Struct SystemRss 

pub struct SystemRss { /* private fields */ }

Live reader of the current process’s swappable memory footprint.

The reading counts anonymous and private copy-on-write pages, shared-memory pages (tmpfs, memfd, POSIX shm) and, where the platform reports them, pages already swapped out or compressed. Clean file-backed pages — memory-mapped immutable files, executable text, page cache faulted in by reads — are excluded: the kernel drops and refaults them from their file, so they can never cause swap. Plain resident-set size counts them, which lets a process that only maps a large file look like it is exhausting memory.

Platform	Measurement
Linux, Android	RssAnon + RssShmem + VmSwap from /proc/self/status
macOS, iOS	ri_phys_footprint from proc_pid_rusage
Windows	private commit charge (PrivateUsage)
other	resident-set size

Every read is a handful of system calls on a buffer reused across reads, cheap enough for once-per-second sampling.

Implementations

impl SystemRss

pub fn new() -> Self

Construct a reader bound to the current process.

Panics

Panics if the platform cannot identify the current process — a “cannot happen” condition.

Trait Implementations

impl Default for SystemRss

fn default() -> Self

Returns the “default value” for a type.

impl RssSource for SystemRss

fn read_rss_bytes(&self) -> u64

Current process memory in bytes.

fn total_ram_bytes(&self) -> u64

Installed system RAM in bytes. Used at startup when auto-deriving the budget target. Implementations must return a positive value.