1 /*
2 * Copyright (c) 2020, 2022, 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 package org.openjdk.bench.java.lang.foreign;
24
25 import java.lang.foreign.Arena;
26 import java.lang.foreign.MemorySegment;
27
28 import org.openjdk.jmh.annotations.Benchmark;
29 import org.openjdk.jmh.annotations.BenchmarkMode;
30 import org.openjdk.jmh.annotations.Fork;
31 import org.openjdk.jmh.annotations.Measurement;
32 import org.openjdk.jmh.annotations.Mode;
33 import org.openjdk.jmh.annotations.OutputTimeUnit;
34 import org.openjdk.jmh.annotations.Setup;
35 import org.openjdk.jmh.annotations.State;
36 import org.openjdk.jmh.annotations.TearDown;
37 import org.openjdk.jmh.annotations.Warmup;
38 import sun.misc.Unsafe;
39
40 import java.nio.ByteBuffer;
41 import java.nio.ByteOrder;
42 import java.util.concurrent.TimeUnit;
43
44 import static java.lang.foreign.ValueLayout.JAVA_DOUBLE;
45
46 @BenchmarkMode(Mode.AverageTime)
47 @Warmup(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
48 @Measurement(iterations = 10, time = 500, timeUnit = TimeUnit.MILLISECONDS)
49 @State(org.openjdk.jmh.annotations.Scope.Thread)
50 @OutputTimeUnit(TimeUnit.MILLISECONDS)
51 @Fork(3)
52 public class LoopOverNonConstantFP {
53
54 static final Unsafe unsafe = Utils.unsafe;
55
56 static final int ELEM_SIZE = 1_000_000;
57 static final int CARRIER_SIZE = (int)JAVA_DOUBLE.byteSize();
58 static final int ALLOC_SIZE = ELEM_SIZE * CARRIER_SIZE;
59
60 Arena arena;
61 MemorySegment segmentIn, segmentOut;
62 long unsafe_addrIn, unsafe_addrOut;
63 ByteBuffer byteBufferIn, byteBufferOut;
64
65 @Setup
66 public void setup() {
67 unsafe_addrIn = unsafe.allocateMemory(ALLOC_SIZE);
68 unsafe_addrOut = unsafe.allocateMemory(ALLOC_SIZE);
69 for (int i = 0; i < ELEM_SIZE; i++) {
70 unsafe.putDouble(unsafe_addrIn + (i * CARRIER_SIZE), i);
71 }
72 for (int i = 0; i < ELEM_SIZE; i++) {
73 unsafe.putDouble(unsafe_addrOut + (i * CARRIER_SIZE), i);
74 }
75 arena = Arena.ofConfined();
76 segmentIn = arena.allocate(ALLOC_SIZE, 1);
77 segmentOut = arena.allocate(ALLOC_SIZE, 1);
78 for (int i = 0; i < ELEM_SIZE; i++) {
79 segmentIn.setAtIndex(JAVA_DOUBLE, i, i);
80 }
81 for (int i = 0; i < ELEM_SIZE; i++) {
82 segmentOut.setAtIndex(JAVA_DOUBLE, i, i);
83 }
84 byteBufferIn = ByteBuffer.allocateDirect(ALLOC_SIZE).order(ByteOrder.nativeOrder());
85 byteBufferOut = ByteBuffer.allocateDirect(ALLOC_SIZE).order(ByteOrder.nativeOrder());
86 for (int i = 0; i < ELEM_SIZE; i++) {
87 byteBufferIn.putDouble(i * CARRIER_SIZE , i);
88 }
89 for (int i = 0; i < ELEM_SIZE; i++) {
90 byteBufferOut.putDouble(i * CARRIER_SIZE , i);
91 }
92 }
93
94 @TearDown
95 public void tearDown() {
96 arena.close();
97 unsafe.invokeCleaner(byteBufferIn);
98 unsafe.invokeCleaner(byteBufferOut);
99 unsafe.freeMemory(unsafe_addrIn);
100 unsafe.freeMemory(unsafe_addrOut);
101 }
102
103 @Benchmark
104 public void unsafe_loop() {
105 for (int i = 0; i < ELEM_SIZE; i ++) {
106 unsafe.putDouble(unsafe_addrOut + (i * CARRIER_SIZE),
107 unsafe.getDouble(unsafe_addrIn + (i * CARRIER_SIZE)) +
108 unsafe.getDouble(unsafe_addrOut + (i * CARRIER_SIZE)));
109 }
110 }
111
112 @Benchmark
113 public void segment_loop() {
114 for (int i = 0; i < ELEM_SIZE; i ++) {
115 segmentOut.setAtIndex(JAVA_DOUBLE, i,
116 segmentIn.getAtIndex(JAVA_DOUBLE, i) +
117 segmentOut.getAtIndex(JAVA_DOUBLE, i));
118 }
119 }
120
121 @Benchmark
122 public void BB_loop() {
123 for (int i = 0; i < ELEM_SIZE; i++) {
124 byteBufferOut.putDouble(i * CARRIER_SIZE,
125 byteBufferIn.getDouble(i * CARRIER_SIZE) +
126 byteBufferOut.getDouble(i * CARRIER_SIZE));
127 }
128 }
129 }