Module resource 

Structs

RssPeakSampler

Background thread polls RSS while an export runs so peak_rss_mb reflects in-process highs, not only values at start/end (which often miss parallel workers’ allocations).

Semaphore

Counting semaphore built on Mutex + Condvar so blocked acquirers park in the kernel rather than spinning on an atomic.

Functions

check_memory

get_rss_mb

Returns the current process RSS in megabytes, or 0 if unavailable.