[TREE] Enable updater registry

old_src/utils/io.h

@@ -1,59 +0,0 @@
-/*!
- * Copyright 2014 by Contributors
- * \file io.h
- * \brief general stream interface for serialization, I/O
- * \author Tianqi Chen
- */
-
-#ifndef XGBOOST_UTILS_IO_H_
-#define XGBOOST_UTILS_IO_H_
-#include <cstdio>
-#include <vector>
-#include <string>
-#include <cstring>
-#include "./utils.h"
-#include "../sync/sync.h"
-
-namespace xgboost {
-namespace utils {
-// reuse the definitions of streams
-typedef rabit::Stream IStream;
-typedef rabit::utils::SeekStream ISeekStream;
-typedef rabit::utils::MemoryFixSizeBuffer MemoryFixSizeBuffer;
-typedef rabit::utils::MemoryBufferStream MemoryBufferStream;
-
-/*! \brief implementation of file i/o stream */
-class FileStream : public ISeekStream {
- public:
-  explicit FileStream(std::FILE *fp) : fp(fp) {}
-  FileStream(void) {
-    this->fp = NULL;
-  }
-  virtual size_t Read(void *ptr, size_t size) {
-    return std::fread(ptr, size, 1, fp);
-  }
-  virtual void Write(const void *ptr, size_t size) {
-    Check(std::fwrite(ptr, size, 1, fp) == 1, "FileStream::Write: fwrite error!");
-  }
-  virtual void Seek(size_t pos) {
-    std::fseek(fp, static_cast<long>(pos), SEEK_SET); // NOLINT(*)
-  }
-  virtual size_t Tell(void) {
-    return std::ftell(fp);
-  }
-  virtual bool AtEnd(void) const {
-    return std::feof(fp) != 0;
-  }
-  inline void Close(void) {
-    if (fp != NULL) {
-      std::fclose(fp); fp = NULL;
-    }
-  }
-
- private:
-  std::FILE *fp;
-};
-}  // namespace utils
-}  // namespace xgboost
-#include "./base64-inl.h"
-#endif  // XGBOOST_UTILS_IO_H_