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comparison test/gc/metaspace/TestMetaspaceSizeFlags.java @ 12238:9e11762cee52

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8024650: Don't adjust MaxMetaspaceSize up to MetaspaceSize Reviewed-by: jwilhelm, brutisso, tschatzl
author stefank
date Fri, 13 Sep 2013 22:22:14 +0200
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12237:335b388c4b28 12238:9e11762cee52
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 com.oracle.java.testlibrary.Asserts;
25 import com.oracle.java.testlibrary.OutputAnalyzer;
26 import com.oracle.java.testlibrary.ProcessTools;
27
28 /*
29 * @test TestMetaspaceSizeFlags
30 * @key gc
31 * @bug 8024650
32 * @summary Test that metaspace size flags can be set correctly
33 * @library /testlibrary
34 */
35 public class TestMetaspaceSizeFlags {
36 public static final long K = 1024L;
37 public static final long M = 1024L * K;
38
39 // HotSpot uses a number of different values to align memory size flags.
40 // This is currently the largest alignment (unless huge large pages are used).
41 public static final long MAX_ALIGNMENT = 32 * M;
42
43 public static void main(String [] args) throws Exception {
44 testMaxMetaspaceSizeEQMetaspaceSize(MAX_ALIGNMENT, MAX_ALIGNMENT);
45 // 8024650: MaxMetaspaceSize was adjusted instead of MetaspaceSize.
46 testMaxMetaspaceSizeLTMetaspaceSize(MAX_ALIGNMENT, MAX_ALIGNMENT * 2);
47 testMaxMetaspaceSizeGTMetaspaceSize(MAX_ALIGNMENT * 2, MAX_ALIGNMENT);
48 testTooSmallInitialMetaspace(0, 0);
49 testTooSmallInitialMetaspace(0, MAX_ALIGNMENT);
50 testTooSmallInitialMetaspace(MAX_ALIGNMENT, 0);
51 }
52
53 private static void testMaxMetaspaceSizeEQMetaspaceSize(long maxMetaspaceSize, long metaspaceSize) throws Exception {
54 MetaspaceFlags mf = runAndGetValue(maxMetaspaceSize, metaspaceSize);
55 Asserts.assertEQ(maxMetaspaceSize, metaspaceSize);
56 Asserts.assertEQ(mf.maxMetaspaceSize, maxMetaspaceSize);
57 Asserts.assertEQ(mf.metaspaceSize, metaspaceSize);
58 }
59
60 private static void testMaxMetaspaceSizeLTMetaspaceSize(long maxMetaspaceSize, long metaspaceSize) throws Exception {
61 MetaspaceFlags mf = runAndGetValue(maxMetaspaceSize, metaspaceSize);
62 Asserts.assertEQ(mf.maxMetaspaceSize, maxMetaspaceSize);
63 Asserts.assertEQ(mf.metaspaceSize, maxMetaspaceSize);
64 }
65
66 private static void testMaxMetaspaceSizeGTMetaspaceSize(long maxMetaspaceSize, long metaspaceSize) throws Exception {
67 MetaspaceFlags mf = runAndGetValue(maxMetaspaceSize, metaspaceSize);
68 Asserts.assertGT(maxMetaspaceSize, metaspaceSize);
69 Asserts.assertGT(mf.maxMetaspaceSize, mf.metaspaceSize);
70 Asserts.assertEQ(mf.maxMetaspaceSize, maxMetaspaceSize);
71 Asserts.assertEQ(mf.metaspaceSize, metaspaceSize);
72 }
73
74 private static void testTooSmallInitialMetaspace(long maxMetaspaceSize, long metaspaceSize) throws Exception {
75 OutputAnalyzer output = run(maxMetaspaceSize, metaspaceSize);
76 output.shouldContain("Too small initial Metaspace size");
77 }
78
79 private static MetaspaceFlags runAndGetValue(long maxMetaspaceSize, long metaspaceSize) throws Exception {
80 OutputAnalyzer output = run(maxMetaspaceSize, metaspaceSize);
81 output.shouldNotMatch("Error occurred during initialization of VM\n.*");
82
83 String stringMaxMetaspaceSize = output.firstMatch(".* MaxMetaspaceSize .* := (\\d+).*", 1);
84 String stringMetaspaceSize = output.firstMatch(".* MetaspaceSize .* := (\\d+).*", 1);
85
86 return new MetaspaceFlags(Long.parseLong(stringMaxMetaspaceSize),
87 Long.parseLong(stringMetaspaceSize));
88 }
89
90 private static OutputAnalyzer run(long maxMetaspaceSize, long metaspaceSize) throws Exception {
91 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
92 "-XX:MaxMetaspaceSize=" + maxMetaspaceSize,
93 "-XX:MetaspaceSize=" + metaspaceSize,
94 "-XX:-UseLargePages", // Prevent us from using 2GB large pages on solaris + sparc.
95 "-XX:+PrintFlagsFinal",
96 "-version");
97 return new OutputAnalyzer(pb.start());
98 }
99
100 private static class MetaspaceFlags {
101 public long maxMetaspaceSize;
102 public long metaspaceSize;
103 public MetaspaceFlags(long maxMetaspaceSize, long metaspaceSize) {
104 this.maxMetaspaceSize = maxMetaspaceSize;
105 this.metaspaceSize = metaspaceSize;
106 }
107 }
108 }