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Command: alarm | Section: 3 | Source: 4.4BSD | File: alarm.3
ALARM(3F) ALARM(3F)
NAME
alarm - execute a subroutine after a specified time
SYNOPSIS
integer function alarm (time, proc)
integer time
external proc
DESCRIPTION
This routine arranges for subroutine proc to be called after time sec-
onds. 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.
4.2 Berkeley Distribution April 30, 1991 ALARM(3F)