Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: test/serviceability/sa/jmap-hprof/JMapHProfLargeHeapProc.java
test/serviceability/sa/jmap-hprof/JMapHProfLargeHeapProc.java
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| 1 /* | |
| 2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 */ | |
| 23 | |
| 24 import java.lang.management.ManagementFactory; | |
| 25 import java.lang.management.RuntimeMXBean; | |
| 26 import java.lang.reflect.Field; | |
| 27 import java.lang.reflect.Method; | |
| 28 import java.util.ArrayList; | |
| 29 import java.util.List; | |
| 30 | |
| 31 import sun.management.VMManagement; | |
| 32 | |
| 33 public class JMapHProfLargeHeapProc { | |
| 34 private static final List<byte[]> heapGarbage = new ArrayList<>(); | |
| 35 | |
| 36 public static void main(String[] args) throws Exception { | |
| 37 | |
| 38 buildLargeHeap(args); | |
| 39 | |
| 40 // Print our pid on stdout | |
| 41 System.out.println("PID[" + getProcessId() + "]"); | |
| 42 | |
| 43 // Wait for input before termination | |
| 44 System.in.read(); | |
| 45 } | |
| 46 | |
| 47 private static void buildLargeHeap(String[] args) { | |
| 48 for (long i = 0; i < Integer.parseInt(args[0]); i++) { | |
| 49 heapGarbage.add(new byte[1024]); | |
| 50 } | |
| 51 } | |
| 52 | |
| 53 public static int getProcessId() throws Exception { | |
| 54 | |
| 55 // Get the current process id using a reflection hack | |
| 56 RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean(); | |
| 57 Field jvm = runtime.getClass().getDeclaredField("jvm"); | |
| 58 | |
| 59 jvm.setAccessible(true); | |
| 60 VMManagement mgmt = (sun.management.VMManagement) jvm.get(runtime); | |
| 61 | |
| 62 Method pid_method = mgmt.getClass().getDeclaredMethod("getProcessId"); | |
| 63 | |
| 64 pid_method.setAccessible(true); | |
| 65 | |
| 66 int pid = (Integer) pid_method.invoke(mgmt); | |
| 67 | |
| 68 return pid; | |
| 69 } | |
| 70 | |
| 71 } |
