/*
* actually, we might want to queue the finalize requests in a separate thread,
* but we need to be careful about the execution domain of the thread...
*/
void
mono_gc_run_finalize (void *obj, void *data)
{
MonoObject *exc = NULL;
MonoObject *o;
#ifndef HAVE_SGEN_GC
MonoObject *o2;
#endif
MonoMethod* finalizer = NULL;
MonoDomain *caller_domain = mono_domain_get ();
MonoDomain *domain;
RuntimeInvokeFunction runtime_invoke;
o = (MonoObject*)((char*)obj + GPOINTER_TO_UINT (data));
if (suspend_finalizers)
return;
domain = o->vtable->domain;
#ifndef HAVE_SGEN_GC
mono_domain_finalizers_lock (domain);
o2 = g_hash_table_lookup (domain->finalizable_objects_hash, o);
mono_domain_finalizers_unlock (domain);
if (!o2)
/* Already finalized somehow */
return;
#endif
/* make sure the finalizer is not called again if the object is resurrected */
object_register_finalizer (obj, NULL);
if (o->vtable->klass == mono_defaults.internal_thread_class) {
MonoInternalThread *t = (MonoInternalThread*)o;
if (mono_gc_is_finalizer_internal_thread (t))
/* Avoid finalizing ourselves */
return;
if (t->threadpool_thread && finalizing_root_domain) {
/* Don't finalize threadpool threads when
shutting down - they're finalized when the
threadpool shuts down. */
add_thread_to_finalize (t);
return;
}
}
if (o->vtable->klass->image == mono_defaults.corlib && !strcmp (o->vtable->klass->name, "DynamicMethod") && finalizing_root_domain) {
/*
* These can't be finalized during unloading/shutdown, since that would
* free the native code which can still be referenced by other
* finalizers.
* FIXME: This is not perfect, objects dying at the same time as
* dynamic methods can still reference them even when !shutdown.
*/
return;
}
if (mono_runtime_get_no_exec ())
return;
/* speedup later... and use a timeout */
/* g_print ("Finalize run on %p %s.%s\n", o, mono_object_class (o)->name_space, mono_object_class (o)->name); */
/* Use _internal here, since this thread can enter a doomed appdomain */
mono_domain_set_internal (mono_object_domain (o));
/* delegates that have a native function pointer allocated are
* registered for finalization, but they don't have a Finalize
* method, because in most cases it's not needed and it's just a waste.
*/
if (o->vtable->klass->delegate) {
MonoDelegate* del = (MonoDelegate*)o;
if (del->delegate_trampoline)
mono_delegate_free_ftnptr ((MonoDelegate*)o);
mono_domain_set_internal (caller_domain);
return;
}
finalizer = mono_class_get_finalizer (o->vtable->klass);
#ifndef DISABLE_COM
/* If object has a CCW but has no finalizer, it was only
* registered for finalization in order to free the CCW.
* Else it needs the regular finalizer run.
* FIXME: what to do about ressurection and suppression
* of finalizer on object with CCW.
*/
if (mono_marshal_free_ccw (o) && !finalizer) {
mono_domain_set_internal (caller_domain);
return;
}
#endif
/*
* To avoid the locking plus the other overhead of mono_runtime_invoke (),
* create and precompile a wrapper which calls the finalize method using
* a CALLVIRT.
*/
if (!domain->finalize_runtime_invoke) {
MonoMethod *invoke = mono_marshal_get_runtime_invoke (mono_class_get_method_from_name_flags (mono_defaults.object_class, "Finalize", 0, 0), TRUE);
domain->finalize_runtime_invoke = mono_compile_method (invoke);
}
runtime_invoke = domain->finalize_runtime_invoke;
mono_runtime_class_init (o->vtable);
if (G_UNLIKELY (MONO_GC_FINALIZE_INVOKE_ENABLED ())) {
MONO_GC_FINALIZE_INVOKE ((unsigned long)o, mono_object_get_size (o),
o->vtable->klass->name_space, o->vtable->klass->name);
}
runtime_invoke (o, NULL, &exc, NULL);
if (exc)
mono_internal_thread_unhandled_exception (exc);
mono_domain_set_internal (caller_domain);
}
static void
async_invoke_thread (gpointer data)
{
MonoDomain *domain;
MonoInternalThread *thread;
MonoWSQ *wsq;
ThreadPool *tp;
gboolean must_die;
const gchar *name;
tp = data;
wsq = NULL;
if (!tp->is_io)
wsq = add_wsq ();
thread = mono_thread_internal_current ();
mono_profiler_thread_start (thread->tid);
name = (tp->is_io) ? "IO Threadpool worker" : "Threadpool worker";
mono_thread_set_name_internal (thread, mono_string_new (mono_domain_get (), name), FALSE);
if (tp_start_func)
tp_start_func (tp_hooks_user_data);
data = NULL;
for (;;) {
MonoAsyncResult *ar;
MonoClass *klass;
gboolean is_io_task;
gboolean is_socket;
int n_naps = 0;
is_io_task = FALSE;
ar = (MonoAsyncResult *) data;
if (ar) {
InterlockedIncrement (&tp->busy_threads);
domain = ((MonoObject *)ar)->vtable->domain;
#ifndef DISABLE_SOCKETS
klass = ((MonoObject *) data)->vtable->klass;
is_io_task = !is_corlib_asyncresult (domain, klass);
is_socket = FALSE;
if (is_io_task) {
MonoSocketAsyncResult *state = (MonoSocketAsyncResult *) data;
is_socket = is_socketasyncresult (domain, klass);
ar = state->ares;
switch (state->operation) {
case AIO_OP_RECEIVE:
state->total = ICALL_RECV (state);
break;
case AIO_OP_SEND:
state->total = ICALL_SEND (state);
break;
}
}
#endif
/* worker threads invokes methods in different domains,
* so we need to set the right domain here */
g_assert (domain);
if (mono_domain_is_unloading (domain) || mono_runtime_is_shutting_down ()) {
threadpool_jobs_dec ((MonoObject *)ar);
data = NULL;
ar = NULL;
InterlockedDecrement (&tp->busy_threads);
} else {
mono_thread_push_appdomain_ref (domain);
if (threadpool_jobs_dec ((MonoObject *)ar)) {
data = NULL;
ar = NULL;
mono_thread_pop_appdomain_ref ();
InterlockedDecrement (&tp->busy_threads);
continue;
}
if (mono_domain_set (domain, FALSE)) {
MonoObject *exc;
if (tp_item_begin_func)
tp_item_begin_func (tp_item_user_data);
if (!is_io_task && ar->add_time > 0)
process_idle_times (tp, ar->add_time);
exc = mono_async_invoke (tp, ar);
if (tp_item_end_func)
tp_item_end_func (tp_item_user_data);
if (exc)
mono_internal_thread_unhandled_exception (exc);
if (is_socket && tp->is_io) {
MonoSocketAsyncResult *state = (MonoSocketAsyncResult *) data;
if (state->completed && state->callback) {
MonoAsyncResult *cb_ares;
cb_ares = create_simple_asyncresult ((MonoObject *) state->callback,
(MonoObject *) state);
icall_append_job ((MonoObject *) cb_ares);
}
}
mono_domain_set (mono_get_root_domain (), TRUE);
}
mono_thread_pop_appdomain_ref ();
InterlockedDecrement (&tp->busy_threads);
/* If the callee changes the background status, set it back to TRUE */
mono_thread_clr_state (thread , ~ThreadState_Background);
if (!mono_thread_test_state (thread , ThreadState_Background))
ves_icall_System_Threading_Thread_SetState (thread, ThreadState_Background);
}
}
ar = NULL;
data = NULL;
must_die = should_i_die (tp);
if (!must_die && (tp->is_io || !mono_wsq_local_pop (&data)))
dequeue_or_steal (tp, &data, wsq);
n_naps = 0;
while (!must_die && !data && n_naps < 4) {
gboolean res;
InterlockedIncrement (&tp->waiting);
// Another thread may have added a job into its wsq since the last call to dequeue_or_steal
// Check all the queues again before entering the wait loop
dequeue_or_steal (tp, &data, wsq);
if (data) {
InterlockedDecrement (&tp->waiting);
break;
}
mono_gc_set_skip_thread (TRUE);
#if defined(__OpenBSD__)
while (mono_cq_count (tp->queue) == 0 && (res = mono_sem_wait (&tp->new_job, TRUE)) == -1) {// && errno == EINTR) {
#else
while (mono_cq_count (tp->queue) == 0 && (res = mono_sem_timedwait (&tp->new_job, 2000, TRUE)) == -1) {// && errno == EINTR) {
#endif
if (mono_runtime_is_shutting_down ())
break;
if (THREAD_WANTS_A_BREAK (thread))
mono_thread_interruption_checkpoint ();
}
InterlockedDecrement (&tp->waiting);
mono_gc_set_skip_thread (FALSE);
if (mono_runtime_is_shutting_down ())
break;
must_die = should_i_die (tp);
dequeue_or_steal (tp, &data, wsq);
n_naps++;
}
if (!data && !tp->is_io && !mono_runtime_is_shutting_down ()) {
mono_wsq_local_pop (&data);
if (data && must_die) {
InterlockedCompareExchange (&tp->destroy_thread, 1, 0);
pulse_on_new_job (tp);
}
}
if (!data) {
gint nt;
gboolean down;
while (1) {
nt = tp->nthreads;
down = mono_runtime_is_shutting_down ();
if (!down && nt <= tp->min_threads)
break;
if (down || InterlockedCompareExchange (&tp->nthreads, nt - 1, nt) == nt) {
mono_perfcounter_update_value (tp->pc_nthreads, TRUE, -1);
if (!tp->is_io) {
remove_wsq (wsq);
}
mono_profiler_thread_end (thread->tid);
if (tp_finish_func)
tp_finish_func (tp_hooks_user_data);
return;
}
}
}
}
g_assert_not_reached ();
}
void
ves_icall_System_Threading_ThreadPool_GetAvailableThreads (gint *workerThreads, gint *completionPortThreads)
{
*workerThreads = async_tp.max_threads - async_tp.busy_threads;
*completionPortThreads = async_io_tp.max_threads - async_io_tp.busy_threads;
}