71 lines
2.9 KiB
C
71 lines
2.9 KiB
C
/* $OpenBSD: _lock.h,v 1.4 2019/04/23 13:35:12 visa Exp $ */
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/*-
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* Copyright (c) 1997 Berkeley Software Design, Inc. 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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* 3. Berkeley Software Design Inc's name may not be used to endorse or
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* promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``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 BERKELEY SOFTWARE DESIGN INC 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: head/sys/sys/_lock.h 179025 2008-05-15 20:10:06Z attilio $
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*/
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#ifndef _SYS__LOCK_H_
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#define _SYS__LOCK_H_
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#define LO_CLASSFLAGS 0x0000ffff /* Class specific flags. */
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#define LO_INITIALIZED 0x00010000 /* Lock has been initialized. */
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#define LO_WITNESS 0x00020000 /* Should witness monitor this lock. */
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#define LO_QUIET 0x00040000 /* Don't log locking operations. */
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#define LO_RECURSABLE 0x00080000 /* Lock may recurse. */
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#define LO_SLEEPABLE 0x00100000 /* Lock may be held while sleeping. */
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#define LO_UPGRADABLE 0x00200000 /* Lock may be upgraded/downgraded. */
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#define LO_DUPOK 0x00400000 /* Don't check for duplicate acquires */
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#define LO_IS_VNODE 0x00800000 /* Tell WITNESS about a VNODE lock */
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#define LO_CLASSMASK 0x0f000000 /* Class index bitmask. */
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#define LO_NOPROFILE 0x10000000 /* Don't profile this lock */
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#define LO_NEW 0x20000000 /* Don't check for double-init */
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#define LO_CLASSSHIFT 24
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enum lock_class_index {
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LO_CLASS_KERNEL_LOCK,
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LO_CLASS_SCHED_LOCK,
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LO_CLASS_MUTEX,
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LO_CLASS_RWLOCK,
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LO_CLASS_RRWLOCK
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};
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struct lock_object {
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const struct lock_type *lo_type;
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const char *lo_name; /* Individual lock name. */
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struct witness *lo_witness; /* Data for witness. */
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unsigned int lo_flags;
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};
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struct lock_type {
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const char *lt_name;
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};
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#endif /* !_SYS__LOCK_H_ */
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