1 // Copyright 2018 Espressif Systems (Shanghai) PTE LTD
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include "esp_event_private.h"
16 #include "esp_event_internal.h"
17
18 #include "esp_log.h"
19
esp_event_is_handler_registered(esp_event_loop_handle_t event_loop,esp_event_base_t event_base,int32_t event_id,esp_event_handler_t event_handler)20 bool esp_event_is_handler_registered(esp_event_loop_handle_t event_loop, esp_event_base_t event_base, int32_t event_id, esp_event_handler_t event_handler)
21 {
22 esp_event_loop_instance_t* loop = (esp_event_loop_instance_t*) event_loop;
23
24 bool result = false;
25
26 esp_event_loop_node_t* loop_node;
27 esp_event_base_node_t* base_node;
28 esp_event_id_node_t* id_node;
29 esp_event_handler_node_t* handler;
30
31 SLIST_FOREACH(loop_node, &(loop->loop_nodes), next) {
32 SLIST_FOREACH(handler, &(loop_node->handlers), next) {
33 if(event_base == ESP_EVENT_ANY_BASE && event_id == ESP_EVENT_ANY_ID && handler->handler_ctx->handler == event_handler)
34 {
35 result = true;
36 goto out;
37 }
38 }
39
40 SLIST_FOREACH(base_node, &(loop_node->base_nodes), next) {
41 if (base_node->base == event_base) {
42 SLIST_FOREACH(handler, &(base_node->handlers), next) {
43 if(event_id == ESP_EVENT_ANY_ID && handler->handler_ctx->handler == event_handler)
44 {
45 result = true;
46 goto out;
47 }
48 }
49
50 SLIST_FOREACH(id_node, &(base_node->id_nodes), next) {
51 if(id_node->id == event_id) {
52 SLIST_FOREACH(handler, &(id_node->handlers), next) {
53 if(handler->handler_ctx->handler == event_handler)
54 {
55 result = true;
56 goto out;
57 }
58 }
59 }
60 }
61 }
62 }
63 }
64
65 out:
66 xSemaphoreGive(loop->mutex);
67 return result;
68 }
69
