1*2fe8fb19SBen Gras.\" $NetBSD: _lwp_makecontext.3,v 1.4 2008/04/30 13:10:50 martin Exp $ 2*2fe8fb19SBen Gras.\" 3*2fe8fb19SBen Gras.\" Copyright (c) 2003 The NetBSD Foundation, Inc. 4*2fe8fb19SBen Gras.\" All rights reserved. 5*2fe8fb19SBen Gras.\" 6*2fe8fb19SBen Gras.\" This code is derived from software contributed to The NetBSD Foundation 7*2fe8fb19SBen Gras.\" by Jason R. Thorpe of Wasabi Systems, Inc. 8*2fe8fb19SBen Gras.\" 9*2fe8fb19SBen Gras.\" Redistribution and use in source and binary forms, with or without 10*2fe8fb19SBen Gras.\" modification, are permitted provided that the following conditions 11*2fe8fb19SBen Gras.\" are met: 12*2fe8fb19SBen Gras.\" 1. Redistributions of source code must retain the above copyright 13*2fe8fb19SBen Gras.\" notice, this list of conditions and the following disclaimer. 14*2fe8fb19SBen Gras.\" 2. Redistributions in binary form must reproduce the above copyright 15*2fe8fb19SBen Gras.\" notice, this list of conditions and the following disclaimer in the 16*2fe8fb19SBen Gras.\" documentation and/or other materials provided with the distribution. 17*2fe8fb19SBen Gras.\" 18*2fe8fb19SBen Gras.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19*2fe8fb19SBen Gras.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20*2fe8fb19SBen Gras.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21*2fe8fb19SBen Gras.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22*2fe8fb19SBen Gras.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23*2fe8fb19SBen Gras.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24*2fe8fb19SBen Gras.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25*2fe8fb19SBen Gras.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26*2fe8fb19SBen Gras.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27*2fe8fb19SBen Gras.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28*2fe8fb19SBen Gras.\" POSSIBILITY OF SUCH DAMAGE. 29*2fe8fb19SBen Gras.\" 30*2fe8fb19SBen Gras.Dd January 16, 2003 31*2fe8fb19SBen Gras.Dt _LWP_MAKECONTEXT 3 32*2fe8fb19SBen Gras.Os 33*2fe8fb19SBen Gras.Sh NAME 34*2fe8fb19SBen Gras.Nm _lwp_makecontext 35*2fe8fb19SBen Gras.Nd create a new initial light-weight process execution context 36*2fe8fb19SBen Gras.Sh LIBRARY 37*2fe8fb19SBen Gras.Lb libc 38*2fe8fb19SBen Gras.Sh SYNOPSIS 39*2fe8fb19SBen Gras.In lwp.h 40*2fe8fb19SBen Gras.Ft void 41*2fe8fb19SBen Gras.Fn _lwp_makecontext "ucontext_t *context" "void (*start_routine)(void *)" \ 42*2fe8fb19SBen Gras "void *arg" "void *private" "caddr_t stack_base" "size_t stack_size" 43*2fe8fb19SBen Gras.Sh DESCRIPTION 44*2fe8fb19SBen Gras.Fn _lwp_makecontext 45*2fe8fb19SBen Grasinitializes the context structure pointed to by 46*2fe8fb19SBen Gras.Fa context 47*2fe8fb19SBen Grasin a manner suitable for using with 48*2fe8fb19SBen Gras.Xr _lwp_create 2 . 49*2fe8fb19SBen GrasThe LWP will begin execution at the function specified by 50*2fe8fb19SBen Gras.Fa start_routine 51*2fe8fb19SBen Graswhich will be passed a single argument 52*2fe8fb19SBen Gras.Fa arg . 53*2fe8fb19SBen GrasThe LWP private data pointer will be set to 54*2fe8fb19SBen Gras.Fa private . 55*2fe8fb19SBen GrasThe stack region for the new LWP is specified by the 56*2fe8fb19SBen Gras.Fa stack_base 57*2fe8fb19SBen Grasand 58*2fe8fb19SBen Gras.Fa stack_size 59*2fe8fb19SBen Grasarguments. 60*2fe8fb19SBen Gras.Pp 61*2fe8fb19SBen GrasThe signal mask in the context structure is not initialized by 62*2fe8fb19SBen Gras.Fn _lwp_makecontext . 63*2fe8fb19SBen Gras.Sh SEE ALSO 64*2fe8fb19SBen Gras.Xr _lwp_create 2 , 65*2fe8fb19SBen Gras.Xr _lwp_getprivate 2 66*2fe8fb19SBen Gras.Sh HISTORY 67*2fe8fb19SBen GrasThe 68*2fe8fb19SBen Gras.Fn _lwp_create 69*2fe8fb19SBen Grassystem call first appeared in 70*2fe8fb19SBen Gras.Nx 2.0 . 71*2fe8fb19SBen Gras.Sh BUGS 72*2fe8fb19SBen GrasThe LWP private data pointer is not initialized by the current 73*2fe8fb19SBen Grasimplementation of 74*2fe8fb19SBen Gras.Fn _lwp_makecontext . 75