103 lines
3.5 KiB
Java
103 lines
3.5 KiB
Java
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/*
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* Copyright 2003-2004 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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/*
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* @test
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* @bug 4956978
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* @summary The capability is disabled regardless of number of times
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* it was enabled.
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* @author Mandy Chung
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*/
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import java.lang.management.ThreadMXBean;
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import java.lang.management.ManagementFactory;
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public class DisableTest {
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private static ThreadMXBean tm = ManagementFactory.getThreadMXBean();
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public static void main(String args[]) throws Exception {
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testThreadContentionMonitoring();
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testThreadCpuMonitoring();
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System.out.println("Test passed.");
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}
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private static void testThreadContentionMonitoring()
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throws Exception {
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if (!tm.isThreadContentionMonitoringSupported()) {
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System.out.println("JVM does not supports thread contention monitoring");
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return;
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}
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// Default is false.
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tm.setThreadContentionMonitoringEnabled(false);
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tm.setThreadContentionMonitoringEnabled(false);
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// check if disabled
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if (tm.isThreadContentionMonitoringEnabled()) {
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throw new RuntimeException("TEST FAILED: " +
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"Expected thread contention monitoring to be disabled");
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}
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tm.setThreadContentionMonitoringEnabled(true);
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// check if enabled
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if (!tm.isThreadContentionMonitoringEnabled()) {
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throw new RuntimeException("TEST FAILED: " +
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"Expected thread contention monitoring to be enabled");
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}
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}
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private static void testThreadCpuMonitoring()
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throws Exception {
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if (!tm.isThreadCpuTimeSupported()) {
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System.out.println("JVM does not support thread CPU time monitoring");
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return;
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}
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if (tm.isThreadCpuTimeEnabled()) {
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tm.setThreadCpuTimeEnabled(false);
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}
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// check if disabled
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if (tm.isThreadCpuTimeEnabled()) {
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throw new RuntimeException("TEST FAILED: " +
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"Expected thread CPU time monitoring to be disabled");
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}
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tm.setThreadCpuTimeEnabled(false);
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tm.setThreadCpuTimeEnabled(false);
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if (tm.isThreadCpuTimeEnabled()) {
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throw new RuntimeException("TEST FAILED: " +
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"Expected thread CPU time monitoring to be disabled");
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}
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tm.setThreadCpuTimeEnabled(true);
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if (!tm.isThreadCpuTimeEnabled()) {
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throw new RuntimeException("TEST FAILED: " +
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"Expected thread CPU time monitoring to be disabled");
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}
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}
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}
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