| /* |
| * Copyright © 2018, VideoLAN and dav1d authors |
| * All rights reserved. |
| * |
| * 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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 MSCVER_STDATOMIC_H_ |
| #define MSCVER_STDATOMIC_H_ |
| |
| #if !defined(__cplusplus) && defined(_MSC_VER) |
| |
| #pragma warning(push) |
| #pragma warning(disable:4067) /* newline for __has_include_next */ |
| |
| #if defined(__clang__) && __has_include_next(<stdatomic.h>) |
| /* use the clang stdatomic.h with clang-cl*/ |
| # include_next <stdatomic.h> |
| #else /* ! stdatomic.h */ |
| |
| #include <windows.h> |
| |
| #include "common/attributes.h" |
| |
| typedef volatile LONG __declspec(align(32)) atomic_int; |
| typedef volatile ULONG __declspec(align(32)) atomic_uint; |
| |
| typedef enum { |
| memory_order_relaxed, |
| memory_order_acquire |
| } msvc_atomic_memory_order; |
| |
| #define atomic_init(p_a, v) do { *(p_a) = (v); } while(0) |
| #define atomic_store(p_a, v) InterlockedExchange((LONG*)p_a, v) |
| #define atomic_load(p_a) InterlockedCompareExchange((LONG*)p_a, 0, 0) |
| #define atomic_load_explicit(p_a, mo) atomic_load(p_a) |
| |
| /* |
| * TODO use a special call to increment/decrement |
| * using InterlockedIncrement/InterlockedDecrement |
| */ |
| #define atomic_fetch_add(p_a, inc) InterlockedExchangeAdd(p_a, inc) |
| #define atomic_fetch_sub(p_a, dec) InterlockedExchangeAdd(p_a, -(dec)) |
| |
| #endif /* ! stdatomic.h */ |
| |
| #pragma warning(pop) |
| |
| #endif /* !defined(__cplusplus) && defined(_MSC_VER) */ |
| |
| #endif /* MSCVER_STDATOMIC_H_ */ |
