| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.uima.fit.benchmark; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.function.IntConsumer; |
| import java.util.function.IntFunction; |
| import java.util.function.LongSupplier; |
| |
| import org.apache.commons.lang.StringUtils; |
| |
| public class Benchmark { |
| private IntConsumer initializer = t -> {}; |
| private RunnableWithExceptions subject; |
| |
| private String name; |
| private int baseRepeat = 20; |
| private int repeatIncrementTimes; |
| |
| private int baseMagnitude = 1; |
| private int incrementTimes; |
| private IntFunction<Integer> magnitudeIncrement = t -> t; |
| private LongSupplier timer = () -> System.currentTimeMillis(); |
| |
| private List<Batch> batches = new ArrayList<>(); |
| |
| public Benchmark(String aName, Benchmark aTemplate) { |
| name = aName; |
| |
| initializer = aTemplate.initializer; |
| subject = aTemplate.subject; |
| |
| baseRepeat = aTemplate.baseRepeat; |
| repeatIncrementTimes = aTemplate.repeatIncrementTimes; |
| |
| baseMagnitude = aTemplate.baseMagnitude; |
| incrementTimes = aTemplate.incrementTimes; |
| magnitudeIncrement = aTemplate.magnitudeIncrement; |
| timer = aTemplate.timer; |
| } |
| |
| public Benchmark(String aName) { |
| name = aName; |
| } |
| |
| public Benchmark timer(LongSupplier aTimer) |
| { |
| timer = aTimer; |
| return this; |
| } |
| |
| public Benchmark repeat(int aRepeat) |
| { |
| baseRepeat = aRepeat; |
| return this; |
| } |
| |
| public Benchmark magnitude(int aMagnitude) |
| { |
| baseMagnitude = aMagnitude; |
| return this; |
| } |
| |
| public Benchmark magnitudeIncrement(IntFunction<Integer> aIncrement) |
| { |
| magnitudeIncrement = aIncrement; |
| return this; |
| } |
| |
| public Benchmark incrementTimes(int aTimes) |
| { |
| incrementTimes = aTimes; |
| return this; |
| } |
| |
| public Benchmark initialize(IntConsumer aPieceOfCode) |
| { |
| initializer = aPieceOfCode; |
| return this; |
| } |
| |
| public Benchmark measure(RunnableWithExceptions aPieceOfCode) |
| { |
| subject = aPieceOfCode; |
| return this; |
| } |
| |
| private Batch runBatch(int aMagnitude) |
| { |
| Batch batch = new Batch(aMagnitude); |
| |
| initializer.accept(aMagnitude); |
| for (int i = 0; i < baseRepeat; i++) { |
| |
| long startTime = timer.getAsLong(); |
| try { |
| subject.run(); |
| batch.addMeasurement(new Measurement(i, timer.getAsLong() - startTime)); |
| } |
| catch (Exception e) { |
| batch.addMeasurement(new Measurement(i, timer.getAsLong() - startTime, e)); |
| } |
| } |
| |
| return batch; |
| } |
| |
| public void run() |
| { |
| System.out.printf("%n%s%n", StringUtils.repeat("=", name.length())); |
| System.out.printf("%s%n", name); |
| System.out.printf("%s%n", StringUtils.repeat("=", name.length())); |
| |
| int magnitude = baseMagnitude; |
| int n = 0; |
| |
| System.out.print("Running benchmark... "); |
| do { |
| if (magnitude > 0) { |
| System.out.printf("%d ", magnitude); |
| } |
| batches.add(runBatch(magnitude)); |
| magnitude = magnitudeIncrement.apply(magnitude); |
| n++; |
| } while (n < incrementTimes); |
| System.out.printf("%n%n"); |
| |
| for (Batch b : batches) { |
| System.out.printf("%s%n", b); |
| } |
| } |
| } |