ref: e0bfd148e29346f9fb824ea0c6ac86b5870836ce dir: /sys/src/ape/lib/ap/gen/clock.c/
#include <time.h> #include <sys/times.h> clock_t clock(void) { struct tms t; if(times(&t) == (clock_t)-1) return (clock_t)-1; return t.tms_utime+t.tms_stime; }