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ufs_file_base.h

00001 /***************************************************************************
00002  *  include/stxxl/bits/io/ufs_file_base.h
00003  *
00004  *  UNIX file system file base
00005  *
00006  *  Part of the STXXL. See http://stxxl.sourceforge.net
00007  *
00008  *  Copyright (C) 2002 Roman Dementiev <dementiev@mpi-sb.mpg.de>
00009  *
00010  *  Distributed under the Boost Software License, Version 1.0.
00011  *  (See accompanying file LICENSE_1_0.txt or copy at
00012  *  http://www.boost.org/LICENSE_1_0.txt)
00013  **************************************************************************/
00014 
00015 #ifndef STXXL_UFSFILEBASE_HEADER
00016 #define STXXL_UFSFILEBASE_HEADER
00017 
00018 #include <stxxl/bits/io/file.h>
00019 #include <stxxl/bits/io/request.h>
00020 
00021 
00022 __STXXL_BEGIN_NAMESPACE
00023 
00026 
00028 class ufs_file_base : public virtual file
00029 {
00030 protected:
00031     mutex fd_mutex;        // sequentialize function calls involving file_des
00032     int file_des;          // file descriptor
00033     int mode_;             // open mode
00034     const std::string filename;
00035     ufs_file_base(const std::string & filename, int mode);
00036     offset_type _size();
00037     void close();
00038 
00039 public:
00040     ~ufs_file_base();
00041     offset_type size();
00042     void set_size(offset_type newsize);
00043     void lock();
00044     const char * io_type() const;
00045     void remove();
00046 };
00047 
00049 
00050 __STXXL_END_NAMESPACE
00051 
00052 #endif // !STXXL_UFSFILEBASE_HEADER

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