29c6ad943a
* Set default dtor for SimpleDMatrix to initialize default copy ctor, which is deleted due to unique ptr. * Remove commented code. * Remove warning for calling host function (std::max). * Remove warning for initialization order. * Remove warning for unused variables.
62 lines
1.6 KiB
C++
62 lines
1.6 KiB
C++
/*!
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* Copyright 2015 by Contributors
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* \file simple_dmatrix.h
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* \brief In-memory version of DMatrix.
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* \author Tianqi Chen
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*/
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#ifndef XGBOOST_DATA_SIMPLE_DMATRIX_H_
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#define XGBOOST_DATA_SIMPLE_DMATRIX_H_
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#include <xgboost/base.h>
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#include <xgboost/data.h>
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#include <memory>
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#include <string>
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namespace xgboost {
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namespace data {
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// Used for single batch data.
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class SimpleDMatrix : public DMatrix {
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public:
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template <typename AdapterT>
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explicit SimpleDMatrix(AdapterT* adapter, float missing, int nthread);
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explicit SimpleDMatrix(dmlc::Stream* in_stream);
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~SimpleDMatrix() override = default;
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void SaveToLocalFile(const std::string& fname);
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MetaInfo& Info() override;
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const MetaInfo& Info() const override;
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bool SingleColBlock() const override { return true; }
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/*! \brief magic number used to identify SimpleDMatrix binary files */
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static const int kMagic = 0xffffab01;
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private:
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BatchSet<SparsePage> GetRowBatches() override;
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BatchSet<CSCPage> GetColumnBatches() override;
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BatchSet<SortedCSCPage> GetSortedColumnBatches() override;
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BatchSet<EllpackPage> GetEllpackBatches(const BatchParam& param) override;
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MetaInfo info;
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SparsePage sparse_page_; // Primary storage type
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std::unique_ptr<CSCPage> column_page_;
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std::unique_ptr<SortedCSCPage> sorted_column_page_;
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std::unique_ptr<EllpackPage> ellpack_page_;
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BatchParam batch_param_;
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bool EllpackExists() const override {
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return static_cast<bool>(ellpack_page_);
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}
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bool SparsePageExists() const override {
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return true;
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}
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};
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} // namespace data
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} // namespace xgboost
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#endif // XGBOOST_DATA_SIMPLE_DMATRIX_H_
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