esp-idf/components/esp_event/esp_event_private.c

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/*
* SPDX-FileCopyrightText: 2018-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
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#include "esp_event_private.h"
#include "esp_event_internal.h"
#include "esp_log.h"
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)
{
esp_event_loop_instance_t* loop = (esp_event_loop_instance_t*) event_loop;
bool result = false;
esp_event_loop_node_t* loop_node;
esp_event_base_node_t* base_node;
esp_event_id_node_t* id_node;
esp_event_handler_node_t* handler;
SLIST_FOREACH(loop_node, &(loop->loop_nodes), next) {
SLIST_FOREACH(handler, &(loop_node->handlers), next) {
if (event_base == ESP_EVENT_ANY_BASE && event_id == ESP_EVENT_ANY_ID && handler->handler_ctx->handler == event_handler) {
result = true;
goto out;
}
}
SLIST_FOREACH(base_node, &(loop_node->base_nodes), next) {
if (base_node->base == event_base) {
SLIST_FOREACH(handler, &(base_node->handlers), next) {
if (event_id == ESP_EVENT_ANY_ID && handler->handler_ctx->handler == event_handler) {
result = true;
goto out;
}
}
SLIST_FOREACH(id_node, &(base_node->id_nodes), next) {
if (id_node->id == event_id) {
SLIST_FOREACH(handler, &(id_node->handlers), next) {
if (handler->handler_ctx->handler == event_handler) {
result = true;
goto out;
}
}
}
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}
}
}
}
out:
xSemaphoreGive(loop->mutex);
return result;
}