Module diagnostics 

Lightweight process diagnostics (FD count, RSS). Lightweight process diagnostics via /proc/self.

These helpers are designed for periodic logging inside real-time loops. They perform a single read per call and are cheap on Linux.

Functions

count_open_fds

Count open file descriptors by reading /proc/self/fd.

get_rss_kb

Return resident set size in KiB by reading /proc/self/statm.