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//
// immer: immutable data structures for C++
// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente
//
// This software is distributed under the Boost Software License, Version 1.0.
// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt
//
#pragma once
#include <atomic>
#include <cassert>
namespace immer {
/*!
* Adaptor that uses `SmallHeap` for allocations that are smaller or
* equal to `Size` and `BigHeap` otherwise.
*/
template <std::size_t Size, typename SmallHeap, typename BigHeap>
struct split_heap
{
template <typename... Tags>
static void* allocate(std::size_t size, Tags... tags)
{
return size <= Size ? SmallHeap::allocate(size, tags...)
: BigHeap::allocate(size, tags...);
}
template <typename... Tags>
static void deallocate(std::size_t size, void* data, Tags... tags)
{
if (size <= Size)
SmallHeap::deallocate(size, data, tags...);
else
BigHeap::deallocate(size, data, tags...);
}
};
} // namespace immer
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