jdk8-mips64-public/hotspot: test/gc/arguments/TestSurvivorAlignmentInBytesOption.java@6cbff0651f1a

     1 /*

     2  * Copyright (c) 2014, 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  */

    24 import com.oracle.java.testlibrary.ExitCode;

    25 import com.oracle.java.testlibrary.cli.CommandLineOptionTest;

    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  * @run main TestSurvivorAlignmentInBytesOption

    38  */

    39 public class TestSurvivorAlignmentInBytesOption {

    40     public static void main(String args[]) throws Throwable {

    41         String optionName = "SurvivorAlignmentInBytes";

    42         String unlockExperimentalVMOpts = "UnlockExperimentalVMOptions";

    43         String optionIsExperimental

    44                 = CommandLineOptionTest.getExperimentalOptionErrorMessage(

    45                 optionName);

    46         String valueIsTooSmall= ".*SurvivorAlignmentInBytes=.*must be greater"

    47                 + " than ObjectAlignmentInBytes.*";

    48         String mustBePowerOf2 = ".*SurvivorAlignmentInBytes=.*must be "

    49                 + "power of 2.*";

    51         // Verify that without -XX:+UnlockExperimentalVMOptions usage of

    52         // SurvivorAlignmentInBytes option will cause JVM startup failure

    53         // with the warning message saying that that option is experimental.

    54         CommandLineOptionTest.verifyJVMStartup(

    55                 new String[]{optionIsExperimental}, null, ExitCode.FAIL, false,

    56                 "-XX:-UnlockExperimentalVMOptions",

    57                 CommandLineOptionTest.prepareBooleanFlag(

    58                         unlockExperimentalVMOpts, false),

    59                 CommandLineOptionTest.prepareNumericFlag(optionName, 64));

    61         // Verify that with -XX:+UnlockExperimentalVMOptions passed to JVM

    62         // usage of SurvivorAlignmentInBytes option won't cause JVM startup

    63         // failure.

    64         CommandLineOptionTest.verifyJVMStartup(

    65                 null, new String[]{optionIsExperimental}, ExitCode.OK, false,

    66                 CommandLineOptionTest.prepareBooleanFlag(

    67                         unlockExperimentalVMOpts, true),

    68                 CommandLineOptionTest.prepareNumericFlag(optionName, 64));

    70         // Verify that if specified SurvivorAlignmentInBytes is lower then

    71         // ObjectAlignmentInBytes, then the JVM startup will fail with

    72         // appropriate error message.

    73         CommandLineOptionTest.verifyJVMStartup(

    74                 new String[]{valueIsTooSmall}, null, ExitCode.FAIL, false,

    75                 CommandLineOptionTest.prepareBooleanFlag(

    76                         unlockExperimentalVMOpts, true),

    77                 CommandLineOptionTest.prepareNumericFlag(optionName, 2));

    79         // Verify that if specified SurvivorAlignmentInBytes value is not

    80         // a power of 2 then the JVM startup will fail with appropriate error

    81         // message.

    82         CommandLineOptionTest.verifyJVMStartup(

    83                 new String[]{mustBePowerOf2}, null, ExitCode.FAIL, false,

    84                 CommandLineOptionTest.prepareBooleanFlag(

    85                         unlockExperimentalVMOpts, true),

    86                 CommandLineOptionTest.prepareNumericFlag(optionName, 127));

    88         // Verify that if SurvivorAlignmentInBytes has correct value, then

    89         // the JVM will be started without errors.

    90         CommandLineOptionTest.verifyJVMStartup(

    91                 null, new String[]{".*SurvivorAlignmentInBytes.*"},

    92                 ExitCode.OK, false,

    93                 CommandLineOptionTest.prepareBooleanFlag(

    94                         unlockExperimentalVMOpts, true),

    95                 CommandLineOptionTest.prepareNumericFlag(optionName, 128));

    97         // Verify that we can setup different SurvivorAlignmentInBytes values.

    98         for (int alignment = 32; alignment <= 128; alignment *= 2) {

    99             CommandLineOptionTest.verifyOptionValue(optionName,

   100                     Integer.toString(alignment),

   101                     CommandLineOptionTest.prepareBooleanFlag(

   102                             unlockExperimentalVMOpts, true),

   103                     CommandLineOptionTest.prepareNumericFlag(

   104                             optionName, alignment));

   105         }

   106     }

   107 }

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