void
mono_w32mutex_abandon (MonoInternalThread *internal_raw)
{
HANDLE_FUNCTION_ENTER ()
MONO_HANDLE_DCL (MonoInternalThread, internal);
g_assert (mono_thread_internal_is_current_handle (internal));
if (!MONO_HANDLE_GETVAL (internal, owned_mutexes))
goto exit;
while (MONO_HANDLE_GETVAL (internal, owned_mutexes)->len) {
MonoW32Handle *handle_data;
MonoW32HandleMutex *mutex_handle;
MonoNativeThreadId tid;
gpointer handle;
handle = g_ptr_array_index (MONO_HANDLE_GETVAL (internal, owned_mutexes), 0);
if (!mono_w32handle_lookup_and_ref (handle, &handle_data))
g_error ("%s: unkown handle %p", __func__, handle);
if (handle_data->type != MONO_W32TYPE_MUTEX && handle_data->type != MONO_W32TYPE_NAMEDMUTEX)
g_error ("%s: unkown mutex handle %p", __func__, handle);
mutex_handle = (MonoW32HandleMutex*) handle_data->specific;
mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER_MUTEX, "%s: abandoning %s handle %p",
__func__, mono_w32handle_get_typename (handle_data->type), handle);
tid = MONO_UINT_TO_NATIVE_THREAD_ID (MONO_HANDLE_GETVAL (internal, tid));
if (!pthread_equal (mutex_handle->tid, tid))
g_error ("%s: trying to release mutex %p acquired by thread %p from thread %p",
__func__, handle, (gpointer) mutex_handle->tid, (gpointer) tid);
mono_w32handle_lock (handle_data);
mutex_handle->recursion = 0;
mutex_handle->tid = 0;
mutex_handle->abandoned = TRUE;
mono_w32handle_set_signal_state (handle_data, TRUE, FALSE);
thread_disown_mutex (internal, handle);
mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER_MUTEX, "%s: abandoned %s handle %p",
__func__, mono_w32handle_get_typename (handle_data->type), handle);
mono_w32handle_unlock (handle_data);
mono_w32handle_unref (handle_data);
}
g_ptr_array_free (MONO_HANDLE_GETVAL (internal, owned_mutexes), TRUE);
MONO_HANDLE_SETVAL(internal, owned_mutexes, GPtrArray*, NULL);
exit:
HANDLE_FUNCTION_RETURN ();
}
MonoBoolean
ves_icall_System_Threading_Mutex_ReleaseMutex_internal (gpointer handle)
{
MonoW32Handle *handle_data;
MonoW32HandleMutex *mutex_handle;
pthread_t tid;
gboolean ret;
if (!mono_w32handle_lookup_and_ref (handle, &handle_data)) {
g_warning ("%s: unkown handle %p", __func__, handle);
mono_w32error_set_last (ERROR_INVALID_HANDLE);
return FALSE;
}
if (handle_data->type != MONO_W32TYPE_MUTEX && handle_data->type != MONO_W32TYPE_NAMEDMUTEX) {
g_warning ("%s: unknown mutex handle %p", __func__, handle);
mono_w32error_set_last (ERROR_INVALID_HANDLE);
mono_w32handle_unref (handle_data);
return FALSE;
}
mutex_handle = (MonoW32HandleMutex*) handle_data->specific;
mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER_MUTEX, "%s: releasing %s handle %p, tid: %p recursion: %d",
__func__, mono_w32handle_get_typename (handle_data->type), handle, (gpointer) mutex_handle->tid, mutex_handle->recursion);
mono_w32handle_lock (handle_data);
tid = pthread_self ();
if (mutex_handle->abandoned) {
// The Win32 ReleaseMutex() function returns TRUE for abandoned mutexes
ret = TRUE;
} else if (!pthread_equal (mutex_handle->tid, tid)) {
ret = FALSE;
mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER_MUTEX, "%s: we don't own %s handle %p (owned by %ld, me %ld)",
__func__, mono_w32handle_get_typename (handle_data->type), handle, (long)mutex_handle->tid, (long)tid);
} else {
ret = TRUE;
/* OK, we own this mutex */
mutex_handle->recursion--;
if (mutex_handle->recursion == 0) {
thread_disown_mutex (mono_thread_internal_current_handle (), handle);
mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER_MUTEX, "%s: unlocking %s handle %p, tid: %p recusion : %d",
__func__, mono_w32handle_get_typename (handle_data->type), handle, (gpointer) mutex_handle->tid, mutex_handle->recursion);
mutex_handle->tid = 0;
mono_w32handle_set_signal_state (handle_data, TRUE, FALSE);
}
}
mono_w32handle_unlock (handle_data);
mono_w32handle_unref (handle_data);
return ret;
}
void
mono_w32mutex_abandon (MonoInternalThread *internal)
{
g_assert (mono_thread_internal_is_current (internal));
if (!internal->owned_mutexes)
return;
while (internal->owned_mutexes->len) {
MonoW32Handle *handle_data;
MonoW32HandleMutex *mutex_handle;
MonoNativeThreadId tid;
gpointer handle;
handle = g_ptr_array_index (internal->owned_mutexes, 0);
if (!mono_w32handle_lookup_and_ref (handle, &handle_data))
g_error ("%s: unkown handle %p", __func__, handle);
if (handle_data->type != MONO_W32TYPE_MUTEX && handle_data->type != MONO_W32TYPE_NAMEDMUTEX)
g_error ("%s: unkown mutex handle %p", __func__, handle);
mutex_handle = (MonoW32HandleMutex*) handle_data->specific;
mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER_MUTEX, "%s: abandoning %s handle %p",
__func__, mono_w32handle_get_typename (handle_data->type), handle);
tid = MONO_UINT_TO_NATIVE_THREAD_ID (internal->tid);
if (!pthread_equal (mutex_handle->tid, tid))
g_error ("%s: trying to release mutex %p acquired by thread %p from thread %p",
__func__, handle, (gpointer) mutex_handle->tid, (gpointer) tid);
mono_w32handle_lock (handle_data);
mutex_handle->recursion = 0;
mutex_handle->tid = 0;
mutex_handle->abandoned = TRUE;
mono_w32handle_set_signal_state (handle_data, TRUE, FALSE);
thread_disown_mutex (internal, handle);
mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER_MUTEX, "%s: abandoned %s handle %p",
__func__, mono_w32handle_get_typename (handle_data->type), handle);
mono_w32handle_unlock (handle_data);
mono_w32handle_unref (handle_data);
}
g_ptr_array_free (internal->owned_mutexes, TRUE);
internal->owned_mutexes = NULL;
}
static gpointer mutex_handle_create (MonoW32HandleMutex *mutex_handle, MonoW32Type type, gboolean owned)
{
MonoW32Handle *handle_data;
gpointer handle;
gboolean abandoned;
mutex_handle->tid = 0;
mutex_handle->recursion = 0;
mutex_handle->abandoned = FALSE;
handle = mono_w32handle_new (type, mutex_handle);
if (handle == INVALID_HANDLE_VALUE) {
g_warning ("%s: error creating %s handle",
__func__, mono_w32handle_get_typename (type));
mono_w32error_set_last (ERROR_GEN_FAILURE);
return NULL;
}
if (!mono_w32handle_lookup_and_ref (handle, &handle_data))
g_error ("%s: unkown handle %p", __func__, handle);
if (handle_data->type != type)
g_error ("%s: unknown mutex handle %p", __func__, handle);
mono_w32handle_lock (handle_data);
if (owned)
mutex_handle_own (handle_data, &abandoned);
else
mono_w32handle_set_signal_state (handle_data, TRUE, FALSE);
mono_w32handle_unlock (handle_data);
/* Balance mono_w32handle_lookup_and_ref */
mono_w32handle_unref (handle_data);
mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER_MUTEX, "%s: created %s handle %p",
__func__, mono_w32handle_get_typename (type), handle);
return handle;
}
static gpointer event_handle_create (MonoW32HandleEvent *event_handle, MonoW32Type type, gboolean manual, gboolean initial)
{
MonoW32Handle *handle_data;
gpointer handle;
event_handle->manual = manual;
event_handle->set_count = (initial && !manual) ? 1 : 0;
handle = mono_w32handle_new (type, event_handle);
if (handle == INVALID_HANDLE_VALUE) {
g_warning ("%s: error creating %s handle",
__func__, mono_w32handle_get_typename (type));
mono_w32error_set_last (ERROR_GEN_FAILURE);
return NULL;
}
if (!mono_w32handle_lookup_and_ref (handle, &handle_data))
g_error ("%s: unkown handle %p", __func__, handle);
if (handle_data->type != type)
g_error ("%s: unknown event handle %p", __func__, handle);
mono_w32handle_lock (handle_data);
if (initial)
mono_w32handle_set_signal_state (handle_data, TRUE, FALSE);
mono_w32handle_unlock (handle_data);
mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER_EVENT, "%s: created %s handle %p",
__func__, mono_w32handle_get_typename (type), handle);
mono_w32handle_unref (handle_data);
return handle;
}
