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zmq_msg_init
Langue: en
Version: 06/04/2010 (fedora - 01/12/10)
Section: 3 (Bibliothèques de fonctions)
NAME
zmq_msg_init - initialise empty 0MQ messageSYNOPSIS
int zmq_msg_init (zmq_msg_t *msg);
DESCRIPTION
The zmq_msg_init() function shall initialise the message object referenced by msg to represent an empty message. This function is most useful when called before receiving a message with zmq_recv().
Caution
Never access zmq_msg_t members directly, instead always use the zmq_msg family of functions.
Caution
The functions zmq_msg_init(), zmq_msg_init_data() and zmq_msg_init_size() are mutually exclusive. Never initialize the same zmq_msg_t twice.
RETURN VALUE
The zmq_msg_init() function shall return zero if successful. Otherwise it shall return -1 and set errno to one of the values defined below.
ERRORS
No errors are defined.
EXAMPLE
Receiving a message from a socket.
-
zmq_msg_t msg; rc = zmq_msg_init (&msg); assert (rc == 0); rc = zmq_recv (socket, &msg, 0); assert (rc == 0);
SEE ALSO
zmq_msg_init_size(3) zmq_msg_init_data(3) zmq_msg_close(3) zmq_msg_data(3) zmq_msg_size(3) zmq(7)
AUTHORS
The 0MQ documentation was written by Martin Sustrik <m[blue]sustrik@250bpm.comm[][1]> and Martin Lucina <m[blue]mato@kotelna.skm[][2]>.
NOTES
- 1.
- sustrik@250bpm.com
- mailto:sustrik@250bpm.com
- 2.
- mato@kotelna.sk
- mailto:mato@kotelna.sk
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