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/*
* Copyright (c) 2017-2018 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_GCTENSORALLOCATOR_H__
#define __ARM_COMPUTE_GCTENSORALLOCATOR_H__
#include "arm_compute/core/GLES_COMPUTE/OpenGLES.h"
#include "arm_compute/runtime/GLES_COMPUTE/GCMemory.h"
#include "arm_compute/runtime/ITensorAllocator.h"
#include "arm_compute/runtime/MemoryGroupBase.h"
#include <memory>
namespace arm_compute
{
class GCTensor;
template <typename>
class MemoryGroupBase;
using GCMemoryGroup = MemoryGroupBase<GCTensor>;
/** Basic implementation of a GLES memory tensor allocator. */
class GCTensorAllocator : public ITensorAllocator
{
public:
/** Default constructor. */
GCTensorAllocator(GCTensor *owner = nullptr);
/** Prevent instances of this class from being copied (As this class contains pointers) */
GCTensorAllocator(const GCTensorAllocator &) = delete;
/** Prevent instances of this class from being copy assigned (As this class contains pointers) */
GCTensorAllocator &operator=(const GCTensorAllocator &) = delete;
/** Allow instances of this class to be moved */
GCTensorAllocator(GCTensorAllocator &&) = default;
/** Allow instances of this class to be moved */
GCTensorAllocator &operator=(GCTensorAllocator &&) = default;
/** Default destructor */
~GCTensorAllocator() = default;
/** Interface to be implemented by the child class to return the pointer to the mapped data.
*
* @return a pointer to the data.
*/
uint8_t *data();
/** Get the OpenGL ES buffer object name
*
* @return The buffer object name
*/
GLuint get_gl_ssbo_name() const;
/** Enqueue a map operation of the allocated buffer on the given queue.
*
* @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(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.
*
*/
void unmap();
/** Allocate size specified by TensorInfo of GLES memory.
*
* @note: The tensor must not already be allocated when calling this function.
*
*/
void allocate() override;
/** Free allocated GLES memory.
*
* @note The tensor must have been allocated when calling this function.
*
*/
void free() override;
/** Associates the tensor with a memory group
*
* @param[in] associated_memory_group Memory group to associate the tensor with
*/
void set_associated_memory_group(GCMemoryGroup *associated_memory_group);
protected:
/** Call map() on the SSBO.
*
* @return A pointer to the beginning of the tensor's allocation.
*/
uint8_t *lock() override;
/** Call unmap() on the SSBO. */
void unlock() override;
private:
GCMemoryGroup *_associated_memory_group; /**< Registered memory group */
GCMemory _memory; /**< OpenGL ES memory */
uint8_t *_mapping; /**< Pointer to the CPU mapping of the OpenGL ES buffer. */
GCTensor *_owner; /**< Owner of the allocator */
};
} // namespace arm_compute
#endif /* __ARM_COMPUTE_GCTENSORALLOCATOR_H__ */
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