Serialization functions for ZMQ (v3

Detailed Description

or above) (in #include <mrpt/utils/serialization_zmq.h>)

Collaboration diagram for Serialization functions for ZMQ (v3:

Namespaces
	mrpt::utils::internal

Functions
template<typename ZMQ_SOCKET_TYPE >
void	mrpt::utils::mrpt_send_to_zmq (ZMQ_SOCKET_TYPE zmq_socket, const mrpt::utils::CSerializable &obj, const size_t max_packet_len=0)
	Send an MRPT object to a ZMQ socket. More...
template<typename ZMQ_SOCKET_TYPE , typename VECTOR_MSG_T >
bool	mrpt::utils::mrpt_recv_from_zmq_buf (ZMQ_SOCKET_TYPE zmq_socket, VECTOR_MSG_T &out_lst_msgs, mrpt::utils::CMemoryStream &target_buf, bool dont_wait, size_t *rx_obj_length_in_bytes)
	Users may normally call mrpt_recv_from_zmq() and mrpt_recv_from_zmq_into(). More...
template<typename ZMQ_SOCKET_TYPE >
mrpt::utils::CSerializable::Ptr	mrpt::utils::mrpt_recv_from_zmq (ZMQ_SOCKET_TYPE zmq_socket, bool dont_wait=false, size_t *rx_obj_length_in_bytes=nullptr)
	Receives an MRPT object from a ZMQ socket, determining the type of the object on-the-fly. More...
template<typename ZMQ_SOCKET_TYPE >
bool	mrpt::utils::mrpt_recv_from_zmq_into (ZMQ_SOCKET_TYPE zmq_socket, mrpt::utils::CSerializable &target_object, bool dont_wait=false, size_t *rx_obj_length_in_bytes=nullptr)
	Like mrpt_recv_from_zmq() but without dynamically allocating the received object, more efficient to use if the type of the received object is known in advance. More...

Function Documentation

mrpt_recv_from_zmq()

template<typename ZMQ_SOCKET_TYPE >

mrpt::utils::CSerializable::Ptr mrpt::utils::mrpt_recv_from_zmq	(	ZMQ_SOCKET_TYPE	zmq_socket,
		bool	dont_wait = false,
		size_t *	rx_obj_length_in_bytes = nullptr
	)

Receives an MRPT object from a ZMQ socket, determining the type of the object on-the-fly.

Parameters

[in]	zmq_socket	The zmq socket object.
[in]	dont_wait	If true, will fail if there is no data ready to be read. If false (default) this function will block until data arrives.
[out]	rx_obj_length_in_bytes	If non-nullptr, the object length will be stored here.

Returns

An empty smart pointer if there was any error. The received object if all went OK.

Note

Including <mrpt/utils/serialization_zmq.h> requires libzmq to be available in your system and linked to your user code. This function can be used even if MRPT was built without ZMQ support, thanks to the use of templates.

Exceptions

std::exception

If the object finds any critical error during de-serialization.

See also

mrpt_recv_from_zmq_into

Note

See examples of usage in https://github.com/MRPT/mrpt/tree/master/doc/mrpt-zeromq-example

Definition at line 175 of file serialization_zmq.h.

References mrpt::utils::internal::free_zmq_msg_lst(), mrpt::utils::mrpt_recv_from_zmq_buf(), and mrpt::utils::CStream::ReadObject().

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mrpt_recv_from_zmq_buf()

template<typename ZMQ_SOCKET_TYPE , typename VECTOR_MSG_T >

bool mrpt::utils::mrpt_recv_from_zmq_buf	(	ZMQ_SOCKET_TYPE	zmq_socket,
		VECTOR_MSG_T &	out_lst_msgs,
		mrpt::utils::CMemoryStream &	target_buf,
		bool	dont_wait,
		size_t *	rx_obj_length_in_bytes
	)

Users may normally call mrpt_recv_from_zmq() and mrpt_recv_from_zmq_into().

This function just stores the received data into a memory buffer without parsing it into an MRPT object.

Returns

false on any error

Definition at line 97 of file serialization_zmq.h.

References mrpt::utils::CMemoryStream::assignMemoryNotOwn(), mrpt::utils::CMemoryStream::Clear(), mrpt::utils::CMemoryStream::getTotalBytesCount(), mrpt::utils::CMemoryStream::Seek(), and mrpt::utils::CStream::WriteBuffer().

Referenced by mrpt::utils::mrpt_recv_from_zmq(), and mrpt::utils::mrpt_recv_from_zmq_into().

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mrpt_recv_from_zmq_into()

template<typename ZMQ_SOCKET_TYPE >

bool mrpt::utils::mrpt_recv_from_zmq_into	(	ZMQ_SOCKET_TYPE	zmq_socket,
		mrpt::utils::CSerializable &	target_object,
		bool	dont_wait = false,
		size_t *	rx_obj_length_in_bytes = nullptr
	)

Like mrpt_recv_from_zmq() but without dynamically allocating the received object, more efficient to use if the type of the received object is known in advance.

Parameters

[in]

target_object

The received object will be stored here. An exception will be raised upon type mismatch.

Returns

true if all was OK, false on any ZMQ error.

See also

mrpt_recv_from_zmq() for details on the rest of parameters.

Note

See examples of usage in https://github.com/MRPT/mrpt/tree/master/doc/mrpt-zeromq-example

Definition at line 203 of file serialization_zmq.h.

References mrpt::utils::internal::free_zmq_msg_lst(), mrpt::utils::mrpt_recv_from_zmq_buf(), and mrpt::utils::CStream::ReadObject().

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mrpt_send_to_zmq()

template<typename ZMQ_SOCKET_TYPE >

void mrpt::utils::mrpt_send_to_zmq	(	ZMQ_SOCKET_TYPE	zmq_socket,
		const mrpt::utils::CSerializable &	obj,
		const size_t	max_packet_len = 0
	)

Send an MRPT object to a ZMQ socket.

Parameters

[in]	obj	The object to be serialized and sent to the socket.
[in]	zmq_socket	The zmq socket object.
[in]	max_packet_len	The object will be split into a series of ZMQ "message parts" of this maximum length (in bytes). Default=0, which means do not split in parts.

Note

Including <mrpt/utils/serialization_zmq.h> requires libzmq to be available in your system and linked to your user code. This function can be used even if MRPT was built without ZMQ support, thanks to the use of templates.

Exceptions

std::exception

If the object finds any critical error during serialization or on ZMQ errors.

Note

See examples of usage in https://github.com/MRPT/mrpt/tree/master/doc/mrpt-zeromq-example

Definition at line 41 of file serialization_zmq.h.

References mrpt::utils::internal::TFreeFnDataForZMQ::buf, mrpt::utils::internal::TFreeFnDataForZMQ::do_free, mrpt::utils::internal::free_fn_for_zmq(), mrpt::utils::CMemoryStream::getRawBufferData(), mrpt::utils::CMemoryStream::getTotalBytesCount(), and mrpt::utils::CStream::WriteObject().

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