| /* |
| * Copyright (c) 2016-2018 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_CLLUTALLOCATOR_H__ |
| #define __ARM_COMPUTE_CLLUTALLOCATOR_H__ |
| |
| #include "arm_compute/runtime/ILutAllocator.h" |
| |
| #include "arm_compute/core/CL/OpenCL.h" |
| |
| #include <cstdint> |
| |
| namespace arm_compute |
| { |
| /** Basic implementation of a CL memory LUT allocator. */ |
| class CLLutAllocator : public ILutAllocator |
| { |
| public: |
| /** Default constructor. */ |
| CLLutAllocator(); |
| /** Default destructor. */ |
| ~CLLutAllocator() = default; |
| /** Prevent instances of this class from being copied (As this class contains pointers) */ |
| CLLutAllocator(const CLLutAllocator &) = delete; |
| /** Prevent instances of this class from being copy assigned (As this class contains pointers) */ |
| const CLLutAllocator &operator=(const CLLutAllocator &) = delete; |
| /** Interface to be implemented by the child class to return the pointer to the mapped data. |
| * |
| * @return pointer to the mapped data. |
| */ |
| uint8_t *data(); |
| /** Interface to be implemented by the child class to return the pointer to the CL data. |
| * |
| * @return pointer to the CL data. |
| */ |
| const cl::Buffer &cl_data() const; |
| /** Enqueue a map operation of the allocated buffer on the given queue. |
| * |
| * @param[in,out] q The CL command queue to use for the mapping operation. |
| * @param[in] blocking If true, then the mapping will be ready to use by the time |
| * this method returns, else it is the caller's responsibility |
| * to flush the queue and wait for the mapping operation to have completed before using the returned mapping pointer. |
| * |
| * @return The mapping address. |
| */ |
| uint8_t *map(cl::CommandQueue &q, bool blocking); |
| /** Enqueue an unmap operation of the allocated buffer on the given queue. |
| * |
| * @note This method simply enqueue the unmap operation, it is the caller's responsibility to flush the queue and make sure the unmap is finished before |
| * the memory is accessed by the device. |
| * |
| * @param[in,out] q The CL command queue to use for the mapping operation. |
| * @param[in] mapping The cpu mapping to unmap. |
| */ |
| void unmap(cl::CommandQueue &q, uint8_t *mapping); |
| |
| protected: |
| /** Allocate num_elements() * sizeof(type()) of OpenCL memory. */ |
| void allocate() override; |
| /** Call map() on the OpenCL buffer. |
| * |
| * @return A pointer to the beginning of the LUT's allocation. |
| */ |
| uint8_t *lock() override; |
| /** Call unmap() on the OpenCL buffer. */ |
| void unlock() override; |
| |
| private: |
| cl::Buffer _buffer; /**< OpenCL buffer containing the LUT data. */ |
| uint8_t *_mapping; /**< Pointer to the CPU mapping of the OpenCL buffer. */ |
| }; |
| } |
| |
| #endif /* __ARM_COMPUTE_CLLUTALLOCATOR_H__ */ |