# 2.11BSD#431 - /usr/man/cat3/alarm.0

    ALARM(3C)	    UNIX Programmer's Manual		ALARM(3C)

    NAME
         alarm - schedule signal after specified time

    SYNOPSIS
         alarm(seconds)
         unsigned seconds;

    DESCRIPTION
         This interface is made obsolete by setitimer(2).

         Alarm causes signal SIGALRM, see sigvec(2), to be sent to
         the invoking process in a number of seconds given by the
         argument.	Unless caught or ignored, the signal terminates
         the process.

         Alarm requests are not stacked; successive calls reset the
         alarm clock.  If the argument is 0, any alarm request is
         canceled.	Because of scheduling delays, resumption of exe-
         cution of when the signal is caught may be delayed an arbi-
         trary amount.  The longest specifiable delay time is
         2147483647 seconds.

         The return value is the amount of time previously remaining
         in the alarm clock.

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

    Printed 11/26/99	  May 27, 1986				1

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