syscall_file.h

/***************************************************************************
 *  include/stxxl/bits/io/syscall_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_SYSCALL_FILE_HEADER
#define STXXL_SYSCALL_FILE_HEADER

#include <stxxl/bits/io/ufs_file.h>
#include <stxxl/bits/common/debug.h>


__STXXL_BEGIN_NAMESPACE


class syscall_file : public ufs_file_base
{
public:
    syscall_file(
        const std::string & filename,
        int mode,
        int disk = -1);
    request_ptr aread(
        void * buffer,
        stxxl::int64 pos,
        size_t bytes,
        completion_handler on_cmpl);
    request_ptr awrite(
        void * buffer,
        stxxl::int64 pos,
        size_t bytes,
        completion_handler on_cmpl);
};

class syscall_request : public ufs_request_base
{
    friend class syscall_file;

protected:
    syscall_request(
        syscall_file * f,
        void * buf,
        stxxl::int64 off,
        size_t b,
        request_type t,
        completion_handler on_cmpl);
    void serve();

public:
    const char * io_type();
};


__STXXL_END_NAMESPACE

#endif // !STXXL_SYSCALL_FILE_HEADER