mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-11-15 17:39:28 +00:00
432 lines
No EOL
26 KiB
C++
432 lines
No EOL
26 KiB
C++
/*
|
|
* Copyright (c) Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#pragma once
|
|
#include <vapours/common.hpp>
|
|
#include <vapours/assert.hpp>
|
|
|
|
namespace ams::util {
|
|
|
|
namespace impl {
|
|
|
|
template<typename T>
|
|
struct AtomicIntegerStorage;
|
|
|
|
template<typename T> requires (sizeof(T) == sizeof(u8))
|
|
struct AtomicIntegerStorage<T> {
|
|
using Type = u8;
|
|
};
|
|
|
|
template<typename T> requires (sizeof(T) == sizeof(u16))
|
|
struct AtomicIntegerStorage<T> {
|
|
using Type = u16;
|
|
};
|
|
|
|
template<typename T> requires (sizeof(T) == sizeof(u32))
|
|
struct AtomicIntegerStorage<T> {
|
|
using Type = u32;
|
|
};
|
|
|
|
template<typename T> requires (sizeof(T) == sizeof(u64))
|
|
struct AtomicIntegerStorage<T> {
|
|
using Type = u64;
|
|
};
|
|
|
|
template<typename T>
|
|
concept UsableAtomicType = (sizeof(T) <= sizeof(u64)) && !std::is_const<T>::value && !std::is_volatile<T>::value && (std::is_pointer<T>::value || requires (const T &t) {
|
|
std::bit_cast<typename AtomicIntegerStorage<T>::Type, T>(t);
|
|
});
|
|
|
|
template<UsableAtomicType T>
|
|
using AtomicStorage = typename AtomicIntegerStorage<T>::Type;
|
|
|
|
|
|
static_assert(std::same_as<AtomicStorage<void *>, u64>);
|
|
|
|
static_assert(std::same_as<AtomicStorage<s8>, u8>);
|
|
static_assert(std::same_as<AtomicStorage<u8>, u8>);
|
|
static_assert(std::same_as<AtomicStorage<s16>, u16>);
|
|
static_assert(std::same_as<AtomicStorage<u16>, u16>);
|
|
static_assert(std::same_as<AtomicStorage<s32>, u32>);
|
|
static_assert(std::same_as<AtomicStorage<u32>, u32>);
|
|
static_assert(std::same_as<AtomicStorage<s64>, u64>);
|
|
static_assert(std::same_as<AtomicStorage<u64>, u64>);
|
|
|
|
ALWAYS_INLINE void ClearExclusiveForAtomic() {
|
|
__asm__ __volatile__("clrex" ::: "memory");
|
|
}
|
|
|
|
#define AMS_UTIL_IMPL_DEFINE_ATOMIC_LOAD_FUNCTION(_FNAME_, _MNEMONIC_) \
|
|
template<std::unsigned_integral T> T _FNAME_ ##ForAtomic(const volatile T *); \
|
|
\
|
|
template<> ALWAYS_INLINE u8 _FNAME_ ##ForAtomic(const volatile u8 *p) { u8 v; __asm__ __volatile__(_MNEMONIC_ "b %w[v], %[p]" : [v]"=r"(v) : [p]"Q"(*p) : "memory"); return v; } \
|
|
template<> ALWAYS_INLINE u16 _FNAME_ ##ForAtomic(const volatile u16 *p) { u16 v; __asm__ __volatile__(_MNEMONIC_ "h %w[v], %[p]" : [v]"=r"(v) : [p]"Q"(*p) : "memory"); return v; } \
|
|
template<> ALWAYS_INLINE u32 _FNAME_ ##ForAtomic(const volatile u32 *p) { u32 v; __asm__ __volatile__(_MNEMONIC_ " %w[v], %[p]" : [v]"=r"(v) : [p]"Q"(*p) : "memory"); return v; } \
|
|
template<> ALWAYS_INLINE u64 _FNAME_ ##ForAtomic(const volatile u64 *p) { u64 v; __asm__ __volatile__(_MNEMONIC_ " %[v], %[p]" : [v]"=r"(v) : [p]"Q"(*p) : "memory"); return v; }
|
|
|
|
AMS_UTIL_IMPL_DEFINE_ATOMIC_LOAD_FUNCTION(LoadAcquire, "ldar")
|
|
AMS_UTIL_IMPL_DEFINE_ATOMIC_LOAD_FUNCTION(LoadExclusive, "ldxr")
|
|
AMS_UTIL_IMPL_DEFINE_ATOMIC_LOAD_FUNCTION(LoadAcquireExclusive, "ldaxr")
|
|
|
|
#undef AMS_UTIL_IMPL_DEFINE_ATOMIC_LOAD_FUNCTION
|
|
|
|
template<std::unsigned_integral T> void StoreReleaseForAtomic(volatile T *, T);
|
|
|
|
template<> ALWAYS_INLINE void StoreReleaseForAtomic(volatile u8 *p, u8 v) { __asm__ __volatile__("stlrb %w[v], %[p]" : : [v]"r"(v), [p]"Q"(*p) : "memory"); }
|
|
template<> ALWAYS_INLINE void StoreReleaseForAtomic(volatile u16 *p, u16 v) { __asm__ __volatile__("stlrh %w[v], %[p]" : : [v]"r"(v), [p]"Q"(*p) : "memory"); }
|
|
template<> ALWAYS_INLINE void StoreReleaseForAtomic(volatile u32 *p, u32 v) { __asm__ __volatile__("stlr %w[v], %[p]" : : [v]"r"(v), [p]"Q"(*p) : "memory"); }
|
|
template<> ALWAYS_INLINE void StoreReleaseForAtomic(volatile u64 *p, u64 v) { __asm__ __volatile__("stlr %[v], %[p]" : : [v]"r"(v), [p]"Q"(*p) : "memory"); }
|
|
|
|
#define AMS_UTIL_IMPL_DEFINE_ATOMIC_STORE_EXCLUSIVE_FUNCTION(_FNAME_, _MNEMONIC_) \
|
|
template<std::unsigned_integral T> bool _FNAME_ ##ForAtomic(volatile T *, T); \
|
|
\
|
|
template<> ALWAYS_INLINE bool _FNAME_ ##ForAtomic(volatile u8 *p, u8 v) { int result; __asm__ __volatile__(_MNEMONIC_ "b %w[result], %w[v], %[p]" : [result]"=&r"(result) : [v]"r"(v), [p]"Q"(*p) : "memory"); return result == 0; } \
|
|
template<> ALWAYS_INLINE bool _FNAME_ ##ForAtomic(volatile u16 *p, u16 v) { int result; __asm__ __volatile__(_MNEMONIC_ "h %w[result], %w[v], %[p]" : [result]"=&r"(result) : [v]"r"(v), [p]"Q"(*p) : "memory"); return result == 0; } \
|
|
template<> ALWAYS_INLINE bool _FNAME_ ##ForAtomic(volatile u32 *p, u32 v) { int result; __asm__ __volatile__(_MNEMONIC_ " %w[result], %w[v], %[p]" : [result]"=&r"(result) : [v]"r"(v), [p]"Q"(*p) : "memory"); return result == 0; } \
|
|
template<> ALWAYS_INLINE bool _FNAME_ ##ForAtomic(volatile u64 *p, u64 v) { int result; __asm__ __volatile__(_MNEMONIC_ " %w[result], %[v], %[p]" : [result]"=&r"(result) : [v]"r"(v), [p]"Q"(*p) : "memory"); return result == 0; }
|
|
|
|
AMS_UTIL_IMPL_DEFINE_ATOMIC_STORE_EXCLUSIVE_FUNCTION(StoreExclusive, "stxr")
|
|
AMS_UTIL_IMPL_DEFINE_ATOMIC_STORE_EXCLUSIVE_FUNCTION(StoreReleaseExclusive, "stlxr")
|
|
|
|
#undef AMS_UTIL_IMPL_DEFINE_ATOMIC_STORE_EXCLUSIVE_FUNCTION
|
|
|
|
template<UsableAtomicType T>
|
|
constexpr ALWAYS_INLINE T ConvertToTypeForAtomic(AtomicStorage<T> s) {
|
|
if constexpr (std::integral<T>) {
|
|
return static_cast<T>(s);
|
|
} else if constexpr(std::is_pointer<T>::value) {
|
|
return reinterpret_cast<T>(s);
|
|
} else {
|
|
return std::bit_cast<T>(s);
|
|
}
|
|
}
|
|
|
|
template<UsableAtomicType T>
|
|
constexpr ALWAYS_INLINE AtomicStorage<T> ConvertToStorageForAtomic(T arg) {
|
|
if constexpr (std::integral<T>) {
|
|
return static_cast<AtomicStorage<T>>(arg);
|
|
} else if constexpr(std::is_pointer<T>::value) {
|
|
if (std::is_constant_evaluated() && arg == nullptr) {
|
|
return 0;
|
|
}
|
|
|
|
return reinterpret_cast<AtomicStorage<T>>(arg);
|
|
} else {
|
|
return std::bit_cast<AtomicStorage<T>>(arg);
|
|
}
|
|
}
|
|
|
|
template<std::memory_order Order, std::unsigned_integral StorageType>
|
|
ALWAYS_INLINE StorageType AtomicLoadImpl(volatile StorageType * const p) {
|
|
if constexpr (Order != std::memory_order_relaxed) {
|
|
return ::ams::util::impl::LoadAcquireForAtomic(p);
|
|
} else {
|
|
return *p;
|
|
}
|
|
}
|
|
|
|
template<std::memory_order Order, std::unsigned_integral StorageType>
|
|
ALWAYS_INLINE void AtomicStoreImpl(volatile StorageType * const p, const StorageType s) {
|
|
if constexpr (Order != std::memory_order_relaxed) {
|
|
::ams::util::impl::StoreReleaseForAtomic(p, s);
|
|
} else {
|
|
*p = s;
|
|
}
|
|
}
|
|
|
|
template<std::memory_order Order, std::unsigned_integral StorageType>
|
|
ALWAYS_INLINE StorageType LoadExclusiveForAtomicByMemoryOrder(volatile StorageType * const p) {
|
|
if constexpr (Order == std::memory_order_relaxed) {
|
|
return ::ams::util::impl::LoadExclusiveForAtomic(p);
|
|
} else if constexpr (Order == std::memory_order_consume || Order == std::memory_order_acquire) {
|
|
return ::ams::util::impl::LoadAcquireExclusiveForAtomic(p);
|
|
} else if constexpr (Order == std::memory_order_release) {
|
|
return ::ams::util::impl::LoadExclusiveForAtomic(p);
|
|
} else if constexpr (Order == std::memory_order_acq_rel || Order == std::memory_order_seq_cst) {
|
|
return ::ams::util::impl::LoadAcquireExclusiveForAtomic(p);
|
|
} else {
|
|
static_assert(Order != Order, "Invalid memory order");
|
|
}
|
|
}
|
|
|
|
template<std::memory_order Order, std::unsigned_integral StorageType>
|
|
ALWAYS_INLINE bool StoreExclusiveForAtomicByMemoryOrder(volatile StorageType * const p, const StorageType s) {
|
|
if constexpr (Order == std::memory_order_relaxed) {
|
|
return ::ams::util::impl::StoreExclusiveForAtomic(p, s);
|
|
} else if constexpr (Order == std::memory_order_consume || Order == std::memory_order_acquire) {
|
|
return ::ams::util::impl::StoreExclusiveForAtomic(p, s);
|
|
} else if constexpr (Order == std::memory_order_release) {
|
|
return ::ams::util::impl::StoreReleaseExclusiveForAtomic(p, s);
|
|
} else if constexpr (Order == std::memory_order_acq_rel || Order == std::memory_order_seq_cst) {
|
|
return ::ams::util::impl::StoreReleaseExclusiveForAtomic(p, s);
|
|
} else {
|
|
static_assert(Order != Order, "Invalid memory order");
|
|
}
|
|
}
|
|
|
|
template<std::memory_order Order, std::unsigned_integral StorageType>
|
|
ALWAYS_INLINE StorageType AtomicExchangeImpl(volatile StorageType * const p, const StorageType s) {
|
|
StorageType current;
|
|
do {
|
|
current = ::ams::util::impl::LoadExclusiveForAtomicByMemoryOrder<Order>(p);
|
|
} while(AMS_UNLIKELY(!impl::StoreExclusiveForAtomicByMemoryOrder<Order>(p, s)));
|
|
|
|
return current;
|
|
}
|
|
|
|
template<std::memory_order Order, UsableAtomicType T>
|
|
ALWAYS_INLINE bool AtomicCompareExchangeWeakImpl(volatile AtomicStorage<T> * const p, T &expected, T desired) {
|
|
const AtomicStorage<T> e = ::ams::util::impl::ConvertToStorageForAtomic(expected);
|
|
const AtomicStorage<T> d = ::ams::util::impl::ConvertToStorageForAtomic(desired);
|
|
|
|
const AtomicStorage<T> current = ::ams::util::impl::LoadExclusiveForAtomicByMemoryOrder<Order>(p);
|
|
if (AMS_UNLIKELY(current != e)) {
|
|
impl::ClearExclusiveForAtomic();
|
|
expected = ::ams::util::impl::ConvertToTypeForAtomic<T>(current);
|
|
return false;
|
|
}
|
|
|
|
return AMS_LIKELY(impl::StoreExclusiveForAtomicByMemoryOrder<Order>(p, d));
|
|
}
|
|
|
|
template<std::memory_order Order, UsableAtomicType T>
|
|
ALWAYS_INLINE bool AtomicCompareExchangeStrongImpl(volatile AtomicStorage<T> * const p, T &expected, T desired) {
|
|
const AtomicStorage<T> e = ::ams::util::impl::ConvertToStorageForAtomic(expected);
|
|
const AtomicStorage<T> d = ::ams::util::impl::ConvertToStorageForAtomic(desired);
|
|
|
|
do {
|
|
if (const AtomicStorage<T> current = ::ams::util::impl::LoadExclusiveForAtomicByMemoryOrder<Order>(p); AMS_UNLIKELY(current != e)) {
|
|
impl::ClearExclusiveForAtomic();
|
|
expected = ::ams::util::impl::ConvertToTypeForAtomic<T>(current);
|
|
return false;
|
|
}
|
|
} while (AMS_UNLIKELY(!impl::StoreExclusiveForAtomicByMemoryOrder<Order>(p, d)));
|
|
|
|
return true;
|
|
}
|
|
|
|
}
|
|
|
|
template<impl::UsableAtomicType T>
|
|
class Atomic {
|
|
NON_COPYABLE(Atomic);
|
|
NON_MOVEABLE(Atomic);
|
|
private:
|
|
using StorageType = impl::AtomicStorage<T>;
|
|
|
|
static constexpr bool IsIntegral = std::integral<T>;
|
|
static constexpr bool IsPointer = std::is_pointer<T>::value;
|
|
|
|
static constexpr bool HasArithmeticFunctions = IsIntegral || IsPointer;
|
|
|
|
using DifferenceType = typename std::conditional<IsIntegral, T, typename std::conditional<IsPointer, std::ptrdiff_t, void>::type>::type;
|
|
|
|
static constexpr ALWAYS_INLINE T ConvertToType(StorageType s) {
|
|
return impl::ConvertToTypeForAtomic<T>(s);
|
|
}
|
|
|
|
static constexpr ALWAYS_INLINE StorageType ConvertToStorage(T arg) {
|
|
return impl::ConvertToStorageForAtomic<T>(arg);
|
|
}
|
|
private:
|
|
StorageType m_v;
|
|
private:
|
|
ALWAYS_INLINE volatile StorageType *GetStoragePointer() { return reinterpret_cast< volatile StorageType *>(std::addressof(m_v)); }
|
|
ALWAYS_INLINE const volatile StorageType *GetStoragePointer() const { return reinterpret_cast<const volatile StorageType *>(std::addressof(m_v)); }
|
|
public:
|
|
ALWAYS_INLINE Atomic() { /* ... */ }
|
|
constexpr ALWAYS_INLINE Atomic(T v) : m_v(ConvertToStorage(v)) { /* ... */ }
|
|
|
|
constexpr ALWAYS_INLINE T operator=(T desired) {
|
|
if (std::is_constant_evaluated()) {
|
|
m_v = ConvertToStorage(desired);
|
|
} else {
|
|
this->Store(desired);
|
|
}
|
|
return desired;
|
|
}
|
|
|
|
ALWAYS_INLINE operator T() const { return this->Load(); }
|
|
|
|
template<std::memory_order Order = std::memory_order_seq_cst>
|
|
ALWAYS_INLINE T Load() const {
|
|
return ConvertToType(impl::AtomicLoadImpl<Order>(this->GetStoragePointer()));
|
|
}
|
|
|
|
template<std::memory_order Order = std::memory_order_seq_cst>
|
|
ALWAYS_INLINE void Store(T arg) {
|
|
return impl::AtomicStoreImpl<Order>(this->GetStoragePointer(), ConvertToStorage(arg));
|
|
}
|
|
|
|
template<std::memory_order Order = std::memory_order_seq_cst>
|
|
ALWAYS_INLINE T Exchange(T arg) {
|
|
return ConvertToType(impl::AtomicExchangeImpl<Order>(this->GetStoragePointer(), ConvertToStorage(arg)));
|
|
}
|
|
|
|
template<std::memory_order Order = std::memory_order_seq_cst>
|
|
ALWAYS_INLINE bool CompareExchangeWeak(T &expected, T desired) {
|
|
return impl::AtomicCompareExchangeWeakImpl<Order, T>(this->GetStoragePointer(), expected, desired);
|
|
}
|
|
|
|
template<std::memory_order Order = std::memory_order_seq_cst>
|
|
ALWAYS_INLINE bool CompareExchangeStrong(T &expected, T desired) {
|
|
return impl::AtomicCompareExchangeStrongImpl<Order, T>(this->GetStoragePointer(), expected, desired);
|
|
}
|
|
|
|
#define AMS_UTIL_IMPL_DEFINE_ATOMIC_FETCH_OPERATE_FUNCTION(_OPERATION_, _OPERATOR_, _POINTER_ALLOWED_) \
|
|
template<bool Enable = (IsIntegral || (_POINTER_ALLOWED_ && IsPointer)), typename = typename std::enable_if<Enable, void>::type> \
|
|
ALWAYS_INLINE T Fetch ## _OPERATION_(DifferenceType arg) { \
|
|
static_assert(Enable == (IsIntegral || (_POINTER_ALLOWED_ && IsPointer))); \
|
|
volatile StorageType * const p = this->GetStoragePointer(); \
|
|
\
|
|
StorageType current; \
|
|
do { \
|
|
current = impl::LoadAcquireExclusiveForAtomic<StorageType>(p); \
|
|
} while (AMS_UNLIKELY(!impl::StoreReleaseExclusiveForAtomic<StorageType>(p, ConvertToStorage(ConvertToType(current) _OPERATOR_ arg)))); \
|
|
return ConvertToType(current); \
|
|
} \
|
|
\
|
|
template<bool Enable = (IsIntegral || (_POINTER_ALLOWED_ && IsPointer)), typename = typename std::enable_if<Enable, void>::type> \
|
|
ALWAYS_INLINE T operator _OPERATOR_##=(DifferenceType arg) { \
|
|
static_assert(Enable == (IsIntegral || (_POINTER_ALLOWED_ && IsPointer))); \
|
|
return this->Fetch ## _OPERATION_(arg) _OPERATOR_ arg; \
|
|
}
|
|
|
|
AMS_UTIL_IMPL_DEFINE_ATOMIC_FETCH_OPERATE_FUNCTION(Add, +, true)
|
|
AMS_UTIL_IMPL_DEFINE_ATOMIC_FETCH_OPERATE_FUNCTION(Sub, -, true)
|
|
AMS_UTIL_IMPL_DEFINE_ATOMIC_FETCH_OPERATE_FUNCTION(And, &, false)
|
|
AMS_UTIL_IMPL_DEFINE_ATOMIC_FETCH_OPERATE_FUNCTION(Or, |, false)
|
|
AMS_UTIL_IMPL_DEFINE_ATOMIC_FETCH_OPERATE_FUNCTION(Xor, ^, false)
|
|
|
|
#undef AMS_UTIL_IMPL_DEFINE_ATOMIC_FETCH_OPERATE_FUNCTION
|
|
|
|
template<bool Enable = HasArithmeticFunctions, typename = typename std::enable_if<Enable, void>::type>
|
|
ALWAYS_INLINE T operator++() { static_assert(Enable == HasArithmeticFunctions); return this->FetchAdd(1) + 1; }
|
|
|
|
template<bool Enable = HasArithmeticFunctions, typename = typename std::enable_if<Enable, void>::type>
|
|
ALWAYS_INLINE T operator++(int) { static_assert(Enable == HasArithmeticFunctions); return this->FetchAdd(1); }
|
|
|
|
template<bool Enable = HasArithmeticFunctions, typename = typename std::enable_if<Enable, void>::type>
|
|
ALWAYS_INLINE T operator--() { static_assert(Enable == HasArithmeticFunctions); return this->FetchSub(1) - 1; }
|
|
|
|
template<bool Enable = HasArithmeticFunctions, typename = typename std::enable_if<Enable, void>::type>
|
|
ALWAYS_INLINE T operator--(int) { static_assert(Enable == HasArithmeticFunctions); return this->FetchSub(1); }
|
|
};
|
|
|
|
template<impl::UsableAtomicType T>
|
|
class AtomicRef {
|
|
NON_MOVEABLE(AtomicRef);
|
|
public:
|
|
static constexpr size_t RequiredAlignment = std::max<size_t>(sizeof(T), alignof(T));
|
|
private:
|
|
using StorageType = impl::AtomicStorage<T>;
|
|
static_assert(sizeof(StorageType) == sizeof(T));
|
|
static_assert(alignof(StorageType) >= alignof(T));
|
|
|
|
static constexpr bool IsIntegral = std::integral<T>;
|
|
static constexpr bool IsPointer = std::is_pointer<T>::value;
|
|
|
|
static constexpr bool HasArithmeticFunctions = IsIntegral || IsPointer;
|
|
|
|
using DifferenceType = typename std::conditional<IsIntegral, T, typename std::conditional<IsPointer, std::ptrdiff_t, void>::type>::type;
|
|
|
|
static constexpr ALWAYS_INLINE T ConvertToType(StorageType s) {
|
|
return impl::ConvertToTypeForAtomic<T>(s);
|
|
}
|
|
|
|
static constexpr ALWAYS_INLINE StorageType ConvertToStorage(T arg) {
|
|
return impl::ConvertToStorageForAtomic<T>(arg);
|
|
}
|
|
private:
|
|
volatile StorageType * const m_p;
|
|
private:
|
|
ALWAYS_INLINE volatile StorageType *GetStoragePointer() const { return m_p; }
|
|
public:
|
|
explicit ALWAYS_INLINE AtomicRef(T &t) : m_p(reinterpret_cast<volatile StorageType *>(std::addressof(t))) { /* ... */ }
|
|
ALWAYS_INLINE AtomicRef(const AtomicRef &) noexcept = default;
|
|
|
|
AtomicRef() = delete;
|
|
AtomicRef &operator=(const AtomicRef &) = delete;
|
|
|
|
ALWAYS_INLINE T operator=(T desired) const { return const_cast<AtomicRef *>(this)->Store(desired); }
|
|
|
|
ALWAYS_INLINE operator T() const { return this->Load(); }
|
|
|
|
template<std::memory_order Order = std::memory_order_seq_cst>
|
|
ALWAYS_INLINE T Load() const {
|
|
return ConvertToType(impl::AtomicLoadImpl<Order>(this->GetStoragePointer()));
|
|
}
|
|
|
|
template<std::memory_order Order = std::memory_order_seq_cst>
|
|
ALWAYS_INLINE void Store(T arg) const {
|
|
return impl::AtomicStoreImpl<Order>(this->GetStoragePointer(), ConvertToStorage(arg));
|
|
}
|
|
|
|
template<std::memory_order Order = std::memory_order_seq_cst>
|
|
ALWAYS_INLINE T Exchange(T arg) const {
|
|
return ConvertToType(impl::AtomicExchangeImpl<Order>(this->GetStoragePointer(), ConvertToStorage(arg)));
|
|
}
|
|
|
|
template<std::memory_order Order = std::memory_order_seq_cst>
|
|
ALWAYS_INLINE bool CompareExchangeWeak(T &expected, T desired) const {
|
|
return impl::AtomicCompareExchangeWeakImpl<Order, T>(this->GetStoragePointer(), expected, desired);
|
|
}
|
|
|
|
template<std::memory_order Order = std::memory_order_seq_cst>
|
|
ALWAYS_INLINE bool CompareExchangeStrong(T &expected, T desired) const {
|
|
return impl::AtomicCompareExchangeStrongImpl<Order, T>(this->GetStoragePointer(), expected, desired);
|
|
}
|
|
|
|
#define AMS_UTIL_IMPL_DEFINE_ATOMIC_FETCH_OPERATE_FUNCTION(_OPERATION_, _OPERATOR_, _POINTER_ALLOWED_) \
|
|
template<bool Enable = (IsIntegral || (_POINTER_ALLOWED_ && IsPointer)), typename = typename std::enable_if<Enable, void>::type> \
|
|
ALWAYS_INLINE T Fetch ## _OPERATION_(DifferenceType arg) const { \
|
|
static_assert(Enable == (IsIntegral || (_POINTER_ALLOWED_ && IsPointer))); \
|
|
volatile StorageType * const p = this->GetStoragePointer(); \
|
|
\
|
|
StorageType current; \
|
|
do { \
|
|
current = impl::LoadAcquireExclusiveForAtomic<StorageType>(p); \
|
|
} while (AMS_UNLIKELY(!impl::StoreReleaseExclusiveForAtomic<StorageType>(p, ConvertToStorage(ConvertToType(current) _OPERATOR_ arg)))); \
|
|
return ConvertToType(current); \
|
|
} \
|
|
\
|
|
template<bool Enable = (IsIntegral || (_POINTER_ALLOWED_ && IsPointer)), typename = typename std::enable_if<Enable, void>::type> \
|
|
ALWAYS_INLINE T operator _OPERATOR_##=(DifferenceType arg) const { \
|
|
static_assert(Enable == (IsIntegral || (_POINTER_ALLOWED_ && IsPointer))); \
|
|
return this->Fetch ## _OPERATION_(arg) _OPERATOR_ arg; \
|
|
}
|
|
|
|
AMS_UTIL_IMPL_DEFINE_ATOMIC_FETCH_OPERATE_FUNCTION(Add, +, true)
|
|
AMS_UTIL_IMPL_DEFINE_ATOMIC_FETCH_OPERATE_FUNCTION(Sub, -, true)
|
|
AMS_UTIL_IMPL_DEFINE_ATOMIC_FETCH_OPERATE_FUNCTION(And, &, false)
|
|
AMS_UTIL_IMPL_DEFINE_ATOMIC_FETCH_OPERATE_FUNCTION(Or, |, false)
|
|
AMS_UTIL_IMPL_DEFINE_ATOMIC_FETCH_OPERATE_FUNCTION(Xor, ^, false)
|
|
|
|
#undef AMS_UTIL_IMPL_DEFINE_ATOMIC_FETCH_OPERATE_FUNCTION
|
|
|
|
template<bool Enable = HasArithmeticFunctions, typename = typename std::enable_if<Enable, void>::type>
|
|
ALWAYS_INLINE T operator++() const { static_assert(Enable == HasArithmeticFunctions); return this->FetchAdd(1) + 1; }
|
|
|
|
template<bool Enable = HasArithmeticFunctions, typename = typename std::enable_if<Enable, void>::type>
|
|
ALWAYS_INLINE T operator++(int) const { static_assert(Enable == HasArithmeticFunctions); return this->FetchAdd(1); }
|
|
|
|
template<bool Enable = HasArithmeticFunctions, typename = typename std::enable_if<Enable, void>::type>
|
|
ALWAYS_INLINE T operator--() const { static_assert(Enable == HasArithmeticFunctions); return this->FetchSub(1) - 1; }
|
|
|
|
template<bool Enable = HasArithmeticFunctions, typename = typename std::enable_if<Enable, void>::type>
|
|
ALWAYS_INLINE T operator--(int) const { static_assert(Enable == HasArithmeticFunctions); return this->FetchSub(1); }
|
|
};
|
|
|
|
} |