1 /*

     2  * Copyright (c) 2014, 2016, 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.process.ExitCode;

    25 import jdk.test.lib.cli.CommandLineOptionTest;

    26 

    27 /**

    28  * @test

    29  * @bug 8031323

    30  * @summary Verify SurvivorAlignmentInBytes option processing.

    31  * @library /test/lib

    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/jdk.internal.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 }