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.cassandra.test.microbench;
  
  import java.util.concurrent.TimeUnit;
  import java.util.function.BooleanSupplier;
  import java.util.function.IntSupplier;
  import java.util.function.Supplier;
  
  import org.openjdk.jmh.annotations.Benchmark;
  import org.openjdk.jmh.annotations.BenchmarkMode;
  import org.openjdk.jmh.annotations.Fork;
  import org.openjdk.jmh.annotations.Measurement;
  import org.openjdk.jmh.annotations.Mode;
  import org.openjdk.jmh.annotations.OutputTimeUnit;
  import org.openjdk.jmh.annotations.Scope;
  import org.openjdk.jmh.annotations.State;
  import org.openjdk.jmh.annotations.Threads;
  import org.openjdk.jmh.annotations.Warmup;
  
  @BenchmarkMode(Mode.SampleTime)
  @OutputTimeUnit(TimeUnit.NANOSECONDS)
  @Warmup(iterations = 3, time = 1)
  @Measurement(iterations = 6, time = 20)
  @Fork(value = 1, jvmArgsAppend = { "-Xmx256M", "-Djmh.executor=CUSTOM", "-Djmh.executor.class=org.apache.cassandra.test.microbench.FastThreadExecutor"})
  @Threads(4) // make sure this matches the number of _physical_cores_
  @State(Scope.Benchmark)
  public class AutoBoxingBench
  {
  
      @Benchmark
      public boolean booleanFromBooleanSupplier()
      {
          BooleanSupplier bs = () -> true;
          return bs.getAsBoolean();
      }
  
      @Benchmark
      public boolean booleanFromPlainSupplier()
      {
          Supplier<Boolean> bs = () -> true;
          return bs.get();
      }
  
      @Benchmark
      public int intFromIntSupplier()
      {
          IntSupplier bs = () -> 42;
          return bs.getAsInt();
      }
  
      @Benchmark
      public int intFromPlainSupplier()
      {
          Supplier<Integer> bs = () -> 42;
          return bs.get();
      }
  }
  