wire.hpp File Reference

Single source of truth for the ITCH 5.0 wire layout metadata shared by the eager parser, the zero-copy overlay, and the encoder. More...

#include <cstddef>
#include <cstdint>
#include "itch/messages.hpp"

Include dependency graph for wire.hpp:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Namespaces
namespace	itch
namespace	itch::detail

Functions
template<typename Visitor >
constexpr auto	itch::detail::for_each_message_type (Visitor &&visitor) -> void
	Invokes visitor.template operator()<MsgType>(type_byte) once for each ITCH 5.0 message type, in a fixed order.

Variables
constexpr std::size_t	itch::detail::TIMESTAMP_STRUCT_PADDING = sizeof(std::uint64_t) - 6
	The on-wire ITCH timestamp is 48 bits (6 bytes), but every message struct stores it in a 64-bit field, so each struct is exactly two bytes wider than its encoding.
template<typename MsgType >
constexpr std::size_t	itch::detail::WIRE_SIZE = sizeof(MsgType) - TIMESTAMP_STRUCT_PADDING
	The exact on-wire size, in bytes, of a fully formed message of type T.

Detailed Description

Single source of truth for the ITCH 5.0 wire layout metadata shared by the eager parser, the zero-copy overlay, and the encoder.

Keeping the per-type wire size and the canonical list of message types in one place means the dispatch table, the overlay accessors, and the writer can never drift apart from one another.

Author

Bertin Balouki SIMYELI

Definition in file wire.hpp.