Markus Zolliker
1715f95dd4
in order to avoid sporadic timeout problems Change-Id: I36f67ae72b65e9c1f3179cae942b0a7d94584e55
46 lines
1.2 KiB
Python
46 lines
1.2 KiB
Python
"""wrapper around PyANC350v4
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main purpose: make Positioner thread safe
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without this, when accessing the device from different threads, timeouts may appear
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allows also to omit axis in method arguments
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"""
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import inspect
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import threading
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# make sure PYTHONPATH points to the directory of PyANC350v4.py
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# e.g. in /home/l_samenv/Documents/anc350/Linux64/userlib/lib
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from PyANC350v4 import Positioner
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class HwAxis:
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hw = None
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lock = None
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axes = set()
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def __init__(self, axisNo):
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self.axisNo = axisNo
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if not self.axes:
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self.axes.add(axisNo)
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HwAxis.hw = Positioner()
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HwAxis.lock = threading.Lock()
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super().__init__()
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def close(self):
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self.axes.discard(self.axisNo)
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if not self.axes:
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self.hw.disconnect()
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# wrap methods from Positioner and insert to HwAxis
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for name, method in Positioner.__dict__.items():
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try:
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arguments = inspect.getfullargspec(method).args
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except TypeError as e:
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continue
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if arguments[0:2] == ['self', 'axisNo']:
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def wrapper(self, *args, _method=method, **kwds):
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with self.lock:
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return _method(self.hw, self.axisNo, *args, **kwds)
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setattr(HwAxis, name, wrapper)
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