Make tag index thread-safe

KSP-CKAN · Oct 6, 2023 · eb3045e · eb3045e
1 parent b90be25
commit eb3045e
Showing 1 changed file with 12 additions and 4 deletions.
diff --git a/Core/Registry/Registry.cs b/Core/Registry/Registry.cs
@@ -712,9 +712,12 @@ public Dictionary<string, ModuleTag> Tags
         {
             get
             {
-                if (tags == null)
+                lock (tagMutex)
                 {
-                    BuildTagIndex();
+                    if (tags == null)
+                    {
+                        BuildTagIndex();
+                    }
                 }
                 return tags;
             }
@@ -725,14 +728,19 @@ public HashSet<string> Untagged
         {
             get
             {
-                if (untagged == null)
+                lock (tagMutex)
                 {
-                    BuildTagIndex();
+                    if (untagged == null)
+                    {
+                        BuildTagIndex();
+                    }
                 }
                 return untagged;
             }
         }
 
+        private object tagMutex = new object();
+
         /// <summary>
         /// Assemble a mapping from tags to modules
         /// </summary>