136 lines
5.1 KiB
Java
136 lines
5.1 KiB
Java
/*
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* Copyright (c) 2004, 2016, 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 5058327 8074368
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* @summary Tests the correct behaviour of getThreadInfo(long[]) for non-existent
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* thread IDs and the empty thread id array.
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*
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* @author Mandy Chung
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* @author Jaroslav Bachorik
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*
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* @modules jdk.management
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* @build ThreadInfoArray
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* @run main ThreadInfoArray
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*/
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import java.lang.management.*;
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import javax.management.*;
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import static java.lang.management.ManagementFactory.*;
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public class ThreadInfoArray {
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public static void main(String[] argv) throws Exception {
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MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
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ObjectName on = new ObjectName(THREAD_MXBEAN_NAME);
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ThreadMXBean mbean = ManagementFactory.getThreadMXBean();
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ThreadMXBean proxy = newPlatformMXBeanProxy(mbs,
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on.toString(),
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ThreadMXBean.class);
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checkNullElement(mbean, proxy, mbs, on);
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checkEmptyArray(mbean, proxy, mbs, on);
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System.out.println("Test passed");
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}
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private static void checkNullElement(ThreadMXBean mbean, ThreadMXBean proxy,
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MBeanServer mbs, ObjectName on)
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throws Exception {
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System.out.println("--- Check null element");
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// ID for a new thread
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long [] ids = {new Thread().getId()};
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// direct call
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ThreadInfo[] tinfos = mbean.getThreadInfo(ids);
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if (tinfos[0] != null) {
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throw new RuntimeException("TEST FAILED: " +
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"Expected to have a null element");
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}
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// call getThreadInfo through MBeanServer
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Object[] params = {ids};
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String[] sigs = {"[J"};
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Object[] result = (Object[]) mbs.invoke(on, "getThreadInfo", params, sigs);
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if (result[0] != null) {
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throw new RuntimeException("TEST FAILED: " +
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"Expected to have a null element via MBeanServer");
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}
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// call getThreadInfo through proxy
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tinfos = proxy.getThreadInfo(ids);
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if (tinfos[0] != null) {
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throw new RuntimeException("TEST FAILED: " +
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"Expected to have a null element");
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}
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System.out.println("--- PASSED");
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}
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private static void checkEmptyArray(ThreadMXBean mbean, ThreadMXBean proxy,
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MBeanServer mbs, ObjectName on)
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throws Exception {
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System.out.println("--- Check empty TID array");
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long[] ids = new long[0];
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// direct call
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assertEmptyArray(mbean.getThreadInfo(ids), "Expected empty ThreadInfo array");
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assertEmptyArray(mbean.getThreadInfo(ids, 1), "Expected empty ThreadInfo array");
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assertEmptyArray(mbean.getThreadInfo(ids, true, true), "Expected empty ThreadInfo array");
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// call getThreadInfo through MBeanServer
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assertEmptyArray(
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(Object[]) mbs.invoke(
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on, "getThreadInfo", new Object[]{ids}, new String[]{"[J"}
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),
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"Expected empty ThreadInfo array via MBeanServer"
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);
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assertEmptyArray(
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(Object[]) mbs.invoke(
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on, "getThreadInfo", new Object[]{ids, 1},
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new String[]{"[J", "int"}
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),
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"Expected empty ThreadInfo array via MBeanServer"
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);
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assertEmptyArray(
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(Object[]) mbs.invoke(
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on, "getThreadInfo", new Object[]{ids, true, true},
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new String[]{"[J", "boolean", "boolean"}
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),
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"Expected empty ThreadInfo array via MBeanServer"
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);
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// call getThreadInfo through proxy
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assertEmptyArray(proxy.getThreadInfo(ids), "Expected empty ThreadInfo array");
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assertEmptyArray(proxy.getThreadInfo(ids, 1), "Expected empty ThreadInfo array");
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assertEmptyArray(proxy.getThreadInfo(ids, true, true), "Expected empty ThreadInfo array");
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System.out.println("--- PASSED");
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}
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private static void assertEmptyArray(Object[] arr, String message) throws Exception {
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if (arr.length > 0) {
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throw new RuntimeException("TEST FAILED: " + message);
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}
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}
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}
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