mirror of
https://github.com/zeromq/libzmq.git
synced 2024-12-13 18:55:10 +01:00
62 lines
1.3 KiB
Plaintext
62 lines
1.3 KiB
Plaintext
zmq_init(3)
|
|
===========
|
|
|
|
|
|
NAME
|
|
----
|
|
zmq_init - initialises 0MQ context
|
|
|
|
|
|
SYNOPSIS
|
|
--------
|
|
'void *zmq_init (int app_threads, int io_threads, int flags);'
|
|
|
|
|
|
DESCRIPTION
|
|
-----------
|
|
Initialises 0MQ context. 'app_threads' specifies maximal number of application
|
|
threads that can own open sockets at the same time. At least one application
|
|
thread should be defined. 'io_threads' specifies the size of thread pool to
|
|
handle I/O operations. The value shouldn't be negative. Zero can be used in
|
|
case only in-process messaging is going to be used, i.e. there will be no I/O
|
|
traffic.
|
|
|
|
The 'flags' argument is a combination of the flags defined below:
|
|
|
|
*ZMQ_POLL*::
|
|
flag specifying that the sockets within this context should be pollable
|
|
(see linkzmq:zmq_poll[3]). Pollable sockets may add a little latency to the
|
|
message transfer when compared to non-pollable sockets.
|
|
|
|
|
|
RETURN VALUE
|
|
------------
|
|
Function returns context handle is successful. Otherwise it returns NULL and
|
|
sets errno to one of the values below.
|
|
|
|
|
|
ERRORS
|
|
------
|
|
*EINVAL*::
|
|
there's less than one application thread allocated, or number of I/O
|
|
threads is negative.
|
|
|
|
|
|
EXAMPLE
|
|
-------
|
|
----
|
|
void *ctx = zmq_init (1, 1, ZMQ_POLL);
|
|
assert (ctx);
|
|
----
|
|
|
|
|
|
SEE ALSO
|
|
--------
|
|
linkzmq:zmq_term[3]
|
|
linkzmq:zmq_socket[3]
|
|
|
|
|
|
AUTHOR
|
|
------
|
|
Martin Sustrik <sustrik at 250bpm dot com>
|