public HighPrecisionTimer(int interval)
{
log.Info("Starting HighPrecisionTimer with" + interval.ToString() + " ms interval");
if (interval < 1)
{
throw new ArgumentOutOfRangeException();
}
System.Diagnostics.Trace.Assert(interval >= 10, "Not reliable/tested, may use too much CPU");
cancelSource = new CancellationTokenSource();
// Used to report timing accuracy for 1 sec, running total
tickTiming = new CircularBuffer.CircularBuffer <int>(1000 / interval, true);
var watch = System.Diagnostics.Stopwatch.StartNew();
long durationMs = 0;
long totalTicks = 0;
long nextStop = interval;
long lastReport = 0;
var task = new Task(() =>
{
while (!this.cancelSource.IsCancellationRequested)
{
long msLeft = nextStop - watch.ElapsedMilliseconds;
if (msLeft <= 0)
{
durationMs = watch.ElapsedMilliseconds;
totalTicks = durationMs / interval;
tickTiming.Put((int)(durationMs - nextStop));
if (durationMs - lastReport >= 1000)
{
// Report
log.Debug(string.Concat("Last second - avg: {0:F1} best: {1} worst: {2}",
tickTiming.Average(), tickTiming.Min(), tickTiming.Max()));
lastReport = durationMs;
}
var handler = Tick;
if (handler != null)
{
handler(this, new TickEventArgs(TimeSpan.FromMilliseconds(durationMs), totalTicks));
}
// Calculate when the next stop is. If we're too slow on the trigger then we'll skip ticks
nextStop = interval * (watch.ElapsedMilliseconds / interval + 1);
}
else if (msLeft < 16)
{
System.Threading.SpinWait.SpinUntil(() => watch.ElapsedMilliseconds >= nextStop);
continue;
}
System.Threading.Thread.Sleep(1);
}
}, cancelSource.Token, TaskCreationOptions.LongRunning);
task.Start();
}
public HighPrecisionTimer(int intervalMs, bool startRunning = true)
{
log.Info("Starting HighPrecisionTimer with {0} ms interval", intervalMs);
if (intervalMs < 1)
throw new ArgumentOutOfRangeException();
System.Diagnostics.Trace.Assert(intervalMs >= 10, "Not reliable/tested, may use too much CPU");
this.IntervalMs = intervalMs;
this.cancelSource = new CancellationTokenSource();
this.taskComplete = new ManualResetEvent(false);
#if PROFILE
// Used to report timing accuracy for 1 sec, running total
tickTiming = new CircularBuffer.CircularBuffer<int>(1000 / intervalMs, true);
execTiming = new CircularBuffer.CircularBuffer<long>(1000 / intervalMs, true);
#endif
var watch = System.Diagnostics.Stopwatch.StartNew();
long durationMs = 0;
long totalTicks = 0;
long nextStop = intervalMs;
#if PROFILE
long lastReport = 0;
#endif
this.task = new Task(() =>
{
var eventArgs = new TickEventArgs();
while (!this.cancelSource.IsCancellationRequested)
{
long msLeft = nextStop - watch.ElapsedMilliseconds;
if (msLeft <= 0)
{
durationMs = watch.ElapsedMilliseconds;
totalTicks = durationMs / intervalMs;
#if PROFILE
var execWatch = System.Diagnostics.Stopwatch.StartNew();
#endif
var handler = Tick;
if (handler != null)
{
eventArgs.Duration = TimeSpan.FromMilliseconds(durationMs);
eventArgs.TotalTicks = totalTicks;
handler(this, eventArgs);
if (eventArgs.Cancel)
break;
}
#if PROFILE
execWatch.Stop();
execTiming.Put(execWatch.ElapsedTicks);
tickTiming.Put((int)(durationMs - nextStop));
if (durationMs - lastReport >= 1000)
{
// Report
log.Debug("HighPTimer avg: {0:F1} best: {1} worst: {2} MaxExec: {3:N1}ms",
tickTiming.Average(), tickTiming.Min(), tickTiming.Max(),
TimeSpan.FromTicks(execTiming.Max()).TotalMilliseconds);
lastReport = durationMs;
}
#endif
// Calculate when the next stop is. If we're too slow on the trigger then we'll skip ticks
nextStop = intervalMs * (watch.ElapsedMilliseconds / intervalMs + 1);
continue;
}
else if (msLeft < 16)
{
System.Threading.SpinWait.SpinUntil(() => watch.ElapsedMilliseconds >= nextStop);
continue;
}
System.Threading.Thread.Sleep(1);
}
this.taskComplete.Set();
}, cancelSource.Token, TaskCreationOptions.LongRunning);
if (startRunning)
this.task.Start();
}
public HighPrecisionTimer2(int intervalMs, bool startRunning = true)
{
this.log = Log.Logger;
this.log.Information("Starting HighPrecisionTimer2 with {0} ms interval", intervalMs);
this.outputValue = new Subject <long>();
if (intervalMs < 1)
{
throw new ArgumentOutOfRangeException();
}
System.Diagnostics.Trace.Assert(intervalMs >= 10, "Not reliable/tested, may use too much CPU");
this.IntervalMs = intervalMs;
this.cancelSource = new CancellationTokenSource();
this.taskComplete = new ManualResetEvent(false);
#if PROFILE
// Used to report timing accuracy for 1 sec, running total
tickTiming = new CircularBuffer.CircularBuffer <int>(1000 / intervalMs, true);
execTiming = new CircularBuffer.CircularBuffer <long>(1000 / intervalMs, true);
#endif
watch = System.Diagnostics.Stopwatch.StartNew();
long durationMs = 0;
long nextStop = intervalMs;
#if PROFILE
long lastReport = 0;
#endif
this.task = new Task(() =>
{
while (!this.cancelSource.IsCancellationRequested)
{
long msLeft = nextStop - watch.ElapsedMilliseconds;
if (msLeft <= 0)
{
durationMs = watch.ElapsedMilliseconds;
#if PROFILE
var execWatch = System.Diagnostics.Stopwatch.StartNew();
#endif
this.outputValue.OnNext(durationMs);
#if PROFILE
execWatch.Stop();
execTiming.Put(execWatch.ElapsedTicks);
tickTiming.Put((int)(durationMs - nextStop));
if (durationMs - lastReport >= 1000)
{
// Report
log.Debug("HighPTimer avg: {0:F1} best: {1} worst: {2} MaxExec: {3:N1}ms",
tickTiming.Average(), tickTiming.Min(), tickTiming.Max(),
TimeSpan.FromTicks(execTiming.Max()).TotalMilliseconds);
lastReport = durationMs;
}
#endif
// Calculate when the next stop is. If we're too slow on the trigger then we'll skip ticks
nextStop = intervalMs * (watch.ElapsedMilliseconds / intervalMs + 1);
continue;
}
else if (msLeft < 16)
{
System.Threading.SpinWait.SpinUntil(() => watch.ElapsedMilliseconds >= nextStop);
continue;
}
System.Threading.Thread.Sleep(1);
}
this.taskComplete.Set();
}, cancelSource.Token, TaskCreationOptions.LongRunning);
if (startRunning)
{
this.task.Start();
}
}