57 lines
1.6 KiB
C++
57 lines
1.6 KiB
C++
#ifndef OSRM_ENGINE_DATAFACADE_PROVIDER_HPP
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#define OSRM_ENGINE_DATAFACADE_PROVIDER_HPP
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#include "engine/data_watchdog.hpp"
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#include "engine/datafacade/contiguous_internalmem_datafacade.hpp"
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#include "engine/datafacade/process_memory_allocator.hpp"
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namespace osrm
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{
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namespace engine
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{
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template <typename AlgorithmT> class DataFacadeProvider
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{
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using FacadeT = datafacade::ContiguousInternalMemoryDataFacade<AlgorithmT>;
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public:
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virtual ~DataFacadeProvider() = default;
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virtual std::shared_ptr<const FacadeT> Get() const = 0;
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};
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template <typename AlgorithmT> class ImmutableProvider final : public DataFacadeProvider<AlgorithmT>
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{
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using FacadeT = datafacade::ContiguousInternalMemoryDataFacade<AlgorithmT>;
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public:
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ImmutableProvider(const storage::StorageConfig &config)
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: immutable_data_facade(std::make_shared<FacadeT>(
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std::make_shared<datafacade::ProcessMemoryAllocator>(config)))
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{
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}
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std::shared_ptr<const FacadeT> Get() const override final { return immutable_data_facade; }
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private:
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std::shared_ptr<const FacadeT> immutable_data_facade;
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};
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template <typename AlgorithmT> class WatchingProvider final : public DataFacadeProvider<AlgorithmT>
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{
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using FacadeT = datafacade::ContiguousInternalMemoryDataFacade<AlgorithmT>;
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DataWatchdog<AlgorithmT> watchdog;
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public:
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std::shared_ptr<const FacadeT> Get() const override final
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{
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// We need a singleton here because multiple instances of DataWatchdog
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// conflict on shared memory mappings
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return watchdog.Get();
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}
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};
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}
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}
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#endif
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