Change sendfile() to use the new m_ext callback scheme for cleaning up after
[dragonfly.git] / sys / sys / eventvar.h
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1/*-
2 * Copyright (c) 1999,2000 Jonathan Lemon <jlemon@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: src/sys/sys/eventvar.h,v 1.1.2.2 2000/07/18 21:49:12 jlemon Exp $
1de703da 27 * $DragonFly: src/sys/sys/eventvar.h,v 1.2 2003/06/17 04:28:58 dillon Exp $
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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 KQEXTENT 256 /* linear growth by this amount */
35
36struct kqueue {
37 TAILQ_HEAD(kqlist, knote) kq_head; /* list of pending event */
38 int kq_count; /* number of pending events */
39 struct selinfo kq_sel;
40 struct filedesc *kq_fdp;
41 int kq_state;
42#define KQ_SEL 0x01
43#define KQ_SLEEP 0x02
44 struct kevent kq_kev[KQ_NEVENTS];
45};
46
47#endif /* !_SYS_EVENTVAR_H_ */