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10d1e47df3
* fix(hooks): bound db-lock probe subprocesses and gate probe behind hook slot (#2163) The Claude PreToolUse db-lock probe leaks orphaned lsof processes when the hook process is hard-killed mid-probe (e.g. Claude Code's 10s hook timeout under load). Orphans accumulate, raise load, slow the next probe, and snowball to sustained 100% CPU. - Wrap the unix lsof/ps fallback in coreutils timeout (-k 1 2 / -k 1 1), resolved via a lazy self-test, so probe children self-destruct within ~3s even if the hook is SIGKILLed. GITNEXUS_HOOK_TIMEOUT_PATH overrides the guard binary; the sentinel value 'disabled' turns the guard off; hosts without a usable guard keep the previous behavior. - Acquire the per-repo hook slot before probing (all three adapters), bounding concurrent probes to 3 per .gitnexus, with probe and augment inside try/finally so the slot is always released. - Tests: source-order contract, slot-gating behavior, orphan reaping with a SIGTERM-immune fake lsof and a SIGKILLed parent (red on base), probe-copy byte parity, no-guard equivalence, broken-guard rejection. Note: pre-commit typecheck skipped; the 62 tsc errors are pre-existing on main (all in src/core/** and src/server/, none in files touched here; base==head invariant verified). * fix(hooks): address tri-review P3 findings (#2165) - Map guard signal-death (status null + signal, no spawnSync error) to fail-closed at both the lsof and ps call sites, closing the freeze window (SIGSTOP / laptop sleep > 2s) that previously landed fail-open. Rewrite the exit-code comments: coreutils surfaces the -k kill as signal death, 124 is budget expiry (live arm), 137 covers only exit-code-propagating wrappers or an externally SIGKILLed child. - Add a debug-gated 'augment skipped: hook slots saturated' stderr line on the slot-starved early return in all three adapters, restoring observability under GITNEXUS_DEBUG=1. - GITNEXUS_HOOK_TIMEOUT_PATH now participates in candidate fall-through: the env candidate is tried first, then the built-ins, each behind the lazy self-test — an existing-but-unusable env path (directory, non-executable) can no longer silently disable orphan containment. - Tests: +6 — guard exit 124 pins the live arm (CJS+Plugin), guard signal-death pins the new mapping (CJS+Plugin, red before the fix), antigravity behavioral slot-gate, env-dir fall-through still reaps a SIGTERM-immune orphan via a built-in guard. Note: pre-commit typecheck skipped; the 62 tsc errors are pre-existing on main (none in files touched here). |
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| .mcp.json | ||