org.compass.core.util.concurrent.TimedBlockingPolicy Maven / Gradle / Ivy
/*
* Copyright 2004-2009 the original author or authors.
*
* 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.compass.core.util.concurrent;
import java.util.concurrent.RejectedExecutionException;
import java.util.concurrent.RejectedExecutionHandler;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
/**
* A handler for rejected tasks that inserts the specified element into this
* queue, waiting if necessary up to the specified wait time for space to become
* available.
*
* @author kimchy
*/
public class TimedBlockingPolicy implements RejectedExecutionHandler {
private final long waitTime;
/**
* @param waitTime wait time in milliseconds for space to become available.
*/
public TimedBlockingPolicy(long waitTime) {
this.waitTime = waitTime;
}
public void rejectedExecution(Runnable r, ThreadPoolExecutor executor) {
try {
boolean successful = executor.getQueue().offer(r, waitTime, TimeUnit.MILLISECONDS);
if (!successful)
throw new RejectedExecutionException("Rejected execution after waiting "
+ waitTime + " ms for task [" + r.getClass() + "] to be executed.");
} catch (InterruptedException e) {
throw new RejectedExecutionException(e);
}
}
}