| /* |
| * 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_ */
|
