51 lines
1.5 KiB
Java
51 lines
1.5 KiB
Java
/*
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* Copyright (C) 2008 The Guava Authors
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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 com.google.common.base;
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import com.google.caliper.Benchmark;
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import java.util.concurrent.TimeUnit;
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/**
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* Simple benchmark: create, start, read. This does not currently report the most useful result
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* because it's ambiguous to what extent the stopwatch benchmark is being affected by GC.
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*
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* @author Kevin Bourrillion
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*/
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public class StopwatchBenchmark {
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@Benchmark
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long stopwatch(int reps) {
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long total = 0;
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for (int i = 0; i < reps; i++) {
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Stopwatch s = Stopwatch.createStarted();
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// here is where you would do something
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total += s.elapsed(TimeUnit.NANOSECONDS);
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}
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return total;
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}
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@Benchmark
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long manual(int reps) {
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long total = 0;
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for (int i = 0; i < reps; i++) {
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long start = System.nanoTime();
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// here is where you would do something
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total += (System.nanoTime() - start);
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}
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return total;
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}
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}
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