1 /*
2 * Copyright (c) 2014, 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 import jdk.test.lib.ExitCode;
25 import 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 */
41 public 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 }