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. 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.bench.vm.lambda.invoke;
26
27 import org.openjdk.jmh.annotations.Benchmark;
28 import org.openjdk.jmh.annotations.BenchmarkMode;
29 import org.openjdk.jmh.annotations.Level;
30 import org.openjdk.jmh.annotations.Mode;
31 import org.openjdk.jmh.annotations.OperationsPerInvocation;
32 import org.openjdk.jmh.annotations.OutputTimeUnit;
33 import org.openjdk.jmh.annotations.Scope;
34 import org.openjdk.jmh.annotations.Setup;
35 import org.openjdk.jmh.annotations.State;
36 import org.openjdk.jmh.infra.Blackhole;
37
38 import java.util.concurrent.TimeUnit;
39 import java.util.function.IntUnaryOperator;
40
41 /**
42 * evaluates N-morphic invocation costs.
43 * the same lambda capture different variables
44 * @author Sergey Kuksenko (sergey.kuksenko@oracle.com)
45 */
46 @BenchmarkMode(Mode.AverageTime)
47 @OutputTimeUnit(TimeUnit.NANOSECONDS)
48 @State(Scope.Thread)
49 public class Morph2 {
50
51
52 private static final int LIMIT = 16536;
53 private static final int OPS = 4;
54 private static final int OPERATIONS = OPS*LIMIT;
55
56 // <source of functional interface>_N; where N - how many different targets
57 private IntUnaryOperator[] inner_1;
58 private IntUnaryOperator[] inner_2;
59 private IntUnaryOperator[] inner_4;
60
61 private IntUnaryOperator[] lambda_1;
62 private IntUnaryOperator[] lambda_2;
63 private IntUnaryOperator[] lambda_4;
64
65 @Setup(Level.Trial)
66 public void setup() {
67 setup_inner(1,2,3,4);
68 setup_lambda(1,2,3,4);
69 }
70
71 private void setup_inner(int a, int b, int c, int d) {
72 inner_4 = new IntUnaryOperator[] {
73 makeInner(a),
74 makeInner(b),
75 makeInner(c),
76 makeInner(d),
77 };
78 inner_2 = new IntUnaryOperator[] { inner_4[0], inner_4[1], inner_4[0], inner_4[1], };
79 inner_1 = new IntUnaryOperator[] { inner_4[0], inner_4[0], inner_4[0], inner_4[0], };
80 }
81
82 private IntUnaryOperator makeInner(final int a) {
83 return new IntUnaryOperator() {
84 @Override
85 public int applyAsInt(int x) {
86 return x + a;
87 }
88 };
89 }
90
91 private void setup_lambda(int a, int b, int c, int d) {
92 lambda_4 = new IntUnaryOperator[] {
93 makeLambda(a),
94 makeLambda(b),
95 makeLambda(c),
96 makeLambda(d),
97 };
98 lambda_2 = new IntUnaryOperator[] { lambda_4[0], lambda_4[1], lambda_4[0], lambda_4[1], };
99 lambda_1 = new IntUnaryOperator[] { lambda_4[0], lambda_4[0], lambda_4[0], lambda_4[0], };
100 }
101
102 private IntUnaryOperator makeLambda(int a) {
103 return x -> x + a;
104 }
105
106 public void process(Blackhole bh, IntUnaryOperator[] operations) {
107 for (int i = 0; i < LIMIT; i++) {
108 for (IntUnaryOperator op : operations) {
109 bh.consume(op.applyAsInt(i));
110 }
111 }
112 }
113
114 @Benchmark
115 @OperationsPerInvocation(OPERATIONS)
116 public void inner1(Blackhole bh) {
117 process(bh, inner_1);
118 }
119
120 @Benchmark
121 @OperationsPerInvocation(OPERATIONS)
122 public void inner2(Blackhole bh) {
123 process(bh, inner_2);
124 }
125
126 @Benchmark
127 @OperationsPerInvocation(OPERATIONS)
128 public void inner4(Blackhole bh) {
129 process(bh, inner_4);
130 }
131
132 @Benchmark
133 @OperationsPerInvocation(OPERATIONS)
134 public void lambda1(Blackhole bh) {
135 process(bh, lambda_1);
136 }
137
138 @Benchmark
139 @OperationsPerInvocation(OPERATIONS)
140 public void lambda2(Blackhole bh) {
141 process(bh, lambda_2);
142 }
143
144 @Benchmark
145 @OperationsPerInvocation(OPERATIONS)
146 public void lambda4(Blackhole bh) {
147 process(bh, lambda_4);
148 }
149
150 }
151