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annotate test/compiler/7088419/CRCTest.java @ 11080:b800986664f4

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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
date Tue, 02 Jul 2013 20:42:12 -0400
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Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
11080
b800986664f4 7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
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1 /*
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2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
b800986664f4 7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
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6 * under the terms of the GNU General Public License version 2 only, as
b800986664f4 7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
b800986664f4 7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
b800986664f4 7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
b800986664f4 7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23
b800986664f4 7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
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24 /*
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25 @test
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26 @bug 7088419
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27 @run main CRCTest
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28 @summary Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32 and java.util.zip.Adler32
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29 */
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30
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31 import java.nio.ByteBuffer;
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32 import java.util.zip.CRC32;
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33 import java.util.zip.Checksum;
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34
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35 public class CRCTest {
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36
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37 public static void main(String[] args) throws Exception {
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38
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39 byte[] b = initializedBytes(4096 * 4096);
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40
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41 {
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42 CRC32 crc1 = new CRC32();
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43 CRC32 crc2 = new CRC32();
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44 CRC32 crc3 = new CRC32();
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45 CRC32 crc4 = new CRC32();
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46
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47 crc1.update(b, 0, b.length);
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48 updateSerial(crc2, b, 0, b.length);
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49 updateDirect(crc3, b, 0, b.length);
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50 updateSerialSlow(crc4, b, 0, b.length);
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51
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52 check(crc1, crc2);
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53 check(crc3, crc4);
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54 check(crc1, crc3);
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55
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56 crc1.update(17);
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57 crc2.update(17);
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58 crc3.update(17);
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59 crc4.update(17);
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60
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61 crc1.update(b, 1, b.length-2);
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62 updateSerial(crc2, b, 1, b.length-2);
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63 updateDirect(crc3, b, 1, b.length-2);
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64 updateSerialSlow(crc4, b, 1, b.length-2);
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65
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66 check(crc1, crc2);
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67 check(crc3, crc4);
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68 check(crc1, crc3);
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69
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70 report("finished huge crc", crc1, crc2, crc3, crc4);
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71
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72 for (int i = 0; i < 256; i++) {
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73 for (int j = 0; j < 256; j += 1) {
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74 crc1.update(b, i, j);
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75 updateSerial(crc2, b, i, j);
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76 updateDirect(crc3, b, i, j);
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77 updateSerialSlow(crc4, b, i, j);
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78
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79 check(crc1, crc2);
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80 check(crc3, crc4);
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81 check(crc1, crc3);
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82
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83 }
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84 }
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85
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86 report("finished small survey crc", crc1, crc2, crc3, crc4);
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87 }
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88
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89 }
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90
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91 private static void report(String s, Checksum crc1, Checksum crc2,
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92 Checksum crc3, Checksum crc4) {
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93 System.out.println(s + ", crc1 = " + crc1.getValue() +
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94 ", crc2 = " + crc2.getValue()+
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95 ", crc3 = " + crc3.getValue()+
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96 ", crc4 = " + crc4.getValue());
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97 }
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98
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99 private static void check(Checksum crc1, Checksum crc2) throws Exception {
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100 if (crc1.getValue() != crc2.getValue()) {
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101 String s = "value 1 = " + crc1.getValue() + ", value 2 = " + crc2.getValue();
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102 System.err.println(s);
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103 throw new Exception(s);
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104 }
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105 }
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106
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107 private static byte[] initializedBytes(int M) {
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108 byte[] bytes = new byte[M];
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109 for (int i = 0; i < bytes.length; i++) {
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110 bytes[i] = (byte) i;
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111 }
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112 return bytes;
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113 }
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114
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115 private static void updateSerial(Checksum crc, byte[] b, int start, int length) {
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116 for (int i = 0; i < length; i++)
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117 crc.update(b[i+start]);
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118 }
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119
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120 private static void updateSerialSlow(Checksum crc, byte[] b, int start, int length) {
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121 for (int i = 0; i < length; i++)
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122 crc.update(b[i+start]);
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123 crc.getValue();
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124 }
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125
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126 private static void updateDirect(CRC32 crc3, byte[] b, int start, int length) {
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127 ByteBuffer buf = ByteBuffer.allocateDirect(length);
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128 buf.put(b, start, length);
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129 buf.flip();
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130 crc3.update(buf);
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131 }
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132 }