131 lines
3.9 KiB
C++
131 lines
3.9 KiB
C++
// -*- mode: C++; indent-tabs-mode: nil; -*-
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// Timer.hh for Blackbox - An X11 Window Manager
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// Copyright (c) 2001 - 2002 Sean 'Shaleh' Perry <shaleh@debian.org>
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// Copyright (c) 1997 - 2000 Brad Hughes (bhughes@tcac.net)
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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#ifndef _BLACKBOX_Timer_hh
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#define _BLACKBOX_Timer_hh
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extern "C" {
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#ifdef TIME_WITH_SYS_TIME
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# include <sys/time.h>
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# include <time.h>
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#else // !TIME_WITH_SYS_TIME
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# ifdef HAVE_SYS_TIME_H
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# include <sys/time.h>
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# else // !HAVE_SYS_TIME_H
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# include <time.h>
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# endif // HAVE_SYS_TIME_H
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#endif // TIME_WITH_SYS_TIME
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}
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// forward declaration
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class TimerQueueManager;
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class TimeoutHandler {
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public:
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virtual void timeout(void) = 0;
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};
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class BTimer {
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private:
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TimerQueueManager *manager;
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TimeoutHandler *handler;
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bool timing, recur;
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timeval _start, _timeout;
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BTimer(const BTimer&);
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BTimer& operator=(const BTimer&);
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public:
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BTimer(TimerQueueManager *m, TimeoutHandler *h);
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virtual ~BTimer(void);
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void fireTimeout(void);
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inline bool isTiming(void) const { return timing; }
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inline bool isRecurring(void) const { return recur; }
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inline const timeval &getTimeout(void) const { return _timeout; }
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inline const timeval &getStartTime(void) const { return _start; }
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timeval timeRemaining(const timeval &tm) const;
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bool shouldFire(const timeval &tm) const;
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timeval endpoint(void) const;
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inline void recurring(bool b) { recur = b; }
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void setTimeout(long t);
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void setTimeout(const timeval &t);
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void start(void); // manager acquires timer
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void stop(void); // manager releases timer
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void halt(void); // halts the timer
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bool operator<(const BTimer& other) const
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{ return shouldFire(other.endpoint()); }
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};
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#include <queue>
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#include <algorithm>
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template <class _Tp, class _Sequence, class _Compare>
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class _timer_queue: protected std::priority_queue<_Tp, _Sequence, _Compare> {
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public:
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typedef std::priority_queue<_Tp, _Sequence, _Compare> _Base;
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_timer_queue(void): _Base() {}
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~_timer_queue(void) {}
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void release(const _Tp& value) {
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c.erase(std::remove(c.begin(), c.end(), value), c.end());
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// after removing the item we need to make the heap again
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std::make_heap(c.begin(), c.end(), comp);
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}
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bool empty(void) const { return _Base::empty(); }
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size_t size(void) const { return _Base::size(); }
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void push(const _Tp& value) { _Base::push(value); }
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void pop(void) { _Base::pop(); }
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const _Tp& top(void) const { return _Base::top(); }
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private:
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// no copying!
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_timer_queue(const _timer_queue&) {}
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_timer_queue& operator=(const _timer_queue&) {}
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};
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struct TimerLessThan {
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bool operator()(const BTimer* const l, const BTimer* const r) const {
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return *r < *l;
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}
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};
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#include <deque>
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typedef _timer_queue<BTimer*, std::deque<BTimer*>, TimerLessThan> TimerQueue;
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class TimerQueueManager {
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public:
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virtual void addTimer(BTimer* timer) = 0;
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virtual void removeTimer(BTimer* timer) = 0;
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};
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#endif // _BLACKBOX_Timer_hh
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