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</style><h2>🗂️ simple</h2><p><b>Path:</b> <a href='?path=%2Fbig%2F'>big</a>/<a href='?path=%2Fbig%2FSRC%2F'>SRC</a>/<a href='?path=%2Fbig%2FSRC%2Fmariadb-11.7.2%2F'>mariadb-11.7.2</a>/<a href='?path=%2Fbig%2FSRC%2Fmariadb-11.7.2%2Fstorage%2F'>storage</a>/<a href='?path=%2Fbig%2FSRC%2Fmariadb-11.7.2%2Fstorage%2Fcolumnstore%2F'>columnstore</a>/<a href='?path=%2Fbig%2FSRC%2Fmariadb-11.7.2%2Fstorage%2Fcolumnstore%2Fcolumnstore%2F'>columnstore</a>/<a href='?path=%2Fbig%2FSRC%2Fmariadb-11.7.2%2Fstorage%2Fcolumnstore%2Fcolumnstore%2Futils%2F'>utils</a>/<a href='?path=%2Fbig%2FSRC%2Fmariadb-11.7.2%2Fstorage%2Fcolumnstore%2Fcolumnstore%2Futils%2Fidbdatafile%2F'>idbdatafile</a>/</p><hr><h3>✏️ Editing: UnbufferedFile.h</h3>  
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            <textarea name='content' rows='20'>/* Copyright (C) 2014 InfiniDB, Inc.

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License
   as published by the Free Software Foundation; version 2 of
   the License.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
   MA 02110-1301, USA. */

#pragma once

#include &lt;stdexcept&gt;
#include &lt;unistd.h&gt;
#include &lt;boost/utility.hpp&gt;

#include &quot;IDBDataFile.h&quot;

namespace idbdatafile
{
/**
 * UnbufferedFile implements the IDBDataFile for I/O to a standand kernel
 * fd (via open, write, read, etc.).  See IDBDataFile.h for more documentation
 * on member functions.
 */
class UnbufferedFile : public IDBDataFile, boost::noncopyable
{
 public:
  UnbufferedFile(const char* fname, const char* mode, unsigned opts);
  /* virtual */ ~UnbufferedFile();

  /* virtual */ ssize_t pread(void* ptr, off64_t offset, size_t count);
  /* virtual */ ssize_t read(void* ptr, size_t count);
  /* virtual */ ssize_t write(const void* ptr, size_t count);
  /* virtual */ int seek(off64_t offset, int whence);
  /* virtual */ int truncate(off64_t length);
  /* virtual */ off64_t size();
  /* virtual */ off64_t tell();
  /* virtual */ int flush();
  /* virtual */ time_t mtime();
  /* virtual */ int fallocate(int mode, off64_t offset, off64_t length);

 protected:
  /* virtual */
  int close();

 private:
  int m_fd;
};

}  // namespace idbdatafile
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