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//
// Copyright © 2017 Arm Ltd. All rights reserved.
// SPDX-License-Identifier: MIT
//
#pragma once
#include <armnn/Types.hpp>
#include <armnn/BackendId.hpp>
#include <armnn/Optional.hpp>
#include <armnn/backends/ICustomAllocator.hpp>
#include <memory>
#include <unordered_map>
#include <functional>
namespace armnn
{
namespace profiling
{
class ProfilingService;
}
class IBackendInternal;
using IBackendInternalUniquePtr = std::unique_ptr<IBackendInternal>;
class BackendRegistry
{
public:
using PointerType = IBackendInternalUniquePtr;
using FactoryFunction = std::function<PointerType()>;
void Register(const BackendId& id, FactoryFunction factory);
bool IsBackendRegistered(const BackendId& id) const;
FactoryFunction GetFactory(const BackendId& id) const;
size_t Size() const;
BackendIdSet GetBackendIds() const;
std::string GetBackendIdsAsString() const;
void SetProfilingService(armnn::Optional<profiling::ProfilingService&> profilingService);
void RegisterAllocator(const BackendId& id, std::shared_ptr<ICustomAllocator> alloc);
std::unordered_map<BackendId, std::shared_ptr<ICustomAllocator>> GetAllocators();
BackendRegistry() {}
virtual ~BackendRegistry() {}
struct StaticRegistryInitializer
{
StaticRegistryInitializer(BackendRegistry& instance,
const BackendId& id,
FactoryFunction factory)
{
instance.Register(id, factory);
}
};
void Deregister(const BackendId& id);
void DeregisterAllocator(const BackendId &id);
protected:
using FactoryStorage = std::unordered_map<BackendId, FactoryFunction>;
/// For testing only
static void Swap(BackendRegistry& instance, FactoryStorage& other);
private:
BackendRegistry(const BackendRegistry&) = delete;
BackendRegistry& operator=(const BackendRegistry&) = delete;
FactoryStorage m_Factories;
armnn::Optional<profiling::ProfilingService&> m_ProfilingService;
std::unordered_map<BackendId, std::shared_ptr<ICustomAllocator>> m_CustomMemoryAllocatorMap;
};
BackendRegistry& BackendRegistryInstance();
} // namespace armnn
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