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alloc/chunked: remove local fwd decl for std::pmr::memory_resource

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This commit is contained in:
Danny Robson 2023-05-15 10:29:34 +10:00
parent 92dda992ee
commit 161f84ef53
1 changed files with 1 additions and 37 deletions
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36
alloc/chunked.hpp
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@ -8,48 +8,12 @@
#pragma once
#if 0 && __has_include(<memory_resource>)
#include <memory_resource>
#else
#include <cstddef>
#endif
#include <memory>
#include <vector>
namespace std::pmr {
class memory_resource {
public:
memory_resource () = default;
memory_resource (memory_resource const&) = default;
memory_resource& operator= (memory_resource const&) = default;
virtual ~memory_resource () = default;
[[nodiscard]] void* allocate (
std::size_t bytes,
std::size_t alignment = alignof (std::max_align_t)
) { return do_allocate (bytes, alignment); }
void deallocate(
void* p,
std::size_t bytes,
std::size_t alignment = alignof(std::max_align_t)
) { return do_deallocate (p, bytes, alignment); }
bool is_equal (memory_resource const &rhs) const noexcept
{
return do_is_equal (rhs);
}
private:
virtual void *do_allocate (std::size_t bytes, std::size_t alignment) = 0;
virtual void do_deallocate (void *p, std::size_t bytes, std::size_t alignment) = 0;
virtual bool do_is_equal (memory_resource const&) const noexcept = 0;
};
}
///////////////////////////////////////////////////////////////////////////////
namespace cruft::alloc {
/// An unbounded contiguous allocator that operates on chunks, similar to