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//
// Copyright © 2017 Arm Ltd. All rights reserved.
// SPDX-License-Identifier: MIT
//
#include "SubgraphView.hpp"
#include "Graph.hpp"
#include <armnn/utility/IgnoreUnused.hpp>
#include <armnn/utility/NumericCast.hpp>
#include <armnn/utility/PolymorphicDowncast.hpp>
#include <utility>
namespace armnn
{
namespace
{
template <class C>
void AssertIfNullsOrDuplicates(const C& container, const std::string& errorMessage)
{
using T = typename C::value_type;
std::unordered_set<T> duplicateSet;
std::for_each(container.begin(), container.end(), [&duplicateSet, &errorMessage](const T& i)
{
// Ignore unused for release builds
IgnoreUnused(errorMessage);
// Check if the item is valid
ARMNN_ASSERT_MSG(i, errorMessage.c_str());
// Check if a duplicate has been found
ARMNN_ASSERT_MSG(duplicateSet.find(i) == duplicateSet.end(), errorMessage.c_str());
duplicateSet.insert(i);
});
}
} // anonymous namespace
SubgraphView::SubgraphView(Graph& graph)
: m_InputSlots{}
, m_OutputSlots{}
, m_Layers(graph.begin(), graph.end())
{
ArrangeBySortOrder();
CheckSubgraph();
}
SubgraphView::SubgraphView(InputSlots&& inputs, OutputSlots&& outputs, Layers&& layers)
: m_InputSlots{inputs}
, m_OutputSlots{outputs}
, m_Layers{layers}
{
ArrangeBySortOrder();
CheckSubgraph();
}
SubgraphView::SubgraphView(const SubgraphView& subgraph)
: m_InputSlots(subgraph.m_InputSlots.begin(), subgraph.m_InputSlots.end())
, m_OutputSlots(subgraph.m_OutputSlots.begin(), subgraph.m_OutputSlots.end())
, m_Layers(subgraph.m_Layers.begin(), subgraph.m_Layers.end())
{
ArrangeBySortOrder();
CheckSubgraph();
}
SubgraphView::SubgraphView(SubgraphView&& subgraph)
: m_InputSlots(std::move(subgraph.m_InputSlots))
, m_OutputSlots(std::move(subgraph.m_OutputSlots))
, m_Layers(std::move(subgraph.m_Layers))
{
ArrangeBySortOrder();
CheckSubgraph();
}
SubgraphView::SubgraphView(IConnectableLayer* layer)
: m_InputSlots{}
, m_OutputSlots{}
, m_Layers{PolymorphicDowncast<Layer*>(layer)}
{
unsigned int numInputSlots = layer->GetNumInputSlots();
m_InputSlots.resize(numInputSlots);
for (unsigned int i = 0; i < numInputSlots; i++)
{
m_InputSlots.at(i) = PolymorphicDowncast<InputSlot*>(&(layer->GetInputSlot(i)));
}
unsigned int numOutputSlots = layer->GetNumOutputSlots();
m_OutputSlots.resize(numOutputSlots);
for (unsigned int i = 0; i < numOutputSlots; i++)
{
m_OutputSlots.at(i) = PolymorphicDowncast<OutputSlot*>(&(layer->GetOutputSlot(i)));
}
CheckSubgraph();
}
SubgraphView& SubgraphView::operator=(SubgraphView&& other)
{
m_InputSlots = std::move(other.m_InputSlots);
m_OutputSlots = std::move(other.m_OutputSlots);
m_Layers = std::move(other.m_Layers);
CheckSubgraph();
return *this;
}
void SubgraphView::CheckSubgraph()
{
// Check for invalid or duplicate input slots
AssertIfNullsOrDuplicates(m_InputSlots, "Sub-graphs cannot contain null or duplicate input slots");
// Check for invalid or duplicate output slots
AssertIfNullsOrDuplicates(m_OutputSlots, "Sub-graphs cannot contain null or duplicate output slots");
// Check for invalid or duplicate layers
AssertIfNullsOrDuplicates(m_Layers, "Sub-graphs cannot contain null or duplicate layers");
}
const SubgraphView::InputSlots& SubgraphView::GetInputSlots() const
{
return m_InputSlots;
}
const SubgraphView::OutputSlots& SubgraphView::GetOutputSlots() const
{
return m_OutputSlots;
}
const InputSlot* SubgraphView::GetInputSlot(unsigned int index) const
{
return m_InputSlots.at(index);
}
InputSlot* SubgraphView::GetInputSlot(unsigned int index)
{
return m_InputSlots.at(index);
}
const OutputSlot* SubgraphView::GetOutputSlot(unsigned int index) const
{
return m_OutputSlots.at(index);
}
OutputSlot* SubgraphView::GetOutputSlot(unsigned int index)
{
return m_OutputSlots.at(index);
}
unsigned int SubgraphView::GetNumInputSlots() const
{
return armnn::numeric_cast<unsigned int>(m_InputSlots.size());
}
unsigned int SubgraphView::GetNumOutputSlots() const
{
return armnn::numeric_cast<unsigned int>(m_OutputSlots.size());
}
const SubgraphView::Layers& SubgraphView::GetLayers() const
{
return m_Layers;
}
SubgraphView::Iterator SubgraphView::begin()
{
return m_Layers.begin();
}
SubgraphView::Iterator SubgraphView::end()
{
return m_Layers.end();
}
SubgraphView::ConstIterator SubgraphView::begin() const
{
return m_Layers.begin();
}
SubgraphView::ConstIterator SubgraphView::end() const
{
return m_Layers.end();
}
SubgraphView::ConstIterator SubgraphView::cbegin() const
{
return begin();
}
SubgraphView::ConstIterator SubgraphView::cend() const
{
return end();
}
void SubgraphView::Clear()
{
m_InputSlots.clear();
m_OutputSlots.clear();
m_Layers.clear();
}
void SubgraphView::ArrangeBySortOrder()
{
using LayerList = std::list<Layer*>;
auto compareLayerPriority = [](const LayerList::value_type& layerA, const LayerList::value_type& layerB)
{
return layerA->GetPriority() < layerB->GetPriority();
};
m_Layers.sort(compareLayerPriority);
}
} // namespace armnn
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