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   /*
    * Copyright 2022 The Netty Project
    *
    * The Netty Project 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:
    *
    *   https://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.netty.util.concurrent;
  
  import io.netty.channel.nio.NioEventLoopGroup;
  import io.netty.microbench.util.AbstractMicrobenchmark;
  import org.openjdk.jmh.annotations.Benchmark;
  import org.openjdk.jmh.annotations.Level;
  import org.openjdk.jmh.annotations.Measurement;
  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.annotations.Threads;
  import org.openjdk.jmh.annotations.Warmup;
  
  import java.util.concurrent.TimeUnit;
  
  @Warmup(iterations = 5, time = 3, timeUnit = TimeUnit.SECONDS)
  @Measurement(iterations = 10, time = 3, timeUnit = TimeUnit.SECONDS)
  @State(Scope.Benchmark)
  public class ScheduledFutureTaskDeadlineBenchmark extends AbstractMicrobenchmark {
      @State(Scope.Thread)
      public static class ThreadState {
  
          AbstractScheduledEventExecutor eventLoop;
          ScheduledFutureTask<?> future;
  
          @Setup(Level.Trial)
          public void reset() {
              eventLoop = (AbstractScheduledEventExecutor) new NioEventLoopGroup(1).next();
              future = (ScheduledFutureTask<?>) eventLoop.schedule(new Runnable() {
                  @Override
                  public void run() {
                  }
              }, 100, TimeUnit.DAYS);
          }
  
          @TearDown(Level.Trial)
          public void shutdown() {
              future.cancel(true);
              eventLoop.parent().shutdownGracefully().awaitUninterruptibly();
          }
      }
  
      @Benchmark
      @Threads(1)
      public long requestDeadline(final ThreadState threadState) {
          return threadState.future.delayNanos();
      }
  }