| // |
| // Copyright © 2021-2022 Arm Ltd and Contributors. All rights reserved. |
| // SPDX-License-Identifier: MIT |
| // |
| #if !defined(ARMNN_DISABLE_THREADS) |
| |
| #pragma once |
| |
| #include "IRuntime.hpp" |
| #include <armnn/Tensor.hpp> |
| #include <armnn/Types.hpp> |
| #include <stdint.h> |
| #include <thread> |
| #include <mutex> |
| #include <condition_variable> |
| #include <unordered_map> |
| #include <queue> |
| #include <iosfwd> |
| #include <memory> |
| #include <tuple> |
| #include <vector> |
| |
| namespace armnn |
| { |
| namespace experimental |
| { |
| class IAsyncExecutionCallback; |
| class IWorkingMemHandle; |
| |
| class Threadpool |
| { |
| public: |
| Threadpool(std::size_t numThreads, |
| IRuntime* runtimePtr, |
| std::vector<std::shared_ptr<IWorkingMemHandle>> memHandles); |
| |
| ~Threadpool() |
| { |
| TerminateThreadPool(); |
| } |
| |
| void LoadMemHandles(std::vector<std::shared_ptr<IWorkingMemHandle>> memHandles); |
| void UnloadMemHandles(NetworkId networkId); |
| |
| /// Schedule an asynchronous execution on the loaded network |
| void Schedule(NetworkId networkId, |
| const InputTensors &inputTensors, |
| const OutputTensors &outputTensors, |
| const QosExecPriority priority, |
| std::shared_ptr<IAsyncExecutionCallback> cb); |
| |
| void TerminateThreadPool() noexcept; |
| |
| private: |
| using ExecutionTuple = std::tuple<NetworkId, |
| InputTensors, |
| OutputTensors, |
| std::shared_ptr<IAsyncExecutionCallback>>; |
| |
| using ExecutionQueue = std::queue<std::shared_ptr<ExecutionTuple>>; |
| |
| void ProcessExecPriorities(uint32_t index); |
| |
| IRuntime* m_RuntimePtr; |
| |
| ExecutionQueue m_HighPriorityQueue; |
| ExecutionQueue m_MediumPriorityQueue; |
| ExecutionQueue m_LowPriorityQueue; |
| |
| // Condition Variables require mutex which will guard the shared state. |
| // Has an event happened? Stop signal for example |
| std::condition_variable m_ThreadPoolEvent; |
| std::mutex m_ThreadPoolMutex; |
| |
| // The shared state for conditional variable |
| bool m_TerminatePool = false; |
| |
| std::unordered_map<NetworkId, std::vector<std::shared_ptr<IWorkingMemHandle>>> m_WorkingMemHandleMap; |
| std::vector<std::unique_ptr<std::thread>> m_Threads; |
| }; |
| |
| } // namespace experimental |
| |
| } // namespace armnn |
| |
| #endif |