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.chain; 26 import org.openjdk.jmh.annotations.Benchmark; 27 import org.openjdk.jmh.annotations.BenchmarkMode; 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 38 /** 39 * Chain of (capture + invocation) microbenchmark. 40 */ 41 @State(Scope.Benchmark) 42 @BenchmarkMode(Mode.AverageTime) 43 @OutputTimeUnit(TimeUnit.NANOSECONDS) 44 public class ChainMrefBound extends ChainBase { 45 46 public Level start1; 47 public Level start2; 48 public Level start4; 49 public Level start8; 50 51 @Setup 52 public void init() { 53 start1 = get1(); 54 start2 = get2(); 55 start4 = get4(); 56 start8 = get8(); 57 } 58 59 @Benchmark 60 @OperationsPerInvocation(1) 61 public void call1(Blackhole bh) { 62 process(bh, start1); 63 } 64 65 @Benchmark 66 @OperationsPerInvocation(2) 67 public void call2(Blackhole bh) { 68 process(bh, start2); 69 } 70 71 @Benchmark 72 @OperationsPerInvocation(4) 73 public void call4(Blackhole bh) { 74 process(bh, start4); 75 } 76 77 @Benchmark 78 @OperationsPerInvocation(8) 79 public void call8(Blackhole bh) { 80 process(bh, start8); 81 } 82 83 public TopLevel get0() { 84 return () -> "GOT: "; 85 } 86 87 public Level get1() { 88 return this::get0; 89 } 90 91 public Level get2() { 92 return this::get1; 93 } 94 95 public Level get3() { 96 return this::get2; 97 } 98 99 public Level get4() { 100 return this::get3; 101 } 102 103 public Level get5() { 104 return this::get4; 105 } 106 107 public Level get6() { 108 return this::get5; 109 } 110 111 public Level get7() { 112 return this::get6; 113 } 114 115 public Level get8() { 116 return this::get7; 117 } 118 119 }