From bbc850997cd095188127d971f6cb90052615849a Mon Sep 17 00:00:00 2001
From: Andrey Kleshchev <117672381+akleshchev@users.noreply.github.com>
Date: Mon, 4 May 2026 23:31:14 +0300
Subject: #5756 Improve LLUICtrlFactory's performance

---
 indra/llui/lluictrlfactory.cpp |  2 +-
 indra/llui/lluictrlfactory.h   | 11 ++++++++---
 indra/newview/llappviewer.cpp  |  2 ++
 3 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/indra/llui/lluictrlfactory.cpp b/indra/llui/lluictrlfactory.cpp
index 33ffc3dfc6..740f187ed8 100644
--- a/indra/llui/lluictrlfactory.cpp
+++ b/indra/llui/lluictrlfactory.cpp
@@ -67,7 +67,7 @@ public:
 static LLDefaultChildRegistry::Register<LLUICtrlLocate> r1("locate");
 
 // Build time optimization, generate this once in .cpp file
-template class LLUICtrlFactory* LLSingleton<class LLUICtrlFactory>::getInstance();
+template class LLUICtrlFactory* LLSimpleton<class LLUICtrlFactory>::getInstance();
 
 //-----------------------------------------------------------------------------
 // LLUICtrlFactory()
diff --git a/indra/llui/lluictrlfactory.h b/indra/llui/lluictrlfactory.h
index f44b4ba4dc..75cee5f004 100644
--- a/indra/llui/lluictrlfactory.h
+++ b/indra/llui/lluictrlfactory.h
@@ -81,12 +81,13 @@ class LLWidgetNameRegistry
 
 // Build time optimization, generate this once in .cpp file
 #ifndef LLUICTRLFACTORY_CPP
-extern template class LLUICtrlFactory* LLSingleton<class LLUICtrlFactory>::getInstance();
+extern template class LLUICtrlFactory* LLSimpleton<class LLUICtrlFactory>::getInstance();
 #endif
 
-class LLUICtrlFactory : public LLSingleton<LLUICtrlFactory>
+class LLUICtrlFactory : public LLSimpleton<LLUICtrlFactory>
 {
-    LLSINGLETON(LLUICtrlFactory);
+public:
+    LLUICtrlFactory();
     ~LLUICtrlFactory();
 
     // only partial specialization allowed in inner classes, so use extra dummy parameter
@@ -313,6 +314,10 @@ template<typename T>
 LLChildRegistry<DERIVED>::Register<T>::Register(const char* tag, LLWidgetCreatorFunc func)
 :   LLChildRegistry<DERIVED>::StaticRegistrar(tag, func == nullptr ? (LLWidgetCreatorFunc)&LLUICtrlFactory::defaultBuilder<T> : func)
 {
+    if (!LLUICtrlFactory::instanceExists())
+    {
+        LLUICtrlFactory::createInstance();
+    }
     // add this widget to various registries
     LLUICtrlFactory::instance().registerWidget(typeid(T), typeid(typename T::Params), tag);
 
diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index bae9749772..8343cc3218 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -2183,6 +2183,8 @@ bool LLAppViewer::cleanup()
     // deleteSingleton() methods.
     LLSingletonBase::deleteAll();
 
+    LLUICtrlFactory::deleteSingleton();
+
     LLSplashScreen::hide();
 
     LL_INFOS() << "Goodbye!" << LL_ENDL;
-- 
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