graph display question

[Srinivas Narayan]

Hello,

 

I am trying to use the graph display command to visualize some complex data structures with dependent nodes. I would like to be able to write a script that follows all the pointers I need to and use that whenever I need to dump a specific data structure. However, there does not seem to be any way to get the display number of a node in order to express a dependency on.

Would it be possible to add this facility?

 

e.g if I have the following data structure hierarchy

 

struct x {

   int i;

};

 

struct y {

   struct x *x_ptr;

};

 

struct y *y_ptr;

 

I would like to be able to have a script of the form

 

graph display y_ptr 

..... determine <number>.... corresponding to display of y_ptr

graph display y_ptr->x_ptr dependent on <number> 

and so on ...

where <number> can be determined dynamically or better still assigned by the user.

 

I understand that is currently just a monotonically increasing number. So one way of determining the number may be to keep a global value in my script - but that seems a bit kludgy and doesn't let me maintain a library of scripts that can be invoked easily.

A separate second query - is it possible to customize the shape of the edges generated in the graph to make them neat 'L' shapes in order to generate graphs with minimum overlap?

 

Thanks

Srinivas