TestPromotionLABLargeSurvivorAlignment.java revision 10706:969af18f3b36 
1/*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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7 * published by the Free Software Foundation.
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12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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22 */
23
24/**
25 * @test
26 * @bug 8060463
27 * @summary Verify that objects promoted from eden space to survivor space
28 *          with large values for SurvivorAlignmentInBytes succeed.
29 * @requires vm.opt.ExplicitGCInvokesConcurrent != true
30 * @run main/othervm -Xmx128m
31 *                   -XX:+UnlockExperimentalVMOptions
32 *                   -XX:SurvivorAlignmentInBytes=8 -XX:SurvivorRatio=1
33 *                   -XX:-ExplicitGCInvokesConcurrent -XX:-ResizePLAB
34 *                   TestPromotionLABLargeSurvivorAlignment
35 * @run main/othervm -Xmx128m
36 *                   -XX:+UnlockExperimentalVMOptions
37 *                   -XX:SurvivorAlignmentInBytes=16 -XX:SurvivorRatio=1
38 *                   -XX:-ExplicitGCInvokesConcurrent -XX:-ResizePLAB
39 *                   TestPromotionLABLargeSurvivorAlignment
40 * @run main/othervm -Xmx128m
41 *                   -XX:+UnlockExperimentalVMOptions
42 *                   -XX:SurvivorAlignmentInBytes=512 -XX:SurvivorRatio=1
43 *                   -XX:-ExplicitGCInvokesConcurrent -XX:-ResizePLAB
44 *                   TestPromotionLABLargeSurvivorAlignment
45 * @run main/othervm -Xmx128m
46 *                   -XX:+UnlockExperimentalVMOptions
47 *                   -XX:SurvivorAlignmentInBytes=1k -XX:SurvivorRatio=1
48 *                   -XX:-ExplicitGCInvokesConcurrent -XX:-ResizePLAB
49 *                   TestPromotionLABLargeSurvivorAlignment
50 * @run main/othervm -Xmx128m
51 *                   -XX:+UnlockExperimentalVMOptions
52 *                   -XX:SurvivorAlignmentInBytes=4k -XX:SurvivorRatio=1
53 *                   -XX:-ExplicitGCInvokesConcurrent -XX:-ResizePLAB
54 *                   TestPromotionLABLargeSurvivorAlignment
55 * @run main/othervm -Xmx128m
56 *                   -XX:+UnlockExperimentalVMOptions
57 *                   -XX:SurvivorAlignmentInBytes=16k -XX:SurvivorRatio=1
58 *                   -XX:-ExplicitGCInvokesConcurrent -XX:-ResizePLAB
59 *                   TestPromotionLABLargeSurvivorAlignment
60 */
61public class TestPromotionLABLargeSurvivorAlignment {
62    public static void main(String args[]) {
63        Object garbage[] = new Object[1000000];
64        for (int i = 0; i < garbage.length; i++) {
65            garbage[i] = new byte[0];
66        }
67        for (int i = 0; i < 2; i++) {
68            System.gc();
69        }
70    }
71}
72
73