public void Start()
{
lock (_lock)
{
if (_state == WorkerState.Stopped)
{
_requestedState = _state = WorkerState.Running;
_eventWaiter.Reset();
_workerTask = new Thread(() =>
{
while (true)
{
if (_state == WorkerState.Stopped)
{
break;
}
bool haveMoreWork = false;
if (_state == WorkerState.Running)
{
try
{
haveMoreWork = _workerJob();
}
catch
{
_requestedState = _state = WorkerState.Stopped;
_isFaulted = true;
throw;
}
// Check if state has been changed in workerJob thread.
if (_requestedState != _state && _requestedState == WorkerState.Stopped)
{
_state = _requestedState;
break;
}
}
if (!haveMoreWork || _state == WorkerState.Suspended)
{
_eventWaiter.WaitOne(Timeout.Infinite);
}
_state = _requestedState;
}
});
_workerTask.Name = Name;
_workerTask.IsBackground = true;
_workerTask.Start();
SpinWait.SpinUntil(() => _workerTask.IsAlive);
}
else
{
throw new InvalidOperationException("The worker is already started.");
}
}
}
public void Start()
{
lock (_lock)
{
if (_state == State.Stopped)
{
_requestedState = _state = State.Running;
_eventWaiter.Reset();
// http://blogs.msdn.com/b/pfxteam/archive/2010/06/13/10024153.aspx
// prefer using Task.Factory.StartNew for .net 4.0. For .net 4.5 Task.Run is the better option.
_workerTask = Task.Factory.StartNew(x =>
{
while (true)
{
if (_state == State.Stopped)
{
break;
}
bool haveMoreWork = false;
if (_state == State.Running)
{
haveMoreWork = _workerJob();
// Check if state has been changed in workerJob thread.
if (_requestedState != _state && _requestedState == State.Stopped)
{
_state = _requestedState;
break;
}
}
if (!haveMoreWork || _state == State.Suspended)
{
_eventWaiter.WaitOne(Timeout.Infinite);
}
_state = _requestedState;
}
}, CancellationToken.None, TaskCreationOptions.LongRunning);
SpinWait.SpinUntil(() => _workerTask.Status == TaskStatus.Running);
}
else
{
throw new InvalidOperationException("The worker is already started.");
}
}
}