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comparison test/gc/arguments/TestG1HeapRegionSize.java @ 11978:dae8324fc7d1

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8021879: G1: G1HeapRegionSize flag value not updated correctly Reviewed-by: tschatzl, jmasa
author brutisso
date Thu, 01 Aug 2013 09:35:04 +0200
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11977:313227279a05 11978:dae8324fc7d1
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 /*
25 * @test TestG1HeapRegionSize
26 * @key gc
27 * @bug 8021879
28 * @summary Verify that the flag G1HeapRegionSize is updated properly
29 * @run main/othervm -Xmx64m TestG1HeapRegionSize 1048576
30 * @run main/othervm -XX:G1HeapRegionSize=2m -Xmx64m TestG1HeapRegionSize 2097152
31 * @run main/othervm -XX:G1HeapRegionSize=3m -Xmx64m TestG1HeapRegionSize 2097152
32 * @run main/othervm -XX:G1HeapRegionSize=64m -Xmx256m TestG1HeapRegionSize 33554432
33 */
34
35 import sun.management.ManagementFactoryHelper;
36 import com.sun.management.HotSpotDiagnosticMXBean;
37 import com.sun.management.VMOption;
38
39 public class TestG1HeapRegionSize {
40
41 public static void main(String[] args) {
42 HotSpotDiagnosticMXBean diagnostic = ManagementFactoryHelper.getDiagnosticMXBean();
43
44 VMOption option = diagnostic.getVMOption("UseG1GC");
45 if (option.getValue().equals("false")) {
46 System.out.println("Skipping this test. It is only a G1 test.");
47 return;
48 }
49
50 String expectedValue = getExpectedValue(args);
51 option = diagnostic.getVMOption("G1HeapRegionSize");
52 if (!expectedValue.equals(option.getValue())) {
53 throw new RuntimeException("Wrong value for G1HeapRegionSize. Expected " + expectedValue + " but got " + option.getValue());
54 }
55 }
56
57 private static String getExpectedValue(String[] args) {
58 if (args.length != 1) {
59 throw new RuntimeException("Wrong number of arguments. Expected 1 but got " + args.length);
60 }
61 return args[0];
62 }
63
64 }