X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning-net-tokio%2Fsrc%2Flib.rs;h=f7e42b6634147d405e2cfebe1278801940e0a771;hb=1fd6c6fb9f7e58e8c0cf6539e7a9451e57a2b6fd;hp=7082916fcdba75b733a364008a9c18c12e6d8ca4;hpb=65920818db58880f6576fd50c3ea5df273912978;p=rust-lightning

diff --git a/lightning-net-tokio/src/lib.rs b/lightning-net-tokio/src/lib.rs
index 7082916f..f7e42b66 100644
--- a/lightning-net-tokio/src/lib.rs
+++ b/lightning-net-tokio/src/lib.rs
@@ -120,11 +120,28 @@ struct Connection {
 	id: u64,
 }
 impl Connection {
+	async fn poll_event_process<CMH, RMH, L, UMH>(peer_manager: Arc<peer_handler::PeerManager<SocketDescriptor, Arc<CMH>, Arc<RMH>, Arc<L>, Arc<UMH>>>, mut event_receiver: mpsc::Receiver<()>) where
+			CMH: ChannelMessageHandler + 'static + Send + Sync,
+			RMH: RoutingMessageHandler + 'static + Send + Sync,
+			L: Logger + 'static + ?Sized + Send + Sync,
+			UMH: CustomMessageHandler + 'static + Send + Sync {
+		loop {
+			if event_receiver.recv().await.is_none() {
+				return;
+			}
+			peer_manager.process_events();
+		}
+	}
+
 	async fn schedule_read<CMH, RMH, L, UMH>(peer_manager: Arc<peer_handler::PeerManager<SocketDescriptor, Arc<CMH>, Arc<RMH>, Arc<L>, Arc<UMH>>>, us: Arc<Mutex<Self>>, mut reader: io::ReadHalf<TcpStream>, mut read_wake_receiver: mpsc::Receiver<()>, mut write_avail_receiver: mpsc::Receiver<()>) where
-			CMH: ChannelMessageHandler + 'static,
-			RMH: RoutingMessageHandler + 'static,
-			L: Logger + 'static + ?Sized,
-			UMH: CustomMessageHandler + 'static {
+			CMH: ChannelMessageHandler + 'static + Send + Sync,
+			RMH: RoutingMessageHandler + 'static + Send + Sync,
+			L: Logger + 'static + ?Sized + Send + Sync,
+			UMH: CustomMessageHandler + 'static + Send + Sync {
+		// Create a waker to wake up poll_event_process, above
+		let (event_waker, event_receiver) = mpsc::channel(1);
+		tokio::spawn(Self::poll_event_process(Arc::clone(&peer_manager), event_receiver));
+
 		// 8KB is nice and big but also should never cause any issues with stack overflowing.
 		let mut buf = [0; 8192];
 
@@ -175,7 +192,14 @@ impl Connection {
 					Err(_) => break Disconnect::PeerDisconnected,
 				},
 			}
-			peer_manager.process_events();
+			let _ = event_waker.try_send(());
+
+			// At this point we've processed a message or two, and reset the ping timer for this
+			// peer, at least in the "are we still receiving messages" context, if we don't give up
+			// our timeslice to another task we may just spin on this peer, starving other peers
+			// and eventually disconnecting them for ping timeouts. Instead, we explicitly yield
+			// here.
+			tokio::task::yield_now().await;
 		};
 		let writer_option = us.lock().unwrap().writer.take();
 		if let Some(mut writer) = writer_option {
@@ -443,6 +467,9 @@ impl peer_handler::SocketDescriptor for SocketDescriptor {
 					// pause read given we're now waiting on the remote end to ACK (and in
 					// accordance with the send_data() docs).
 					us.read_paused = true;
+					// Further, to avoid any current pending read causing a `read_event` call, wake
+					// up the read_waker and restart its loop.
+					let _ = us.read_waker.try_send(());
 					return written_len;
 				},
 			}