增加事件驱动和业务回滚处理方式

app/event_queue.c

@@ -0,0 +1,203 @@
+/*
+ * event_queue.c
+ *
+ *  Created on: 2026-03-04
+ *      Author: RT-Thread
+ *
+ *  功能: 事件队列模块实现
+ *  依赖: RT-Thread Nano, osal
+ *  跨平台适配: 基于RT-Thread Nano，使用标准API
+ */
+
+#include <rtthread.h>
+#include "osal.h"
+#include "event_queue.h"
+
+/* 事件队列结构 */
+static event_queue_t g_event_queue;
+
+/**
+ * @brief 初始化事件队列
+ * @return 0 成功，非0 失败
+ */
+int event_queue_init(void)
+{
+    /* 初始化事件队列 */
+    g_event_queue.head = 0;
+    g_event_queue.tail = 0;
+    g_event_queue.count = 0;
+    
+    /* 初始化互斥锁 */
+    g_event_queue.mutex = osal_mutex_create("event_mutex");
+    if (g_event_queue.mutex == NULL)
+    {
+        osal_log_e("Failed to create event queue mutex");
+        return -1;
+    }
+    
+    /* 初始化信号量 */
+    g_event_queue.sem = osal_sem_create("event_sem", 0);
+    if (g_event_queue.sem == NULL)
+    {
+        osal_log_e("Failed to create event queue semaphore");
+        osal_mutex_delete(g_event_queue.mutex);
+        return -1;
+    }
+    
+    osal_log_i("Event queue initialized");
+    return 0;
+}
+
+/**
+ * @brief 销毁事件队列
+ * @return 0 成功，非0 失败
+ */
+int event_queue_deinit(void)
+{
+    if (g_event_queue.mutex != NULL)
+    {
+        osal_mutex_delete(g_event_queue.mutex);
+        g_event_queue.mutex = NULL;
+    }
+    
+    if (g_event_queue.sem != NULL)
+    {
+        osal_sem_delete(g_event_queue.sem);
+        g_event_queue.sem = NULL;
+    }
+    
+    osal_log_i("Event queue deinitialized");
+    return 0;
+}
+
+/**
+ * @brief 向事件队列中添加事件
+ * @param event 事件指针
+ * @return 0 成功，非0 失败
+ */
+int event_queue_push(event_t *event)
+{
+    if (event == NULL)
+    {
+        return -1;
+    }
+    
+    /* 加锁 */
+    if (osal_mutex_take(g_event_queue.mutex, OSAL_WAIT_FOREVER) != OSAL_OK)
+    {
+        osal_log_e("Failed to take event queue mutex");
+        return -1;
+    }
+    
+    /* 检查队列是否已满 */
+    if (g_event_queue.count >= EVENT_QUEUE_SIZE)
+    {
+        osal_log_w("Event queue is full, dropping event");
+        osal_mutex_release(g_event_queue.mutex);
+        return -1;
+    }
+    
+    /* 添加事件到队列 */
+    g_event_queue.events[g_event_queue.tail] = *event;
+    g_event_queue.tail = (g_event_queue.tail + 1) % EVENT_QUEUE_SIZE;
+    g_event_queue.count++;
+    
+    /* 解锁 */
+    osal_mutex_release(g_event_queue.mutex);
+    
+    /* 释放信号量 */
+    osal_sem_release(g_event_queue.sem);
+    
+    return 0;
+}
+
+/**
+ * @brief 从事件队列中获取事件
+ * @param event 事件指针，用于存储获取的事件
+ * @param timeout 超时时间，单位ms
+ * @return 0 成功，非0 失败
+ */
+int event_queue_pop(event_t *event, int timeout)
+{
+    if (event == NULL)
+    {
+        return -1;
+    }
+    
+    /* 等待信号量 */
+    if (osal_sem_take(g_event_queue.sem, timeout) != OSAL_OK)
+    {
+        return -1;
+    }
+    
+    /* 加锁 */
+    if (osal_mutex_take(g_event_queue.mutex, OSAL_WAIT_FOREVER) != OSAL_OK)
+    {
+        osal_log_e("Failed to take event queue mutex");
+        return -1;
+    }
+    
+    /* 检查队列是否为空 */
+    if (g_event_queue.count == 0)
+    {
+        osal_mutex_release(g_event_queue.mutex);
+        return -1;
+    }
+    
+    /* 从队列中获取事件 */
+    *event = g_event_queue.events[g_event_queue.head];
+    g_event_queue.head = (g_event_queue.head + 1) % EVENT_QUEUE_SIZE;
+    g_event_queue.count--;
+    
+    /* 解锁 */
+    osal_mutex_release(g_event_queue.mutex);
+    
+    return 0;
+}
+
+/**
+ * @brief 获取事件队列中的事件数量
+ * @return 事件数量
+ */
+int event_queue_get_count(void)
+{
+    int count;
+    
+    /* 加锁 */
+    if (osal_mutex_take(g_event_queue.mutex, OSAL_WAIT_FOREVER) != OSAL_OK)
+    {
+        osal_log_e("Failed to take event queue mutex");
+        return -1;
+    }
+    
+    count = g_event_queue.count;
+    
+    /* 解锁 */
+    osal_mutex_release(g_event_queue.mutex);
+    
+    return count;
+}
+
+/**
+ * @brief 清空事件队列
+ * @return 0 成功，非0 失败
+ */
+int event_queue_clear(void)
+{
+    /* 加锁 */
+    if (osal_mutex_take(g_event_queue.mutex, OSAL_WAIT_FOREVER) != OSAL_OK)
+    {
+        osal_log_e("Failed to take event queue mutex");
+        return -1;
+    }
+    
+    /* 清空队列 */
+    g_event_queue.head = 0;
+    g_event_queue.tail = 0;
+    g_event_queue.count = 0;
+    
+    /* 解锁 */
+    osal_mutex_release(g_event_queue.mutex);
+    
+    return 0;
+}