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Annotation of 43BSDReno/lib/libc/gen/sleep.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: .\"    @(#)sleep.3     6.2 (Berkeley) 5/12/86
        !             6: .\"
        !             7: .TH SLEEP 3  "May 12, 1986"
        !             8: .UC 4
        !             9: .SH NAME
        !            10: sleep \- suspend execution for interval
        !            11: .SH SYNOPSIS
        !            12: .nf
        !            13: .B sleep(seconds)
        !            14: .B unsigned seconds;
        !            15: .fi
        !            16: .SH DESCRIPTION
        !            17: The current process is suspended from execution for the number
        !            18: of seconds specified by the argument.
        !            19: The actual suspension time may be up to 1 second less than
        !            20: that requested, because scheduled wakeups occur at fixed 1-second intervals,
        !            21: and an arbitrary amount longer because of other activity
        !            22: in the system.
        !            23: .PP
        !            24: The routine is implemented by setting an interval timer
        !            25: and pausing until it occurs.
        !            26: The previous state of this timer is saved and restored.
        !            27: If the sleep time exceeds the time to the expiration of the
        !            28: previous timer,
        !            29: the process sleeps only until the signal would have occurred, and the
        !            30: signal is sent 1 second later.
        !            31: .SH "SEE ALSO"
        !            32: setitimer(2), sigpause(2), usleep(3)

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