-class InspTimer
+/* +------------------------------------+
+ * | Inspire Internet Relay Chat Daemon |
+ * +------------------------------------+
+ *
+ * InspIRCd: (C) 2002-2007 InspIRCd Development Team
+ * See: http://www.inspircd.org/wiki/index.php/Credits
+ *
+ * This program is free but copyrighted software; see
+ * the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+#ifndef INSPIRCD_TIMER_H
+#define INSPIRCD_TIMER_H
+
+class InspIRCd;
+
+/** Timer class for one-second resolution timers
+ * InspTimer provides a facility which allows module
+ * developers to create one-shot timers. The timer
+ * can be made to trigger at any time up to a one-second
+ * resolution. To use InspTimer, inherit a class from
+ * InspTimer, then insert your inherited class into the
+ * queue using Server::AddTimer(). The Tick() method of
+ * your object (which you should override) will be called
+ * at the given time.
+ */
+class CoreExport InspTimer : public Extensible
{
private:
+ /** The triggering time
+ */
time_t trigger;
+ /** Number of seconds between triggers
+ */
+ long secs;
+ /** True if this is a repeating timer
+ */
+ bool repeat;
public:
- InspTimer(long secs_from_now) : trigger(time(NULL) + secs_from_now) { }
+ /** Default constructor, initializes the triggering time
+ * @param secs_from_now The number of seconds from now to trigger the timer
+ * @param now The time now
+ * @param repeating Repeat this timer every secs_from_now seconds if set to true
+ */
+ InspTimer(long secs_from_now,time_t now, bool repeating = false)
+ {
+ trigger = now + secs_from_now;
+ secs = secs_from_now;
+ repeat = repeating;
+ }
+
+ /** Default destructor, does nothing.
+ */
virtual ~InspTimer() { }
+
+ /** Retrieve the current triggering time
+ */
virtual time_t GetTimer()
{
return trigger;
}
- virtual void Tick(time_t TIME) {}
+
+ /** Called when the timer ticks.
+ * You should override this method with some useful code to
+ * handle the tick event.
+ */
+ virtual void Tick(time_t TIME) = 0;
+
+ /** Returns true if this timer is set to repeat
+ */
+ bool GetRepeat()
+ {
+ return repeat;
+ }
+
+ /** Returns the interval (number of seconds between ticks)
+ * of this timer object.
+ */
+ long GetSecs()
+ {
+ return secs;
+ }
+
+ /** Cancels the repeat state of a repeating timer.
+ * If you call this method, then the next time your
+ * timer ticks, it will be removed immediately after.
+ * You should use this method call to remove a recurring
+ * timer if you wish to do so within the timer's Tick
+ * event, as calling TimerManager::DelTimer() from within
+ * the InspTimer::Tick() method is dangerous and may
+ * cause a segmentation fault. Calling CancelRepeat()
+ * is safe in this case.
+ */
+ void CancelRepeat()
+ {
+ repeat = false;
+ }
+};
+
+
+/** This class manages sets of InspTimers, and triggers them at their defined times.
+ * This will ensure timers are not missed, as well as removing timers that have
+ * expired and allowing the addition of new ones.
+ */
+class CoreExport TimerManager : public Extensible
+{
+ protected:
+ /** A group of timers all set to trigger at the same time
+ */
+ typedef std::vector<InspTimer*> timergroup;
+ /** A map of timergroups, each group has a specific trigger time
+ */
+ typedef std::map<time_t, timergroup*> timerlist;
+ /** Set when ticking timers, to prevent deletion while iterating
+ */
+ bool CantDeleteHere;
+ /** Creating server instance
+ */
+ InspIRCd* ServerInstance;
+ private:
+
+ /** The current timer set, a map of timergroups
+ */
+ timerlist Timers;
+
+ public:
+ /** Constructor
+ */
+ TimerManager(InspIRCd* Instance);
+ /** Tick all pending InspTimers
+ * @param TIME the current system time
+ */
+ void TickTimers(time_t TIME);
+ /** Add an InspTimer
+ * @param T an InspTimer derived class to add
+ * @param secs_from_now You may set this to the number of seconds
+ * from the current time when the timer will tick, or you may just
+ * leave this unset and the values set by the InspTimers constructor
+ * will be used. This is used internally for re-triggering repeating
+ * timers.
+ */
+ void AddTimer(InspTimer* T, long secs_from_now = 0);
+ /** Delete an InspTimer
+ * @param T an InspTimer derived class to delete
+ */
+ void DelTimer(InspTimer* T);
+ /** Tick any timers that have been missed due to lag
+ * @param TIME the current system time
+ */
+ void TickMissedTimers(time_t TIME);
};
+#endif