POSIX_CLOCK_SELECTION

POSIX Clock Selection option group. More...

Functions
int	clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *rqtp, struct timespec *rmtp)
	High-resolution sleep against a specified clock.
int	pthread_cond_clockwait (pthread_cond_t *ZRESTRICT cond, pthread_mutex_t *ZRESTRICT mutex, clockid_t clock_id, const struct timespec *ZRESTRICT abstime)
	Wait on a condition variable with a specific clock.

Detailed Description

POSIX Clock Selection option group.

Function Documentation

clock_nanosleep()

int clock_nanosleep	(	clockid_t	clock_id,
		int	flags,
		const struct timespec *	rqtp,
		struct timespec *	rmtp
	)

High-resolution sleep against a specified clock.

Parameters

clock_id	Clock to measure the sleep against.
flags	0 for a relative sleep, TIMER_ABSTIME for an absolute wakeup time.
rqtp	Requested sleep duration or absolute wakeup time.
rmtp	Output: remaining time if interrupted (only for relative sleeps), or NULL.

Returns

0 on success, or a positive error number on failure.

See also

https://pubs.opengroup.org/onlinepubs/9699919799/functions/clock_nanosleep.html

pthread_cond_clockwait()

int pthread_cond_clockwait	(	pthread_cond_t *ZRESTRICT	cond,
		pthread_mutex_t *ZRESTRICT	mutex,
		clockid_t	clock_id,
		const struct timespec *ZRESTRICT	abstime
	)

Wait on a condition variable with a specific clock.

Parameters

cond	Condition variable.
mutex	Associated mutex (must be locked by the caller).
clock_id	Clock used to interpret abstime.
abstime	Absolute timeout.

Returns

0 on success, ETIMEDOUT on timeout, or a positive error number on failure.

See also

https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_cond_clockwait.html