fix: don't display hostname if null

Signed-off-by: Julien Desfossez <jdesfossez@efficios.com>

diff --git a/src/lttngtop.c b/src/lttngtop.c
index 374f3e90c8d578ec71d6502f53438fd2d194c5c6..554406aba21582b6d61dff59ae9de5154377c86c 100644 (file)
--- a/src/lttngtop.c
+++ b/src/lttngtop.c
@@ -258,10 +258,17 @@ enum bt_cb_ret print_timestamp(struct bt_ctf_event *call_data, void *private_dat
                 * print the newline in this case */
                if (last_textdump_print_newline == 0)
                        printf("\n");
                 * print the newline in this case */
                if (last_textdump_print_newline == 0)
                        printf("\n");

-               printf("%02d:%02d:%02d.%09" PRIu64 " (%s) (cpu %d) [%s (%d)] %s (",
-                               start.tm_hour, start.tm_min, start.tm_sec,
-                               ts_nsec_start, hostname, cpu_id, procname, pid,
-                               bt_ctf_event_name(call_data));
+               if (hostname) {
+                       printf("%02d:%02d:%02d.%09" PRIu64 " (%s) (cpu %d) [%s (%d)] %s (",
+                                       start.tm_hour, start.tm_min, start.tm_sec,
+                                       ts_nsec_start, hostname, cpu_id, procname, pid,
+                                       bt_ctf_event_name(call_data));
+               } else {
+                       printf("%02d:%02d:%02d.%09" PRIu64 " (cpu %d) [%s (%d)] %s (",
+                                       start.tm_hour, start.tm_min, start.tm_sec,
+                                       ts_nsec_start, cpu_id, procname, pid,
+                                       bt_ctf_event_name(call_data));
+               }

                print_fields(call_data);
                printf(") ");
                if (strncmp(bt_ctf_event_name(call_data), "sys_", 4) != 0) {
                print_fields(call_data);
                printf(") ");
                if (strncmp(bt_ctf_event_name(call_data), "sys_", 4) != 0) {