NAME
zmq_msg_copy - copy content of a message to another message
SYNOPSIS
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.
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(). |
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.
AUTHORS
This 0MQ manual page was written by Martin Sustrik <sustrik@250bpm.com> and Martin Lucina <mato@kotelna.sk>.