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/*
* Copyright (c) 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_ITRANSFORMWEIGHTS_H
#define ARM_COMPUTE_ITRANSFORMWEIGHTS_H
#include <atomic>
namespace arm_compute
{
// Forward declarations
class ITensor;
/** Weights tensor transform interface
* In order to identify the different reshape functions, each reshape function has
* to generate a unique id. We use the following conversion using an unsigned 32bit value:
*
* Lower two bits store the target:
* 00 -> NEON
* 01 -> CL
* 10 -> GLES
* 11 -> Unused
*
* Five bits store the id of the reshape function:
* 00000 -> FullyConnectedLayerReshapeWeights
* 00001 -> ConvertFullyConnectedWeights
* 00010 -> ConvolutionLayerReshapeWeights
* 00011 -> DepthwiseConvolutionLayerReshapeWeights
* 00100 -> GEMMReshapeLHSMatrixKernel
* 00101 -> GEMMReshapeRHSMatrixKernel
*
* Rest of the bits are used for identifying special cases such as assembly functions and extra
* arguments in the reshape kernels.
*
* */
class ITransformWeights
{
public:
/** Default Constructor */
ITransformWeights() = default;
/** Default Destructor */
virtual ~ITransformWeights() = default;
/** Prevent instances of this class to be copy constructed */
ITransformWeights(const ITransformWeights &) = delete;
/** Prevent instances of this class to be copied */
ITransformWeights &operator=(const ITransformWeights &) = delete;
/** Allow instances of this class to be move constructed */
ITransformWeights(ITransformWeights &&other)
{
*this = std::move(other);
}
/** Allow instances of this class to be moved */
ITransformWeights &operator=(ITransformWeights &&other)
{
if(this != &other)
{
_num_refcount = other._num_refcount.load();
_reshape_run = other._reshape_run;
}
return *this;
}
/** Get a pointer to the transformed weights
*
* @return The pointer to the transformed ITensor weights
*/
virtual ITensor *get_weights() = 0;
/** Function that returns a unique id of the reshape function
*
* @return The computed unique id
*/
virtual uint32_t uid() = 0;
/** Run the transformation function */
virtual void run() = 0;
/** Release transformed weights memory */
virtual void release() = 0;
/** Increase the object's refcount */
void increase_refcount()
{
++_num_refcount;
}
/** Decrease the object's refcount and return the updated value
*
* @return The updated refcount
* */
int32_t decrease_refcount()
{
return --_num_refcount;
}
/** Function that returns a flag on whether the weights are reshaped or not
*
* @return True if the function is reshaped
*/
bool is_reshape_run()
{
return _reshape_run;
}
protected:
std::atomic<int32_t> _num_refcount{ 0 };
bool _reshape_run{ false };
};
} // arm_compute
#endif /*ARM_COMPUTE_ITRANSFORMWEIGHTS_H */
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