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/*
* Copyright 2014 Goldman Sachs.
* Copyright (c) 2014, 2018, 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.
*
* 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
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/* @test
* @bug 7142035
* @summary Assert in java.lang.instrument agents during shutdown when classloading occurs after shutdown
* @library /test/lib
*
* @modules java.instrument
* java.management
* @build DummyAgent DummyClass TestDaemonThreadLauncher TestDaemonThread
* @run shell ../MakeJAR3.sh DummyAgent
* @run main/timeout=240 TestDaemonThreadLauncher
*
*/
import java.io.File;
import java.net.URL;
import java.net.URLClassLoader;
public class TestDaemonThread implements Runnable{
File classpath;
public TestDaemonThread(File classpath) {
this.classpath = classpath;
}
@Override
public void run() {
try {
URL u = this.getClass().getClassLoader().getResource("DummyClass.class");
String path = u.getPath();
String parent = u.getPath().substring(0, path.lastIndexOf('/')+1);
URL parentURL = new URL(u, parent);
System.out.println(parentURL);
/* Load lots of class by creating multiple classloaders */
for(;;) {
ClassLoader cl = new URLClassLoader(new URL[] {parentURL}, null);
cl.loadClass("DummyClass");
}
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) throws Exception {
Thread t = new Thread(new TestDaemonThread(new File(args[0])));
/* The important part of the bug is that a Daemon thread can continue to load classes after shutdown */
t.setDaemon(true);
t.start();
Thread.sleep(200);
}
}
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