Add ust start trace feature

[lttng-tools.git] / lttng / lttng.c

diff --git a/lttng/lttng.c b/lttng/lttng.c
index 9751621ff84f2c4fceb2267c5dd1b1ec6f83e1ae..e538df2fd403f0eefaf2be2c58b3c8a04973067d 100644 (file)
--- a/lttng/lttng.c
+++ b/lttng/lttng.c
@@ -96,6 +96,7 @@ static int process_client_opt(void)
        }
 
        if (opt_session_uuid != NULL) {
+               DBG("Set session uuid to %s", opt_session_uuid);
                lttng_set_current_session_uuid(opt_session_uuid);
        }
 
@@ -108,6 +109,15 @@ static int process_client_opt(void)
                MSG("Trace created successfully!\nUse --start PID to start tracing.");
        }
 
+       if (opt_start_trace) {
+               DBG("Start trace for pid %d", opt_start_trace);
+               ret = lttng_ust_start_trace(opt_start_trace);
+               if (ret < 0) {
+                       goto end;
+               }
+               MSG("Trace started successfully!");
+       }
+
        return 0;
 
 end:
@@ -255,8 +265,8 @@ not_running:
 static int validate_options(void)
 {
        if ((opt_session_uuid == NULL) &&
-                       (opt_create_trace)) {
-               ERR("Can't create trace without a session ID.\nPlease specify using --session UUID");
+                       (opt_create_trace || opt_start_trace)) {
+               ERR("Can't act on trace without a session ID.\nPlease specify using --session UUID");
                goto error;
        }
 
@@ -400,15 +410,17 @@ end:
  */
 static void sighandler(int sig)
 {
-       DBG("%d received", sig);
        switch (sig) {
                case SIGTERM:
+                       DBG("SIGTERM catched");
                        clean_exit(EXIT_FAILURE);
                        break;
                case SIGCHLD:
                        /* Notify is done */
+                       DBG("SIGCHLD catched");
                        break;
                default:
+                       DBG("Unknown signal %d catched", sig);
                        break;
        }