Mercurial > hg > truffle
comparison test/compiler/6885584/Test6885584.java @ 1009:03b336640699
6885584: A particular class structure causes large allocation spike for jit
Reviewed-by: kvn
author | never |
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date | Wed, 07 Oct 2009 15:38:37 -0700 |
parents | |
children | c18cbe5936b8 |
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1 /* | |
2 * Copyright 2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 /** | |
26 * @test | |
27 * @bug 6885584 | |
28 * @summary A particular class structure causes large allocation spike for jit | |
29 * | |
30 * @run main/othervm -Xbatch Test6885584 | |
31 */ | |
32 | |
33 | |
34 | |
35 public class Test6885584 { | |
36 static private int i1; | |
37 static private int i2; | |
38 static private int i3; | |
39 | |
40 static int limit = Integer.MAX_VALUE - 8; | |
41 | |
42 public static void main(String args[]) { | |
43 // Run long enough to trigger an OSR | |
44 for(int j = 200000; j != 0; j--) { | |
45 } | |
46 | |
47 // This must reference a field | |
48 i1 = i2; | |
49 | |
50 // The resource leak is roughly proportional to this initial value | |
51 for(int k = Integer.MAX_VALUE - 1; k != 0; k--) { | |
52 // Make sure the body does some work | |
53 if(i2 > i3)i1 = k; | |
54 if (k <= limit) break; | |
55 } | |
56 } | |
57 | |
58 } |