minix/nbsd_include/sys/atomic.h

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2011-02-21 14:13:55 +01:00
/* $NetBSD: atomic.h,v 1.11 2009/11/20 02:17:07 christos Exp $ */
/*-
* Copyright (c) 2007, 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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.
*/
#ifndef _SYS_ATOMIC_H_
#define _SYS_ATOMIC_H_
#include <sys/types.h>
#if !defined(_KERNEL) && !defined(_STANDALONE)
#include <stdint.h>
#endif
__BEGIN_DECLS
/*
* Atomic ADD
*/
void atomic_add_32(volatile uint32_t *, int32_t);
void atomic_add_int(volatile unsigned int *, int);
void atomic_add_long(volatile unsigned long *, long);
void atomic_add_ptr(volatile void *, ssize_t);
void atomic_add_64(volatile uint64_t *, int64_t);
uint32_t atomic_add_32_nv(volatile uint32_t *, int32_t);
unsigned int atomic_add_int_nv(volatile unsigned int *, int);
unsigned long atomic_add_long_nv(volatile unsigned long *, long);
void * atomic_add_ptr_nv(volatile void *, ssize_t);
uint64_t atomic_add_64_nv(volatile uint64_t *, int64_t);
/*
* Atomic AND
*/
void atomic_and_32(volatile uint32_t *, uint32_t);
void atomic_and_uint(volatile unsigned int *, unsigned int);
void atomic_and_ulong(volatile unsigned long *, unsigned long);
void atomic_and_64(volatile uint64_t *, uint64_t);
uint32_t atomic_and_32_nv(volatile uint32_t *, uint32_t);
unsigned int atomic_and_uint_nv(volatile unsigned int *, unsigned int);
unsigned long atomic_and_ulong_nv(volatile unsigned long *, unsigned long);
uint64_t atomic_and_64_nv(volatile uint64_t *, uint64_t);
/*
* Atomic OR
*/
void atomic_or_32(volatile uint32_t *, uint32_t);
void atomic_or_uint(volatile unsigned int *, unsigned int);
void atomic_or_ulong(volatile unsigned long *, unsigned long);
void atomic_or_64(volatile uint64_t *, uint64_t);
uint32_t atomic_or_32_nv(volatile uint32_t *, uint32_t);
unsigned int atomic_or_uint_nv(volatile unsigned int *, unsigned int);
unsigned long atomic_or_ulong_nv(volatile unsigned long *, unsigned long);
uint64_t atomic_or_64_nv(volatile uint64_t *, uint64_t);
/*
* Atomic COMPARE-AND-SWAP
*/
uint32_t atomic_cas_32(volatile uint32_t *, uint32_t, uint32_t);
unsigned int atomic_cas_uint(volatile unsigned int *, unsigned int,
unsigned int);
unsigned long atomic_cas_ulong(volatile unsigned long *, unsigned long,
unsigned long);
void * atomic_cas_ptr(volatile void *, void *, void *);
uint64_t atomic_cas_64(volatile uint64_t *, uint64_t, uint64_t);
/*
* Non-interlocked atomic COMPARE-AND-SWAP.
*/
uint32_t atomic_cas_32_ni(volatile uint32_t *, uint32_t, uint32_t);
unsigned int atomic_cas_uint_ni(volatile unsigned int *, unsigned int,
unsigned int);
unsigned long atomic_cas_ulong_ni(volatile unsigned long *, unsigned long,
unsigned long);
void * atomic_cas_ptr_ni(volatile void *, void *, void *);
uint64_t atomic_cas_64_ni(volatile uint64_t *, uint64_t, uint64_t);
/*
* Atomic SWAP
*/
uint32_t atomic_swap_32(volatile uint32_t *, uint32_t);
unsigned int atomic_swap_uint(volatile unsigned int *, unsigned int);
unsigned long atomic_swap_ulong(volatile unsigned long *, unsigned long);
void * atomic_swap_ptr(volatile void *, void *);
uint64_t atomic_swap_64(volatile uint64_t *, uint64_t);
/*
* Atomic DECREMENT
*/
void atomic_dec_32(volatile uint32_t *);
void atomic_dec_uint(volatile unsigned int *);
void atomic_dec_ulong(volatile unsigned long *);
void atomic_dec_ptr(volatile void *);
void atomic_dec_64(volatile uint64_t *);
uint32_t atomic_dec_32_nv(volatile uint32_t *);
unsigned int atomic_dec_uint_nv(volatile unsigned int *);
unsigned long atomic_dec_ulong_nv(volatile unsigned long *);
void * atomic_dec_ptr_nv(volatile void *);
uint64_t atomic_dec_64_nv(volatile uint64_t *);
/*
* Atomic INCREMENT
*/
void atomic_inc_32(volatile uint32_t *);
void atomic_inc_uint(volatile unsigned int *);
void atomic_inc_ulong(volatile unsigned long *);
void atomic_inc_ptr(volatile void *);
void atomic_inc_64(volatile uint64_t *);
uint32_t atomic_inc_32_nv(volatile uint32_t *);
unsigned int atomic_inc_uint_nv(volatile unsigned int *);
unsigned long atomic_inc_ulong_nv(volatile unsigned long *);
void * atomic_inc_ptr_nv(volatile void *);
uint64_t atomic_inc_64_nv(volatile uint64_t *);
/*
* Memory barrier operations
*/
void membar_enter(void);
void membar_exit(void);
void membar_producer(void);
void membar_consumer(void);
void membar_sync(void);
__END_DECLS
#endif /* ! _SYS_ATOMIC_H_ */