weak_ptr_internals.h¶

Internal implementation details for WeakPtr system. More...

Namespaces¶

Name
cf
cf::internal

Classes¶

	Name
class	cf::internal::WeakReferenceFlag Shared flag tracking WeakPtr liveness state.

Detailed Description¶

Internal implementation details for WeakPtr system.

Author: N/A

Version: N/A

Since: N/A

Date: N/A

This header contains the internal implementation details for the WeakPtr system. External code should not directly include or depend on this file. WeakPtr and WeakPtrFactory share the WeakReferenceFlag to track liveness.

Source code¶

#pragma once

#include <atomic>
#include <memory>

namespace cf {
namespace internal {

class WeakReferenceFlag {
  public:
    WeakReferenceFlag() = default;

    WeakReferenceFlag(const WeakReferenceFlag&) = delete;

    WeakReferenceFlag& operator=(const WeakReferenceFlag&) = delete;

    WeakReferenceFlag(WeakReferenceFlag&&) = delete;

    WeakReferenceFlag& operator=(WeakReferenceFlag&&) = delete;

    [[nodiscard]] bool IsAlive() const noexcept { return alive_.load(std::memory_order_acquire); }

    void Invalidate() noexcept { alive_.store(false, std::memory_order_release); }

  private:
    std::atomic<bool> alive_{true};
};

using WeakReferenceFlagPtr = std::shared_ptr<WeakReferenceFlag>;

} // namespace internal
} // namespace cf

Updated on 2026-03-09 at 10:14:01 +0000