Only register shared memory on creation #119126
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Most changes to Python require a NEWS entry. Add one using the blurb_it web app or the blurb command-line tool. If this change has little impact on Python users, wait for a maintainer to apply the |
ResourceTracker of a child process should not raise warnings or try to clean up SharedMemory if it was created and is still in use by the parent process. Even if ResourceTracker was asked to track that memory. If that was allowed, an error is raised when the parent process tries to unlink the memory later. Previous commit also makes manual unregistration from resource_tracker unneeded.
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Most changes to Python require a NEWS entry. Add one using the blurb_it web app or the blurb command-line tool. If this change has little impact on Python users, wait for a maintainer to apply the |
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gh-116849: Prevents multiple registration of SharedMemory with ResourceTracker.
Registering a SharedMemory location only once (on creation) will prevent multiple unlink attempts failing when ResourceTracker tries to unlink memory that has been registered multiple times (from different processes).