strong_id.hpp File Reference

Strongly typed identifiers. More...

#include "fastmm/core/config_macros.hpp"
#include "fastmm/core/fixed_string.hpp"
#include "fastmm/core/hex.hpp"
#include <compare>
#include <cstddef>
#include <cstdint>
#include <cstring>
#include <functional>
#include <limits>
#include <optional>
#include <string_view>
#include <type_traits>

Go to the source code of this file.

Classes
struct	fastmm::StrongId< Tag, Rep, kInvalid >
struct	fastmm::Handle< T >
struct	std::hash< fastmm::StrongId< Tag, Rep, I > >

Namespaces
namespace	fastmm

Typedefs
using	fastmm::InstrumentId = StrongId< struct InstrumentTag, std::uint32_t >
	Dense index into the engine's instrument table.
using	fastmm::VenueId = StrongId< struct VenueTag, std::uint8_t >
using	fastmm::ClientOrderId = StrongId< struct ClientOrderTag, std::uint64_t, 0 >
	48-bit: session_epoch(16) << 32 | seq(32). 0 is never issued.
using	fastmm::VenueOrderId = FixedString< 40 >
using	fastmm::TimerId = StrongId< struct TimerTag, std::uint32_t >
using	fastmm::ExecId = FixedString< 40 >

Functions
FASTMM_FORCE_INLINE void	fastmm::write_cl_ord_id (char *dst, ClientOrderId id) noexcept
	Writes the kClOrdIdChars characters of the wire form to dst (no terminator) with two 8-byte stores.
FixedString< 16 >	fastmm::encode_cl_ord_id (ClientOrderId id) noexcept
std::optional< ClientOrderId >	fastmm::decode_cl_ord_id (std::string_view s) noexcept
constexpr ClientOrderId	fastmm::make_cl_ord_id (std::uint16_t epoch, std::uint32_t seq) noexcept
constexpr std::uint16_t	fastmm::cl_ord_id_epoch (ClientOrderId id) noexcept
constexpr std::uint32_t	fastmm::cl_ord_id_seq (ClientOrderId id) noexcept

Variables
constexpr std::uint32_t	fastmm::kNullHandle = std::numeric_limits<std::uint32_t>::max()
	32-bit pool index handle.
constexpr std::size_t	fastmm::kClOrdIdChars = 14
	"fm" + 12 lowercase hex digits (48 bits) = 14 chars. Fits Binance (36) and Bybit (36).

Detailed Description

Strongly typed identifiers.

Mixing an InstrumentId with a VenueId is a compile error.