private static extern uint timeSetEvent(
uint uDelay,
uint uResolution,
[MarshalAs(UnmanagedType.FunctionPtr)] MmTimerProc lpTimeProc,
uint dwUser,
int fuEvent
);
public static uint SetTimer(int delay, int resolution, MmTimerProc callback, int user, int eventType)
{
Thread schedulerThread = new Thread(() => ScheduleThread(delay, callback, (TimerEventType)eventType));
SchedulerCatalog.Add(schedulerThread);
schedulerThread.Start();
return((uint)SchedulerCatalog.IndexOf(schedulerThread));
}
private static void ScheduleThread(int fireTime, MmTimerProc callback, TimerEventType schedulerType)
{
try
{
Stopwatch sw = new Stopwatch();
repeatSchedule:
sw.Start();
while (sw.ElapsedMilliseconds < fireTime)
{
Thread.Sleep(1);
}
sw.Reset();
callback((uint)SchedulerCatalog.IndexOf(Thread.CurrentThread), 0, IntPtr.Zero, 0, 0);
if (schedulerType == TimerEventType.TIME_PERIODIC)
{
goto repeatSchedule;
}
}
catch (ThreadInterruptedException e)
{
Console.WriteLine($"Thread interrupted (callback={callback.Method.Name}())");
}
}
public WinMmTimer(int frequency)
{
_callback = (timerid, msg, user, dw1, dw2) => Tick?.Invoke(null, EventArgs.Empty);
_frequency = frequency;
}
public NativeTimer(MmTimerProc callback, int frequency)
{
_callback = callback;
_frequency = frequency;
}
