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fix: replace class-name walker-gate heuristic with property-based gate #618

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Merged
fglock merged 7 commits into from
Apr 29, 2026
Merged

fix: replace class-name walker-gate heuristic with property-based gate #618

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ce8186e
fix: replace class-name walker-gate heuristic with property-based gate
fglock Apr 29, 2026
5095e67
fix(runtime): values() in scalar context returns count, not last element
fglock Apr 29, 2026
691f953
perf(walker-gate): cache reachable set per flush invocation
fglock Apr 29, 2026
6c4933e
docs(moose_support): add D-W6.19 phase tracking t/52leaks.t regression
fglock Apr 29, 2026
5070c6f
docs(moose_support): close D-W6.19 - misdiagnosis explained
fglock Apr 29, 2026
63392f9
fix(jperl): bound default JVM heap to 4G with 2G soft target
fglock Apr 29, 2026
b646714
fix(jperl): drop SoftMaxHeapSize - interacts badly with weak-refs
fglock Apr 29, 2026
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102 changes: 102 additions & 0 deletions dev/diagnostic-traces/cmop-metaclass-refcount-underflow.txt
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Original file line number Diff line number Diff line change
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[REFCOUNT] *** ARMED *** base=573487274 (RuntimeHash) bless='Class::MOP::Class' refCount=0
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 1 -> 2 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 2 -> 1 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 1 -> 2 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 2 -> 3 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 3 -> 4 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 3 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 3 -> 2 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 2 -> 3 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 3 -> 4 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 5 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 6 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 6 -> 7 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 7 -> 6 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 6 -> 5 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 4 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 5 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 4 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 5 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 4 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 5 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 4 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 5 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 4 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 5 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 4 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 5 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 4 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 3 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 3 -> 2 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 2 -> 3 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 3 -> 2 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 2 -> 3 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 3 -> 4 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 5 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 6 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 6 -> 5 WeakRefRegistry.weaken (decrement on weakening)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 6 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 6 -> 5 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 4 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 3 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 3 -> 4 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 5 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 6 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 4 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 3 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 3 -> 4 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 5 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 7 -> 6 WeakRefRegistry.weaken (decrement on weakening)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 6 -> 5 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 4 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 5 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 6 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 6 -> 7 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 7 -> 6 WeakRefRegistry.weaken (decrement on weakening)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 6 -> 5 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 6 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 6 -> 5 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 6 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 6 -> 7 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 7 -> 6 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 6 -> 5 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 4 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 3 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 3 -> 2 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 2 -> 1 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 1 -> 2 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 2 -> 3 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 3 -> 4 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 5 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 4 WeakRefRegistry.weaken (decrement on weakening)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 5 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 4 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 3 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 3 -> 2 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 2 -> 3 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 3 -> 4 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 5 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 3 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 3 -> 2 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 2 -> 3 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 3 -> 4 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 6 -> 5 WeakRefRegistry.weaken (decrement on weakening)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 4 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 3 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 3 -> 4 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 5 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 6 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 6 -> 5 WeakRefRegistry.weaken (decrement on weakening)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 4 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 5 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 4 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 5 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 6 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 6 -> 5 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 5 -> 4 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 4 -> 3 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 3 -> 2 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 2 -> 1 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 1 -> 0 MortalList.flush (deferred decrement)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 1 -> 2 RuntimeScalar.setLargeRefCounted (increment on store)
[REFCOUNT] base=573487274 (RuntimeHash) blessId=2 2 -> 3 RuntimeScalar.setLargeRefCounted (increment on store)
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