multi_schedule.hpp

// Copyright (C) 2018-2022 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
//

///////////////////////////////////////////////////////////////////////////////////////////////////
#pragma once

#include "schedule.hpp"

#ifdef  MULTIUNITTEST
#define MOCKTESTMACRO virtual
#define MultiDevicePlugin MockMultiDevicePlugin
#else
#define MOCKTESTMACRO
#endif

namespace MultiDevicePlugin {
struct ThisRequestExecutor : public IE::ITaskExecutor {
    explicit ThisRequestExecutor(WorkerInferRequest** ptr): _workptrptr{ptr} {}
    void run(IE::Task task) override {
        (*_workptrptr)->_task = std::move(task);
        (*_workptrptr)->_inferRequest->StartAsync();
    };
    WorkerInferRequest** _workptrptr = nullptr;
};

class MultiSchedule : public Schedule, public IE::ITaskExecutor {
public:
    using Ptr = std::shared_ptr<MultiSchedule>;
    IInferPtr CreateInferRequest() override;
    IInferPtr CreateInferRequestImpl(IE::InputsDataMap networkInputs, IE::OutputsDataMap networkOutputs) override;
    IE::IInferRequestInternal::Ptr CreateInferRequestImpl(const std::vector<std::shared_ptr<const ov::Node>>& inputs,
                                                          const std::vector<std::shared_ptr<const ov::Node>>& outputs) override;
    void run(IE::Task inferTask) override;
    void init(const ScheduleContext::Ptr& sContext) override;
    Pipeline GetPipeline(const IInferPtr& syncRequestImpl, WorkerInferRequest** WorkerInferRequest) override;
    virtual ~MultiSchedule();

public:
    static thread_local WorkerInferRequest* _thisWorkerInferRequest;
    // have to use the const char* ptr rather than std::string due to a bug in old gcc versions,
    // the bug is e.g. manifesting on the old CentOS (and it's 4.8.x gcc) used in our testing
    // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81880
    static thread_local const char* _thisPreferredDeviceName;

protected:
    virtual void GenerateWorkers(const std::string& device, const IE::SoExecutableNetworkInternal& executableNetwork);
    static bool RunPipelineTask(IE::Task& inferPipelineTask, NotBusyWorkerRequests& idleWorkerRequests, const DeviceName& preferred_device);
    virtual bool ScheduleToWorkerInferRequest(IE::Task, DeviceName preferred_device = "");
    std::string GetLogTag() const noexcept;

protected:
    IE::ThreadSafeQueue<IE::Task>                             _inferPipelineTasks;
    DeviceMap<std::unique_ptr<IE::ThreadSafeQueue<IE::Task>>> _inferPipelineTasksDeviceSpecific;
    DeviceMap<NotBusyWorkerRequests>                          _idleWorkerRequests;
    DeviceMap<std::vector<WorkerInferRequest>>                _workerRequests;
    mutable std::mutex                                        _mutex;
    std::atomic_size_t                                        _numRequestsCreated = {0};
    MultiScheduleContext::Ptr                                 _multiSContext;
    SoExecNetwork                                             _passthroughExeNet;
    Time                                                      _cpuHelpReleaseTime;
    unsigned int                                              _cpuHelpInferCount = 0;
    double                                                    _cpuHelpFps = 0.0;
    std::string                                               _LogTag;
};

}  // namespace MultiDevicePlugin