/* 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. */ #ifndef UNBUFFEREDFILE_H_ #define UNBUFFEREDFILE_H_ #include <stdexcept> #include <unistd.h> #include <boost/utility.hpp> #include "IDBDataFile.h" 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: #ifdef _MSC_VER HANDLE m_fd; #else int m_fd; #endif }; } #endif /* UNBUFFEREDFILE_H_ */