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