66 lines
1.6 KiB
Python
66 lines
1.6 KiB
Python
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import weakref
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import threading, time
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from devsup.hooks import addHook
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insts = {}
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def done(obj):
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print obj,'Expires'
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class Driver(threading.Thread):
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def __init__(self, name):
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super(Driver,self).__init__()
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self.name = name
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self._lock = threading.Lock()
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self._recs = set()
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self._run = True
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self._stop = threading.Event()
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self.value = 0
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addHook('AfterIocRunning', self.start)
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addHook('AtIocExit', self.stop)
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def stop(self):
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print 'Stopping driver',self.name
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with self._lock:
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self._run = False
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self._stop.wait()
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print 'Finished with',self.value
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def addrec(self, rec):
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with self._lock:
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self._recs.add(rec)
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def delrec(self, rec):
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with self._lock:
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self._recs.remove(rec)
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def run(self):
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try:
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while self._run:
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time.sleep(1.0)
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with self._lock:
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val = self.value
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self.value += 1
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for R in self._recs:
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R.record.scan(sync=True, reason=val)
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finally:
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self._stop.set()
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def addDrv(name):
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print 'Create driver',name
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insts[name] = Driver(name)
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class Device(object):
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def __init__(self, rec, drv):
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self.driver, self.record = drv, rec
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self.driver.addrec(self)
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def detach(self, rec):
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self.driver.delrec(self)
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def process(self, rec, data):
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if data is not None:
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self.VAL = data
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def build(rec, args):
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drv = insts[args]
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return Device(rec, drv)
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