events: Add a cleanup function

Add events to the watch list allocates memory. Add a cleanup function to
free all memory at cleanup time without having to remove all events
explicitly one by one.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

2 files changed, 12 insertions, 0 deletions

diff --git a/events.c b/events.c
index dba054a..90d81c3 100644
--- a/events.c
+++ b/events.c
@@ -181,3 +181,14 @@ void events_init(struct events *events)
 	events->maxfd = 0;
 	list_init(&events->events);
 }
+
+void events_cleanup(struct events *events)
+{
+	while (!list_empty(&events->events)) {
+		struct event_fd *event;
+
+		event = list_first_entry(&events->events, typeof(*event), list);
+		list_remove(&event->list);
+		free(event);
+	}
+}
diff --git a/events.h b/events.h
index ef8dccc..b0b8fa8 100644
--- a/events.h
+++ b/events.h
@@ -44,5 +44,6 @@ bool events_loop(struct events *events);
 void events_stop(struct events *events);
 
 void events_init(struct events *events);
+void events_cleanup(struct events *events);
 
 #endif