Scheduler.hh

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//
// Copyright (c) 2020 Fraunhofer Institute for Applied Information Technology (FIT)
//                    Network Research Group (NET)
//                    Schloss Birlinghoven, 53754 Sankt Augustin, GERMANY
//                    Contact: support@wiback.org
//
// This file is part of the SENF code tree.
// It is licensed under the 3-clause BSD License (aka New BSD License).
// See LICENSE.txt in the top level directory for details or visit
// https://opensource.org/licenses/BSD-3-Clause
//


#ifndef HH_SENF_Scheduler_Scheduler_
#define HH_SENF_Scheduler_Scheduler_ 1

// Custom includes
#include <boost/noncopyable.hpp>
#include <senf/Utils/Logger/TimeSource.hh>
#include "FdEvent.hh"
#include "TimerEvent.hh"
#include "SignalEvent.hh"
#include "IdleEvent.hh"
#include "EventHook.hh"

//#include "scheduler.mpp"
//-/////////////////////////////////////////////////////////////////////////////////////////////////

namespace senf {

namespace scheduler {

    void process();

    bool running();

    void terminate();

    void yield();

    ClockService::clock_type const & eventTime();

    ClockService::clock_type const & now();

    ClockService::clock_type nowDiff(ClockService::clock_type const & older);

    CyclicTimestamp const & eventTimestamp();
    
    void watchdogCallback(detail::FIFORunner::WatchdogCallback const & cb);

    void watchdogTimeout(unsigned ms);

    unsigned watchdogTimeout();

    unsigned watchdogEvents();

    void watchdogAbort(bool flag);

    bool watchdogAbort();

    void hiresTimers();

    void loresTimers();

    bool haveScalableHiresTimers();

    bool usingHiresTimers();

    void restart();

    bool empty();

    struct LogTimeSource : public senf::log::TimeSource
    {
        senf::log::time_type operator()() const;
    };

    class BlockSignals
        : boost::noncopyable
    {
    public:
        BlockSignals(bool initiallyBlocked=true);

        ~BlockSignals();                

        void block();                   
        void unblock();                 
        bool blocked() const;           

    private:
        bool blocked_;
        sigset_t allSigs_;
        sigset_t savedSigs_;
    };

}}

#define SENF_SCHEDULER_WATCHDOG_CHECKPOINT_SET()                                            \
        senf::scheduler::detail::FIFORunner::instance().watchdogCheckpoint(                 \
                __FILE__ ":" BOOST_PP_STRINGIZE(__LINE__));

#define SENF_SCHEDULER_WATCHDOG_CHECKPOINT_CLEAR()                                          \
        senf::scheduler::detail::FIFORunner::instance().watchdogCheckpoint(nullptr);

//-/////////////////////////////////////////////////////////////////////////////////////////////////
#include "Scheduler.cci"
//#include "Scheduler.ct"
//#include "Scheduler.cti"
#endif

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