why using SimpleQueue with threading lock?

facebookresearch / torchbeast

A PyTorch Platform for Distributed RL

Apache License 2.0

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Closed 1576012404 closed 4 years ago

1576012404 commented 4 years ago

it seems that SimpleQueue is thread safe,so why need use threading lock in get_batch function in the file monobeast.py?

heiner commented 4 years ago

The lock makes sure that only one thread fills a batch at a time.