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timespec: Pull in timespec_after and timespec_add from mesa

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Signed-off-by: Sebastian Wick <sebastian.wick@redhat.com>
This commit is contained in:
Sebastian Wick 2024-02-07 18:51:39 +01:00 • committed by Derek Foreman
parent 37469d5ced
commit 9d5de6062b
1 changed files with 34 additions and 0 deletions
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34
src/timespec-util.h
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@ -256,4 +256,38 @@ millihz_to_nsec(uint32_t mhz)
return 1000000000000LL / mhz;
}
/**
* Checks whether a timespec value is after another
*
* \param a[in] timespec to compare
* \param b[in] timespec to compare
* \return whether a is after b
*/
static inline bool
timespec_after(const struct timespec *a, const struct timespec *b)
{
return (a->tv_sec == b->tv_sec) ?
(a->tv_nsec > b->tv_nsec) :
(a->tv_sec > b->tv_sec);
}
/**
* Add timespecs
*
* \param r[out] result: a + b
* \param a[in] operand
* \param b[in] operand
*/
static inline void
timespec_add(struct timespec *r,
const struct timespec *a, const struct timespec *b)
{
r->tv_sec = a->tv_sec + b->tv_sec;
r->tv_nsec = a->tv_nsec + b->tv_nsec;
if (r->tv_nsec > NSEC_PER_SEC) {
r->tv_sec++;
r->tv_nsec -= NSEC_PER_SEC;
}
}
#endif /* TIMESPEC_UTIL_H */