59 lines
1.3 KiB
C++
59 lines
1.3 KiB
C++
#pragma once
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#include "asl/layout.hpp"
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#include "asl/meta.hpp"
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#include "asl/memory.hpp"
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namespace asl
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{
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template<typename T>
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concept allocator = moveable<T> && equality_comparable<T> &&
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requires(T& alloc, layout layout, void* ptr)
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{
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{ alloc.alloc(layout) } -> same_as<void*>;
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{ alloc.realloc(ptr, layout, layout) } -> same_as<void*>;
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alloc.dealloc(ptr, layout);
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};
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class GlobalHeap
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{
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public:
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static void* alloc(const layout&);
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static void* realloc(void* ptr, const layout& old, const layout& new_layout);
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static void dealloc(void* ptr, const layout&);
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constexpr bool operator==(const GlobalHeap&) const { return true; }
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};
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static_assert(allocator<GlobalHeap>);
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using DefaultAllocator = GlobalHeap;
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template<typename T>
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T* alloc_new(allocator auto& a, auto&&... args)
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{
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void* ptr = a.alloc(layout::of<T>());
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return construct_at<T>(ptr, ASL_FWD(args)...);
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}
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template<typename T>
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void alloc_delete(allocator auto& a, T* ptr)
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{
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destroy(ptr);
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a.dealloc(ptr, layout::of<T>());
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}
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template<typename T>
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constexpr T* alloc_new_default(auto&&... args)
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{
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return alloc_new<T>(DefaultAllocator{}, ASL_FWD(args)...);
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}
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template<typename T>
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void alloc_delete_default(T* ptr)
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{
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alloc_delete(DefaultAllocator{}, ptr);
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}
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} // namespace asl
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