helper.hpp

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#pragma once
 
#include <yaclib/util/detail/atomic_counter.hpp>
#include <yaclib/util/detail/unique_counter.hpp>
#include <yaclib/util/intrusive_ptr.hpp>
 
#include <cstddef>
 
namespace yaclib {
namespace detail {
 
template <template <typename...> typename Counter, typename ObjectT>
class Helper final : public Counter<ObjectT, DefaultDeleter> {
 public:
  using Counter<ObjectT, DefaultDeleter>::Counter;
 
  void IncRef() noexcept final {
    this->Add(1);
  }
 
  void DecRef() noexcept final {
    this->Sub(1);
  }
 
  size_t GetRef() noexcept final {
    return this->Get();
  }
};
 
}  // namespace detail
 
template <typename ObjectT, typename... Args>
auto MakeUnique(Args&&... args) {
  return IntrusivePtr{NoRefTag{}, new detail::Helper<detail::OneCounter, ObjectT>{0, std::forward<Args>(args)...}};
}
 
template <typename ObjectT, typename... Args>
auto MakeShared(std::size_t n, Args&&... args) {
  return IntrusivePtr{NoRefTag{}, new detail::Helper<detail::AtomicCounter, ObjectT>{n, std::forward<Args>(args)...}};
}
 
}  // namespace yaclib