Who uses gdbreplay?

I am interested in knowing if (and how much) 
anybody uses the gdbreplay utility that comes
as a part of gdbserver.

It's an interesting (and elegantly simple) utility, 
but somewhat limited, and I have some ideas for
improving it.  Not much use, though, if nobody
ever uses it!

Thanks,
Michael

Hi,

I've tried to find information in the doc about gdbreplay
without luck.
Really quickly, does gdbreplay, as its name suggest, allow
to record an
re-run an application session?  Does it allow reverse
debugging in some form?
And since this is part of gdbserver, I assume its functions
are for a target system?

This very morning, I was asked if GDB had any kind of
foundation for reverse
debugging on a target.  Is gdbreplay what I am looking for?

Thanks

Marc

> -----Original Message-----
> From: gdb-ownersourceware.org [mailto:gdb-ownersourceware.org]On
> Behalf Of Michael Snyder
> Sent: Thursday, June 12, 2008 2:36 PM
> To: gdbsourceware.org
> Subject: Who uses gdbreplay?
> 
> 
> I am interested in knowing if (and how much) 
> anybody uses the gdbreplay utility that comes
> as a part of gdbserver.
> 
> It's an interesting (and elegantly simple) utility, 
> but somewhat limited, and I have some ideas for
> improving it.  Not much use, though, if nobody
> ever uses it!
> 
> Thanks,
> Michael
> 
> 
> 
> 

On Thu, Jun 12, 2008 at 02:54:58PM -0400, Marc Khouzam
wrote:
> Hi,
> 
> I've tried to find information in the doc about
gdbreplay without luck.
> Really quickly, does gdbreplay, as its name suggest,
allow to record an
> re-run an application session?  Does it allow reverse
debugging in some form?
> And since this is part of gdbserver, I assume its
functions are for a target system?
> 
> This very morning, I was asked if GDB had any kind of
foundation for reverse
> debugging on a target.  Is gdbreplay what I am looking
for?

No.  gdbreplay allows you to rerun a remote protocol
conversation from
a log.  This only works if you issue exactly the same
commands to GDB;
it is a very simple program, and only knows "what
packet do I expect
next" and "what reply should I send to the
expected packet".  It's
basically a debugging aid for the remote protocol.

-- 
Daniel Jacobowitz
CodeSourcery