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1. Commits on Oct 15, 2026

   • [JSC] BlockDirectory's bits should be guarded by a mutate-grow lock

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     kmiller68

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2. Commits on Oct 14, 2026

   • [JSC] Rename the GC's bytes-visited counts to bytes marked and old generation cell bytes

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     dhecht

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   • [JSC] Keep SourceCodeCache if it was touched in the last full GC-cycle

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     Constellation

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3. Commits on Oct 13, 2026

   • [JSC] Make the GC's memory accounting work for collections of several heaps

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     dhecht

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   • Remove ShadowRealm

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     annevk

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   • Replace NODELETE with LEGACY_NODELETE in JavaScriptCore

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     rniwa

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4. Commits on Oct 12, 2026

   • [JSC] Make the GC's scope decision and visitor checks work for collections of several heaps

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     dhecht

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   • [JSC] Support heaps joining and leaving a Collector, for global collections

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     dhecht

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5. Commits on Oct 11, 2026

   • [JSC] Eden GC should sweep only new and dirty ArrayBuffers

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     sosukesuzuki

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6. Commits on Oct 8, 2026

   • [JSC] Make the GC verifier work on collections of several heaps

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     dhecht

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   • [JSC] Use the heap's own visitor in rememberExecutingAndCompilingCodeBlocks()

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     dhecht

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   • [JSC] Suspend compiler threads when any of a collection's heaps has JIT plans

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     dhecht

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7. Commits on Oct 7, 2026

   • [JSC] Assert that Heap methods are only passed cells from that Heap

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     dhecht

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8. Commits on Oct 6, 2026

   • [JSC] Group the per-heap work of the Collector's Begin and End phases

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     dhecht

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9. Commits on Oct 1, 2026

   • [JSC] Clean up the boundary between the Collector and the Heap at the end of a collection

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     dhecht

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   • [JSC] Move the request queue checks and the mutator's phase loop from the Heap into the Collector

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     dhecht

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10. Commits on Sep 30, 2026

    • [JSC] Assert that no request outlives the collector thread instead of checking for it in relinquishConn()

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      dhecht

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    • [JSC] Clean up the boundary between the Collector and the Heap at the start of a collection

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      dhecht

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    • [JSC] Mark non-escaping lambda parameters as NOESCAPE

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      cdumez

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11. Commits on Sep 29, 2026

    • [JSC] Separate the Heap's shutdown from its finalization

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      dhecht

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    • [JSC] Move the marking constraint set to the Collector

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      dhecht

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12. Commits on Sep 28, 2026

    • [JSC] Move the Collector's setup and teardown out of Heap's constructor and destructor

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      dhecht

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    • [JSC] Unify and extract JSONCache

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      Constellation

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13. Commits on Sep 27, 2026

    • [JSC] Name the Wasm callee cleanup Heap functions for the marking they do

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      dhecht

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    • [JSC] Remove SlotVisitor's Heap in preparation for a visitor that marks more than one heap

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      dhecht

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14. Commits on Sep 25, 2026

    • [JSC] Prepare visitChildren and marking constraints for a SlotVisitor that marks more than one heap

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      dhecht

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    • [JSC] Move the Collector implementation out of Heap.cpp

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      dhecht

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15. Commits on Sep 24, 2026

    • [JSC] Split the GC's collection-cycle state and machinery into a Collector class

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      dhecht

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16. Commits on Sep 21, 2026

    • Unreviewed build fix after 321483@main

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      cdumez

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    • Type the JSC heap names as ASCIICString and the profiler marker messages as UTF8CString

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      cdumez

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17. Commits on Sep 18, 2026

    • finalizeWasmCalleeCleanup should run a cross-modifying code fence

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      kmiller68

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      robert-jenner

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18. Commits on Sep 17, 2026

    • [JSC] Redesign WeakBlock

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      Constellation

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19. Commits on Sep 16, 2026

    • Reduce use of CString::legacyCStringPointer() in assertion and signpost macros

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      cdumez

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20. Commits on Sep 14, 2026

    • [JSC] Unify JS Allocators

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      Constellation

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21. Commits on Sep 12, 2026

    • Rename toCString() to toUTF8CString() and stop PrintStream from printing an untyped CString

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      cdumez

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