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atomic_ops: Implement AtomicLoad128
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@ -46,6 +46,13 @@ namespace Common {
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reinterpret_cast<__int64*>(expected.data())) != 0;
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}
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[[nodiscard]] inline u128 AtomicLoad128(volatile u64* pointer) {
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u128 result{};
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_InterlockedCompareExchange128(reinterpret_cast<volatile __int64*>(pointer), result[1],
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result[0], reinterpret_cast<__int64*>(result.data()));
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return result;
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}
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#else
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[[nodiscard]] inline bool AtomicCompareAndSwap(volatile u8* pointer, u8 value, u8 expected) {
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@ -72,6 +79,16 @@ namespace Common {
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return __sync_bool_compare_and_swap((unsigned __int128*)pointer, expected_a, value_a);
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}
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[[nodiscard]] inline u128 AtomicLoad128(volatile u64* pointer) {
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unsigned __int128 zeros_a = 0;
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unsigned __int128 result_a =
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__sync_val_compare_and_swap((unsigned __int128*)pointer, zeros_a, zeros_a);
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u128 result;
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std::memcpy(result.data(), &result_a, sizeof(u128));
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return result;
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}
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#endif
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} // namespace Common
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