Provided by: libxs-dev_1.2.0-2_amd64
xs_setctxopt - set Crossroads context options
int xs_setctxopt (void *context, int option_name, const void *option_value, size_t option_len);
The xs_setctxopt() function shall set the option specified by the option_name argument to the value pointed to by the option_value argument, for the Crossroads context pointed to by the context argument. The option_len argument is the size of the option value in bytes. Caution Context options take effect only if set with xs_setctxopt() prior to creating the first socket in a given context with xs_socket(). The following options can be set with the xs_setctxopt() function: XS_MAX_SOCKETS: Set maximum number of sockets The XS_MAX_SOCKETS option shall set the maximum nuber of sockets that can be simultaneously active in the given context. Option value type int Option value unit sockets Default value 512 XS_IO_THREADS: Set number of worker threads The XS_IO_THREADS option shall set the size of the thread pool created by the given context to handle I/O operations. The minimum value for this option is 1. Option value type int Option value unit threads Default value 1
The xs_setctxopt() function shall return zero if successful. Otherwise it shall return -1 and set errno to one of the values defined below.
EINVAL The requested option option_name is unknown, or the requested option_len or option_value is invalid. EFAULT The provided context was invalid.
Setting the number of I/O threads for a context to four.. void *context = xs_init (); int io_threads = 4; rc = xs_setctxopt (context, XS_IO_THREADS, &io_threads, sizeof (io_threads)); assert (rc == 0); /* The above call MUST be called before any socket is created in context */ void *socket = xs_socket (context, XS_PUB);
The Crossroads documentation was written by Martin Sustrik <firstname.lastname@example.org> and Martin Lucina <email@example.com>.