/// <summary>
/// This gives an accurate estimate of DateTime from ticks over shorter intervals, it won't be accurate over really long intervals though
/// </summary>
DateTime PerfCounterRawDateTime()
{
long result;
Startwatch.QueryPerformanceCounter(out result);
return(DateTime.Now.AddSeconds(-result / Stopwatch.Frequency));
}
/// <summary>
/// Stop time tracking on the Startwatch, allowing for representation of a time period.
/// </summary>
/// <returns>true if the watch was running before the call, false if it was already stopped</returns>
public bool Stop()
{
if (_stopTimestamp.Value == 0)
{
Startwatch.QueryPerformanceCounter(out _stopTimestamp.Value);
return(true);
}
return(false);
}
/// <summary>
/// Initialize new Startwatch from System.Diagnostics.Stopwatch,
/// if the System.Diagnostics.Stopwatch is actively running then the Startwatch will be running and have the same initial duration
/// if the System.Diagnostics.Stopwatch is stopped then the Startwatch will be stopped
/// the Startwatch will not be synchronized to the System.Diagnostics.Stopwatch in any way after it is created
/// </summary>
public static Startwatch FromStopwatch(Stopwatch watch)
{
if (watch.IsRunning)
{
long result;
Startwatch.QueryPerformanceCounter(out result);
return(new Startwatch(result - watch.ElapsedTicks));
}
else
{
return(new Startwatch(0, watch.ElapsedTicks));
}
}
/// <summary>
/// Create a started stopwatch
/// </summary>
public Startwatch()
{
_stopTimestamp = new RefTimestamp();
_startTimestamp = new RefTimestamp();
Startwatch.QueryPerformanceCounter(out _startTimestamp.Value);
}
