apply reftrack to PVField

src/factory/PVDataCreateFactory.cpp

@@ -24,6 +24,7 @@
 #include <pv/pvData.h>
 #include <pv/factory.h>
 #include <pv/serializeHelper.h>
+#include <pv/reftrack.h>
 
 using std::tr1::static_pointer_cast;
 using std::size_t;
@@ -607,7 +608,10 @@ PVDataCreatePtr PVDataCreate::getPVDataCreate()
     static Mutex mutex;
     Lock xx(mutex);
 
-    if(pvDataCreate.get()==0) pvDataCreate = PVDataCreatePtr(new PVDataCreate());
+    if(pvDataCreate.get()==0) {
+        registerRefCounter("PVField", &PVField::num_instances);
+        pvDataCreate = PVDataCreatePtr(new PVDataCreate());
+    }
     return pvDataCreate;
 }
 

src/factory/PVField.cpp

@@ -17,6 +17,7 @@
 #include <pv/lock.h>
 #include <pv/pvData.h>
 #include <pv/factory.h>
+#include <pv/reftrack.h>
 
 using std::tr1::const_pointer_cast;
 using std::size_t;
@@ -24,15 +25,20 @@ using std::string;
 
 namespace epics { namespace pvData {
 
+size_t PVField::num_instances;
+
 PVField::PVField(FieldConstPtr field)
 : parent(NULL),field(field),
   fieldOffset(0), nextFieldOffset(0),
   immutable(false)
 {
+    REFTRACE_INCREMENT(num_instances);
 }
 
 PVField::~PVField()
-{ }
+{
+    REFTRACE_DECREMENT(num_instances);
+}
 
 
 size_t PVField::getFieldOffset() const

src/pv/pvData.h

@@ -271,6 +271,7 @@ public:
     void copy(const PVField& from);
     void copyUnchecked(const PVField& from);
 
+    static size_t num_instances; // use atomic::get() or volatile* access
 protected:
     PVField::shared_pointer getPtrSelf()
     {