| /* |
| * Copyright 2009-2010 by The Regents of the University of California |
| * 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 from |
| * |
| * 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 edu.uci.ics.hyracks.control.cc.jobqueue; |
| |
| import java.util.concurrent.LinkedBlockingQueue; |
| import java.util.logging.Logger; |
| |
| public class JobQueue { |
| private static final Logger LOGGER = Logger.getLogger(JobQueue.class.getName()); |
| |
| private final LinkedBlockingQueue<Runnable> queue; |
| private final JobThread thread; |
| |
| public JobQueue() { |
| queue = new LinkedBlockingQueue<Runnable>(); |
| thread = new JobThread(); |
| thread.start(); |
| } |
| |
| public void schedule(Runnable runnable) { |
| LOGGER.info("Scheduling: " + runnable); |
| queue.offer(runnable); |
| } |
| |
| public void scheduleAndSync(SynchronizableRunnable sRunnable) throws Exception { |
| schedule(sRunnable); |
| sRunnable.sync(); |
| } |
| |
| private class JobThread extends Thread { |
| JobThread() { |
| setDaemon(true); |
| } |
| |
| @Override |
| public void run() { |
| Runnable r; |
| while (true) { |
| try { |
| r = queue.take(); |
| } catch (InterruptedException e) { |
| continue; |
| } |
| try { |
| r.run(); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| } |
| } |
| } |
| } |