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Title: [WIP] Add SemLock implementation to RustPython by Copilot · Pull Request #6506 · RustPython/RustPython · GitHub

Open Graph Title: [WIP] Add SemLock implementation to RustPython by Copilot · Pull Request #6506 · RustPython/RustPython

X Title: [WIP] Add SemLock implementation to RustPython by Copilot · Pull Request #6506 · RustPython/RustPython

Description: Establish baseline by running targeted existing tests to observe current failures Implement _multiprocessing.SemLock and sem_unlink functionality (Unix-focused, preserving Windows behavior) Add or adapt focused tests to cover basic SemLock creation and acquire/release Run targeted tests for _multiprocessing/multiprocessing synchronization and verify behavior Final review, code cleanup, and security checks Original prompt This section details on the original issue you should resolve _multiprocessing_SemLock This is missing in RustPython. Checkout SemLock in CPython and implement one for RustPython Comments on the Issue (you are @copilot in this section) Fixes #3965 ✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

Open Graph Description: Establish baseline by running targeted existing tests to observe current failures Implement _multiprocessing.SemLock and sem_unlink functionality (Unix-focused, preserving Windows behavior) Add o...

X Description: Establish baseline by running targeted existing tests to observe current failures Implement _multiprocessing.SemLock and sem_unlink functionality (Unix-focused, preserving Windows behavior) Add o...

Opengraph URL: https://github.com/RustPython/RustPython/pull/6506

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[WIP] Add SemLock implementation to RustPython https://github.com/RustPython/RustPython/pull/6506/files#top
Show all changes 6 commits https://github.com/RustPython/RustPython/pull/6506/files
34bbaf6 Initial plan Copilot Dec 25, 2025 https://github.com/RustPython/RustPython/pull/6506/commits/34bbaf63d2fbc5b74a8c5db99dc0e716df805945
dcd74f1 Changes before error encountered Copilot Dec 25, 2025 https://github.com/RustPython/RustPython/pull/6506/commits/dcd74f17c05b5b3e35de3b038843283dfbaf93f2
5a68008 Implement Unix SemLock and expose sem_unlink Copilot Dec 25, 2025 https://github.com/RustPython/RustPython/pull/6506/commits/5a6800857bcb66cc5658e46a94a6fbeca7006095
4abfb6b Fix missing sem_* symbols on libc targets Copilot Dec 25, 2025 https://github.com/RustPython/RustPython/pull/6506/commits/4abfb6ba385f6aa657ff51e49110bc99b8741548
6c2a8fc Fix SemLock constant interning to avoid panic Copilot Dec 25, 2025 https://github.com/RustPython/RustPython/pull/6506/commits/6c2a8fcb6548c938e203bbdf4e08941e9676ae76
4af41d3 Fix cfg youknowone Dec 25, 2025 https://github.com/RustPython/RustPython/pull/6506/commits/4af41d3462cbcc82119cbee4ceb9b93160d9eb59
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