| | 1 | /* |
| | 2 | * Copyright (c) 2003 Apple Computer, Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * This file contains Original Code and/or Modifications of Original Code |
| | 7 | * as defined in and that are subject to the Apple Public Source License |
| | 8 | * Version 2.0 (the 'License'). You may not use this file except in |
| | 9 | * compliance with the License. The rights granted to you under the License |
| | 10 | * may not be used to create, or enable the creation or redistribution of, |
| | 11 | * unlawful or unlicensed copies of an Apple operating system, or to |
| | 12 | * circumvent, violate, or enable the circumvention or violation of, any |
| | 13 | * terms of an Apple operating system software license agreement. |
| | 14 | * |
| | 15 | * Please obtain a copy of the License at |
| | 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
| | 17 | * |
| | 18 | * The Original Code and all software distributed under the License are |
| | 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| | 23 | * Please see the License for the specific language governing rights and |
| | 24 | * limitations under the License. |
| | 25 | * |
| | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| | 27 | */ |
| | 28 | /*- |
| | 29 | * Copyright (c) 1999,2000 Jonathan Lemon <jlemon@FreeBSD.org> |
| | 30 | * All rights reserved. |
| | 31 | * |
| | 32 | * Redistribution and use in source and binary forms, with or without |
| | 33 | * modification, are permitted provided that the following conditions |
| | 34 | * are met: |
| | 35 | * 1. Redistributions of source code must retain the above copyright |
| | 36 | * notice, this list of conditions and the following disclaimer. |
| | 37 | * 2. Redistributions in binary form must reproduce the above copyright |
| | 38 | * notice, this list of conditions and the following disclaimer in the |
| | 39 | * documentation and/or other materials provided with the distribution. |
| | 40 | * |
| | 41 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| | 42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| | 43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| | 44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| | 45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| | 46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| | 47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| | 48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| | 49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| | 50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| | 51 | * SUCH DAMAGE. |
| | 52 | * |
| | 53 | * $FreeBSD: src/sys/sys/eventvar.h,v 1.1.2.2 2000/07/18 21:49:12 jlemon Exp $ |
| | 54 | */ |
| | 55 | |
| | 56 | #ifndef _SYS_EVENTVAR_H_ |
| | 57 | #define _SYS_EVENTVAR_H_ |
| | 58 | |
| | 59 | #include <sys/event.h> |
| | 60 | #include <sys/select.h> |
| | 61 | #include <kern/kern_types.h> |
| | 62 | |
| | 63 | #define KQ_NEVENTS 16 /* minimize copy{in,out} calls */ |
| | 64 | #define KQEXTENT 256 /* linear growth by this amount */ |
| | 65 | |
| | 66 | struct kqueue { |
| | 67 | wait_queue_set_t kq_wqs; /* private wait queue set */ |
| | 68 | decl_lck_spin_data( ,kq_lock) /* kqueue lock */ |
| | 69 | int kq_state; |
| | 70 | int kq_count; /* number of queued events */ |
| | 71 | uint32_t kq_nprocess; /* atomic counter for kqueue_process */ |
| | 72 | struct kqtailq kq_head; /* list of queued events */ |
| | 73 | struct selinfo kq_sel; /* parent select/kqueue info */ |
| | 74 | struct proc *kq_p; /* process containing kqueue */ |
| | 75 | int kq_level; /* nesting level */ |
| | 76 | |
| | 77 | #define KQ_SEL 0x01 |
| | 78 | #define KQ_SLEEP 0x02 |
| | 79 | #define KQ_PROCWAIT 0x04 |
| | 80 | #define KQ_KEV32 0x08 |
| | 81 | #define KQ_KEV64 0x10 |
| | 82 | }; |
| | 83 | |
| | 84 | extern struct kqueue *kqueue_alloc(struct proc *); |
| | 85 | extern void kqueue_dealloc(struct kqueue *); |
| | 86 | |
| | 87 | typedef int (*kevent_callback_t)(struct kqueue *, struct kevent64_s *, void *); |
| | 88 | typedef void (*kqueue_continue_t)(struct kqueue *, void *, int); |
| | 89 | |
| | 90 | extern int kevent_register(struct kqueue *, struct kevent64_s *, struct proc *); |
| | 91 | extern int kqueue_scan(struct kqueue *, kevent_callback_t, kqueue_continue_t, |
| | 92 | void *, struct timeval *, struct proc *); |
| | 93 | |
| | 94 | #endif /* !_SYS_EVENTVAR_H_ */ |
projects / apple / xnu.git / blame_incremental