ALARM(3) BSD Library Functions Manual ALARM(3)

NAME
     aallaarrmm - set signal timer alarm

LLIIBBRRAARRYY
     Standard C Library (libc, -lc)

SYNOPSIS
     ##iinncclluuddee <>

     unsigned int
     aallaarrmm(unsigned int seconds);

DESCRIPTION
     TThhiiss iinntteerrffaaccee iiss mmaaddee oobbssoolleettee bbyy setitimer(22)..

     The aallaarrmm() function sets a timer to deliver the signal SIGALRM to the
     calling process after the specified number of seconds.  If an alarm has
     already been set with aallaarrmm() but has not been delivered, another call to
     aallaarrmm() will supersede the prior call.  The request aallaarrmm(0) voids the
     current alarm and the signal SIGALRM will not be delivered.

     Due to setitimer(2) restriction the maximum number of seconds allowed is
     100000000.

RETURN VALUES
     The return value of aallaarrmm() is the amount of time left on the timer from
     a previous call to aallaarrmm().  If no alarm is currently set, the return
     value is 0.

SEE ALSO
     setitimer(2), sigaction(2), sigpause(2), sigvec(2), signal(3), sleep(3),
     ualarm(3), usleep(3)

HISTORY     An aallaarrmm() function appeared in Version 7 AT&T UNIX.

BSD                             April 19, 1994                             BSD