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