Exemple #1
0
        private void ContinueEnumerator(bool outsideOfSyncContext)
        {
            if (_syncContext != null && outsideOfSyncContext)
            {
                _syncContext.Post(SyncContextContinueEnumerator, this);
                return;
            }

            Exception caughtException = null;

            lock (_enumeratorLock)
            {
                bool stillGoing = false;
                try
                {
                    while ((stillGoing = _enumerator.MoveNext()))
                    {
                        if (HasBeenCancelled())
                        {
                            continue;
                        }

                        int expectedResultCount = _enumerator.Current;
                        if (expectedResultCount == 0)
                        {
                            ThreadPool.QueueUserWorkItem(ThreadPoolContinueEnumerator, this);
                            return;
                        }

                        _waitCount.WriteLock(x => expectedResultCount);
                        return;
                    }
                }
                catch (Exception ex)
                {
                    caughtException = ex;
                    throw;
                }
                finally
                {
                    if (!stillGoing)
                    {
                        _enumerator.Dispose();

                        if (caughtException != null)
                        {
                            _asyncResult.SetAsCompleted(caughtException);
                        }
                        else
                        {
                            _asyncResult.SetAsCompleted();
                        }
                    }
                }
            }
        }
Exemple #2
0
 public IAsyncResult Result()
 {
     return(_resultQueue.WriteLock(x => x.Dequeue()));
 }