From c2156f12ff40f5aaf1c08d42bee0cf990a9be2bc Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Tue, 4 Sep 2007 12:38:42 +0000
Subject: [PATCH] Added mutex to DefaultFont::instance().

---
 src/osgText/DefaultFont.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/osgText/DefaultFont.cpp b/src/osgText/DefaultFont.cpp
index 73205782d..d52ad21a6 100644
--- a/src/osgText/DefaultFont.cpp
+++ b/src/osgText/DefaultFont.cpp
@@ -20,6 +20,7 @@
 
 using namespace osgText;
 
+
 DefaultFont::DefaultFont()
 {
     _minFilterHint = osg::Texture::LINEAR_MIPMAP_LINEAR;
@@ -33,6 +34,9 @@ DefaultFont::~DefaultFont()
 
 DefaultFont* DefaultFont::instance()
 {
+    static OpenThreads::Mutex s_DefaultFontMutex;    
+    OpenThreads::ScopedLock<OpenThreads::Mutex> lock(s_DefaultFontMutex);
+
     static osg::ref_ptr<DefaultFont> s_defaultFont = new DefaultFont;
     return s_defaultFont.get();
 }