Mercurial > hg > truffle
comparison test/compiler/unsafe/UnsafeRaw.java @ 20497:5c1b5be2c69b hs25.40-b12
Merge
author | amurillo |
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date | Fri, 26 Sep 2014 03:32:25 -0700 |
parents | 50d3433155d9 |
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20486:5dc11309d4c6 | 20497:5c1b5be2c69b |
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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 8058744 | |
27 * @summary Invalid pattern-matching of address computations in raw unsafe | |
28 * @library /testlibrary | |
29 * @run main/othervm -Xbatch UnsafeRaw | |
30 */ | |
31 | |
32 import com.oracle.java.testlibrary.Utils; | |
33 import java.util.Random; | |
34 | |
35 public class UnsafeRaw { | |
36 public static class Tests { | |
37 public static int int_index(sun.misc.Unsafe unsafe, long base, int index) throws Exception { | |
38 return unsafe.getInt(base + (index << 2)); | |
39 } | |
40 public static int long_index(sun.misc.Unsafe unsafe, long base, long index) throws Exception { | |
41 return unsafe.getInt(base + (index << 2)); | |
42 } | |
43 public static int int_index_back_ashift(sun.misc.Unsafe unsafe, long base, int index) throws Exception { | |
44 return unsafe.getInt(base + (index >> 2)); | |
45 } | |
46 public static int int_index_back_lshift(sun.misc.Unsafe unsafe, long base, int index) throws Exception { | |
47 return unsafe.getInt(base + (index >>> 2)); | |
48 } | |
49 public static int long_index_back_ashift(sun.misc.Unsafe unsafe, long base, long index) throws Exception { | |
50 return unsafe.getInt(base + (index >> 2)); | |
51 } | |
52 public static int long_index_back_lshift(sun.misc.Unsafe unsafe, long base, long index) throws Exception { | |
53 return unsafe.getInt(base + (index >>> 2)); | |
54 } | |
55 public static int int_const_12345678_index(sun.misc.Unsafe unsafe, long base) throws Exception { | |
56 int idx4 = 0x12345678; | |
57 return unsafe.getInt(base + idx4); | |
58 } | |
59 public static int long_const_1234567890abcdef_index(sun.misc.Unsafe unsafe, long base) throws Exception { | |
60 long idx5 = 0x1234567890abcdefL; | |
61 return unsafe.getInt(base + idx5); | |
62 } | |
63 public static int int_index_mul(sun.misc.Unsafe unsafe, long base, int index) throws Exception { | |
64 return unsafe.getInt(base + (index * 4)); | |
65 } | |
66 public static int long_index_mul(sun.misc.Unsafe unsafe, long base, long index) throws Exception { | |
67 return unsafe.getInt(base + (index * 4)); | |
68 } | |
69 public static int int_index_mul_scale_16(sun.misc.Unsafe unsafe, long base, int index) throws Exception { | |
70 return unsafe.getInt(base + (index * 16)); | |
71 } | |
72 public static int long_index_mul_scale_16(sun.misc.Unsafe unsafe, long base, long index) throws Exception { | |
73 return unsafe.getInt(base + (index * 16)); | |
74 } | |
75 } | |
76 | |
77 public static void main(String[] args) throws Exception { | |
78 sun.misc.Unsafe unsafe = Utils.getUnsafe(); | |
79 final int array_size = 128; | |
80 final int element_size = 4; | |
81 final int magic = 0x12345678; | |
82 | |
83 Random rnd = new Random(); | |
84 | |
85 long array = unsafe.allocateMemory(array_size * element_size); // 128 ints | |
86 long addr = array + array_size * element_size / 2; // something in the middle to work with | |
87 unsafe.putInt(addr, magic); | |
88 for (int j = 0; j < 100000; j++) { | |
89 if (Tests.int_index(unsafe, addr, 0) != magic) throw new Exception(); | |
90 if (Tests.long_index(unsafe, addr, 0) != magic) throw new Exception(); | |
91 if (Tests.int_index_mul(unsafe, addr, 0) != magic) throw new Exception(); | |
92 if (Tests.long_index_mul(unsafe, addr, 0) != magic) throw new Exception(); | |
93 { | |
94 long idx1 = rnd.nextLong(); | |
95 long addr1 = addr - (idx1 << 2); | |
96 if (Tests.long_index(unsafe, addr1, idx1) != magic) throw new Exception(); | |
97 } | |
98 { | |
99 long idx2 = rnd.nextLong(); | |
100 long addr2 = addr - (idx2 >> 2); | |
101 if (Tests.long_index_back_ashift(unsafe, addr2, idx2) != magic) throw new Exception(); | |
102 } | |
103 { | |
104 long idx3 = rnd.nextLong(); | |
105 long addr3 = addr - (idx3 >>> 2); | |
106 if (Tests.long_index_back_lshift(unsafe, addr3, idx3) != magic) throw new Exception(); | |
107 } | |
108 { | |
109 long idx4 = 0x12345678; | |
110 long addr4 = addr - idx4; | |
111 if (Tests.int_const_12345678_index(unsafe, addr4) != magic) throw new Exception(); | |
112 } | |
113 { | |
114 long idx5 = 0x1234567890abcdefL; | |
115 long addr5 = addr - idx5; | |
116 if (Tests.long_const_1234567890abcdef_index(unsafe, addr5) != magic) throw new Exception(); | |
117 } | |
118 { | |
119 int idx6 = rnd.nextInt(); | |
120 long addr6 = addr - (idx6 >> 2); | |
121 if (Tests.int_index_back_ashift(unsafe, addr6, idx6) != magic) throw new Exception(); | |
122 } | |
123 { | |
124 int idx7 = rnd.nextInt(); | |
125 long addr7 = addr - (idx7 >>> 2); | |
126 if (Tests.int_index_back_lshift(unsafe, addr7, idx7) != magic) throw new Exception(); | |
127 } | |
128 { | |
129 int idx8 = rnd.nextInt(); | |
130 long addr8 = addr - (idx8 * 16); | |
131 if (Tests.int_index_mul_scale_16(unsafe, addr8, idx8) != magic) throw new Exception(); | |
132 } | |
133 { | |
134 long idx9 = rnd.nextLong(); | |
135 long addr9 = addr - (idx9 * 16); | |
136 if (Tests.long_index_mul_scale_16(unsafe, addr9, idx9) != magic) throw new Exception(); | |
137 } | |
138 } | |
139 } | |
140 } |