projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c79356b | 1 | /* |
| 5d5c5d0d A |
2 | * Copyright (c) 2003 Apple Computer, Inc. All rights reserved. |
| 3 | * | |
| 2d21ac55 | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| 1c79356b | 5 | * |
| 2d21ac55 A |
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. | |
| 8f6c56a5 | 14 | * |
| 2d21ac55 A |
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 | |
| 8f6c56a5 A |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 2d21ac55 A |
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. | |
| 8f6c56a5 | 25 | * |
| 2d21ac55 | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| 1c79356b | 27 | */ |
| 55e303ae A |
28 | /*- |
| 29 | * Copyright (c) 1999,2000 Jonathan Lemon <jlemon@FreeBSD.org> | |
| 30 | * All rights reserved. | |
| 1c79356b A |
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. | |
| 1c79356b | 40 | * |
| 55e303ae | 41 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 1c79356b A |
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 55e303ae | 44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 1c79356b A |
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 | * | |
| 55e303ae | 53 | * $FreeBSD: src/sys/sys/eventvar.h,v 1.1.2.2 2000/07/18 21:49:12 jlemon Exp $ |
| 1c79356b A |
54 | */ |
| 55 | ||
| 55e303ae A |
56 | #ifndef _SYS_EVENTVAR_H_ |
| 57 | #define _SYS_EVENTVAR_H_ | |
| 58 | ||
| 91447636 | 59 | #include <sys/event.h> |
| 55e303ae A |
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 */ | |
| 9bccf70c | 65 | |
| 55e303ae | 66 | struct kqueue { |
| b0d623f7 A |
67 | wait_queue_set_t kq_wqs; /* private wait queue set */ |
| 68 | decl_lck_spin_data( ,kq_lock) /* kqueue lock */ | |
| 55e303ae | 69 | int kq_state; |
| b0d623f7 A |
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 */ | |
| 91447636 | 73 | struct selinfo kq_sel; /* parent select/kqueue info */ |
| 2d21ac55 A |
74 | struct proc *kq_p; /* process containing kqueue */ |
| 75 | int kq_level; /* nesting level */ | |
| 91447636 | 76 | |
| 55e303ae A |
77 | #define KQ_SEL 0x01 |
| 78 | #define KQ_SLEEP 0x02 | |
| 91447636 | 79 | #define KQ_PROCWAIT 0x04 |
| b0d623f7 A |
80 | #define KQ_KEV32 0x08 |
| 81 | #define KQ_KEV64 0x10 | |
| 55e303ae | 82 | }; |
| 9bccf70c | 83 | |
| 91447636 | 84 | extern struct kqueue *kqueue_alloc(struct proc *); |
| 2d21ac55 | 85 | extern void kqueue_dealloc(struct kqueue *); |
| 91447636 | 86 | |
| b0d623f7 A |
87 | typedef int (*kevent_callback_t)(struct kqueue *, struct kevent64_s *, void *); |
| 88 | typedef void (*kqueue_continue_t)(struct kqueue *, void *, int); | |
| 91447636 | 89 | |
| b0d623f7 A |
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, | |
| 91447636 | 92 | void *, struct timeval *, struct proc *); |
| fe8ab488 | 93 | extern int kqueue_stat(struct kqueue *, void *, int, proc_t); |
| 91447636 | 94 | |
| 55e303ae | 95 | #endif /* !_SYS_EVENTVAR_H_ */ |