


      ALARM(3F)                   (bsd 4.2)                   ALARM(3F)



      NAME
           alarm - execute a subroutine after a specified time

      SYNTAX
           integer function alarm (time, proc)
           integer time
           external proc

      DESCRIPTION
           This routine arranges for subroutine proc to be called after
           time seconds. If time is ``0'', the alarm is turned off and
           no routine will be called.  The returned value will be the
           time remaining on the last alarm.

      FILES
           /usr/lib/libU77.a

      SEE ALSO
           alarm(3C), sleep(3F), signal(3F)

      BUGS
           Alarm and sleep interact. If sleep is called after alarm,
           the alarm process will never be called. SIGALRM will occur
           at the lesser of the remaining alarm time or the sleep time.































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