public PumpDisabler(Dispatcher dispatcher)
{
this.dispatcher = dispatcher;
this.disabled = this.dispatcher.DisableProcessing();
if (dispatcher.IsDisabled())
{
disabledDispatchers[this.dispatcher]++;
}
else
{
disabledDispatchers.Add(dispatcher, 1);
}
}
public DispatcherProcessingDisabled DisableProcessing()
{
if (this != FromThread(Thread.CurrentThread))
throw new InvalidOperationException("The calling thread cannot access this object because a different thread owns it.");
myDisableProcessingCount++;
DispatcherProcessingDisabled ret = new DispatcherProcessingDisabled();
ret.myDispatcher = this;
return ret;
}
/// <summary>
/// Disable the event processing of the dispatcher.
/// </summary>
/// <remarks>
/// This is an advanced method intended to elliminate the chance of
/// unrelated reentrancy. The effect of disabling processing is:
/// 1) CLR locks will not pump messages internally.
/// 2) No one is allowed to push a frame.
/// 3) No message processing is permitted.
/// </remarks>
public DispatcherProcessingDisabled DisableProcessing()
{
VerifyAccess();
// Turn off processing.
_disableProcessingCount++;
DispatcherProcessingDisabled dpd = new DispatcherProcessingDisabled();
dpd._dispatcher = this;
return dpd;
}