1 /*
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   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
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   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  *
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  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
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  23 
  24 /**
  25  * @test
  26  * @bug 8031323
  27  * @summary Verify that objects promoted from survivor space to tenured space
  28  *          when their age exceeded tenuring threshold are not aligned to
  29  *          SurvivorAlignmentInBytes value.
  30  * @requires vm.gc != "Z" & vm.gc != "Shenandoah"
  31  * @library /test/lib
  32  * @modules java.base/jdk.internal.misc
  33  *          java.management
  34  * @build sun.hotspot.WhiteBox
  35  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  36  *                              sun.hotspot.WhiteBox$WhiteBoxPermission
  37  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  38  *                   -XX:+WhiteBoxAPI -XX:NewSize=128m -XX:MaxNewSize=128m
  39  *                   -XX:OldSize=32M -XX:MaxHeapSize=160m -XX:SurvivorRatio=1 -XX:-ResizePLAB
  40  *                   -XX:-ExplicitGCInvokesConcurrent
  41  *                   -XX:+UnlockExperimentalVMOptions
  42  *                   -XX:SurvivorAlignmentInBytes=32
  43  *                   TestPromotionFromSurvivorToTenuredAfterMinorGC 10m 9
  44  *                   TENURED
  45  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  46  *                   -XX:+WhiteBoxAPI -XX:NewSize=128m -XX:MaxNewSize=128m
  47  *                   -XX:OldSize=32M -XX:MaxHeapSize=160m -XX:SurvivorRatio=1 -XX:-ResizePLAB
  48  *                   -XX:-ExplicitGCInvokesConcurrent
  49  *                   -XX:+UnlockExperimentalVMOptions
  50  *                   -XX:SurvivorAlignmentInBytes=32
  51  *                   TestPromotionFromSurvivorToTenuredAfterMinorGC 20m 47
  52  *                   TENURED
  53  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  54  *                   -XX:+WhiteBoxAPI -XX:NewSize=200m -XX:MaxNewSize=200m
  55  *                   -XX:OldSize=32M -XX:MaxHeapSize=232m -XX:SurvivorRatio=1 -XX:-ResizePLAB
  56  *                   -XX:-ExplicitGCInvokesConcurrent
  57  *                   -XX:+UnlockExperimentalVMOptions
  58  *                   -XX:SurvivorAlignmentInBytes=64
  59  *                   TestPromotionFromSurvivorToTenuredAfterMinorGC 10m 9
  60  *                   TENURED
  61  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  62  *                   -XX:+WhiteBoxAPI -XX:NewSize=128m -XX:MaxNewSize=128m
  63  *                   -XX:OldSize=32M -XX:MaxHeapSize=160m -XX:SurvivorRatio=1 -XX:-ResizePLAB
  64  *                   -XX:-ExplicitGCInvokesConcurrent
  65  *                   -XX:+UnlockExperimentalVMOptions
  66  *                   -XX:SurvivorAlignmentInBytes=64
  67  *                   TestPromotionFromSurvivorToTenuredAfterMinorGC 20m 87
  68  *                   TENURED
  69  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  70  *                   -XX:+WhiteBoxAPI -XX:NewSize=256m -XX:MaxNewSize=256m
  71  *                   -XX:OldSize=32M -XX:MaxHeapSize=288m -XX:SurvivorRatio=1 -XX:-ResizePLAB
  72  *                   -XX:-ExplicitGCInvokesConcurrent
  73  *                   -XX:+UnlockExperimentalVMOptions
  74  *                   -XX:SurvivorAlignmentInBytes=128
  75  *                    TestPromotionFromSurvivorToTenuredAfterMinorGC 10m 9
  76  *                    TENURED
  77  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  78  *                   -XX:+WhiteBoxAPI -XX:NewSize=128m -XX:MaxNewSize=128m
  79  *                   -XX:OldSize=32M -XX:MaxHeapSize=160m -XX:SurvivorRatio=1 -XX:-ResizePLAB
  80  *                   -XX:-ExplicitGCInvokesConcurrent
  81  *                   -XX:+UnlockExperimentalVMOptions
  82  *                   -XX:SurvivorAlignmentInBytes=128
  83  *                   TestPromotionFromSurvivorToTenuredAfterMinorGC 20m 147
  84  *                   TENURED
  85  */
  86 public class TestPromotionFromSurvivorToTenuredAfterMinorGC {
  87     public static void main(String args[]) throws Exception {
  88         SurvivorAlignmentTestMain test
  89                 = SurvivorAlignmentTestMain.fromArgs(args);
  90         System.out.println(test);
  91 
  92         long expectedMemoryUsage = test.getExpectedMemoryUsage();
  93         test.baselineMemoryAllocation();
  94         SurvivorAlignmentTestMain.WHITE_BOX.fullGC();
  95         // increase expected usage by current old gen usage
  96         expectedMemoryUsage += SurvivorAlignmentTestMain.getAlignmentHelper(
  97                 SurvivorAlignmentTestMain.HeapSpace.TENURED)
  98                 .getActualMemoryUsage();
  99 
 100         test.allocate();
 101         for (int i = 0; i <= SurvivorAlignmentTestMain.MAX_TENURING_THRESHOLD; i++) {
 102             SurvivorAlignmentTestMain.WHITE_BOX.youngGC();
 103         }
 104 
 105         // Sometimes we see that data unrelated to the test has been allocated during
 106         // the loop. This data is included in the expectedMemoryUsage since we look
 107         // through all threads to see what they allocated. If this data is still in
 108         // the survivor area however, it should not be included in expectedMemoryUsage
 109         // since the verification below only look at what's in tenured space.
 110         expectedMemoryUsage -= SurvivorAlignmentTestMain.getAlignmentHelper(
 111                                    SurvivorAlignmentTestMain.HeapSpace.SURVIVOR)
 112                                    .getActualMemoryUsage();
 113         test.verifyMemoryUsage(expectedMemoryUsage);
 114     }
 115 }