diff options
Diffstat (limited to 'src/time/clock.c')
| -rw-r--r-- | src/time/clock.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/src/time/clock.c b/src/time/clock.c index 78403af3..c348e398 100644 --- a/src/time/clock.c +++ b/src/time/clock.c @@ -1,15 +1,18 @@ #include <time.h> -#include <sys/times.h> -#include "syscall.h" +#include <limits.h> int __clock_gettime(clockid_t, struct timespec *); clock_t clock() { struct timespec ts; - struct tms tms; - if (!__clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts)) - return ts.tv_sec*1000000 + ts.tv_nsec/1000; - __syscall(SYS_times, &tms); - return (tms.tms_utime + tms.tms_stime)*10000; + + if (__clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts)) + return -1; + + if (ts.tv_sec > LONG_MAX/1000000 + || ts.tv_nsec/1000 > LONG_MAX-1000000*ts.tv_sec) + return -1; + + return ts.tv_sec*1000000 + ts.tv_nsec/1000; } |