197aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes/* 297aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * Copyright (C) 2010 Google Inc. 397aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * 497aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * Licensed under the Apache License, Version 2.0 (the "License"); 597aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * you may not use this file except in compliance with the License. 697aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * You may obtain a copy of the License at 797aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * 897aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * http://www.apache.org/licenses/LICENSE-2.0 997aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * 1097aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * Unless required by applicable law or agreed to in writing, software 1197aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * distributed under the License is distributed on an "AS IS" BASIS, 1297aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1397aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * See the License for the specific language governing permissions and 1497aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * limitations under the License. 1597aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes */ 1697aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes 1797aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughespackage benchmarks; 1897aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes 1997aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughesimport java.util.HashMap; 20ea13f8291a92b6f47f50011da1d5e8c107984bc3Paul Duffinimport java.util.Map; 2197aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes 2297aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes/** 2397aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * Is there a performance reason to "Prefer virtual over interface", as the 2497aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * Android documentation once claimed? 2597aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes */ 26ea13f8291a92b6f47f50011da1d5e8c107984bc3Paul Duffinpublic class VirtualVersusInterfaceBenchmark { 2797aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes public void timeMapPut(int reps) { 2897aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes Map<String, String> map = new HashMap<String, String>(); 2997aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes for (int i = 0; i < reps; ++i) { 3097aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes map.put("hello", "world"); 3197aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes } 3297aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes } 3397aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes public void timeHashMapPut(int reps) { 3497aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes HashMap<String, String> map = new HashMap<String, String>(); 3597aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes for (int i = 0; i < reps; ++i) { 3697aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes map.put("hello", "world"); 3797aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes } 3897aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes } 3997aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes} 40