Method runThread

src/rtmidi.cpp:172–200

	}

	void runThread() {
		system::setThreadName("RtMidi output");

		std::unique_lock<decltype(mutex)> lock(mutex);
		while (!stopped) {
			if (messageQueue.empty()) {
				// No messages. Wait on the CV to be notified.
				cv.wait(lock);
			}
			else {
				// Get earliest message
				const MessageSchedule& ms = messageQueue.top();
				double duration = ms.timestamp - system::getTime();

				// If we need to wait, release the lock and wait for the timeout or notify_one().
				// If the top message has a NAN timestamp, this condition is false and the message is sent immediately.
				// Don't bother waiting if duration is close to zero. Just send the message immediately. 100 us is less than typical jitter for MIDI output devices.
				if (duration > 1e-4) {
					// If this returns std::cv_status::timeout, it does NOT imply that notify_one() was not called, so a new message may have been pushed. So we must always restart the loop and get the top message again.
					cv.wait_for(lock, std::chrono::duration<double>(duration));
					continue;
				}

				// Send and remove from queue
				sendMessageNow(ms.message);
				messageQueue.pop();
			}
		}
	}

	void sendMessageNow(const midi::Message& message) {
		try {