Join.java

/*
 * Copyright 2000-2010 JetBrains s.r.o.
 *
 * Licensed 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.community.intellij.plugins.communitycase.history.wholeTree;

import java.util.concurrent.atomic.AtomicInteger;

/**
 * @author irengrig
 */
public class Join {
  private final Runnable myOnFinish;
  private AtomicInteger myCnt;

  public Join(int cnt, Runnable onFinish) {
    myCnt = new AtomicInteger(cnt);
    myOnFinish = onFinish;
  }

  public void complete() {
    final int result = myCnt.decrementAndGet();
    if (result == 0) {
      myOnFinish.run();
    }
  }
}