Remove Frame mutex and use DataStack bump allocator for LocalsPlus#7333

Merged

youknowone merged 14 commits intoRustPython:mainfrom

youknowone:worktree-frame-datastack

Mar 4, 2026

Commits on Mar 4, 2026

Remove PyMutex<FrameState> from Frame, use UnsafeCell fields directly
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Add thread-local DataStack for bump-allocating frame data
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Unify FastLocals and BoxVec stack into LocalsPlus
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Use DataStack for LocalsPlus in non-generator function calls
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Fix clippy: import Layout from core::alloc instead of alloc::alloc
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Fix vectorcall compatibility with LocalsPlus API
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Add datastack, nlocalsplus, ncells, tstate to cspell dictionary
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Fix DataStack pop() for non-monotonic allocation addresses
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Fix stale comments: release_datastack -> materialize_localsplus
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Fix non-threading mode for parallel test execution
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Fix CallAllocAndEnterInit to use LocalsPlus stack API
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Use checked arithmetic in LocalsPlus and DataStack allocators
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Address code review: checked arithmetic, threading feature deps, Send gate
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Clean up comments: remove redundant/stale remarks, fix CPython references
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