[issue30893] Expose importlib._bootstrap._ModuleLockManager in importlib.machinery
Nick Coghlan
report at bugs.python.org
Mon Jul 10 21:22:17 EDT 2017
Nick Coghlan added the comment:
Based on https://github.com/python/cpython/pull/2646/files#r126574323, I'm actually thinking along different lines: I'm starting to think we should move the current sys.modules to sys._modules, and make sys.modules a synchronised wrapper that does the following for all get/set/delete operations:
# Acquires the global import lock
# Acquires the relevant module lock
# Releases the global import lock
# Mutates sys._modules
# Releases the module lock
That said, I'm not sure that would be sufficient to give the desired level of atomicity, so exposing ModuleLockManager may actually be a better approach.
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