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GH-126491: GC: Mark objects reachable from roots before doing cycle collection (GH-126502)

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* Mark almost all reachable objects before doing collection phase

* Add stats for objects marked

* Visit new frames before each increment

* Remove lazy dict tracking

* Update docs

* Clearer calculation of work to do.
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Mark Shannon 2024-11-18 14:31:26 +00:00 • committed by GitHub
parent a1d9c8aa80
commit b0fcc2c47a
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21 changed files with 332 additions and 330 deletions
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5
Tools/scripts/summarize_stats.py
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@ -1118,6 +1118,8 @@ def gc_stats_section() -> Section:
Count(gen["collections"]),
Count(gen["objects collected"]),
Count(gen["object visits"]),
Count(gen["objects reachable from roots"]),
Count(gen["objects not reachable from roots"]),
)
for (i, gen) in enumerate(gc_stats)
]
@ -1127,7 +1129,8 @@ def gc_stats_section() -> Section:
"GC collections and effectiveness",
[
Table(
("Generation:", "Collections:", "Objects collected:", "Object visits:"),
("Generation:", "Collections:", "Objects collected:", "Object visits:",
"Reachable from roots:", "Not reachable from roots:"),
calc_gc_stats,
)
],