2 * Copyright (C) 2016, 2017 "IoT.bzh"
3 * Author: José Bollo <jose.bollo@iot.bzh>
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
20 #include "afb-eventid-itf.h"
23 * Describes the request of afb-daemon for bindings
27 const struct afb_eventid_itf *itf; /* the interface to use */
28 struct afb_eventid *closure; /* the closure argument for functions of 'itf' */
32 * Converts the 'event' to an afb_eventid.
34 static inline struct afb_eventid *afb_event_to_eventid(struct afb_event event)
40 * Checks wether the 'event' is valid or not.
42 * Returns 0 if not valid or 1 if valid.
44 static inline int afb_event_is_valid(struct afb_event event)
50 * Broadcasts widely the 'event' with the data 'object'.
51 * 'object' can be NULL.
53 * For convenience, the function calls 'json_object_put' for 'object'.
54 * Thus, in the case where 'object' should remain available after
55 * the function returns, the function 'json_object_get' shall be used.
57 * Returns the count of clients that received the event.
59 static inline int afb_event_broadcast(struct afb_event event, struct json_object *object)
61 return event.itf->broadcast(event.closure, object);
65 * Pushes the 'event' with the data 'object' to its observers.
66 * 'object' can be NULL.
68 * For convenience, the function calls 'json_object_put' for 'object'.
69 * Thus, in the case where 'object' should remain available after
70 * the function returns, the function 'json_object_get' shall be used.
72 * Returns the count of clients that received the event.
74 static inline int afb_event_push(struct afb_event event, struct json_object *object)
76 return event.itf->push(event.closure, object);
80 #define afb_event_drop afb_event_unref
83 * Gets the name associated to the 'event'.
85 static inline const char *afb_event_name(struct afb_event event)
87 return event.itf->name(event.closure);
91 * Decreases the count of reference to 'event' and
92 * destroys the event when the reference count falls to zero.
94 static inline void afb_event_unref(struct afb_event event)
96 event.itf->unref(event.closure);
100 * Increases the count of reference to 'event'
102 static inline void afb_event_addref(struct afb_event event)
104 event.itf->addref(event.closure);