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Diffstat (limited to 'arm_compute/runtime/CL/CLLutAllocator.h')
-rw-r--r-- | arm_compute/runtime/CL/CLLutAllocator.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/arm_compute/runtime/CL/CLLutAllocator.h b/arm_compute/runtime/CL/CLLutAllocator.h new file mode 100644 index 0000000000..4648ffb51f --- /dev/null +++ b/arm_compute/runtime/CL/CLLutAllocator.h @@ -0,0 +1,88 @@ +/* + * Copyright (c) 2016, 2017 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. */ + uint8_t *data(); + /** Interface to be implemented by the child class to return the 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__ */ |