// $Id$
//
// Copyright (C) 2008
// Fraunhofer Institute for Open Communication Systems (FOKUS)
// Competence Center NETwork research (NET), St. Augustin, GERMANY
//     Stefan Bund <g0dil@berlios.de>
//
// 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; either version 2 of the License, or
// (at your option) any later version.
//
// 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.,
// 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

/** \file
    \brief FIFORunner inline non-template implementation */

//#include "FIFORunner.ih"

// Custom includes
#ifdef SENF_DEBUG
#include <sstream>
#include <senf/Utils/Backtrace.hh>
#endif

#define prefix_ inline
//-/////////////////////////////////////////////////////////////////////////////////////////////////

//-/////////////////////////////////////////////////////////////////////////////////////////////////
//  senf::scheduler::detail::FIFORunner::TaskInfo

prefix_ senf::scheduler::detail::FIFORunner::TaskInfo::TaskInfo(std::string const & name,
                                                                Priority priority)
    : Event(name), runnable_ (false), priority_ (priority)
{
#ifdef SENF_BACKTRACE
    std::stringstream ss;
    senf::backtrace(ss, 32);
    backtrace_ = ss.str();
#endif
}

prefix_ senf::scheduler::detail::FIFORunner::TaskInfo::~TaskInfo()
{}

prefix_ void senf::scheduler::detail::FIFORunner::TaskInfo::setRunnable()
{
    runnable_ = true;
}

prefix_ void senf::scheduler::detail::FIFORunner::TaskInfo::run()
{
    countRun();
    // Be sure to run v_run last since the callback may destroy this instance
    v_run();
}

prefix_ bool senf::scheduler::detail::FIFORunner::TaskInfo::runnable()
    const
{
    return runnable_;
}

prefix_ bool senf::scheduler::detail::FIFORunner::TaskInfo::v_enabled()
    const
{
    return TaskListBase::linked();
}

//-/////////////////////////////////////////////////////////////////////////////////////////////////
// senf::scheduler::detail::FIFORunner::NullTask

prefix_ senf::scheduler::detail::FIFORunner::NullTask::NullTask()
    : senf::scheduler::detail::FIFORunner::TaskInfo ("<null>")
{}

prefix_ senf::scheduler::detail::FIFORunner::NullTask::~NullTask()
{
    if (TaskListBase::linked())
        FIFORunner::instance().dequeue(this);
}

prefix_ void senf::scheduler::detail::FIFORunner::NullTask::v_run()
{}

prefix_ char const * senf::scheduler::detail::FIFORunner::NullTask::v_type()
    const
{
    return 0;
}

prefix_ std::string senf::scheduler::detail::FIFORunner::NullTask::v_info()
    const
{
    return "";
}

//-/////////////////////////////////////////////////////////////////////////////////////////////////
// senf::scheduler::detail::FIFORunner

prefix_ void senf::scheduler::detail::FIFORunner::enqueue(TaskInfo * task)
{
    tasks_.insert(priorityEnd(task->priority_), *task);
}

prefix_ void senf::scheduler::detail::FIFORunner::taskTimeout(unsigned ms)
{
    watchdogMs_ = ms;
    if (watchdogRunning_)
        startWatchdog();
}

prefix_ unsigned senf::scheduler::detail::FIFORunner::taskTimeout()
    const
{
    return watchdogMs_;
}

prefix_ void senf::scheduler::detail::FIFORunner::abortOnTimeout(bool flag)
{
    watchdogAbort_ = flag;
}

prefix_ bool senf::scheduler::detail::FIFORunner::abortOnTimeout()
    const
{
    return watchdogAbort_;
}

prefix_ unsigned senf::scheduler::detail::FIFORunner::hangCount()
{
    unsigned hc (hangCount_);
    hangCount_ = 0;
    return hc;
}

prefix_ senf::scheduler::detail::FIFORunner::iterator
senf::scheduler::detail::FIFORunner::begin()
    const
{
    // We need to filter out elements with e.type() == 0 ... the NullTask temporarily added is such
    // an element and must be skipped.
    return boost::make_filter_iterator(
        EventManager::IteratorFilter(), tasks_.begin(), tasks_.end());
}

prefix_ senf::scheduler::detail::FIFORunner::iterator senf::scheduler::detail::FIFORunner::end()
    const
{
    return boost::make_filter_iterator(
        EventManager::IteratorFilter(), tasks_.end(), tasks_.end());
}

prefix_ void senf::scheduler::detail::FIFORunner::yield()
{
    yield_ = true;
}

//-/////////////////////////////////////////////////////////////////////////////////////////////////
#undef prefix_


// Local Variables:
// mode: c++
// fill-column: 100
// comment-column: 40
// c-file-style: "senf"
// indent-tabs-mode: nil
// ispell-local-dictionary: "american"
// compile-command: "scons -u test"
// End: