49 lines
2.0 KiB
C
49 lines
2.0 KiB
C
/* $NetBSD: mutex_impl.h,v 1.1 2010/02/21 01:46:36 darran Exp $ */
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/*-
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* Copyright (c) 2010 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe and Andrew Doran.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _COMPAT_OPENSOLARIS_SYS_MUTEX_IMPL_H
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#define _COMPAT_OPENSOLARIS_SYS_MUTEX_IMPL_H
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#define __MUTEX_PRIVATE
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#include <sys/mutex.h>
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#define mtx_owner u.mtxa_owner
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#define MUTEX_THREAD ((uintptr_t)-16L)
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#define MUTEX_OWNER(mtx) \
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((mtx)->mtx_owner & MUTEX_THREAD)
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#define MUTEX_NO_OWNER 0
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#define MUTEX_BIT_SPIN 0x01
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#define MUTEX_TYPE_ADAPTIVE(mtx) (((mtx)->mtx_owner & MUTEX_BIT_SPIN) == 0)
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#define MUTEX_TYPE_SPIN(mtx) (((mtx)->mtx_owner & MUTEX_BIT_SPIN) != 0)
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#endif
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