mmap_file.h

/***************************************************************************
 *  include/stxxl/bits/io/mmap_file.h
 *
 *  Part of the STXXL. See http://stxxl.sourceforge.net
 *
 *  Copyright (C) 2002 Roman Dementiev <[email protected]>
 *
 *  Distributed under the Boost Software License, Version 1.0.
 *  (See accompanying file LICENSE_1_0.txt or copy at
 *  http://www.boost.org/LICENSE_1_0.txt)
 **************************************************************************/

#ifndef STXXL_MMAP_FILE_HEADER
#define STXXL_MMAP_FILE_HEADER

#ifndef STXXL_HAVE_MMAP_FILE
#ifdef STXXL_BOOST_CONFIG
 #include <boost/config.hpp>
#endif

#ifndef BOOST_MSVC
// mmap call does not exist in Windows
 #define STXXL_HAVE_MMAP_FILE 1
#else
 #define STXXL_HAVE_MMAP_FILE 0
#endif
#endif

#if STXXL_HAVE_MMAP_FILE

#include <sys/mman.h>

#include <stxxl/bits/io/ufs_file_base.h>
#include <stxxl/bits/io/disk_queued_file.h>


__STXXL_BEGIN_NAMESPACE


class mmap_file : public ufs_file_base, public disk_queued_file
{
public:
    inline mmap_file(const std::string & filename, int mode, int queue_id = DEFAULT_QUEUE, int allocator_id = NO_ALLOCATOR) :
        ufs_file_base(filename, mode), disk_queued_file(queue_id, allocator_id)
    { }
    void serve(const request * req) throw (io_error);
    const char * io_type() const;
};


__STXXL_END_NAMESPACE

#endif  // #if STXXL_HAVE_MMAP_FILE

#endif  // !STXXL_MMAP_FILE_HEADER