[td-1391] refactor

src/client/src/tscSql.c

@@ -286,9 +286,11 @@ void taos_close(TAOS *taos) {
   assert(ref >= 0);
 
   if (ref > 0) {
+    tscDebug("%p %d remain sqlObjs, do not close dnodeConn:%p", pObj, ref, pObj->pDnodeConn);
     return;
   }
 
+  tscDebug("%p all sqlObj are freed, free tscObj, dnodeConn:%p", pObj, pObj->pDnodeConn);
   tscCloseTscObj(pObj);
 }
 

src/client/src/tscUtil.c

@@ -772,6 +772,7 @@ void tscCloseTscObj(STscObj* pObj) {
   pObj->signature = NULL;
   taosTmrStopA(&(pObj->pTimer));
 
+  void* p = pObj->pDnodeConn;
   if (pObj->pDnodeConn != NULL) {
     rpcClose(pObj->pDnodeConn);
     pObj->pDnodeConn = NULL;
@@ -779,7 +780,7 @@ void tscCloseTscObj(STscObj* pObj) {
 
   pthread_mutex_destroy(&pObj->mutex);
 
-  tscDebug("%p DB connection is closed, dnodeConn:%p", pObj, pObj->pDnodeConn);
+  tscDebug("%p DB connection is closed, dnodeConn:%p", pObj, p);
   taosTFree(pObj);
 }