mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-04-18 21:44:02 +03:00
67 lines
1.9 KiB
C++
67 lines
1.9 KiB
C++
/* 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_ */
|