public NativeCallbackTimer(int dueTime, int period, INativeCallback callback)
{
this.callback = callback;
timer = new Timer(OnTimer, null, Timeout.Infinite, Timeout.Infinite);
if ((dueTime != Timeout.Infinite) || (period != Timeout.Infinite))
{
timer.Change(dueTime, period);
}
}
public void Initialize(INativeCallback callback)
{
try
{
Callback = callback;
App.IsIslandLaunch = true;
_app = new App();
}
catch (Exception ex)
{
Debug.WriteLine("Failed to create App2 with " + ex.Message);
}
}
public static void QueueNativeCallback(INativeCallback callback)
{
ThreadPool.QueueUserWorkItem(state =>
{
using (callback)
{
Try(callback.Invoke);
}
// The above code appears to be problematic on some .NET runtimes, intermittently
// triggering premature finalization of the callback. That can lead to a crash if
// the callback's finalizer ends up racing against its Dispose method. The call
// below should prevent this condition in all cases.
GC.KeepAlive(callback);
});
}
public static unsafe void *CreateNativeCallbackTimer(int dueTime, int period, INativeCallback callback)
{
return(AddRefHostObject(new NativeCallbackTimer(dueTime, period, callback)));
}