From: Matt Corallo <git@bluematt.me>
Date: Tue, 21 May 2019 15:07:53 +0000 (-0400)
Subject: Never run the scan loop more than once every 15 seconds
X-Git-Url: http://git.bitcoin.ninja/index.cgi?p=dnsseed-rust;a=commitdiff_plain;h=b2521170a57b654f8df69aacf8ccdfdb744d5172

Never run the scan loop more than once every 15 seconds
---

diff --git a/src/datastore.rs b/src/datastore.rs
index 6255cd4..18aa0e6 100644
--- a/src/datastore.rs
+++ b/src/datastore.rs
@@ -487,9 +487,9 @@ impl Store {
 		let cur_time = Instant::now();
 
 		let mut nodes = self.nodes.write().unwrap();
-		for (state, state_nodes) in nodes.state_next_scan.iter_mut() {
+		for (idx, (state, state_nodes)) in nodes.state_next_scan.iter_mut().enumerate() {
 			let cmp_time = cur_time - Duration::from_secs(self.get_u64(U64Setting::RescanInterval(*state)));
-			let split_point = cmp::min(cmp::min(results - res.len(), per_bucket_results),
+			let split_point = cmp::min(cmp::min(results - res.len(), results - (per_bucket_results * (AddressState::get_count() as usize - idx))),
 					state_nodes.binary_search_by(|a| a.0.cmp(&cmp_time)).unwrap_or_else(|idx| idx));
 			let mut new_nodes = state_nodes.split_off(split_point);
 			mem::swap(&mut new_nodes, state_nodes);
diff --git a/src/main.rs b/src/main.rs
index 2c4acee..e040b95 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -4,7 +4,7 @@ mod peer;
 mod timeout_stream;
 mod datastore;
 
-use std::env;
+use std::{cmp, env};
 use std::collections::HashMap;
 use std::sync::{Arc, Mutex};
 use std::sync::atomic::{Ordering, AtomicBool};
@@ -194,13 +194,14 @@ fn scan_net() {
 		let store = unsafe { DATA_STORE.as_ref().unwrap() };
 		let mut scan_nodes = store.get_next_scan_nodes();
 		let per_iter_time = Duration::from_millis(1000 / store.get_u64(U64Setting::ConnsPerSec));
-		let mut iter_time = Instant::now();
+		let start_time = Instant::now();
+		let mut iter_time = start_time;
 
 		for node in scan_nodes.drain(..) {
 			scan_node(iter_time, node);
 			iter_time += per_iter_time;
 		}
-		Delay::new(iter_time).then(|_| {
+		Delay::new(cmp::max(iter_time, start_time + Duration::from_secs(15))).then(|_| {
 			let store = unsafe { DATA_STORE.as_ref().unwrap() };
 			store.save_data().then(|_| {
 				if !START_SHUTDOWN.load(Ordering::Relaxed) {