| /* |
| * Copyright (C) 2010 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package benchmarks.regression; |
| |
| import com.google.caliper.Param; |
| |
| public class CharsetBenchmark { |
| @Param({ "1", "10", "100", "1000", "10000" }) |
| private int length; |
| |
| // canonical => canonical charset name |
| // built-in => guaranteed-present charset |
| // special-case => libcore treats this charset specially for performance |
| @Param({ |
| "UTF-16", // canonical, built-in, non-special-case |
| "UTF-8", // canonical, built-in, special-case |
| "UTF8", // non-canonical, built-in, special-case |
| "ISO-8859-1", // canonical, built-in, special-case |
| "8859_1", // non-canonical, built-in, special-case |
| "ISO-8859-2", // canonical, non-built-in, non-special-case |
| "8859_2", // non-canonical, non-built-in, non-special-case |
| "US-ASCII", // canonical, built-in, special-case |
| "ASCII" // non-canonical, built-in, special-case |
| }) |
| private String name; |
| |
| public void time_new_String_BString(int reps) throws Exception { |
| byte[] bytes = makeBytes(makeString(length)); |
| for (int i = 0; i < reps; ++i) { |
| new String(bytes, name); |
| } |
| } |
| |
| public void time_new_String_BII(int reps) throws Exception { |
| byte[] bytes = makeBytes(makeString(length)); |
| for (int i = 0; i < reps; ++i) { |
| new String(bytes, 0, bytes.length); |
| } |
| } |
| |
| public void time_new_String_BIIString(int reps) throws Exception { |
| byte[] bytes = makeBytes(makeString(length)); |
| for (int i = 0; i < reps; ++i) { |
| new String(bytes, 0, bytes.length, name); |
| } |
| } |
| |
| public void time_String_getBytes(int reps) throws Exception { |
| String string = makeString(length); |
| for (int i = 0; i < reps; ++i) { |
| string.getBytes(name); |
| } |
| } |
| |
| private static String makeString(int length) { |
| StringBuilder result = new StringBuilder(length); |
| for (int i = 0; i < length; ++i) { |
| result.append('A' + (i % 26)); |
| } |
| return result.toString(); |
| } |
| |
| private static byte[] makeBytes(String s) { |
| try { |
| return s.getBytes("US-ASCII"); |
| } catch (Exception ex) { |
| throw new RuntimeException(ex); |
| } |
| } |
| } |