private T Execute <T>(Func <T> func, int timeout)
{
if (_thread == null)
{
throw new InvalidOperationException("Object has been disposed");
}
AutoResetEvent ev = new AutoResetEvent(false);
var item = new QueuedExecution {
Func = () => func(),
Trigger = ev
};
_queue.Enqueue(item);
AwaitTimeout(ev, timeout, item);
object result;
if (_results.TryRemove(ev, out result))
{
Exception ex = result as Exception;
if (ex != null)
{
Logger.Warn(ex.Message);
Logger.Warn(ex.StackTrace);
ExceptionDispatchInfo.Capture(ex.InnerException ?? ex).Throw();
}
}
return((T)result);
}
public void Execute(Action func, int timeout = ThreadTimeout, bool expectLongOperation = false)
{
if (_thread == null)
{
throw new InvalidOperationException("Object has been disposed");
}
AutoResetEvent ev = new AutoResetEvent(false);
var item = new QueuedExecution {
Action = () => func(),
Trigger = ev,
IsLongRunning = expectLongOperation
};
_queue.Enqueue(item);
AwaitTimeout(ev, timeout, item);
if (_results.ContainsKey(ev))
{
object val;
if (_results.TryRemove(ev, out val))
{
var ex = val as Exception;
Logger.Warn(ex.Message);
Logger.Warn(ex.StackTrace);
ExceptionDispatchInfo.Capture(ex).Throw();
}
}
}
private void AwaitTimeout(AutoResetEvent ev, int timeout, QueuedExecution item)
{
if (ev.WaitOne(timeout, true))
{
return;
}
// We're in a expected long running operation. Just wait.
while (_exceptionOverride)
{
Logger.Info("Timed out during long running operation, awaiting..");
if (ev.WaitOne(timeout / 10, true))
{
return; // Success
}
}
throw new Exception($"Operation never terminated: Started: {item.IsStarted}");
}
