Teknium 20b759cd02 fix(process): reconcile session.exited against real child exit in poll/wait (#17430) ...

When a background terminal process spawns a descendant daemon that
inherits the stdout pipe (e.g. 'hermes update' triggering a gateway
systemctl restart), the reader thread's stdout.read() never returns EOF
and its finally: block never runs. session.exited stays False forever,
so process(action='poll') returns 'running' indefinitely even though
the direct child exited long ago.

Issue #17327: Feishu user polled 74 times over 7 minutes before killing
the gateway manually.

Fix: add _reconcile_local_exit() that checks the direct Popen.poll()
before trusting session.exited. If the direct child has exited, drain
any immediately-readable bytes non-blocking and flip session.exited.
Called from poll() and wait(). The stuck reader thread remains blocked
but is a daemon thread and gets reaped with the process.

Safe no-op for env/PTY sessions, already-exited sessions, and live
children (returns None from Popen.poll()).

2026-04-29 04:59:21 -07:00

28 KiB

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