diff test/serviceability/sa/jmap-hprof/JMapHProfLargeHeapProc.java @ 12820:8ef918538e22

6313383: SA: Update jmap to support HPROF binary format "JAVA PROFILE 1.0.2" Summary: Adds support for large(>4G) heap dumps in hprof format. Adds tests and updates testlibrary. Reviewed-by: sla, allwin Contributed-by: fredrik.arvidsson@oracle.com
author sla
date Fri, 04 Oct 2013 13:44:49 +0200
parents
children
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/serviceability/sa/jmap-hprof/JMapHProfLargeHeapProc.java	Fri Oct 04 13:44:49 2013 +0200
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 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.
+ */
+
+import java.lang.management.ManagementFactory;
+import java.lang.management.RuntimeMXBean;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.List;
+
+import sun.management.VMManagement;
+
+public class JMapHProfLargeHeapProc {
+    private static final List<byte[]> heapGarbage = new ArrayList<>();
+
+    public static void main(String[] args) throws Exception {
+
+        buildLargeHeap(args);
+
+        // Print our pid on stdout
+        System.out.println("PID[" + getProcessId() + "]");
+
+        // Wait for input before termination
+        System.in.read();
+    }
+
+    private static void buildLargeHeap(String[] args) {
+        for (long i = 0; i < Integer.parseInt(args[0]); i++) {
+            heapGarbage.add(new byte[1024]);
+        }
+    }
+
+    public static int getProcessId() throws Exception {
+
+        // Get the current process id using a reflection hack
+        RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
+        Field jvm = runtime.getClass().getDeclaredField("jvm");
+
+        jvm.setAccessible(true);
+        VMManagement mgmt = (sun.management.VMManagement) jvm.get(runtime);
+
+        Method pid_method = mgmt.getClass().getDeclaredMethod("getProcessId");
+
+        pid_method.setAccessible(true);
+
+        int pid = (Integer) pid_method.invoke(mgmt);
+
+        return pid;
+    }
+
+}