/// <summary>
/// Creates an instance that is registered with the ASP.NET runtime.
/// </summary>
public RegisteredTasks()
{
// Start the count at 1 and decrement it when ASP.NET notifies us we're shutting down.
_shutdown = new CancellationTokenSource();
_count = new AsyncCountdownEvent(1);
_shutdown.Token.Register(() => _count.Signal(), useSynchronizationContext: false);
// Register the object.
HostingEnvironment.RegisterObject(this);
// When the count reaches zero (all tasks have completed and ASP.NET has notified us we are shutting down),
// then unregister this object, and then the _done task is completed.
_done = _count.WaitAsync().ContinueWith(
_ => HostingEnvironment.UnregisterObject(this),
CancellationToken.None,
TaskContinuationOptions.ExecuteSynchronously,
TaskScheduler.Default);
}
public DebugView(AsyncCountdownEvent ce)
{
_ce = ce;
}