src/FbTk/Timer.hh (raw)
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// Timer.hh for FbTk - Fluxbox Toolkit // Copyright (c) 2002-2003 Henrik Kinnunen (fluxgen at fluxbox dot org) // // Timer.hh for Blackbox - An X11 Window Manager // Copyright (c) 1997 - 2000 Brad Hughes (bhughes at tcac.net) // // Permission is hereby granted, free of charge, to any person obtaining a // copy of this software and associated documentation files (the "Software"), // to deal in the Software without restriction, including without limitation // the rights to use, copy, modify, merge, publish, distribute, sublicense, // and/or sell copies of the Software, and to permit persons to whom the // Software is furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER // DEALINGS IN THE SOFTWARE. #ifndef FBTK_TIMER_HH #define FBTK_TIMER_HH #include "RefCount.hh" #include "Command.hh" #ifdef HAVE_CTIME #include <ctime> #else #include <time.h> #endif #include <list> #include <string> #ifdef HAVE_CONFIG_H #include "config.h" #endif //HAVE_CONFIG_H #ifdef HAVE_INTTYPES_H #include <inttypes.h> #endif // HAVE_INTTYPES_H #include <sys/types.h> #include <sys/time.h> #include <unistd.h> namespace FbTk { /** Handles Timeout */ class Timer { public: Timer(); explicit Timer(const RefCount<Slot<void> > &handler); virtual ~Timer(); void fireOnce(bool once) { m_once = once; } /// set timeout void setTimeout(time_t val); /// set timeout void setTimeout(const timeval &val); void setTimeout(unsigned int secs, unsigned int usecs); void setCommand(const RefCount<Slot<void> > &cmd); template<typename Functor> void setFunctor(const Functor &functor) { setCommand(RefCount<Slot<void> >(new SlotImpl<Functor, void>(functor))); } void setInterval(int val) { m_interval = val; } /// start timing void start(); /// stop timing void stop(); /// update all timers static void updateTimers(int file_descriptor); int isTiming() const { return m_timing; } int getInterval() const { return m_interval; } int doOnce() const { return m_once; } const timeval &getTimeout() const { return m_timeout; } const timeval &getStartTime() const { return m_start; } void makeEndTime(timeval &tm) const; protected: /// force a timeout void fireTimeout(); private: /// add a timer to the static list static void addTimer(Timer *timer); /// remove a timer from the static list static void removeTimer(Timer *timer); typedef std::list<Timer *> TimerList; static TimerList m_timerlist; ///< list of all timers, sorted by next trigger time (start + timeout) RefCount<Slot<void> > m_handler; ///< what to do on a timeout bool m_timing; ///< clock running? bool m_once; ///< do timeout only once? int m_interval; ///< Is an interval-only timer (e.g. clock) // note that intervals only take note of the seconds, not microseconds timeval m_start; ///< start time timeval m_timeout; ///< time length }; /// executes a command after a specified timeout class DelayedCmd: public Command<void> { public: DelayedCmd(const RefCount<Slot<void> > &cmd, unsigned int timeout = 200000); // this constructor has inverted order of parameters to avoid ambiguity with the previous // constructor template<typename Functor> DelayedCmd(unsigned int timeout, const Functor &functor) { initTimer(timeout); m_timer.setFunctor(functor); } void execute(); static Command<void> *parse(const std::string &command, const std::string &args, bool trusted); private: void initTimer(unsigned int timeout); Timer m_timer; }; } // end namespace FbTk #endif // FBTK_TIMER_HH |