Mercurial > hg > truffle
comparison test/compiler/7088419/CRCTest.java @ 11080:b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
Summary: add intrinsics using new instruction to interpreter, C1, C2, for suitable x86; add test
Reviewed-by: kvn, twisti
author | drchase |
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date | Tue, 02 Jul 2013 20:42:12 -0400 |
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11079:738e04fb1232 | 11080:b800986664f4 |
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1 /* | |
2 * Copyright (c) 2013, 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 7088419 | |
27 @run main CRCTest | |
28 @summary Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32 and java.util.zip.Adler32 | |
29 */ | |
30 | |
31 import java.nio.ByteBuffer; | |
32 import java.util.zip.CRC32; | |
33 import java.util.zip.Checksum; | |
34 | |
35 public class CRCTest { | |
36 | |
37 public static void main(String[] args) throws Exception { | |
38 | |
39 byte[] b = initializedBytes(4096 * 4096); | |
40 | |
41 { | |
42 CRC32 crc1 = new CRC32(); | |
43 CRC32 crc2 = new CRC32(); | |
44 CRC32 crc3 = new CRC32(); | |
45 CRC32 crc4 = new CRC32(); | |
46 | |
47 crc1.update(b, 0, b.length); | |
48 updateSerial(crc2, b, 0, b.length); | |
49 updateDirect(crc3, b, 0, b.length); | |
50 updateSerialSlow(crc4, b, 0, b.length); | |
51 | |
52 check(crc1, crc2); | |
53 check(crc3, crc4); | |
54 check(crc1, crc3); | |
55 | |
56 crc1.update(17); | |
57 crc2.update(17); | |
58 crc3.update(17); | |
59 crc4.update(17); | |
60 | |
61 crc1.update(b, 1, b.length-2); | |
62 updateSerial(crc2, b, 1, b.length-2); | |
63 updateDirect(crc3, b, 1, b.length-2); | |
64 updateSerialSlow(crc4, b, 1, b.length-2); | |
65 | |
66 check(crc1, crc2); | |
67 check(crc3, crc4); | |
68 check(crc1, crc3); | |
69 | |
70 report("finished huge crc", crc1, crc2, crc3, crc4); | |
71 | |
72 for (int i = 0; i < 256; i++) { | |
73 for (int j = 0; j < 256; j += 1) { | |
74 crc1.update(b, i, j); | |
75 updateSerial(crc2, b, i, j); | |
76 updateDirect(crc3, b, i, j); | |
77 updateSerialSlow(crc4, b, i, j); | |
78 | |
79 check(crc1, crc2); | |
80 check(crc3, crc4); | |
81 check(crc1, crc3); | |
82 | |
83 } | |
84 } | |
85 | |
86 report("finished small survey crc", crc1, crc2, crc3, crc4); | |
87 } | |
88 | |
89 } | |
90 | |
91 private static void report(String s, Checksum crc1, Checksum crc2, | |
92 Checksum crc3, Checksum crc4) { | |
93 System.out.println(s + ", crc1 = " + crc1.getValue() + | |
94 ", crc2 = " + crc2.getValue()+ | |
95 ", crc3 = " + crc3.getValue()+ | |
96 ", crc4 = " + crc4.getValue()); | |
97 } | |
98 | |
99 private static void check(Checksum crc1, Checksum crc2) throws Exception { | |
100 if (crc1.getValue() != crc2.getValue()) { | |
101 String s = "value 1 = " + crc1.getValue() + ", value 2 = " + crc2.getValue(); | |
102 System.err.println(s); | |
103 throw new Exception(s); | |
104 } | |
105 } | |
106 | |
107 private static byte[] initializedBytes(int M) { | |
108 byte[] bytes = new byte[M]; | |
109 for (int i = 0; i < bytes.length; i++) { | |
110 bytes[i] = (byte) i; | |
111 } | |
112 return bytes; | |
113 } | |
114 | |
115 private static void updateSerial(Checksum crc, byte[] b, int start, int length) { | |
116 for (int i = 0; i < length; i++) | |
117 crc.update(b[i+start]); | |
118 } | |
119 | |
120 private static void updateSerialSlow(Checksum crc, byte[] b, int start, int length) { | |
121 for (int i = 0; i < length; i++) | |
122 crc.update(b[i+start]); | |
123 crc.getValue(); | |
124 } | |
125 | |
126 private static void updateDirect(CRC32 crc3, byte[] b, int start, int length) { | |
127 ByteBuffer buf = ByteBuffer.allocateDirect(length); | |
128 buf.put(b, start, length); | |
129 buf.flip(); | |
130 crc3.update(buf); | |
131 } | |
132 } |