MS runtime does in that case.
+ * Note that for each appdomain, we need to allocate a separate
+ * thread data slot for security reasons. We could keep track
+ * of the slots per-domain and when the domain is unloaded
+ * out the slots on a sort of free list.
+ */
+ g_assert (static_data->idx < NUM_STATIC_DATA_IDX);
+ static_data->offset = 0;
+ }
+ offset = static_data->offset | ((static_data->idx + 1) << 24);
+ static_data->offset += size;
+ return offset;
+}
+
+/*
+ * ensure thread static fields already allocated are valid for thread
+ * This function is called when a thread is created or on thread attach.
+ */
+static void
+thread_adjust_static_data (MonoThread *thread)
+{
+ guint32 offset;
+
+ mono_threads_lock ();
+ if (thread_static_info.offset || thread_static_info.idx > 0) {
+ /* get the current allocated size */
+ offset = thread_static_info.offset | ((thread_static_info.idx + 1) << 24);
+ mono_alloc_static_data (&(thread->static_data), offset);
+ }
+ mono_threads_unlock ();
+}
+
+static void
+alloc_thread_static_data_helper (gpointer key, gpointer value, gpointer user)
+{
+ MonoThread *thread = value;
+ guint32 offset = GPOINTER_TO_UINT (user);
+
+ mono_alloc_static_data (&(thread->static_data), offset);
+}
+
+/*
+ * The offset for a special static variable is composed of three parts:
+ * a bit that indicates the type of static data (0:thread, 1:context),
+ * an index in the array of chunks of memory for the thread (thread->static_data)
+ * and an offset in that chunk of mem. This allows allocating less memory in the
+ * common case.
+ */
+
+guint32
+mono_alloc_special_static_data (guint32 static_type, guint32 size, guint32 align)
+{
+ guint32 offset;
+ if (static_type == SPECIAL_STATIC_THREAD)
+ {
+ mono_threads_lock ();
+ offset = mono_alloc_static_data_slot (&thread_static_info, size, align);
+ /* This can be called during startup */
+ if (threads != NULL)
+ mono_g_hash_table_foreach (threads, alloc_thread_static_data_helper, GUINT_TO_POINTER (offset));
+ mono_threads_unlock ();
+ }
+ else
+ {
+ g_assert (static_type == SPECIAL_STATIC_CONTEXT);
+ mono_contexts_lock ();
+ offset = mono_alloc_static_data_slot (&context_static_info, size, align);
+ mono_contexts_unlock ();
+ offset |= 0x80000000; /* Set the high bit to indicate context static data */
+ }
+ return offset;
+}
+
+gpointer
+mono_get_special_static_data (guint32 offset)
+{
+ /* The high bit means either thread (0) or static (1) data. */
+
+ guint32 static_type = (offset & 0x80000000);
+ int idx;
+
+ offset &= 0x7fffffff;
+ idx = (offset >> 24) - 1;
+
+ if (static_type == 0)
+ {
+ MonoThread *thread = mono_thread_current ();
+ return ((char*) thread->static_data [idx]) + (offset & 0xffffff);
+ }
+ else
+ {
+ /* Allocate static data block under demand, since we don't have a list
+ // of contexts
+ */
+ MonoAppContext *context = mono_context_get ();
+ if (!context->static_data || !context->static_data [idx]) {
+ mono_contexts_lock ();
+ mono_alloc_static_data (&(context->static_data), offset);
+ mono_contexts_unlock ();
+ }
+ return ((char*) context->static_data [idx]) + (offset & 0xffffff);
+ }
+}
+
+static MonoClassField *local_slots = NULL;
+
+typedef struct {
+ /* local tls data to get locals_slot from a thread */
+ guint32 offset;
+ int idx;
+ /* index in the locals_slot array */
+ int slot;
+} LocalSlotID;
+
+static void
+clear_local_slot (gpointer key, gpointer value, gpointer user_data)
+{
+ LocalSlotID *sid = user_data;
+ MonoThread *thread = (MonoThread*)value;
+ MonoArray *slots_array;
+ /*
+ * the static field is stored at: ((char*) thread->static_data [idx]) + (offset & 0xffffff);
+ * it is for the right domain, so we need to check if it is allocated an initialized
+ * for the current thread.
+ */
+ /*g_print ("handling thread %p\n", thread);*/
+ if (!thread->static_data || !thread->static_data [sid->idx])
+ return;
+ slots_array = *(MonoArray **)(((char*) thread->static_data [sid->idx]) + (sid->offset & 0xffffff));
+ if (!slots_array || sid->slot >= mono_array_length (slots_array))
+ return;
+ mono_array_set (slots_array, MonoObject*, sid->slot, NULL);
+}
+
+void
+mono_thread_free_local_slot_values (int slot, MonoBoolean thread_local)
+{
+ MonoDomain *domain;
+ LocalSlotID sid;
+ sid.slot = slot;
+ if (thread_local) {
+ void *addr = NULL;
+ if (!local_slots) {
+ local_slots = mono_class_get_field_from_name (mono_defaults.thread_class, "local_slots");
+ if (!local_slots) {
+ g_warning ("local_slots field not found in Thread class");
+ return;
+ }
+ }
+ domain = mono_domain_get ();
+ mono_domain_lock (domain);
+ if (domain->special_static_fields)
+ addr = g_hash_table_lookup (domain->special_static_fields, local_slots);
+ mono_domain_unlock (domain);
+ if (!addr)
+ return;
+ /*g_print ("freeing slot %d at %p\n", slot, addr);*/
+ sid.offset = GPOINTER_TO_UINT (addr);
+ sid.offset &= 0x7fffffff;
+ sid.idx = (sid.offset >> 24) - 1;
+ mono_threads_lock ();
+ mono_g_hash_table_foreach (threads, clear_local_slot, &sid);
+ mono_threads_unlock ();
+ } else {
+ /* FIXME: clear the slot for MonoAppContexts, too */
+ }
+}
+
+#ifdef __MINGW32__
+static CALLBACK void dummy_apc (ULONG_PTR param)
+{
+}
+#else
+static guint32 dummy_apc (gpointer param)
+{
+ return 0;
+}
+#endif
+
+/*
+ * mono_thread_execute_interruption
+ *
+ * Performs the operation that the requested thread state requires (abort,
+ * suspend or stop)
+ */
+static MonoException* mono_thread_execute_interruption (MonoThread *thread)
+{
+ mono_monitor_enter (thread->synch_lock);
+
+ if (thread->interruption_requested) {
+ /* this will consume pending APC calls */
+ WaitForSingleObjectEx (GetCurrentThread(), 0, TRUE);
+ InterlockedDecrement (&thread_interruption_requested);
+ thread->interruption_requested = FALSE;
+ }
+
+ if ((thread->state & ThreadState_AbortRequested) != 0) {
+ if (thread->abort_exc == NULL)
+ MONO_OBJECT_SETREF (thread, abort_exc, mono_get_exception_thread_abort ());
+ mono_monitor_exit (thread->synch_lock);
+ return thread->abort_exc;
+ }
+ else if ((thread->state & ThreadState_SuspendRequested) != 0) {
+ thread->state &= ~ThreadState_SuspendRequested;
+ thread->state |= ThreadState_Suspended;
+ thread->suspend_event = CreateEvent (NULL, TRUE, FALSE, NULL);
+ if (thread->suspend_event == NULL) {
+ mono_monitor_exit (thread->synch_lock);
+ return(NULL);
+ }
+ if (thread->suspended_event)
+ SetEvent (thread->suspended_event);
+ mono_monitor_exit (thread->synch_lock);
+
+ WaitForSingleObject (thread->suspend_event, INFINITE);
+
+ mono_monitor_enter (thread->synch_lock);
+ CloseHandle (thread->suspend_event);
+ thread->suspend_event = NULL;
+ thread->state &= ~ThreadState_Suspended;
+
+ /* The thread that requested the resume will have replaced this event
+ * and will be waiting for it
+ */
+ SetEvent (thread->resume_event);
+ mono_monitor_exit (thread->synch_lock);
+ return NULL;
+ }
+ else if ((thread->state & ThreadState_StopRequested) != 0) {
+ /* FIXME: do this through the JIT? */
+ mono_monitor_exit (thread->synch_lock);
+ mono_thread_exit ();
+ return NULL;
+ } else if (thread->thread_interrupt_requested) {
+ mono_monitor_exit (thread->synch_lock);
+ return(mono_get_exception_thread_interrupted ());
+ }
+
+ mono_monitor_exit (thread->synch_lock);
+ return NULL;
+}
+
+/*
+ * mono_thread_request_interruption
+ *
+ * A signal handler can call this method to request the interruption of a
+ * thread. The result of the interruption will depend on the current state of
+ * the thread. If the result is an exception that needs to be throw, it is
+ * provided as return value.
+ */
+MonoException* mono_thread_request_interruption (gboolean running_managed)
+{
+ MonoThread *thread = mono_thread_current ();
+
+ /* The thread may already be stopping */
+ if (thread == NULL)
+ return NULL;
+
+ mono_monitor_enter (thread->synch_lock);
+
+ if (thread->interruption_requested) {
+ mono_monitor_exit (thread->synch_lock);
+ return NULL;
+ }
+
+ if (!running_managed || is_running_protected_wrapper ()) {
+ /* Can't stop while in unmanaged code. Increase the global interruption
+ request count. When exiting the unmanaged method the count will be
+ checked and the thread will be interrupted. */
+
+ InterlockedIncrement (&thread_interruption_requested);
+ thread->interruption_requested = TRUE;
+ mono_monitor_exit (thread->synch_lock);
+
+ /* this will awake the thread if it is in WaitForSingleObject
+ or similar */
+ QueueUserAPC ((PAPCFUNC)dummy_apc, thread->handle, NULL);
+ return NULL;
+ }
+ else {
+ mono_monitor_exit (thread->synch_lock);
+ return mono_thread_execute_interruption (thread);
+ }
+}
+
+gboolean mono_thread_interruption_requested ()
+{
+ if (thread_interruption_requested) {
+ MonoThread *thread = mono_thread_current ();
+ /* The thread may already be stopping */
+ if (thread != NULL)
+ return (thread->interruption_requested);
+ }
+ return FALSE;
+}
+
+static void mono_thread_interruption_checkpoint_request (gboolean bypass_abort_protection)
+{
+ MonoThread *thread = mono_thread_current ();
+
+ /* The thread may already be stopping */
+ if (thread == NULL)
+ return;
+
+ if (thread->interruption_requested && (bypass_abort_protection || !is_running_protected_wrapper ())) {
+ MonoException* exc = mono_thread_execute_interruption (thread);
+ if (exc) mono_raise_exception (exc);
+ }
+}
+
+/*
+ * Performs the interruption of the current thread, if one has been requested,
+ * and the thread is not running a protected wrapper.
+ */
+void mono_thread_interruption_checkpoint ()
+{
+ mono_thread_interruption_checkpoint_request (FALSE);
+}
+
+/*
+ * Performs the interruption of the current thread, if one has been requested.
+ */
+void mono_thread_force_interruption_checkpoint ()
+{
+ mono_thread_interruption_checkpoint_request (TRUE);
+}
+
+/**
+ * mono_thread_interruption_request_flag:
+ *
+ * Returns the address of a flag that will be non-zero if an interruption has
+ * been requested for a thread. The thread to interrupt may not be the current
+ * thread, so an additional call to mono_thread_interruption_requested() or
+ * mono_thread_interruption_checkpoint() is allways needed if the flag is not
+ * zero.
+ */
+gint32* mono_thread_interruption_request_flag ()
+{
+ return &thread_interruption_requested;
}
projects / mono.git / blobdiff