linuxaio_file.cpp

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/***************************************************************************
 *  foxxll/io/linuxaio_file.cpp
 *
 *  Part of FOXXLL. See http://foxxll.org
 *
 *  Copyright (C) 2011 Johannes Singler <[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)
 **************************************************************************/

#include <foxxll/io/linuxaio_file.hpp>

#if FOXXLL_HAVE_LINUXAIO_FILE

#include <foxxll/io/disk_queues.hpp>
#include <foxxll/io/linuxaio_request.hpp>

namespace foxxll {

request_ptr linuxaio_file::aread(
    void* buffer, offset_type offset, size_type bytes,
    const completion_handler& on_complete)
{
    request_ptr req = tlx::make_counting<linuxaio_request>(
            on_complete, this, buffer, offset, bytes, request::READ
        );

    disk_queues::get_instance()->add_request(req, get_queue_id());

    return req;
}

request_ptr linuxaio_file::awrite(
    void* buffer, offset_type offset, size_type bytes,
    const completion_handler& on_complete)
{
    request_ptr req = tlx::make_counting<linuxaio_request>(
            on_complete, this, buffer, offset, bytes, request::WRITE
        );

    disk_queues::get_instance()->add_request(req, get_queue_id());

    return req;
}

void linuxaio_file::serve(void* buffer, offset_type offset, size_type bytes,
                          request::read_or_write op)
{
    // req need not be an linuxaio_request
    if (op == request::READ)
        aread(buffer, offset, bytes)->wait();
    else
        awrite(buffer, offset, bytes)->wait();
}

const char* linuxaio_file::io_type() const
{
    return "linuxaio";
}

} // namespace foxxll

#endif // #if FOXXLL_HAVE_LINUXAIO_FILE

/**************************************************************************/