Function deadman_timer

test.py:229–244

()

    seconds: int,
) -> threading.Thread:  # 60 seconds default timeout
    def deadman_timer() -> None:
        # Unconditional second-tier kill: if the primary watchdog gets stuck
        # in dump_thread_stacks() / psutil queries / blocked I/O, this fires
        # _DEADMAN_GRACE_S later and exits without running any diagnostics.
        time.sleep(seconds + _DEADMAN_GRACE_S)
        if _CANCEL_WATCHDOG.is_set():
            return
        try:
            _release_held_build_locks()
        except KeyboardInterrupt as ki:
            # Suppress: the unconditional os._exit() below is the entire point
            # of the deadman timer. Re-raising would defeat it.
            handle_keyboard_interrupt(ki)
        except Exception:
            pass
        os._exit(3)  # Exit code 3 = deadman fired (primary watchdog also stuck)

    def watchdog_timer() -> None:
        time.sleep(seconds)