libcruft-util/alloc/raw/malloc.hpp

/*
 * 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 2018 Danny Robson <danny@nerdcruft.net>
 */

#ifndef CRUFT_UTIL_ALLOC_RAW_MALLOC_HPP
#define CRUFT_UTIL_ALLOC_RAW_MALLOC_HPP

#include "../../view.hpp"

#include <cstddef>


namespace util::alloc::raw {
    class malloc {
    public:
        template <typename T>
        util::view<T*> allocate (size_t count)
        {
            return {
                reinterpret_cast<T*> (malloc (sizeof (T) * count)),
                count
            };
        }

        template <typename T>
        util::view<T*>
        allocate (size_t count, size_t align)
        {
            void* ptr;
            posix_memalign (&ptr, align, sizeof (T) * count);
            if (!ptr)
                throw std::bad_alloc ();

            return { reinterpret_cast<T*> (ptr), count };
        }

        template <typename T>
        void
        deallocate (util::view<std::byte*> ptr)
        {
            ::free (ptr.data ());
        }
    };
}


#endif