/// <summary>
/// Initializes the shutdown signaling with optional connection to a global shutdown signaling object.
/// </summary>
/// <param name="GlobalShutdown">
/// Global shutdown signaling object that the newly created shutdown signaling object will be connected to.
/// This can be null if we are initializing the global shutdown object that exists on itself.
/// </param>
public ComponentShutdown(ComponentShutdown GlobalShutdown)
{
if (GlobalShutdown == null)
{
return;
}
registration = ThreadPool.RegisterWaitForSingleObject(GlobalShutdown.ShutdownEvent, WaitOrTimerCallback, this, Timeout.InfiniteTimeSpan, true);
}
/// <summary>
/// Callback routine that is called once the global shutdown event is set.
/// </summary>
/// <param name="state">Component shutdown instance.</param>
/// <param name="TimedOut">Not used.</param>
private static void WaitOrTimerCallback(object state, bool TimedOut)
{
log.Trace("()");
ComponentShutdown cs = (ComponentShutdown)state;
cs.registration.Unregister(null);
log.Trace("(-)");
}
/// <summary>
/// Initializes a component and connects its shutdown signaling to the global shutdown.
/// </summary>
/// <param name="GlobalShutdown">Global shutdown signaling object.</param>
public Component()
{
ShutdownSignaling = new ComponentShutdown(Base.Components.GlobalShutdown);
}