[Qt-creator] debugging VS steps: 30 seconds

[Friedemann Kleint]

Hi,

> I said before that I had problems with seeing Qt types values, that seems
> to be solved now. But I still have the problem that every step (or when I
> hit a breakpoint) the whole program hangs for about 30 seconds.
>
> It worked faster before. I’m not sure if it is just me (and I need to
> reinstall my system or something :s ) or that this is normal for now and
> work-in-progress. Do other people have this issue?

No, the system is not (necessarily) to blame here....technically, this 
phenomenon is caused by the debugger helpers hitting on an uninitialized 
variable. For example:

QString s1 = "foo";
<breakpoint> fiddle(s1);
QString s2 = "bar";

At the breakpoint, the debugger already sees s2 in the stack frame and tries 
to display it using the Debugger helpers. As it is not yet initialized, the 
helper can cause memory access violations, which make it slow (particularly 
with CDB).

We are working on the issue, but have not really found a good solution yet.
Turning the debugger helpers will always make it faster.

Regards.
Friedemann
-- 
Friedemann Kleint
Nokia, Qt Software

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.qt-project.org/pipermail/qt-creator-old/attachments/20090709/57228181/attachment.html