diff options
| author | Lisa Nguyen <lisa.nguyen@linaro.org> | 2016-06-21 11:13:12 -0700 |
|---|---|---|
| committer | Lisa Nguyen <lisa.nguyen@linaro.org> | 2016-09-12 16:40:13 -0700 |
| commit | aec8851f5f6583666396fa54dd598d91ef5b5ee3 (patch) | |
| tree | 3dcaa56f407937f3197f9718700704c106b30aaa | |
| parent | 84479a38849f2b0abee9a2c2841afa8da15b08eb (diff) | |
nanosleep: recalculate the amount of time to sleep
In cases where the total number of nanoseconds equal or
exceed the MAX_VALUE of the nanosleep function, recalculate
and reassign the new values to tv_sec and tv_nsec.
Signed-off-by: Lisa Nguyen <lisa.nguyen@linaro.org>
| -rw-r--r-- | utils/nanosleep.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/utils/nanosleep.c b/utils/nanosleep.c index 27f197e..0088eb4 100644 --- a/utils/nanosleep.c +++ b/utils/nanosleep.c @@ -27,6 +27,8 @@ #include <errno.h> #include <time.h> +#define SECOND 1000000000 /* in nanoseconds */ + int main(int argc, char *argv[]) { struct timespec req = { 0 }, rem = { 0 }; @@ -36,7 +38,13 @@ int main(int argc, char *argv[]) return 1; } - req.tv_nsec = atoi(argv[1]); + int total_nsec = atoi(argv[1]); + + /* if total of nanoseconds equals or exceeds one second */ + if (total_nsec >= SECOND) { + req.tv_sec = total_nsec / SECOND; + req.tv_nsec = total_nsec % SECOND; + } for (;;) { if (!nanosleep(&req, &rem)) |