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/tests/com/google/appengine/datanucleus/SequenceTestLock.java

http://datanucleus-appengine.googlecode.com/
Java | 29 lines | 6 code | 3 blank | 20 comment | 0 complexity | 5bfdcd835380d8b886b3c207b27d07c8 MD5 | raw file
 1/*
 2 * Copyright (C) 2010 Google Inc
 3 *
 4 * Licensed under the Apache License, Version 2.0 (the "License");
 5 * you may not use this file except in compliance with the License.
 6 * You may obtain a copy of the License at
 7 *
 8 * http://www.apache.org/licenses/LICENSE-2.0
 9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16package com.google.appengine.datanucleus;
17
18import java.util.concurrent.Semaphore;
19
20/**
21 * A lock that we use to prevent sequence tests from running concurrently.
22 *
23 * @author Max Ross <max.ross@gmail.com>
24 */
25public final class SequenceTestLock {
26  private SequenceTestLock() {}
27  
28  public static final Semaphore LOCK = new Semaphore(1);
29}