ZMQ_MSG_COPY
Section: 0MQ Manual (3)
Updated: 11/23/2012
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NAME
zmq_msg_copy - copy content of a message to another messageSYNOPSIS
int zmq_msg_copy (zmq_msg_t *dest, zmq_msg_t *src);
DESCRIPTION
The zmq_msg_copy() function shall copy the message object referenced by src to the message object referenced by dest. The original content of dest, if any, shall be released.
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Caution
The implementation may choose not to physically copy the message content, rather to share the underlying buffer between src and dest. Avoid modifying message content after a message has been copied with zmq_msg_copy(), doing so can result in undefined behaviour. If what you need is an actual hard copy, allocate a new message using zmq_msg_init_size() and copy the message content using memcpy().
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Caution
Never access zmq_msg_t members directly, instead always use the zmq_msg family of functions.
RETURN VALUE
The zmq_msg_copy() function shall return zero if successful. Otherwise it shall return -1 and set errno to one of the values defined below.
ERRORS
EFAULT
- Invalid message.
SEE ALSO
zmq_msg_move(3) zmq_msg_init(3) zmq_msg_init_size(3) zmq_msg_init_data(3) zmq_msg_close(3) zmq(7)
AUTHORS
This 0MQ manual page 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
Index
- NAME
- SYNOPSIS
- DESCRIPTION
- RETURN VALUE
- ERRORS
- SEE ALSO
- AUTHORS
- NOTES