J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2004 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | * @test |
| 26 | * @bug 5058327 |
| 27 | * @summary Test if getThreadInfo(long[]) returns a ThreadInfo[] |
| 28 | * with null elements with no exception. |
| 29 | * |
| 30 | * @author Mandy Chung |
| 31 | * |
| 32 | * @build ThreadInfoArray |
| 33 | * @run main ThreadInfoArray |
| 34 | */ |
| 35 | |
| 36 | import java.lang.management.*; |
| 37 | import javax.management.*; |
| 38 | import java.util.*; |
| 39 | import static java.lang.management.ManagementFactory.*; |
| 40 | |
| 41 | public class ThreadInfoArray { |
| 42 | public static void main(String[] argv) throws Exception { |
| 43 | ThreadMXBean mbean = ManagementFactory.getThreadMXBean(); |
| 44 | |
| 45 | // ID for a new thread |
| 46 | long [] ids = {new Thread().getId()}; |
| 47 | ThreadInfo[] tinfos = mbean.getThreadInfo(ids); |
| 48 | |
| 49 | if (tinfos[0] != null) { |
| 50 | throw new RuntimeException("TEST FAILED: " + |
| 51 | "Expected to have a null element"); |
| 52 | } |
| 53 | |
| 54 | // call getThreadInfo through MBeanServer |
| 55 | MBeanServer mbs = ManagementFactory.getPlatformMBeanServer(); |
| 56 | ObjectName on = new ObjectName(THREAD_MXBEAN_NAME); |
| 57 | Object[] params = {ids}; |
| 58 | String[] sigs = {"[J"}; |
| 59 | Object[] result = (Object[]) mbs.invoke(on, "getThreadInfo", params, sigs); |
| 60 | |
| 61 | if (result[0] != null) { |
| 62 | throw new RuntimeException("TEST FAILED: " + |
| 63 | "Expected to have a null element via MBeanServer"); |
| 64 | } |
| 65 | |
| 66 | // call getThreadInfo through proxy |
| 67 | ThreadMXBean proxy = newPlatformMXBeanProxy(mbs, |
| 68 | on.toString(), |
| 69 | ThreadMXBean.class); |
| 70 | tinfos = proxy.getThreadInfo(ids); |
| 71 | if (tinfos[0] != null) { |
| 72 | throw new RuntimeException("TEST FAILED: " + |
| 73 | "Expected to have a null element"); |
| 74 | } |
| 75 | System.out.println("Test passed"); |
| 76 | } |
| 77 | } |