Timer MonitorProcessOutput(Process process, TimeSpan timeout) {
Contract.Requires<ArgumentNullException>(process != null);
Contract.Requires<ArgumentNullException>(timeout != null);
var state = process.MonitorProcessOutput();
_monitorStarted.OnNext(Tuple.Create(process.StartInfo, process.Id, "Output"));
return new TimerWithElapsedCancellation(MonitorInterval,
() => OnOutputMonitorElapsed(process, state, timeout),
(o, args) => _monitorStopped.OnNext(Tuple.Create(process.StartInfo, process.Id, "Output")));
}
