diff options
| -rw-r--r-- | src/common/atomic_ops.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/src/common/atomic_ops.h b/src/common/atomic_ops.h index b963e7b99..69fde8421 100644 --- a/src/common/atomic_ops.h +++ b/src/common/atomic_ops.h @@ -46,6 +46,43 @@ namespace Common { reinterpret_cast<__int64*>(expected.data())) != 0; } +[[nodiscard]] inline bool AtomicCompareAndSwap(volatile u8* pointer, u8 value, u8 expected, + u8& actual) { + actual = + _InterlockedCompareExchange8(reinterpret_cast<volatile char*>(pointer), value, expected); + return actual == expected; +} + +[[nodiscard]] inline bool AtomicCompareAndSwap(volatile u16* pointer, u16 value, u16 expected, + u16& actual) { + actual = + _InterlockedCompareExchange16(reinterpret_cast<volatile short*>(pointer), value, expected); + return actual == expected; +} + +[[nodiscard]] inline bool AtomicCompareAndSwap(volatile u32* pointer, u32 value, u32 expected, + u32& actual) { + actual = + _InterlockedCompareExchange(reinterpret_cast<volatile long*>(pointer), value, expected); + return actual == expected; +} + +[[nodiscard]] inline bool AtomicCompareAndSwap(volatile u64* pointer, u64 value, u64 expected, + u64& actual) { + actual = _InterlockedCompareExchange64(reinterpret_cast<volatile __int64*>(pointer), value, + expected); + return actual == expected; +} + +[[nodiscard]] inline bool AtomicCompareAndSwap(volatile u64* pointer, u128 value, u128 expected, + u128& actual) { + const bool result = + _InterlockedCompareExchange128(reinterpret_cast<volatile __int64*>(pointer), value[1], + value[0], reinterpret_cast<__int64*>(expected.data())) != 0; + actual = expected; + return result; +} + [[nodiscard]] inline u128 AtomicLoad128(volatile u64* pointer) { u128 result{}; _InterlockedCompareExchange128(reinterpret_cast<volatile __int64*>(pointer), result[1], @@ -79,6 +116,42 @@ namespace Common { return __sync_bool_compare_and_swap((unsigned __int128*)pointer, expected_a, value_a); } +[[nodiscard]] inline bool AtomicCompareAndSwap(volatile u8* pointer, u8 value, u8 expected, + u8& actual) { + actual = __sync_val_compare_and_swap(pointer, expected, value); + return actual == expected; +} + +[[nodiscard]] inline bool AtomicCompareAndSwap(volatile u16* pointer, u16 value, u16 expected, + u16& actual) { + actual = __sync_val_compare_and_swap(pointer, expected, value); + return actual == expected; +} + +[[nodiscard]] inline bool AtomicCompareAndSwap(volatile u32* pointer, u32 value, u32 expected, + u32& actual) { + actual = __sync_val_compare_and_swap(pointer, expected, value); + return actual == expected; +} + +[[nodiscard]] inline bool AtomicCompareAndSwap(volatile u64* pointer, u64 value, u64 expected, + u64& actual) { + actual = __sync_val_compare_and_swap(pointer, expected, value); + return actual == expected; +} + +[[nodiscard]] inline bool AtomicCompareAndSwap(volatile u64* pointer, u128 value, u128 expected, + u128& actual) { + unsigned __int128 value_a; + unsigned __int128 expected_a; + unsigned __int128 actual_a; + std::memcpy(&value_a, value.data(), sizeof(u128)); + std::memcpy(&expected_a, expected.data(), sizeof(u128)); + actual_a = __sync_val_compare_and_swap((unsigned __int128*)pointer, expected_a, value_a); + std::memcpy(actual.data(), &actual_a, sizeof(u128)); + return actual_a == expected_a; +} + [[nodiscard]] inline u128 AtomicLoad128(volatile u64* pointer) { unsigned __int128 zeros_a = 0; unsigned __int128 result_a = |