17dd252788645e940eada959bdde927426e2531c9Paul Duffin/* 27dd252788645e940eada959bdde927426e2531c9Paul Duffin * Copyright (C) 2010 The Guava Authors 37dd252788645e940eada959bdde927426e2531c9Paul Duffin * 47dd252788645e940eada959bdde927426e2531c9Paul Duffin * Licensed under the Apache License, Version 2.0 (the "License"); 57dd252788645e940eada959bdde927426e2531c9Paul Duffin * you may not use this file except in compliance with the License. 67dd252788645e940eada959bdde927426e2531c9Paul Duffin * You may obtain a copy of the License at 77dd252788645e940eada959bdde927426e2531c9Paul Duffin * 87dd252788645e940eada959bdde927426e2531c9Paul Duffin * http://www.apache.org/licenses/LICENSE-2.0 97dd252788645e940eada959bdde927426e2531c9Paul Duffin * 107dd252788645e940eada959bdde927426e2531c9Paul Duffin * Unless required by applicable law or agreed to in writing, software 117dd252788645e940eada959bdde927426e2531c9Paul Duffin * distributed under the License is distributed on an "AS IS" BASIS, 127dd252788645e940eada959bdde927426e2531c9Paul Duffin * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 137dd252788645e940eada959bdde927426e2531c9Paul Duffin * See the License for the specific language governing permissions and 147dd252788645e940eada959bdde927426e2531c9Paul Duffin * limitations under the License. 157dd252788645e940eada959bdde927426e2531c9Paul Duffin */ 167dd252788645e940eada959bdde927426e2531c9Paul Duffin 177dd252788645e940eada959bdde927426e2531c9Paul Duffinpackage com.google.common.base; 187dd252788645e940eada959bdde927426e2531c9Paul Duffin 190888a09821a98ac0680fad765217302858e70fa4Paul Duffinimport com.google.caliper.Benchmark; 207dd252788645e940eada959bdde927426e2531c9Paul Duffinimport com.google.common.base.Objects; 217dd252788645e940eada959bdde927426e2531c9Paul Duffin 227dd252788645e940eada959bdde927426e2531c9Paul Duffin/** 237dd252788645e940eada959bdde927426e2531c9Paul Duffin * Some microbenchmarks for the {@link Objects} class. 247dd252788645e940eada959bdde927426e2531c9Paul Duffin * 257dd252788645e940eada959bdde927426e2531c9Paul Duffin * @author Ben L. Titzer 267dd252788645e940eada959bdde927426e2531c9Paul Duffin */ 270888a09821a98ac0680fad765217302858e70fa4Paul Duffinpublic class ObjectsBenchmark { 287dd252788645e940eada959bdde927426e2531c9Paul Duffin 297dd252788645e940eada959bdde927426e2531c9Paul Duffin private static final Integer I0 = -45; 307dd252788645e940eada959bdde927426e2531c9Paul Duffin private static final Integer I1 = -1; 317dd252788645e940eada959bdde927426e2531c9Paul Duffin private static final Integer I2 = 3; 327dd252788645e940eada959bdde927426e2531c9Paul Duffin private static final String S0 = "3"; 337dd252788645e940eada959bdde927426e2531c9Paul Duffin private static final String S1 = "Ninety five"; 347dd252788645e940eada959bdde927426e2531c9Paul Duffin private static final String S2 = "44 one million"; 357dd252788645e940eada959bdde927426e2531c9Paul Duffin private static final String S3 = "Lowly laundry lefties"; 367dd252788645e940eada959bdde927426e2531c9Paul Duffin private static final String S4 = "89273487U#*&#"; 377dd252788645e940eada959bdde927426e2531c9Paul Duffin private static final Double D0 = 9.234d; 387dd252788645e940eada959bdde927426e2531c9Paul Duffin private static final Double D1 = -1.2e55; 397dd252788645e940eada959bdde927426e2531c9Paul Duffin 400888a09821a98ac0680fad765217302858e70fa4Paul Duffin @Benchmark int hashString_2(int reps) { 417dd252788645e940eada959bdde927426e2531c9Paul Duffin int dummy = 0; 427dd252788645e940eada959bdde927426e2531c9Paul Duffin for (int i = 0; i < reps; i++) { 437dd252788645e940eada959bdde927426e2531c9Paul Duffin dummy += Objects.hashCode(S0, S1); 447dd252788645e940eada959bdde927426e2531c9Paul Duffin } 457dd252788645e940eada959bdde927426e2531c9Paul Duffin return dummy; 467dd252788645e940eada959bdde927426e2531c9Paul Duffin } 477dd252788645e940eada959bdde927426e2531c9Paul Duffin 480888a09821a98ac0680fad765217302858e70fa4Paul Duffin @Benchmark int hashString_3(int reps) { 497dd252788645e940eada959bdde927426e2531c9Paul Duffin int dummy = 0; 507dd252788645e940eada959bdde927426e2531c9Paul Duffin for (int i = 0; i < reps; i++) { 517dd252788645e940eada959bdde927426e2531c9Paul Duffin dummy += Objects.hashCode(S0, S1, S2); 527dd252788645e940eada959bdde927426e2531c9Paul Duffin } 537dd252788645e940eada959bdde927426e2531c9Paul Duffin return dummy; 547dd252788645e940eada959bdde927426e2531c9Paul Duffin } 557dd252788645e940eada959bdde927426e2531c9Paul Duffin 560888a09821a98ac0680fad765217302858e70fa4Paul Duffin @Benchmark int hashString_4(int reps) { 577dd252788645e940eada959bdde927426e2531c9Paul Duffin int dummy = 0; 587dd252788645e940eada959bdde927426e2531c9Paul Duffin for (int i = 0; i < reps; i++) { 597dd252788645e940eada959bdde927426e2531c9Paul Duffin dummy += Objects.hashCode(S0, S1, S2, S3); 607dd252788645e940eada959bdde927426e2531c9Paul Duffin } 617dd252788645e940eada959bdde927426e2531c9Paul Duffin return dummy; 627dd252788645e940eada959bdde927426e2531c9Paul Duffin } 637dd252788645e940eada959bdde927426e2531c9Paul Duffin 640888a09821a98ac0680fad765217302858e70fa4Paul Duffin @Benchmark int hashString_5(int reps) { 657dd252788645e940eada959bdde927426e2531c9Paul Duffin int dummy = 0; 667dd252788645e940eada959bdde927426e2531c9Paul Duffin for (int i = 0; i < reps; i++) { 677dd252788645e940eada959bdde927426e2531c9Paul Duffin dummy += Objects.hashCode(S0, S1, S2, S3, S4); 687dd252788645e940eada959bdde927426e2531c9Paul Duffin } 697dd252788645e940eada959bdde927426e2531c9Paul Duffin return dummy; 707dd252788645e940eada959bdde927426e2531c9Paul Duffin } 717dd252788645e940eada959bdde927426e2531c9Paul Duffin 720888a09821a98ac0680fad765217302858e70fa4Paul Duffin @Benchmark int hashMixed_5(int reps) { 737dd252788645e940eada959bdde927426e2531c9Paul Duffin int dummy = 0; 747dd252788645e940eada959bdde927426e2531c9Paul Duffin for (int i = 0; i < reps; i++) { 757dd252788645e940eada959bdde927426e2531c9Paul Duffin dummy += Objects.hashCode(I2, S1, D1, S2, I0); 767dd252788645e940eada959bdde927426e2531c9Paul Duffin dummy += Objects.hashCode(D0, I1, S3, I2, S0); 777dd252788645e940eada959bdde927426e2531c9Paul Duffin } 787dd252788645e940eada959bdde927426e2531c9Paul Duffin return dummy; 797dd252788645e940eada959bdde927426e2531c9Paul Duffin } 807dd252788645e940eada959bdde927426e2531c9Paul Duffin} 81