1168191Sjhb/*- 2168191Sjhb * Copyright (c) 2007 Attilio Rao <attilio@freebsd.org> 3168191Sjhb * All rights reserved. 4168191Sjhb * 5168191Sjhb * Redistribution and use in source and binary forms, with or without 6168191Sjhb * modification, are permitted provided that the following conditions 7168191Sjhb * are met: 8168191Sjhb * 1. Redistributions of source code must retain the above copyright 9168191Sjhb * notice(s), this list of conditions and the following disclaimer as 10168191Sjhb * the first lines of this file unmodified other than the possible 11168191Sjhb * addition of one or more copyright notices. 12168191Sjhb * 2. Redistributions in binary form must reproduce the above copyright 13168191Sjhb * notice(s), this list of conditions and the following disclaimer in the 14168191Sjhb * documentation and/or other materials provided with the distribution. 15168191Sjhb * 16168191Sjhb * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY 17168191Sjhb * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18168191Sjhb * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19168191Sjhb * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY 20168191Sjhb * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21168191Sjhb * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22168191Sjhb * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 23168191Sjhb * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24168191Sjhb * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25168191Sjhb * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH 26168191Sjhb * DAMAGE. 27168191Sjhb * 28168191Sjhb * $FreeBSD$ 29168191Sjhb */ 30168191Sjhb 31168191Sjhb#ifndef _SYS__SX_H_ 32168191Sjhb#define _SYS__SX_H_ 33168191Sjhb 34168191Sjhb/* 35168191Sjhb * Shared/exclusive lock main structure definition. 36168191Sjhb */ 37168191Sjhbstruct sx { 38168191Sjhb struct lock_object lock_object; 39168191Sjhb volatile uintptr_t sx_lock; 40168191Sjhb}; 41168191Sjhb 42168191Sjhb#endif /* !_SYS__SX_H_ */ 43