➕ linux-only memory measurement

crates/ptth_relay/src/scraper_api.rs

@@ -249,6 +249,20 @@ pub async fn handle (
 	}
 }
 
+fn get_rss_from_status (proc_status: &str) -> Option <u64>
+{
+	use std::str::FromStr;
+	
+	for line in proc_status.lines () {
+		if let Some (rest) = line.strip_prefix ("VmRSS:\t").and_then (|s| s.strip_suffix (" kB")) 
+		{
+			return u64::from_str (rest.trim_start ()).ok ();
+		}
+	}
+	
+	None
+}
+
 #[cfg (test)]
 mod tests {
 	use std::{
@@ -425,4 +439,11 @@ mod tests {
 			
 		});
 	}
+	
+	#[test]
+	fn rss () {
+		let input = "VmHWM:	584 kB\nVmRSS:	  584 kB\nRssAnon:	  68 kB\n";
+		
+		assert_eq! (get_rss_from_status (input), Some (584));
+	}
 }