0N/A/*
3261N/A * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
0N/A * published by the Free Software Foundation.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/A
0N/A/*
0N/A * @test
0N/A * @bug 4956978
0N/A * @summary The capability is disabled regardless of number of times
0N/A * it was enabled.
0N/A * @author Mandy Chung
0N/A */
0N/A
0N/Aimport java.lang.management.ThreadMXBean;
0N/Aimport java.lang.management.ManagementFactory;
0N/A
0N/Apublic class DisableTest {
0N/A private static ThreadMXBean tm = ManagementFactory.getThreadMXBean();
0N/A
0N/A public static void main(String args[]) throws Exception {
2495N/A try {
2495N/A testThreadContentionMonitoring();
2495N/A testThreadCpuMonitoring();
2495N/A } finally {
2495N/A // restore the default
2495N/A if (tm.isThreadContentionMonitoringSupported()) {
2495N/A tm.setThreadContentionMonitoringEnabled(false);
2495N/A }
2495N/A if (tm.isThreadCpuTimeSupported()) {
2495N/A tm.setThreadCpuTimeEnabled(false);
2495N/A }
2495N/A }
0N/A
0N/A System.out.println("Test passed.");
0N/A }
0N/A
0N/A private static void testThreadContentionMonitoring()
0N/A throws Exception {
0N/A if (!tm.isThreadContentionMonitoringSupported()) {
0N/A System.out.println("JVM does not supports thread contention monitoring");
0N/A return;
0N/A }
0N/A
0N/A // Default is false.
0N/A tm.setThreadContentionMonitoringEnabled(false);
0N/A tm.setThreadContentionMonitoringEnabled(false);
0N/A
0N/A // check if disabled
0N/A if (tm.isThreadContentionMonitoringEnabled()) {
0N/A throw new RuntimeException("TEST FAILED: " +
0N/A "Expected thread contention monitoring to be disabled");
0N/A }
0N/A
0N/A tm.setThreadContentionMonitoringEnabled(true);
0N/A // check if enabled
0N/A if (!tm.isThreadContentionMonitoringEnabled()) {
0N/A throw new RuntimeException("TEST FAILED: " +
0N/A "Expected thread contention monitoring to be enabled");
0N/A }
0N/A }
0N/A
0N/A private static void testThreadCpuMonitoring()
0N/A throws Exception {
0N/A if (!tm.isThreadCpuTimeSupported()) {
0N/A System.out.println("JVM does not support thread CPU time monitoring");
0N/A return;
0N/A }
0N/A
0N/A if (tm.isThreadCpuTimeEnabled()) {
0N/A tm.setThreadCpuTimeEnabled(false);
0N/A }
0N/A
0N/A // check if disabled
0N/A if (tm.isThreadCpuTimeEnabled()) {
0N/A throw new RuntimeException("TEST FAILED: " +
0N/A "Expected thread CPU time monitoring to be disabled");
0N/A }
0N/A
0N/A tm.setThreadCpuTimeEnabled(false);
0N/A tm.setThreadCpuTimeEnabled(false);
0N/A
0N/A if (tm.isThreadCpuTimeEnabled()) {
0N/A throw new RuntimeException("TEST FAILED: " +
0N/A "Expected thread CPU time monitoring to be disabled");
0N/A }
0N/A
0N/A tm.setThreadCpuTimeEnabled(true);
0N/A if (!tm.isThreadCpuTimeEnabled()) {
0N/A throw new RuntimeException("TEST FAILED: " +
0N/A "Expected thread CPU time monitoring to be disabled");
0N/A }
0N/A }
0N/A
0N/A}