/* * Copyright (c) 2003 Apple Computer, Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /*- * Copyright (c) 1999,2000 Jonathan Lemon <jlemon@FreeBSD.org> * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD: src/sys/sys/eventvar.h,v 1.1.2.2 2000/07/18 21:49:12 jlemon Exp $ */ #ifndef _SYS_EVENTVAR_H_ #define _SYS_EVENTVAR_H_ #include <sys/event.h> #include <sys/select.h> #include <kern/kern_types.h> #define KQ_NEVENTS 16 /* minimize copy{in,out} calls */ #define KQEXTENT 256 /* linear growth by this amount */ struct kqueue { wait_queue_set_t kq_wqs; /* private wait queue set */ decl_lck_spin_data( ,kq_lock) /* kqueue lock */ int kq_state; int kq_count; /* number of queued events */ uint32_t kq_nprocess; /* atomic counter for kqueue_process */ struct kqtailq kq_head; /* list of queued events */ struct selinfo kq_sel; /* parent select/kqueue info */ struct proc *kq_p; /* process containing kqueue */ int kq_level; /* nesting level */ #define KQ_SEL 0x01 #define KQ_SLEEP 0x02 #define KQ_PROCWAIT 0x04 #define KQ_KEV32 0x08 #define KQ_KEV64 0x10 }; extern struct kqueue *kqueue_alloc(struct proc *); extern void kqueue_dealloc(struct kqueue *); typedef int (*kevent_callback_t)(struct kqueue *, struct kevent64_s *, void *); typedef void (*kqueue_continue_t)(struct kqueue *, void *, int); extern int kevent_register(struct kqueue *, struct kevent64_s *, struct proc *); extern int kqueue_scan(struct kqueue *, kevent_callback_t, kqueue_continue_t, void *, struct timeval *, struct proc *); #endif /* !_SYS_EVENTVAR_H_ */