58 lines
2.2 KiB
C
58 lines
2.2 KiB
C
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/* $NetBSD: eventvar.h,v 1.8 2008/03/21 21:53:35 ad Exp $ */
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/*-
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* Copyright (c) 1999,2000 Jonathan Lemon <jlemon@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* FreeBSD: src/sys/sys/eventvar.h,v 1.4 2000/07/18 19:31:48 jlemon Exp
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*/
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/*
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* This header is provided for the kqueue implementation and kmem
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* grovellers, and is not expected to be used elsewhere.
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*/
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#ifndef _SYS_EVENTVAR_H_
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#define _SYS_EVENTVAR_H_
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#include <sys/mutex.h>
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#include <sys/selinfo.h>
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#include <sys/filedesc.h>
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#define KQ_NEVENTS 8 /* minimize copy{in,out} calls */
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#define KQ_EXTENT 256 /* linear growth by this amount */
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#define KFILTER_MAXNAME 256 /* maximum size of a filter name */
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#define KFILTER_EXTENT 8 /* grow user_kfilters by this amt */
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struct kqueue {
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TAILQ_HEAD(kqlist, knote) kq_head; /* list of pending event */
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kmutex_t kq_lock; /* mutex for queue access */
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filedesc_t *kq_fdp;
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struct selinfo kq_sel;
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kcondvar_t kq_cv;
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int kq_count; /* number of pending events */
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};
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#endif /* !_SYS_EVENTVAR_H_ */
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