49 lines
1.0 KiB
Python
49 lines
1.0 KiB
Python
import time
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from multiprocessing import Process, Queue, Event
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class Tracker(Process):
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def __init__(self):
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self._queue = Queue()
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Process.__init__(self, args=(self._queue,))
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self._stop = Event()
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self._finished = Event()
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def run(self):
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print("Running")
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while not self._stop.is_set():
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time.sleep(1)
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self._queue.put([1,2,3,4,5,"lkj"])
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self._finished.set()
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print("Closing")
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def start_acquisition(self):
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self.start()
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def stop_acquisition(self):
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self._stop.set()
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def get_result(self):
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self._stop.set()
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while not self._finished.is_set():
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time.sleep(0.1)
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return self._queue.get()
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def shutdown(self):
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self._stop.set() # just to make sure
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self.join()
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if __name__ == "__main__":
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p = Tracker()
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try:
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p.start_acquisition()
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time.sleep(3)
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p.stop_acquisition()
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a = p.get_result()
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print("Result is: ", a)
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finally:
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p.shutdown()
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