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Title: Add per-size tuple freelist (20 buckets × 2000 each) by youknowone · Pull Request #7361 · RustPython/RustPython · GitHub

Open Graph Title: Add per-size tuple freelist (20 buckets × 2000 each) by youknowone · Pull Request #7361 · RustPython/RustPython

X Title: Add per-size tuple freelist (20 buckets × 2000 each) by youknowone · Pull Request #7361 · RustPython/RustPython

Description: Summary Add TupleFreeList with 20 per-size buckets matching CPython's tuples[PyTuple_MAXSAVESIZE] (sizes 1..=20, 2000 capacity each) freelist_push reads element count from the object and stores in buckets[len-1] freelist_pop takes &Self payload reference to select the correct size bucket Add pyinner_layout() helper for custom freelist Drop impls Update freelist_pop trait signature to accept &Self across all freelist types CPython alignment Aspect CPython RustPython PyTuple_MAXSAVESIZE 20 TUPLE_MAXSAVESIZE = 20 Py_tuple_MAXFREELIST 2000 TUPLE_MAXFREELIST = 2000 Bucket structure tuples[20] array buckets: [Vec; 20] Push-time type check Py_IS_TYPE(op, &PyTuple_Type) vtable dispatch (HAS_FREELIST=false for structseq) + heaptype_ext.is_none() Index calculation Py_SIZE(op) - 1 elements.len() - 1 Empty tuple skip Implicit (singleton return) Explicit len == 0 check Test plan cargo build --release cargo clippy --release test_tuple — pass test_structseq — pass (structseq types correctly excluded from freelist) test_os, test_time, test_stat — pass (structseq-heavy tests) test_sys — pass 🤖 Generated with Claude Code Summary by CodeRabbit Performance Improved tuple memory management with per-size caching to reduce allocations for common small/medium tuples. Refactor Unified and modernized internal object reuse across several built-in types for more consistent memory reuse and safer reuse checks; no changes to external behavior.

Open Graph Description: Summary Add TupleFreeList with 20 per-size buckets matching CPython's tuples[PyTuple_MAXSAVESIZE] (sizes 1..=20, 2000 capacity each) freelist_push reads element count from the object and store...

X Description: Summary Add TupleFreeList with 20 per-size buckets matching CPython's tuples[PyTuple_MAXSAVESIZE] (sizes 1..=20, 2000 capacity each) freelist_push reads element count from the object and s...

Opengraph URL: https://github.com/RustPython/RustPython/pull/7361

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