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Diffstat (limited to 'sys/sys/eventvar.h')
| -rw-r--r-- | sys/sys/eventvar.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/sys/sys/eventvar.h b/sys/sys/eventvar.h new file mode 100644 index 0000000..44338c5 --- /dev/null +++ b/sys/sys/eventvar.h @@ -0,0 +1,64 @@ +/* $OpenBSD: eventvar.h,v 1.9 2020/04/07 13:27:52 visa Exp $ */ + +/*- + * 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 1.3 2000/05/26 02:06:54 jake Exp $ + */ + +#ifndef _SYS_EVENTVAR_H_ +#define _SYS_EVENTVAR_H_ + +#include <sys/task.h> + +#define KQ_NEVENTS 8 /* minimize copy{in,out} calls */ +#define KQEXTENT 256 /* linear growth by this amount */ + +/* + * Locking: + * a atomic operations + */ +struct kqueue { + TAILQ_HEAD(, knote) kq_head; /* list of pending event */ + int kq_count; /* number of pending events */ + u_int kq_refs; /* [a] number of references */ + struct selinfo kq_sel; + struct filedesc *kq_fdp; + + LIST_ENTRY(kqueue) kq_next; + + int kq_knlistsize; /* size of kq_knlist */ + struct knlist *kq_knlist; /* list of attached knotes */ + u_long kq_knhashmask; /* size of kq_knhash */ + struct knlist *kq_knhash; /* hash table for attached knotes */ + struct task kq_task; /* deferring of activation */ + + int kq_state; +#define KQ_SEL 0x01 +#define KQ_SLEEP 0x02 +#define KQ_DYING 0x04 +}; + +#endif /* !_SYS_EVENTVAR_H_ */ |