public override void Cancel(bool abortExecution)
{
lock (_lock)
{
_canceledWorkItemsGroup.IsCanceled = true;
_workItemsQueue.Clear();
_workItemsInStpQueue = 0;
_canceledWorkItemsGroup = new CanceledWorkItemsGroup();
}
if (abortExecution)
{
_stp.CancelAbortWorkItemsGroup(this);
}
}
/// <summary>
/// Cleanup the work items queue, hence no more work
/// items are allowed to be queue
/// </summary>
protected virtual void Cleanup()
{
lock (this)
{
// Deactivate only once
if (!_isWorkItemsQueueActive)
{
return;
}
// Don't queue more work items
_isWorkItemsQueueActive = false;
foreach (WorkItem workItem in _workItems)
{
workItem.DisposeOfState();
}
// Clear the work items that are already queued
_workItems.Clear();
// Note:
// I don't iterate over the queue and dispose of work items's states,
// since if a work item has a state object that is still in use in the
// application then I must not dispose it.
// Tell the waiters that they were timed out.
// It won't signal them to exit, but to ignore their
// next work item.
while (_waitersCount > 0)
{
WaiterEntry waiterEntry = PopWaiter();
waiterEntry.Timeout();
}
}
}