Annotation of sys/arch/amd64/include/mutex.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: mutex.h,v 1.3 2005/07/18 02:43:24 fgsch Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 2004 Artur Grabowski <art@openbsd.org>
! 5: * All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: *
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. The name of the author may not be used to endorse or promote products
! 14: * derived from this software without specific prior written permission.
! 15: *
! 16: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
! 17: * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
! 18: * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
! 19: * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
! 20: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
! 21: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
! 22: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
! 23: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
! 24: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
! 25: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 26: */
! 27: #ifndef _AMD64_MUTEX_H_
! 28: #define _AMD64_MUTEX_H_
! 29:
! 30: struct mutex {
! 31: int mtx_wantipl;
! 32: int mtx_oldipl;
! 33: __volatile void *mtx_owner;
! 34: };
! 35:
! 36: #define MUTEX_INITIALIZER(ipl) { (ipl), 0, NULL }
! 37:
! 38: #define MUTEX_ASSERT_LOCKED(mtx) do { \
! 39: if ((mtx)->mtx_owner != curcpu()) \
! 40: panic("mutex %p not held in %s", (mtx), __func__); \
! 41: } while (0)
! 42:
! 43: #define MUTEX_ASSERT_UNLOCKED(mtx) do { \
! 44: if ((mtx)->mtx_owner == curcpu()) \
! 45: panic("mutex %p held in %s", (mtx), __func__); \
! 46: } while (0)
! 47:
! 48: #define MUTEX_OLDIPL(mtx) (mtx)->mtx_oldipl
! 49:
! 50: #endif
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