direct ie non mutex crit-section implementation

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@27690 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/thread.h

@@ -209,7 +209,7 @@ private:
 
 // in order to avoid any overhead under platforms where critical sections are
 // just mutexes make all wxCriticalSection class functions inline
-#if !defined(__WXMSW__)
+#if !defined(__WXMSW__) && !defined(__WXMAC__)
     #define wxCRITSECT_IS_MUTEX 1
 
     #define wxCRITSECT_INLINE inline
@@ -261,6 +261,8 @@ private:
 
         wxCritSectBuffer m_buffer;
     };
+#elif defined(__WXMAC__)
+    void *m_critRegion ;
 #endif // Unix&OS2/Win32
 
     DECLARE_NO_COPY_CLASS(wxCriticalSection)