io_uring_register_clock - Man Page
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),