projects / mirror_ovs.git / blame
| Commit | Line | Data |
|---|---|---|
| 31a3fc6e | 1 | /* |
| 7d53f6b0 | 2 | * Copyright (c) 2013, 2014 Nicira, Inc. |
| 31a3fc6e BP |
3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 5 | * you may not use this file except in compliance with the License. | |
| 6 | * You may obtain a copy of the License at: | |
| 7 | * | |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 9 | * | |
| 10 | * Unless required by applicable law or agreed to in writing, software | |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 13 | * See the License for the specific language governing permissions and | |
| 14 | * limitations under the License. | |
| 15 | */ | |
| 16 | ||
| 17 | /* This header implements atomic operation primitives on compilers that | |
| 18 | * have built-in support for C11 <stdatomic.h> */ | |
| 19 | #ifndef IN_OVS_ATOMIC_H | |
| 20 | #error "This header should only be included indirectly via ovs-atomic.h." | |
| 21 | #endif | |
| 22 | ||
| 23 | #include <stdatomic.h> | |
| 24 | ||
| 7d53f6b0 BP |
25 | #define OMIT_STANDARD_ATOMIC_TYPES 1 |
| 26 | #define ATOMIC(TYPE) _Atomic(TYPE) | |
| 31a3fc6e BP |
27 | |
| 28 | #define atomic_read(SRC, DST) \ | |
| 29 | atomic_read_explicit(SRC, DST, memory_order_seq_cst) | |
| 30 | #define atomic_read_explicit(SRC, DST, ORDER) \ | |
| 31 | (*(DST) = atomic_load_explicit(SRC, ORDER), \ | |
| 32 | (void) 0) | |
| 33 | ||
| 34 | #define atomic_add(RMW, ARG, ORIG) \ | |
| 35 | atomic_add_explicit(RMW, ARG, ORIG, memory_order_seq_cst) | |
| 36 | #define atomic_sub(RMW, ARG, ORIG) \ | |
| 37 | atomic_sub_explicit(RMW, ARG, ORIG, memory_order_seq_cst) | |
| 38 | #define atomic_or(RMW, ARG, ORIG) \ | |
| 39 | atomic_or_explicit(RMW, ARG, ORIG, memory_order_seq_cst) | |
| 40 | #define atomic_xor(RMW, ARG, ORIG) \ | |
| 41 | atomic_xor_explicit(RMW, ARG, ORIG, memory_order_seq_cst) | |
| 42 | #define atomic_and(RMW, ARG, ORIG) \ | |
| 43 | atomic_and_explicit(RMW, ARG, ORIG, memory_order_seq_cst) | |
| 44 | ||
| 45 | #define atomic_add_explicit(RMW, ARG, ORIG, ORDER) \ | |
| 46 | (*(ORIG) = atomic_fetch_add_explicit(RMW, ARG, ORDER), (void) 0) | |
| 47 | #define atomic_sub_explicit(RMW, ARG, ORIG, ORDER) \ | |
| 48 | (*(ORIG) = atomic_fetch_sub_explicit(RMW, ARG, ORDER), (void) 0) | |
| 49 | #define atomic_or_explicit(RMW, ARG, ORIG, ORDER) \ | |
| 50 | (*(ORIG) = atomic_fetch_or_explicit(RMW, ARG, ORDER), (void) 0) | |
| 51 | #define atomic_xor_explicit(RMW, ARG, ORIG, ORDER) \ | |
| 52 | (*(ORIG) = atomic_fetch_xor_explicit(RMW, ARG, ORDER), (void) 0) | |
| 53 | #define atomic_and_explicit(RMW, ARG, ORIG, ORDER) \ | |
| 54 | (*(ORIG) = atomic_fetch_and_explicit(RMW, ARG, ORDER), (void) 0) |