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ZMQ_CTX_GET(3)                    0MQ Manual                    ZMQ_CTX_GET(3)

NAME

zmq_ctx_get - get context options

SYNOPSIS

int zmq_ctx_get (void *context, int option_name);

DESCRIPTION

The zmq_ctx_get() function shall return the option specified by the option_name argument. The zmq_ctx_get() function accepts the following option names: ZMQ_IO_THREADS: Get number of I/O threads The ZMQ_IO_THREADS argument returns the size of the 0MQ thread pool for this context. ZMQ_MAX_SOCKETS: Get maximum number of sockets The ZMQ_MAX_SOCKETS argument returns the maximum number of sockets allowed for this context. ZMQ_SOCKET_LIMIT: Get largest configurable number of sockets The ZMQ_SOCKET_LIMIT argument returns the largest number of sockets that zmq_ctx_set(3) will accept. ZMQ_IPV6: Set IPv6 option The ZMQ_IPV6 argument returns the IPv6 option for the context.

RETURN VALUE

The zmq_ctx_get() function returns a value of 0 or greater 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_set(3) zmq(7)

AUTHORS

This page was written by the 0MQ community. To make a change please read the 0MQ Contribution Policy at http://www.zeromq.org/docs:contributing. 0MQ 4.1.0 08/17/2015 ZMQ_CTX_GET(3)

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