sequence type: use previous field for length if length_name is NULL

[lttng-ust.git] / include / lttng / ust-events.h

diff --git a/include/lttng/ust-events.h b/include/lttng/ust-events.h
index cae9e71a55ef1cecbc2ebbc9b3e06222e6ddbb98..6920306846f2bc273d883b027403d97281492adb 100644 (file)
--- a/include/lttng/ust-events.h
+++ b/include/lttng/ust-events.h
@@ -193,7 +193,7 @@ struct lttng_ust_type_array {
 struct lttng_ust_type_sequence {
        struct lttng_ust_type_common parent;
        uint32_t struct_size;
-       const char *length_name;        /* Length field name. */
+       const char *length_name;        /* Length field name. If NULL, use previous field. */
        const struct lttng_ust_type_common *elem_type;
        unsigned int alignment;         /* Minimum alignment before elements. */
        enum lttng_ust_string_encoding encoding;