/// <summary>
///
/// </summary>
/// <param name="timeoutMilliSecs"></param>
public void Suspend(int timeoutMilliSecs = 0)
{
if (EngineStatus == EngineStatusEnum.NonState // not started yet
| EngineStatus == EngineStatusEnum.PausedState // already suspended
| ShouldCancelAction(EngineStatusEnum.PausedState)) // or client has cancelled.
{
return;
}
_agentCmdSlag = new AgentCommandSlag()
{
StatusRequest = EngineStatusEnum.PausedState,
TimeOut = timeoutMilliSecs == 0 ? -1 : timeoutMilliSecs
};
_intervalDelayEvent.Set();
}
/// <summary>
///
/// </summary>
/// <param name="timeOut"></param>
public void Shutdown(int timeOut = 0)
{
if (EngineStatus == EngineStatusEnum.NonState
| ShouldCancelAction(EngineStatusEnum.NonState))
{
return;
}
_agentCmdSlag = new AgentCommandSlag()
{
StatusRequest = EngineStatusEnum.NonState,
TimeOut = timeOut
};
_intervalDelayEvent.Set();
_pauseEvent.Set();
}
/// <summary>
///
/// </summary>
protected void ServiceActionEngine()
{
void ExecutePause()
{
if (_intervalDelayEvent.WaitOne(IntervalDelay))
{
if (EngineStatus == EngineStatusEnum.NonState)
{
OnReadyState?.Invoke(this, new EventArgs());
_pauseEvent.WaitOne(Timeout.Infinite);
EngineStatus = EngineStatusEnum.RunningState;
OnEngineStatusChanged?.Invoke(this, new EngineStatusChangedEventArgs(EngineStatus));
}
if (_agentCmdSlag != null)
{
switch (_agentCmdSlag.StatusRequest)
{
case EngineStatusEnum.PausedState:
EngineStatus = EngineStatusEnum.PausedState;
OnEngineStatusChanged?.Invoke(this, new EngineStatusChangedEventArgs(EngineStatus));
_pauseEvent.WaitOne(
_agentCmdSlag.TimeOut < 0 ? Timeout.Infinite : _agentCmdSlag.TimeOut);
EngineStatus = EngineStatusEnum.RunningState;
break;
case EngineStatusEnum.NonState:
_initialized = false;
_firstTimeTick = false;
_stopEvent.Set();
_intervalDelayEvent = new AutoResetEvent(true);
_pauseEvent = new AutoResetEvent(false);
ServiceActionOnShutdown(_agentCmdSlag.TimeOut);
EngineStatus = EngineStatusEnum.NonState;
break;
}
_agentCmdSlag = null;
OnEngineStatusChanged?.Invoke(this, new EngineStatusChangedEventArgs(EngineStatus));
}
Thread.Sleep(1);
}
}
lock (_locker)
{
do
{
if (_firstTimeTick)
{
_firstTimeTick = false;
ExecutePause();
continue;
}
_running = true;
ServiceActionCallback();
ExecutePause();
}while (!_stopEvent.WaitOne(0));
// <- If millisecondsTimeout is zero, the method does not block.
// It will test the state of the wait handle and returns immediately.
_running = false;
}
}
