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-.TH zmq_init 3 "" "(c)2007-2010 iMatix Corporation" "0MQ User Manuals"
-.SH NAME
-zmq_init \- initialises 0MQ context
-.SH SYNOPSIS
-.B void *zmq_init (int app_threads, int io_threads, int flags);
-.SH DESCRIPTION
-Initialises 0MQ context.
-.IR 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.
-.IR 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.
-
-.IR flags
-argument is a combination of the flags defined below:
-.IP "\fBZMQ_POLL\fP"
-flag specifying that the sockets within this context should be pollable (see
-.IR zmq_poll
-). Pollable sockets may add a little latency to the message transfer when
-compared to non-pollable sockets.
-
-.SH RETURN VALUE
-Function returns context handle is successful. Otherwise it returns NULL and
-sets errno to one of the values below.
-.SH ERRORS
-.IP "\fBEINVAL\fP"
-there's less than one application thread allocated, or number of I/O threads
-is negative.
-.SH EXAMPLE
-.nf
-void *ctx = zmq_init (1, 1, ZMQ_POLL);
-assert (ctx);
-.fi
-.SH SEE ALSO
-.BR zmq_term (3)
-.BR zmq_socket (3)
-.SH AUTHOR
-Martin Sustrik <sustrik at 250bpm dot com>