From: Pedro Alves <pedro@codesourcery.com>
To: gdb-patches@sourceware.org
Cc: Jan Kratochvil <jan.kratochvil@redhat.com>,
Daniel Jacobowitz <drow@false.org>
Subject: Re: [RFA] Improve performance with lots of shared libraries
Date: Fri, 09 Sep 2011 15:11:00 -0000 [thread overview]
Message-ID: <201109091609.31737.pedro@codesourcery.com> (raw)
In-Reply-To: <20110909143521.GA12299@host1.jankratochvil.net>
On Friday 09 September 2011 15:35:21, Jan Kratochvil wrote:
> On Fri, 09 Sep 2011 16:25:30 +0200, Daniel Jacobowitz wrote:
> > On Fri, Sep 9, 2011 at 8:31 AM, Gary Benson <gbenson@redhat.com> wrote:
> > > * when there are no pending breakpoints,
> >
> > If you "break foo", it might put that breakpoint in more than one
> > shared library. If you load a new library with an implementation of
> > foo, we should stop on that one too. How can we make that work
> > without processing the library events?
>
> This feature was planned being aware of this problem.
>
> It does not work currently, GDB just puts the breakpoint on a random first
> place found.
... and I don't think that's entirely true. Yes, GDB will stop
trying to resolve the spec to a symbol, but at every event gdb will
still re-set the breakpoint locations. If the new library has
the _same_ file:lineno compiled in (e.g., we put a breakpoint
on a c++ template in a header, or an inline function that is
also used by new library), then we should be getting new locations in
the new shared library, today.
--
Pedro Alves
next prev parent reply other threads:[~2011-09-09 15:09 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-09 14:25 Gary Benson
2011-09-09 14:35 ` Daniel Jacobowitz
2011-09-09 14:51 ` Jan Kratochvil
2011-09-09 15:04 ` Pedro Alves
2011-09-09 19:41 ` Jan Kratochvil
2011-09-12 12:44 ` Pedro Alves
2011-09-12 16:44 ` Jan Kratochvil
2011-09-14 9:28 ` Gary Benson
2011-10-04 19:46 ` Tom Tromey
2011-09-09 15:11 ` Pedro Alves [this message]
2011-09-09 14:53 ` Jan Kratochvil
2011-10-04 20:03 ` Tom Tromey
-- strict thread matches above, loose matches on Subject: below --
2011-09-22 17:35 Gary Benson
2011-07-01 16:51 Gary Benson
2011-07-01 17:19 ` Tom Tromey
2011-07-04 14:10 ` Gary Benson
2011-07-01 17:32 ` Joel Brobecker
2011-07-04 14:21 ` Gary Benson
2011-07-01 17:45 ` Pedro Alves
2011-07-01 17:57 ` Pedro Alves
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