Rename filter string to filter expression in liblttng-ctl

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

diff --git a/include/lttng/event.h b/include/lttng/event.h
index 06a63ccba9dbb2626df9be08feb39707f0436d8b..b2e4b7d89751be6aa948dabab37bd6a336ae415d 100644 (file)
--- a/include/lttng/event.h
+++ b/include/lttng/event.h
@@ -261,7 +261,7 @@ struct lttng_event {
 
        /* Offset 288 */
        union {
-               char padding[8];
+               uint64_t padding;
                void *ptr;
        } extended;
 
@@ -295,6 +295,38 @@ struct lttng_event_field {
 extern int lttng_list_events(struct lttng_handle *handle,
                const char *channel_name, struct lttng_event **events);
 
+/*
+ * Get the filter expression of a specific LTTng event.
+ *
+ * If the call is successful, then the filter expression's address is put
+ * in *filter_expression. If the event has no filter expression,
+ * *filter_expression is set to NULL. The caller does NOT own
+ * *filter_expression.
+ *
+ * Returns 0 on success, or a negative LTTng error code on error.
+ */
+extern int lttng_event_get_filter_expression(struct lttng_event *event,
+               const char **filter_string);
+
+/*
+ * Get the number of exclusion names of a specific LTTng event.
+ *
+ * Returns the number of exclusion names on success, or a negative
+ * LTTng error code on error.
+ */
+extern int lttng_event_get_exclusion_name_count(struct lttng_event *event);
+
+/*
+ * Get an LTTng event's exclusion name at a given index.
+ *
+ * If the call is successful, then the exclusion name string's address
+ * is put in *exclusion_name. The caller does NOT own *exclusion_name.
+ *
+ * Returns 0 on success, or a negative LTTng error code on error.
+ */
+extern int lttng_event_get_exclusion_name(struct lttng_event *event,
+               size_t index, const char **exclusion_name);
+
 /*
  * List the available tracepoints of a specific lttng domain.
  *