- Task 5: net.close on every path out of a serve iteration (400
included) and the listener on stop; measured 4 -> 54 fds over 50
requests before, 4 -> 4 over 200 after. The loop's comment claimed
the iteration-end drop IS the close -- wrong twice (net.Conn is a
scalar, and a drop would not close an fd); it now says what is true
- Task 6: LW_SOAK=<seconds> in the acceptance script -- each mode under
load, resident+descriptor deltas against a WARMED baseline (warm-up
includes load: cold-to-high-water is not growth), 256 KiB / zero
tolerance; LW_ACCEPT_WOVM soaks another build
- the soak caught ~1.6 MiB/min of in-arena leaks ASan cannot see (the
arena is one allocation to LeakSanitizer); an arena size-class
census + pointer trace attributed five bugs:
- jparse_string sized every decoded string at "rest of the input"
and relabeled len after -- blocks filed on free lists their next
allocation never reads (fs.read_all's mis-size, again); copy out
exact, free at the taken size
- `!=` never dropped fresh operands (headers["authorization"] !=
"Bearer ${key}" leaked both sides per request); Ne now reaps as Eq
- an Int interpolation segment is a fresh int_to_text, not a borrow;
is_borrowed_value_t asks the segment's type
- json.encode(Ctor{...}) had no owner -- record + both field copies
leaked per tool call; its bespoke lowering now drops the argument
- a discarded expression statement owns its result: `pop(lines);`
leaked the popped element; reader builtins excluded
- after: arena live bytes flat per request on every handler; release
soak 30 s per mode watch 0 / run 0 / mcp +20 KiB, descriptors flat;
ASan build flat at 14600 KiB across 601686 requests in 90 s past its
~1200-request quarantine warm-up
- gates: oop-accept ALL CRITERIA MET, oop-e2e 71/0, woc-test 565/0,
wovm-test green, log-watcher 7/0 (soak opt-in, fast path <1 min)
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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|---|---|---|
| .. | ||
| compiler | ||
| done | ||
| exploration | ||
| oop-vm | ||
| 05-hand-rolled-json.md | ||
| 06-bespoke-error.md | ||
| 07-inotify-content-watcher.md | ||
| 08-sendfile-static-assets.md | ||
| 09-concurrency-scaleout.md | ||
| 10-storage-foundations.md | ||
| 11-wal-and-recovery.md | ||
| 12-engine-disk-cutover.md | ||
| 13-class-model-live-pricing.md | ||
| 14-mvc-ui-implementation.md | ||
| 15-mcp-streamable-http.md | ||
| 16-postgres-mirror.md | ||
| discarded.md | ||
| learnings.md | ||