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  */

    23 

    24 /**

    25  * @test

    26  * @bug 8031323

    27  * @summary Verify that objects promoted from eden space to survivor space after

    28  *          minor GC are aligned to SurvivorAlignmentInBytes.

    29  * @library /testlibrary /testlibrary/whitebox

    30  * @build TestPromotionToSurvivor

    31  *        SurvivorAlignmentTestMain AlignmentHelper

    32  * @run main ClassFileInstaller sun.hotspot.WhiteBox

    33  *                              sun.hotspot.WhiteBox$WhiteBoxPermission

    34  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions

    35  *                   -XX:+WhiteBoxAPI -XX:NewSize=128m -XX:MaxNewSize=128m

    36  *                   -XX:SurvivorRatio=1 -XX:+UnlockExperimentalVMOptions

    37  *                   -XX:SurvivorAlignmentInBytes=32 -XX:OldSize=128m

    38  *                   -XX:-ExplicitGCInvokesConcurrent

    39  *                   TestPromotionToSurvivor 10m 9 SURVIVOR

    40  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions

    41  *                   -XX:+WhiteBoxAPI -XX:NewSize=128m -XX:MaxNewSize=128m

    42  *                   -XX:SurvivorRatio=1 -XX:+UnlockExperimentalVMOptions

    43  *                   -XX:SurvivorAlignmentInBytes=32 -XX:OldSize=128m

    44  *                   TestPromotionToSurvivor 20m 47 SURVIVOR

    45  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions

    46  *                   -XX:+WhiteBoxAPI -XX:NewSize=128m -XX:MaxNewSize=128m

    47  *                   -XX:SurvivorRatio=1 -XX:+UnlockExperimentalVMOptions

    48  *                   -XX:SurvivorAlignmentInBytes=64 -XX:OldSize=128m

    49  *                   -XX:-ExplicitGCInvokesConcurrent

    50  *                   TestPromotionToSurvivor 8m 9 SURVIVOR

    51  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions

    52  *                   -XX:+WhiteBoxAPI -XX:NewSize=128m -XX:MaxNewSize=128m

    53  *                   -XX:SurvivorRatio=1 -XX:+UnlockExperimentalVMOptions

    54  *                   -XX:SurvivorAlignmentInBytes=64 -XX:OldSize=128m

    55  *                   -XX:-ExplicitGCInvokesConcurrent

    56  *                   TestPromotionToSurvivor 20m 87 SURVIVOR

    57  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions

    58  *                   -XX:+WhiteBoxAPI -XX:NewSize=256m -XX:MaxNewSize=256m

    59  *                   -XX:SurvivorRatio=1 -XX:+UnlockExperimentalVMOptions

    60  *                   -XX:SurvivorAlignmentInBytes=128 -XX:OldSize=32m

    61  *                   -XX:InitialHeapSize=288m  -XX:-ExplicitGCInvokesConcurrent

    62  *                   TestPromotionToSurvivor 10m 9 SURVIVOR

    63  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions

    64  *                   -XX:+WhiteBoxAPI -XX:NewSize=128m -XX:MaxNewSize=128m

    65  *                   -XX:SurvivorRatio=1 -XX:+UnlockExperimentalVMOptions

    66  *                   -XX:SurvivorAlignmentInBytes=128 -XX:OldSize=128m

    67  *                   -XX:-ExplicitGCInvokesConcurrent

    68  *                   TestPromotionToSurvivor 20m 147 SURVIVOR

    69  */

    70 public class TestPromotionToSurvivor {

    71     public static void main(String args[]) {

    72         SurvivorAlignmentTestMain test

    73                 = SurvivorAlignmentTestMain.fromArgs(args);

    74         System.out.println(test);

    75 

    76         long expectedUsage = test.getExpectedMemoryUsage();

    77         test.baselineMemoryAllocation();

    78         SurvivorAlignmentTestMain.WHITE_BOX.fullGC();

    79 

    80         test.allocate();

    81         SurvivorAlignmentTestMain.WHITE_BOX.youngGC();

    82 

    83         test.verifyMemoryUsage(expectedUsage);

    84     }

    85 }