Doubly linked list

#define LOS_DL_LIST_ENTRY ( item, type, member   )     ((type *)((char *)item - LOS_OFF_SET_OF(type, member))) \ Obtain the pointer to a structure that contains a doubly linked list. Description: This API is used to obtain the pointer to a structure that contains a doubly linked list. None. 注意: None. 参数: 参数名称 描述 item  [IN] Current node's pointer to the next node. type  [IN] Structure name. member  [IN] Member name of the doubly linked list in the structure. 返回值: 返回值 描述 Pointer  to the structure that contains the doubly linked list. Dependency: los_list.h: the header file that contains the API declaration. 参见: 自从: Huawei LiteOS V100R001C00 在文件los_list.h第286行定义。