1*16215Sralph /* alarm.c 4.2 84/03/22 */ 212973Ssam 312973Ssam /* 412973Ssam * Backwards compatible alarm. 512973Ssam */ 612973Ssam #include <sys/time.h> 712973Ssam 812973Ssam alarm(secs) 912973Ssam int secs; 1012973Ssam { 1112973Ssam struct itimerval it, oitv; 1212973Ssam register struct itimerval *itp = ⁢ 1312973Ssam 1412973Ssam timerclear(&itp->it_interval); 1512973Ssam itp->it_value.tv_sec = secs; 1612973Ssam itp->it_value.tv_usec = 0; 1712973Ssam if (setitimer(ITIMER_REAL, itp, &oitv) < 0) 1812973Ssam return (-1); 19*16215Sralph if (oitv.it_value.tv_usec) 20*16215Sralph oitv.it_value.tv_sec++; 2112973Ssam return (oitv.it_value.tv_sec); 2212973Ssam } 23