Mercurial > hg > graal-compiler
view test/serviceability/sa/jmap-hprof/JMapHProfLargeHeapProc.java @ 21773:0df7d7d6c25b
AMD64HotSpotMove: split HotSpotLoadConstantOp into HotSpotLoadObjectConstantOp and HotSpotLoadMetaspaceConstantOp.
author | Josef Eisl <josef.eisl@jku.at> |
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date | Mon, 01 Jun 2015 12:16:53 +0200 |
parents | 8ef918538e22 |
children |
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/* * 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; } }