connection_guard.h

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// === connection_guard.h ==============================================================================================
//                                               Sen Infrastructure
//                   Released under the Apache License v2.0 (SPDX-License-Identifier Apache-2.0).
//                                    See the LICENSE.txt file for more information.
//                   © Airbus SAS, Airbus Helicopters, and Airbus Defence and Space SAU/GmbH/SAS.
// =====================================================================================================================
 
#ifndef SEN_CORE_OBJ_CONNECTION_GUARD_H
#define SEN_CORE_OBJ_CONNECTION_GUARD_H
 
// sen
#include "sen/core/base/compiler_macros.h"
#include "sen/core/meta/type.h"
 
// std
#include <cstdint>
#include <memory>
 
namespace sen
{
 
namespace impl
{
 
template <typename... T>
class EventBuffer;
 
}

 
class Object;

class [[nodiscard]] ConnectionGuard
{
public:
  SEN_COPY_CONSTRUCT(ConnectionGuard) = delete;
  SEN_COPY_ASSIGN(ConnectionGuard) = delete;
 
public:
  SEN_MOVE_CONSTRUCT(ConnectionGuard);
  SEN_MOVE_ASSIGN(ConnectionGuard);
 
public:
  ConnectionGuard();

  ~ConnectionGuard();

  void keep() noexcept;
 
private:
  friend class Object;
 
  template <typename... T>
  friend class impl::EventBuffer;

  ConnectionGuard(Object* source, uint32_t id, MemberHash memberHash, bool typed);

  void destroy();
 
private:
  std::weak_ptr<Object> source_;
  uint32_t id_;
  MemberHash memberHash_;
  bool typed_;
};

 
}  // namespace sen
 
#endif  // SEN_CORE_OBJ_CONNECTION_GUARD_H