NAME¶

io_uring_register_clock - set clock source for event waiting

SYNOPSIS¶

#include <liburing.h>

int io_uring_register_clock(struct io_uring *ring,
                            struct io_uring_clock_register *arg);

DESCRIPTION¶

The io_uring_register_clock(3) function registers which clock source should be used by io_uring, when an application waits for event completions. The ring argument should point to the ring in question, and the arg argument should be a pointer to a struct io_uring_clock_register .

The arg argument must be filled in with the appropriate information. It looks as follows:

struct io_uring_clock_register {


    __u32 clockid;


    __u32 __resv[3];
};

The clockid field must contain the clock source, with valid sources being:

CLOCK_MONOTONIC

a nonsettable system-wide clock that represents monotonic time.

CLOCK_BOOTTIME

A nonsettable system-wide clock that is identical to CLOCK_MONOTONIC , except that is also icnludes any time that the system is suspended.

See clock_gettime(3) for more details.

The __resv fields must be filled with zeroes.

Available since 6.12.

RETURN VALUE¶

On success io_uring_register_clock(3) returns 0. On failure it returns -errno.

SEE ALSO¶

clock_gettime(3), io_uring_register(2), io_uring_wait_cqe(3), io_uring_wait_cqe_timeout(3),