From: Daniel Jacobowitz <drow@false.org>
To: Jean-Marc Saffroy <saffroy@gmail.com>
Cc: gdb-patches@sources.redhat.com
Subject: Re: [PATCH] gdb script performance
Date: Tue, 05 Dec 2006 21:02:00 -0000 [thread overview]
Message-ID: <20061205210231.GA27719@nevyn.them.org> (raw)
In-Reply-To: <Pine.LNX.4.64.0611301419070.9872@erda.mds>
On Thu, Nov 30, 2006 at 02:56:54PM +0100, Jean-Marc Saffroy wrote:
> For the PC cache, I guess that just about any address can be passed, so I
> doubt there is much room for improvement (except maybe a cache with more
> than one entry, should it be useful in some cases, but now it's probably
> unneeded).
We shouldn't need to cache at all. I think the right representation
would allow us to look up a single PC and find the best psymtab based
on that PC without having to loop over psymtabs; this requires a pretty
big change to the way we store things, since unfortunately I don't
think we can assume the address ranges of psymtabs are even remotely
sane (multiple psymtabs may overlap, for instance, and it's past time
we started recording DW_AT_ranges discontiguous range information).
Not sure what a good data structure for that would look like.
--
Daniel Jacobowitz
CodeSourcery
prev parent reply other threads:[~2006-12-05 21:02 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-30 0:33 Jean-Marc Saffroy
2006-11-30 1:04 ` Jim Blandy
2006-11-30 13:19 ` Jean-Marc Saffroy
2006-11-30 21:54 ` Michael Snyder
2006-11-30 3:13 ` Daniel Jacobowitz
2006-11-30 13:57 ` Jean-Marc Saffroy
2006-12-05 21:02 ` Daniel Jacobowitz [this message]
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