116 lines
3.1 KiB
C++
116 lines
3.1 KiB
C++
// Copyright (C) 2017 Jérôme Leclercq
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// This file is part of the "Nazara Engine - Core module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#pragma once
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#ifndef NAZARA_MEMORYHELPER_HPP
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#define NAZARA_MEMORYHELPER_HPP
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#if defined(NAZARA_COMPILER_MSVC) || defined(NAZARA_COMPILER_MINGW)
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#include <malloc.h>
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#define NAZARA_ALLOCA(size) _alloca(size)
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#define NAZARA_ALLOCA_SUPPORT
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#elif defined(NAZARA_COMPILER_CLANG) || defined(NAZARA_COMPILER_GCC) || defined(NAZARA_COMPILER_INTEL)
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#include <alloca.h>
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#define NAZARA_ALLOCA(size) alloca(size)
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#define NAZARA_ALLOCA_SUPPORT
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#endif
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#ifdef NAZARA_ALLOCA_SUPPORT
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#define NazaraStackAllocation(T, size) Nz::StackArray<T>(static_cast<T*>(NAZARA_ALLOCA((size) * sizeof(T))), size)
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#define NazaraStackAllocationNoInit(T, size) Nz::StackArray<T>(static_cast<T*>(NAZARA_ALLOCA((size) * sizeof(T))), size, Nz::NoInitTag())
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#else
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#define NazaraStackAllocation(T, size) Nz::StackArray<T>(static_cast<T*>(Nz::OperatorNew((size) * sizeof(T))), size)
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#define NazaraStackAllocationNoInit(T, size) Nz::StackArray<T>(static_cast<T*>(Nz::OperatorNew((size) * sizeof(T))), size, Nz::NoInitTag())
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#endif
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#include <cstddef>
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#include <iterator>
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namespace Nz
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{
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void OperatorDelete(void* ptr);
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void* OperatorNew(std::size_t size);
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template<typename T, typename... Args>
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T* PlacementNew(T* ptr, Args&&... args);
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template<typename T>
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void PlacementDestroy(T* ptr);
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struct NoInitTag {};
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template<typename T>
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class StackArray
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{
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public:
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using value_type = T;
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using const_iterator = const value_type*;
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using const_pointer = const value_type*;
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using const_reference = const value_type&;
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using const_reverse_iterator = std::reverse_iterator<const_iterator>;
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using difference_type = std::ptrdiff_t;
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using iterator = value_type*;
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using pointer = value_type*;
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using reference = value_type&;
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using reverse_iterator = std::reverse_iterator<iterator>;
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using size_type = std::size_t;
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StackArray(T* stackMemory, std::size_t size);
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StackArray(T* stackMemory, std::size_t size, NoInitTag);
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~StackArray();
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reference back();
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const_reference back() const;
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iterator begin() noexcept;
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const_iterator begin() const noexcept;
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const_iterator cbegin() const noexcept;
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const_iterator cend() const noexcept;
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const_reverse_iterator crbegin() const noexcept;
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const_reverse_iterator crend() const noexcept;
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T* data() noexcept;
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const T* data() const noexcept;
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bool empty() const noexcept;
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iterator end() noexcept;
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const_iterator end() const noexcept;
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void fill(const T& value);
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reference front() noexcept;
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const_reference front() const noexcept;
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size_type max_size() const noexcept;
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reverse_iterator rbegin() noexcept;
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const_reverse_iterator rbegin() const noexcept;
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reverse_iterator rend() noexcept;
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const_reverse_iterator rend() const noexcept;
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size_type size() const noexcept;
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reference operator[](size_type pos);
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const_reference operator[](size_type pos) const;
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private:
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std::size_t m_size;
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T* m_ptr;
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};
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}
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#include <Nazara/Core/MemoryHelper.inl>
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#endif // NAZARA_MEMORYHELPER_HPP
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