Module process_tree 

Process tree traversal: BFS from a root PID to collect all descendant PIDs. Used by the sysinfo loop to aggregate CPU/memory across entire process trees.

Constants

MAX_PIDS_PER_BLOCK

Maximum number of PIDs to track per block (safety cap against pathological trees).

Functions

collect_descendants

Returns the root PID plus all descendant PIDs via BFS, capped at max_pids.