TestSurvivorAlignmentInBytesOption.java revision 8569:5bbf25472731 
1/*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 * This code is free software; you can redistribute it and/or modify it
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7 * published by the Free Software Foundation.
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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).
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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.
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22 */
23
24import jdk.test.lib.ExitCode;
25import jdk.test.lib.cli.CommandLineOptionTest;
26
27/**
28 * @test
29 * @bug 8031323
30 * @summary Verify SurvivorAlignmentInBytes option processing.
31 * @library /testlibrary
32 * @requires vm.opt.SurvivorAlignmentInBytes == null
33 *           & vm.opt.ObjectAlignmentInBytes == null
34 *           & vm.opt.UnlockExperimentalVMOptions == null
35 *           & (vm.opt.IgnoreUnrecognizedVMOptions == null
36 *              | vm.opt.IgnoreUnrecognizedVMOptions == "false")
37 * @modules java.base/sun.misc
38 *          java.management
39 * @run main TestSurvivorAlignmentInBytesOption
40 */
41public class TestSurvivorAlignmentInBytesOption {
42    public static void main(String args[]) throws Throwable {
43        String optionName = "SurvivorAlignmentInBytes";
44        String unlockExperimentalVMOpts = "UnlockExperimentalVMOptions";
45        String optionIsExperimental
46                = CommandLineOptionTest.getExperimentalOptionErrorMessage(
47                optionName);
48        String valueIsTooSmall= ".*SurvivorAlignmentInBytes.*must be greater"
49                + " than or equal to ObjectAlignmentInBytes.*";
50        String mustBePowerOf2 = ".*SurvivorAlignmentInBytes.*must be "
51                + "power of 2.*";
52
53        // Verify that without -XX:+UnlockExperimentalVMOptions usage of
54        // SurvivorAlignmentInBytes option will cause JVM startup failure
55        // with the warning message saying that that option is experimental.
56        String shouldFailMessage = String.format("JVM option '%s' is "
57                + "experimental.%nJVM startup should fail without "
58                + "-XX:+UnlockExperimentalVMOptions option", optionName);
59        CommandLineOptionTest.verifyJVMStartup(
60                new String[]{optionIsExperimental}, null,
61                shouldFailMessage, shouldFailMessage,
62                ExitCode.FAIL, false,
63                "-XX:-UnlockExperimentalVMOptions",
64                CommandLineOptionTest.prepareBooleanFlag(
65                        unlockExperimentalVMOpts, false),
66                CommandLineOptionTest.prepareNumericFlag(optionName, 64));
67
68        // Verify that with -XX:+UnlockExperimentalVMOptions passed to JVM
69        // usage of SurvivorAlignmentInBytes option won't cause JVM startup
70        // failure.
71        String shouldPassMessage = String.format("JVM option '%s' is "
72                + "experimental.%nJVM startup should pass with "
73                + "-XX:+UnlockExperimentalVMOptions option", optionName);
74        String noWarningMessage = "There should be no warnings when use "
75                + "with -XX:+UnlockExperimentalVMOptions option";
76        CommandLineOptionTest.verifyJVMStartup(
77                null, new String[]{optionIsExperimental},
78                shouldPassMessage, noWarningMessage,
79                ExitCode.OK, false,
80                CommandLineOptionTest.prepareBooleanFlag(
81                        unlockExperimentalVMOpts, true),
82                CommandLineOptionTest.prepareNumericFlag(optionName, 64));
83
84        // Verify that if specified SurvivorAlignmentInBytes is lower than
85        // ObjectAlignmentInBytes, then the JVM startup will fail with
86        // appropriate error message.
87        shouldFailMessage = String.format("JVM startup should fail with "
88                + "'%s' option value lower than ObjectAlignmentInBytes", optionName);
89        CommandLineOptionTest.verifyJVMStartup(
90                new String[]{valueIsTooSmall}, null,
91                shouldFailMessage, shouldFailMessage,
92                ExitCode.FAIL, false,
93                CommandLineOptionTest.prepareBooleanFlag(
94                        unlockExperimentalVMOpts, true),
95                CommandLineOptionTest.prepareNumericFlag(optionName, 2));
96
97        // Verify that if specified SurvivorAlignmentInBytes value is not
98        // a power of 2 then the JVM startup will fail with appropriate error
99        // message.
100        shouldFailMessage = String.format("JVM startup should fail with "
101                + "'%s' option value is not a power of 2", optionName);
102        CommandLineOptionTest.verifyJVMStartup(
103                new String[]{mustBePowerOf2}, null,
104                shouldFailMessage, shouldFailMessage,
105                ExitCode.FAIL, false,
106                CommandLineOptionTest.prepareBooleanFlag(
107                        unlockExperimentalVMOpts, true),
108                CommandLineOptionTest.prepareNumericFlag(optionName, 127));
109
110        // Verify that if SurvivorAlignmentInBytes has correct value, then
111        // the JVM will be started without errors.
112        shouldPassMessage = String.format("JVM startup should pass with "
113                + "correct '%s' option value", optionName);
114        noWarningMessage = String.format("There should be no warnings when use "
115                + "correct '%s' option value", optionName);
116        CommandLineOptionTest.verifyJVMStartup(
117                null, new String[]{".*SurvivorAlignmentInBytes.*"},
118                shouldPassMessage, noWarningMessage,
119                ExitCode.OK, false,
120                CommandLineOptionTest.prepareBooleanFlag(
121                        unlockExperimentalVMOpts, true),
122                CommandLineOptionTest.prepareNumericFlag(optionName, 128));
123
124        // Verify that we can setup different SurvivorAlignmentInBytes values.
125        for (int alignment = 32; alignment <= 128; alignment *= 2) {
126            shouldPassMessage = String.format("JVM startup should pass with "
127                    + "'%s' = %d", optionName, alignment);
128            CommandLineOptionTest.verifyOptionValue(optionName,
129                    Integer.toString(alignment), shouldPassMessage,
130                    CommandLineOptionTest.prepareBooleanFlag(
131                            unlockExperimentalVMOpts, true),
132                    CommandLineOptionTest.prepareNumericFlag(
133                            optionName, alignment));
134        }
135    }
136}
137