函数逻辑报告

函数名称：racing_map_add_var - Add a field describing a tracing_map var*@map: The tracing_map* Add a var to the map and return the index identifying it in the map* and associated tracing_map_elts

函数原型：int tracing_map_add_var(struct tracing_map *map)

返回类型：int

参数：