[Tsavorite] Replace SafeTailAddress background refresh with per-thread inflight publish protocol#1720

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badrishc wants to merge 20 commits intodevfrom

badrishc/lightepoch-fold-safetail

Commits on May 4, 2026

LightEpoch user-word primitive; fold SafeTailAddress refresh into producers

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badrishc
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Fix RefreshSafeTailAddress read ordering with memory barrier

badrishc
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Copilot
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Rename SafeTailShiftCallback to SafeTailPageShiftCallback; fix silent-callback regression

badrishc
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Copilot
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Address review feedback; remove SubscriberRefreshFrequencyMs

badrishc
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Copilot
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Use cached SafeTailAddress in GetNext hot path

badrishc
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Copilot
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Replace visitor-pattern scan with direct unsafe GetMinUserWord

badrishc
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Copilot
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Remove ForEachUserWord and ILightEpochUserWordVisitor

badrishc
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Copilot
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Pre-refresh SafeTailAddress when multiple iterators are registered

badrishc
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Copilot
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Add comments for activeSingleIteratorCount usage and race safety

badrishc
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Copilot
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Remove CommitInflightEnqueue; simplify to Begin/End protocol

badrishc
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Copilot
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Add tail-based fast path to skip epoch scan in RefreshSafeTailAddress

badrishc
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Copilot
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Add exponential backoff to consumer scan in ScanSingle iterator

badrishc
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Copilot
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Replace lock with CAS in user-word allocation; remove per-Acquire/Release reset

badrishc
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Copilot
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Split NotifyParkedWaiters into inline fast-path + NoInlining slow path

badrishc
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Copilot
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Address PR review: fix AllocateBlock inflight leak; remove hardcoded offset

badrishc
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Copilot
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Fix GetNext hang: use cached SafeTailAddress with fallback to scan

badrishc
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Copilot
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Add spin-wait in GetNext before epoch-table scan

badrishc
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Copilot
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Wrap all enqueue methods in try/finally for exception safety

badrishc
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Copilot
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Address GPT 5.5 review: exception safety for callbacks and TEpochAccessor overloads

badrishc
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Copilot
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Fix AllocateBlock cannedException path: restore epoch+inflight before throw

badrishc
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Copilot
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[Tsavorite] Replace SafeTailAddress background refresh with per-thread inflight publish protocol#1720

[Tsavorite] Replace SafeTailAddress background refresh with per-thread inflight publish protocol#1720
badrishc wants to merge 20 commits intodevfrom
badrishc/lightepoch-fold-safetail

Commits on May 4, 2026

LightEpoch user-word primitive; fold SafeTailAddress refresh into producers

Fix RefreshSafeTailAddress read ordering with memory barrier

Rename SafeTailShiftCallback to SafeTailPageShiftCallback; fix silent-callback regression

Address review feedback; remove SubscriberRefreshFrequencyMs

Use cached SafeTailAddress in GetNext hot path

Replace visitor-pattern scan with direct unsafe GetMinUserWord

Remove ForEachUserWord and ILightEpochUserWordVisitor

Pre-refresh SafeTailAddress when multiple iterators are registered

Add comments for activeSingleIteratorCount usage and race safety

Remove CommitInflightEnqueue; simplify to Begin/End protocol

Add tail-based fast path to skip epoch scan in RefreshSafeTailAddress

Add exponential backoff to consumer scan in ScanSingle iterator

Replace lock with CAS in user-word allocation; remove per-Acquire/Release reset

Split NotifyParkedWaiters into inline fast-path + NoInlining slow path

Address PR review: fix AllocateBlock inflight leak; remove hardcoded offset

Fix GetNext hang: use cached SafeTailAddress with fallback to scan

Add spin-wait in GetNext before epoch-table scan

Wrap all enqueue methods in try/finally for exception safety

Address GPT 5.5 review: exception safety for callbacks and TEpochAccessor overloads

Fix AllocateBlock cannedException path: restore epoch+inflight before throw