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authorMartin Sustrik <sustrik@250bpm.com>2012-02-16 10:01:47 +0900
committerMartin Sustrik <sustrik@250bpm.com>2012-02-16 10:01:47 +0900
commit4a7aad06d95701cf232198093ce396dcdbb53e5b (patch)
tree8ced8929e603a179d9434099244dfd782e705d5e /doc/xs_msg_init.txt
parent1fc63e4dbcf1438eb571d720f57be68852f820f7 (diff)
ZeroMQ renamed to Crossroads
Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
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+xs_msg_init(3)
+==============
+
+
+NAME
+----
+xs_msg_init - initialise empty Crossroads message
+
+
+SYNOPSIS
+--------
+*int xs_msg_init (xs_msg_t '*msg');*
+
+
+DESCRIPTION
+-----------
+The _xs_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 _xs_recv()_.
+
+CAUTION: Never access 'xs_msg_t' members directly, instead always use the
+_xs_msg_ family of functions.
+
+CAUTION: The functions _xs_msg_init()_, _xs_msg_init_data()_ and
+_xs_msg_init_size()_ are mutually exclusive. Never initialize the same
+'xs_msg_t' twice.
+
+
+RETURN VALUE
+------------
+The _xs_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
+----
+xs_msg_t msg;
+rc = xs_msg_init (&msg);
+assert (rc == 0);
+rc = xs_recv (socket, &msg, 0);
+assert (rc == 0);
+----
+
+
+SEE ALSO
+--------
+linkxs:xs_msg_init_size[3]
+linkxs:xs_msg_init_data[3]
+linkxs:xs_msg_close[3]
+linkxs:xs_msg_data[3]
+linkxs:xs_msg_size[3]
+linkxs:xs[7]
+
+
+AUTHORS
+-------
+The Crossroads documentation was written by Martin Sustrik <sustrik@250bpm.com>
+and Martin Lucina <martin@lucina.net>.