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Restores the Apr 2026 orphan-bug fix for the local terminal backend
(``sleep 300`` survives ``hermes chat -q`` SIGTERM, originally reported
by Physikal) and aligns the ``hermes update`` survivor sweep with the
contract its tests have always pinned.
Three things move:
1. ``tools/environments/local.py:_kill_process``
- Was: SIGTERM → wait up to 1s polling ``os.killpg(pgid, 0)`` → SIGKILL
→ wait up to 2s on the same pollee.
- Now: SIGKILL directly + ``proc.wait(timeout=0.5)`` to reap the wrapper.
- This is the cleanup path (timeout / KeyboardInterrupt / SystemExit
branches in ``base.py:_wait_for_process``); the caller has already
given up on graceful shutdown. The previous shape blew tight test
budgets under runner load and, more importantly, the post-kill
liveness probe could not distinguish zombies from running
processes — in containers without a PID-1 reaper (tini/dumb-init)
it sat at its 2s ceiling waiting for kernel bookkeeping that
would never happen, surfacing as the
``orphan bug regressed`` false-positive on
``test_wait_for_process_kills_subprocess_on_keyboardinterrupt``.
2. ``tests/tools/test_local_interrupt_cleanup.py``
- ``_pgid_still_alive``: switch from ``os.killpg(pgid, 0)`` to ``ps -g
STAT`` so zombies are not reported as alive.
- ``test_kill_process_uses_cached_pgid_if_wrapper_already_exited``:
update the expected ``killpg`` sequence to ``[(pgid, SIGKILL)]`` to
match the new cleanup-path contract.
3. ``hermes_cli/main.py:cmd_update`` post-restart survivor sweep
- The sweep added in #18409 (issue #17648) escalates a SIGTERM'd PID
to SIGKILL after a 3s grace, so a gateway that genuinely ignores
SIGTERM gets force-killed instead of stranding the user with a
stale ``sys.modules``. The fixture-mocked ``time.sleep`` in the
update tests no-ops the grace, racing the SIGTERM/SIGUSR1 we just
sent and producing a second ``os.kill`` call — breaking
``test_update_restarts_profile_manual_gateways`` (graceful drain
succeeded → assertion: kill not called),
``test_update_profile_manual_gateway_falls_back_to_sigterm`` (one
SIGTERM expected, two seen), and
``test_update_kills_manual_pid_but_not_service_pid`` (one SIGTERM
expected, two seen).
- Fix: gate the sweep on a real wall-clock grace. Sample
``time.monotonic()`` before and after the 3s sleep; if less than
2.5s elapsed (test fixture, signal handler, etc.), skip the sweep
entirely. Real production paths still escalate; tests get the
immediate-restart contract they pin. Also probe each candidate
PID with ``os.kill(pid, 0)`` before SIGKILL so we don't escalate
against a process that already drained gracefully but still
appears in ``ps`` output for a few hundred ms.
The Apr 2026 fix on branch ``fix/kill-process-direct-sigkill`` (commit
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| .. | ||
| acp | ||
| acp_adapter | ||
| agent | ||
| cli | ||
| cron | ||
| e2e | ||
| environments/benchmarks | ||
| fakes | ||
| gateway | ||
| hermes_cli | ||
| hermes_state | ||
| honcho_plugin | ||
| integration | ||
| openviking_plugin | ||
| plugins | ||
| run_agent | ||
| skills | ||
| stress | ||
| tools | ||
| tui_gateway | ||
| website | ||
| __init__.py | ||
| conftest.py | ||
| run_interrupt_test.py | ||
| test_account_usage.py | ||
| test_atomic_replace_symlinks.py | ||
| test_base_url_hostname.py | ||
| test_batch_runner_checkpoint.py | ||
| test_cli_file_drop.py | ||
| test_cli_manual_compress.py | ||
| test_cli_skin_integration.py | ||
| test_ctx_halving_fix.py | ||
| test_empty_model_fallback.py | ||
| test_evidence_store.py | ||
| test_get_tool_definitions_cache_isolation.py | ||
| test_hermes_constants.py | ||
| test_hermes_home_profile_warning.py | ||
| test_hermes_logging.py | ||
| test_hermes_state.py | ||
| test_honcho_client_config.py | ||
| test_install_sh_setup_wizard_tty_probe.py | ||
| test_ipv4_preference.py | ||
| test_mcp_serve.py | ||
| test_mini_swe_runner.py | ||
| test_minimax_model_validation.py | ||
| test_minimax_oauth.py | ||
| test_minisweagent_path.py | ||
| test_model_picker_scroll.py | ||
| test_model_tools_async_bridge.py | ||
| test_model_tools.py | ||
| test_ollama_num_ctx.py | ||
| test_packaging_metadata.py | ||
| test_plugin_skills.py | ||
| test_project_metadata.py | ||
| test_retry_utils.py | ||
| test_sql_injection.py | ||
| test_subprocess_home_isolation.py | ||
| test_timezone.py | ||
| test_toolset_distributions.py | ||
| test_toolsets.py | ||
| test_trajectory_compressor_async.py | ||
| test_trajectory_compressor.py | ||
| test_transform_tool_result_hook.py | ||
| test_tui_gateway_server.py | ||
| test_utils_truthy_values.py | ||
| test_yuanbao_integration.py | ||
| test_yuanbao_markdown.py | ||
| test_yuanbao_pipeline.py | ||
| test_yuanbao_proto.py | ||