From: Vladimir Prus <vladimir@codesourcery.com>
To: gdb@sources.redhat.com
Subject: Re: Obtaining number of children of a dynamic varobj
Date: Thu, 11 Feb 2010 17:23:00 -0000 [thread overview]
Message-ID: <hl1ed4$8fd$1@ger.gmane.org> (raw)
In-Reply-To: <58596C4646708B4BB990C4483997333001B639E9@usplmvpbe001.ent.rt.verigy.net>
Elmenthaler, Jens wrote:
> Hi,
>
> Trying to enable the python pretty printers in the Eclipse CDT, a question about the MI API for
> varobjs arose.
>
> If I read the documentation correctly, I should not call -var-list-children without the range of
> children, because in general I should assume that the varobj has a huge number of children and
> fetching them all is potential too expensive.
>
> Quite reasonable sofar. Nevertheless, I have the problem that I have to know the number of
> children a dynamic varobj has.
>
> The only way I see to obtain the number of children, however, is to call -var-list-children
> without a range specification. I can omit the values to be transferred. Does that have the same
> scalability issues, after all it still creates a varobj for each child?
[Please do not ask new questions by replying to an unrelated email]
Yes, it has the same issues. If you ask GDB about the number of children of a variable, and the
variable is uninitialized, GDB might not ever return.
- Volodya
next prev parent reply other threads:[~2010-02-11 17:23 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-10 17:38 GDB steping into STL Headers mweglicki8208
2010-02-11 2:26 ` Hui Zhu
2010-02-11 6:22 ` mweglicki8208
2010-02-11 9:28 ` Obtaining number of children of a dynamic varobj Elmenthaler, Jens
2010-02-11 17:23 ` Vladimir Prus [this message]
2010-02-11 17:56 ` GDB steping into STL Headers Tom Tromey
2010-02-11 19:03 ` Jim Ingham
2010-02-11 19:09 ` Daniel Jacobowitz
2010-02-11 19:12 ` Jim Ingham
2010-02-12 9:32 ` mweglicki8208
2010-02-12 10:43 ` Christophe-Marie Duquesne
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