content: /*
   * 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.arrow.memory;
  
  import java.util.concurrent.TimeUnit;
  import org.openjdk.jmh.annotations.Benchmark;
  import org.openjdk.jmh.annotations.BenchmarkMode;
  import org.openjdk.jmh.annotations.Mode;
  import org.openjdk.jmh.annotations.OutputTimeUnit;
  import org.openjdk.jmh.annotations.Scope;
  import org.openjdk.jmh.annotations.Setup;
  import org.openjdk.jmh.annotations.State;
  import org.openjdk.jmh.annotations.TearDown;
  import org.openjdk.jmh.runner.Runner;
  import org.openjdk.jmh.runner.RunnerException;
  import org.openjdk.jmh.runner.options.Options;
  import org.openjdk.jmh.runner.options.OptionsBuilder;
  
  /** Benchmarks for {@link ArrowBuf}. */
  @State(Scope.Benchmark)
  public class ArrowBufBenchmarks {
  
    private static final int BUFFER_CAPACITY = 1024 * 1024;
  
    private static final int ALLOCATOR_CAPACITY = 1024 * 1024;
  
    private BufferAllocator allocator;
  
    private ArrowBuf buffer;
  
    /** Setup benchmarks. */
    @Setup
    public void prepare() {
      allocator = new RootAllocator(ALLOCATOR_CAPACITY);
      buffer = allocator.buffer(BUFFER_CAPACITY);
    }
  
    /** Tear down benchmarks. */
    @TearDown
    public void tearDown() {
      buffer.close();
      allocator.close();
    }
  
    @Benchmark
    @BenchmarkMode(Mode.AverageTime)
    @OutputTimeUnit(TimeUnit.NANOSECONDS)
    public void setZero() {
      buffer.setZero(0, BUFFER_CAPACITY);
    }
  
    public static void main(String[] args) throws RunnerException {
      Options opt =
          new OptionsBuilder().include(ArrowBufBenchmarks.class.getSimpleName()).forks(1).build();
  
      new Runner(opt).run();
    }
  }
  