Live timer set up

[lttng-tools.git] / src / lib / lttng-ctl / lttng-ctl.c

diff --git a/src/lib/lttng-ctl/lttng-ctl.c b/src/lib/lttng-ctl/lttng-ctl.c
index 033a28105ef6744f464434c32ad0f01b2ada889c..bff522201233db0a5e6551e160becfb78a0e1260 100644 (file)
--- a/src/lib/lttng-ctl/lttng-ctl.c
+++ b/src/lib/lttng-ctl/lttng-ctl.c
@@ -574,6 +574,7 @@ static int _lttng_stop_tracing(const char *session_name, int wait)
        }
 
        _MSG("Waiting for data availability");
+       fflush(stdout);
 
        /* Check for data availability */
        do {
@@ -591,6 +592,7 @@ static int _lttng_stop_tracing(const char *session_name, int wait)
                if (data_ret) {
                        usleep(DEFAULT_DATA_AVAILABILITY_WAIT_TIME);
                        _MSG(".");
+                       fflush(stdout);
                }
        } while (data_ret != 0);
 
@@ -1594,6 +1596,51 @@ int lttng_create_session_snapshot(const char *name, const char *snapshot_url)
        return ret;
 }
 
+/*
+ * Create a session exclusively used for live.
+ *
+ * Returns LTTNG_OK on success or a negative error code.
+ */
+int lttng_create_session_live(const char *name, const char *url,
+               unsigned int timer_interval)
+{
+       int ret;
+       ssize_t size;
+       struct lttcomm_session_msg lsm;
+       struct lttng_uri *uris = NULL;
+
+       if (name == NULL) {
+               return -LTTNG_ERR_INVALID;
+       }
+
+       memset(&lsm, 0, sizeof(lsm));
+
+       lsm.cmd_type = LTTNG_CREATE_SESSION_LIVE;
+       lttng_ctl_copy_string(lsm.session.name, name, sizeof(lsm.session.name));
+
+       size = uri_parse_str_urls(url, NULL, &uris);
+       if (size < 0) {
+               ret = -LTTNG_ERR_INVALID;
+               goto end;
+       }
+
+       /* file:// is not accepted for live session. */
+       if (uris[0].dtype == LTTNG_DST_PATH) {
+               ret = -LTTNG_ERR_INVALID;
+               goto end;
+       }
+
+       lsm.u.session_live.nb_uri = size;
+       lsm.u.session_live.timer_interval = timer_interval;
+
+       ret = lttng_ctl_ask_sessiond_varlen(&lsm, uris,
+                       sizeof(struct lttng_uri) * size, NULL);
+
+end:
+       free(uris);
+       return ret;
+}
+
 /*
  * lib constructor
  */