From 80f7f88532f565e931b4a28521e5cd67444a4d54 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gerg=C5=91=20S=C3=A1lyi?= <salyigergo94@gmail.com>
Date: Wed, 26 Apr 2023 20:52:19 +0200
Subject: [PATCH] Fix panic when the process is suspended

In main event loop mio poll should immediately continue and retry on EINTR
https://github.com/gergo-salyi/multibg-sway/issues/1
---
 src/main.rs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/main.rs b/src/main.rs
index 8534ef2..9b81add 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -119,7 +119,14 @@ fn main()
         event_queue.dispatch_pending(&mut state).unwrap();
         let mut read_guard_option = Some(event_queue.prepare_read().unwrap());
 
-        poll.poll(&mut events, None).unwrap();
+        if let Err(poll_error) = poll.poll(&mut events, None) {
+            if poll_error.kind() == io::ErrorKind::Interrupted {
+                continue;
+            }
+            else {
+                panic!("Main event loop poll failed: {:?}", poll_error);
+            }
+        }
 
         for event in events.iter() {
             match event.token() {