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// Copyright (C) 2018 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
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