1.\" $NetBSD: _lwp_makecontext.3,v 1.4 2008/04/30 13:10:50 martin Exp $ 2.\" 3.\" Copyright (c) 2003 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Jason R. Thorpe of Wasabi Systems, Inc. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28.\" POSSIBILITY OF SUCH DAMAGE. 29.\" 30.Dd January 16, 2003 31.Dt _LWP_MAKECONTEXT 3 32.Os 33.Sh NAME 34.Nm _lwp_makecontext 35.Nd create a new initial light-weight process execution context 36.Sh LIBRARY 37.Lb libc 38.Sh SYNOPSIS 39.In lwp.h 40.Ft void 41.Fn _lwp_makecontext "ucontext_t *context" "void (*start_routine)(void *)" \ 42 "void *arg" "void *private" "caddr_t stack_base" "size_t stack_size" 43.Sh DESCRIPTION 44.Fn _lwp_makecontext 45initializes the context structure pointed to by 46.Fa context 47in a manner suitable for using with 48.Xr _lwp_create 2 . 49The LWP will begin execution at the function specified by 50.Fa start_routine 51which will be passed a single argument 52.Fa arg . 53The LWP private data pointer will be set to 54.Fa private . 55The stack region for the new LWP is specified by the 56.Fa stack_base 57and 58.Fa stack_size 59arguments. 60.Pp 61The signal mask in the context structure is not initialized by 62.Fn _lwp_makecontext . 63.Sh SEE ALSO 64.Xr _lwp_create 2 , 65.Xr _lwp_getprivate 2 66.Sh HISTORY 67The 68.Fn _lwp_create 69system call first appeared in 70.Nx 2.0 . 71.Sh BUGS 72The LWP private data pointer is not initialized by the current 73implementation of 74.Fn _lwp_makecontext . 75