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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 <immer/config.hpp>
#include <cstdlib>
#include <memory>
namespace immer {
/*!
* A heap that uses `std::malloc` and `std::free` to manage memory.
*/
struct malloc_heap
{
/*!
* Returns a pointer to a memory region of size `size`, if the
* allocation was successful and throws `std::bad_alloc` otherwise.
*/
template <typename... Tags>
static void* allocate(std::size_t size, Tags...)
{
auto p = std::malloc(size);
if (IMMER_UNLIKELY(!p))
throw std::bad_alloc{};
return p;
}
/*!
* Releases a memory region `data` that was previously returned by
* `allocate`. One must not use nor deallocate again a memory
* region that once it has been deallocated.
*/
static void deallocate(std::size_t, void* data) { std::free(data); }
};
} // namespace immer
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