tobid7
f19c947fc3
- readd the c++ linear allocator for 3ds - start switching from PD::Vec to std::vector - Add Color::Hex as constexpr for compiletime color converts - Add FNV Hasing functions - Make UI7 ids be able to be generated at compile time - Added a Throw Function (for whatever) - Added HexCHar2Int (replaces the lookup table) - Made u128 fully constexpr
49 lines
1.3 KiB
C++
49 lines
1.3 KiB
C++
#pragma once
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#include <3ds.h>
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#include <pd/core/common.hpp>
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// Custom C++ Allocator class to interface with libctru linear heap memory
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// based on this guide:
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// https://johnfarrier.com/custom-allocators-in-c-high-performance-memory-management/
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namespace PD {
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template <typename T>
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class LinearAllocator {
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public:
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using value_type = T;
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LinearAllocator() noexcept = default;
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template <typename U>
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constexpr LinearAllocator(const LinearAllocator<U>&) noexcept {}
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T* allocate(std::size_t n) {
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if (n > max_size()) {
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throw std::runtime_error("[PD] LinearAllocator: Bad alloc!");
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}
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return static_cast<T*>(linearAlloc(n * sizeof(T)));
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}
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void deallocate(T* p, std::size_t) noexcept { linearFree(p); }
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template <class U, class... Args>
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void construct(U* p, Args&&... args) {
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::new ((void*)p) U(std::forward<Args>(args)...);
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}
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template <class U>
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void destroy(U* p) {
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p->~U();
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}
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friend bool operator==(const LinearAllocator, const LinearAllocator) {
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return true;
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}
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friend bool operator!=(const LinearAllocator, const LinearAllocator) {
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return false;
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}
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// Use linearSpace free as max_size to not allocate out of bounds
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// or to b eable to see a crash report screen.
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size_t max_size() const noexcept { return linearSpaceFree(); }
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};
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} // namespace PD
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