Mercurial > hg > truffle

annotate test/gc/class_unloading/AllocateBeyondMetaspaceSize.java @ 20282:f3aeae1f9fc5

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
8048269: Add flag to turn off class unloading after G1 concurrent mark Summary: Added -XX:+/-ClassUnloadingWithConcurrentMark Reviewed-by: jmasa, brutisso, mgerdin
author stefank
date Wed, 06 Aug 2014 09:55:16 +0200
parents
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
20282
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
1 /*
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
4 *
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
5 * This code is free software; you can redistribute it and/or modify it
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
6 * under the terms of the GNU General Public License version 2 only, as
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
7 * published by the Free Software Foundation.
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
8 *
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
9 * This code is distributed in the hope that it will be useful, but WITHOUT
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
12 * version 2 for more details (a copy is included in the LICENSE file that
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
13 * accompanied this code).
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
14 *
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
15 * You should have received a copy of the GNU General Public License version
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
16 * 2 along with this work; if not, write to the Free Software Foundation,
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
18 *
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
20 * or visit www.oracle.com if you need additional information or have any
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
21 * questions.
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
22 */
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
23
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
24 import sun.hotspot.WhiteBox;
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
25
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
26 class AllocateBeyondMetaspaceSize {
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
27 public static Object dummy;
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
28
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
29 public static void main(String [] args) {
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
30 if (args.length != 2) {
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
31 throw new IllegalArgumentException("Usage: <MetaspaceSize> <YoungGenSize>");
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
32 }
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
33
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
34 long metaspaceSize = Long.parseLong(args[0]);
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
35 long youngGenSize = Long.parseLong(args[1]);
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
36
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
37 run(metaspaceSize, youngGenSize);
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
38 }
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
39
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
40 private static void run(long metaspaceSize, long youngGenSize) {
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
41 WhiteBox wb = WhiteBox.getWhiteBox();
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
42
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
43 long allocationBeyondMetaspaceSize = metaspaceSize * 2;
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
44 long metaspace = wb.allocateMetaspace(null, allocationBeyondMetaspaceSize);
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
45
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
46 triggerYoungGC(youngGenSize);
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
47
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
48 wb.freeMetaspace(null, metaspace, metaspace);
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
49 }
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
50
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
51 private static void triggerYoungGC(long youngGenSize) {
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
52 long approxAllocSize = 32 * 1024;
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
53 long numAllocations = 2 * youngGenSize / approxAllocSize;
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
54
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
55 for (long i = 0; i < numAllocations; i++) {
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
56 dummy = new byte[(int)approxAllocSize];
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
57 }
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
58 }
f3aeae1f9fc5 8048269: Add flag to turn off class unloading after G1 concurrent mark
stefank
parents:
diff changeset
59 }