d6407c3746
The SparsePageDMatrix or external memory DMatrix reads data from the file IO rather than load it into RAM.
27 lines
522 B
C++
27 lines
522 B
C++
#include "./helpers.h"
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std::string TempFileName() {
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return std::tmpnam(nullptr);
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}
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bool FileExists(const std::string name) {
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struct stat st;
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return stat(name.c_str(), &st) == 0;
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}
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long GetFileSize(const std::string filename) {
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struct stat st;
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stat(filename.c_str(), &st);
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return st.st_size;
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}
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std::string CreateSimpleTestData() {
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std::string tmp_file = TempFileName();
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std::ofstream fo;
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fo.open(tmp_file);
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fo << "0 0:0 1:10 2:20\n";
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fo << "1 0:0 3:30 4:40\n";
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fo.close();
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return tmp_file;
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}
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