| /**************************************************************************** |
| ** |
| ** Copyright (C) 2019 Intel Corporation. |
| ** |
| ** Permission is hereby granted, free of charge, to any person obtaining a copy |
| ** of this software and associated documentation files (the "Software"), to deal |
| ** in the Software without restriction, including without limitation the rights |
| ** to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| ** copies of the Software, and to permit persons to whom the Software is |
| ** furnished to do so, subject to the following conditions: |
| ** |
| ** The above copyright notice and this permission notice shall be included in |
| ** all copies or substantial portions of the Software. |
| ** |
| ** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| ** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| ** FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| ** AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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| ** OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| ** THE SOFTWARE. |
| ** |
| ****************************************************************************/ |
| |
| #ifndef FFD_ATOMIC_C11_H |
| #define FFD_ATOMIC_C11_H |
| |
| /* atomics */ |
| /* Using the C11 <stdatomic.h> header or C++11's <atomic> |
| */ |
| |
| #if defined(__cplusplus) |
| # include <atomic> |
| # define ffd_atomic_pointer(type) std::atomic<type*> |
| # define FFD_ATOMIC_RELAXED std::memory_order_relaxed |
| # define FFD_ATOMIC_ACQUIRE std::memory_order_acquire |
| # define FFD_ATOMIC_RELEASE std::memory_order_release |
| // acq_rel & cst not necessary |
| typedef std::atomic<int> ffd_atomic_int; |
| #else |
| # include <stdatomic.h> |
| # define ffd_atomic_pointer(type) _Atomic(type*) |
| # define FFD_ATOMIC_RELAXED memory_order_relaxed |
| # define FFD_ATOMIC_ACQUIRE memory_order_acquire |
| # define FFD_ATOMIC_RELEASE memory_order_release |
| // acq_rel & cst not necessary |
| |
| typedef atomic_int ffd_atomic_int; |
| #endif |
| |
| #define FFD_ATOMIC_INIT(val) ATOMIC_VAR_INIT(val) |
| |
| #define ffd_atomic_load(ptr, order) \ |
| atomic_load_explicit(ptr, order) |
| #define ffd_atomic_store(ptr, val, order) \ |
| atomic_store_explicit(ptr, val, order) |
| #define ffd_atomic_exchange(ptr,val,order) \ |
| atomic_exchange_explicit(ptr, val, order) |
| #define ffd_atomic_compare_exchange(ptr, expected, desired, order1, order2) \ |
| atomic_compare_exchange_strong_explicit(ptr, expected, desired, order1, order2) |
| #define ffd_atomic_add_fetch(ptr, val, order) \ |
| (atomic_fetch_add_explicit(ptr, val, order) + (val)) |
| |
| #endif |
