Mercurial > jdk8-mips64-public > hotspot / annotate
test/gc/class_unloading/AllocateBeyondMetaspaceSize.java@14b8221771dc (annotated)
test/gc/class_unloading/AllocateBeyondMetaspaceSize.java
Wed, 03 Sep 2014 09:25:44 +0200
- author
- tschatzl
- date
- Wed, 03 Sep 2014 09:25:44 +0200
- changeset 7097
- 14b8221771dc
- parent 6996
- f3aeae1f9fc5
- permissions
- -rw-r--r--
Merge
| stefank@6996 | 1 | /* |
| stefank@6996 | 2 | * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
| stefank@6996 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| stefank@6996 | 4 | * |
| stefank@6996 | 5 | * This code is free software; you can redistribute it and/or modify it |
| stefank@6996 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| stefank@6996 | 7 | * published by the Free Software Foundation. |
| stefank@6996 | 8 | * |
| stefank@6996 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| stefank@6996 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| stefank@6996 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| stefank@6996 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| stefank@6996 | 13 | * accompanied this code). |
| stefank@6996 | 14 | * |
| stefank@6996 | 15 | * You should have received a copy of the GNU General Public License version |
| stefank@6996 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| stefank@6996 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| stefank@6996 | 18 | * |
| stefank@6996 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| stefank@6996 | 20 | * or visit www.oracle.com if you need additional information or have any |
| stefank@6996 | 21 | * questions. |
| stefank@6996 | 22 | */ |
| stefank@6996 | 23 | |
| stefank@6996 | 24 | import sun.hotspot.WhiteBox; |
| stefank@6996 | 25 | |
| stefank@6996 | 26 | class AllocateBeyondMetaspaceSize { |
| stefank@6996 | 27 | public static Object dummy; |
| stefank@6996 | 28 | |
| stefank@6996 | 29 | public static void main(String [] args) { |
| stefank@6996 | 30 | if (args.length != 2) { |
| stefank@6996 | 31 | throw new IllegalArgumentException("Usage: <MetaspaceSize> <YoungGenSize>"); |
| stefank@6996 | 32 | } |
| stefank@6996 | 33 | |
| stefank@6996 | 34 | long metaspaceSize = Long.parseLong(args[0]); |
| stefank@6996 | 35 | long youngGenSize = Long.parseLong(args[1]); |
| stefank@6996 | 36 | |
| stefank@6996 | 37 | run(metaspaceSize, youngGenSize); |
| stefank@6996 | 38 | } |
| stefank@6996 | 39 | |
| stefank@6996 | 40 | private static void run(long metaspaceSize, long youngGenSize) { |
| stefank@6996 | 41 | WhiteBox wb = WhiteBox.getWhiteBox(); |
| stefank@6996 | 42 | |
| stefank@6996 | 43 | long allocationBeyondMetaspaceSize = metaspaceSize * 2; |
| stefank@6996 | 44 | long metaspace = wb.allocateMetaspace(null, allocationBeyondMetaspaceSize); |
| stefank@6996 | 45 | |
| stefank@6996 | 46 | triggerYoungGC(youngGenSize); |
| stefank@6996 | 47 | |
| stefank@6996 | 48 | wb.freeMetaspace(null, metaspace, metaspace); |
| stefank@6996 | 49 | } |
| stefank@6996 | 50 | |
| stefank@6996 | 51 | private static void triggerYoungGC(long youngGenSize) { |
| stefank@6996 | 52 | long approxAllocSize = 32 * 1024; |
| stefank@6996 | 53 | long numAllocations = 2 * youngGenSize / approxAllocSize; |
| stefank@6996 | 54 | |
| stefank@6996 | 55 | for (long i = 0; i < numAllocations; i++) { |
| stefank@6996 | 56 | dummy = new byte[(int)approxAllocSize]; |
| stefank@6996 | 57 | } |
| stefank@6996 | 58 | } |
| stefank@6996 | 59 | } |
