Mercurial > hg > truffle
comparison test/compiler/uncommontrap/TestSpecTrapClassUnloading.java @ 17743:f0ea4d3df129 jdk8u20-b07
Merge
author | amurillo |
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date | Tue, 25 Mar 2014 10:48:42 -0700 |
parents | 8f28240318a2 |
children | 92aa6797d639 |
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17724:7ce7247df891 | 17743:f0ea4d3df129 |
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1 /* | |
2 * Copyright (c) 2014, 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 | |
26 * @bug 8031752 | |
27 * @summary speculative traps need to be cleaned up at GC | |
28 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-TieredCompilation -XX:-UseOnStackReplacement -XX:-BackgroundCompilation -XX:+UseTypeSpeculation -XX:TypeProfileLevel=222 -XX:CompileCommand=exclude,java.lang.reflect.Method::invoke -XX:CompileCommand=exclude,sun.reflect.DelegatingMethodAccessorImpl::invoke -Xmx1M TestSpecTrapClassUnloading | |
29 * | |
30 */ | |
31 | |
32 import java.lang.reflect.Method; | |
33 | |
34 public class TestSpecTrapClassUnloading { | |
35 static class B { | |
36 final public boolean m(Object o) { | |
37 if (o.getClass() == B.class) { | |
38 return true; | |
39 } | |
40 return false; | |
41 } | |
42 } | |
43 | |
44 static class MemoryChunk { | |
45 MemoryChunk other; | |
46 long[] array; | |
47 MemoryChunk(MemoryChunk other) { | |
48 other = other; | |
49 array = new long[1024 * 1024 * 1024]; | |
50 } | |
51 } | |
52 | |
53 static void m1(B b, Object o) { | |
54 b.m(o); | |
55 } | |
56 | |
57 static void m2(B b, Object o) { | |
58 b.m(o); | |
59 } | |
60 | |
61 public static void main(String[] args) throws Exception { | |
62 Method m = B.class.getMethod("m", Object.class); | |
63 Object o = new Object(); | |
64 B b = new B(); | |
65 | |
66 // add speculative trap in B.m() for m1 | |
67 for (int i = 0; i < 20000; i++) { | |
68 m1(b, b); | |
69 } | |
70 m1(b, o); | |
71 | |
72 // add speculative trap in B.m() for code generated by reflection | |
73 for (int i = 0; i < 20000; i++) { | |
74 m.invoke(b, b); | |
75 } | |
76 m.invoke(b, o); | |
77 | |
78 m = null; | |
79 | |
80 // add speculative trap in B.m() for m2 | |
81 for (int i = 0; i < 20000; i++) { | |
82 m2(b, b); | |
83 } | |
84 m2(b, o); | |
85 | |
86 // Exhaust memory which causes the code generated by | |
87 // reflection to be unloaded but B.m() is not. | |
88 MemoryChunk root = null; | |
89 try { | |
90 while (true) { | |
91 root = new MemoryChunk(root); | |
92 } | |
93 } catch(OutOfMemoryError e) { | |
94 root = null; | |
95 } | |
96 } | |
97 } |