/*
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* Copyright (C) 2009 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.BeforeExperiment;
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import com.google.caliper.Param;
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/**
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* Tests various Character methods, intended for testing multiple
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* implementations against each other.
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*/
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public class CharacterBenchmark {
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@Param private CharacterSet characterSet;
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@Param private Overload overload;
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private char[] chars;
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@BeforeExperiment
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protected void setUp() throws Exception {
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this.chars = characterSet.chars;
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}
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public enum Overload { CHAR, INT }
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public double nanosToUnits(double nanos) {
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return nanos / 65536;
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}
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public enum CharacterSet {
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ASCII(128),
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UNICODE(65536);
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final char[] chars;
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CharacterSet(int size) {
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this.chars = new char[65536];
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for (int i = 0; i < 65536; ++i) {
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chars[i] = (char) (i % size);
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}
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}
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}
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// A fake benchmark to give us a baseline.
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public boolean timeIsSpace(int reps) {
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boolean dummy = false;
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if (overload == Overload.CHAR) {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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dummy ^= ((char) ch == ' ');
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}
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}
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} else {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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dummy ^= (ch == ' ');
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}
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}
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}
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return dummy;
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}
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public void timeDigit(int reps) {
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if (overload == Overload.CHAR) {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.digit(chars[ch], 10);
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}
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}
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} else {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.digit((int) chars[ch], 10);
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}
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}
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}
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}
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public void timeGetNumericValue(int reps) {
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if (overload == Overload.CHAR) {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.getNumericValue(chars[ch]);
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}
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}
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} else {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.getNumericValue((int) chars[ch]);
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}
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}
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}
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}
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public void timeIsDigit(int reps) {
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if (overload == Overload.CHAR) {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.isDigit(chars[ch]);
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}
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}
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} else {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.isDigit((int) chars[ch]);
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}
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}
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}
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}
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public void timeIsIdentifierIgnorable(int reps) {
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if (overload == Overload.CHAR) {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.isIdentifierIgnorable(chars[ch]);
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}
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}
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} else {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.isIdentifierIgnorable((int) chars[ch]);
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}
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}
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}
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}
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public void timeIsJavaIdentifierPart(int reps) {
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if (overload == Overload.CHAR) {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.isJavaIdentifierPart(chars[ch]);
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}
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}
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} else {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.isJavaIdentifierPart((int) chars[ch]);
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}
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}
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}
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}
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public void timeIsJavaIdentifierStart(int reps) {
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if (overload == Overload.CHAR) {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.isJavaIdentifierStart(chars[ch]);
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}
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}
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} else {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.isJavaIdentifierStart((int) chars[ch]);
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}
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}
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}
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}
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public void timeIsLetter(int reps) {
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if (overload == Overload.CHAR) {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.isLetter(chars[ch]);
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}
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}
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} else {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.isLetter((int) chars[ch]);
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}
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}
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}
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}
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public void timeIsLetterOrDigit(int reps) {
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if (overload == Overload.CHAR) {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.isLetterOrDigit(chars[ch]);
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}
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}
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} else {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.isLetterOrDigit((int) chars[ch]);
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}
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}
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}
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}
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public void timeIsLowerCase(int reps) {
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if (overload == Overload.CHAR) {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.isLowerCase(chars[ch]);
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}
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}
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} else {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.isLowerCase((int) chars[ch]);
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}
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}
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}
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}
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public void timeIsSpaceChar(int reps) {
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if (overload == Overload.CHAR) {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.isSpaceChar(chars[ch]);
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}
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}
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} else {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.isSpaceChar((int) chars[ch]);
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}
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}
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}
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}
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public void timeIsUpperCase(int reps) {
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if (overload == Overload.CHAR) {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.isUpperCase(chars[ch]);
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}
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}
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} else {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.isUpperCase((int) chars[ch]);
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}
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}
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}
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}
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public void timeIsWhitespace(int reps) {
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if (overload == Overload.CHAR) {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.isWhitespace(chars[ch]);
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}
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}
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} else {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.isWhitespace((int) chars[ch]);
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}
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}
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}
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}
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public void timeToLowerCase(int reps) {
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if (overload == Overload.CHAR) {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.toLowerCase(chars[ch]);
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}
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}
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} else {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.toLowerCase((int) chars[ch]);
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}
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}
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}
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}
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public void timeToUpperCase(int reps) {
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if (overload == Overload.CHAR) {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.toUpperCase(chars[ch]);
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}
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}
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} else {
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for (int i = 0; i < reps; ++i) {
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for (int ch = 0; ch < 65536; ++ch) {
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Character.toUpperCase((int) chars[ch]);
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}
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}
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}
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}
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}
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