Extract work queue to allow reusing it
Change-Id: I28f7800030a3b9db48e315061509af0746feffcc Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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0900dc08f5
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26862bb834
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@ -43,55 +43,11 @@
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package org.eclipse.jgit.lib;
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import java.util.concurrent.Executors;
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import java.util.concurrent.Future;
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import java.util.concurrent.ScheduledThreadPoolExecutor;
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import java.util.concurrent.ThreadFactory;
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import java.util.concurrent.TimeUnit;
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/** ProgressMonitor that batches update events. */
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public abstract class BatchingProgressMonitor implements ProgressMonitor {
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private static final ScheduledThreadPoolExecutor alarmQueue;
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static final Object alarmQueueKiller;
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static {
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// To support garbage collection, start our thread but
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// swap out the thread factory. When our class is GC'd
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// the alarmQueueKiller will finalize and ask the executor
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// to shutdown, ending the worker.
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//
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int threads = 1;
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alarmQueue = new ScheduledThreadPoolExecutor(threads,
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new ThreadFactory() {
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private final ThreadFactory baseFactory = Executors
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.defaultThreadFactory();
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public Thread newThread(Runnable taskBody) {
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Thread thr = baseFactory.newThread(taskBody);
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thr.setName("JGit-AlarmQueue"); //$NON-NLS-1$
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thr.setDaemon(true);
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return thr;
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}
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});
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alarmQueue.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
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alarmQueue.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
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alarmQueue.prestartAllCoreThreads();
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// Now that the threads are running, its critical to swap out
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// our own thread factory for one that isn't in the ClassLoader.
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// This allows the class to GC.
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//
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alarmQueue.setThreadFactory(Executors.defaultThreadFactory());
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alarmQueueKiller = new Object() {
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@Override
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protected void finalize() {
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alarmQueue.shutdownNow();
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}
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};
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}
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private long delayStartTime;
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private TimeUnit delayStartUnit = TimeUnit.MILLISECONDS;
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@ -219,7 +175,7 @@ private static class Task implements Runnable {
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void delay(long time, TimeUnit unit) {
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display = false;
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timerFuture = alarmQueue.schedule(this, time, unit);
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timerFuture = WorkQueue.getExecutor().schedule(this, time, unit);
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}
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public void run() {
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@ -254,7 +210,8 @@ void update(BatchingProgressMonitor pm, int completed) {
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private void restartTimer() {
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display = false;
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timerFuture = alarmQueue.schedule(this, 1, TimeUnit.SECONDS);
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timerFuture = WorkQueue.getExecutor().schedule(this, 1,
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TimeUnit.SECONDS);
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}
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void end(BatchingProgressMonitor pm) {
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@ -0,0 +1,99 @@
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/*
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* Copyright (C) 2008-2016, Google Inc.
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* and other copyright owners as documented in the project's IP log.
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*
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* This program and the accompanying materials are made available
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* under the terms of the Eclipse Distribution License v1.0 which
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* accompanies this distribution, is reproduced below, and is
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* available at http://www.eclipse.org/org/documents/edl-v10.php
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* - Neither the name of the Eclipse Foundation, Inc. nor the
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* names of its contributors may be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.eclipse.jgit.lib;
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import java.util.concurrent.Executors;
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import java.util.concurrent.ScheduledThreadPoolExecutor;
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import java.util.concurrent.ThreadFactory;
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/**
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* Simple work queue to run tasks in the background
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*/
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class WorkQueue {
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private static final ScheduledThreadPoolExecutor executor;
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static final Object executorKiller;
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static {
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// To support garbage collection, start our thread but
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// swap out the thread factory. When our class is GC'd
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// the executorKiller will finalize and ask the executor
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// to shutdown, ending the worker.
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//
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int threads = 1;
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executor = new ScheduledThreadPoolExecutor(threads,
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new ThreadFactory() {
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private final ThreadFactory baseFactory = Executors
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.defaultThreadFactory();
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public Thread newThread(Runnable taskBody) {
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Thread thr = baseFactory.newThread(taskBody);
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thr.setName("JGit-WorkQueue"); //$NON-NLS-1$
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thr.setDaemon(true);
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return thr;
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}
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});
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executor.setRemoveOnCancelPolicy(true);
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executor.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
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executor.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
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executor.prestartAllCoreThreads();
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// Now that the threads are running, its critical to swap out
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// our own thread factory for one that isn't in the ClassLoader.
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// This allows the class to GC.
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//
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executor.setThreadFactory(Executors.defaultThreadFactory());
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executorKiller = new Object() {
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@Override
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protected void finalize() {
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executor.shutdownNow();
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}
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};
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}
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static ScheduledThreadPoolExecutor getExecutor() {
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return executor;
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}
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}
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