/*
* Apply a filter expression to an event.
*
- * If event_name is NULL, the filter is applied to all events of the channel.
+ * If event is NULL, the filter is applied to all events of the channel.
* If channel_name is NULL, a lookup of the event's channel is done.
* If both are NULL, the filter is applied to all events of all channels.
*/
extern int lttng_set_event_filter(struct lttng_handle *handle,
- const char *event_name,
- const char *channel_name,
+ struct lttng_event *event, const char *channel_name,
const char *filter_expression);
+
/*
* Create or enable a channel.
* The channel name cannot be NULL.
/*
* For a given session name, this call checks if the data is ready to be read
- * or is still being extracted by the consumer(s) hence not ready to be used by
- * any readers.
+ * or is still being extracted by the consumer(s) (pending) hence not ready to
+ * be used by any readers.
*
- * Return 0 if the data is _NOT_ available else 1 if the data is ready. On
- * error, a negative value is returned and readable by lttng_strerror().
+ * Return 0 if there is _no_ data pending in the buffers thus having a
+ * guarantee that the data can be read safely. Else, return 1 if there is still
+ * traced data is pending. On error, a negative value is returned and readable
+ * by lttng_strerror().
*/
-extern int lttng_data_available(const char *session_name);
+extern int lttng_data_pending(const char *session_name);
#ifdef __cplusplus
}