1 /*
2 * Copyright (c) 2020, 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 package org.openjdk.bench.jdk.incubator.foreign;
26
27 import org.openjdk.jmh.annotations.Benchmark;
28 import org.openjdk.jmh.annotations.BenchmarkMode;
29 import org.openjdk.jmh.annotations.Fork;
30 import org.openjdk.jmh.annotations.Measurement;
31 import org.openjdk.jmh.annotations.Mode;
32 import org.openjdk.jmh.annotations.OutputTimeUnit;
33 import org.openjdk.jmh.annotations.State;
34 import org.openjdk.jmh.annotations.Warmup;
35 import sun.misc.Unsafe;
36
37 import jdk.incubator.foreign.MemorySegment;
38 import java.nio.ByteBuffer;
39 import java.util.concurrent.TimeUnit;
40
41 import static jdk.incubator.foreign.MemoryLayouts.JAVA_INT;
42
43 @BenchmarkMode(Mode.AverageTime)
44 @Warmup(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
45 @Measurement(iterations = 10, time = 500, timeUnit = TimeUnit.MILLISECONDS)
46 @State(org.openjdk.jmh.annotations.Scope.Thread)
47 @OutputTimeUnit(TimeUnit.MILLISECONDS)
48 @Fork(3)
49 public class BulkOps {
50
51 static final Unsafe unsafe = Utils.unsafe;
52
53 static final int ELEM_SIZE = 1_000_000;
54 static final int CARRIER_SIZE = (int)JAVA_INT.byteSize();
55 static final int ALLOC_SIZE = ELEM_SIZE * CARRIER_SIZE;
56
57 static final long unsafe_addr = unsafe.allocateMemory(ALLOC_SIZE);
58 static final MemorySegment segment = MemorySegment.allocateNative(ALLOC_SIZE);
59
60 static final int[] bytes = new int[ELEM_SIZE];
61 static final MemorySegment bytesSegment = MemorySegment.ofArray(bytes);
62 static final int UNSAFE_INT_OFFSET = unsafe.arrayBaseOffset(int[].class);
63
64 // large(ish) segments/buffers with same content, 0, for mismatch, non-multiple-of-8 sized
65 static final int SIZE_WITH_TAIL = ALLOC_SIZE + 7;
66 static final MemorySegment mismatchSegmentLarge1 = MemorySegment.allocateNative(SIZE_WITH_TAIL);
67 static final MemorySegment mismatchSegmentLarge2 = MemorySegment.allocateNative(SIZE_WITH_TAIL);
68 static final ByteBuffer mismatchBufferLarge1 = ByteBuffer.allocateDirect(SIZE_WITH_TAIL);
69 static final ByteBuffer mismatchBufferLarge2 = ByteBuffer.allocateDirect(SIZE_WITH_TAIL);
70
71 // mismatch at first byte
72 static final MemorySegment mismatchSegmentSmall1 = MemorySegment.allocateNative(7);
73 static final MemorySegment mismatchSegmentSmall2 = MemorySegment.allocateNative(7);
74 static final ByteBuffer mismatchBufferSmall1 = ByteBuffer.allocateDirect(7);
75 static final ByteBuffer mismatchBufferSmall2 = ByteBuffer.allocateDirect(7);
76 static {
77 mismatchSegmentSmall1.fill((byte) 0xFF);
78 mismatchBufferSmall1.put((byte) 0xFF).clear();
79 // verify expected mismatch indices
80 long si = mismatchSegmentLarge1.mismatch(mismatchSegmentLarge2);
81 if (si != -1)
82 throw new AssertionError("Unexpected mismatch index:" + si);
83 int bi = mismatchBufferLarge1.mismatch(mismatchBufferLarge2);
84 if (bi != -1)
85 throw new AssertionError("Unexpected mismatch index:" + bi);
86 si = mismatchSegmentSmall1.mismatch(mismatchSegmentSmall2);
87 if (si != 0)
88 throw new AssertionError("Unexpected mismatch index:" + si);
89 bi = mismatchBufferSmall1.mismatch(mismatchBufferSmall2);
90 if (bi != 0)
91 throw new AssertionError("Unexpected mismatch index:" + bi);
92 }
93
94 static {
95 for (int i = 0 ; i < bytes.length ; i++) {
96 bytes[i] = i;
97 }
98 }
99
100 @Benchmark
101 @OutputTimeUnit(TimeUnit.NANOSECONDS)
102 public void unsafe_fill() {
103 unsafe.setMemory(unsafe_addr, ALLOC_SIZE, (byte)42);
104 }
105
106 @Benchmark
107 @OutputTimeUnit(TimeUnit.NANOSECONDS)
108 public void segment_fill() {
109 segment.fill((byte)42);
110 }
111
112 @Benchmark
113 @OutputTimeUnit(TimeUnit.NANOSECONDS)
114 public void unsafe_copy() {
115 unsafe.copyMemory(bytes, UNSAFE_INT_OFFSET, null, unsafe_addr, ALLOC_SIZE);
116 }
117
118 @Benchmark
119 @OutputTimeUnit(TimeUnit.NANOSECONDS)
120 public void segment_copy() {
121 segment.copyFrom(bytesSegment);
122 }
123
124 @Benchmark
125 @OutputTimeUnit(TimeUnit.NANOSECONDS)
126 public long mismatch_large_segment() {
127 return mismatchSegmentLarge1.mismatch(mismatchSegmentLarge2);
128 }
129
130 @Benchmark
131 @OutputTimeUnit(TimeUnit.NANOSECONDS)
132 public int mismatch_large_bytebuffer() {
133 return mismatchBufferLarge1.mismatch(mismatchBufferLarge2);
134 }
135
136 @Benchmark
137 @OutputTimeUnit(TimeUnit.NANOSECONDS)
138 public long mismatch_small_segment() {
139 return mismatchSegmentSmall1.mismatch(mismatchSegmentSmall2);
140 }
141
142 @Benchmark
143 @OutputTimeUnit(TimeUnit.NANOSECONDS)
144 public int mismatch_small_bytebuffer() {
145 return mismatchBufferSmall1.mismatch(mismatchBufferSmall2);
146 }
147 }