1 /*
2 * Copyright (c) 2014 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.vm.lambda.invoke;
24
25 import org.openjdk.jmh.annotations.Benchmark;
26 import org.openjdk.jmh.annotations.BenchmarkMode;
27 import org.openjdk.jmh.annotations.Level;
28 import org.openjdk.jmh.annotations.Mode;
29 import org.openjdk.jmh.annotations.OperationsPerInvocation;
30 import org.openjdk.jmh.annotations.OutputTimeUnit;
31 import org.openjdk.jmh.annotations.Scope;
32 import org.openjdk.jmh.annotations.Setup;
33 import org.openjdk.jmh.annotations.State;
34 import org.openjdk.jmh.infra.Blackhole;
35
36 import java.util.concurrent.TimeUnit;
37 import java.util.function.IntUnaryOperator;
38
39 /**
40 * evaluates N-morphic invocation costs.
41 * the same lambda capture different variables
42 * @author Sergey Kuksenko (sergey.kuksenko@oracle.com)
43 */
44 @BenchmarkMode(Mode.AverageTime)
45 @OutputTimeUnit(TimeUnit.NANOSECONDS)
46 @State(Scope.Thread)
47 public class Morph2 {
48
49
50 private static final int LIMIT = 16536;
51 private static final int OPS = 4;
52 private static final int OPERATIONS = OPS*LIMIT;
53
54 // <source of functional interface>_N; where N - how many different targets
55 private IntUnaryOperator[] inner_1;
56 private IntUnaryOperator[] inner_2;
57 private IntUnaryOperator[] inner_4;
58
59 private IntUnaryOperator[] lambda_1;
60 private IntUnaryOperator[] lambda_2;
61 private IntUnaryOperator[] lambda_4;
62
63 @Setup(Level.Trial)
64 public void setup() {
65 setup_inner(1,2,3,4);
66 setup_lambda(1,2,3,4);
67 }
68
69 private void setup_inner(int a, int b, int c, int d) {
70 inner_4 = new IntUnaryOperator[] {
71 makeInner(a),
72 makeInner(b),
73 makeInner(c),
74 makeInner(d),
75 };
76 inner_2 = new IntUnaryOperator[] { inner_4[0], inner_4[1], inner_4[0], inner_4[1], };
77 inner_1 = new IntUnaryOperator[] { inner_4[0], inner_4[0], inner_4[0], inner_4[0], };
78 }
79
80 private IntUnaryOperator makeInner(final int a) {
81 return new IntUnaryOperator() {
82 @Override
83 public int applyAsInt(int x) {
84 return x + a;
85 }
86 };
87 }
88
89 private void setup_lambda(int a, int b, int c, int d) {
90 lambda_4 = new IntUnaryOperator[] {
91 makeLambda(a),
92 makeLambda(b),
93 makeLambda(c),
94 makeLambda(d),
95 };
96 lambda_2 = new IntUnaryOperator[] { lambda_4[0], lambda_4[1], lambda_4[0], lambda_4[1], };
97 lambda_1 = new IntUnaryOperator[] { lambda_4[0], lambda_4[0], lambda_4[0], lambda_4[0], };
98 }
99
100 private IntUnaryOperator makeLambda(int a) {
101 return x -> x + a;
102 }
103
104 public void process(Blackhole bh, IntUnaryOperator[] operations) {
105 for (int i = 0; i < LIMIT; i++) {
106 for (IntUnaryOperator op : operations) {
107 bh.consume(op.applyAsInt(i));
108 }
109 }
110 }
111
112 @Benchmark
113 @OperationsPerInvocation(OPERATIONS)
114 public void inner1(Blackhole bh) {
115 process(bh, inner_1);
116 }
117
118 @Benchmark
119 @OperationsPerInvocation(OPERATIONS)
120 public void inner2(Blackhole bh) {
121 process(bh, inner_2);
122 }
123
124 @Benchmark
125 @OperationsPerInvocation(OPERATIONS)
126 public void inner4(Blackhole bh) {
127 process(bh, inner_4);
128 }
129
130 @Benchmark
131 @OperationsPerInvocation(OPERATIONS)
132 public void lambda1(Blackhole bh) {
133 process(bh, lambda_1);
134 }
135
136 @Benchmark
137 @OperationsPerInvocation(OPERATIONS)
138 public void lambda2(Blackhole bh) {
139 process(bh, lambda_2);
140 }
141
142 @Benchmark
143 @OperationsPerInvocation(OPERATIONS)
144 public void lambda4(Blackhole bh) {
145 process(bh, lambda_4);
146 }
147
148 }
149