From 238769f5eb38ad8397ec783cfb4640d4524efd84 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pavel=20Czern=C3=BD?= <pczerny@opennebula.systems>
Date: Wed, 12 Aug 2020 11:37:28 +0200
Subject: [PATCH] F #4936: Execute listener action outside lock (#148)

---
 include/Listener.h | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/include/Listener.h b/include/Listener.h
index ab0ebcf6d6..e7ef825d04 100644
--- a/include/Listener.h
+++ b/include/Listener.h
@@ -162,19 +162,23 @@ protected:
     {
         end = false;
 
-        std::unique_lock<std::mutex> ul(lock);
-
         while (true)
         {
-            cond.wait(ul, [&]{return (end || !pending.empty());});
+            std::function<void()> fn;
 
-            if (end)
             {
-                break;
-            }
+                std::unique_lock<std::mutex> ul(lock);
 
-            auto fn = pending.front();
-            pending.pop();
+                cond.wait(ul, [&]{return (end || !pending.empty());});
+
+                if (end)
+                {
+                    break;
+                }
+
+                fn = pending.front();
+                pending.pop();
+            }
 
             fn();
         }