113 lines
3.8 KiB
Java
113 lines
3.8 KiB
Java
/*
|
|
* Copyright (c) 2003, 2015, 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 4956978
|
|
* @summary The capability is disabled regardless of number of times
|
|
* it was enabled.
|
|
* @author Mandy Chung
|
|
*/
|
|
|
|
import java.lang.management.ThreadMXBean;
|
|
import java.lang.management.ManagementFactory;
|
|
|
|
public class DisableTest {
|
|
private static ThreadMXBean tm = ManagementFactory.getThreadMXBean();
|
|
|
|
public static void main(String args[]) throws Exception {
|
|
try {
|
|
testThreadContentionMonitoring();
|
|
testThreadCpuMonitoring();
|
|
} finally {
|
|
// restore the default
|
|
if (tm.isThreadContentionMonitoringSupported()) {
|
|
tm.setThreadContentionMonitoringEnabled(false);
|
|
}
|
|
if (tm.isThreadCpuTimeSupported()) {
|
|
tm.setThreadCpuTimeEnabled(false);
|
|
}
|
|
}
|
|
|
|
System.out.println("Test passed.");
|
|
}
|
|
|
|
private static void testThreadContentionMonitoring()
|
|
throws Exception {
|
|
if (!tm.isThreadContentionMonitoringSupported()) {
|
|
System.out.println("JVM does not supports thread contention monitoring");
|
|
return;
|
|
}
|
|
|
|
// Default is false.
|
|
tm.setThreadContentionMonitoringEnabled(false);
|
|
tm.setThreadContentionMonitoringEnabled(false);
|
|
|
|
// check if disabled
|
|
if (tm.isThreadContentionMonitoringEnabled()) {
|
|
throw new RuntimeException("TEST FAILED: " +
|
|
"Expected thread contention monitoring to be disabled");
|
|
}
|
|
|
|
tm.setThreadContentionMonitoringEnabled(true);
|
|
// check if enabled
|
|
if (!tm.isThreadContentionMonitoringEnabled()) {
|
|
throw new RuntimeException("TEST FAILED: " +
|
|
"Expected thread contention monitoring to be enabled");
|
|
}
|
|
}
|
|
|
|
private static void testThreadCpuMonitoring()
|
|
throws Exception {
|
|
if (!tm.isThreadCpuTimeSupported()) {
|
|
System.out.println("JVM does not support thread CPU time monitoring");
|
|
return;
|
|
}
|
|
|
|
if (tm.isThreadCpuTimeEnabled()) {
|
|
tm.setThreadCpuTimeEnabled(false);
|
|
}
|
|
|
|
// check if disabled
|
|
if (tm.isThreadCpuTimeEnabled()) {
|
|
throw new RuntimeException("TEST FAILED: " +
|
|
"Expected thread CPU time monitoring to be disabled");
|
|
}
|
|
|
|
tm.setThreadCpuTimeEnabled(false);
|
|
tm.setThreadCpuTimeEnabled(false);
|
|
|
|
if (tm.isThreadCpuTimeEnabled()) {
|
|
throw new RuntimeException("TEST FAILED: " +
|
|
"Expected thread CPU time monitoring to be disabled");
|
|
}
|
|
|
|
tm.setThreadCpuTimeEnabled(true);
|
|
if (!tm.isThreadCpuTimeEnabled()) {
|
|
throw new RuntimeException("TEST FAILED: " +
|
|
"Expected thread CPU time monitoring to be disabled");
|
|
}
|
|
}
|
|
|
|
}
|