Frowtek a90a2b3c3c fix(photon): inspect port listeners off the gateway event loop ... `_reap_stale_sidecar` is `async`, but it identified the processes holding the sidecar port with two blocking helpers called inline: * `_find_listener_pids` -> `subprocess.run(["lsof", ...], timeout=5.0)` * `_pid_is_sidecar` -> `subprocess.run(["ps", ...], timeout=5.0)`, once per candidate pid so the inspection can hold the shared gateway loop for 5 + 5·N seconds while nothing else on it is serviced. It only runs once the /healthz probe finds something already listening — the orphaned-sidecar recovery path — and `_reap_stale_sidecar` is awaited from `_start_sidecar`, which runs on every reconnect (`connect(is_reconnect=True)`). The stall therefore lands on a live gateway that is still serving every other platform, right when a crashed sidecar has already left an orphan behind. Move the whole inspection to one `asyncio.to_thread` hop (one hop rather than N+1 round trips). The reaping semantics are untouched: SIGTERM for verified orphans, SIGKILL escalation, and both foreign-listener RuntimeErrors behave exactly as before. Same off-the-loop class as the inbound-image decision (#66688) and the cron-fire verifier. Adds a regression test asserting both the lsof lookup and the per-pid ps check execute on a worker thread rather than the loop thread.		2026-07-28 21:45:52 -07:00
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photon	fix(photon): inspect port listeners off the gateway event loop	2026-07-28 21:45:52 -07:00