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changeset 11992:d02de8cac823

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Merge
author ctornqvi
date Fri, 02 Aug 2013 22:34:43 +0200
parents dee4c330acd4 (current diff) 0f209afdfcf8 (diff)
children e0379d5ba5d2
files test/runtime/7196045/Test7196045.java
diffstat 2 files changed, 92 insertions(+), 78 deletions(-) [+]
line wrap: on
line diff
--- a/test/runtime/7196045/Test7196045.java	Fri Aug 02 08:32:05 2013 -0700
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,78 +0,0 @@
-/*
- * Copyright (c) 2012, 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 7196045
- * @summary Possible JVM deadlock in ThreadTimesClosure when using HotspotInternal non-public API.
- * @run main/othervm -XX:+UsePerfData Test7196045
- */
-
-import java.lang.management.ManagementFactory;
-import javax.management.JMException;
-import javax.management.MBeanServer;
-import javax.management.MalformedObjectNameException;
-import javax.management.ObjectName;
-
-public class Test7196045 {
-
-    public static long duration = 1000 * 60 * 2;
-    private static final String HOTSPOT_INTERNAL = "sun.management:type=HotspotInternal";
-
-    public static void main(String[] args) {
-
-        MBeanServer server = ManagementFactory.getPlatformMBeanServer();
-        ObjectName objName= null;
-        try {
-            ObjectName hotspotInternal = new ObjectName(HOTSPOT_INTERNAL);
-            try {
-                server.registerMBean(new sun.management.HotspotInternal(), hotspotInternal);
-            } catch (JMException e) {
-                throw new RuntimeException("HotSpotWatcher: Failed to register the HotspotInternal MBean" + e);
-            }
-            objName= new ObjectName("sun.management:type=HotspotThreading");
-
-        } catch (MalformedObjectNameException e1) {
-            throw new RuntimeException("Bad object name" + e1);
-        }
-
-        long endTime = System.currentTimeMillis() + duration;
-        long i = 0;
-        while (true) {
-            try {
-                server.getAttribute(objName, "InternalThreadCpuTimes");
-            } catch (Exception ex) {
-                System.err.println("Exception while getting attribute: " + ex);
-            }
-            i++;
-            if (i % 10000 == 0) {
-                System.out.println("Successful iterations: " + i);
-            }
-            if (System.currentTimeMillis() > endTime) {
-                break;
-            }
-        }
-        System.out.println("PASSED.");
-    }
-}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/runtime/InternalApi/ThreadCpuTimesDeadlock.java	Fri Aug 02 22:34:43 2013 +0200
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2012, 2013, 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 7196045
+ * @bug 8014294
+ * @summary Possible JVM deadlock in ThreadTimesClosure when using HotspotInternal non-public API.
+ * @run main/othervm -XX:+UsePerfData -Xmx32m ThreadCpuTimesDeadlock
+ */
+
+import java.lang.management.ManagementFactory;
+import javax.management.JMException;
+import javax.management.MBeanServer;
+import javax.management.MalformedObjectNameException;
+import javax.management.ObjectName;
+
+public class ThreadCpuTimesDeadlock {
+
+    public static byte[] dummy;
+    public static long duration = 10 * 1000;
+    private static final String HOTSPOT_INTERNAL = "sun.management:type=HotspotInternal";
+
+    public static void main(String[] args) {
+
+        MBeanServer server = ManagementFactory.getPlatformMBeanServer();
+        ObjectName objName= null;
+        try {
+            ObjectName hotspotInternal = new ObjectName(HOTSPOT_INTERNAL);
+            try {
+                server.registerMBean(new sun.management.HotspotInternal(), hotspotInternal);
+            } catch (JMException e) {
+                throw new RuntimeException("HotSpotWatcher: Failed to register the HotspotInternal MBean" + e);
+            }
+            objName= new ObjectName("sun.management:type=HotspotThreading");
+
+        } catch (MalformedObjectNameException e1) {
+            throw new RuntimeException("Bad object name" + e1);
+        }
+
+        // Thread that allocs memory to generate GC's
+        Thread allocThread = new Thread() {
+          public void run() {
+            while (true) {
+              dummy = new byte[4096];
+            }
+          }
+        };
+
+        allocThread.setDaemon(true);
+        allocThread.start();
+
+        long endTime = System.currentTimeMillis() + duration;
+        long i = 0;
+        while (true) {
+            try {
+                server.getAttribute(objName, "InternalThreadCpuTimes");
+            } catch (Exception ex) {
+                System.err.println("Exception while getting attribute: " + ex);
+            }
+            i++;
+            if (i % 10000 == 0) {
+                System.out.println("Successful iterations: " + i);
+            }
+            if (System.currentTimeMillis() > endTime) {
+                break;
+            }
+        }
+        System.out.println("PASSED.");
+    }
+}