ie_imemory_state.hpp

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 // Copyright (C) 2018-2019 Intel Corporation


 // SPDX-License-Identifier: Apache-2.0


 //


 


 /**


  * @brief a header file for IMemoryState interface


  * @file ie_imemory_state.hpp


  */


 

 #pragma once


 #include <memory>


 #include "details/ie_no_copy.hpp"


 #include "ie_common.h"


 #include "ie_blob.h"


 

 namespace InferenceEngine {

 


 /**


  * @brief manages data for reset operations


  */


 class IMemoryState : public details::no_copy {

  public:

     using Ptr = std::shared_ptr<IMemoryState>;

 


     /**


      * @brief Gets name of current memory state, if length of array is not enough name is truncated by len, null terminator is inserted as well.


      * @param name preallocated buffer for receiving name


      * @param len Length of the buffer


      * @param  resp Optional: pointer to an already allocated object to contain information in case of failure


      * @return Status code of the operation: OK (0) for success


      */


     virtual StatusCode GetName(char *name, size_t len, ResponseDesc *resp) const noexcept = 0;

 


     /**


      * @brief reset internal memory state for relevant iexecutable network, to a value specified in SetState


      * @param  resp Optional: pointer to an already allocated object to contain information in case of failure


      * @return Status code of the operation: OK (0) for success*


      */


     virtual StatusCode Reset(ResponseDesc *resp) noexcept = 0;

 


     /**


      * @brief  Sets the new state that is used for all future Reset() operations as a base.


      * This method can fail if Blob size does not match the internal state size or precision


      * @param  newState is the data to use as base state


      * @param  resp Optional: pointer to an already allocated object to contain information in case of failure


      * @return Status code of the operation: OK (0) for success


     */


     virtual StatusCode SetState(Blob::Ptr newState, ResponseDesc *resp) noexcept = 0;

 


     /**


      * @brief returns the value of the last memory state.


      * @details Since we roll memory after each infer, we can query the input state always and still get the last state.


      * @param lastState


      * @param  resp Optional: pointer to an already allocated object to contain information in case of failure


      * @return Status code of the operation: OK (0) for success


      * */


     virtual StatusCode GetLastState(Blob::CPtr & lastState, ResponseDesc *resp) const noexcept = 0;

 };

 

 }  // namespace InferenceEngine