internal static void InvokeUnhandledTimerException(TimerExceptionEventArgs e)
{
UnhandledTimerException?.Invoke(e);
}
/// <summary>
/// Slices the timer thread and calls OnTick() method.
/// </summary>
internal static void Run()
{
var measureSlice = new Stopwatch();
var measureTimer = new Stopwatch();
while (!Service.IsStopping)
{
try
{
//Removed lock (fQueue) wrapping the entire block, seemed unnecessary since it's a concurrent queue.
measureSlice.Start();
int index = 0;
while (index < fBreakCount && fQueue.Count != 0)
{
Timer t;
if (!fQueue.TryDequeue(out t))
{
return;
}
try
{
measureTimer.Start();
t.OnTick();
measureTimer.Stop();
if (measureTimer.ElapsedMilliseconds > 50)
{
Service.Logger.Log(
LogLevel.Warning,
String.Format("Slow Timer: {0}, {1}ms.", t.ToString(), measureTimer.ElapsedMilliseconds)
);
}
measureTimer.Reset();
}
catch (Exception ex)
{
TimerExceptionEventArgs args = new TimerExceptionEventArgs(t, ex);
if (t.OnError != null) // There is a specific handler attached, execute that one
{
t.OnError(args);
}
if (!args.Handled) // Still not handled, try the global handler
{
Service.InvokeUnhandledTimerException(args);
}
if (args.StopTimer)
{
t.Stop();
}
if (!args.Handled)
{
throw;
}
}
t.fQueued = false;
++index;
}
// Calculate the time we have to sleep
measureSlice.Stop();
var interval = 1000000 * 33; // 33 millisecond interval intended
var sleepDuration = (int)Math.Max((interval - measureSlice.ElapsedTicks) / 1000000, 1);
// Sleep the specified time, aiming for predictable flush interval
Thread.Sleep(sleepDuration);
measureSlice.Reset();
}
catch (Exception ex)
{
// Log the exception, but do not stop the thread.
Service.Logger.Log(ex);
}
}
}
