c_realloc.hpp

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#ifndef EAGINE_MEMORY_C_REALLOC_HPP
#define EAGINE_MEMORY_C_REALLOC_HPP
 
#include "byte_alloc.hpp"
#include <cassert>
#include <limits>
 
namespace eagine::memory {
 
// c_byte_reallocator
template <typename Policy = default_byte_allocator_policy>
class c_byte_reallocator
  : public byte_allocator_impl<Policy, c_byte_reallocator> {
public:
    using size_type = span_size_t;
 
    auto equal(byte_allocator* a) const noexcept -> bool override {
        return dynamic_cast<c_byte_reallocator*>(a) != nullptr;
    }
 
    auto max_size(size_type) noexcept -> size_type override {
        return std::numeric_limits<size_type>::max();
    }
 
    auto has_allocated(const owned_block&, size_type) noexcept
      -> tribool override {
        return indeterminate;
    }
 
    auto allocate(size_type n, size_type a) noexcept -> owned_block override;
 
    void deallocate(owned_block&& b, size_type) noexcept override;
 
    auto can_reallocate(const owned_block&, size_type, size_type) noexcept
      -> bool override {
        return true;
    }
 
    auto reallocate(owned_block&& b, size_type n, size_type a) noexcept
      -> owned_block override;
};
 
} // namespace eagine::memory
 
#include <eagine/memory/c_realloc.inl>
 
#endif // EAGINE_MEMORY_C_REALLOC_HPP