#include <uhd/transport/udp_zero_copy.hpp>

Inheritance diagram for uhd::transport::udp_zero_copy:

Classes
struct	buff_params

Public Types
typedef boost::shared_ptr< udp_zero_copy >	sptr

Public Types inherited from uhd::transport::zero_copy_if
typedef boost::shared_ptr< zero_copy_if >	sptr

Public Member Functions
virtual uint16_t	get_local_port (void) const =0

virtual std::string	get_local_addr (void) const =0

Public Member Functions inherited from uhd::transport::zero_copy_if
virtual	~zero_copy_if ()

virtual managed_recv_buffer::sptr	get_recv_buff (double timeout=0.1)=0

virtual size_t	get_num_recv_frames (void) const =0

virtual size_t	get_recv_frame_size (void) const =0

virtual managed_send_buffer::sptr	get_send_buff (double timeout=0.1)=0

virtual size_t	get_num_send_frames (void) const =0

virtual size_t	get_send_frame_size (void) const =0

Static Public Member Functions
static sptr	make (const std::string &addr, const std::string &port, const zero_copy_xport_params &default_buff_args, udp_zero_copy::buff_params &buff_params_out, const device_addr_t &hints=device_addr_t())

Detailed Description

A zero copy udp transport provides an efficient way to handle data. by avoiding the extra copy when recv() or send() is called on the socket. Rather, the zero copy transport gives the caller memory references. The caller informs the transport when it is finished with the reference.

On Linux systems, the zero copy transport can use a kernel packet ring. If no platform specific solution is available, make returns a boost asio implementation that wraps the functionality around a standard send/recv calls.

Member Typedef Documentation

◆ sptr

typedef boost::shared_ptr<udp_zero_copy> uhd::transport::udp_zero_copy::sptr

Member Function Documentation

◆ get_local_addr()

virtual std::string uhd::transport::udp_zero_copy::get_local_addr ( void ) const

pure virtual

Return the local IP address of the UDP connection as a dotted string.

Returns: IP address as a string or empty string if the IP address could not be identified.

◆ get_local_port()

virtual uint16_t uhd::transport::udp_zero_copy::get_local_port ( void ) const

pure virtual

Return the local port of the UDP connection

Port is in host byte order. No funny business here.

Returns: Port number or 0 if port number couldn't be identified.

◆ make()

static sptr uhd::transport::udp_zero_copy::make	(	const std::string &	addr,
		const std::string &	port,
		const zero_copy_xport_params &	default_buff_args,
		udp_zero_copy::buff_params &	buff_params_out,
		const device_addr_t &	hints = `device_addr_t()`
	)

static

Make a new zero copy udp transport: This transport is for sending and receiving between this host and a single endpoint. The primary usage for this transport will be data transactions. The underlying implementation is fast and platform specific.

The address will be resolved, it can be a host name or ipv4. The port will be resolved, it can be a port type or number.

Parameters

	addr	a string representing the destination address
	port	a string representing the destination port
	default_buff_args	Default values for frame sizes and num frames
[out]	buff_params_out	Returns the actual buffer sizes
	hints	optional parameters to pass to the underlying transport

The documentation for this class was generated from the following file:

include/uhd/transport/udp_zero_copy.hpp

Classes

Public Types

Public Member Functions