1 /*
2 * Copyright (c) 2015, 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 8073583
27 * @summary C2 support for CRC32C on SPARC
28 *
29 * @run main/othervm/timeout=600 -Xbatch compiler.intrinsics.zip.TestCRC32C -m
30 */
31
32 package compiler.intrinsics.zip;
33
34 import java.nio.ByteBuffer;
35 import java.util.zip.CRC32C;
36 import java.util.zip.Checksum;
37
38 public class TestCRC32C {
39 public static void main(String[] args) {
40 int offset = Integer.getInteger("offset", 0);
41 int msgSize = Integer.getInteger("msgSize", 512);
42 boolean multi = false;
43 int iters = 20000;
44 int warmupIters = 20000;
45
46 if (args.length > 0) {
47 if (args[0].equals("-m")) {
48 multi = true;
49 } else {
50 iters = Integer.valueOf(args[0]);
51 }
52 if (args.length > 1) {
53 warmupIters = Integer.valueOf(args[1]);
54 }
55 }
56
57 if (multi) {
58 test_multi(warmupIters);
59 return;
60 }
61
62 System.out.println(" offset = " + offset);
63 System.out.println("msgSize = " + msgSize + " bytes");
64 System.out.println(" iters = " + iters);
65
66 byte[] b = initializedBytes(msgSize, offset);
67
68 CRC32C crc0 = new CRC32C();
69 CRC32C crc1 = new CRC32C();
70 CRC32C crc2 = new CRC32C();
71
72 crc0.update(b, offset, msgSize);
73
74 System.out.println("-------------------------------------------------------");
75
76 /* warm up */
77 for (int i = 0; i < warmupIters; i++) {
78 crc1.reset();
79 crc1.update(b, offset, msgSize);
80 }
81
82 /* measure performance */
83 long start = System.nanoTime();
84 for (int i = 0; i < iters; i++) {
85 crc1.reset();
86 crc1.update(b, offset, msgSize);
87 }
88 long end = System.nanoTime();
89 double total = (double)(end - start)/1e9; // in seconds
90 double thruput = (double)msgSize*iters/1e6/total; // in MB/s
91 System.out.println("CRC32C.update(byte[]) runtime = " + total + " seconds");
92 System.out.println("CRC32C.update(byte[]) throughput = " + thruput + " MB/s");
93
94 /* check correctness */
95 for (int i = 0; i < iters; i++) {
96 crc1.reset();
97 crc1.update(b, offset, msgSize);
98 if (!check(crc0, crc1)) break;
99 }
100 report("CRCs", crc0, crc1);
101
102 System.out.println("-------------------------------------------------------");
103
104 ByteBuffer buf = ByteBuffer.allocateDirect(msgSize);
105 buf.put(b, offset, msgSize);
106 buf.flip();
107
108 /* warm up */
109 for (int i = 0; i < warmupIters; i++) {
110 crc2.reset();
111 crc2.update(buf);
112 buf.rewind();
113 }
114
115 /* measure performance */
116 start = System.nanoTime();
117 for (int i = 0; i < iters; i++) {
118 crc2.reset();
119 crc2.update(buf);
120 buf.rewind();
121 }
122 end = System.nanoTime();
123 total = (double)(end - start)/1e9; // in seconds
124 thruput = (double)msgSize*iters/1e6/total; // in MB/s
125 System.out.println("CRC32C.update(ByteBuffer) runtime = " + total + " seconds");
126 System.out.println("CRC32C.update(ByteBuffer) throughput = " + thruput + " MB/s");
127
128 /* check correctness */
129 for (int i = 0; i < iters; i++) {
130 crc2.reset();
131 crc2.update(buf);
132 buf.rewind();
133 if (!check(crc0, crc2)) break;
134 }
135 report("CRCs", crc0, crc2);
136
137 System.out.println("-------------------------------------------------------");
138 }
139
140 private static void report(String s, Checksum crc0, Checksum crc1) {
141 System.out.printf("%s: crc0 = %08x, crc1 = %08x\n",
142 s, crc0.getValue(), crc1.getValue());
143 }
144
145 private static boolean check(Checksum crc0, Checksum crc1) {
146 if (crc0.getValue() != crc1.getValue()) {
147 System.err.printf("ERROR: crc0 = %08x, crc1 = %08x\n",
148 crc0.getValue(), crc1.getValue());
149 return false;
150 }
151 return true;
152 }
153
154 private static byte[] initializedBytes(int M, int offset) {
155 byte[] bytes = new byte[M + offset];
156 for (int i = 0; i < offset; i++) {
157 bytes[i] = (byte) i;
158 }
159 for (int i = offset; i < bytes.length; i++) {
160 bytes[i] = (byte) (i - offset);
161 }
162 return bytes;
163 }
164
165 private static void test_multi(int iters) {
166 int len1 = 8; // the 8B/iteration loop
167 int len2 = 32; // the 32B/iteration loop
168 int len3 = 4096; // the 4KB/iteration loop
169
170 byte[] b = initializedBytes(len3*16, 0);
171 int[] offsets = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 16, 32, 64, 128, 256, 512 };
172 int[] sizes = { 0, 1, 2, 3, 4, 5, 6, 7,
173 len1, len1+1, len1+2, len1+3, len1+4, len1+5, len1+6, len1+7,
174 len1*2, len1*2+1, len1*2+3, len1*2+5, len1*2+7,
175 len2, len2+1, len2+3, len2+5, len2+7,
176 len2*2, len2*4, len2*8, len2*16, len2*32, len2*64,
177 len3, len3+1, len3+3, len3+5, len3+7,
178 len3*2, len3*4, len3*8,
179 len1+len2, len1+len2+1, len1+len2+3, len1+len2+5, len1+len2+7,
180 len1+len3, len1+len3+1, len1+len3+3, len1+len3+5, len1+len3+7,
181 len2+len3, len2+len3+1, len2+len3+3, len2+len3+5, len2+len3+7,
182 len1+len2+len3, len1+len2+len3+1, len1+len2+len3+3,
183 len1+len2+len3+5, len1+len2+len3+7,
184 (len1+len2+len3)*2, (len1+len2+len3)*2+1, (len1+len2+len3)*2+3,
185 (len1+len2+len3)*2+5, (len1+len2+len3)*2+7,
186 (len1+len2+len3)*3, (len1+len2+len3)*3-1, (len1+len2+len3)*3-3,
187 (len1+len2+len3)*3-5, (len1+len2+len3)*3-7 };
188 CRC32C[] crc0 = new CRC32C[offsets.length*sizes.length];
189 CRC32C[] crc1 = new CRC32C[offsets.length*sizes.length];
190 int i, j, k;
191
192 System.out.printf("testing %d cases ...\n", offsets.length*sizes.length);
193
194 /* set the result from interpreter as reference */
195 for (i = 0; i < offsets.length; i++) {
196 for (j = 0; j < sizes.length; j++) {
197 crc0[i*sizes.length + j] = new CRC32C();
198 crc1[i*sizes.length + j] = new CRC32C();
199 crc0[i*sizes.length + j].update(b, offsets[i], sizes[j]);
200 }
201 }
202
203 /* warm up the JIT compiler and get result */
204 for (k = 0; k < iters; k++) {
205 for (i = 0; i < offsets.length; i++) {
206 for (j = 0; j < sizes.length; j++) {
207 crc1[i*sizes.length + j].reset();
208 crc1[i*sizes.length + j].update(b, offsets[i], sizes[j]);
209 }
210 }
211 }
212
213 /* check correctness */
214 for (i = 0; i < offsets.length; i++) {
215 for (j = 0; j < sizes.length; j++) {
216 if (!check(crc0[i*sizes.length + j], crc1[i*sizes.length + j])) {
217 System.out.printf("offsets[%d] = %d", i, offsets[i]);
218 System.out.printf("\tsizes[%d] = %d\n", j, sizes[j]);
219 }
220 }
221 }
222 }
223 }