public OneShotDispatcherTimerPage()
{
InitializeComponent();
_oneShotTimer = new OneShotDispatcherTimer();
_oneShotTimer.Duration = OneShotTimerDuration;
_oneShotTimer.Fired += OnOneShotTimerFired;
}
private void OnCachePruningTimerFired(object sender, EventArgs e)
{
if (sender != _cachePruningTimer)
{
return;
}
_cachePruningTimer = null;
_cachePruningTimestamp = DateTime.UtcNow;
ThreadPool.QueueUserWorkItem((state) => { PruneCache(); });
}
private void RequestCachePruning()
{
lock (this)
{
if (_cachePruningTimer != null || _cachePruningTimestamp.Add(CachePruningInterval) >= DateTime.UtcNow)
{
return;
}
Deployment.Current.Dispatcher.BeginInvoke(() =>
{
if (_cachePruningTimer != null)
{
return;
}
_cachePruningTimer = OneShotDispatcherTimer.CreateAndStart(CachePruningTimerDuration, OnCachePruningTimerFired);
});
}
}
