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/*
* Copyright (c) 2018-2019 ARM Limited.
*
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef ARM_COMPUTE_GRAPH_ITENSORHANDLE_H
#define ARM_COMPUTE_GRAPH_ITENSORHANDLE_H
#include "arm_compute/core/ITensor.h"
#include "arm_compute/graph/Types.h"
namespace arm_compute
{
// Forward declarations
class IMemoryGroup;
namespace graph
{
/** Tensor handle interface object */
class ITensorHandle
{
public:
/** Default virtual destructor */
virtual ~ITensorHandle() = default;
/** Allocates backend memory for the handle */
virtual void allocate() = 0;
/** Allocates backend memory for the handle */
virtual void free() = 0;
/** Set backend tensor to be managed by a memory group
*
* @param[in] mg Memory group
*/
virtual void manage(IMemoryGroup *mg) = 0;
/** Maps backend tensor object
*
* @param[in] blocking Flags if the mapping operations should be blocking
*/
virtual void map(bool blocking) = 0;
/** Un-maps a backend tensor object */
virtual void unmap() = 0;
/** Releases backend tensor if is marked as unused
*
*
* @note This has no effect on sub-tensors
* @warning Parent tensors don't keep track of sub-tensors,
* thus if a parent is set as unused then all sub-tensors will be invalidated,
* on the other hand if a sub-tensor is marked as unused then the parent tensor won't be released
*/
virtual void release_if_unused() = 0;
/** Backend tensor object accessor */
virtual arm_compute::ITensor &tensor() = 0;
/** Backend tensor object const accessor */
virtual const arm_compute::ITensor &tensor() const = 0;
/** Return the parent tensor handle if is a subtensor else this
*
* @return Parent tensor handle
*/
virtual ITensorHandle *parent_handle() = 0;
/** Checks if a backing tensor is a sub-tensor object or not
*
* @return True if the backend tensor is a sub-tensor else false
*/
virtual bool is_subtensor() const = 0;
/** Returns target type
*
* @return Target type
*/
virtual Target target() const = 0;
};
} // namespace graph
} // namespace arm_compute
#endif /* ARM_COMPUTE_GRAPH_ITENSORHANDLE_H */
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