/*
* Copyright (c) 2004, 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 5058327
* @summary Test if getThreadInfo(long[]) returns a ThreadInfo[]
* with null elements with no exception.
*
* @author Mandy Chung
*
* @build ThreadInfoArray
* @run main ThreadInfoArray
*/
import java.lang.management.*;
import javax.management.*;
import java.util.*;
import static java.lang.management.ManagementFactory.*;
public class ThreadInfoArray {
public static void main(String[] argv) throws Exception {
ThreadMXBean mbean = ManagementFactory.getThreadMXBean();
// ID for a new thread
long [] ids = {new Thread().getId()};
ThreadInfo[] tinfos = mbean.getThreadInfo(ids);
if (tinfos[0] != null) {
throw new RuntimeException("TEST FAILED: " +
"Expected to have a null element");
}
// call getThreadInfo through MBeanServer
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
ObjectName on = new ObjectName(THREAD_MXBEAN_NAME);
Object[] params = {ids};
String[] sigs = {"[J"};
Object[] result = (Object[]) mbs.invoke(on, "getThreadInfo", params, sigs);
if (result[0] != null) {
throw new RuntimeException("TEST FAILED: " +
"Expected to have a null element via MBeanServer");
}
// call getThreadInfo through proxy
ThreadMXBean proxy = newPlatformMXBeanProxy(mbs,
on.toString(),
ThreadMXBean.class);
tinfos = proxy.getThreadInfo(ids);
if (tinfos[0] != null) {
throw new RuntimeException("TEST FAILED: " +
"Expected to have a null element");
}
System.out.println("Test passed");
}
}