+#ifdef __WXMAC__
+
+ // implement wxCriticalSection using mutexes
+wxCriticalSection::wxCriticalSection( wxCriticalSectionType critSecType )
+ : m_mutex( critSecType == wxCRITSEC_DEFAULT ? wxMUTEX_RECURSIVE : wxMUTEX_DEFAULT ) { }
+wxCriticalSection::~wxCriticalSection() { }
+
+void wxCriticalSection::Enter() { (void)m_mutex.Lock(); }
+void wxCriticalSection::Leave() { (void)m_mutex.Unlock(); }
+
+#endif