1.\" $NetBSD: _lwp_detach.2,v 1.4 2008/04/30 13:10:51 martin Exp $ 2.\" 3.\" Copyright (c) 2003, 2007 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, and by Andrew Doran. 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 20, 2007 31.Dt _LWP_DETACH 2 32.Os 33.Sh NAME 34.Nm _lwp_detach 35.Nd detach a light-weight process 36.Sh LIBRARY 37.Lb libc 38.Sh SYNOPSIS 39.In lwp.h 40.Ft int 41.Fn _lwp_detach "lwpid_t lwp" 42.Sh DESCRIPTION 43.Fn _lwp_detach 44causes a light-weight process to become detached, having the same 45effect as if the LWP was created with the 46.Dv LWP_DETACHED 47flag. 48.Pp 49The resources associated with a detached LWP will be automatically 50reclaimed by the system when the LWP exits. 51Conversely, an attached LWP's resources will not be reclaimed until 52its status is reported to another LWP via 53.Xr _lwp_wait 2 . 54.Sh RETURN VALUES 55A 0 value indicates that the call succeeded. 56A \-1 return value indicates an error occurred and 57.Va errno 58is set to indicate the reason. 59.Sh ERRORS 60.Bl -tag -width [EINVAL] 61.It Bq Er EINVAL 62The LWP is already detached. 63.It Bq Er ESRCH 64No LWP can be found in the current process corresponding to that 65specified by 66.Fa lwp . 67.El 68.Sh SEE ALSO 69.Xr _lwp_create 2 , 70.Xr _lwp_wait 2 71.Sh HISTORY 72The 73.Fn _lwp_detach 74system call first appeared in 75.Nx 5.0 . 76