ZMQ_MSG_COPY(3) 0MQ Manual ZMQ_MSG_COPY(3)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.
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 manual page was written by the 0MQ community.
0MQ 2.2.0 04/04/2012 ZMQ_MSG_COPY(3)
Check Out this Related Man Page
ZMQ_MSG_CLOSE(3) 0MQ Manual ZMQ_MSG_CLOSE(3)NAME
zmq_msg_close - release 0MQ message
SYNOPSIS
int zmq_msg_close (zmq_msg_t *msg);
DESCRIPTION
The zmq_msg_close() function shall inform the 0MQ infrastructure that any resources associated with the message object referenced by msg
are no longer required and may be released. Actual release of resources associated with the message object shall be postponed by 0MQ until
all users of the message or underlying data buffer have indicated it is no longer required.
Applications should ensure that zmq_msg_close() is called once a message is no longer required, otherwise memory leaks may occur.
Caution
Never access zmq_msg_t members directly, instead always use the zmq_msg family of functions.
RETURN VALUE
The zmq_msg_close() 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_init(3)zmq_msg_init_size(3)zmq_msg_init_data(3)zmq_msg_data(3)zmq_msg_size(3)zmq(7)AUTHORS
This manual page was written by the 0MQ community.
0MQ 2.2.0 04/04/2012 ZMQ_MSG_CLOSE(3)
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