83 lines
2.9 KiB
Groff
83 lines
2.9 KiB
Groff
.\" $NetBSD: cpu_exit.9,v 1.5 2003/02/04 22:38:18 perry Exp $
|
|
.\"
|
|
.\" Copyright (c) 2002 The NetBSD Foundation, Inc.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This code is derived from software contributed to The NetBSD Foundation
|
|
.\" by Gregory McGarry.
|
|
.\"
|
|
.\" 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, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the NetBSD
|
|
.\" Foundation, Inc. and its contributors.
|
|
.\" 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
.\" contributors may be used to endorse or promote products derived
|
|
.\" from this software without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
.\" ``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 FOUNDATION OR CONTRIBUTORS
|
|
.\" 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.
|
|
.\"
|
|
.Dd May 24, 2002
|
|
.Dt CPU_EXIT 9
|
|
.Os
|
|
.Sh NAME
|
|
.Nm cpu_exit
|
|
.Nd machine-dependent process exit
|
|
.Sh SYNOPSIS
|
|
.Fd #include \*[Lt]sys/systm.h\*[Gt]
|
|
.Ft void
|
|
.Fn cpu_exit "struct proc *p"
|
|
.Sh DESCRIPTION
|
|
.Fn cpu_exit
|
|
is machine-dependent code invoked by
|
|
.Fn exit1
|
|
as the last action during process exit to switch to a new context
|
|
(possibly the idle context).
|
|
.Fn cpu_exit
|
|
will clean up machine-dependent process state and invoke
|
|
.Fn exit2
|
|
to schedule the old process's u-area and stack to be released by the
|
|
reaper thread.
|
|
.Fn cpu_exit
|
|
will then invoke
|
|
.Fn cpu_switch
|
|
to wait for another process to wake up.
|
|
.Pp
|
|
Note that
|
|
.Fn cpu_exit
|
|
should be called at
|
|
.Xr splhigh 9 .
|
|
.Sh CODE REFERENCES
|
|
This section describes places within the
|
|
.Nx
|
|
source tree where actual code using
|
|
.Fn cpu_exit
|
|
be found.
|
|
All pathnames are relative to
|
|
.Pa /usr/src .
|
|
.Pp
|
|
.Fn exit1
|
|
and
|
|
.Fn exit2
|
|
can be found within the file
|
|
.Pa sys/kern/kern_exit.c .
|
|
.Sh SEE ALSO
|
|
.Xr cpu_switch 9
|