WIP: fix clock_settime 8-1 test case #927
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Signed-off-by: Dante Zhang <zhangyet@gmail.com>
metan-ucw
reviewed
May 25, 2022
| @@ -36,8 +36,5 @@ static inline long timespec_nsec_diff(struct timespec *t1, struct timespec *t2) | |||
| sec_diff = t1->tv_sec - t2->tv_sec; | |||
| nsec_diff = t1->tv_nsec - t2->tv_nsec; | |||
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| if (sec_diff > 1 || (sec_diff == 1 && nsec_diff >= 0)) | |||
| return NSEC_IN_SEC; | |||
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I do not think that this is a good idea to remove this check as it is. The function returns long, which is 32bit on x86 which means that the result will overflow if the difference is slightly over 2 seconds.
It would make much more sense to add timespec_msec_diff() function that would return difference in miliseconds, which would be granular enough for the check in the test, but will not overflow like this, since we can store difference worth of days in 32bit integer in miliseconds.
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Compare with nanoseconds
Signed-off-by: Dante Zhang zhangyet@gmail.com