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Re: Understanding GDB frames

From: Jim Ingham <jingham at apple dot com>
To: Daniel Jacobowitz <drow at false dot org>
Cc: Marc Gauthier <marc at tensilica dot com>, Ross Morley <ross at tensilica dot com>, Nick Roberts <nickrob at snap dot net dot nz>, Maxim Grigoriev <maxim at tensilica dot com>, gdb at sourceware dot org, Pete MacLiesh <pmac at tensilica dot com>
Date: Tue, 22 May 2007 11:32:41 -0700
Subject: Re: Understanding GDB frames
References: <4652AC74.9050100@tensilica.com> <KAEOLFIOAJBBAFKHIDEAMENFEEAA.marc@tensilica.com> <20070522163616.GB25392@caradoc.them.org>

I don't see what the bad effect of not destroying the varobj if the frame id is identical is. You might get an errant "value changed" notification. Other than that, I can't see what you would be gaining.

If we're going to do some extra work to make sure we mark variables out of scope when their frames are exited, we should get something real out of it. So far it seems the benefit is only theoretical.

Jim

On May 22, 2007, at 9:36 AM, Daniel Jacobowitz wrote:

On Tue, May 22, 2007 at 09:10:29AM -0700, Marc Gauthier wrote:

As we discussed offline yesterday, this has performance implications
on the GUI, which would have to recreate the varobjs every time which
is time consuming.


Is the performance implication the main reason?  If so, I'd rather we
fix that instead.  I know Nick and/or Vladimir suggested "-var-list
--locals" at one point in an earlier discussion of a related problem.
That's probably quite a lot faster, especially if we can notify the
front end when it enters a new frame.

--
Daniel Jacobowitz
CodeSourcery

Follow-Ups:
- Re: Understanding GDB frames
  - From: Daniel Jacobowitz

References:
- Re: Understanding GDB frames
  - From: Ross Morley
- RE: Understanding GDB frames
  - From: Marc Gauthier
- Re: Understanding GDB frames
  - From: Daniel Jacobowitz

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