| /* |
| * Copyright (c) 2004, 2016, 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 8074368 |
| * @summary Tests the correct behaviour of getThreadInfo(long[]) for non-existent |
| * thread IDs and the empty thread id array. |
| * |
| * @author Mandy Chung |
| * @author Jaroslav Bachorik |
| * |
| * @modules jdk.management |
| * @build ThreadInfoArray |
| * @run main ThreadInfoArray |
| */ |
| |
| import java.lang.management.*; |
| import javax.management.*; |
| import static java.lang.management.ManagementFactory.*; |
| |
| public class ThreadInfoArray { |
| public static void main(String[] argv) throws Exception { |
| MBeanServer mbs = ManagementFactory.getPlatformMBeanServer(); |
| ObjectName on = new ObjectName(THREAD_MXBEAN_NAME); |
| |
| ThreadMXBean mbean = ManagementFactory.getThreadMXBean(); |
| ThreadMXBean proxy = newPlatformMXBeanProxy(mbs, |
| on.toString(), |
| ThreadMXBean.class); |
| |
| checkNullElement(mbean, proxy, mbs, on); |
| checkEmptyArray(mbean, proxy, mbs, on); |
| System.out.println("Test passed"); |
| } |
| |
| private static void checkNullElement(ThreadMXBean mbean, ThreadMXBean proxy, |
| MBeanServer mbs, ObjectName on) |
| throws Exception { |
| System.out.println("--- Check null element"); |
| // ID for a new thread |
| long [] ids = {new Thread().getId()}; |
| // direct call |
| ThreadInfo[] tinfos = mbean.getThreadInfo(ids); |
| |
| if (tinfos[0] != null) { |
| throw new RuntimeException("TEST FAILED: " + |
| "Expected to have a null element"); |
| } |
| |
| // call getThreadInfo through MBeanServer |
| 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 |
| tinfos = proxy.getThreadInfo(ids); |
| if (tinfos[0] != null) { |
| throw new RuntimeException("TEST FAILED: " + |
| "Expected to have a null element"); |
| } |
| System.out.println("--- PASSED"); |
| } |
| |
| private static void checkEmptyArray(ThreadMXBean mbean, ThreadMXBean proxy, |
| MBeanServer mbs, ObjectName on) |
| throws Exception { |
| System.out.println("--- Check empty TID array"); |
| |
| long[] ids = new long[0]; |
| // direct call |
| assertEmptyArray(mbean.getThreadInfo(ids), "Expected empty ThreadInfo array"); |
| assertEmptyArray(mbean.getThreadInfo(ids, 1), "Expected empty ThreadInfo array"); |
| assertEmptyArray(mbean.getThreadInfo(ids, true, true), "Expected empty ThreadInfo array"); |
| |
| // call getThreadInfo through MBeanServer |
| assertEmptyArray( |
| (Object[]) mbs.invoke( |
| on, "getThreadInfo", new Object[]{ids}, new String[]{"[J"} |
| ), |
| "Expected empty ThreadInfo array via MBeanServer" |
| ); |
| assertEmptyArray( |
| (Object[]) mbs.invoke( |
| on, "getThreadInfo", new Object[]{ids, 1}, |
| new String[]{"[J", "int"} |
| ), |
| "Expected empty ThreadInfo array via MBeanServer" |
| ); |
| assertEmptyArray( |
| (Object[]) mbs.invoke( |
| on, "getThreadInfo", new Object[]{ids, true, true}, |
| new String[]{"[J", "boolean", "boolean"} |
| ), |
| "Expected empty ThreadInfo array via MBeanServer" |
| ); |
| |
| // call getThreadInfo through proxy |
| assertEmptyArray(proxy.getThreadInfo(ids), "Expected empty ThreadInfo array"); |
| assertEmptyArray(proxy.getThreadInfo(ids, 1), "Expected empty ThreadInfo array"); |
| assertEmptyArray(proxy.getThreadInfo(ids, true, true), "Expected empty ThreadInfo array"); |
| System.out.println("--- PASSED"); |
| } |
| |
| private static void assertEmptyArray(Object[] arr, String message) throws Exception { |
| if (arr.length > 0) { |
| throw new RuntimeException("TEST FAILED: " + message); |
| } |
| } |
| } |