NAME¶
zmq_ctx_set - set context options
SYNOPSIS¶
int zmq_ctx_set (void *context, int
option_name , int option_value);
DESCRIPTION¶
The
zmq_ctx_set() function shall set the option specified by the
option_name argument to the value of the
option_value argument.
The
zmq_ctx_set() function accepts the following options:
ZMQ_IO_THREADS: Set number of I/O threads¶
The
ZMQ_IO_THREADS argument specifies the size of the 0MQ thread pool to
handle I/O operations. If your application is using only the
inproc
transport for messaging you may set this to zero, otherwise set it to at least
one. This option only applies before creating any sockets on the context.
ZMQ_MAX_SOCKETS: Set maximum number of sockets¶
The
ZMQ_MAX_SOCKETS argument sets the maximum number of sockets allowed
on the context.
RETURN VALUE¶
The
zmq_ctx_set() function returns zero if successful. Otherwise it
returns -1 and sets
errno to one of the values defined below.
ERRORS¶
EINVAL
The requested option option_name is
unknown.
EXAMPLE¶
Setting a limit on the number of sockets.
void *context = zmq_ctx_new ();
zmq_ctx_set (context, ZMQ_MAX_SOCKETS, 256);
int max_sockets = zmq_ctx_get (context, ZMQ_MAX_SOCKETS);
assert (max_sockets == 256);
SEE ALSO¶
zmq_ctx_get(3) zmq(7)
AUTHORS¶
This 0MQ manual page was written by Pieter Hintjens <
ph@imatix.com[1]>
NOTES¶
- 1.
- ph@imatix.com
mailto:ph@imatix.com