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support times

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This commit is contained in:
Tomoki Shirasawa
2016-02-18 13:14:18 +09:00
parent a997af71be
commit eba2be8a35
10 changed files with 159 additions and 3 deletions
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22
kernel/include/time.h
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@@ -53,5 +53,27 @@ struct timezone
int tz_dsttime; /* Nonzero if DST is ever in effect. */
};
static inline void
ts_add(struct timespec *ats, const struct timespec *bts)
{
ats->tv_sec += bts->tv_sec;
ats->tv_nsec += bts->tv_nsec;
while(ats->tv_nsec >= 1000000000){
ats->tv_sec++;
ats->tv_nsec -= 1000000000;
}
}
static inline void
ts_sub(struct timespec *ats, const struct timespec *bts)
{
ats->tv_sec -= bts->tv_sec;
ats->tv_nsec -= bts->tv_nsec;
while(ats->tv_nsec < 0){
ats->tv_sec--;
ats->tv_nsec += 1000000000;
}
}
#endif // __TIME_H