86 lines
2.4 KiB
C++
86 lines
2.4 KiB
C++
/***
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Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: LockGuard.hpp
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Date: 2021-6-10
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Author: Reece
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***/
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#pragma once
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namespace Aurora::Threading
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{
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template <class T>
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struct AuOperatorArrow
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{
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template <class C> static constexpr AuTrueType Test(decltype(&C::operator->));
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template <class C> static constexpr AuFalseType Test(...);
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using type = decltype(Test<const T>(0));
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};
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template<typename T>
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class LockGuard
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{
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using Constless_t = T;
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using ConstlessPtr_t = AuConditional_t<AuIsPointer_v<Constless_t>, Constless_t, Constless_t *>;
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using Internal_t = AuRemovePointer_t<Constless_t>;
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static const bool kBoolArrowOp = AuOperatorArrow<AuRemovePointer_t<T>>::type::value;
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public:
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auline LockGuard(const T &lock)
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{
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ConstlessPtr_t pInterface {};
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if constexpr (AuIsPointer_v<T>)
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{
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pInterface = (ConstlessPtr_t)lock;
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}
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else
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{
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pInterface = (ConstlessPtr_t)&lock;
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}
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if constexpr (AuIsBaseOfTemplate<AURORA_RUNTIME_AU_SHARED_PTR, Internal_t>::value || AuIsBaseOfTemplate<AURORA_RUNTIME_AU_UNIQUE_PTR, Internal_t>::value)
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{
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pInterface->get()->Lock();
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}
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else if constexpr (kBoolArrowOp)
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{
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(*pInterface)->Lock();
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}
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else
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{
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pInterface->Lock();
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}
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this->pAnnoying_ = pInterface;
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}
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auline ~LockGuard()
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{
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if (!this->pAnnoying_)
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{
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return;
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}
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if constexpr (AuIsBaseOfTemplate<AURORA_RUNTIME_AU_SHARED_PTR, Internal_t>::value || AuIsBaseOfTemplate<AURORA_RUNTIME_AU_UNIQUE_PTR, Internal_t>::value)
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{
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this->pAnnoying_->get()->Unlock();
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}
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else if constexpr (kBoolArrowOp)
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{
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(*this->pAnnoying_)->Unlock();
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}
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else
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{
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this->pAnnoying_->Unlock();
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}
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}
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private:
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ConstlessPtr_t pAnnoying_ {};
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};
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#define AU_LOCK_GUARD(variable) Aurora::Threading::LockGuard<decltype(variable)> AU_CONCAT(__stack_lock, __COUNTER__) (variable);
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} |