2 * Copyright (c) 1999,2000 Jonathan Lemon <jlemon@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
29 #ifndef _SYS_EVENTVAR_H_
30 #define _SYS_EVENTVAR_H_
33 #error "no user-servicable parts inside"
36 #include <sys/_task.h>
38 #define KQ_NEVENTS 8 /* minimize copy{in,out} calls */
39 #define KQEXTENT 256 /* linear growth by this amount */
44 SLIST_ENTRY(kqueue) kq_list;
45 TAILQ_HEAD(, knote) kq_head; /* list of pending event */
46 int kq_count; /* number of pending events */
47 struct selinfo kq_sel;
48 struct sigio *kq_sigio;
49 struct filedesc *kq_fdp;
53 #define KQ_FLUXWAIT 0x04 /* waiting for a in flux kn */
55 #define KQ_CLOSING 0x10
56 #define KQ_TASKSCHED 0x20 /* task scheduled */
57 #define KQ_TASKDRAIN 0x40 /* waiting for task to drain */
58 int kq_knlistsize; /* size of knlist */
59 struct klist *kq_knlist; /* list of knotes */
60 u_long kq_knhashmask; /* size of knhash */
61 struct klist *kq_knhash; /* hash table for knotes */
65 #endif /* !_SYS_EVENTVAR_H_ */