103 lines
3.0 KiB
C++
103 lines
3.0 KiB
C++
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#ifndef MANUAL_RUNTIME_HPP_IPFSK6ZA
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#define MANUAL_RUNTIME_HPP_IPFSK6ZA
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#include <vanetza/common/runtime.hpp>
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#include <boost/multi_index_container.hpp>
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#include <boost/multi_index/hashed_index.hpp>
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#include <boost/multi_index/member.hpp>
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#include <boost/multi_index/ordered_index.hpp>
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namespace vanetza
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{
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/**
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* ManualRuntime is a manually triggered Runtime implementation.
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* Ensure that time progress is triggered monotonically!
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*/
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class ManualRuntime : public Runtime
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{
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public:
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ManualRuntime() = default;
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/**
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* Create runtime
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* \param init initialization value of internal clock
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*/
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explicit ManualRuntime(Clock::time_point init);
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/**
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* Trigger absolute time progress
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*
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* All expired callbacks will be invoked
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* \param tp new time point, has to be greater than now
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*/
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void trigger(Clock::time_point tp);
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/**
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* Trigger relative time progress
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*
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* All expired callbacks will be invoked
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* \param d advance time by this duration
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*/
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void trigger(Clock::duration d);
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/**
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* Reset runtime
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*
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* Drops all scheduled callbacks and resets internal clock
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* \param tp new time point
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*/
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void reset(Clock::time_point tp);
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/**
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* Get time point of next scheduled event
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* \note time point might belong to an expired event, i.e. next() < now()
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* \return time point of next event or time_point::max if none
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*/
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Clock::time_point next() const;
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// Runtime interface (see header there for details)
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void schedule(Clock::time_point, const Callback&, const void* = nullptr) override;
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void schedule(Clock::duration, const Callback&, const void* = nullptr) override;
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void cancel(const void* scope) override;
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Clock::time_point now() const override;
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private:
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struct ScheduledCallback
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{
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ScheduledCallback(Clock::time_point tp, const Callback& cb, const void* scope) :
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deadline(tp), callback(cb), scope(scope) {}
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ScheduledCallback(const ScheduledCallback&) = delete;
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ScheduledCallback& operator=(const ScheduledCallback&) = delete;
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ScheduledCallback(ScheduledCallback&&) = default;
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ScheduledCallback& operator=(ScheduledCallback&&) = default;
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Clock::time_point deadline;
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Callback callback;
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const void* scope;
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};
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struct by_deadline {};
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using time_index = boost::multi_index::ordered_non_unique<
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boost::multi_index::tag<by_deadline>,
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boost::multi_index::member<ScheduledCallback, Clock::time_point, &ScheduledCallback::deadline>>;
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struct by_scope {};
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using scope_index = boost::multi_index::hashed_non_unique<
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boost::multi_index::tag<by_scope>,
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boost::multi_index::member<ScheduledCallback, const void*, &ScheduledCallback::scope>>;
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using queue_type = boost::multi_index_container<ScheduledCallback,
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boost::multi_index::indexed_by<time_index, scope_index>>;
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void trigger();
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Clock::time_point m_now;
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queue_type m_queue;
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};
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} // namespace vanetza
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#endif /* MANUAL_RUNTIME_HPP_IPFSK6ZA */
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