X-Git-Url: https://git.dogcows.com/gitweb?a=blobdiff_plain;f=otk%2Ftimer.hh;h=7d3e726d224c464e0be69668d9d352dcd7e3a600;hb=4c71c71d57e87c5273e09976fbac5b3a2f83bc52;hp=610a02e6c8a10d24a0ab98b662aa8cf040b97093;hpb=b0a532db8adeb909fa2cd8e518ca6917a2d7df0a;p=chaz%2Fopenbox diff --git a/otk/timer.hh b/otk/timer.hh index 610a02e6..7d3e726d 100644 --- a/otk/timer.hh +++ b/otk/timer.hh @@ -1,4 +1,4 @@ -// -*- mode: C++; indent-tabs-mode: nil; -*- +// -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*- #ifndef __timer_hh #define __timer_hh @@ -17,56 +17,114 @@ extern "C" { namespace otk { -class OBTimerQueueManager; +class TimerQueueManager; -//! The data passed to the OBTimeoutHandler function. +//! The data passed to the TimeoutHandler function. /*! Note: this is a very useful place to put an object instance, and set the event handler to a static function in the same class. */ -typedef void *OBTimeoutData; -//! The type of function which can be set as the callback for an OBTimer firing -typedef void (*OBTimeoutHandler)(OBTimeoutData); +typedef void *TimeoutData; +//! The type of function which can be set as the callback for a Timer firing +typedef void (*TimeoutHandler)(TimeoutData); -class OBTimer { +//! A Timer class which will fire a function when its time elapses +class Timer { private: - OBTimerQueueManager *manager; - OBTimeoutHandler handler; - OBTimeoutData data; - bool timing, recur; - - timeval _start, _timeout; - - OBTimer(const OBTimer&); - OBTimer& operator=(const OBTimer&); + //! The manager which to add ourself to and remove ourself after we are done + TimerQueueManager *_manager; + //! The function to call when the time elapses + TimeoutHandler _handler; + //! The data which gets passed along to the TimeoutHandler + TimeoutData _data; + //! Determines if the timer is currently started + bool _timing; + //! When this is true, the timer will reset itself to fire again every time + bool _recur; + + //! The time at which the timer started + timeval _start; + //! The time at which the timer is going to fire + timeval _timeout; + + //! Disallows copying of Timer objects + Timer(const Timer&); + //! Disallows copying of Timer objects + Timer& operator=(const Timer&); public: - OBTimer(OBTimerQueueManager *m, OBTimeoutHandler h, OBTimeoutData d); - virtual ~OBTimer(); - - void fireTimeout(); - - inline bool isTiming() const { return timing; } - inline bool isRecurring() const { return recur; } - - inline const timeval &getTimeout() const { return _timeout; } - inline const timeval &getStartTime() const { return _start; } - - timeval timeRemaining(const timeval &tm) const; + //! Constructs a new Timer object + /*! + @param m The TimerQueueManager with which to associate. The manager + specified will be resposible for making this timer fire. + @param h The function to call when the timer fires + @param d The data to pass along to the function call when the timer fires + */ + Timer(TimerQueueManager *m, TimeoutHandler h, TimeoutData d); + //! Destroys the Timer object + virtual ~Timer(); + + //! Fires the timer, calling its TimeoutHandler + void fire(); + + //! Returns if the Timer is started and timing + inline bool timing() const { return _timing; } + //! Returns if the Timer is going to repeat + inline bool recurring() const { return _recur; } + + //! Gets the amount of time the Timer should last before firing + inline const timeval &timeout() const { return _timeout; } + //! Gets the time at which the Timer started + inline const timeval &startTime() const { return _start; } + + //! Gets the amount of time left before the Timer fires + timeval remainingTime(const timeval &tm) const; + //! Returns if the Timer is past its timeout time, and should fire bool shouldFire(const timeval &tm) const; - timeval endpoint() const; - inline void recurring(bool b) { recur = b; } + //! Gets the time at which the Timer will fire + timeval endTime() const; + + //! Sets the Timer to repeat or not + /*! + @param b If true, the timer is set to repeat; otherwise, it will fire only + once + */ + inline void setRecurring(bool b) { _recur = b; } + //! Sets the amount of time for the Timer to last in milliseconds + /*! + @param t The number of milliseconds the timer should last + */ void setTimeout(long t); + //! Sets the amount of time the Timer should last before firing + /*! + @param t The amount of time the timer should last + */ void setTimeout(const timeval &t); + //! Causes the timer to begin + /*! + The timer fires after the time in Timer::getTimeout has passed since this + function was called. + Calling this function while the timer is already started will cause it to + restart its countdown. + */ void start(); // manager acquires timer + //! Causes the timer to stop + /*! + The timer will no longer fire once this function has been called. + Calling this function more than once does not have any effect. + */ void stop(); // manager releases timer - void halt(); // halts the timer - bool operator<(const OBTimer& other) const - { return shouldFire(other.endpoint()); } + //! Determines if this Timer will fire before a second Timer object + /*! + @param other The second Timer with which to compare + @return true if this Timer will fire before 'other'; otherwise, false + */ + bool operator<(const Timer& other) const + { return shouldFire(other.endTime()); } }; }