147 lines
4.2 KiB
Java
147 lines
4.2 KiB
Java
/*
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* Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 4882798
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* @summary multi-thread test to exercise sync and contention for removes to transformer registry
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* @author Gabriel Adauto, Wily Technology
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*
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* @run build TransformerManagementThreadRemoveTests
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* @run shell MakeJAR.sh redefineAgent
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* @run main/othervm -javaagent:redefineAgent.jar TransformerManagementThreadRemoveTests TransformerManagementThreadRemoveTests
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*/
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import java.util.*;
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public class TransformerManagementThreadRemoveTests
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extends TransformerManagementThreadAddTests
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{
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/**
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* Constructor for TransformerManagementThreadRemoveTests.
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* @param name
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*/
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public TransformerManagementThreadRemoveTests(String name)
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{
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super(name);
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}
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public static void
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main (String[] args)
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throws Throwable {
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ATestCaseScaffold test = new TransformerManagementThreadRemoveTests(args[0]);
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test.runTest();
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}
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protected final void
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doRunTest()
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throws Throwable {
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testMultiThreadAddsAndRemoves();
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}
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public void
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testMultiThreadAddsAndRemoves()
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{
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int size = TOTAL_THREADS + REMOVE_THREADS;
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ArrayList threadList = new ArrayList(size);
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for (int i = MIN_TRANS; i <= MAX_TRANS; i++)
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{
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int index = i - MIN_TRANS;
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threadList.add(new TransformerThread("Trans"+prettyNum(index,2), i));
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}
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int factor = (int)Math.floor(TOTAL_THREADS / REMOVE_THREADS);
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for (int i = 0; i < REMOVE_THREADS; i++)
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{
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threadList.add(factor * i, new RemoveThread("Remove"+i));
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}
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Thread[] threads = (Thread[])threadList.toArray(new Thread[size]);
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setExecThread(new ExecuteTransformersThread());
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getExecThread().start();
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for (int i = threads.length - 1; i >= 0; i--)
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{
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threads[i].start();
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}
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while (!testCompleted())
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{
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// Effective Java - Item 51: Don't depend on the thread scheduler
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// Use sleep() instead of yield().
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try {
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Thread.sleep(500);
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} catch (InterruptedException ie) {
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}
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}
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assertTrue(finalCheck());
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//printTransformers();
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}
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/**
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* Method removeTransformer.
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*/
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private void
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removeTransformer(Thread t)
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{
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ThreadTransformer tt = null;
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synchronized (fAddedTransformers)
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{
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int size = fAddedTransformers.size();
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if (size > 0)
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{
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int choose = (int)Math.floor(Math.random() * size);
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tt = (ThreadTransformer)fAddedTransformers.remove(choose);
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}
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//System.out.println("removed("+tt+") size("+size+") chose("+choose+") by("+t+")");
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}
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if (tt != null)
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{
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getInstrumentation().removeTransformer(tt);
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}
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}
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private class
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RemoveThread
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extends Thread
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{
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RemoveThread(String name)
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{
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super(name);
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}
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public void
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run()
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{
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while (!threadsDone())
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{
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removeTransformer(RemoveThread.this);
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}
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}
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}
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}
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