1 /*
2 * Copyright (c) 2013, 2015, 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 TestMaxNewSize
26 * @key gc
27 * @bug 7057939
28 * @summary Make sure that MaxNewSize always has a useful value after argument
29 * processing.
30 * @library /testlibrary
31 * @modules java.base/jdk.internal.misc
32 * java.management
33 * @build TestMaxNewSize
34 * @run main TestMaxNewSize -XX:+UseSerialGC
35 * @run main TestMaxNewSize -XX:+UseParallelGC
36 * @run main TestMaxNewSize -XX:+UseConcMarkSweepGC
37 * @run main TestMaxNewSize -XX:+UseG1GC
38 * @author thomas.schatzl@oracle.com, jesper.wilhelmsson@oracle.com
39 */
40
41 import java.util.regex.Matcher;
42 import java.util.regex.Pattern;
43
44 import java.math.BigInteger;
45
46 import java.util.ArrayList;
47 import java.util.Arrays;
48
49 import jdk.test.lib.*;
50
51 public class TestMaxNewSize {
52
53 private static void checkMaxNewSize(String[] flags, int heapsize) throws Exception {
54 BigInteger actual = new BigInteger(getMaxNewSize(flags));
55 System.out.println(actual);
56 if (actual.compareTo(new BigInteger((new Long(heapsize)).toString())) == 1) {
57 throw new RuntimeException("MaxNewSize value set to \"" + actual +
58 "\", expected otherwise when running with the following flags: " + Arrays.asList(flags).toString());
59 }
60 }
61
62 private static void checkIncompatibleNewSize(String[] flags) throws Exception {
63 ArrayList<String> finalargs = new ArrayList<String>();
64 finalargs.addAll(Arrays.asList(flags));
65 finalargs.add("-version");
66
67 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(finalargs.toArray(new String[0]));
68 OutputAnalyzer output = new OutputAnalyzer(pb.start());
69 output.shouldContain("Initial young gen size set larger than the maximum young gen size");
70 }
71
72 private static boolean isRunningG1(String[] args) {
73 for (int i = 0; i < args.length; i++) {
74 if (args[i].contains("+UseG1GC")) {
75 return true;
76 }
77 }
78 return false;
79 }
80
81 private static String getMaxNewSize(String[] flags) throws Exception {
82 ArrayList<String> finalargs = new ArrayList<String>();
83 finalargs.addAll(Arrays.asList(flags));
84 if (isRunningG1(flags)) {
85 finalargs.add("-XX:G1HeapRegionSize=1M");
86 }
87 finalargs.add("-XX:+PrintFlagsFinal");
88 finalargs.add("-version");
89
90 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(finalargs.toArray(new String[0]));
91 OutputAnalyzer output = new OutputAnalyzer(pb.start());
92 output.shouldHaveExitValue(0);
93 String stdout = output.getStdout();
94 //System.out.println(stdout);
95 return getFlagValue("MaxNewSize", stdout);
96 }
97
98 private static String getFlagValue(String flag, String where) {
99 Matcher m = Pattern.compile(flag + "\\s+:?=\\s+\\d+").matcher(where);
100 if (!m.find()) {
101 throw new RuntimeException("Could not find value for flag " + flag + " in output string");
102 }
103 String match = m.group();
104 return match.substring(match.lastIndexOf(" ") + 1, match.length());
105 }
106
107 public static void main(String args[]) throws Exception {
108 String gcName = args[0];
109 final int M32 = 32 * 1024 * 1024;
110 final int M64 = 64 * 1024 * 1024;
111 final int M96 = 96 * 1024 * 1024;
112 final int M128 = 128 * 1024 * 1024;
113 checkMaxNewSize(new String[] { gcName, "-Xmx128M" }, M128);
114 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewRatio=5" }, M128);
115 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewSize=32M" }, M128);
116 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:OldSize=96M" }, M128);
117 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:MaxNewSize=32M" }, M32);
118 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewSize=32M", "-XX:MaxNewSize=32M" }, M32);
119 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewRatio=6", "-XX:MaxNewSize=32M" }, M32);
120 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-Xms96M" }, M128);
121 checkMaxNewSize(new String[] { gcName, "-Xmx96M", "-Xms96M" }, M96);
122 checkMaxNewSize(new String[] { gcName, "-XX:NewSize=128M", "-XX:MaxNewSize=50M"}, M128);
123 }
124 }