1.\" $NetBSD: _lwp_makecontext.3,v 1.3 2003/04/16 13:34:35 wiz 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.\" 3. All advertising materials mentioning features or use of this software 18.\" must display the following acknowledgement: 19.\" This product includes software developed by the NetBSD 20.\" Foundation, Inc. and its contributors. 21.\" 4. Neither the name of The NetBSD Foundation nor the names of its 22.\" contributors may be used to endorse or promote products derived 23.\" from this software without specific prior written permission. 24.\" 25.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35.\" POSSIBILITY OF SUCH DAMAGE. 36.\" 37.Dd January 16, 2003 38.Dt _LWP_MAKECONTEXT 3 39.Os 40.Sh NAME 41.Nm _lwp_makecontext 42.Nd create a new initial light-weight process execution context 43.Sh LIBRARY 44.Lb libc 45.Sh SYNOPSIS 46.In lwp.h 47.Ft void 48.Fn _lwp_makecontext "ucontext_t *context" "void (*start_routine)(void *)" \ 49 "void *arg" "void *private" "caddr_t stack_base" "size_t stack_size" 50.Sh DESCRIPTION 51.Fn _lwp_makecontext 52initializes the context structure pointed to by 53.Fa context 54in a manner suitable for using with 55.Xr _lwp_create 2 . 56The LWP will begin execution at the function specified by 57.Fa start_routine 58which will be passed a single argument 59.Fa arg . 60The LWP private data pointer will be set to 61.Fa private . 62The stack region for the new LWP is specified by the 63.Fa stack_base 64and 65.Fa stack_size 66arguments. 67.Pp 68The signal mask in the context structure is not initialized by 69.Fn _lwp_makecontext . 70.Sh SEE ALSO 71.Xr _lwp_create 2 , 72.Xr _lwp_getprivate 2 73.Sh HISTORY 74The 75.Fn _lwp_create 76system call first appeared in 77.Nx 2.0 . 78.Sh BUGS 79The LWP private data pointer is not initialized by the current 80implementation of 81.Fn _lwp_makecontext . 82