1ALARM(3C)                                                            ALARM(3C)
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NAME

6       alarm - schedule signal after specified time
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SYNOPSIS

9       alarm(seconds)
10       unsigned seconds;
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DESCRIPTION

13       This interface is made obsolete by setitimer(2).
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15       Alarm  causes signal SIGALRM, see sigvec(2), to be sent to the invoking
16       process in a number of seconds given by the argument.  Unless caught or
17       ignored, the signal terminates the process.
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19       Alarm requests are not stacked; successive calls reset the alarm clock.
20       If the argument is 0, any alarm request is canceled.  Because of sched‐
21       uling  delays, resumption of execution of when the signal is caught may
22       be delayed an arbitrary amount.  The longest specifiable delay time  is
23       2147483647 seconds.
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25       The  return  value  is  the  amount of time previously remaining in the
26       alarm clock.
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SEE ALSO

29       sigpause(2), sigvec(2), signal(3C), sleep(3), ualarm(3), usleep(3)
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334th Berkeley Distribution        May 27, 1986                        ALARM(3C)