| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * https://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| using System; |
| using System.Threading; |
| |
| namespace Avro.ipc |
| { |
| public class CountdownLatch : IDisposable |
| { |
| private ManualResetEvent evt; |
| private int currentCount; |
| |
| public int CurrentCount |
| { |
| get { return currentCount; } |
| } |
| |
| public CountdownLatch(int count) |
| { |
| currentCount = count; |
| evt = new ManualResetEvent(false); |
| } |
| |
| public void Signal() |
| { |
| if (Interlocked.Decrement(ref currentCount) == 0) |
| evt.Set(); |
| } |
| |
| public void Wait() |
| { |
| evt.WaitOne(); |
| } |
| |
| public bool Wait(int milliseconds) |
| { |
| return evt.WaitOne(milliseconds); |
| } |
| |
| public void Dispose() |
| { |
| Dispose(true); |
| GC.SuppressFinalize(this); |
| } |
| |
| ~CountdownLatch() |
| { |
| // Finalizer calls Dispose(false) |
| Dispose(false); |
| } |
| |
| protected virtual void Dispose(bool disposing) |
| { |
| if (disposing) |
| { |
| // free managed resources |
| if (evt != null) |
| { |
| evt.Close(); |
| evt = null; |
| } |
| } |
| } |
| } |
| } |