Struct AppState 

pub struct AppState {
    pub session: Arc<RwLock<NotebookSession>>,
    pub kill_handle: Arc<Mutex<Option<ExecutorKillHandle>>>,
    pub interrupted: InterruptFlag,
}

Application state shared across handlers.

Fields

session: Arc<RwLock<NotebookSession>>

Active notebook session.

kill_handle: Arc<Mutex<Option<ExecutorKillHandle>>>

Kill handle for interrupting execution without holding session lock. This is separate from the session so interrupt can work even when execute_cell is holding the write lock.

interrupted: InterruptFlag

Flag to track if execution was interrupted by user. Uses AtomicBool so it can be checked without locks.