diff options
Diffstat (limited to 'util.c')
| -rw-r--r-- | util.c | 25 |
1 files changed, 18 insertions, 7 deletions
@@ -239,6 +239,23 @@ void sock_probe_mem(struct ctx *c) close(s); } +/** + * timespec_diff_us() - Report difference in microseconds between two timestamps + * @a: Minuend timestamp + * @b: Subtrahend timestamp + * + * Return: difference in microseconds (wraps after 2^64 / 10^6s ~= 585k years) + */ +long long timespec_diff_us(const struct timespec *a, const struct timespec *b) +{ + if (a->tv_nsec < b->tv_nsec) { + return (b->tv_nsec - a->tv_nsec) / 1000 + + (a->tv_sec - b->tv_sec - 1) * 1000000; + } + + return (a->tv_nsec - b->tv_nsec) / 1000 + + (a->tv_sec - b->tv_sec) * 1000000; +} /** * timespec_diff_ms() - Report difference in milliseconds between two timestamps @@ -249,13 +266,7 @@ void sock_probe_mem(struct ctx *c) */ long timespec_diff_ms(const struct timespec *a, const struct timespec *b) { - if (a->tv_nsec < b->tv_nsec) { - return (b->tv_nsec - a->tv_nsec) / 1000000 + - (a->tv_sec - b->tv_sec - 1) * 1000; - } - - return (a->tv_nsec - b->tv_nsec) / 1000000 + - (a->tv_sec - b->tv_sec) * 1000; + return timespec_diff_us(a, b) / 1000; } /** |