Method use_count

cpp/fory/serialization/weak_ptr_serializer.h:137–137

get the use count of the target object. @return The number of shared_ptr instances pointing to the target, or 0 if the target has been destroyed.

  /// @return The number of shared_ptr instances pointing to the target,
  ///         or 0 if the target has been destroyed.
  long use_count() const { return inner_->weak.use_count(); }

  /// get the underlying weak_ptr.
  ///