6c8f7fc3ba
. add all sys/sys headers not already present to help compiling . take netbsd dirent.h and struct dirent; main result is introducing d_type and d_namlen that have to be set by getdents() in all FS code implementing it . d_off is gone . alignment of the struct has become 8 bytes instead of 4 . remove _MAX_BLOCK_SIZE, _MIN_BLOCK_SIZE, _STATIC_BLOCK_SIZE . libminlib: cleanup unused yet duplicate code . mfs: throw out the long-broken v1, v2 support . new test for dirent contents filled by getdents() Change-Id: I1459755c7ba5e5d1c9396d3a587ce6e63ddc283e
123 lines
4.9 KiB
C
123 lines
4.9 KiB
C
/* $NetBSD: simplelock.h,v 1.8 2008/04/28 20:24:11 martin Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1999, 2000, 2006, 2007 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
|
|
* NASA Ames Research Center.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Ross Harvey.
|
|
*
|
|
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 1995
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code contains ideas from software contributed to Berkeley by
|
|
* Avadis Tevanian, Jr., Michael Wayne Young, and the Mach Operating
|
|
* System project at Carnegie-Mellon University.
|
|
*
|
|
* 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.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
|
|
*
|
|
* @(#)lock.h 8.12 (Berkeley) 5/19/95
|
|
*/
|
|
|
|
#ifndef _SYS_SIMPLELOCK_H_
|
|
#define _SYS_SIMPLELOCK_H_
|
|
|
|
#if defined(_KERNEL_OPT)
|
|
#include "opt_multiprocessor.h"
|
|
#include "opt_lockdebug.h"
|
|
#endif
|
|
|
|
#include <machine/types.h>
|
|
#include <machine/lock.h>
|
|
|
|
/*
|
|
* The simple lock. Provides a simple spinning mutex. Note the
|
|
* member which is used in atomic operations must be aligned in
|
|
* order for it to work on the widest range of processor types.
|
|
*/
|
|
struct simplelock {
|
|
__cpu_simple_lock_t lock_data;
|
|
#ifdef __CPU_SIMPLE_LOCK_PAD
|
|
/*
|
|
* For binary compatibility where the lock word has been
|
|
* made shorter.
|
|
*/
|
|
uint8_t lock_pad[3];
|
|
#endif
|
|
};
|
|
|
|
#define SIMPLELOCK_INITIALIZER { .lock_data = __SIMPLELOCK_UNLOCKED }
|
|
|
|
#ifdef _KERNEL
|
|
|
|
#if defined(MULTIPROCESSOR) || defined(LOCKDEBUG)
|
|
#define simple_lock_init(alp) __cpu_simple_lock_init(&(alp)->lock_data)
|
|
#define simple_lock(alp) __cpu_simple_lock(&(alp)->lock_data)
|
|
#define simple_lock_held(alp) (__SIMPLELOCK_LOCKED_P(&(alp)->lock_data))
|
|
#define simple_lock_try(alp) __cpu_simple_lock_try(&(alp)->lock_data)
|
|
#define simple_unlock(alp) __cpu_simple_unlock(&(alp)->lock_data)
|
|
#else
|
|
#define simple_lock_nothing(alp) \
|
|
do { \
|
|
(void)alp; \
|
|
} while (0);
|
|
#define simple_lock_init(alp) simple_lock_nothing(alp)
|
|
#define simple_lock(alp) simple_lock_nothing(alp)
|
|
#define simple_lock_held(alp) 1
|
|
#define simple_lock_try(alp) 1
|
|
#define simple_unlock(alp) simple_lock_nothing(alp)
|
|
#endif
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* _SYS_SIMPLELOCK_H_ */
|