699 lines
18 KiB
C++
699 lines
18 KiB
C++
/***
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Copyright (C) 2022 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: auAtomic.hpp
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Date: 2022-2-1
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Author: Reece
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***/
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#pragma once
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#if defined(AURORA_COMPILER_CLANG)
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#include <stdatomic.h>
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#endif
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template <class T>
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struct AuAtomicUtils
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{
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/**
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* @brief Generic bitwise (1 << offset)
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* @return original value
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* @warning T is bound by platform and compiler constraints
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*/
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static T Set(T *in, AuUInt8 offset);
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/**
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* @brief
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* @param in
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* @param orValue
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* @return original value
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*/
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static T Or(T *in, T orValue);
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/**
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* @brief
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* @param in
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* @param andValue
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* @return original value
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*/
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static T And(T *in, T andValue);
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/**
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* @brief Adds addend to in
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* @return updated value
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* @warning T is bound by platform and compiler constraints
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*/
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static T Add(T *in, T addend);
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/**
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* @brief Subtracts the minuend from in
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* @return updated value
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* @warning T is bound by platform and compiler constraints
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*/
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static T Sub(T *in, T minuend);
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/**
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* @brief Generic compare exchange
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* @param replace replacement value for in if in matches compare
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* @param compare required reference value
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* @return original value
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* @warning T is bound by platform and compiler constraints
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*/
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static T CompareExchange(T *in, T replace, T compare);
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/**
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* @brief { return *in & (1 << offset); in |= (1 << offset) }
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* @param in
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* @param offset Bit index
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* @return *in & (1 << offset)
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* @warning T is bound by platform and compiler constraints
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*/
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static bool TestAndSet(T *in, const AuUInt8 offset);
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//
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static T Load(T *in);
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//
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static void Store(T *in, T value);
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//
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static void ClearU8Lock(T *in);
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};
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#if defined(AURORA_COMPILER_MSVC)
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template <>
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inline auline AuUInt64 AuAtomicUtils<AuUInt64>::CompareExchange(AuUInt64 *in, AuUInt64 replace, AuUInt64 compare)
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{
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return static_cast<AuUInt64>(_InterlockedCompareExchange64(reinterpret_cast<long long volatile *>(in), static_cast<long long>(replace), static_cast<long long>(compare)));
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}
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template <>
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inline auline AuUInt32 AuAtomicUtils<AuUInt32>::CompareExchange(AuUInt32 *in, AuUInt32 replace, AuUInt32 compare)
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{
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return static_cast<AuUInt32>(_InterlockedCompareExchange(reinterpret_cast<long volatile *>(in), static_cast<long>(replace), static_cast<long>(compare)));
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}
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template <>
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inline auline AuUInt16 AuAtomicUtils<AuUInt16>::CompareExchange(AuUInt16 *in, AuUInt16 replace, AuUInt16 compare)
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{
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return static_cast<AuUInt16>(_InterlockedCompareExchange16(reinterpret_cast<short volatile *>(in), static_cast<short>(replace), static_cast<short>(compare)));
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}
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template <>
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inline auline AuInt64 AuAtomicUtils<AuInt64>::CompareExchange(AuInt64 *in, AuInt64 replace, AuInt64 compare)
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{
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return _InterlockedCompareExchange64(reinterpret_cast<long long volatile *>(in), static_cast<long long>(replace), static_cast<long long>(compare));
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}
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template <>
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inline auline AuInt32 AuAtomicUtils<AuInt32>::CompareExchange(AuInt32 *in, AuInt32 replace, AuInt32 compare)
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{
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return _InterlockedCompareExchange(reinterpret_cast<long volatile *>(in), static_cast<long>(replace), static_cast<long>(compare));
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}
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template <>
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inline auline AuInt16 AuAtomicUtils<AuInt16>::CompareExchange(AuInt16 *in, AuInt16 replace, AuInt16 compare)
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{
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return _InterlockedCompareExchange16(reinterpret_cast<short volatile *>(in), static_cast<short>(replace), static_cast<short>(compare));
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}
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#if !defined(AURORA_IS_32BIT)
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template <>
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inline auline AuUInt64 AuAtomicUtils<AuUInt64>::Add(AuUInt64 *in, AuUInt64 addend)
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{
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return static_cast<AuUInt64>(_InterlockedExchangeAdd64(reinterpret_cast<long long volatile *>(in), static_cast<long long>(addend)) + static_cast<long long>(addend));
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}
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#endif
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template <>
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inline auline AuUInt32 AuAtomicUtils<AuUInt32>::Add(AuUInt32 *in, AuUInt32 addend)
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{
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return static_cast<AuUInt32>(_InterlockedExchangeAdd(reinterpret_cast<long volatile *>(in), static_cast<long>(addend)) + static_cast<long>(addend));
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}
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#if !defined(AURORA_IS_32BIT)
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template <>
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inline auline AuInt64 AuAtomicUtils<AuInt64>::Add(AuInt64 *in, AuInt64 addend)
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{
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return _InterlockedExchangeAdd64(reinterpret_cast<long long volatile *>(in), static_cast<long long>(addend)) + static_cast<long long>(addend);
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}
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#endif
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template <>
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inline auline AuInt32 AuAtomicUtils<AuInt32>::Add(AuInt32 *in, AuInt32 addend)
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{
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return _InterlockedExchangeAdd(reinterpret_cast<long volatile *>(in), static_cast<long>(addend)) + static_cast<long>(addend);
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}
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// TODO:
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#if 0
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template <>
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inline auline AuUInt16 AuAtomicUtils<AuUInt16>::Add(AuUInt16 *in, AuUInt16 addend)
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{
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return {};
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}
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#endif
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template <>
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inline auline AuUInt64 AuAtomicUtils<AuUInt64>::Sub(AuUInt64 *in, AuUInt64 minuend)
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{
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return Add(in, AuUInt64(0) - minuend);
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}
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template <>
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inline auline AuUInt32 AuAtomicUtils<AuUInt32>::Sub(AuUInt32 *in, AuUInt32 minuend)
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{
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return Add(in, AuUInt32(0) - minuend);
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}
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template <>
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inline auline AuInt64 AuAtomicUtils<AuInt64>::Sub(AuInt64 *in, AuInt64 minuend)
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{
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return Add(in, AuInt64(0) - minuend);
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}
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template <>
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inline auline AuInt32 AuAtomicUtils<AuInt32>::Sub(AuInt32 *in, AuInt32 minuend)
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{
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return Add(in, AuInt32(0) - minuend);
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}
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// TODO:
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#if 0
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template <>
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inline auline AuUInt16 AuAtomicUtils<AuUInt16>::Sub(AuUInt16 *in, AuUInt16 minuend)
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{
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return {};
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}
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#endif
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#if !defined(AURORA_IS_32BIT)
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template <>
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inline auline AuUInt64 AuAtomicUtils<AuUInt64>::Or(AuUInt64 *in, AuUInt64 orValue)
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{
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return _InterlockedOr64(reinterpret_cast<long long volatile *>(in), orValue);
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}
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#endif
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template <>
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inline auline AuUInt32 AuAtomicUtils<AuUInt32>::Or(AuUInt32 *in, AuUInt32 orValue)
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{
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return _InterlockedOr(reinterpret_cast<long volatile *>(in), orValue);
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}
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template <>
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inline auline AuUInt16 AuAtomicUtils<AuUInt16>::Or(AuUInt16 *in, AuUInt16 orValue)
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{
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return _InterlockedOr16(reinterpret_cast<short volatile *>(in), orValue);
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}
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#if !defined(AURORA_IS_32BIT)
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template <>
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inline auline AuInt64 AuAtomicUtils<AuInt64>::Or(AuInt64 *in, AuInt64 orValue)
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{
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return _InterlockedOr64(reinterpret_cast<long long volatile *>(in), orValue);
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}
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#endif
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template <>
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inline auline AuInt32 AuAtomicUtils<AuInt32>::Or(AuInt32 *in, AuInt32 orValue)
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{
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return _InterlockedOr(reinterpret_cast<long volatile *>(in), orValue);
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}
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template <>
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inline auline long AuAtomicUtils<long>::Or(long *in, long orValue)
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{
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return _InterlockedOr(reinterpret_cast<long volatile *>(in), orValue);
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}
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template <>
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inline auline unsigned long AuAtomicUtils<unsigned long>::Or(unsigned long *in, unsigned long orValue)
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{
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return _InterlockedOr(reinterpret_cast<long volatile *>(in), orValue);
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}
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template <>
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inline auline AuInt16 AuAtomicUtils<AuInt16>::Or(AuInt16 *in, AuInt16 orValue)
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{
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return _InterlockedOr16(reinterpret_cast<short volatile *>(in), orValue);
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}
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template <class T>
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inline auline T AuAtomicUtils<T>::Set(T *in, AuUInt8 offset)
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{
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return AuAtomicUtils<T>::Or(in, T(1) << offset);
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}
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#if !defined(AURORA_IS_32BIT)
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template <>
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inline auline AuUInt64 AuAtomicUtils<AuUInt64>::And(AuUInt64 *in, AuUInt64 AndValue)
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{
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return _InterlockedAnd64(reinterpret_cast<long long volatile *>(in), AndValue);
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}
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#endif
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template <>
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inline auline AuUInt32 AuAtomicUtils<AuUInt32>::And(AuUInt32 *in, AuUInt32 AndValue)
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{
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return _InterlockedAnd(reinterpret_cast<long volatile *>(in), AndValue);
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}
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template <>
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inline auline AuUInt16 AuAtomicUtils<AuUInt16>::And(AuUInt16 *in, AuUInt16 AndValue)
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{
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return _InterlockedAnd16(reinterpret_cast<short volatile *>(in), AndValue);
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}
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#if !defined(AURORA_IS_32BIT)
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template <>
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inline auline AuInt64 AuAtomicUtils<AuInt64>::And(AuInt64 *in, AuInt64 AndValue)
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{
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return _InterlockedAnd64(reinterpret_cast<long long volatile *>(in), AndValue);
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}
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#endif
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template <>
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inline auline AuInt32 AuAtomicUtils<AuInt32>::And(AuInt32 *in, AuInt32 AndValue)
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{
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return _InterlockedAnd(reinterpret_cast<long volatile *>(in), AndValue);
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}
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template <>
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inline auline long AuAtomicUtils<long>::And(long *in, long AndValue)
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{
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return _InterlockedAnd(reinterpret_cast<long volatile *>(in), AndValue);
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}
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template <>
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inline auline unsigned long AuAtomicUtils<unsigned long>::And(unsigned long *in, unsigned long AndValue)
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{
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return _InterlockedAnd(reinterpret_cast<long volatile *>(in), AndValue);
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}
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template <>
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inline auline AuInt16 AuAtomicUtils<AuInt16>::And(AuInt16 *in, AuInt16 AndValue)
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{
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return _InterlockedAnd16(reinterpret_cast<short volatile *>(in), AndValue);
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}
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#elif defined(AURORA_COMPILER_CLANG) || defined(AURORA_COMPILER_GCC)
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template <class T>
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inline auline T AuAtomicUtils<T>::CompareExchange(T *in, T replace, T compare)
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{
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return __sync_val_compare_and_swap(in, compare, replace);
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}
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template <class T>
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inline auline T AuAtomicUtils<T>::Add(T *in, T addend)
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{
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return __sync_add_and_fetch(in, addend);
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}
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template <class T>
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inline auline T AuAtomicUtils<T>::Sub(T *in, T minuend)
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{
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return __sync_sub_and_fetch(in, minuend);
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}
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template <class T>
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inline auline T AuAtomicUtils<T>::Set(T *in, AuUInt8 offset)
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{
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return __sync_fetch_and_or(in, T(1) << offset);
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}
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template <class T>
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inline auline T AuAtomicUtils<T>::Or(T *in, T value)
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{
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return __sync_fetch_and_or(in, value);
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}
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template <class T>
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inline auline T AuAtomicUtils<T>::And(T *in, T value)
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{
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return __sync_fetch_and_and(in, value);
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}
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#endif
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#if defined(AURORA_COMPILER_CLANG)
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#define ATOMIC_PREFIX_HAX(name) __c11_ ## name
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#else
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#define ATOMIC_PREFIX_HAX(name) __ ## name ## _explicit
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#endif
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template <class T>
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inline auline T AuAtomicUtils<T>::Load(T *in)
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{
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#if defined(AURORA_COMPILER_MSVC) && (defined(AURORA_ARCH_X64) || defined(AURORA_ARCH_X86))
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::_ReadWriteBarrier(); // compile-time only! we use this to prevent optimizations. x86/64 does not care so long as we're aligned.
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return *in;
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#elif defined(AURORA_COMPILER_MSVC)
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::MemoryBarrier(); // works on all legacy MSVC targets including AMD64, IA64, and POWER
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return *in;
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#else
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#if defined(AURORA_COMPILER_CLANG)
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#if !(defined(AURORA_ARCH_X64) || defined(AURORA_ARCH_X86))
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__sync_synchronize(); // brute force on unknown archs. gcc-like compilers will accept this
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#endif
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if constexpr (AuIsSame_v<AuUInt8, T>)
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{
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return ATOMIC_PREFIX_HAX(atomic_load)((atomic_uint_fast8_t *)in, __ATOMIC_ACQUIRE);
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}
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else if constexpr (AuIsSame_v<AuInt8, T>)
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{
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return ATOMIC_PREFIX_HAX(atomic_load)((atomic_int_fast8_t *)in, __ATOMIC_ACQUIRE);
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}
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else if constexpr (AuIsSame_v<AuUInt16, T>)
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{
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return ATOMIC_PREFIX_HAX(atomic_load)((atomic_uint_fast16_t *)in, __ATOMIC_ACQUIRE);
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}
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else if constexpr (AuIsSame_v<AuInt16, T>)
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{
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return ATOMIC_PREFIX_HAX(atomic_load)((atomic_int_fast16_t *)in, __ATOMIC_ACQUIRE);
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}
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else if constexpr (AuIsSame_v<AuUInt32, T>)
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{
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return ATOMIC_PREFIX_HAX(atomic_load)((atomic_uint_fast32_t *)in, __ATOMIC_ACQUIRE);
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}
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else if constexpr (AuIsSame_v<AuInt32, T>)
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{
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return ATOMIC_PREFIX_HAX(atomic_load)((atomic_int_fast32_t *)in, __ATOMIC_ACQUIRE);
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}
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else
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{
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static_assert(AuIsVoid_v<T>, "T");
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}
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#else
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return __sync_val_compare_and_swap(*in, 0, 0);
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#endif
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#endif
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}
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template <class T>
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inline auline void AuAtomicUtils<T>::Store(T *in, T val)
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{
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#if defined(AURORA_COMPILER_MSVC) && (defined(AURORA_ARCH_X64) || defined(AURORA_ARCH_X86))
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*in = val;
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#elif defined(AURORA_COMPILER_MSVC)
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*in = val;
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::MemoryBarrier();
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#else
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if constexpr (AuIsSame_v<AuUInt8, T>)
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{
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ATOMIC_PREFIX_HAX(atomic_store)((atomic_uint_fast8_t *)in, val, __ATOMIC_RELEASE);
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}
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else if constexpr (AuIsSame_v<AuInt8, T>)
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{
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ATOMIC_PREFIX_HAX(atomic_store)((atomic_int_fast8_t *)in, val, __ATOMIC_RELEASE);
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}
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else if constexpr (AuIsSame_v<AuUInt16, T>)
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{
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ATOMIC_PREFIX_HAX(atomic_store)((atomic_uint_fast16_t *)in, val, __ATOMIC_RELEASE);
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}
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else if constexpr (AuIsSame_v<AuInt16, T>)
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{
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ATOMIC_PREFIX_HAX(atomic_store)((atomic_int_fast16_t *)in, val, __ATOMIC_RELEASE);
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}
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else if constexpr (AuIsSame_v<AuUInt32, T>)
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{
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ATOMIC_PREFIX_HAX(atomic_store)((atomic_uint_fast32_t *)in, val, __ATOMIC_RELEASE);
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}
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else if constexpr (AuIsSame_v<AuInt32, T>)
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{
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ATOMIC_PREFIX_HAX(atomic_store)((atomic_int_fast32_t *)in, val, __ATOMIC_RELEASE);
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}
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else
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{
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static_assert(AuIsVoid_v<T>, "T");
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}
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#if !(defined(AURORA_ARCH_X64) || defined(AURORA_ARCH_X86))
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__sync_synchronize();
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#endif
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#endif
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}
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template <>
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inline auline
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void AuAtomicUtils<AuUInt8>::ClearU8Lock(AuUInt8 *in)
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{
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#if defined(AURORA_COMPILER_MSVC) && (defined(AURORA_ARCH_X64) || defined(AURORA_ARCH_X86))
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*in = 0;
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::_ReadWriteBarrier();
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#elif defined(AURORA_COMPILER_MSVC)
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// i think this will work on aarch64 and most risc architectures
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InterlockedAndRelease((volatile LONG *)in, ~0xFF);
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#else
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ATOMIC_PREFIX_HAX(atomic_store)((atomic_uint_fast8_t *)in, 0, __ATOMIC_RELEASE);
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#if !(defined(AURORA_ARCH_X64) || defined(AURORA_ARCH_X86))
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__sync_synchronize();
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#endif
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#endif
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}
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template <>
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inline auline
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void AuAtomicUtils<AuUInt32>::ClearU8Lock(AuUInt32 *in)
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{
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#if defined(AU_CPU_ENDIAN_LITTLE)
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AuAtomicUtils<AuUInt8>::ClearU8Lock((AuUInt8 *)in);
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#else
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AuAtomicUtils<AuUInt8>::ClearU8Lock(((AuUInt8 *)in) + 3);
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#endif
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}
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template <class T>
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inline auline bool AuAtomicUtils<T>::TestAndSet(T *in, const AuUInt8 offset)
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{
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return AuAtomicUtils<T>::Set(in, offset) & (1 << offset);
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}
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#if defined(AURORA_COMPILER_MSVC) && (defined(AURORA_ARCH_X64) || defined(AURORA_ARCH_X86))
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template <>
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inline auline bool AuAtomicUtils<unsigned long>::TestAndSet(unsigned long *in, const AuUInt8 offset)
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{
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return _interlockedbittestandset(reinterpret_cast<volatile long *>(in), offset);
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}
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template <>
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inline auline bool AuAtomicUtils<long>::TestAndSet(long *in, const AuUInt8 offset)
|
|
{
|
|
return _interlockedbittestandset(reinterpret_cast<volatile long *>(in), offset);
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|
}
|
|
|
|
template <>
|
|
inline auline bool AuAtomicUtils<AuUInt32>::TestAndSet(AuUInt32 *in, const AuUInt8 offset)
|
|
{
|
|
return _interlockedbittestandset(reinterpret_cast<volatile long *>(in), offset);
|
|
}
|
|
|
|
template <>
|
|
inline auline bool AuAtomicUtils<AuInt32>::TestAndSet(AuInt32 *in, const AuUInt8 offset)
|
|
{
|
|
return _interlockedbittestandset(reinterpret_cast<volatile long *>(in), offset);
|
|
}
|
|
|
|
#if !defined(AURORA_IS_32BIT)
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|
template <>
|
|
inline auline bool AuAtomicUtils<AuUInt64>::TestAndSet(AuUInt64 *in, const AuUInt8 offset)
|
|
{
|
|
return _interlockedbittestandset64(reinterpret_cast<volatile long long *>(in), offset);
|
|
}
|
|
|
|
template <>
|
|
inline auline bool AuAtomicUtils<AuInt64>::TestAndSet(AuInt64 *in, const AuUInt8 offset)
|
|
{
|
|
return _interlockedbittestandset64(reinterpret_cast<volatile long long *>(in), offset);
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
|
|
template <class T>
|
|
auline
|
|
void AuAtomicStore(T *in, T value)
|
|
{
|
|
AuAtomicUtils<T>::Store(in, value);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
T AuAtomicLoad(T *in)
|
|
{
|
|
return AuAtomicUtils<T>::Load(in);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
void AuAtomicClearU8Lock(T *in)
|
|
{
|
|
AuAtomicUtils<T>::ClearU8Lock(in);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
T AuAtomicOrSetBit(T *in, AuUInt8 offset)
|
|
{
|
|
return AuAtomicUtils<T>::Set(in, offset);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
bool AuAtomicSet(T *in, AuUInt8 offset)
|
|
{
|
|
return AuAtomicOrSetBit(in, offset) & (T(1) << offset);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
T AuAtomicAndUnsetBit(T *in, AuUInt8 offset)
|
|
{
|
|
return AuAtomicUtils<T>::And(in, ~(T(1) << T(offset)));
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
bool AuAtomicUnset(T *in, AuUInt8 offset)
|
|
{
|
|
auto uBit = T(1) << T(offset);
|
|
return AuAtomicUtils<T>::And(in, ~(uBit)) & uBit;
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
T AuAtomicOr(T *in, T value)
|
|
{
|
|
return AuAtomicUtils<T>::Or(in, value);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
T AuAtomicAnd(T *in, T value)
|
|
{
|
|
return AuAtomicUtils<T>::And(in, value);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
T AuAtomicAdd(T *in, T addend)
|
|
{
|
|
return AuAtomicUtils<T>::Add(in, addend);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
T AuAtomicSub(T *in, T minuend)
|
|
{
|
|
return AuAtomicUtils<T>::Sub(in, minuend);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
T AuAtomicCompareExchange(T *in, T replace, T compare)
|
|
{
|
|
return AuAtomicUtils<T>::CompareExchange(in, replace, compare);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
bool AuAtomicTestAndSet(T *in, AuUInt8 offset)
|
|
{
|
|
return AuAtomicUtils<T>::TestAndSet(in, offset);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
void AuAtomicStore(volatile T *in, T value)
|
|
{
|
|
AuAtomicUtils<T>::Store((T *)in, value);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
T AuAtomicLoad(volatile T *in)
|
|
{
|
|
return AuAtomicUtils<T>::Load((T *)in);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
void AuAtomicClearU8Lock(volatile T *in)
|
|
{
|
|
AuAtomicUtils<T>::ClearU8Lock((T *)in);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
T AuAtomicOrSetBit(volatile T *in, AuUInt8 offset)
|
|
{
|
|
return AuAtomicOrSetBit((T *)in, offset);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
bool AuAtomicSet(volatile T *in, AuUInt8 offset)
|
|
{
|
|
return AuAtomicSet((T *)in, offset);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
T AuAtomicAndUnsetBit(volatile T *in, AuUInt8 offset)
|
|
{
|
|
return AuAtomicAndUnsetBit((T *)in, offset);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
bool AuAtomicUnset(volatile T *in, AuUInt8 offset)
|
|
{
|
|
return AuAtomicUnset((T *)in, offset);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
T AuAtomicOr(volatile T *in, T value)
|
|
{
|
|
return AuAtomicOr((T *)in, value);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
T AuAtomicAnd(volatile T *in, T value)
|
|
{
|
|
return AuAtomicAnd((T *)in, value);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
T AuAtomicAdd(volatile T *in, T addend)
|
|
{
|
|
return AuAtomicUtils<T>::Add((T *)(in), addend);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
T AuAtomicSub(volatile T *in, T minuend)
|
|
{
|
|
return AuAtomicUtils<T>::Sub((T *)(in), minuend);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
T AuAtomicCompareExchange(volatile T *in, T replace, T compare)
|
|
{
|
|
return AuAtomicUtils<T>::CompareExchange((T *)(in), replace, compare);
|
|
}
|
|
|
|
template <class T>
|
|
auline
|
|
bool AuAtomicTestAndSet(volatile T *in, AuUInt8 offset)
|
|
{
|
|
return AuAtomicUtils<T>::TestAndSet((T *)(in), offset);
|
|
} |