uimafit-benchmark/src/main/java/org/apache/uima/fit/benchmark/BenchmarkGroup.java

/*
 * 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 static java.util.Comparator.comparing;

import java.util.ArrayList;
import java.util.List;

public class BenchmarkGroup {
  private final String name;
  private final List<Benchmark> benchmarks = new ArrayList<>();

  public BenchmarkGroup(String aName) {
    name = aName;
  }

  public BenchmarkGroup add(Benchmark aBenchmark) {
    benchmarks.add(aBenchmark);
    return this;
  }

  public void runAll() {
    System.out.printf(">>>>>>>>>>>>>>>>>>%n");
    System.out.printf("GROUP: %s%n", name);

    for (Benchmark benchmark : benchmarks) {
      benchmark.run();
    }

    System.out.printf("%n%nSorted by execution time:%n");
    benchmarks.stream()
        .sorted(comparing(Benchmark::getCumulativeDuration))
        .forEach(benchmark -> {
          Measurement slowest = benchmark.getSlowestMeasurement();
          System.out.printf("%6dms / %4dms -- %s%n", benchmark.getCumulativeDuration(), slowest.getDuration(),
              benchmark.getName());
        });

    System.out.printf(">>>>>>>>>>>>>>>>>>%n%n");
  }
}