Programmer ASCII Flowchart

/** * @verbatim * * <uninitialized> <--------------------------- WAIT_FOR_TASKS * | (init) ^ ^ * v | * CREATE_OBJECT * * * * * (error) UNREGISTER_WATCH * | * ^ * v * | * REGISTER_WATCH * * * * * SHUT_DOWN_STATUS_WATCHER * | * ^ * v * | * INIT_STATUS_WATCHER * * SHUT_DOWN_LEADER_LOCK * | * ^ * | * (no leader heartbeat and acquire failed) | * | | BREAK_LOCK <--------------------------| * | | (no leader heartbeat) | (shut down) * | | /--------------------------\ | * | | (lock released received) | * | | | /----------------------\ | * | | | (lock acquired or | * | | | heartbeat received) | * | | | (ENODENT) /-----------\ | * | | | * * * * * * * * * * | | * | | | v v v v v (error) v | * ACQUIRE_LEADER_LOCK * * * -> GET_LOCKER --> <secondary> * ....|....................*.................... ^ * v * . post_release * .INIT_INSTANCES * * * * * * .NOTIFY_LOCK_RELEASED * | * ....^........... * v * . * .NOTIFY_LISTENER * RELEASE_LEADER_LOCK * | * ^ * v * ....|........... * .NOTIFY_LOCK_ACQUIRED . SHUT_DOWN_INSTANCES * | post_acquire . ^ * |....................................... . | * <leader> -------------------------------> .NOTIFY_LISTENER * (shut down, release leader, pre_release * notify error) * @endverbatim */

This image shows a dense ASCII flowchart documenting a programmer-oriented locking and leader-election state machine. It traces initialization, lock acquisition and release, heartbeat failures, shutdown paths, notifications, and error handling. The joke is the exaggerated complexity of presenting ordinary program logic as an enormous wall of ASCII documentation, a reaction to overengineered code or programmers showing off their technical diagrams. EN: This image shows a dense ASCII flowchart documenting a programmer-oriented locking and leader-election state machine. It traces initialization, lock acquisition and release, heartbeat failures, shutdown paths, notifications, and error handling. The joke is the exaggerated complexity of presenting ordinary program logic as an enormous wall of ASCII documentation, a reaction to overengineered code or programmers showing off their technical diagrams.

• @profunctor_io / 1661 2019-02-14