NAME

       io_uring_queue_init - setup io_uring submission and completion queues

SYNOPSIS

       #include <liburing.h>

       int io_uring_queue_init(unsigned entries, struct io_uring *ring,
                               unsigned flags);

DESCRIPTION

       The  io_uring_queue_init()  function executes the io_uring_setup syscall to initialize the submission and
       completion queues in the kernel with at least entries entries and then maps the resulting file descriptor
       to memory shared between the application and the kernel.

       On success io_uring_queue_init() returns 0 and ring will  point  to  the  shared  memory  containing  the
       io_uring queues. On failure -errno is returned.

       flags will be passed through to the io_uring_setup syscall (see io_uring_setup(2)).

       On   success,   the   resources   held   by   ring  should  be  released  via  a  corresponding  call  to
       io_uring_queue_exit(3).

RETURN VALUE

       io_uring_queue_init(3) returns 0 on success and -errno on failure.

SEE ALSO

       io_uring_setup(2), mmap(2), io_uring_queue_exit(3)

liburing-0.7                                      July 10, 2020                           io_uring_queue_init(3)