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Add find-or-insert Reservation API to ConcurrentHashtable - #12454

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dougqh wants to merge 9 commits into

feat/concurrenthashtable-reservation-api

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Add find-or-insert Reservation API to ConcurrentHashtable#12454
dougqh wants to merge 9 commits into
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feat/concurrenthashtable-reservation-api

Commits on Sep 10, 2026
- Encapsulate ConcurrentHashtable.SizeManager and relocate createBounded
  
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  claude
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  9d2f878
- Add self-bounded Entry generics and a find-or-insert Reservation API to ConcurrentHashtable
  
  dougqh
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  claude
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  52065ce
Commits on Sep 11, 2026
- Restore self-bounded D1/D2 Entry generics, add hashIterator, fix stack-trace re-allocation in LogCollector
  
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  bda4059
- Filter hashIterator to exact keyHash matches
  
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  f34842e
- Move Reservation factory params to the end, add hashIterable, rename loop var
  
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  9934c82
- Type Entry.next as TEntry instead of Entry<?>
  
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  bf02bf9
- Add Reservation escape hatch for pre-built entries, rename isPresent to isReserved
  
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  a62095f
- Drop the self-type parameter from D1.Entry/D2.Entry
  
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  995f7cb
- Restore original D2Entry class in ThreadSafeMapD2Benchmark
  
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  8430830