Added debug logging for #615

server/core/dcb.c

@@ -1119,6 +1119,10 @@ dcb_close(DCB *dcb)
 
         CHK_DCB(dcb);
 
+	LOGIF(LD, (skygw_log_write(LOGFILE_DEBUG,
+				"%lu [dcb_close]",
+				pthread_self())));                                
+	
         /*<
          * dcb_close may be called for freshly created dcb, in which case
          * it only needs to be freed.

server/modules/protocol/mysql_backend.c

@@ -1089,6 +1089,10 @@ gw_backend_close(DCB *dcb)
         session = dcb->session;
         CHK_SESSION(session);
 
+	LOGIF(LD, (skygw_log_write(LOGFILE_DEBUG,
+			"%lu [gw_backend_close]",
+			pthread_self())));                                
+	
         quitbuf = mysql_create_com_quit(NULL, 0);
         gwbuf_set_type(quitbuf, GWBUF_TYPE_MYSQL);
 

server/modules/protocol/mysql_client.c

@@ -1392,6 +1392,10 @@ gw_client_close(DCB *dcb)
                 CHK_PROTOCOL(protocol);
         }
 #endif
+	LOGIF(LD, (skygw_log_write(LOGFILE_DEBUG,
+				"%lu [gw_client_close]",
+				pthread_self())));                                
+
         mysql_protocol_done(dcb);
 
         session = dcb->session;

server/modules/routing/readwritesplit/readwritesplit.c

@@ -912,6 +912,10 @@ static void closeSession(
         ROUTER_CLIENT_SES* router_cli_ses;
         backend_ref_t*     backend_ref;
 
+	LOGIF(LD, (skygw_log_write(LOGFILE_DEBUG,
+			   "%lu [RWSplit:closeSession]",
+			    pthread_self())));                                
+	
         /** 
          * router session can be NULL if newSession failed and it is discarding
          * its connections and DCB's.