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Annotation of 43BSDReno/lib/libc/gen/ualarm.3, revision 1.1

1.1     ! root        1: .\" Copyright (c) 1980 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: .\"    @(#)@(#)ualarm.3        6.4 (Berkeley) 5/13/86
        !             6: .\"
        !             7: .TH UALARM 3  "May 13, 1986"
        !             8: .UC 6
        !             9: .SH NAME
        !            10: ualarm \- schedule signal after specified time
        !            11: .SH SYNOPSIS
        !            12: .nf
        !            13: .B unsigned ualarm(value, interval)
        !            14: .B unsigned value;
        !            15: .B unsigned interval;
        !            16: .fi
        !            17: .SH DESCRIPTION
        !            18: .ft B
        !            19: This is a simplified interface to setitimer(2).
        !            20: .ft R
        !            21: .PP
        !            22: .I Ualarm
        !            23: causes signal SIGALRM, see
        !            24: .IR signal (3C),
        !            25: to be sent to the invoking process
        !            26: in a number of microseconds given by the
        !            27: .I value
        !            28: argument.
        !            29: Unless caught or ignored, the signal terminates the process.
        !            30: .PP
        !            31: If the
        !            32: .I interval
        !            33: argument is non-zero, the SIGALRM signal will be sent
        !            34: to the process every
        !            35: .I interval
        !            36: microseconds after the timer expires (e.g. after
        !            37: .I value
        !            38: microseconds have passed).
        !            39: .PP
        !            40: Because of scheduling delays,
        !            41: resumption of execution of when the signal is
        !            42: caught may be delayed an arbitrary amount.
        !            43: The longest specifiable delay time (on the vax) is 2147483647 microseconds.
        !            44: .PP
        !            45: The return value is the amount of time previously remaining in the alarm clock.
        !            46: .SH "SEE ALSO"
        !            47: getitimer(2), setitimer(2), sigpause(2), sigvec(2), signal(3C), sleep(3),
        !            48: alarm(3), usleep(3)

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