c - Decoding data stuctures -

i wondering if there graphical tool decode data structures multiple files? mean is, let have following

typedef struct herstruct;  ... typedef struct mystruct {    void* hisstruct;    herstruct* ptr; }mystruct; 

it have been great if there tool in , pass header files , c files , tool give graphical representation of various structures used. wishful thinking know. going through linux drivers ( custom drivers) , feels convoluted understanding various structures. how 1 understand else's code has many structures , convoluted ( , not many comments!).i tried draw myself, did not go far. thanks

you can try using doxygen/graphviz generate visualizations. take @ this question.