convert sw/ObservableThread to salhelper::SimpleReferenceObject

instead of re-implementing it's own reference counting

Change-Id: I2600b970544f1dfd84b987d1891c79e3c377bd1b

sw/source/core/docnode/observablethread.cxx

@@ -25,8 +25,7 @@
    #i73788#
 */
 ObservableThread::ObservableThread()
-    : mnRefCount( 0 ),
-      mnThreadID( 0 ),
+    : mnThreadID( 0 ),
       mpThreadListener()
 {
 }
@@ -35,19 +34,6 @@ ObservableThread::~ObservableThread()
 {
 }
 
-oslInterlockedCount ObservableThread::acquire()
-{
-    return osl_atomic_increment( &mnRefCount );
-}
-
-oslInterlockedCount ObservableThread::release()
-{
-    oslInterlockedCount nCount( osl_atomic_decrement( &mnRefCount ) );
-    if ( nCount == 0 )
-        delete this;
-    return nCount;
-}
-
 void ObservableThread::SetListener( boost::weak_ptr< IFinishedThreadListener > pThreadListener,
                                     const oslInterlockedCount nThreadID )
 {

sw/source/core/inc/observablethread.hxx

@@ -25,6 +25,7 @@
 
 #include <boost/weak_ptr.hpp>
 #include <ithreadlistenerowner.hxx>
+#include <salhelper/simplereferenceobject.hxx>
 
 /** class for an observable thread
 
@@ -37,7 +38,7 @@
     to notify, that the thread has finished its work.
 */
 class ObservableThread : public osl::Thread,
-                         public rtl::IReference
+                         public salhelper::SimpleReferenceObject
 {
     public:
 
@@ -46,9 +47,11 @@ class ObservableThread : public osl::Thread,
         void SetListener( boost::weak_ptr< IFinishedThreadListener > pThreadListener,
                           const oslInterlockedCount nThreadID );
 
-        // IReference
-        virtual oslInterlockedCount SAL_CALL acquire() SAL_OVERRIDE;
-        virtual oslInterlockedCount SAL_CALL release() SAL_OVERRIDE;
+        static inline void * operator new(std::size_t size)
+        { return SimpleReferenceObject::operator new(size); }
+
+        static inline void operator delete(void * pointer)
+        { SimpleReferenceObject::operator delete(pointer); }
 
     protected:
 
@@ -79,8 +82,6 @@ class ObservableThread : public osl::Thread,
 
     private:
 
-        oslInterlockedCount mnRefCount;
-
         oslInterlockedCount mnThreadID;
 
         boost::weak_ptr< IFinishedThreadListener > mpThreadListener;