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close_range was captured as a single-fd fd_event carrying only first, so
the runtime evicted every tracked fd >= first, ignoring the last upper
bound and the flags. Bounded calls wrongly dropped still-open higher fds,
and CLOSE_RANGE_CLOEXEC (which keeps fds open) was treated as a full close.
Reclassify close_range to the two_fd_event kind, mapping fd_a/fd_b/extra to
first/last/flags. The runtime now closes only the inclusive [first, last]
range (a negative last from ~0U means unbounded) and skips eviction when
CLOSE_RANGE_CLOEXEC is set or the syscall fails.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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Replace three near-identical trimOldest* functions with a single generic
trimLRU[K comparable, V any] helper; the three wrappers now delegate to it,
with trimOldestPendingPairs passing a cleanup callback for Recycle.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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responsibilities (task 428)
The eventLoop struct held 20+ fields across 5+ responsibilities (SRP violation).
Extract two cohesive sub-structs:
- pairTracker: enter/exit pair matching, age-based LRU pruning, and
DurationToPrev tracking. Replaces enterEvs/enterEvAges/prevPairTimes/
maxPendingEnterEvs/cacheAge fields with a single embedded value.
- fdTracker (extended): absorbs procFdCache/procFdAges/maxProcFdCacheSize,
moving all procfs-resolution cache logic (resolve, cache, prune, delete)
off eventLoop and onto the tracker that already owns the fd table.
eventLoop drops from 20 fields to 12. All methods that previously reached
into eventLoop fields now live on the struct that owns the data.
Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
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