diff options
| author | Merry <git@mary.rs> | 2022-03-28 23:05:54 +0100 |
|---|---|---|
| committer | merry <git@mary.rs> | 2022-04-02 20:55:36 +0100 |
| commit | b4746529e15daabd24ce4a8e07cf033f2802f345 (patch) | |
| tree | be4b22f86d88284e9e35f9ac12e7937e42ee9fc1 /src/common/atomic_ops.h | |
| parent | 7f1e66e94be9a207bf5ec21cd6f02562bde25eca (diff) | |
atomic_ops: Implement AtomicLoad128
Diffstat (limited to 'src/common/atomic_ops.h')
| -rw-r--r-- | src/common/atomic_ops.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/common/atomic_ops.h b/src/common/atomic_ops.h index b94d73c7a6..b963e7b998 100644 --- a/src/common/atomic_ops.h +++ b/src/common/atomic_ops.h @@ -46,6 +46,13 @@ namespace Common { reinterpret_cast<__int64*>(expected.data())) != 0; } +[[nodiscard]] inline u128 AtomicLoad128(volatile u64* pointer) { + u128 result{}; + _InterlockedCompareExchange128(reinterpret_cast<volatile __int64*>(pointer), result[1], + result[0], reinterpret_cast<__int64*>(result.data())); + return result; +} + #else [[nodiscard]] inline bool AtomicCompareAndSwap(volatile u8* pointer, u8 value, u8 expected) { @@ -72,6 +79,16 @@ namespace Common { return __sync_bool_compare_and_swap((unsigned __int128*)pointer, expected_a, value_a); } +[[nodiscard]] inline u128 AtomicLoad128(volatile u64* pointer) { + unsigned __int128 zeros_a = 0; + unsigned __int128 result_a = + __sync_val_compare_and_swap((unsigned __int128*)pointer, zeros_a, zeros_a); + + u128 result; + std::memcpy(result.data(), &result_a, sizeof(u128)); + return result; +} + #endif } // namespace Common |