deallocate_many.h

Go to the documentation of this file.

#pragma once
 
#include "di/container/allocator/allocate.h"
#include "di/container/allocator/allocation_result.h"
#include "di/container/allocator/allocator.h"
#include "di/container/allocator/std_allocator.h"
#include "di/meta/vocab.h"
#include "di/util/voidify.h"
#include "di/vocab/expected/as_fallible.h"
#include "di/vocab/expected/try_infallible.h"
 
namespace di::container {
namespace detail {
    template<typename T>
    struct DeallocateManyFunction {
        constexpr void operator()(concepts::Allocator auto& allocator, T* pointer, usize count) const {
            if consteval {
                return std::allocator<T>().deallocate(pointer, count);
            }
 
            // NOTE: since the allocate must have succeeded, this multiplication won't overflow
            return di::deallocate(allocator, di::voidify(pointer), sizeof(T) * count, alignof(T));
        }
    };
}
 
template<typename T>
constexpr inline auto deallocate_many = detail::DeallocateManyFunction<T> {};
}
 
namespace di {
using container::deallocate_many;
}