X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/77ffb5937e89927b621128789401db8921fe580f..814af667d9f1e31d9f54759b4e406209b1a3250f:/src/mac/carbon/thread.cpp

diff --git a/src/mac/carbon/thread.cpp b/src/mac/carbon/thread.cpp
index ad7f278ff9..6c477b3685 100644
--- a/src/mac/carbon/thread.cpp
+++ b/src/mac/carbon/thread.cpp
@@ -7,7 +7,7 @@
 // RCS-ID:	$Id$
 // Copyright:	(c) Wolfram Gloger (1996, 1997); Guilhem Lavaux (1998),
 //		    Vadim Zeitlin (1999) , Stefan Csomor (2000)
-// Licence:	wxWidgets licence
+// Licence:	wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 #ifdef __GNUG__
@@ -114,16 +114,40 @@ MPCriticalRegionID gs_guiCritical = kInvalidID;
     to use two indices one for each 32 bit part as the MP implementation is limited
     to longs.
     
-    I have two implementations for mutexes :
+    I have three implementations for mutexes :
     version A based on a binary semaphore, problem - not reentrant, version B based 
     on a critical region, allows for reentrancy, performance implications not
-    yet tested
+    yet tested, and third a plain pthreads implementation
 
     The same for condition internal, one implementation by Aj Lavin and the other one
     copied from the thrimpl.cpp which I assume has been more broadly tested, I've just
     replaced the interlock increment with the appropriate PPC calls 
 */
 
+// ----------------------------------------------------------------------------
+// wxCriticalSection
+// ----------------------------------------------------------------------------
+
+wxCriticalSection::wxCriticalSection()
+{
+    MPCreateCriticalRegion( (MPCriticalRegionID*) &m_critRegion ) ;
+}
+
+wxCriticalSection::~wxCriticalSection()
+{
+    MPDeleteCriticalRegion( (MPCriticalRegionID) m_critRegion ) ;
+}
+
+void wxCriticalSection::Enter()
+{
+    MPEnterCriticalRegion( (MPCriticalRegionID) m_critRegion , kDurationForever ) ;
+}    
+
+void wxCriticalSection::Leave()
+{
+    MPExitCriticalRegion((MPCriticalRegionID) m_critRegion ) ;
+}
+
 // ----------------------------------------------------------------------------
 // wxMutex implementation
 // ----------------------------------------------------------------------------
@@ -1630,6 +1654,11 @@ void wxThreadModule::OnExit()
 {
     if ( gs_critsectGui )
     {
+        if ( !wxGuiOwnedByMainThread() )
+        {
+            gs_critsectGui->Enter();
+            gs_bGuiOwnedByMainThread = true;
+        }
         gs_critsectGui->Leave();
         delete gs_critsectGui;
         gs_critsectGui = NULL;