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/*
* Copyright (c) 2018-2019 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_GRAPH_EDGE_H
#define ARM_COMPUTE_GRAPH_EDGE_H
#include "arm_compute/graph/INode.h"
#include "arm_compute/graph/Tensor.h"
#include "arm_compute/graph/Types.h"
namespace arm_compute
{
namespace graph
{
// Forward declarations
class Graph;
/** Graph Edge */
class Edge final
{
public:
/** Default Constructor
*
* @param[in] id Edge id
* @param[in] producer Producer node id
* @param[in] producer_idx Producer node output index
* @param[in] consumer Consumer node id
* @param[in] consumer_idx Consumer node input index
* @param[in] tensor Tensor associated with the edge
*/
Edge(EdgeID id,
INode *producer,
unsigned int producer_idx,
INode *consumer,
unsigned int consumer_idx,
Tensor *tensor)
: _id(id),
_producer(producer),
_consumer(consumer),
_producer_idx(producer_idx),
_consumer_idx(consumer_idx),
_tensor(tensor)
{
}
/** Returns edge id
*
* @return Edge id
*/
EdgeID id() const
{
return _id;
}
/** Returns producer node id
*
* @return Producer node id
*/
NodeID producer_id() const
{
return (_producer == nullptr) ? EmptyNodeID : _producer->id();
}
/** Returns sink node id
*
* @return Sink node id
*/
NodeID consumer_id() const
{
return (_consumer == nullptr) ? EmptyNodeID : _consumer->id();
}
/** Returns producer node
*
* @return Producer node
*/
INode *producer() const
{
return _producer;
}
/** Returns consumer node
*
* @return Consumer node
*/
INode *consumer() const
{
return _consumer;
}
/** Returns the index of the output that produces the result in the producer node
*
* @return Producer node output index
*/
unsigned int producer_idx() const
{
return _producer_idx;
}
/** Returns the index of the input that consumes the result in the consumer node
*
* @return Consumer node input index
*/
unsigned int consumer_idx() const
{
return _consumer_idx;
}
/** Returns the tensor associated with this edge
*
* @return Tensor id
*/
Tensor *tensor() const
{
return _tensor;
}
/** Returns the tensor id associated with this edge
*
* @return Tensor id
*/
TensorID tensor_id() const
{
return (_tensor == nullptr) ? NullTensorID : _tensor->id();
}
/** Bind the edge to another tensor
*
* @note If tensor is nullptr then nothing happens
*
* @param[in] tensor Tensor to bind the edge to
*/
void update_bound_tensor(Tensor *tensor)
{
_tensor = (tensor != nullptr) ? tensor : _tensor;
}
private:
friend class Graph;
private:
EdgeID _id;
INode *_producer;
INode *_consumer;
unsigned int _producer_idx;
unsigned int _consumer_idx;
Tensor *_tensor;
};
} // namespace graph
} // namespace arm_compute
#endif /* ARM_COMPUTE_GRAPH_EDGE_H */
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