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. Oracle designates this |
|
8 * particular file as subject to the "Classpath" exception as provided |
|
9 * by Oracle in the LICENSE file that accompanied this code. |
|
10 * |
|
11 * This code is distributed in the hope that it will be useful, but WITHOUT |
|
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
14 * version 2 for more details (a copy is included in the LICENSE file that |
|
15 * accompanied this code). |
|
16 * |
|
17 * You should have received a copy of the GNU General Public License version |
|
18 * 2 along with this work; if not, write to the Free Software Foundation, |
|
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
|
20 * |
|
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
22 * or visit www.oracle.com if you need additional information or have any |
|
23 * questions. |
|
24 */ |
|
25 package org.openjdk.micro.jdk.java.util.zip; |
|
26 |
|
27 import java.nio.ByteBuffer; |
|
28 import java.nio.charset.StandardCharsets; |
|
29 import java.util.Random; |
|
30 import java.util.concurrent.TimeUnit; |
|
31 import java.util.zip.Checksum; |
|
32 import org.openjdk.jmh.annotations.Benchmark; |
|
33 import org.openjdk.jmh.annotations.OperationsPerInvocation; |
|
34 import org.openjdk.jmh.annotations.OutputTimeUnit; |
|
35 import org.openjdk.jmh.annotations.Scope; |
|
36 import org.openjdk.jmh.annotations.Setup; |
|
37 import org.openjdk.jmh.annotations.State; |
|
38 |
|
39 /** |
|
40 * |
|
41 * Base class for benchmarking JDK supported Checksums. |
|
42 * |
|
43 * To use the base class extend it and use a setup method configure the checksum |
|
44 * field. |
|
45 * |
|
46 */ |
|
47 @State(Scope.Thread) |
|
48 @OutputTimeUnit(TimeUnit.MILLISECONDS) |
|
49 public abstract class ChecksumBenchmarks { |
|
50 |
|
51 private final byte[] bytes_1to9 = "123456789".getBytes(StandardCharsets.US_ASCII); |
|
52 private final byte[] byteArray_1k = new byte[1024]; |
|
53 private final byte[] byteArray_64k = new byte[65536]; |
|
54 private final ByteBuffer wrappedByteBuffer_1k = ByteBuffer.wrap(byteArray_1k); |
|
55 private final ByteBuffer readonlyByteBuffer_1k = ByteBuffer.wrap(byteArray_1k).asReadOnlyBuffer(); |
|
56 private final ByteBuffer directByteBuffer_1k = ByteBuffer.allocateDirect(byteArray_1k.length); |
|
57 private final ByteBuffer wrappedByteBuffer_64k = ByteBuffer.wrap(byteArray_64k); |
|
58 private final ByteBuffer readonlyByteBuffer_64k = ByteBuffer.wrap(byteArray_64k).asReadOnlyBuffer(); |
|
59 private final ByteBuffer directByteBuffer_64k = ByteBuffer.allocateDirect(byteArray_64k.length); |
|
60 |
|
61 @Setup |
|
62 final public void setup() { |
|
63 Random r = new Random(123456789L); |
|
64 r.nextBytes(byteArray_1k); |
|
65 r.nextBytes(byteArray_64k); |
|
66 directByteBuffer_1k.put(byteArray_1k); |
|
67 directByteBuffer_64k.put(byteArray_64k); |
|
68 } |
|
69 |
|
70 protected Checksum checksum; |
|
71 |
|
72 @Benchmark |
|
73 @OperationsPerInvocation(9) |
|
74 public void byteArray_9() { |
|
75 checksum.update(bytes_1to9); |
|
76 } |
|
77 |
|
78 @Benchmark |
|
79 @OperationsPerInvocation(1024) |
|
80 public void byteArray_1K() { |
|
81 checksum.update(byteArray_1k); |
|
82 } |
|
83 |
|
84 @Benchmark |
|
85 @OperationsPerInvocation(1024) |
|
86 public void wrappedByteBuffer_1K() { |
|
87 wrappedByteBuffer_1k.position(0); |
|
88 checksum.update(wrappedByteBuffer_1k); |
|
89 } |
|
90 |
|
91 @Benchmark |
|
92 @OperationsPerInvocation(1024) |
|
93 public void readonlyByteBuffer_1K() { |
|
94 readonlyByteBuffer_1k.position(0); |
|
95 checksum.update(readonlyByteBuffer_1k); |
|
96 } |
|
97 |
|
98 @Benchmark |
|
99 @OperationsPerInvocation(1024) |
|
100 public void directByteBuffer_1K() { |
|
101 directByteBuffer_1k.position(0); |
|
102 checksum.update(directByteBuffer_1k); |
|
103 } |
|
104 |
|
105 @Benchmark |
|
106 @OperationsPerInvocation(65536) |
|
107 public void byteArray_64K() { |
|
108 checksum.update(byteArray_64k); |
|
109 } |
|
110 |
|
111 @Benchmark |
|
112 @OperationsPerInvocation(65536) |
|
113 public void wrappedByteBuffer_64K() { |
|
114 wrappedByteBuffer_64k.position(0); |
|
115 checksum.update(wrappedByteBuffer_64k); |
|
116 } |
|
117 |
|
118 @Benchmark |
|
119 @OperationsPerInvocation(65536) |
|
120 public void readonlyByteBuffer_64K() { |
|
121 readonlyByteBuffer_64k.position(0); |
|
122 checksum.update(readonlyByteBuffer_64k); |
|
123 } |
|
124 |
|
125 @Benchmark |
|
126 @OperationsPerInvocation(65536) |
|
127 public void directByteBuffer_64K() { |
|
128 directByteBuffer_64k.position(0); |
|
129 checksum.update(directByteBuffer_64k); |
|
130 } |
|
131 } |
|