private void AsyncRun(Func <bool> asyncAction)
{
try {
using (_messages = new BlockingCollection <TaskCompletionSource <bool> >()) {
// spawn the activity off in another thread.
Task.Factory.StartNew(() => {
try {
if (!IsInitialized)
{
Init();
}
return(asyncAction());
} catch (Exception e) {
Error("MSG:UnhandledException", ErrorCategory.InvalidOperation.ToString(), e.Message, "{0}/{1}/{2}", e.GetType().Name, e.Message, e.StackTrace);
} finally {
// when the task is done, mark the msg queue as complete
if (_messages != null)
{
_messages.CompleteAdding();
}
}
return(false);
}, TaskCreationOptions.LongRunning);
// process the queue of messages back in the main thread so that they
// can properly access the non-thread-safe-things in cmdlet
foreach (var message in _messages.GetBlockingEnumerable(CancellationEvent.Token))
{
InvokeMessage(message);
}
}
if (_pipelineStopped != null)
{
throw _pipelineStopped;
}
} finally {
_messages = null;
_pipelineStopped = null;
}
}
public IEnumerable <T> GetBlockingEnumerable()
{
return(Results.GetBlockingEnumerable(_cancellationTokenSource.Token));
}
public IEnumerator <object> GetEnumerator()
{
return(_output.GetBlockingEnumerable().GetEnumerator());
}