public void AddEvent(ReactorEvent new_event)
{
Monitor.Enter(events);
events.Enqueue(new_event);
Monitor.Pulse(events);
Monitor.Exit(events);
}
/// <summary>
/// Return the next event or null if there are no events and the
/// timeout milliseconds have passed.
/// </summary>
/// <param name="timeout"></param>
/// <returns></returns>
private ReactorEvent GetNextEvent(int timeout)
{
if (timeout > 20)
{
timeout = 20;
}
ReactorEvent nextEvent = null;
// If there's an event queued now, return the next immediately.
Monitor.Enter(events);
if (events.Count > 0)
{
nextEvent = events.Dequeue();
}
Monitor.Exit(events);
if (nextEvent != null)
{
return(nextEvent);
}
// If no timeout because lot's of pending timers, return immediately.
if (timeout == 0)
{
return(null);
}
// Wait for another event to be queued or for the timeout
// to expire.
Monitor.Enter(events);
if (timeout > 0)
{
Monitor.Wait(events, timeout);
}
else
{
Monitor.Wait(events);
}
if (events.Count > 0)
{
nextEvent = events.Dequeue();
}
Monitor.Exit(events);
return(nextEvent);
}
/// <summary>
/// Run timers and return the next event to process
/// </summary>
/// <returns></returns>
public ReactorEvent Run(double current_time, double delta)
{
// By default go to sleep for half a second
double shortest_timeout = 0.5;
List <ReactorTimer> timers_copy = new List <ReactorTimer>(timers);
foreach (ReactorTimer timer in timers_copy)
{
timer.timeout -= delta;
// Call the timer event handler if needed.
if (timer.timeout <= 0)
{
if (timer.last_event_time == 0)
{
timer.last_event_time = current_time;
}
double timer_delta = current_time - timer.last_event_time;
timer.last_event_time = current_time;
timer.HandleTimerEvent(timer_delta);
}
// Check for timer expiry after calling handle event. The timer may have been
// rescheduled in HandleTimerEvent and thus is no longer expired
if (timer.timeout <= 0)
{
timers.Remove(timer);
}
// Record when the next timeout is so we don't block too long in the
// event queue
else if (timer.timeout < shortest_timeout)
{
shortest_timeout = timer.timeout;
}
}
ReactorEvent next_event = GetNextEvent((int)(shortest_timeout * 1000));
if (next_event != null)
{
double queue_time = GetTime() - next_event.event_start;
average_queue_time += queue_time;
}
average_queue_time /= 2;
return(next_event);
}
void ThreadRun()
{
System.Threading.Thread.CurrentThread.CurrentCulture = System.Globalization.CultureInfo.InvariantCulture;
double current_time = GetTime();
bool running = true;
while (running)
{
// Calculate the delta time.
double delta = GetTime() - current_time;
current_time += delta;
// Call the reactor to return the next event the process
// and run any timer functions.
ReactorEvent next_event = Run(current_time, delta);
if (next_event is ReactorShutdownEvent)
{
running = false;
}
else if (next_event is LogEvent)
{
LogEvent log_event = next_event as LogEvent;
if (console)
{
Console.WriteLine(log_event.message);
}
else if (logpath.Length > 0)
{
StreamWriter writer = File.AppendText(logpath);
writer.WriteLine(log_event.message);
writer.Close();
}
}
System.Threading.Thread.Sleep(0);
}
}
