65 lines
1.7 KiB
Java
65 lines
1.7 KiB
Java
/*
|
|
* Copyright (C) 2011 The Guava Authors
|
|
*
|
|
* 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 com.google.common.base;
|
|
|
|
import com.google.caliper.BeforeExperiment;
|
|
import com.google.caliper.Benchmark;
|
|
import com.google.caliper.Param;
|
|
import com.google.common.collect.Iterables;
|
|
|
|
/**
|
|
* Microbenchmark for {@link Splitter#on} with char vs String with length == 1.
|
|
*
|
|
* @author Paul Lindner
|
|
*/
|
|
public class SplitterBenchmark {
|
|
// overall size of string
|
|
@Param({"1", "10", "100", "1000"})
|
|
int length;
|
|
// Number of matching strings
|
|
@Param({"xxxx", "xxXx", "xXxX", "XXXX"})
|
|
String text;
|
|
|
|
private String input;
|
|
|
|
private static final Splitter CHAR_SPLITTER = Splitter.on('X');
|
|
private static final Splitter STRING_SPLITTER = Splitter.on("X");
|
|
|
|
@BeforeExperiment
|
|
void setUp() {
|
|
input = Strings.repeat(text, length);
|
|
}
|
|
|
|
@Benchmark
|
|
void charSplitter(int reps) {
|
|
int total = 0;
|
|
|
|
for (int i = 0; i < reps; i++) {
|
|
total += Iterables.size(CHAR_SPLITTER.split(input));
|
|
}
|
|
}
|
|
|
|
@Benchmark
|
|
void stringSplitter(int reps) {
|
|
int total = 0;
|
|
|
|
for (int i = 0; i < reps; i++) {
|
|
total += Iterables.size(STRING_SPLITTER.split(input));
|
|
}
|
|
}
|
|
}
|