[Mlir-commits] [mlir] [MLIR:Python] Fix race on PyOperations. (PR #139721)

[Maksim Levental]

https://github.com/makslevental approved this pull request.

low-level this looks good (modulo nits). high-level it's a little hard to keep the threads in mind (no pun intended) because the mutex is now pulling double-duty in guarding both `valid` and `liveOperations` (and also the relationship to incref). presumably you guys tested this fix in your CI and it worked (resolved the race) but a procedural question/reminder for myself: do we test FT mode here (ie in llvm-project CI)?

https://github.com/llvm/llvm-project/pull/139721