mirror of
https://github.com/vale981/ray
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27 lines
842 B
Python
27 lines
842 B
Python
from typing import Callable
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def with_lock(func: Callable):
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"""Use as decorator (@withlock) around object methods that need locking.
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Note: The object must have a self._lock = threading.Lock() property.
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Locking thus works on the object level (no two locked methods of the same
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object can be called asynchronously).
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Args:
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func (Callable): The function to decorate/wrap.
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Returns:
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Callable: The wrapped (object-level locked) function.
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"""
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def wrapper(self, *a, **k):
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try:
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with self._lock:
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return func(self, *a, **k)
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except AttributeError:
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raise AttributeError(
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"Object {} must have a `self._lock` property (assigned to a "
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"threading.RLock() object in its constructor)!".format(self))
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return wrapper
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