io_uring_sqe_set_data64(3) — Linux manual page


io_uring_sqe_set_data(3)     liburing Manual    io_uring_sqe_set_data(3)

NAME         top

       io_uring_sqe_set_data - set user data for submission queue event

SYNOPSIS         top

       #include <liburing.h>

       void io_uring_sqe_set_data(struct io_uring_sqe *sqe,
                                  void *user_data);

       void io_uring_sqe_set_data64(struct io_uring_sqe *sqe,
                                    __u64 data);

DESCRIPTION         top

       The io_uring_sqe_set_data(3) function stores a user_data pointer
       with the submission queue entry sqe.

       The io_uring_sqe_set_data64(3) function stores a 64-bit data
       value with the submission queue entry sqe.

       After the caller has requested a submission queue entry (SQE)
       with io_uring_get_sqe(3), they can associate a data pointer or
       value with the SQE. Once the completion arrives, the function
       io_uring_cqe_get_data(3) or io_uring_cqe_get_data64(3) can be
       called to retrieve the data pointer or value associated with the
       submitted request.

RETURN VALUE         top


SEE ALSO         top

       io_uring_get_sqe(3), io_uring_cqe_get_data(3)

COLOPHON         top

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       ⟨⟩ on 2023-12-22.  (At that
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liburing-2.1                November 15, 2021   io_uring_sqe_set_data(3)

Pages that refer to this page: io_uring_cqe_get_data(3)io_uring_cqe_get_data64(3)io_uring_get_sqe(3)io_uring_sqe_set_data(3)io_uring_sqe_set_data64(3)