1 /* $NetBSD: eventvar.h,v 1.3 2002/10/23 09:14:56 jdolecek Exp $ */ 2 /*- 3 * Copyright (c) 1999,2000 Jonathan Lemon <jlemon@FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD: src/sys/sys/eventvar.h,v 1.4 2000/07/18 19:31:48 jlemon Exp $ 28 */ 29 30 #ifndef _SYS_EVENTVAR_H_ 31 #define _SYS_EVENTVAR_H_ 32 33 #define KQ_NEVENTS 8 /* minimize copy{in,out} calls */ 34 #define KQ_EXTENT 256 /* linear growth by this amount */ 35 #define KFILTER_MAXNAME 256 /* maximum size of a filter name */ 36 #define KFILTER_EXTENT 8 /* grow user_kfilters by this amt */ 37 38 struct kqueue { 39 TAILQ_HEAD(kqlist, knote) kq_head; /* list of pending event */ 40 int kq_count; /* number of pending events */ 41 struct selinfo kq_sel; 42 struct filedesc *kq_fdp; 43 int kq_state; 44 #define KQ_SLEEP 0x01 45 struct kevent kq_kev[KQ_NEVENTS]; 46 }; 47 48 #endif /* !_SYS_EVENTVAR_H_ */ 49