public void Start()
{
switch (Interlocked.Read(ref this.workerState))
{
case WORKER_STATE_INIT:
if (InterLockedEx.CompareAndSet(ref this.workerState, WORKER_STATE_STARTED, WORKER_STATE_INIT))
{
_workerThread.Start();
}
break;
case WORKER_STATE_STARTED:
break;
case WORKER_STATE_SHUTDOWN:
throw new HashedWheelTimerException("HashedWheelTimer 不支持的停止以后再次开启。");
default:
throw new HashedWheelTimerException("HashedWheelTimer 状态错误。");
}
// Wait until the startTime is initialized by the worker.
while (startTime == 0)
{
_startTimeInitialized.Wait();
}
}
public IEnumerable <ITimeout> Stop()
{
if (Thread.CurrentThread == _workerThread)
{
throw new InvalidOperationException(
$"{nameof(HashedWheelTimer)}.{nameof(HashedWheelTimer.Stop)} 不能在 worker 线程被调用。");
}
if (!InterLockedEx.CompareAndSet(ref this.workerState, WORKER_STATE_SHUTDOWN, WORKER_STATE_STARTED))
{
// workerState can be 0 or 2 at this moment - let it always be 2.
Interlocked.Exchange(ref this.workerState, WORKER_STATE_SHUTDOWN);
misuseDetector.Decrease();
return(Enumerable.Empty <ITimeout>());
}
//等待线程处理完成。
while (_workerThread.IsAlive)
{
_worker.Stop();
_workerThread.Join(100);
}
misuseDetector.Decrease();
return(_worker.UnprocessedTimeouts());
}
public bool CompareAndSetState(int expected, int state)
{
return(InterLockedEx.CompareAndSet(ref this.state, state, expected));
}