ref: 297c3c7dfa958231abe140ee00d38b0e684ad48c
dir: /src/libc/arch/posix/clock.c/
#include <time.h> #include <sys.h> #include "time.h" #define TOCLOCK(r) (r.tv_sec * CLOCKS_PER_SEC +\ r.tv_usec / (1000000 / CLOCKS_PER_SEC)) struct rusage { struct timeval ru_utime; struct timeval ru_stime; long int ru_maxrss; long int ru_ixrss; long int ru_idrss; long int ru_isrss; long int ru_minflt; long int ru_majflt; long int ru_nswap; long int ru_inblock; long int ru_oublock; long int ru_msgsnd; long int ru_msgrcv; long int ru_nsignals; long int ru_nvcsw; long int ru_nivcsw; }; extern int _getrusage(int, struct rusage*); clock_t clock(void) { struct rusage ru; if (_getrusage(RUSAGE_SELF, &ru)) return -1; return TOCLOCK(ru.ru_utime) + TOCLOCK(ru.ru_stime); }