85 lines
3.0 KiB
C++
85 lines
3.0 KiB
C++
/*
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* Copyright (c) 2016-2019 Arm Limited.
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*
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* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef ARM_COMPUTE_ILUTALLOCATOR_H
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#define ARM_COMPUTE_ILUTALLOCATOR_H
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#include "arm_compute/core/Types.h"
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#include <cstddef>
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#include <cstdint>
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namespace arm_compute
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{
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/** Basic interface to allocate LUTs' */
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class ILutAllocator
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{
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public:
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/** Default constructor */
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ILutAllocator();
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/** Default virtual destructor */
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virtual ~ILutAllocator() = default;
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/** Allow instances of this class to be move constructed */
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ILutAllocator(ILutAllocator &&) = default;
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/** Allow instances of this class to be moved */
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ILutAllocator &operator=(ILutAllocator &&) = default;
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/** Allocate an LUT of the requested number of elements and data_type.
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*
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* @param[in] num_elements Number of elements of the LUT.
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* @param[in] data_type Data type of each element.
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*/
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void init(size_t num_elements, DataType data_type);
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/** Returns the total number of elements in the LUT.
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*
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* @return Total number of elements.
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*/
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size_t num_elements() const;
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/** Returns the type of the LUT.
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*
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* @return The type of the LUT.
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*/
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DataType type() const;
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/** Returns the total size in bytes of the LUT.
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*
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* @return Total size of the LUT in bytes.
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*/
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size_t size() const;
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protected:
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/** Interface to be implemented by the child class to allocate the LUT. */
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virtual void allocate() = 0;
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/** Interface to be implemented by the child class to lock the memory allocation for the CPU to access.
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*
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* @return Pointer to a CPU mapping of the memory
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*/
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virtual uint8_t *lock() = 0;
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/** Interface to be implemented by the child class to unlock the memory allocation after the CPU is done accessing it. */
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virtual void unlock() = 0;
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private:
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size_t _num_elements; /**< Number of elements allocated */
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DataType _data_type; /**< Data type of LUT elements. */
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};
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}
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#endif /* ARM_COMPUTE_ILUTALLOCATOR_H */
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