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test/serviceability/sa/jmap-hprof/JMapHProfLargeHeapProc.java@8ef918538e22 (annotated)

test/serviceability/sa/jmap-hprof/JMapHProfLargeHeapProc.java

Fri, 04 Oct 2013 13:44:49 +0200

author

sla

date

Fri, 04 Oct 2013 13:44:49 +0200

changeset 5845

8ef918538e22

parent 0

f90c822e73f8

permissions

-rw-r--r--

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

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