1 /*
2 * Copyright (c) 2013, 2019, 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 package gc.arguments;
25
26 /*
27 * @test TestMaxNewSize
28 * @key gc
29 * @bug 7057939
30 * @summary Make sure that MaxNewSize always has a useful value after argument
31 * processing.
32 * @requires vm.gc=="null"
33 * @library /test/lib
34 * @modules java.base/jdk.internal.misc
35 * java.management
36 * @run main gc.arguments.TestMaxNewSize -XX:+UseSerialGC
37 * @run main gc.arguments.TestMaxNewSize -XX:+UseParallelGC
38 * @run main gc.arguments.TestMaxNewSize -XX:+UseG1GC
39 * @author thomas.schatzl@oracle.com, jesper.wilhelmsson@oracle.com
40 */
41
42 /*
43 * @test TestMaxNewSizeCMS
44 * @key gc
45 * @bug 7057939
46 * @comment Graal does not support CMS
47 * @requires vm.gc=="null" & !vm.graal.enabled
48 * @library /test/lib
49 * @modules java.base/jdk.internal.misc
50 * java.management
51 * @run main gc.arguments.TestMaxNewSize -XX:+UseConcMarkSweepGC
52 */
53
54 import java.util.regex.Matcher;
55 import java.util.regex.Pattern;
56
57 import java.math.BigInteger;
58
59 import java.util.ArrayList;
60 import java.util.Arrays;
61
62 import jdk.test.lib.process.OutputAnalyzer;
63 import jdk.test.lib.process.ProcessTools;
64
65 public class TestMaxNewSize {
66
67 private static void checkMaxNewSize(String[] flags, int heapsize) throws Exception {
68 BigInteger actual = new BigInteger(getMaxNewSize(flags));
69 System.out.println(actual);
70 if (actual.compareTo(new BigInteger((new Long(heapsize)).toString())) == 1) {
71 throw new RuntimeException("MaxNewSize value set to \"" + actual +
72 "\", expected otherwise when running with the following flags: " + Arrays.asList(flags).toString());
73 }
74 }
75
76 private static void checkIncompatibleNewSize(String[] flags) throws Exception {
77 ArrayList<String> finalargs = new ArrayList<String>();
78 finalargs.addAll(Arrays.asList(flags));
79 finalargs.add("-version");
80
81 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(finalargs.toArray(new String[0]));
82 OutputAnalyzer output = new OutputAnalyzer(pb.start());
83 output.shouldContain("Initial young gen size set larger than the maximum young gen size");
84 }
85
86 private static boolean isRunningG1(String[] args) {
87 for (int i = 0; i < args.length; i++) {
88 if (args[i].contains("+UseG1GC")) {
89 return true;
90 }
91 }
92 return false;
93 }
94
95 private static String getMaxNewSize(String[] flags) throws Exception {
96 ArrayList<String> finalargs = new ArrayList<String>();
97 finalargs.addAll(Arrays.asList(flags));
98 if (isRunningG1(flags)) {
99 finalargs.add("-XX:G1HeapRegionSize=1M");
100 }
101 finalargs.add("-XX:+PrintFlagsFinal");
102 finalargs.add("-version");
103
104 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(finalargs.toArray(new String[0]));
105 OutputAnalyzer output = new OutputAnalyzer(pb.start());
106 output.shouldHaveExitValue(0);
107 String stdout = output.getStdout();
108 //System.out.println(stdout);
109 return getFlagValue("MaxNewSize", stdout);
110 }
111
112 private static String getFlagValue(String flag, String where) {
113 Matcher m = Pattern.compile(flag + "\\s+:?=\\s+\\d+").matcher(where);
114 if (!m.find()) {
115 throw new RuntimeException("Could not find value for flag " + flag + " in output string");
116 }
117 String match = m.group();
118 return match.substring(match.lastIndexOf(" ") + 1, match.length());
119 }
120
121 public static void main(String args[]) throws Exception {
122 String gcName = args[0];
123 final int M32 = 32 * 1024 * 1024;
124 final int M64 = 64 * 1024 * 1024;
125 final int M96 = 96 * 1024 * 1024;
126 final int M128 = 128 * 1024 * 1024;
127 checkMaxNewSize(new String[] { gcName, "-Xmx128M" }, M128);
128 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewRatio=5" }, M128);
129 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewSize=32M" }, M128);
130 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:OldSize=96M" }, M128);
131 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:MaxNewSize=32M" }, M32);
132 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewSize=32M", "-XX:MaxNewSize=32M" }, M32);
133 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewRatio=6", "-XX:MaxNewSize=32M" }, M32);
134 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-Xms96M" }, M128);
135 checkMaxNewSize(new String[] { gcName, "-Xmx96M", "-Xms96M" }, M96);
136 checkMaxNewSize(new String[] { gcName, "-XX:NewSize=128M", "-XX:MaxNewSize=50M"}, M128);
137 }
138 }