MNN/source/backend/cpu/CPUBackend.hpp

//
//  CPUBackend.hpp
//  MNN
//
//  Created by MNN on 2018/07/06.
//  Copyright © 2018, Alibaba Group Holding Limited
//

#ifndef CPUBackend_hpp
#define CPUBackend_hpp

#include <stdio.h>
#include <map>
#include <memory>
#include "Backend.hpp"
#include "Execution.hpp"
#include "MNN_generated.h"

namespace MNN {
class BufferAllocator;

class CPUBackend final : public Backend {
public:
    CPUBackend(int numberThread = 4, BackendConfig::MemoryMode memory = BackendConfig::Memory_Normal,
               BackendConfig::PowerMode = BackendConfig::Power_Normal);
    virtual ~CPUBackend();

public:
    virtual bool onAcquireBuffer(const Tensor* nativeTensor, StorageType storageType) override;
    virtual bool onReleaseBuffer(const Tensor* nativeTensor, StorageType storageType) override;
    virtual bool onAllocateBuffer() override;
    virtual bool onClearBuffer() override;
    virtual void onCopyBuffer(const Tensor* srcTensor, const Tensor* dstTensor) const override;

    virtual Execution* onCreate(const std::vector<Tensor*>& inputs, const std::vector<Tensor*>& outputs,
                                const MNN::Op* op) override;
    virtual void onExecuteBegin() const override;
    virtual void onExecuteEnd() const override {
        // nothing to do
    }

public:
    class Creator {
    public:
        virtual Execution* onCreate(const std::vector<Tensor*>& inputs, const std::vector<Tensor*>& outputs,
                                    const MNN::Op* op, Backend* backend) const = 0;
    };

    static bool addCreator(OpType t, Creator* c);

    int threadNumber() const {
        return mThreadNumber;
    }

    BufferAllocator* getBufferAllocator() const {
        return mDynamicAllocator.get();
    }

    BackendConfig::MemoryMode memoryMode() const {
        return mMemory;
    }
    BackendConfig::PowerMode powerMode() const {
        return mPower;
    }

private:
    std::unique_ptr<BufferAllocator> mStaticAllocator;
    std::unique_ptr<BufferAllocator> mDynamicAllocator;
    int mThreadNumber;
    const BackendConfig::MemoryMode mMemory;
    const BackendConfig::PowerMode mPower;
};
    
#define REGISTER_CPU_OP_CREATOR(name, opType) void ___##name##__##opType##__() {\
    CPUBackend::addCreator(opType, new name);\
}
    
} // namespace MNN

#endif /* CPUBackend_hpp */