Elliott Hughes | 97aba27 | 2013-02-13 16:21:51 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 Google Inc. |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package benchmarks; |
| 18 | |
| 19 | import com.google.caliper.Param; |
| 20 | import com.google.caliper.Runner; |
| 21 | import com.google.caliper.SimpleBenchmark; |
| 22 | |
| 23 | /** |
| 24 | * Compares various kinds of method invocation. |
| 25 | */ |
| 26 | public class MethodInvocationBenchmark extends SimpleBenchmark { |
| 27 | interface I { |
| 28 | void emptyInterface(); |
| 29 | } |
| 30 | |
| 31 | static class C implements I { |
| 32 | private int field; |
| 33 | |
| 34 | private int getField() { |
| 35 | return field; |
| 36 | } |
| 37 | |
| 38 | public int timeInternalGetter(int reps) { |
| 39 | int result = 0; |
| 40 | for (int i = 0; i < reps; ++i) { |
| 41 | result = getField(); |
| 42 | } |
| 43 | return result; |
| 44 | } |
| 45 | |
| 46 | public int timeInternalFieldAccess(int reps) { |
| 47 | int result = 0; |
| 48 | for (int i = 0; i < reps; ++i) { |
| 49 | result = field; |
| 50 | } |
| 51 | return result; |
| 52 | } |
| 53 | |
| 54 | public static void emptyStatic() { |
| 55 | } |
| 56 | |
| 57 | public void emptyVirtual() { |
| 58 | } |
| 59 | |
| 60 | public void emptyInterface() { |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | public void timeInternalGetter(int reps) { |
| 65 | new C().timeInternalGetter(reps); |
| 66 | } |
| 67 | |
| 68 | public void timeInternalFieldAccess(int reps) { |
| 69 | new C().timeInternalFieldAccess(reps); |
| 70 | } |
| 71 | |
| 72 | // Test an intrinsic. |
| 73 | public int timeStringLength(int reps) { |
| 74 | int result = 0; |
| 75 | for (int i = 0; i < reps; ++i) { |
| 76 | result = "hello, world!".length(); |
| 77 | } |
| 78 | return result; |
| 79 | } |
| 80 | |
| 81 | public void timeEmptyStatic(int reps) { |
| 82 | C c = new C(); |
| 83 | for (int i = 0; i < reps; ++i) { |
| 84 | c.emptyStatic(); |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | public void timeEmptyVirtual(int reps) { |
| 89 | C c = new C(); |
| 90 | for (int i = 0; i < reps; ++i) { |
| 91 | c.emptyVirtual(); |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | public void timeEmptyInterface(int reps) { |
| 96 | I c = new C(); |
| 97 | for (int i = 0; i < reps; ++i) { |
| 98 | c.emptyInterface(); |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | public static class Inner { |
| 103 | private int i; |
| 104 | private void privateMethod() { ++i; } |
| 105 | protected void protectedMethod() { ++i; } |
| 106 | public void publicMethod() { ++i; } |
| 107 | void packageMethod() { ++i; } |
| 108 | final void finalPackageMethod() { ++i; } |
| 109 | } |
| 110 | |
| 111 | public void timePrivateInnerPublicMethod(int reps) { |
| 112 | Inner inner = new Inner(); |
| 113 | for (int i = 0; i < reps; ++i) { |
| 114 | inner.publicMethod(); |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | public void timePrivateInnerProtectedMethod(int reps) { |
| 119 | Inner inner = new Inner(); |
| 120 | for (int i = 0; i < reps; ++i) { |
| 121 | inner.protectedMethod(); |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | public void timePrivateInnerPrivateMethod(int reps) { |
| 126 | Inner inner = new Inner(); |
| 127 | for (int i = 0; i < reps; ++i) { |
| 128 | inner.privateMethod(); |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | public void timePrivateInnerPackageMethod(int reps) { |
| 133 | Inner inner = new Inner(); |
| 134 | for (int i = 0; i < reps; ++i) { |
| 135 | inner.packageMethod(); |
| 136 | } |
| 137 | } |
| 138 | |
| 139 | public void timePrivateInnerFinalPackageMethod(int reps) { |
| 140 | Inner inner = new Inner(); |
| 141 | for (int i = 0; i < reps; ++i) { |
| 142 | inner.finalPackageMethod(); |
| 143 | } |
| 144 | } |
| 145 | } |