| /* |
| * 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 |
| * |
| * http://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. |
| */ |
| package org.apache.felix.http.lightweight.server; |
| |
| /** |
| * This class implements a simple one-shot gate for threads. The gate |
| * starts closed and will block any threads that try to wait on it. Once |
| * opened, all waiting threads will be released. The gate cannot be reused. |
| **/ |
| public class ThreadGate |
| { |
| private boolean m_open = false; |
| |
| /** |
| * Open the gate and release any waiting threads. |
| **/ |
| public synchronized void open() |
| { |
| m_open = true; |
| notifyAll(); |
| } |
| |
| /** |
| * Wait for the gate to open. |
| * @throws java.lang.InterruptedException If the calling thread is interrupted; |
| * the gate still remains closed until opened. |
| **/ |
| public synchronized void await() throws InterruptedException |
| { |
| while (!m_open) |
| { |
| wait(); |
| } |
| } |
| } |