应用模块的rt_module_unload函数的bug

发布于 2015-01-29 10:13:58 浏览：3849 订阅该版

从1431行开始：
```
        list = &module->module_object[RT_Object_Class_Thread].object_list;
        while (list->next != list)
        {
            object = rt_list_entry(list->next, struct rt_object, list);
            if (rt_object_is_systemobject(object) == RT_TRUE)
            {
                /* detach static object */
                rt_thread_detach((rt_thread_t)object);
            }
            else
            {
                /* delete dynamic object */
                rt_thread_delete((rt_thread_t)object);
            }
        }
```

由于list在循环里面从来没有更新过值，如果存在子线程的话，就直接死循环了。可以改为：
```
        list = &module->module_object[RT_Object_Class_Thread].object_list;
        while (list->next != &module->module_object[RT_Object_Class_Thread].object_list)
        {
            object = rt_list_entry(list->next, struct rt_object, list);
            if (rt_object_is_systemobject(object) == RT_TRUE)
            {
                /* detach static object */
                rt_thread_detach((rt_thread_t)object);
            }
            else
            {
                /* delete dynamic object */
                rt_thread_delete((rt_thread_t)object);
            }
			list = list->next;
        }
```

当然，我比较常规的写法倒是：
```
		struct rt_list_node *node;
        list = &module->module_object[RT_Object_Class_Thread].object_list;
		node = list->next;
        while (node != list)
        {
            object = rt_list_entry(node, struct rt_object, list);
            if (rt_object_is_systemobject(object) == RT_TRUE)
            {
                /* detach static object */
                rt_thread_detach((rt_thread_t)object);
            }
            else
            {
                /* delete dynamic object */
                rt_thread_delete((rt_thread_t)object);
            }
			node = node->next;
        }
```