rem: ": jackd shutdown, stopping processing"); current->signal_token();
add: ": [callback] jackd shutdown, stopping processing");
context: static void eca_jack_shutdown (void *arg){  AUDIO_IO_JACK_MANAGER* current = static_cast<AUDIO_IO_JACK_MANAGER*>(arg);  ecadebug->msg(ECA_DEBUG::user_objects, 		"(audioio-jack-manager) " + current->jackname_rep + 		": jackd shutdown, stopping processing");  current->signal_token();  current->shutdown_request_rep = true;}