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c835448908
Follow-up hardening on @ehz0ah / @harshitAgr's session-switch work (#28296): - on_session_switch no longer runs the old-session writer-drain + pending-token GET + commit POST inline on the caller's command thread. /new, /branch, /resume, /undo call it synchronously, so a slow drain (up to 10s) or wedged commit blocked the user-facing command — the same hazard #41945 fixed for end-of-turn sync. State now rotates synchronously (cheap) and the old-session commit is offloaded to a daemon finalizer (generalized _finalize_session_async). - Guard the (_session_id, _turn_count) pair with _session_state_lock: sync_turn runs on the memory-manager executor thread while the session hooks run on the command thread, so the snapshot+reset vs increment was a cross-thread race. - _session_needs_commit checks the committed-session guard BEFORE the turn_count>0 shortcut, closing a double-commit window when a racing sync_turn re-increments after commit+reset. - Add a _shutting_down flag so deferred finalizers stop POSTing against a torn-down client; track all prefetch threads in a set so invalidate/shutdown join every one, not just the latest slot. Tests: regression for the non-blocking switch (asserts the caller returns while a slow drain is parked off-thread) and the committed-guard ordering; updated the deferred-commit test to the unified finalizer contract. |
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| byterover | ||
| hindsight | ||
| holographic | ||
| honcho | ||
| mem0 | ||
| openviking | ||
| retaindb | ||
| supermemory | ||
| __init__.py | ||