Added wxYieldIfNeeded

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@9410 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk1/app.cpp

@@ -80,6 +80,8 @@ void wxExit()
 // wxYield
 //-----------------------------------------------------------------------------
 
+static bool gs_inYield = FALSE;
+
 bool wxYield()
 {
 #if wxUSE_THREADS
@@ -90,14 +92,12 @@ bool wxYield()
     }
 #endif // wxUSE_THREADS
 
-#ifdef __WXDEBUG__
-    static bool s_inYield = FALSE;
-    
-    if (s_inYield)
+#ifdef __WXDEBUG__    
+    if (gs_inYield)
         wxFAIL_MSG( wxT("wxYield called recursively" ) );
-    
-    s_inYield = TRUE;
 #endif
+    
+    gs_inYield = TRUE;
 
     if (!g_isIdle)
     {
@@ -123,13 +123,24 @@ bool wxYield()
     // let the logs be flashed again
     wxLog::Resume();
 
-#ifdef __WXDEBUG__
-    s_inYield = FALSE;
-#endif
+    gs_inYield = FALSE;
 
     return TRUE;
 }
 
+//-----------------------------------------------------------------------------
+// wxYieldIfNeeded
+// Like wxYield, but fails silently if the yield is recursive.
+//-----------------------------------------------------------------------------
+
+bool wxYieldIfNeeded()
+{
+    if (gs_inYield)
+        return FALSE;
+        
+    return wxYield();    
+}
+
 //-----------------------------------------------------------------------------
 // wxWakeUpIdle
 //-----------------------------------------------------------------------------