libcruft-util/alloc/raw/fallback.hpp

52 lines
1.4 KiB
C++

/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright 2015-2017 Danny Robson <danny@nerdcruft.net>
*/
#ifndef CRUFT_UTIL_ALLOC_RAW_FALLBACK_HPP
#define CRUFT_UTIL_ALLOC_RAW_FALLBACK_HPP
#include "../../view.hpp"
#include <cstddef>
#include <tuple>
namespace util::alloc::raw {
/// A raw memory allocator that allocates memory series of child
/// allocators, preferring earlier allocators.
template <typename ...ChildT>
class fallback {
public:
fallback (ChildT &..._children):
m_children (_children...)
{ ; }
template <typename T>
util::view<T*>
allocate (size_t bytes);
template <typename T>
util::view<T*>
allocate (size_t bytes, size_t align);
template <typename T>
void deallocate (util::view<std::byte*> ptr);
private:
std::tuple<ChildT&...> m_children;
};
}
#endif