1 /* $OpenBSD: eventvar.h,v 1.2 2000/11/16 20:31:30 mickey Exp $ */
2
3 /*-
4 * Copyright (c) 1999,2000 Jonathan Lemon <jlemon@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD: src/sys/sys/eventvar.h,v 1.3 2000/05/26 02:06:54 jake Exp $
29 */
30
31 #ifndef _SYS_EVENTVAR_H_
32 #define _SYS_EVENTVAR_H_
33
34 #define KQ_NEVENTS 8 /* minimize copy{in,out} calls */
35 #define KQEXTENT 256 /* linear growth by this amount */
36
37 struct kqueue {
38 TAILQ_HEAD(kqlist, knote) kq_head; /* list of pending event */
39 int kq_count; /* number of pending events */
40 struct selinfo kq_sel;
41 struct filedesc *kq_fdp;
42 int kq_state;
43 #define KQ_SEL 0x01
44 #define KQ_SLEEP 0x02
45 struct kevent kq_kev[KQ_NEVENTS];
46 };
47
48 #endif /* !_SYS_EVENTVAR_H_ */