// Copyright (c) 2016-2018 Kiwano - Nomango
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#include "Tool/Allocator.h"

namespace memory
{
    MemoryAllocator *current_allocator_ = nullptr;

    MemoryAllocator *GetGlobalAllocator()
    {
        class GlobalAllocator : public MemoryAllocator
        {
        public:
            virtual void *Alloc(size_t size) override
            {
                return ::operator new(size);
            }

            virtual void Free(void *ptr) override
            {
                ::operator delete(ptr);
            }
        };

        static GlobalAllocator global_allocator;
        return &global_allocator;
    }

    MemoryAllocator *GetAllocator()
    {
        if (!current_allocator_)
        {
            current_allocator_ = GetGlobalAllocator();
        }
        return current_allocator_;
    }

    void SetAllocator(MemoryAllocator *allocator)
    {
        current_allocator_ = allocator;
    }

} // namespace memory