10 开机时产生断言shall not be used in ISR

发布于 2022-03-10 14:43:51 浏览：1959 订阅该版

4 个回答

nongxiaoming 2022-03-10

rt-thread大师兄

Dwyer 2022-03-11

这家伙很懒，什么也没写！

Dwyer 2022-03-11

这家伙很懒，什么也没写！

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追加回复

crystal266 2022-03-10

嵌入式

rt_object_find() 这个函数的注释写的是不能在中断中使用，所以要查一下哪部分的代码在中断中调用了该函数，从而来避免这个问题的出现。至于为什么不能在中断中使用，查看源码，猜想是从链表中查找节点时关闭了中断，可能需要花费的时间比较久，所以系统不建议在中断中使用，不知道对不对。
```
/**
 * @brief This function will find specified name object from object
 *        container.
 *
 * @param name is the specified name of object.
 *
 * @param type is the type of object
 *
 * @return the found object or RT_NULL if there is no this object
 * in object container.
 *
 * @note this function shall not be invoked in interrupt status.
 */
rt_object_t rt_object_find(const char *name, rt_uint8_t type)
{
    struct rt_object *object = RT_NULL;
    struct rt_list_node *node = RT_NULL;
    struct rt_object_information *information = RT_NULL;

information = rt_object_get_information((enum rt_object_class_type)type);

/* parameter check */
    if ((name == RT_NULL) || (information == RT_NULL)) return RT_NULL;

/* which is invoke in interrupt status */
    RT_DEBUG_NOT_IN_INTERRUPT;

/* enter critical */
    rt_enter_critical();

/* try to find object */
    rt_list_for_each(node, &(information->object_list))
    {
        object = rt_list_entry(node, struct rt_object, list);
        if (rt_strncmp(object->name, name, RT_NAME_MAX) == 0)
        {
            /* leave critical */
            rt_exit_critical();

return object;
        }
    }

/* leave critical */
    rt_exit_critical();

return RT_NULL;
}
```