/*
* Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package com.sun.xml.internal.ws.api.pipe;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicInteger;
import com.sun.xml.internal.ws.api.message.Packet;
/**
* Collection of {@link Fiber}s.
* Owns an {@link Executor} to run them.
*
* @author Kohsuke Kawaguchi
* @author Jitendra Kotamraju
*/
public class Engine {
private volatile Executor threadPool;
public final String id;
public Engine(String id, Executor threadPool) {
this(id);
this.threadPool = threadPool;
}
public Engine(String id) {
this.id = id;
}
public void setExecutor(Executor threadPool) {
this.threadPool = threadPool;
}
void addRunnable(Fiber fiber) {
if(threadPool==null) {
synchronized(this) {
threadPool = Executors.newCachedThreadPool(new DaemonThreadFactory());
}
}
threadPool.execute(fiber);
}
/**
* Creates a new fiber in a suspended state.
*
* <p>
* To start the returned fiber, call {@link Fiber#start(Tube,Packet,Fiber.CompletionCallback)}.
* It will start executing the given {@link Tube} with the given {@link Packet}.
*
* @return new Fiber
*/
public Fiber createFiber() {
return new Fiber(this);
}
private static class DaemonThreadFactory implements ThreadFactory {
static final AtomicInteger poolNumber = new AtomicInteger(1);
final ThreadGroup group;
final AtomicInteger threadNumber = new AtomicInteger(1);
final String namePrefix;
DaemonThreadFactory() {
SecurityManager s = System.getSecurityManager();
group = (s != null)? s.getThreadGroup() :
Thread.currentThread().getThreadGroup();
namePrefix = "jaxws-engine-" +
poolNumber.getAndIncrement() +
"-thread-";
}
public Thread newThread(Runnable r) {
Thread t = new Thread(group, r,
namePrefix + threadNumber.getAndIncrement(),
0);
if (!t.isDaemon())
t.setDaemon(true);
if (t.getPriority() != Thread.NORM_PRIORITY)
t.setPriority(Thread.NORM_PRIORITY);
return t;
}
}
}