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.chain; 24 import org.openjdk.jmh.annotations.Benchmark; 25 import org.openjdk.jmh.annotations.BenchmarkMode; 26 import org.openjdk.jmh.annotations.Mode; 27 import org.openjdk.jmh.annotations.OperationsPerInvocation; 28 import org.openjdk.jmh.annotations.OutputTimeUnit; 29 import org.openjdk.jmh.annotations.Scope; 30 import org.openjdk.jmh.annotations.Setup; 31 import org.openjdk.jmh.annotations.State; 32 import org.openjdk.jmh.infra.Blackhole; 33 34 import java.util.concurrent.TimeUnit; 35 36 /** 37 * Chain of (capture + invocation) microbenchmark. 38 */ 39 @State(Scope.Benchmark) 40 @BenchmarkMode(Mode.AverageTime) 41 @OutputTimeUnit(TimeUnit.NANOSECONDS) 42 public class ChainLambdaCap0 extends ChainBase { 43 44 public Level start1; 45 public Level start2; 46 public Level start4; 47 public Level start8; 48 49 @Setup 50 public void init() { 51 start1 = get1(); 52 start2 = get2(); 53 start4 = get4(); 54 start8 = get8(); 55 } 56 57 @Benchmark 58 @OperationsPerInvocation(1) 59 public void call1(Blackhole bh) { 60 process(bh, start1); 61 } 62 63 @Benchmark 64 @OperationsPerInvocation(2) 65 public void call2(Blackhole bh) { 66 process(bh, start2); 67 } 68 69 @Benchmark 70 @OperationsPerInvocation(4) 71 public void call4(Blackhole bh) { 72 process(bh, start4); 73 } 74 75 @Benchmark 76 @OperationsPerInvocation(8) 77 public void call8(Blackhole bh) { 78 process(bh, start8); 79 } 80 81 public static TopLevel get0() { 82 return () -> "GOT: "; 83 } 84 85 public static Level get1() { 86 return () -> get0(); 87 } 88 89 public static Level get2() { 90 return () -> get1(); 91 } 92 93 public static Level get3() { 94 return () -> get2(); 95 } 96 97 public static Level get4() { 98 return () -> get3(); 99 } 100 101 public static Level get5() { 102 return () -> get4(); 103 } 104 105 public static Level get6() { 106 return () -> get5(); 107 } 108 109 public static Level get7() { 110 return () -> get6(); 111 } 112 113 public static Level get8() { 114 return () -> get7(); 115 } 116 117 }