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52e3db279a
this is a direct fix of the issue revealing the problem that leads to crash verification done with a patched icinga2 where the execution-order of the code lines of counter-parts involved in re-incrementing/decrementing Timer:Ptr is forced to be the one that leads to the obeserverd segfaults refs #6737
61 lines
1.2 KiB
C++
61 lines
1.2 KiB
C++
/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
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#ifndef TIMER_H
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#define TIMER_H
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#include "base/i2-base.hpp"
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#include "base/object.hpp"
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#include <boost/signals2.hpp>
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namespace icinga {
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class TimerHolder;
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/**
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* A timer that periodically triggers an event.
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*
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* @ingroup base
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*/
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class Timer final : public Object
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{
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public:
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DECLARE_PTR_TYPEDEFS(Timer);
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~Timer() override;
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static void Initialize();
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static void Uninitialize();
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static void InitializeThread();
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static void UninitializeThread();
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void SetInterval(double interval);
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double GetInterval() const;
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static void AdjustTimers(double adjustment);
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void Start();
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void Stop(bool wait = false);
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void Reschedule(double next = -1);
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double GetNext() const;
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boost::signals2::signal<void(const Timer * const&)> OnTimerExpired;
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private:
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double m_Interval{0}; /**< The interval of the timer. */
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double m_Next{0}; /**< When the next event should happen. */
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bool m_Started{false}; /**< Whether the timer is enabled. */
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bool m_Running{false}; /**< Whether the timer proc is currently running. */
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void Call();
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void InternalReschedule(bool completed, double next = -1);
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static void TimerThreadProc();
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friend class TimerHolder;
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};
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}
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#endif /* TIMER_H */
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