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/*
* Copyright (c) 2013 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* This header implements atomic operation primitives on compilers that
* have built-in support for C11 <stdatomic.h> */
#ifndef IN_OVS_ATOMIC_H
#error "This header should only be included indirectly via ovs-atomic.h."
#endif
#include <stdatomic.h>
/* Nonstandard atomic types. */
typedef _Atomic(uint8_t) atomic_uint8_t;
typedef _Atomic(uint16_t) atomic_uint16_t;
typedef _Atomic(uint32_t) atomic_uint32_t;
typedef _Atomic(uint64_t) atomic_uint64_t;
typedef _Atomic(int8_t) atomic_int8_t;
typedef _Atomic(int16_t) atomic_int16_t;
typedef _Atomic(int32_t) atomic_int32_t;
typedef _Atomic(int64_t) atomic_int64_t;
#define atomic_read(SRC, DST) \
atomic_read_explicit(SRC, DST, memory_order_seq_cst)
#define atomic_read_explicit(SRC, DST, ORDER) \
(*(DST) = atomic_load_explicit(SRC, ORDER), \
(void) 0)
#define atomic_add(RMW, ARG, ORIG) \
atomic_add_explicit(RMW, ARG, ORIG, memory_order_seq_cst)
#define atomic_sub(RMW, ARG, ORIG) \
atomic_sub_explicit(RMW, ARG, ORIG, memory_order_seq_cst)
#define atomic_or(RMW, ARG, ORIG) \
atomic_or_explicit(RMW, ARG, ORIG, memory_order_seq_cst)
#define atomic_xor(RMW, ARG, ORIG) \
atomic_xor_explicit(RMW, ARG, ORIG, memory_order_seq_cst)
#define atomic_and(RMW, ARG, ORIG) \
atomic_and_explicit(RMW, ARG, ORIG, memory_order_seq_cst)
#define atomic_add_explicit(RMW, ARG, ORIG, ORDER) \
(*(ORIG) = atomic_fetch_add_explicit(RMW, ARG, ORDER), (void) 0)
#define atomic_sub_explicit(RMW, ARG, ORIG, ORDER) \
(*(ORIG) = atomic_fetch_sub_explicit(RMW, ARG, ORDER), (void) 0)
#define atomic_or_explicit(RMW, ARG, ORIG, ORDER) \
(*(ORIG) = atomic_fetch_or_explicit(RMW, ARG, ORDER), (void) 0)
#define atomic_xor_explicit(RMW, ARG, ORIG, ORDER) \
(*(ORIG) = atomic_fetch_xor_explicit(RMW, ARG, ORDER), (void) 0)
#define atomic_and_explicit(RMW, ARG, ORIG, ORDER) \
(*(ORIG) = atomic_fetch_and_explicit(RMW, ARG, ORDER), (void) 0)
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