author | kevinw |
Wed, 19 Sep 2012 15:24:32 +0100 | |
changeset 13870 | dd2c6a5a4722 |
child 13953 | a96fb2fe0c08 |
permissions | -rw-r--r-- |
13870
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/* |
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* Copyright (c) 2012, 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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|
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/* |
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* @test |
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* @bug 7196045 |
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* @summary Possible JVM deadlock in ThreadTimesClosure when using HotspotInternal non-public API. |
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* @run main/othervm |
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*/ |
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import java.lang.management.ManagementFactory; |
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import javax.management.JMException; |
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import javax.management.MBeanServer; |
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import javax.management.MalformedObjectNameException; |
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import javax.management.ObjectName; |
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public class Test7196045 { |
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public static long duration = 1000 * 60 * 2; |
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private static final String HOTSPOT_INTERNAL = "sun.management:type=HotspotInternal"; |
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public static void main(String[] args) { |
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MBeanServer server = ManagementFactory.getPlatformMBeanServer(); |
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ObjectName objName= null; |
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try { |
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ObjectName hotspotInternal = new ObjectName(HOTSPOT_INTERNAL); |
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try { |
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server.registerMBean(new sun.management.HotspotInternal(), hotspotInternal); |
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} catch (JMException e) { |
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throw new RuntimeException("HotSpotWatcher: Failed to register the HotspotInternal MBean" + e); |
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} |
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objName= new ObjectName("sun.management:type=HotspotThreading"); |
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} catch (MalformedObjectNameException e1) { |
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throw new RuntimeException("Bad object name" + e1); |
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} |
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long endTime = System.currentTimeMillis() + duration; |
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long i = 0; |
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while (true) { |
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try { |
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server.getAttribute(objName, "InternalThreadCpuTimes"); |
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} catch (Exception ex) { |
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System.err.println("Exception while getting attribute: " + ex); |
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} |
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i++; |
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if (i % 10000 == 0) { |
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System.out.println("Successful iterations: " + i); |
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} |
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if (System.currentTimeMillis() > endTime) { |
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break; |
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} |
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} |
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System.out.println("PASSED."); |
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} |
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} |