Checkpoint GC architecture progress toward #1090 - #1235

Merged

proggeramlug merged 37 commits into

PerryTS:mainfrom

andrewtdiz:codex/gc-1090-checkpoint

May 21, 2026

Commits on May 21, 2026

Add copied-minor fallback evidence gates
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5318870
Add malloc object-kind allocation and retention telemetry
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1fb3b6d
Introduce old-generation page side metadata
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a28ad73
Centralize heap child scanning through layout descriptors
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6c09378
Replace remaining copy-only root scanners with mutable visitors
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baeb0f7
Add explicit runtime handles for allocation-sensitive helpers
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a10d7b7
Make conservative scanning a debug or runtime-only fallback path
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76b3a8d
Populate old-page live and fragmentation accounting during GC
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ef6b06c
Route large or external-backed objects away from the copying nursery
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48fd690
Drive old-gen evacuation from page metadata
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e995c29
Move small and medium strings into GC-managed pages
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9c3bf61
Move ordinary closures into GC-managed pages
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235648b
Make packed numeric arrays pointer-free for tracing
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0ecec61
Attach stable shape pointer masks to typed object layouts
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6311f93
Prototype raw numeric fields for one stable object shape
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715f7ef
Add target-collector architecture gates to the stress matrix
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b95ac6a
Bring JSON churn memory stability back under the RSS gate
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5f11dfb
Replace hard-coded GC type ranges with explicit type metadata
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d285ffc
Preserve old-page accounting across copied-minor fast paths
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ad18558
Separate old-page accounting from actual reusable or returned memory
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bff2752
Convert extension copy-only root scanners to mutable visitors
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9334002
Fail representative fallback evidence on known bad reasons
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95784de
Make target-collector workload gates validate results, not only labels
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756a1c7
Add typed-shape and unboxed codegen checks to architecture gates
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b01f300
Prove managed string and closure migration at workload level
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371b479
Persist machine-readable GC evidence from verification runs
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08c2821
Convert remaining first-party extension copy-only root scanners to mutable visitors
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e02085d
Make perry-ext-net copied-minor root rewrite verification stable
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953ae81
Fix codegen test options after rebase
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e702239
Add correctness gates to the benchmark matrix before trusting speed or RSS
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e19442c
Remove per-push handle overhead from the array push fast path
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167cf3b
Prove JSON roundtrip is correct and not retaining transient churn in old pages
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bc56b7a
Split GC runtime by responsibility
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ca443b2
Finalize GC checkpoint evidence cleanup
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0326de1
Fix Linux GC module split compile
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1543782
Fix Fastify mutable root scanner migration
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6294f51
Write GC evidence to runner temp
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922fbfa