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Re: -var-update @
- From: André Pönitz <apoenitz at trolltech dot com>
- To: gdb-patches at sourceware dot org
- Date: Tue, 1 Apr 2008 15:17:48 +0200
- Subject: Re: -var-update @
- References: <email@example.com> <6D19CA8D71C89C43A057926FE0D4ADAA04290FD3@ecamlmw720.eamcs.ericsson.se> <firstname.lastname@example.org>
On Thursday 27 March 2008 21:58:09 Nick Roberts wrote:
> > DSF only updates varObj that are visible on screen. So currently, it always
> > uses -var-update with a single varObj name (never use *).
> Which must mean that there is a round trip to the target for each variable
> object that needs to be updated.
One usually can issue all commands at once without waiting for the results
to show up first. So depending on circumstances asking $n questions might
take considerably less time than $n "full roundtrips".
Having said that, roundtrip times are indeed reducing the utility of
the current mi interface: One needs simply too much 'real' roundtrips to
get a screenfull of information.
As an example I don't need the 'intermediate level' of public/protected/private
information for C++ objects, since I do not want to display that anyway.
Yet I have to ask for --all-children, wait for the response, parse it, only to
discover that it cointains a, say, private and a public block, and ask again
for the 'real' children now. So that's two full roundtrips for what could be one...