Dogcows Code - chaz/openbox/blob - otk/timer.hh

   1 // -*- mode: C++; indent-tabs-mode: nil; -*-
   2 #ifndef   __timer_hh
   3 #define   __timer_hh
   4
   5 extern "C" {
   6 #ifdef    TIME_WITH_SYS_TIME
   7 #  include <sys/time.h>
   8 #  include <time.h>
   9 #else // !TIME_WITH_SYS_TIME
  10 #  ifdef    HAVE_SYS_TIME_H
  11 #    include <sys/time.h>
  12 #  else // !HAVE_SYS_TIME_H
  13 #    include <time.h>
  14 #  endif // HAVE_SYS_TIME_H
  15 #endif // TIME_WITH_SYS_TIME
  16 }
  17
  18 namespace otk {
  19
  20 class OBTimerQueueManager;
  21
  22 //! The data passed to the OBTimeoutHandler function.
  23 /*!
  24   Note: this is a very useful place to put an object instance, and set the
  25   event handler to a static function in the same class.
  26 */
  27 typedef void *OBTimeoutData;
  28 //! The type of function which can be set as the callback for an OBTimer firing
  29 typedef void (*OBTimeoutHandler)(OBTimeoutData);
  30
  31 class OBTimer {
  32 private:
  33   OBTimerQueueManager *manager;
  34   OBTimeoutHandler handler;
  35   OBTimeoutData data;
  36   bool timing, recur;
  37
  38   timeval _start, _timeout;
  39
  40   OBTimer(const OBTimer&);
  41   OBTimer& operator=(const OBTimer&);
  42
  43 public:
  44   OBTimer(OBTimerQueueManager *m, OBTimeoutHandler h, OBTimeoutData d);
  45   virtual ~OBTimer();
  46
  47   void fireTimeout();
  48
  49   inline bool isTiming() const { return timing; }
  50   inline bool isRecurring() const { return recur; }
  51
  52   inline const timeval &getTimeout() const { return _timeout; }
  53   inline const timeval &getStartTime() const { return _start; }
  54
  55   timeval timeRemaining(const timeval &tm) const;
  56   bool shouldFire(const timeval &tm) const;
  57   timeval endpoint() const;
  58
  59   inline void recurring(bool b) { recur = b; }
  60
  61   void setTimeout(long t);
  62   void setTimeout(const timeval &t);
  63
  64   void start();  // manager acquires timer
  65   void stop();   // manager releases timer
  66   void halt();   // halts the timer
  67
  68   bool operator<(const OBTimer& other) const
  69   { return shouldFire(other.endpoint()); }
  70 };
  71
  72 }
  73
  74 #endif // __timer_hh