1/* 2 * Copyright (c) 2003 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 6 * The contents of this file constitute Original Code as defined in and 7 * are subject to the Apple Public Source License Version 1.1 (the 8 * "License"). You may not use this file except in compliance with the 9 * License. Please obtain a copy of the License at 10 * http://www.apple.com/publicsource and read it before using this file. 11 * 12 * This Original Code and all software distributed under the License are 13 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER 14 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 15 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the 17 * License for the specific language governing rights and limitations 18 * under the License. 19 * 20 * @APPLE_LICENSE_HEADER_END@ 21 */ 22/*- 23 * Copyright (c) 1999,2000 Jonathan Lemon <jlemon@FreeBSD.org> 24 * All rights reserved. 25 * 26 * Redistribution and use in source and binary forms, with or without 27 * modification, are permitted provided that the following conditions 28 * are met: 29 * 1. Redistributions of source code must retain the above copyright 30 * notice, this list of conditions and the following disclaimer. 31 * 2. Redistributions in binary form must reproduce the above copyright 32 * notice, this list of conditions and the following disclaimer in the 33 * documentation and/or other materials provided with the distribution. 34 * 35 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 36 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 37 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 38 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 39 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 40 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 41 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 42 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 43 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 44 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 45 * SUCH DAMAGE. 46 * 47 * $FreeBSD: src/sys/sys/eventvar.h,v 1.1.2.2 2000/07/18 21:49:12 jlemon Exp $ 48 */ 49 50#ifndef _SYS_EVENTVAR_H_ 51#define _SYS_EVENTVAR_H_ 52 53#include <sys/event.h> 54#include <sys/select.h> 55#include <kern/kern_types.h> 56 57#define KQ_NEVENTS 16 /* minimize copy{in,out} calls */ 58#define KQEXTENT 256 /* linear growth by this amount */ 59 60struct kqueue { 61 decl_lck_spin_data( ,kq_lock) /* kqueue lock */ 62 int kq_state; 63 int kq_count; /* number of queued events */ 64 struct kqtailq kq_head; /* list of queued events */ 65 struct kqtailq kq_inprocess; /* list of in-process events */ 66 struct selinfo kq_sel; /* parent select/kqueue info */ 67 struct filedesc *kq_fdp; 68 69#define KQ_SEL 0x01 70#define KQ_SLEEP 0x02 71#define KQ_PROCWAIT 0x04 72}; 73 74extern struct kqueue *kqueue_alloc(struct proc *); 75extern void kqueue_dealloc(struct kqueue *, struct proc *); 76 77typedef int (*kevent_callback_t)(struct kqueue *, struct kevent *, void *); 78typedef void (*kevent_continue_t)(struct kqueue *, void *, int); 79 80extern int kevent_register(struct kqueue *, struct kevent *, struct proc *); 81extern int kevent_scan(struct kqueue *, kevent_callback_t, kevent_continue_t, 82 void *, struct timeval *, struct proc *); 83 84#endif /* !_SYS_EVENTVAR_H_ */ 85