Section (2) alarm
alarm — set an alarm clock for delivery of a signal
||unsigned int seconds
alarm() arranges for a
SIGALRM signal to be delivered
to the calling process in
zero, any pending alarm is canceled.
In any event any previously set
alarm() is canceled.
alarm() returns the number
of seconds remaining until any previously scheduled alarm was
due to be delivered, or zero if there was no previously
alarm() and setitimer(2) share the same
timer; calls to one will interfere with use of the other.
Scheduling delays can, as ever, cause the execution of the process to be delayed by an arbitrary amount of time.
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This manpage is Copyright (C) 1992 Drew Eckhardt;
and Copyright (C) 1993 Michael Haardt, Ian Jackson.
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Modified Wed Jul 21 19:42:57 1993 by Rik Faith <faithcs.unc.edu>
Modified Sun Jul 21 21:25:26 1996 by Andries Brouwer <aebcwi.nl>
Modified Wed Nov 6 03:46:05 1996 by Eric S. Raymond <esrthyrsus.com>