Mercurial > hg > truffle
comparison test/gc/7168848/HumongousAlloc.java @ 6105:9a344d88dc22
7168848: Add test to check that humongous object allocation path also checks the heap occupancy.
Summary: Added test that checks humongous object allocation path also check the heap occupancy and initiate a marking cycle when / if needed.
Reviewed-by: brutisso, jwilhelm
author | mnunez |
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date | Mon, 21 May 2012 14:59:59 +0200 |
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6104:c92a79900986 | 6105:9a344d88dc22 |
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1 /* | |
2 * Copyright (c) 2012, 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 Humongous.java | |
26 * @bug 7168848 | |
27 * @summary G1: humongous object allocations should initiate marking cycles when necessary | |
28 * @run main/othervm -Xms100m -Xmx100m -XX:+PrintGC -XX:G1HeapRegionSize=1m -XX:+UseG1GC HumongousAlloc | |
29 * | |
30 */ | |
31 import java.lang.management.GarbageCollectorMXBean; | |
32 import java.lang.management.ManagementFactory; | |
33 import java.util.List; | |
34 | |
35 public class HumongousAlloc { | |
36 | |
37 public static byte[] dummy; | |
38 private static int sleepFreq = 40; | |
39 private static int sleepTime = 1000; | |
40 private static double size = 0.75; | |
41 private static int iterations = 50; | |
42 private static int MB = 1024 * 1024; | |
43 | |
44 public static void allocate(int size, int sleepTime, int sleepFreq) throws InterruptedException { | |
45 System.out.println("Will allocate objects of size: " + size | |
46 + " bytes and sleep for " + sleepTime | |
47 + " ms after every " + sleepFreq + "th allocation."); | |
48 int count = 0; | |
49 while (count < iterations) { | |
50 for (int i = 0; i < sleepFreq; i++) { | |
51 dummy = new byte[size - 16]; | |
52 } | |
53 Thread.sleep(sleepTime); | |
54 count++; | |
55 } | |
56 } | |
57 | |
58 public static void main(String[] args) throws InterruptedException { | |
59 allocate((int) (size * MB), sleepTime, sleepFreq); | |
60 List<GarbageCollectorMXBean> collectors = ManagementFactory.getGarbageCollectorMXBeans(); | |
61 for (GarbageCollectorMXBean collector : collectors) { | |
62 if (collector.getName().contains("G1 Old")) { | |
63 long count = collector.getCollectionCount(); | |
64 if (count > 0) { | |
65 throw new RuntimeException("Failed: FullGCs should not have happened. The number of FullGC run is " + count); | |
66 } | |
67 else { | |
68 System.out.println("Passed."); | |
69 } | |
70 } | |
71 } | |
72 } | |
73 } | |
74 |