Class mutable_registered_buffer

demo_example/asio/asio/registered_buffer.hpp:84–155

Holds a registered buffer over modifiable data. * Satisfies the @c MutableBufferSequence type requirements. */

 * Satisfies the @c MutableBufferSequence type requirements.
 */
class mutable_registered_buffer
{
public:
#if !defined(ASIO_HAS_DECLTYPE) \
  && !defined(GENERATING_DOCUMENTATION)
  typedef mutable_buffer value_type;
#endif // !defined(ASIO_HAS_DECLTYPE)
       //   && !defined(GENERATING_DOCUMENTATION)

  /// Default constructor creates an invalid registered buffer.
  mutable_registered_buffer() ASIO_NOEXCEPT
    : buffer_(),
      id_()
  {
  }

  /// Get the underlying mutable buffer.
  const mutable_buffer& buffer() const ASIO_NOEXCEPT
  {
    return buffer_;
  }

  /// Get a pointer to the beginning of the memory range.
  /**
   * @returns <tt>buffer().data()</tt>.
   */
  void* data() const ASIO_NOEXCEPT
  {
    return buffer_.data();
  }

  /// Get the size of the memory range.
  /**
   * @returns <tt>buffer().size()</tt>.
   */
  std::size_t size() const ASIO_NOEXCEPT
  {
    return buffer_.size();
  }

  /// Get the registered buffer identifier.
  const registered_buffer_id& id() const ASIO_NOEXCEPT
  {
    return id_;
  }

  /// Move the start of the buffer by the specified number of bytes.
  mutable_registered_buffer& operator+=(std::size_t n) ASIO_NOEXCEPT
  {
    buffer_ += n;
    return *this;
  }

private:
  friend class detail::buffer_registration_base;

  // Hidden constructor used by buffer registration and operators.
  mutable_registered_buffer(const mutable_buffer& b,