[src/uebayasi-xip]: src/share/man/man9 No trailing whitespace

[joerg <joerg%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/6613fd02d225
branches:  uebayasi-xip
changeset: 751642:6613fd02d225
user:      joerg <joerg%NetBSD.org@localhost>
date:      Mon Apr 05 19:36:30 2010 +0000

description:
No trailing whitespace

diffstat:

 share/man/man9/select.9 |  131 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 131 insertions(+), 0 deletions(-)

diffs (135 lines):

diff -r 7391b06f1eaf -r 6613fd02d225 share/man/man9/select.9
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
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+.\"     $NetBSD: select.9,v 1.4.2.2 2010/04/05 19:36:30 joerg Exp $
+.\"
+.\" Copyright (C) 2002 Chad David <davidc%acns.ab.ca@localhost>. All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice(s), this list of conditions and the following disclaimer as
+.\"    the first lines of this file unmodified other than the possible
+.\"    addition of one or more copyright notices.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice(s), this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
+.\" EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+.\" DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
+.\" DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+.\" CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+.\" DAMAGE.
+.\"
+.\" $FreeBSD: src/share/man/man9/selrecord.9,v 1.2 2002/05/30 13:29:17 ru Exp $
+.\"
+.\" FreeBSD: .Dd March 20, 2002
+.Dd May 13, 2008
+.Dt SELECT 9
+.Os
+.Sh NAME
+.Nm seldestroy ,
+.Nm selinit ,
+.Nm selrecord ,
+.Nm selnotify
+.Nd select and poll subsystem
+.Sh SYNOPSIS
+.In sys/param.h
+.In sys/select.h
+.Ft void
+.Fn seldestroy "struct selinfo *sip"
+.Ft void
+.Fn selinit "struct selinfo *sip"
+.Ft void
+.Fn selrecord "struct lwp *selector" "struct selinfo *sip"
+.Ft void
+.Fn selnotify "struct selinfo *sip" "int events" "long knhint"
+.Sh DESCRIPTION
+.Fn selinit
+and
+.Fn seldestroy
+functions must be used to initialize and destroy the
+.Va struct selinfo .
+The
+.Fn seldestroy
+function may block.
+.Pp
+.Fn selrecord
+and
+.Fn selnotify
+are used by device drivers to coordinate
+with the kernel implementation of
+.Xr select 2
+and
+.Xr poll 2 .
+Each object that can be polled contains a
+.Dv selinfo
+record.
+Device drivers provide locking for the
+.Dv selinfo
+record.
+.Pp
+.Fn selrecord
+records that the calling thread is interested in events related to a given
+object.
+.Fn selrecord
+should only be called when the poll routine determines that the object
+is not ready for I/O: there are no events of interest pending.
+The check for pending I/O and call to
+.Fn selrecord
+must be atomic.
+Atomicity can be provided by holding the object's lock across the test
+and call to
+.Fn selrecord .
+For non-MPSAFE drivers, the global
+.Dv kernel_lock
+is enough to provide atomicity.
+.Pp
+.Fn selnotify
+is called by the underlying object handling code in order to notify any waiting
+threads that an event of interest has occurred.
+The same lock held across the poll method and call to
+.Fn selrecord
+must be held across the call to
+.Fn selnotify .
+The lock prevents an event of interest being signalled while a thread is
+in the process of recording its interest.
+.Pp
+The
+.Fa events
+indicates which event happen.
+Zero may be used if unknown.
+.Pp
+.Fn selnotify
+also calls
+.Fn KNOTE
+passing
+.Va knhint
+as an argument.
+.Sh CODE REFERENCES
+This section describes places within the
+.Nx
+source tree where actual code implementing select and poll
+subsystem can be found.
+All pathnames are relative to
+.Pa /usr/src .
+.Pp
+The core of the select and poll subsystem implementation is in
+.Pa sys/kern/sys_select.c .
+Data structures and function prototypes are located in
+.Pa sys/sys/select.h ,
+.Pa sys/sys/poll.h
+and
+.Pa sys/sys/selinfo.h .
+.Sh SEE ALSO
+.Xr poll 2 ,
+.Xr select 2 ,
+.Xr knote 9