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kern: use new AtomicRef, use Atomic<bool>

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This commit is contained in:
Michael Scire
2021-10-20 13:29:38 -07:00
parent aed9d3f535
commit 20716cb3de
7 changed files with 334 additions and 160 deletions
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93
libraries/libvapours/include/vapours/util/arch/generic/util_atomic.hpp
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@@ -74,6 +74,8 @@ namespace ams::util {
return (m_v = 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 m_v.load(Order);
@@ -84,22 +86,21 @@ namespace ams::util {
return m_v.store(Order);
}
template<std::memory_order Order>
template<std::memory_order Order = std::memory_order_seq_cst>
ALWAYS_INLINE T Exchange(T arg) {
return m_v.exchange(arg, Order);
}
template<std::memory_order Order>
template<std::memory_order Order = std::memory_order_seq_cst>
ALWAYS_INLINE bool CompareExchangeWeak(T &expected, T desired) {
return m_v.compare_exchange_weak(expected, desired, Order);
}
template<std::memory_order Order>
template<std::memory_order Order = std::memory_order_seq_cst>
ALWAYS_INLINE bool CompareExchangeStrong(T &expected, T desired) {
return m_v.compare_exchange_strong(expected, desired, Order);
}
#define AMS_UTIL_IMPL_DEFINE_ATOMIC_FETCH_OPERATE_FUNCTION(_OPERATION_, _OPERATION_LOWER_, _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) { \
@@ -134,5 +135,89 @@ namespace ams::util {
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::atomic_ref<T>::required_alignment;
private:
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;
private:
static_assert(std::atomic_ref<T>::is_always_lock_free);
private:
std::atomic_ref<T> m_ref;
public:
explicit ALWAYS_INLINE AtomicRef(T &t) : m_ref(t) { /* ... */ }
ALWAYS_INLINE AtomicRef(const AtomicRef &) noexcept = default;
AtomicRef() = delete;
AtomicRef &operator=(const AtomicRef &) = delete;
ALWAYS_INLINE T operator=(T desired) const { return (m_ref = desired); }
template<std::memory_order Order = std::memory_order_seq_cst>
ALWAYS_INLINE T Load() const {
return m_ref.load(Order);
}
template<std::memory_order Order = std::memory_order_seq_cst>
ALWAYS_INLINE void Store(T arg) const {
return m_ref.store(arg, Order);
}
template<std::memory_order Order = std::memory_order_seq_cst>
ALWAYS_INLINE T Exchange(T arg) const {
return m_ref.exchange(arg, Order);
}
template<std::memory_order Order = std::memory_order_seq_cst>
ALWAYS_INLINE bool CompareExchangeWeak(T &expected, T desired) const {
return m_ref.compare_exchange_weak(expected, desired, Order);
}
template<std::memory_order Order = std::memory_order_seq_cst>
ALWAYS_INLINE bool CompareExchangeStrong(T &expected, T desired) const {
return m_ref.compare_exchange_strong(expected, desired, Order);
}
#define AMS_UTIL_IMPL_DEFINE_ATOMIC_FETCH_OPERATE_FUNCTION(_OPERATION_, _OPERATION_LOWER_, _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))); \
return m_ref.fetch_##_OPERATION_LOWER_(arg); \
} \
\
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, add, +, true)
AMS_UTIL_IMPL_DEFINE_ATOMIC_FETCH_OPERATE_FUNCTION(Sub, sub, -, true)
AMS_UTIL_IMPL_DEFINE_ATOMIC_FETCH_OPERATE_FUNCTION(And, and, &, false)
AMS_UTIL_IMPL_DEFINE_ATOMIC_FETCH_OPERATE_FUNCTION(Or, or, |, false)
AMS_UTIL_IMPL_DEFINE_ATOMIC_FETCH_OPERATE_FUNCTION(Xor, 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); }
};
}