minix/lib/libc/gen/_lwp_makecontext.3

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.\" $NetBSD: _lwp_makecontext.3,v 1.4 2008/04/30 13:10:50 martin Exp $
.\"
.\" Copyright (c) 2003 The NetBSD Foundation, Inc.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Jason R. Thorpe of Wasabi Systems, Inc.
.\"
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.\" modification, are permitted provided that the following conditions
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.Dd January 16, 2003
.Dt _LWP_MAKECONTEXT 3
.Os
.Sh NAME
.Nm _lwp_makecontext
.Nd create a new initial light-weight process execution context
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In lwp.h
.Ft void
.Fn _lwp_makecontext "ucontext_t *context" "void (*start_routine)(void *)" \
"void *arg" "void *private" "caddr_t stack_base" "size_t stack_size"
.Sh DESCRIPTION
.Fn _lwp_makecontext
initializes the context structure pointed to by
.Fa context
in a manner suitable for using with
.Xr _lwp_create 2 .
The LWP will begin execution at the function specified by
.Fa start_routine
which will be passed a single argument
.Fa arg .
The LWP private data pointer will be set to
.Fa private .
The stack region for the new LWP is specified by the
.Fa stack_base
and
.Fa stack_size
arguments.
.Pp
The signal mask in the context structure is not initialized by
.Fn _lwp_makecontext .
.Sh SEE ALSO
.Xr _lwp_create 2 ,
.Xr _lwp_getprivate 2
.Sh HISTORY
The
.Fn _lwp_create
system call first appeared in
.Nx 2.0 .
.Sh BUGS
The LWP private data pointer is not initialized by the current
implementation of
.Fn _lwp_makecontext .