Bug report

Bug description:

According to the documentation, bothmultiprocessing.Manager.Lock andRLock should be the equivalent of anthreading.Lock andRLock, but the underlyingAcquirerProxy is missing the implementation of the.locked() method to query the state of the lock.

E.g.

frommultiprocessingimportManagerfromthreadingimportLockif__name__=="__main__":lock_th=Lock()lock_th.locked()# this one workswithManager()asmanager:lock_man=manager.Lock()lock_man.locked()# this throws an "AttributeError: 'AcquirerProxy' object has no attribute 'locked'"

CPython versions tested on:

3.11, 3.12

Operating systems tested on:

Linux, macOS

Linked PRs

• gh-115942: Addlocked to several multiprocessing locks #115944