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Annotation of 42BSD/lib/libc/gen/alarm.c, revision 1.1.1.1

1.1       root        1: /*     alarm.c 4.1     83/06/10        */
                      2: 
                      3: /*
                      4:  * Backwards compatible alarm.
                      5:  */
                      6: #include <sys/time.h>
                      7: 
                      8: alarm(secs)
                      9:        int secs;
                     10: {
                     11:        struct itimerval it, oitv;
                     12:        register struct itimerval *itp = &it;
                     13: 
                     14:        timerclear(&itp->it_interval);
                     15:        itp->it_value.tv_sec = secs;
                     16:        itp->it_value.tv_usec = 0;
                     17:        if (setitimer(ITIMER_REAL, itp, &oitv) < 0)
                     18:                return (-1);
                     19:        return (oitv.it_value.tv_sec);
                     20: }

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