You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
127 lines
3.6 KiB
127 lines
3.6 KiB
/*
|
|
* Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
|
|
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
|
|
*/
|
|
/*
|
|
* Copyright 1999-2004 The Apache Software Foundation.
|
|
*
|
|
* 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.
|
|
*/
|
|
/*
|
|
* $Id: ThreadControllerWrapper.java,v 1.2.4.1 2005/09/15 08:15:59 suresh_emailid Exp $
|
|
*/
|
|
package com.sun.org.apache.xml.internal.utils;
|
|
|
|
/**
|
|
* A utility class that wraps the ThreadController, which is used
|
|
* by IncrementalSAXSource for the incremental building of DTM.
|
|
*/
|
|
public class ThreadControllerWrapper
|
|
{
|
|
|
|
/** The ThreadController pool */
|
|
private static ThreadController m_tpool = new ThreadController();
|
|
|
|
public static Thread runThread(Runnable runnable, int priority)
|
|
{
|
|
return m_tpool.run(runnable, priority);
|
|
}
|
|
|
|
public static void waitThread(Thread worker, Runnable task)
|
|
throws InterruptedException
|
|
{
|
|
m_tpool.waitThread(worker, task);
|
|
}
|
|
|
|
/**
|
|
* Thread controller utility class for incremental SAX source. Must
|
|
* be overriden with a derived class to support thread pooling.
|
|
*
|
|
* All thread-related stuff is in this class.
|
|
*/
|
|
public static class ThreadController
|
|
{
|
|
|
|
/**
|
|
* This class was introduced as a fix for CR 6607339.
|
|
*/
|
|
final class SafeThread extends Thread {
|
|
private volatile boolean ran = false;
|
|
|
|
public SafeThread(Runnable target) {
|
|
super(target);
|
|
}
|
|
|
|
public final void run() {
|
|
if (Thread.currentThread() != this) {
|
|
throw new IllegalStateException("The run() method in a"
|
|
+ " SafeThread cannot be called from another thread.");
|
|
}
|
|
synchronized (this) {
|
|
if (!ran) {
|
|
ran = true;
|
|
}
|
|
else {
|
|
throw new IllegalStateException("The run() method in a"
|
|
+ " SafeThread cannot be called more than once.");
|
|
}
|
|
}
|
|
super.run();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Will get a thread from the pool, execute the task
|
|
* and return the thread to the pool.
|
|
*
|
|
* The return value is used only to wait for completion
|
|
*
|
|
*
|
|
* NEEDSDOC @param task
|
|
* @param priority if >0 the task will run with the given priority
|
|
* ( doesn't seem to be used in xalan, since it's allways the default )
|
|
* @return The thread that is running the task, can be used
|
|
* to wait for completion
|
|
*/
|
|
public Thread run(Runnable task, int priority)
|
|
{
|
|
|
|
Thread t = new SafeThread(task);
|
|
|
|
t.start();
|
|
|
|
// if( priority > 0 )
|
|
// t.setPriority( priority );
|
|
return t;
|
|
}
|
|
|
|
/**
|
|
* Wait until the task is completed on the worker
|
|
* thread.
|
|
*
|
|
* NEEDSDOC @param worker
|
|
* NEEDSDOC @param task
|
|
*
|
|
* @throws InterruptedException
|
|
*/
|
|
public void waitThread(Thread worker, Runnable task)
|
|
throws InterruptedException
|
|
{
|
|
|
|
// This should wait until the transformThread is considered not alive.
|
|
worker.join();
|
|
}
|
|
}
|
|
|
|
}
|