forked from enlightenment/efl
ecore: prevent spurious wakeup and lock the right mutex.
SVN revision: 63565
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222644dc67
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f749139212
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@ -65,6 +65,8 @@ struct _Ecore_Safe_Call
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Eina_Lock m;
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Eina_Condition c;
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int current_id;
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Eina_Bool sync : 1;
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Eina_Bool suspend : 1;
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};
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@ -82,6 +84,10 @@ static Eina_Condition _thread_cond;
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static Eina_Lock _thread_feedback_mutex;
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static Eina_Condition _thread_feedback_cond;
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static Eina_Lock _thread_id_lock;
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static int _thread_id = -1;
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static int _thread_id_max = 0;
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Eina_Lock _ecore_main_loop_lock;
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int _ecore_main_lock_count;
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@ -164,6 +170,7 @@ ecore_init(void)
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eina_lock_new(&_thread_feedback_mutex);
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eina_condition_new(&_thread_feedback_cond, &_thread_feedback_mutex);
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_thread_call = ecore_pipe_add(_thread_callback, NULL);
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eina_lock_new(&_thread_id_lock);
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eina_lock_new(&_ecore_main_loop_lock);
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@ -216,6 +223,7 @@ ecore_shutdown(void)
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eina_lock_free(&_thread_mutex);
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eina_condition_free(&_thread_feedback_cond);
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eina_lock_free(&_thread_feedback_mutex);
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eina_lock_free(&_thread_id_lock);
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if (_ecore_fps_debug) _ecore_fps_debug_shutdown();
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_ecore_poller_shutdown();
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@ -340,14 +348,24 @@ ecore_thread_main_loop_begin(void)
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order = malloc(sizeof (Ecore_Safe_Call));
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if (!order) return -1;
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eina_lock_take(&_thread_id_lock);
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order->current_id = ++_thread_id_max;
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if (order->current_id < 0)
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{
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_thread_id_max = 0;
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order->current_id = ++_thread_id_max;
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}
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eina_lock_release(&_thread_id_lock);
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eina_lock_new(&order->m);
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eina_condition_new(&order->c, &order->m);
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order->suspend = EINA_TRUE;
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eina_lock_take(&order->m);
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_ecore_main_loop_thread_safe_call(order);
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eina_lock_take(&order->m);
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eina_condition_wait(&order->c);
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while (order->current_id != _thread_id)
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eina_condition_wait(&order->c);
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eina_lock_release(&order->m);
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eina_main_loop_define();
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@ -360,6 +378,8 @@ ecore_thread_main_loop_begin(void)
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EAPI int
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ecore_thread_main_loop_end(void)
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{
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int current_id;
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if (_thread_loop == 0)
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{
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ERR("the main loop is not locked ! No matching call to ecore_thread_main_loop_begin().");
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@ -377,9 +397,15 @@ ecore_thread_main_loop_end(void)
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if (_thread_loop > 0)
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return _thread_loop;
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eina_lock_take(&_thread_feedback_mutex);
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current_id = _thread_id;
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eina_lock_take(&_thread_mutex);
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eina_condition_broadcast(&_thread_cond);
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eina_condition_wait(&_thread_feedback_cond);
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eina_lock_release(&_thread_mutex);
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eina_lock_take(&_thread_feedback_mutex);
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while (current_id == _thread_id)
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eina_condition_wait(&_thread_feedback_cond);
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eina_lock_release(&_thread_feedback_mutex);
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return 0;
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@ -649,14 +675,20 @@ _thread_callback(void *data __UNUSED__,
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{
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eina_lock_take(&_thread_mutex);
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_thread_id = call->current_id;
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eina_condition_broadcast(&call->c);
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eina_condition_wait(&_thread_cond);
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eina_lock_release(&_thread_mutex);
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_thread_id = -1;
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eina_main_loop_define();
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eina_lock_take(&_thread_feedback_mutex);
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eina_condition_broadcast(&_thread_feedback_cond);
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eina_lock_release(&_thread_feedback_mutex);
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_thread_safe_cleanup(call);
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free(call);
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