text: /*
  * Copyright 2010-2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
  *
  * Licensed under the Apache License, Version 2.0 (the "License").
  * You may not use this file except in compliance with the License.
  * A copy of the License is located at
  *
  *  http://aws.amazon.com/apache2.0
  *
  * or in the "license" file accompanying this file. This file 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.
  */
  
  #pragma once
  
  #include <aws/core/Core_EXPORTS.h>
  #include <aws/core/utils/memory/stl/AWSStack.h>
  #include <functional>
  #include <atomic>
  
  namespace Aws
  {
      namespace Utils
      {
          /**
           * Make initialization and cleanup of shared resources less painful.
           * If you have this problem. Create a static instance of GetTheLights,
           * have each actor call Enter the room with your callable.
           *
           * When you are finished with the shared resources call LeaveRoom(). The last caller will
           * have its callable executed.
           */
          class AWS_CORE_API GetTheLights
          {
          public:
              GetTheLights();
              void EnterRoom(std::function<void()>&&);
              void LeaveRoom(std::function<void()>&&);
          private:
              std::atomic<int> m_value;
          };
      }
  }