From 7e56fafe31dd4c5720feb9e543d37176f672aee8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Max=20=E2=80=9CGoldstein=E2=80=9D=20Siling?=
 <root@goldstein.rs>
Date: Fri, 11 Aug 2023 16:38:12 +0300
Subject: [PATCH] fix(core/supervisor): pre-spawn actors in Multicast to avoid
 deadlock (#105)

---
 elfo-core/src/supervisor.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/elfo-core/src/supervisor.rs b/elfo-core/src/supervisor.rs
index e398fe1d..0d801315 100644
--- a/elfo-core/src/supervisor.rs
+++ b/elfo-core/src/supervisor.rs
@@ -226,7 +226,12 @@ where
                 None => visitor.empty(envelope),
             },
             Outcome::Multicast(list) => {
-                let iter = list.into_iter().filter_map(|key| get_or_spawn!(self, key));
+                for key in list.iter() {
+                    if !self.objects.contains_key(key) {
+                        get_or_spawn!(self, key.clone());
+                    }
+                }
+                let iter = list.into_iter().filter_map(|key| self.objects.get(&key));
                 self.visit_multiple(envelope, visitor, iter);
             }
             Outcome::GentleMulticast(list) => {