45 lines
1.0 KiB
C++
45 lines
1.0 KiB
C++
#ifndef OSRM_ENGINE_DATAFACADE_MMAP_MEMORY_ALLOCATOR_HPP_
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#define OSRM_ENGINE_DATAFACADE_MMAP_MEMORY_ALLOCATOR_HPP_
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#include "engine/datafacade/contiguous_block_allocator.hpp"
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#include "storage/storage_config.hpp"
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#include "util/vector_view.hpp"
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#include <boost/iostreams/device/mapped_file.hpp>
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#include <memory>
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#include <string>
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namespace osrm
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{
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namespace engine
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{
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namespace datafacade
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{
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/**
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* This allocator uses file backed mmap memory block as the data location.
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*/
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class MMapMemoryAllocator : public ContiguousBlockAllocator
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{
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public:
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explicit MMapMemoryAllocator(const storage::StorageConfig &config);
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~MMapMemoryAllocator() override final;
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// interface to give access to the datafacades
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const storage::SharedDataIndex &GetIndex() override final;
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private:
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storage::SharedDataIndex index;
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std::vector<boost::iostreams::mapped_file> mapped_memory_files;
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std::string rtree_filename;
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};
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} // namespace datafacade
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} // namespace engine
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} // namespace osrm
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#endif // OSRM_ENGINE_DATAFACADE_SHARED_MEMORY_ALLOCATOR_HPP_
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