Update: 2026-01-28 #152
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Update: 2026-01-28 #152
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We make use of the new upstream API `rb_mmtk_obj_need_cleanup_p` so that we don't call the expensive `obj_free` when an obj_free candidate dies.
We temporarily excluded `weak_st_par_*` from capture_ruby.bt because we no longer process st_table instances in parallel by default. We replaced the probe for `update_weak_fields` which no longer exists with `process_weak_references`.
We merged the ruby repo with the latest master branch. We added support for the newly introduced `rb_gc_obj_needs_cleanup_p` function.
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We tidied the code a bit by moving work packets related to global weak tables to a dedicated module.
Using the newly introduced
rb_mmtk_obj_need_cleanup_pfunction upstream, we skip objects that don't need cleaning up when processingobj_freecandidates.We also fixed some eBPF probes and visualization.