1 /*
2 * Copyright (c) 2011, 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 7109837
27 * @summary Test Adler32/CRC32.update(ByteBuffer)
28 * @key randomness
29 */
30
31 import java.util.*;
32 import java.util.zip.*;
33 import java.nio.*;
34
35 public class TimeChecksum {
36
37 static long time(Adler32 adler32, byte[] data, int iters, int len) {
38 long start_t = System.nanoTime();
39 for (int i = 0; i < iters; i++) {
40 adler32.reset();
41 adler32.update(data, 0, len);
42 }
43 long t = System.nanoTime() - start_t;
44 System.out.printf("%,12d", t / len);
45 return t;
46 }
47
48 static long time(Adler32 adler32, ByteBuffer buf, int iters) {
49 long start_t = System.nanoTime();
50 for (int i = 0; i < iters; i++) {
51 adler32.reset();
52 buf.mark();
53 adler32.update(buf);
54 buf.reset();
55 }
56 long t = System.nanoTime() - start_t;
57 System.out.printf("%,12d", t / buf.remaining());
58 return t;
59 }
60
61 static void testPosLimit(Adler32 adler32, ByteBuffer buf) {
62 int pos = buf.position();
63 int limit = buf.limit();
64 adler32.update(buf);
65 if (limit != buf.position() || limit != buf.limit()) {
66 System.out.printf("%nFAILED: pos,limit=(%d, %d), expected (%d, %d)%n",
67 buf.position(), buf.limit(), limit, limit);
68 throw new RuntimeException();
69 }
70 buf.position(pos);
71 }
72
73 static long time(CRC32 crc32, byte[] data, int iters, int len) {
74 long start_t = System.nanoTime();
75 for (int i = 0; i < iters; i++) {
76 crc32.reset();
77 crc32.update(data, 0, len);
78 }
79 long t = System.nanoTime() - start_t;
80 System.out.printf("%,12d", t / len);
81 return t;
82 }
83
84 static long time(CRC32 crc32, ByteBuffer buf, int iters) {
85 long start_t = System.nanoTime();
86 for (int i = 0; i < iters; i++) {
87 crc32.reset();
88 buf.mark();
89 crc32.update(buf);
90 buf.reset();
91 }
92 long t = System.nanoTime() - start_t;
93 System.out.printf("%,12d", t / buf.remaining());
94 return t;
95 }
96
97 static void testPosLimit(CRC32 crc32, ByteBuffer buf) {
98 int pos = buf.position();
99 int limit = buf.limit();
100 crc32.update(buf);
101 if (limit != buf.position() || limit != buf.limit()) {
102 System.out.printf("%nFAILED: pos,limit=(%d, %d), expected (%d, %d)%n",
103 buf.position(), buf.limit(), limit, limit);
104 throw new RuntimeException();
105 }
106 buf.position(pos);
107 }
108
109 public static void main(String[] args) {
110 int len = 1024 * 32;
111 int iters = 1;
112 if (args.length != 0 && "-benchmark".equals(args[0]))
113 iters = 100000;
114 Adler32 adler32 = new Adler32();
115 CRC32 crc32 = new CRC32();
116 Random rdm = new Random();
117 byte[] data = new byte[len];
118 new Random().nextBytes(data);
119 ByteBuffer buf;
120
121 System.out.println("---------- Adler32 ----------");
122 System.out.print("Warmup...");
123 time(adler32, data, iters, len);
124 time(adler32, ByteBuffer.wrap(data), iters);
125 buf = ByteBuffer.allocateDirect(len);
126 buf.put(data, 0, len);
127 buf.flip();
128 time(adler32, buf, iters);
129 System.out.println("\n");
130
131 System.out.println("Length byte[](ns/len) ByteBuffer(direct) ByteBuffer");
132 for (int testlen = 1; testlen < data.length; testlen <<= 1) {
133 System.out.print(testlen + "\t");
134 long baT = time(adler32, data, iters, testlen);
135 long baV = adler32.getValue();
136 System.out.print("\t");
137
138 buf = ByteBuffer.allocateDirect(testlen);
139 buf.put(data, 0, testlen);
140 buf.flip();
141 long bbdT = time(adler32, buf, iters);
142 long bbdV = adler32.getValue();
143 if (baV != bbdV) {
144 System.out.printf("%nFAILED: baV=%x,bbdV=%x%n", baV, bbdV);
145 throw new RuntimeException();
146 }
147 System.out.printf(" (%.2f)", (float)bbdT/baT);
148 testPosLimit(adler32, buf);
149
150 buf = ByteBuffer.allocate(testlen);
151 buf.put(data, 0, testlen);
152 buf.flip();
153 long bbT = time(adler32, buf, iters);
154 long bbV = adler32.getValue();
155 if (baV != bbV) {
156 System.out.printf("%nFAILED: baV=%x,bbV=%x%n", baV, bbV);
157 throw new RuntimeException();
158 }
159 testPosLimit(adler32, buf);
160 System.out.printf(" (%.2f) checksum=%x%n", (float)bbT/baT, bbV);
161 }
162
163 System.out.println("\n---------- CRC32 ----------");
164 System.out.print("Warmup...");
165 time(crc32, data, iters, len);
166 time(crc32, ByteBuffer.wrap(data), iters);
167 buf = ByteBuffer.allocateDirect(len);
168 buf.put(data, 0, len);
169 buf.flip();
170 time(crc32, buf, iters);
171 System.out.println("\n");
172
173
174 System.out.println("Length byte[](ns/len) ByteBuffer(direct) ByteBuffer");
175 for (int testlen = 1; testlen < data.length; testlen <<= 1) {
176 System.out.print(testlen + "\t");
177 long baT = time(crc32, data, iters, testlen);
178 long baV = crc32.getValue();
179 System.out.print("\t");
180
181 buf = ByteBuffer.allocateDirect(testlen);
182 buf.put(data, 0, testlen);
183 buf.flip();
184 long bbdT = time(crc32, buf, iters);
185 long bbdV = crc32.getValue();
186 if (baV != bbdV) {
187 System.out.printf("%nFAILED: baV=%x,bbdV=%x%n", baV, bbdV);
188 throw new RuntimeException();
189 }
190 System.out.printf(" (%.2f)", (float)bbdT/baT);
191 testPosLimit(crc32, buf);
192
193 buf = ByteBuffer.allocate(testlen);
194 buf.put(data, 0, testlen);
195 buf.flip();
196 long bbT = time(crc32, buf, iters);
197 long bbV = crc32.getValue();
198 if (baV != bbV) {
199 System.out.printf("%nFAILED: baV=%x,bbV=%x%n", baV, bbV);
200 throw new RuntimeException();
201 }
202 testPosLimit(crc32, buf);
203 System.out.printf(" (%.2f) checksum=%x%n", (float)bbT / baT, bbV);
204 }
205 }
206 }