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+.\"
+.\" Copyright (c) 2002 Julian Elischer
+.\" 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, 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.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd July 5, 2002
+.Dt THREAD_EXIT 9
+.Os
+.Sh NAME
+.Nm thread_exit
+.Nd abandon current thread context
+.Sh SYNOPSIS
+.In sys/param.h
+.In sys/proc.h
+.Ft void
+.Fn thread_exit "void"
+.Sh DESCRIPTION
+The
+.Fn thread_exit
+function implements the machine independent prelude to a thread
+shutdown.
+It will not return, and will result in a call to
+.Xr mi_switch 9
+to schedule some other thread.
+.Pp
+.Fn thread_exit
+arranges to free all the resources of the thread, specifically the kernel
+stack.
+.Pp
+To protect the
+.Xr runqueue 9 ,
+.Fn thread_exit
+must be called with the
+.Va sched_lock
+mutex held.
+.Sh SEE ALSO
+.Xr mi_switch 9 ,
+.Xr mutex 9 ,
+.Xr runqueue 9 ,
+.Xr sleep 9