Re: [RFC] Add new command to spit out the linetable for a given file

[Daniel Jacobowitz <drow at mvista dot com>]

On Fri, Feb 28, 2003 at 04:33:58PM -0800, Joel Brobecker wrote:
> The GVD developpers have brought to my attention an issue regarding
> mostly performance: GVD has a feature were it is capable of telling
> whether a given line of a source file contains any code. In order to
> do this, they use the "info line" command on every single line of the
> file.
> 
> Obviously, this causes a lot of communication between GDB and GVD, so
> they managed to improve a bit the performance by doing this operation as
> a background task for the lines that are not currently displayed in the
> editor (that is, without blocking the user from doing anything else).
> 
> In an effort to continue improving the performance even more, they asked
> me if it was possible to add a new command that would print all in one
> go the list of lines containing some code. 
> 
> In parallel, I know that GVD also provides an assembly view of the
> current line of code. In order to get the addresses of the instructions
> corresponding to the current line of code, the also use "info line".
> 
> So the idea that I came up with was to add a new function that would
> essentially dump the linetable for the symtab of the file in question.
> Roughly, from the user's perspective, it would be a new info command
> (names can be improved):

I believe that this command has been proposed before - I vaguely
remember it even being implemented but I don't know what happened to
the patch.  It was "maint info lines" or something similar...

Would be within the past year in the list archives somewhere but I
can't find it.

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer