75 lines
2.7 KiB
Groff
75 lines
2.7 KiB
Groff
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.\" $NetBSD: _lwp_makecontext.3,v 1.4 2008/04/30 13:10:50 martin Exp $
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.\"
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.\" Copyright (c) 2003 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Jason R. Thorpe of Wasabi Systems, Inc.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd January 16, 2003
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.Dt _LWP_MAKECONTEXT 3
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.Os
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.Sh NAME
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.Nm _lwp_makecontext
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.Nd create a new initial light-weight process execution context
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In lwp.h
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.Ft void
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.Fn _lwp_makecontext "ucontext_t *context" "void (*start_routine)(void *)" \
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"void *arg" "void *private" "caddr_t stack_base" "size_t stack_size"
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.Sh DESCRIPTION
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.Fn _lwp_makecontext
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initializes the context structure pointed to by
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.Fa context
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in a manner suitable for using with
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.Xr _lwp_create 2 .
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The LWP will begin execution at the function specified by
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.Fa start_routine
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which will be passed a single argument
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.Fa arg .
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The LWP private data pointer will be set to
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.Fa private .
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The stack region for the new LWP is specified by the
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.Fa stack_base
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and
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.Fa stack_size
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arguments.
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.Pp
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The signal mask in the context structure is not initialized by
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.Fn _lwp_makecontext .
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.Sh SEE ALSO
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.Xr _lwp_create 2 ,
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.Xr _lwp_getprivate 2
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.Sh HISTORY
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The
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.Fn _lwp_create
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system call first appeared in
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.Nx 2.0 .
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.Sh BUGS
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The LWP private data pointer is not initialized by the current
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implementation of
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.Fn _lwp_makecontext .
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