instance counter for # of live workers

src/evhelper.cpp

@@ -163,6 +163,7 @@ struct evbase::Pvt : public epicsThreadRunable
 
     virtual void run() override final
     {
+        INST_COUNTER(evbaseRunning);
         try {
             decltype (base) tbase(event_base_new());
             if(evthread_make_base_notifiable(tbase.get())) {

src/util.cpp

@@ -62,6 +62,7 @@ CASE(StructTop);
 
 CASE(UDPListener);
 CASE(evbase);
+CASE(evbaseRunning);
 
 CASE(GPROp);
 CASE(Connection);

src/utilpvt.h

@@ -298,6 +298,7 @@ CASE(StructTop);
 
 CASE(UDPListener);
 CASE(evbase);
+CASE(evbaseRunning);
 
 CASE(GPROp);
 CASE(Connection);