Potential fix for a panic with time comparisons

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "bottom"
-version = "0.2.0"
+version = "0.1.2"
 authors = ["Clement Tsang <clementjhtsang@gmail.com>"]
 edition = "2018"
 repository = "https://github.com/ClementTsang/bottom"

src/app.rs

@@ -16,10 +16,11 @@ pub enum ApplicationPosition {
 	Process,
 }
 
+#[derive(Debug)]
 pub enum ScrollDirection {
-	/// UP means scrolling up --- this usually DECREMENTS
+	// UP means scrolling up --- this usually DECREMENTS
 	UP,
-	/// DOWN means scrolling down --- this usually INCREMENTS
+	// DOWN means scrolling down --- this usually INCREMENTS
 	DOWN,
 }
 

src/app/data_collection.rs

@@ -95,7 +95,6 @@ impl DataState {
 			self.sys.refresh_network();
 		}
 
-		// Filter out stale timed entries
 		let current_instant = std::time::Instant::now();
 
 		// What we want to do: For timed data, if there is an error, just do not add.  For other data, just don't update!
@@ -153,12 +152,14 @@ impl DataState {
 			self.first_run = false;
 		}
 
-		if current_instant.duration_since(self.last_clean).as_secs() > self.stale_max_seconds {
+		// Filter out stale timed entries
+		let clean_instant = Instant::now();
+		if clean_instant.duration_since(self.last_clean).as_secs() > self.stale_max_seconds {
 			let stale_list: Vec<_> = self
 				.prev_pid_stats
 				.iter()
 				.filter(|&(_, &v)| {
-					current_instant.duration_since(v.1).as_secs() > self.stale_max_seconds
+					clean_instant.duration_since(v.1).as_secs() > self.stale_max_seconds
 				})
 				.map(|(k, _)| k.clone())
 				.collect();
@@ -172,8 +173,7 @@ impl DataState {
 				.iter()
 				.cloned()
 				.filter(|entry| {
-					current_instant.duration_since(entry.instant).as_secs()
-						<= self.stale_max_seconds
+					clean_instant.duration_since(entry.instant).as_secs() <= self.stale_max_seconds
 				})
 				.collect::<Vec<_>>();
 
@@ -183,8 +183,7 @@ impl DataState {
 				.iter()
 				.cloned()
 				.filter(|entry| {
-					current_instant.duration_since(entry.instant).as_secs()
-						<= self.stale_max_seconds
+					clean_instant.duration_since(entry.instant).as_secs() <= self.stale_max_seconds
 				})
 				.collect::<Vec<_>>();
 
@@ -194,8 +193,7 @@ impl DataState {
 				.iter()
 				.cloned()
 				.filter(|entry| {
-					current_instant.duration_since(entry.instant).as_secs()
-						<= self.stale_max_seconds
+					clean_instant.duration_since(entry.instant).as_secs() <= self.stale_max_seconds
 				})
 				.collect::<Vec<_>>();
 
@@ -205,8 +203,7 @@ impl DataState {
 				.iter()
 				.cloned()
 				.filter(|entry| {
-					current_instant.duration_since(entry.instant).as_secs()
-						<= self.stale_max_seconds
+					clean_instant.duration_since(entry.instant).as_secs() <= self.stale_max_seconds
 				})
 				.collect::<Vec<_>>();
 
@@ -216,12 +213,11 @@ impl DataState {
 				.iter()
 				.cloned()
 				.filter(|entry| {
-					current_instant.duration_since(entry.instant).as_secs()
-						<= self.stale_max_seconds
+					clean_instant.duration_since(entry.instant).as_secs() <= self.stale_max_seconds
 				})
 				.collect::<Vec<_>>();
 
-			self.last_clean = current_instant;
+			self.last_clean = clean_instant;
 		}
 	}
 }

src/canvas.rs

@@ -974,6 +974,11 @@ fn get_start_position(
 	num_rows: i64, scroll_direction: &app::ScrollDirection, previous_position: &mut i64,
 	currently_selected_position: &mut i64,
 ) -> i64 {
+	debug!("Scroll direction: {:?}", scroll_direction);
+	debug!(
+		"Prev: {}, curr: {}",
+		*previous_position, *currently_selected_position
+	);
 	match scroll_direction {
 		app::ScrollDirection::DOWN => {
 			if *currently_selected_position < num_rows {

src/main.rs

@@ -150,14 +150,14 @@ fn main() -> error::Result<()> {
 			loop {
 				if let Ok(event) = event::read() {
 					if let CEvent::Key(key) = event {
-						if Instant::now().duration_since(keyboard_timer).as_millis() >= 30 {
+						if Instant::now().duration_since(keyboard_timer).as_millis() >= 20 {
 							if tx.send(Event::KeyInput(key)).is_err() {
 								return;
 							}
 							keyboard_timer = Instant::now();
 						}
 					} else if let CEvent::Mouse(mouse) = event {
-						if Instant::now().duration_since(mouse_timer).as_millis() >= 30 {
+						if Instant::now().duration_since(mouse_timer).as_millis() >= 20 {
 							if tx.send(Event::MouseInput(mouse)).is_err() {
 								return;
 							}