1 /*
   2  * Copyright (c) 2014, 2019, 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 package gc.survivorAlignment;
  25 
  26 /**
  27  * @test
  28  * @bug 8031323
  29  * @summary Verify that objects promoted from eden space to survivor space after
  30  *          minor GC are aligned to SurvivorAlignmentInBytes.
  31  * @requires vm.gc != "Z" & vm.gc != "Shenandoah"
  32  * @library /test/lib
  33  * @modules java.base/jdk.internal.misc
  34  *          java.management
  35  * @build sun.hotspot.WhiteBox
  36  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  37  *                              sun.hotspot.WhiteBox$WhiteBoxPermission
  38  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  39  *                   -XX:+WhiteBoxAPI -XX:NewSize=128m -XX:MaxNewSize=128m
  40  *                   -XX:SurvivorRatio=1 -XX:+UnlockExperimentalVMOptions
  41  *                   -XX:SurvivorAlignmentInBytes=32 -XX:OldSize=128m
  42  *                   -XX:MaxHeapSize=256m -XX:-ExplicitGCInvokesConcurrent -XX:-ResizePLAB
  43  *                   gc.survivorAlignment.TestPromotionToSurvivor 10m 9 SURVIVOR
  44  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  45  *                   -XX:+WhiteBoxAPI -XX:NewSize=128m -XX:MaxNewSize=128m
  46  *                   -XX:SurvivorRatio=1 -XX:+UnlockExperimentalVMOptions
  47  *                   -XX:SurvivorAlignmentInBytes=32 -XX:OldSize=128m
  48  *                   -XX:MaxHeapSize=256m -XX:-ExplicitGCInvokesConcurrent -XX:-ResizePLAB
  49  *                   gc.survivorAlignment.TestPromotionToSurvivor 20m 47 SURVIVOR
  50  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  51  *                   -XX:+WhiteBoxAPI -XX:NewSize=128m -XX:MaxNewSize=128m
  52  *                   -XX:SurvivorRatio=1 -XX:+UnlockExperimentalVMOptions
  53  *                   -XX:SurvivorAlignmentInBytes=64 -XX:OldSize=128m
  54  *                   -XX:MaxHeapSize=256m -XX:-ExplicitGCInvokesConcurrent -XX:-ResizePLAB
  55  *                   gc.survivorAlignment.TestPromotionToSurvivor 8m 9 SURVIVOR
  56  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  57  *                   -XX:+WhiteBoxAPI -XX:NewSize=128m -XX:MaxNewSize=128m
  58  *                   -XX:SurvivorRatio=1 -XX:+UnlockExperimentalVMOptions
  59  *                   -XX:SurvivorAlignmentInBytes=64 -XX:OldSize=128m
  60  *                   -XX:MaxHeapSize=256m -XX:-ExplicitGCInvokesConcurrent -XX:-ResizePLAB
  61  *                   gc.survivorAlignment.TestPromotionToSurvivor 20m 87 SURVIVOR
  62  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  63  *                   -XX:+WhiteBoxAPI -XX:NewSize=256m -XX:MaxNewSize=256m
  64  *                   -XX:SurvivorRatio=1 -XX:+UnlockExperimentalVMOptions
  65  *                   -XX:SurvivorAlignmentInBytes=128 -XX:OldSize=128m
  66  *                   -XX:MaxHeapSize=384m  -XX:-ExplicitGCInvokesConcurrent -XX:-ResizePLAB
  67  *                   gc.survivorAlignment.TestPromotionToSurvivor 10m 9 SURVIVOR
  68  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  69  *                   -XX:+WhiteBoxAPI -XX:NewSize=128m -XX:MaxNewSize=128m
  70  *                   -XX:SurvivorRatio=1 -XX:+UnlockExperimentalVMOptions
  71  *                   -XX:SurvivorAlignmentInBytes=128 -XX:OldSize=128m
  72  *                   -XX:MaxHeapSize=256m -XX:-ExplicitGCInvokesConcurrent -XX:-ResizePLAB
  73  *                   gc.survivorAlignment.TestPromotionToSurvivor 20m 147 SURVIVOR
  74  */
  75 public class TestPromotionToSurvivor {
  76     public static void main(String args[]) {
  77         SurvivorAlignmentTestMain test
  78                 = SurvivorAlignmentTestMain.fromArgs(args);
  79         System.out.println(test);
  80 
  81         long expectedUsage = test.getExpectedMemoryUsage();
  82         test.baselineMemoryAllocation();
  83         SurvivorAlignmentTestMain.WHITE_BOX.fullGC();
  84 
  85         test.allocate();
  86         SurvivorAlignmentTestMain.WHITE_BOX.youngGC();
  87 
  88         test.verifyMemoryUsage(expectedUsage);
  89     }
  90 }