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Annotation of 43BSDTahoe/man/man3f/alarm.3, revision 1.1.1.1

1.1       root        1: .\" Copyright (c) 1983 Regents of the University of California.
                      2: .\" All rights reserved.  The Berkeley software License Agreement
                      3: .\" specifies the terms and conditions for redistribution.
                      4: .\"
                      5: .\"    @(#)alarm.3f    6.1 (Berkeley) 5/15/85
                      6: .\"
                      7: .TH ALARM 3F "May 15, 1985"
                      8: .UC 5
                      9: .SH NAME
                     10: alarm \- execute a subroutine after a specified time
                     11: .SH SYNOPSIS
                     12: .B integer function alarm (time, proc)
                     13: .br
                     14: .B integer time
                     15: .br
                     16: .B external proc
                     17: .SH DESCRIPTION
                     18: This routine arranges for subroutine
                     19: .I proc
                     20: to be called after
                     21: .I time
                     22: seconds. If
                     23: .I time
                     24: is ``0'', the alarm is turned off and no routine will be called.
                     25: The returned value will be the time remaining on the last alarm.
                     26: .SH FILES
                     27: .ie \nM /usr/ucb/lib/libU77.a
                     28: .el /usr/lib/libU77.a
                     29: .SH "SEE ALSO"
                     30: alarm(3C), sleep(3F), signal(3F)
                     31: .SH BUGS
                     32: .I Alarm
                     33: and
                     34: .I sleep
                     35: interact. If
                     36: .I sleep
                     37: is called after
                     38: .IR alarm ,
                     39: the
                     40: .I alarm
                     41: process will never be called. SIGALRM will occur at the lesser of the
                     42: remaining
                     43: .I alarm
                     44: time or the
                     45: .I sleep
                     46: time.

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