+/*
+ * Application context callback private data
+ *
+ * IMPORTANT: this structure is part of the ABI between the probe and
+ * UST. Fields need to be only added at the end, never reordered, never
+ * removed.
+ *
+ * The field @struct_size should be used to determine the size of the
+ * structure. It should be queried before using additional fields added
+ * at the end of the structure.
+ */
+
+struct lttng_ust_app_context {
+ uint32_t struct_size;
+
+ struct lttng_ust_event_field *event_field;
+ char *ctx_name;
+
+ /* End of base ABI. Fields below should be used after checking struct_size. */
+};
+