timer.py

   1 import bisect
   2 from time import *
   3 from enigma import *
   4
   5 class TimerEntry:
   6         EventPrepare = 0
   7         EventStart   = 1
   8         EventEnd     = 2
   9         EventAbort   = 3
  10
  11         StateWait    = 0
  12         StatePrepare = 1
  13         StateRunning = 2
  14         StateEnded   = 3
  15
  16         def __init__(self, begin, end):
  17                 self.begin = begin
  18                 self.prepare_time = 10
  19                 self.end = end
  20                 self.state = 0
  21
  22         def getTime(self):
  23                 if self.state == 0:
  24                         return self.begin - self.prepare_time
  25                 elif self.state == 1:
  26                         return self.begin
  27                 else:
  28                         return self.end
  29
  30         def __lt__(self, o):
  31                 return self.getTime() < o.getTime()
  32
  33         def activate(self, event):
  34                 print "timer %s got activated (%d)!" % (self.description, event)
  35
  36 class Timer:
  37
  38         MaxWaitTime = 100
  39
  40         def __init__(self):
  41                 self.timer_list = [ ]
  42                 self.processed_timers = [ ]
  43
  44                 self.timer = eTimer()
  45                 self.timer.timeout.get().append(self.calcNextActivation)
  46
  47                 self.calcNextActivation()
  48
  49         def addTimerEntry(self, entry):
  50                 bisect.insort(self.timer_list, entry)
  51                 self.calcNextActivation()
  52
  53         def setNextActivation(self, when):
  54                 delay = int((when - time()) * 1000)
  55                 print "next activation: %d (in %d seconds)" % (when, delay)
  56
  57                 self.timer.start(delay, 1)
  58                 self.next = when
  59
  60         def calcNextActivation(self):
  61                 self.processActivation()
  62
  63                 min = int(time()) + self.MaxWaitTime
  64
  65                 # calculate next activation point
  66                 if len(self.timer_list):
  67                         w = self.timer_list[0].getTime()
  68                         if w < min:
  69                                 min = w
  70
  71                 self.setNextActivation(min)
  72
  73         def doActivate(self, w):
  74                 w.activate(w.state)
  75                 self.timer_list.remove(w)
  76                 w.state += 1
  77                 if w.state < TimerEntry.StateEnded:
  78                         bisect.insort(self.timer_list, w)
  79                 else:
  80                         bisect.insort(self.processed_timers, w)
  81
  82         def processActivation(self):
  83                 t = int(time()) + 1
  84
  85                 # we keep on processing the first entry until it goes into the future.
  86                 while len(self.timer_list) and self.timer_list[0].getTime() < t:
  87                         self.doActivate(self.timer_list[0])
  88
  89 #t = Timer()
  90 #base = time() + 5
  91 #t.addTimerEntry(TimerEntry(base+10, base+20, None, None, "test #1: 10 - 20"))
  92 #t.addTimerEntry(TimerEntry(base+10, base+30, None, None, "test #2: 10 - 30"))
  93 #t.addTimerEntry(TimerEntry(base+15, base+20, None, None, "test #3: 15 - 20"))
  94 #t.addTimerEntry(TimerEntry(base+20, base+35, None, None, "test #4: 20 - 35"))