Mercurial > jdk8-mips64-public > hotspot / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/test/runtime/7196045/Test7196045.java	Wed Sep 19 15:24:32 2012 +0100
     1.3 @@ -0,0 +1,78 @@
     1.4 +/*
     1.5 + * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
     1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.7 + *
     1.8 + * This code is free software; you can redistribute it and/or modify it
     1.9 + * under the terms of the GNU General Public License version 2 only, as
    1.10 + * published by the Free Software Foundation.
    1.11 + *
    1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.15 + * version 2 for more details (a copy is included in the LICENSE file that
    1.16 + * accompanied this code).
    1.17 + *
    1.18 + * You should have received a copy of the GNU General Public License version
    1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.21 + *
    1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    1.23 + * or visit www.oracle.com if you need additional information or have any
    1.24 + * questions.
    1.25 + *
    1.26 + */
    1.27 +
    1.28 +/*
    1.29 + * @test
    1.30 + * @bug 7196045
    1.31 + * @summary Possible JVM deadlock in ThreadTimesClosure when using HotspotInternal non-public API.
    1.32 + * @run main/othervm
    1.33 + */
    1.34 +
    1.35 +import java.lang.management.ManagementFactory;
    1.36 +import javax.management.JMException;
    1.37 +import javax.management.MBeanServer;
    1.38 +import javax.management.MalformedObjectNameException;
    1.39 +import javax.management.ObjectName;
    1.40 +
    1.41 +public class Test7196045 {
    1.42 +
    1.43 +    public static long duration = 1000 * 60 * 2;
    1.44 +    private static final String HOTSPOT_INTERNAL = "sun.management:type=HotspotInternal";
    1.45 +
    1.46 +    public static void main(String[] args) {
    1.47 +
    1.48 +        MBeanServer server = ManagementFactory.getPlatformMBeanServer();
    1.49 +        ObjectName objName= null;
    1.50 +        try {
    1.51 +            ObjectName hotspotInternal = new ObjectName(HOTSPOT_INTERNAL);
    1.52 +            try {
    1.53 +                server.registerMBean(new sun.management.HotspotInternal(), hotspotInternal);
    1.54 +            } catch (JMException e) {
    1.55 +                throw new RuntimeException("HotSpotWatcher: Failed to register the HotspotInternal MBean" + e);
    1.56 +            }
    1.57 +            objName= new ObjectName("sun.management:type=HotspotThreading");
    1.58 +
    1.59 +        } catch (MalformedObjectNameException e1) {
    1.60 +            throw new RuntimeException("Bad object name" + e1);
    1.61 +        }
    1.62 +
    1.63 +        long endTime = System.currentTimeMillis() + duration;
    1.64 +        long i = 0;
    1.65 +        while (true) {
    1.66 +            try {
    1.67 +                server.getAttribute(objName, "InternalThreadCpuTimes");
    1.68 +            } catch (Exception ex) {
    1.69 +                System.err.println("Exception while getting attribute: " + ex);
    1.70 +            }
    1.71 +            i++;
    1.72 +            if (i % 10000 == 0) {
    1.73 +                System.out.println("Successful iterations: " + i);
    1.74 +            }
    1.75 +            if (System.currentTimeMillis() > endTime) {
    1.76 +                break;
    1.77 +            }
    1.78 +        }
    1.79 +        System.out.println("PASSED.");
    1.80 +    }
    1.81 +}