From aacdcad5297f81abe5e76c0caa31b1b9d1a27c83 Mon Sep 17 00:00:00 2001
From: fredb <fredb>
Date: Mon, 29 Jan 2007 08:19:13 +0000
Subject: [PATCH] restore 'double checked locking'

---
 simgear/scene/model/shadanim.cxx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/simgear/scene/model/shadanim.cxx b/simgear/scene/model/shadanim.cxx
index b631c7d5..60b4d3f9 100644
--- a/simgear/scene/model/shadanim.cxx
+++ b/simgear/scene/model/shadanim.cxx
@@ -126,7 +126,9 @@ private:
 static osg::TextureCubeMap*
 getOrCreateTextureCubeMap()
 {
-   static osg::ref_ptr<osg::TextureCubeMap> textureCubeMap;
+  static osg::ref_ptr<osg::TextureCubeMap> textureCubeMap;
+  if (textureCubeMap.get())
+    return textureCubeMap.get();
 
   static SGMutex mutex;
   SGGuard<SGMutex> locker(mutex);
-- 
2.39.5