Make afb_event_drop obsolete

The function is now replaced by the function afb_event_unref.
In the same time, the function afb_event_addref is made available.

Change-Id: I9aa30e80e64e82f3b16ab359982337771b287185
Signed-off-by: José Bollo <jose.bollo@iot.bzh>

2 files changed, 26 insertions, 11 deletions

diff --git a/include/afb/afb-binding.hpp b/include/afb/afb-binding.hpp
index 1fc8b497..6e062b2e 100644
--- a/include/afb/afb-binding.hpp
+++ b/include/afb/afb-binding.hpp
@@ -110,7 +110,8 @@ public:
 	int broadcast(json_object *object) const;
 	int push(json_object *object) const;
 
-	void drop();
+	void unref();
+	void addref();
 	const char *name() const;
 };
 
@@ -261,7 +262,8 @@ inline void event::invalidate() { event_.itf = NULL; event_.closure = NULL; }
 inline int event::broadcast(json_object *object) const { return afb_event_broadcast(event_, object); } 
 inline int event::push(json_object *object) const { return afb_event_push(event_, object); }
 
-inline void event::drop() { afb_event_drop(event_); invalidate(); }
+inline void event::unref() { afb_event_unref(event_); invalidate(); }
+inline void event::addref() { afb_event_addref(event_); }
 inline const char *event::name() const { return afb_event_name(event_); }
 
 /* args */
diff --git a/include/afb/afb-event-itf.h b/include/afb/afb-event-itf.h
index b1776ea0..6827d86a 100644
--- a/include/afb/afb-event-itf.h
+++ b/include/afb/afb-event-itf.h
@@ -32,8 +32,9 @@ struct afb_event_itf
 
 	int (*broadcast)(void *closure, struct json_object *obj);
 	int (*push)(void *closure, struct json_object *obj);
-	void (*drop)(void *closure);
+	void (*unref)(void *closure);
 	const char *(*name)(void *closure);
+	void (*addref)(void *closure);
 };
 
 /*
@@ -85,21 +86,33 @@ static inline int afb_event_push(struct afb_event event, struct json_object *obj
 	return event.itf->push(event.closure, object);
 }
 
+/* OBSOLETE */
+#define afb_event_drop afb_event_unref
+
 /*
- * Drops the data associated to the 'event'
- * After calling this function, the event
- * MUST NOT BE USED ANYMORE.
+ * Gets the name associated to the 'event'.
  */
-static inline void afb_event_drop(struct afb_event event)
+static inline const char *afb_event_name(struct afb_event event)
 {
-	event.itf->drop(event.closure);
+	return event.itf->name(event.closure);
 }
 
 /*
- * Gets the name associated to the 'event'.
+ * Decrease the count of reference to 'event' and
+ * destroys the event when the reference count falls to zero.
  */
-static inline const char *afb_event_name(struct afb_event event)
+static inline void afb_event_unref(struct afb_event event)
 {
-	return event.itf->name(event.closure);
+	event.itf->unref(event.closure);
+}
+
+/*
+ * remove one reference to the data associated to the 'event'
+ * After calling this function, the event
+ * MUST NOT BE USED ANYMORE.
+ */
+static inline void afb_event_addref(struct afb_event event)
+{
+	event.itf->addref(event.closure);
 }