author | redestad |
Fri, 16 Nov 2018 23:39:51 +0100 | |
changeset 52595 | 16609197022c |
child 54043 | 0324b3756aa2 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2014 Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package org.openjdk.bench.java.lang; |
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|
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import org.openjdk.jmh.annotations.Benchmark; |
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import org.openjdk.jmh.annotations.BenchmarkMode; |
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import org.openjdk.jmh.annotations.Mode; |
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import org.openjdk.jmh.annotations.OutputTimeUnit; |
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import org.openjdk.jmh.annotations.Scope; |
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import org.openjdk.jmh.annotations.Setup; |
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import org.openjdk.jmh.annotations.State; |
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import java.util.concurrent.TimeUnit; |
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@BenchmarkMode(Mode.AverageTime) |
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@OutputTimeUnit(TimeUnit.NANOSECONDS) |
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@State(Scope.Thread) |
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public class StringIndexOf { |
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private String dataString; |
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private String searchString; |
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private String dataStringBig; |
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private String searchStringBig; |
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private String data; |
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private String sub; |
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private String shortSub1; |
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private String data2; |
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private String shortSub2; |
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@Setup |
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public void setup() { |
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dataString = "ngdfilsoscargfdgf"; |
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searchString = "oscar"; |
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dataStringBig = "2937489745890797905764956790452976742965790437698498409583479067ngdcapaapapapasdkajdlkajskldjaslkjdlkasjdsalkjas"; |
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searchStringBig = "capaapapapasdkajdlkajskldjaslkjdlkasjdsalk"; |
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data = "0000100101010010110101010010101110101001110110101010010101010010000010111010101010101010100010010101110111010101101010100010010100001010111111100001010101001010100001010101001010101010111010010101010101010101010101010"; |
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sub = "10101010"; |
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shortSub1 = "1"; |
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data2 = "00001001010100a10110101010010101110101001110110101010010101010010000010111010101010101010a100010010101110111010101101010100010010a100a0010101111111000010101010010101000010101010010101010101110a10010101010101010101010101010"; |
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shortSub2 = "a"; |
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} |
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/** IndexOf Micros Strings */ |
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/** |
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* Benchmarks String.indexOf with a rather small String to search and a rather small String to search for. The |
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* searched string contains the string that is searched for. |
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*/ |
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@Benchmark |
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public int success() { |
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return dataString.indexOf(searchString, 2); |
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} |
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/** |
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* Benchmarks String.indexOf with a rather big String to search and a rather big String to search for. The searched |
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* string contains the string that is searched for. |
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*/ |
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@Benchmark |
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public int successBig() { |
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return dataStringBig.indexOf(searchStringBig, 2); |
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} |
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/** |
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* Benchmarks String.indexOf with a rather big String. Search repeatedly for a matched that is 8 chars and most |
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* oftenly will require a inner lopp match in String.indexOf with sse42. |
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*/ |
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@Benchmark |
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public int advancedWithMediumSub() { |
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int index = 0; |
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int dummy = 0; |
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while ((index = data.indexOf(sub, index)) > -1) { |
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index++; |
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dummy += index; |
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} |
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return dummy; |
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} |
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/** |
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* Benchmarks String.indexOf with a rather big String. Search repeatedly for a matched that is 1 chars will find a |
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* huge amount of matches |
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*/ |
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@Benchmark |
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public int advancedWithShortSub1() { |
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int dummy = 0; |
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int index = 0; |
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while ((index = data.indexOf(shortSub1, index)) > -1) { |
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index++; |
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dummy += index; |
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} |
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return dummy; |
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} |
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/** |
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* Benchmarks String.indexOf with a rather big String. Search repeatedly for a matched that is 1 chars but only with |
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* a few matches. |
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*/ |
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@Benchmark |
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public int advancedWithShortSub2() { |
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int dummy = 0; |
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int index = 0; |
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while ((index = data2.indexOf(shortSub2, index)) > -1) { |
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index++; |
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dummy += index; |
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} |
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return dummy; |
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} |
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@Benchmark |
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public void constantPattern() { |
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String tmp = "simple-hash:SHA-1/UTF-8"; |
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if (!tmp.contains("SHA-1")) { |
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throw new RuntimeException("indexOf failed"); |
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} |
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} |
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8061281: Microbenchmark suite build support, directory layout and sample benchmarks
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8061281: Microbenchmark suite build support, directory layout and sample benchmarks
redestad
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diff
changeset
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138 |
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