lttng rotate command

[lttng-tools.git] / include / lttng / session.h

diff --git a/include/lttng/session.h b/include/lttng/session.h
index 599892d13508d7470f829f6c89da84b18aea6b9c..7211eeec1ca11b7a3e4062148c00a9f7a46b92ad 100644 (file)
--- a/include/lttng/session.h
+++ b/include/lttng/session.h
@@ -162,6 +162,23 @@ extern int lttng_untrack_pid(struct lttng_handle *handle, int pid);
 extern int lttng_list_tracker_pids(struct lttng_handle *handle,
                int *enabled, int32_t **pids, size_t *nr_pids);
 
+/*
+ * Ask the session daemon where the data for this session is currently being
+ * written to. If rotations occured during a session, this call is useful to
+ * know the location of the last chunk.
+ *
+ * Return 0 and allocate chunk_path if rotations occured for this session, the
+ * caller needs to free chunk_path.
+ * Return 1 if no rotation occured during the session, chunk_path is left
+ * unallocated.
+ *
+ * Return a negative LTTng error code on error (readable with lttng_strerror).
+ *
+ * FIXME: Return an lttng_location object rather than a path.
+ */
+extern int lttng_session_get_current_archive_location(const char *session_name,
+               char **chunk_path);
+
 #ifdef __cplusplus
 }
 #endif