Wrapper class for basic ZeroMQ context and socket management.

This singleton class wraps a couple of basic ZeroMQ tasks:

Creating, storing and eventually closing a ZeroMQ context.
Creating new sockets in the context.
Sending, receiving, encoding and decoding messages over sockets.

For convenience, it offers a number of template overloads that automatically encode all kinds of data types in ZeroMQ message objects.

Definition at line 122 of file ZeroMQSvc.h.

Public Types
enum	Encoding { Text = 0 , Binary }

Public Member Functions
void	close_context () const

zmq::context_t &	context () const
	Get context.

template<class T , typename std::enable_if<!std::is_pointer< T >::value &&ZMQ::Detail::is_trivial< T >::value, T >::type * = nullptr>
T	decode (const zmq::message_t &msg) const
	decode message with ZMQ, POD version

template<class T , typename std::enable_if< std::is_same< T, std::string >::value, T >::type * = nullptr>
std::string	decode (const zmq::message_t &msg) const
	decode ZMQ message, string version

zmq::message_t	encode (const char *item) const
	Encode string as a ZeroMQ message object.

zmq::message_t	encode (const std::string &item) const

template<class T , typename std::enable_if<!std::is_pointer< T >::value &&ZMQ::Detail::is_trivial< T >::value, T >::type * = nullptr>
zmq::message_t	encode (const T &item, std::function< size_t(const T &t)> sizeFun=ZMQ::defaultSizeOf< T >) const
	encode message to ZMQ

Encoding	encoding () const

template<class T , typename std::enable_if<!(std::is_same< zmq::message_t, T >::value), T >::type * = nullptr>
T	receive (zmq::socket_t &socket, zmq::recv_flags flags=zmq::recv_flags::none, bool *more=nullptr) const
	receive message with ZMQ, general version

template<class T , typename std::enable_if< std::is_same< zmq::message_t, T >::value, T >::type * = nullptr>
T	receive (zmq::socket_t &socket, zmq::recv_flags flags=zmq::recv_flags::none, bool *more=nullptr) const
	receive message with ZMQ

zmq::send_result_t	send (zmq::socket_t &socket, const char *item, zmq::send_flags flags=zmq::send_flags::none) const
	Send message over a socket.

template<class T , typename std::enable_if<!std::is_same< T, zmq::message_t >::value, T >::type * = nullptr>
zmq::send_result_t	send (zmq::socket_t &socket, const T &item, zmq::send_flags flags=zmq::send_flags::none) const
	Send message with ZMQ.

zmq::send_result_t	send (zmq::socket_t &socket, zmq::message_t &&msg, zmq::send_flags flags=zmq::send_flags::none) const

zmq::send_result_t	send (zmq::socket_t &socket, zmq::message_t &msg, zmq::send_flags flags=zmq::send_flags::none) const

void	setEncoding (const Encoding &e)
	Set encoding mode.

zmq::socket_t	socket (zmq::socket_type type) const
	Create and return a new socket.

zmq::socket_t *	socket_ptr (zmq::socket_type type) const
	Create and return a new socket by pointer.

Private Attributes
zmq::context_t *	m_context = nullptr

Encoding	m_enc = Text

#include </home/sftnight/build/workspace/root-makedoc-v628/rootspi/rdoc/src/v6-28-00-patches/roofit/roofitZMQ/res/RooFit_ZMQ/ZeroMQSvc.h>

Member Enumeration Documentation

◆ Encoding

enum ZeroMQSvc::Encoding

Enumerator
Text
Binary

Definition at line 128 of file ZeroMQSvc.h.

Member Function Documentation

◆ close_context()

void ZeroMQSvc::close_context ( ) const

Definition at line 114 of file ZeroMQSvc.cpp.

◆ context()

zmq::context_t & ZeroMQSvc::context ( ) const

Get context.

Creates a context if it has not yet been created and returns a reference to it.

Definition at line 63 of file ZeroMQSvc.cpp.

◆ decode() [1/2]

template<class T , typename std::enable_if<!std::is_pointer< T >::value &&ZMQ::Detail::is_trivial< T >::value, T >::type * = nullptr>

T ZeroMQSvc::decode ( const zmq::message_t & msg ) const

inline

decode message with ZMQ, POD version

Definition at line 140 of file ZeroMQSvc.h.

◆ decode() [2/2]

template<class T , typename std::enable_if< std::is_same< T, std::string >::value, T >::type * = nullptr>

std::string ZeroMQSvc::decode ( const zmq::message_t & msg ) const

inline

decode ZMQ message, string version

Definition at line 149 of file ZeroMQSvc.h.

◆ encode() [1/3]

zmq::message_t ZeroMQSvc::encode ( const char * item ) const

Encode string as a ZeroMQ message object.

Parameters

[in] item String.

Definition at line 128 of file ZeroMQSvc.cpp.

◆ encode() [2/3]

zmq::message_t ZeroMQSvc::encode ( const std::string & item ) const

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 137 of file ZeroMQSvc.cpp.

◆ encode() [3/3]

template<class T , typename std::enable_if<!std::is_pointer< T >::value &&ZMQ::Detail::is_trivial< T >::value, T >::type * = nullptr>

zmq::message_t ZeroMQSvc::encode	(	const T &	item,
		std::function< size_t(const T &t)>	sizeFun = `ZMQ::defaultSizeOf<T>`
	)		const

inline

encode message to ZMQ

Definition at line 192 of file ZeroMQSvc.h.

◆ encoding()

ZeroMQSvc::Encoding ZeroMQSvc::encoding ( ) const

Definition at line 43 of file ZeroMQSvc.cpp.

◆ receive() [1/2]

template<class T , typename std::enable_if<!(std::is_same< zmq::message_t, T >::value), T >::type * = nullptr>

T ZeroMQSvc::receive	(	zmq::socket_t &	socket,
		zmq::recv_flags	flags = `zmq::recv_flags::none`,
		bool *	more = `nullptr`
	)		const

inline

receive message with ZMQ, general version

Definition at line 159 of file ZeroMQSvc.h.

◆ receive() [2/2]

template<class T , typename std::enable_if< std::is_same< zmq::message_t, T >::value, T >::type * = nullptr>

T ZeroMQSvc::receive	(	zmq::socket_t &	socket,
		zmq::recv_flags	flags = `zmq::recv_flags::none`,
		bool *	more = `nullptr`
	)		const

inline

receive message with ZMQ

Definition at line 176 of file ZeroMQSvc.h.

◆ send() [1/4]

zmq::send_result_t ZeroMQSvc::send	(	zmq::socket_t &	socket,
		const char *	item,
		zmq::send_flags	flags = `zmq::send_flags::none`
	)		const

Send message over a socket.

Parameters

[in]	socket	Socket.
[in]	item	Message to send over.
[in]	flags	Flags to send. See http://api.zeromq.org/master:zmq-send for possible flags and the cppzmq API for the type-safe equivalents in the zmq::send_flags enum class.

Returns: An optional of type zmq::send_result_t that contains the number of bytes sent if successful, and is empty if EAGAIN was received, which probably means you should try again.

Definition at line 153 of file ZeroMQSvc.cpp.

◆ send() [2/4]

template<class T , typename std::enable_if<!std::is_same< T, zmq::message_t >::value, T >::type * = nullptr>

zmq::send_result_t ZeroMQSvc::send	(	zmq::socket_t &	socket,
		const T &	item,
		zmq::send_flags	flags = `zmq::send_flags::none`
	)		const

inline

Send message with ZMQ.

Definition at line 205 of file ZeroMQSvc.h.

◆ send() [3/4]

zmq::send_result_t ZeroMQSvc::send	(	zmq::socket_t &	socket,
		zmq::message_t &&	msg,
		zmq::send_flags	flags = `zmq::send_flags::none`
	)		const

Definition at line 170 of file ZeroMQSvc.cpp.

◆ send() [4/4]

zmq::send_result_t ZeroMQSvc::send	(	zmq::socket_t &	socket,
		zmq::message_t &	msg,
		zmq::send_flags	flags = `zmq::send_flags::none`
	)		const

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 161 of file ZeroMQSvc.cpp.

◆ setEncoding()

void ZeroMQSvc::setEncoding ( const Encoding & e )

Set encoding mode.

Parameters

[in] e Encoding mode; either Text or Binary.

Definition at line 53 of file ZeroMQSvc.cpp.

◆ socket()

zmq::socket_t ZeroMQSvc::socket ( zmq::socket_type type ) const

Create and return a new socket.

Parameters

[in] type Type of the socket. See http://api.zeromq.org/master:zmq-socket for possible values.

Returns: The socket object.

Definition at line 84 of file ZeroMQSvc.cpp.

◆ socket_ptr()

zmq::socket_t * ZeroMQSvc::socket_ptr ( zmq::socket_type type ) const

Create and return a new socket by pointer.

Parameters

[in] type Type of the socket. See http://api.zeromq.org/master:zmq-socket for possible values.

Returns: A raw pointer to the socket object. Note: the caller must take ownership!

Definition at line 102 of file ZeroMQSvc.cpp.

Member Data Documentation

◆ m_context

zmq::context_t* ZeroMQSvc::m_context = nullptr

mutableprivate

Definition at line 219 of file ZeroMQSvc.h.

◆ m_enc

Encoding ZeroMQSvc::m_enc = Text

private

Definition at line 218 of file ZeroMQSvc.h.

roofit/roofitZMQ/res/RooFit_ZMQ/ZeroMQSvc.h

roofit/roofitZMQ/src/ZeroMQSvc.cpp

Public Types

Public Member Functions

Private Attributes

Member Enumeration Documentation

◆ Encoding

Member Function Documentation

◆ close_context()

◆ context()

◆ decode() [1/2]

◆ decode() [2/2]

◆ encode() [1/3]

◆ encode() [2/3]

◆ encode() [3/3]

◆ encoding()

◆ receive() [1/2]

◆ receive() [2/2]

◆ send() [1/4]

◆ send() [2/4]

◆ send() [3/4]

◆ send() [4/4]

◆ setEncoding()

◆ socket()

◆ socket_ptr()

Member Data Documentation

◆ m_context

◆ m_enc