Mercurial > jdk8-mips64-public > hotspot / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/test/serviceability/sa/jmap-hprof/JMapHProfLargeHeapProc.java	Fri Oct 04 13:44:49 2013 +0200
     1.3 @@ -0,0 +1,71 @@
     1.4 +/*
     1.5 + * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
     1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.7 + *
     1.8 + * This code is free software; you can redistribute it and/or modify it
     1.9 + * under the terms of the GNU General Public License version 2 only, as
    1.10 + * published by the Free Software Foundation.
    1.11 + *
    1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.15 + * version 2 for more details (a copy is included in the LICENSE file that
    1.16 + * accompanied this code).
    1.17 + *
    1.18 + * You should have received a copy of the GNU General Public License version
    1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.21 + *
    1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    1.23 + * or visit www.oracle.com if you need additional information or have any
    1.24 + * questions.
    1.25 + */
    1.26 +
    1.27 +import java.lang.management.ManagementFactory;
    1.28 +import java.lang.management.RuntimeMXBean;
    1.29 +import java.lang.reflect.Field;
    1.30 +import java.lang.reflect.Method;
    1.31 +import java.util.ArrayList;
    1.32 +import java.util.List;
    1.33 +
    1.34 +import sun.management.VMManagement;
    1.35 +
    1.36 +public class JMapHProfLargeHeapProc {
    1.37 +    private static final List<byte[]> heapGarbage = new ArrayList<>();
    1.38 +
    1.39 +    public static void main(String[] args) throws Exception {
    1.40 +
    1.41 +        buildLargeHeap(args);
    1.42 +
    1.43 +        // Print our pid on stdout
    1.44 +        System.out.println("PID[" + getProcessId() + "]");
    1.45 +
    1.46 +        // Wait for input before termination
    1.47 +        System.in.read();
    1.48 +    }
    1.49 +
    1.50 +    private static void buildLargeHeap(String[] args) {
    1.51 +        for (long i = 0; i < Integer.parseInt(args[0]); i++) {
    1.52 +            heapGarbage.add(new byte[1024]);
    1.53 +        }
    1.54 +    }
    1.55 +
    1.56 +    public static int getProcessId() throws Exception {
    1.57 +
    1.58 +        // Get the current process id using a reflection hack
    1.59 +        RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
    1.60 +        Field jvm = runtime.getClass().getDeclaredField("jvm");
    1.61 +
    1.62 +        jvm.setAccessible(true);
    1.63 +        VMManagement mgmt = (sun.management.VMManagement) jvm.get(runtime);
    1.64 +
    1.65 +        Method pid_method = mgmt.getClass().getDeclaredMethod("getProcessId");
    1.66 +
    1.67 +        pid_method.setAccessible(true);
    1.68 +
    1.69 +        int pid = (Integer) pid_method.invoke(mgmt);
    1.70 +
    1.71 +        return pid;
    1.72 +    }
    1.73 +
    1.74 +}