nsz Git - musl/blob - src/signal/setitimer.c

   1 #include <sys/time.h>
   2 #include "syscall.h"
   3
   4 int setitimer(int which, const struct itimerval *new, struct itimerval *old)
   5 {
   6         int ret;
   7         long knew[4] = {
   8                 new->it_interval.tv_sec, new->it_interval.tv_usec,
   9                 new->it_value.tv_sec, new->it_value.tv_usec
  10         }, kold[4];
  11
  12         if (!(ret = syscall3(__NR_setitimer, which, (long)&knew, old ? (long)&kold : 0)) && old)
  13                 *old = (struct itimerval){ { kold[0], kold[1] }, { kold[2], kold[3] } };
  14         return ret;
  15 }