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.simulator.test;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.concurrent.atomic.AtomicInteger;
  
  import org.apache.cassandra.utils.Nemesis;
  import org.apache.cassandra.utils.Simulate;
  
  import static org.apache.cassandra.utils.Simulate.With.MONITORS;
  
  @Simulate(with = MONITORS)
  public class ClassWithSynchronizedMethods
  {
      @Nemesis
      private static final AtomicInteger staticCounter1 = new AtomicInteger();
      @Nemesis
      private static final AtomicInteger staticCounter2 = new AtomicInteger();
  
      public static class Execution
      {
          public final int thread;
          public final int sequenceNumber;
  
          public Execution(int thread, int sequenceNumber)
          {
              this.thread = thread;
              this.sequenceNumber = sequenceNumber;
          }
  
          public String toString()
          {
              return "Execution{" +
                     "thread=" + thread +
                     ", sequenceNumber=" + sequenceNumber +
                     '}';
          }
      }
  
      public static final List<Execution> executions = new ArrayList<>();
  
      public static synchronized void synchronizedMethodWithParams(int thread, int sequenceNumber)
      {
          int before1 = staticCounter1.get();
          int before2 = staticCounter2.get();
  
          Execution execution = new Execution(thread, sequenceNumber);
          executions.add(execution);
  
          // Despite interleavings of synchronized method calls, two threads can not enter the synchronized block together,
          // even in presence of nemesis
          boolean res1 = staticCounter1.compareAndSet(before1, before1 + 1);
          assert res1;
          boolean res2 = staticCounter2.compareAndSet(before2, before2 + 1);
          assert res2;
      }
  }
  