Add JackWinCriticalSection class.

git-svn-id: http://subversion.jackaudio.org/jack/jack2/trunk/jackmp@4748 0c269be4-1314-0410-8aa9-9f06e86f4224

windows/JackWinMutex.cpp

@@ -88,6 +88,24 @@ namespace Jack
     {
         return(ReleaseMutex(fMutex) != 0);
     }
+    
+    bool JackWinCriticalSection::Lock()
+    {
+        EnterCriticalSection(&fSection);
+        return true;
+    }
+
+    bool JackWinCriticalSection::Trylock()
+    {
+        return (TryEnterCriticalSection(&fSection));
+    }
+
+    bool JackWinCriticalSection::Unlock()
+    {
+        LeaveCriticalSection(&fSection);
+        return true;
+    }
+
 
 
 } // namespace

windows/JackWinMutex.h

@@ -89,6 +89,31 @@ class SERVER_EXPORT JackWinMutex
 
 };
 
+class SERVER_EXPORT JackWinCriticalSection
+{
+
+    protected:
+
+        LPCRITICAL_SECTION fSection;
+
+    public:
+
+        JackWinCriticalSection(const char* name = NULL)
+        {
+            InitializeCriticalSection(&fSection);
+        }
+
+        virtual ~JackWinCriticalSection()
+        {
+            DeleteCriticalSection(&fSection);
+        }
+
+        bool Lock();
+        bool Trylock();
+        bool Unlock();
+
+};
+
 
 } // namespace
 

windows/JackWinProcessSync.h

@@ -30,7 +30,8 @@ namespace Jack
 \brief  A synchronization primitive built using a condition variable.
 */
 
-class JackWinProcessSync : public JackWinMutex
+//class JackWinProcessSync : public JackWinMutex
+class JackWinProcessSync : public JackWinCriticalSection
 {
 
     private: