content: /*
   * 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 io.airlift.slice;
  
  import com.google.common.hash.Hashing;
  import org.openjdk.jmh.annotations.Benchmark;
  import org.openjdk.jmh.annotations.Fork;
  import org.openjdk.jmh.annotations.Measurement;
  import org.openjdk.jmh.annotations.OutputTimeUnit;
  import org.openjdk.jmh.annotations.Scope;
  import org.openjdk.jmh.annotations.State;
  import org.openjdk.jmh.annotations.Warmup;
  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;
  import org.openjdk.jmh.runner.options.VerboseMode;
  
  import java.util.concurrent.TimeUnit;
  
  @State(Scope.Thread)
  @OutputTimeUnit(TimeUnit.SECONDS)
  @Fork(5)
  @Warmup(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
  @Measurement(iterations = 10, time = 500, timeUnit = TimeUnit.MILLISECONDS)
  public class BenchmarkMurmur3Hash128
  {
      @Benchmark
      public long hash64(BenchmarkData data, ByteCounter counter)
      {
          counter.add(data.getSlice().length());
          return Murmur3Hash128.hash64(data.getSlice());
      }
  
      @Benchmark
      public Slice hash(BenchmarkData data, ByteCounter counter)
      {
          counter.add(data.getSlice().length());
          return Murmur3Hash128.hash(data.getSlice());
      }
  
      @Benchmark
      public long guava(BenchmarkData data, ByteCounter counter)
      {
          counter.add(data.getSlice().length());
          return Hashing.murmur3_128().hashBytes(data.getBytes()).asLong();
      }
  
      @Benchmark
      public long specializedHashLong(SingleLong data, ByteCounter counter)
      {
          counter.add(SizeOf.SIZE_OF_LONG);
          return Murmur3Hash128.hash64(data.getValue());
      }
  
      @Benchmark
      public long hashLong(SingleLong data, ByteCounter counter)
      {
          counter.add(SizeOf.SIZE_OF_LONG);
          return Murmur3Hash128.hash64(data.getSlice(), 0, 8);
      }
  
      public static void main(String[] args)
              throws RunnerException
      {
          Options options = new OptionsBuilder()
                  .verbosity(VerboseMode.NORMAL)
                  .include(".*" + BenchmarkMurmur3Hash128.class.getSimpleName() + ".*")
                  .build();
  
          new Runner(options).run();
      }
  }
  