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/*
* Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "coco/IR/Data.h"
#include <nncc/core/ADT/kernel/NCHWLayout.h>
#include <nncc/core/ADT/kernel/Overlay.h>
#include <stdex/Memory.h>
#include <map>
using namespace nncc::core::ADT;
using stdex::make_unique;
namespace
{
class BlobContext
{
public:
void allocate(const coco::Bag *b, uint32_t elemsize)
{
auto buffer = make_unique<std::vector<uint8_t>>();
buffer->resize(b->size() * elemsize);
_data[b] = std::move(buffer);
}
void release(const coco::Bag *b) { _data.erase(b); }
public:
uint8_t *at(const coco::Bag *b)
{
auto it = _data.find(b);
if (it != _data.end())
{
return it->second->data();
}
return nullptr;
}
public:
uint32_t size(const coco::Bag *b) const
{
auto it = _data.find(b);
if (it != _data.end())
{
return it->second->size();
}
return 0;
}
private:
std::map<const coco::Bag *, std::unique_ptr<std::vector<uint8_t>>> _data;
};
}
namespace
{
template <typename T> class KernelOverlay : public kernel::Reader<T>, public kernel::Accessor<T>
{
public:
KernelOverlay(T *base, const coco::KernelObject *object) : _base{base}, _object{object}
{
// DO NOTHING
}
public:
T at(uint32_t nth, uint32_t ch, uint32_t row, uint32_t col) const override
{
assert(_object->layout() != nullptr);
auto offset = _object->layout()->at(nth, ch, row, col);
return *(_base + offset.value());
}
public:
T &at(uint32_t nth, uint32_t ch, uint32_t row, uint32_t col) override
{
assert(_object->layout() != nullptr);
auto offset = _object->layout()->at(nth, ch, row, col);
return *(_base + offset.value());
}
private:
T *_base;
const coco::KernelObject *_object;
};
} // namespace
namespace
{
template <typename T> class PlainWeightContextImpl final : public coco::PlainWeightContext<T>
{
public:
PlainWeightContextImpl(BlobContext *blob) : _blob{blob}
{
// DO NOTHING
}
public:
PlainWeightContextImpl(const PlainWeightContextImpl &) = delete;
PlainWeightContextImpl(PlainWeightContextImpl &&) = delete;
public:
coco::Span<T> allocate(const coco::Bag *bag) override
{
assert(bag != nullptr);
_blob->allocate(bag, sizeof(T));
return weight(bag);
}
coco::Span<T> weight(const coco::Bag *b) override
{
// TODO Check type later
if (auto data = _blob->at(b))
{
uint32_t byte_size = _blob->size(b);
assert(byte_size % sizeof(T) == 0);
uint32_t elem_size = static_cast<uint32_t>(byte_size / sizeof(T));
return coco::Span<T>{reinterpret_cast<T *>(data), elem_size};
}
return coco::Span<T>{nullptr, 0};
}
public:
std::unique_ptr<kernel::Accessor<T>> access(const coco::KernelObject *o) override
{
auto b = o->bag();
assert(b != nullptr);
if (auto base = reinterpret_cast<T *>(_blob->at(b)))
{
return make_unique<KernelOverlay<T>>(base, o);
}
return nullptr;
}
public:
std::unique_ptr<kernel::Reader<T>> read(const coco::KernelObject *o) const override
{
auto b = o->bag();
assert(b != nullptr);
if (auto base = reinterpret_cast<T *>(_blob->at(b)))
{
return make_unique<KernelOverlay<T>>(base, o);
}
return nullptr;
}
private:
BlobContext *const _blob;
};
} // namespace
namespace
{
struct DataImpl final : public coco::Data
{
std::unique_ptr<BlobContext> _blob;
std::unique_ptr<PlainWeightContextImpl<float>> _fp32;
bool allocated(const coco::Bag *b) const override { return _blob->at(b) != nullptr; }
void release(const coco::Bag *b) override
{
assert(allocated(b));
_blob->release(b);
}
coco::PlainWeightContext<float> *f32(void) override { return _fp32.get(); }
const coco::PlainWeightContext<float> *f32(void) const override { return _fp32.get(); }
};
} // namespace
namespace coco
{
std::unique_ptr<Data> Data::create(void)
{
auto blob = make_unique<BlobContext>();
auto fp32 = make_unique<PlainWeightContextImpl<float>>(blob.get());
auto data = make_unique<DataImpl>();
data->_blob = std::move(blob);
data->_fp32 = std::move(fp32);
// GCC 4.9 tries to copy data (while GCC 6.X doesn't)
return std::move(data);
}
} // namespace coco
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