DEV: Must be call when the object becomes ready to read.
           Relesases the lock of _wait_non_ressources

def call_release(self, arborted=False):
        """DEV: Must be call when the object becomes ready to read.
           Relesases the lock of _wait_non_ressources"""
        self.was_ended = arborted
        try:
            self.trigger.release()
        except (threading.ThreadError, AttributeError):
            pass