+/*
+ * Validate that the id has reached the maximum allowed or not.
+ *
+ * Return 0 if NOT else 1.
+ */
+static inline int trace_ust_is_max_id(uint64_t id)
+{
+ return (id == UINT64_MAX) ? 1 : 0;
+}
+
+/*
+ * Return next available channel id and increment the used counter. The
+ * trace_ust_is_max_id function MUST be called before in order to validate if
+ * the maximum number of IDs have been reached. If not, it is safe to call this
+ * function.
+ *
+ * Return a unique channel ID. If max is reached, the used_channel_id counter
+ * is returned.
+ */
+static inline uint64_t trace_ust_get_next_chan_id(struct ltt_ust_session *s)
+{
+ if (trace_ust_is_max_id(s->used_channel_id)) {
+ return s->used_channel_id;
+ }
+
+ s->used_channel_id++;
+ return s->next_channel_id++;
+}
+