text: /*
   * Copyright 2014-2019 Real Logic Ltd.
   *
   * 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
   *
   * 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.
   */
  #ifndef AERON_UTIL_SCOPE_FILE_H
  #define AERON_UTIL_SCOPE_FILE_H
  
  #include <memory>
  
  namespace aeron { namespace util {
  
  class OnScopeExit
  {
  public:
      template<typename func_t>
      inline OnScopeExit(const func_t &func) : m_holder(new FuncHolder<func_t>(func))
      {
      }
  
  private:
      struct FuncHolderBase
      {
          virtual ~FuncHolderBase()
          {
          }
      };
  
      template<typename func_t>
      struct FuncHolder : public FuncHolderBase
      {
          func_t f;
  
          inline FuncHolder(const func_t &func) : f(func)
          {
          }
  
          virtual ~FuncHolder()
          {
              f();
          }
      };
  
      std::unique_ptr<FuncHolderBase> m_holder;
  };
  
  class CallbackGuard
  {
  public:
      explicit CallbackGuard(bool& isInCallback) : m_isInCallback(isInCallback)
      {
          m_isInCallback = true;
      }
  
      ~CallbackGuard()
      {
          m_isInCallback = false;
      }
  
      CallbackGuard(const CallbackGuard&) = delete;
  
      CallbackGuard& operator = (const CallbackGuard&) = delete;
  
  private:
      bool& m_isInCallback;
  };
  
  }}
  
  
  #endif
  