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util/time: add timespec_from_nsec

This commit is contained in:
Simon Ser 2020-12-13 12:53:43 +01:00
parent 94fda895ac
commit f0c1b32120
2 changed files with 10 additions and 0 deletions
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5
include/util/time.h
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@ -13,6 +13,11 @@ uint32_t get_current_time_msec(void);
*/
int64_t timespec_to_msec(const struct timespec *a);
/**
* Convert nanoseconds to a timespec.
*/
void timespec_from_nsec(struct timespec *r, int64_t nsec);
/**
* Subtracts timespec `b` from timespec `a`, and stores the difference in `r`.
*/

5
util/time.c
View File

@ -10,6 +10,11 @@ int64_t timespec_to_msec(const struct timespec *a) {
return (int64_t)a->tv_sec * 1000 + a->tv_nsec / 1000000;
}
void timespec_from_nsec(struct timespec *r, int64_t nsec) {
r->tv_sec = nsec / NSEC_PER_SEC;
r->tv_nsec = nsec % NSEC_PER_SEC;
}
uint32_t get_current_time_msec(void) {
struct timespec now;
clock_gettime(CLOCK_MONOTONIC, &now);