parse-events: Add pevent_filter_reset()

Add function pevent_filter_reset() to reset and clear all
filters in an event_filter structure.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

2 files changed, 19 insertions, 3 deletions

diff --git a/parse-events.h b/parse-events.h
index 8e42947..13b1f3a 100644
--- a/parse-events.h
+++ b/parse-events.h
@@ -589,6 +589,8 @@ int pevent_filter_match(struct event_filter *filter,
 int pevent_event_filtered(struct event_filter *filter,
                           int event_id);
 
+void pevent_filter_reset(struct event_filter *filter);
+
 void pevent_filter_free(struct event_filter *filter);
 
 #endif /* _PARSE_EVENTS_H */
diff --git a/parse-filter.c b/parse-filter.c
index 98c31dd..1627b96 100644
--- a/parse-filter.c
+++ b/parse-filter.c
@@ -808,16 +808,30 @@ int pevent_filter_remove_event(struct event_filter *filter,
         return 1;
 }
 
-void pevent_filter_free(struct event_filter *filter)
+/**
+ * pevent_filter_reset - clear all filters in a filter
+ * @filter: the event filter to reset
+ *
+ * Removes all filters from a filter and resets it.
+ */
+void pevent_filter_reset(struct event_filter *filter)
 {
         int i;
 
-        pevent_unref(filter->pevent);
-
         for (i = 0; i < filter->filters; i++)
                 free_filter_type(&filter->event_filters[i]);
 
         free(filter->event_filters);
+        filter->filters = 0;
+        filter->event_filters = NULL;
+}
+
+void pevent_filter_free(struct event_filter *filter)
+{
+        pevent_unref(filter->pevent);
+
+        pevent_filter_reset(filter);
+
         free(filter);
 }