Java Thread Executor Execute runInBackground(Runnable run)

Description

run In Background

License

Open Source License

Declaration

public static Future<?> runInBackground(Runnable run) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2008, 2015, Washington University in St. Louis.
 * All rights reserved./* w  w  w . ja v a  2s.  c o m*/
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * 3. Products derived from the software may not be called "Looking Glass", nor
 *    may "Looking Glass" appear in their name, without prior written permission
 *    of Washington University in St. Louis.
 *
 * 4. All advertising materials mentioning features or use of this software must
 *    display the following acknowledgement: "This product includes software
 *    developed by Washington University in St. Louis"
 *
 * 5. The gallery of art assets and animations provided with this software is
 *    contributed by Electronic Arts Inc. and may be used for personal,
 *    non-commercial, and academic use only. Redistributions of any program
 *    source code that utilizes The Sims 2 Assets must also retain the copyright
 *    notice, list of conditions and the disclaimer contained in
 *    The Alice 3.0 Art Gallery License.
 *
 * DISCLAIMER:
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND.  ANY AND ALL
 * EXPRESS, STATUTORY OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY,  FITNESS FOR A PARTICULAR PURPOSE,
 * TITLE, AND NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS,
 * COPYRIGHT OWNERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, PUNITIVE OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING FROM OR OTHERWISE RELATING TO
 * THE USE OF OR OTHER DEALINGS WITH THE SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *******************************************************************************/

import java.util.concurrent.CancellationException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;
import java.util.concurrent.SynchronousQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

public class Main {
    private static final ExecutorService workerPool = new ThreadPoolExecutor(0, Integer.MAX_VALUE, 60L,
            TimeUnit.SECONDS, new SynchronousQueue<Runnable>()) {

        @Override
        protected void afterExecute(Runnable r, Throwable t) {
            // We must make sure that we don't swallow exceptions, we must propagate them back.
            if ((t == null) && (r instanceof Future<?>)) {
                try {
                    Future<?> future = (Future<?>) r;
                    assert future.isDone();
                    future.get();
                } catch (CancellationException ce) {
                    t = ce;
                } catch (ExecutionException ee) {
                    t = ee.getCause();
                } catch (InterruptedException ie) {
                    Thread.currentThread().interrupt(); // ignore/reset
                }
            }
            if (t != null) {
                Thread.getDefaultUncaughtExceptionHandler().uncaughtException(Thread.currentThread(), t);
            }
        };
    };

    public static Future<?> runInBackground(Runnable run) {
        return workerPool.submit(run);
    }
}

Related

1. invokeOnBackgroundThread(Runnable runnable)
2. run(Runnable target)
3. runConcurrently(final Runnable[] threads)
4. runConcurrently(Runnable... tasks)
5. runInBackground(final Runnable task)
6. runInNewThread(Runnable task)
7. runOnUI(Runnable runnable)
8. runWithTimeout(final Runnable runnable, long timeout, TimeUnit timeUnit)