From: Tom Tromey <tromey@redhat.com>
To: Kevin Pouget <kevin.pouget@gmail.com>
Cc: gdb-patches@sourceware.org
Subject: Re: [RFC] Python Finish Breakpoints
Date: Thu, 20 Oct 2011 20:12:00 -0000 [thread overview]
Message-ID: <m3d3drmo1w.fsf@fleche.redhat.com> (raw)
In-Reply-To: <CAPftXULwB7FcUbXnT2gqDi3c+R+KcrDPNB2jyGEd9CqEGptWqg@mail.gmail.com> (Kevin Pouget's message of "Thu, 13 Oct 2011 16:33:31 +0200")
>>>>> "Kevin" == Kevin Pouget <kevin.pouget@gmail.com> writes:
Kevin> I would like to come back on this patch discussion, I know it has been
Kevin> a while since the last post (May 30th), but I was waiting for my
Kevin> copyright assignment to be ready, and then had to empty the patches
Kevin> already in the pipe.
Thanks for reopening this.
I'd like this functionality, in some form :), to go in.
Kevin> it appeared that the most stormy part was related to the
Kevin> FinishBreakpoint.out_of_scope() callback:
>> @defop Operation {gdb.Breakpoint} out_of_scope (self)
>> In some circonstances (eg, @code{longjmp}, C++ exceptions, @value{GDBN}
>> @code{return} command, ...), a function may not properly terminate, and thus
>> never hit a @{code} FinishBreakpoint. When @value{GDBN} notices such a
>> situation, the @code{out_of_scope} function will be triggered.
Kevin> I'll try a last time to convince you about its necessity, then I'll
Kevin> consider dropping it off !
Kevin> The main rational behind this callback is housekeeping: I'm building
Kevin> new functionalities on top of the Python interface, and I would like
Kevin> it to be invisible to the user (eg, when GDB performs a 'next/finish',
Kevin> you don't want to let the internal breakpoints in the inferior when
Kevin> the commands returns, in any situation.
Kevin> In the case of FinishBreakpoints, I would like to easily know if when
Kevin> the BP became meaningless (that is, the exec ran out of the scope
Kevin> where the FBP can be trigged) and time has come to remove it.
Kevin> Does it make sense?
I think a callback like this does make sense for finish breakpoints.
From looking back at the old thread, the problem I had was that I did
not understand the way that the callback was used, or the purpose of the
"out_of_scope_notif" attribute.
I'll send some notes on the latest version of the patch in a bit.
Tom
next prev parent reply other threads:[~2011-10-20 20:00 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <BANLkTim+YH64zkWvdz2_kVUUj=AJ7v4LKw@mail.gmail.com>
[not found] ` <BANLkTi=gtHzWzXOJzB+a19=jkfk1hGwQBg@mail.gmail.com>
[not found] ` <BANLkTikVdqbMqjguTV8ct0TWiBDhHGYtLg@mail.gmail.com>
2011-05-11 7:44 ` Kevin Pouget
2011-05-11 10:31 ` Phil Muldoon
2011-05-11 11:29 ` Kevin Pouget
2011-05-12 10:38 ` Kevin Pouget
2011-05-12 10:50 ` Phil Muldoon
2011-05-12 11:29 ` Kevin Pouget
[not found] ` <BANLkTi=Eu-5B4YyhP2rGdQXgXbBN-EmLKA@mail.gmail.com>
[not found] ` <BANLkTikt2hEUcXkGVH44NaUcwiF1SGdMaw@mail.gmail.com>
[not found] ` <BANLkTi=UpgogckTD5MZsW+PC5d2F8X-+jA@mail.gmail.com>
[not found] ` <BANLkTi==bj50mZgFKq_qA-+3-2CQA3tBVw@mail.gmail.com>
[not found] ` <BANLkTimmYEmvKT_984jYEVZnA5RGFpEgNw@mail.gmail.com>
2011-05-19 16:21 ` Tom Tromey
2011-05-24 12:51 ` Kevin Pouget
2011-05-27 20:30 ` Tom Tromey
2011-05-30 9:29 ` Kevin Pouget
2011-10-13 14:34 ` Kevin Pouget
2011-10-20 20:12 ` Tom Tromey [this message]
2011-10-20 20:58 ` Tom Tromey
2011-10-21 8:15 ` Kevin Pouget
2011-10-24 11:43 ` Kevin Pouget
2011-10-24 13:20 ` Eli Zaretskii
2011-10-24 14:30 ` Kevin Pouget
2011-10-24 17:14 ` Eli Zaretskii
2011-10-24 15:31 ` Kevin Pouget
2011-10-24 16:27 ` Phil Muldoon
2011-10-25 11:05 ` Kevin Pouget
2011-10-25 11:37 ` Phil Muldoon
2011-10-25 12:22 ` Kevin Pouget
2011-10-28 8:33 ` Kevin Pouget
2011-10-28 20:51 ` Tom Tromey
2011-11-02 14:44 ` Kevin Pouget
2011-11-04 14:25 ` Kevin Pouget
2011-11-04 21:04 ` Tom Tromey
2011-11-09 14:10 ` Kevin Pouget
2011-11-16 10:53 ` Kevin Pouget
2011-11-17 17:49 ` Tom Tromey
2011-11-17 17:48 ` Tom Tromey
[not found] ` <CAPftXUJwtGJhqFyfX6LVK87QH2xeLkvv5kx=yaEnYJMv0YR_rw@mail.gmail.com>
2011-11-24 8:27 ` Kevin Pouget
2011-11-30 16:02 ` Kevin Pouget
2011-12-02 21:49 ` Tom Tromey
2011-12-05 9:29 ` Kevin Pouget
2011-12-06 21:18 ` Tom Tromey
2011-12-07 13:35 ` Kevin Pouget
2011-12-08 15:30 ` Tom Tromey
2011-12-08 16:10 ` Kevin Pouget
2011-12-08 18:08 ` Kevin Pouget
2011-12-09 9:53 ` Kevin Pouget
2011-12-18 19:22 ` Kevin Pouget
2011-12-20 20:55 ` Tom Tromey
2011-12-20 20:58 ` Kevin Pouget
2011-12-21 7:16 ` Joel Brobecker
2011-12-21 17:13 ` Tom Tromey
[not found] ` <CAPftXUKXh9ekZ2kiwQ=5zbrjst+9VH9-eZk8h+Z-9SpQ1WqdLw@mail.gmail.com>
[not found] ` <CAPftXULQFggY3Nz2byC0fMZA1sg4Nymp3hAhe8aSuLNG4cauFg@mail.gmail.com>
[not found] ` <CAPftXUJALHd=-fajVwgowqfCDfXO6JMxSkorWD6CQArsg-PedQ@mail.gmail.com>
[not found] ` <CAPftXULKC8gp3L87+PZEF3dj3crv9bh-uzZpRiYKjqEw_xyptQ@mail.gmail.com>
2011-12-27 4:18 ` Joel Brobecker
2011-12-27 9:40 ` Kevin Pouget
2011-12-27 12:22 ` Joel Brobecker
2011-12-27 9:34 ` Kevin Pouget
2011-12-24 23:56 ` [patch] Fix gdb.python/py-finish-breakpoint.exp new FAIL on x86_64-m32 [Re: [RFC] Python Finish Breakpoints] Jan Kratochvil
2011-12-27 11:13 ` Kevin Pouget
2011-12-27 21:39 ` [commit] " Jan Kratochvil
2012-01-04 17:45 ` Ulrich Weigand
2012-01-04 17:58 ` [commit 7.4] " Jan Kratochvil
2012-01-04 18:10 ` Ulrich Weigand
2011-12-26 11:28 ` [patch] Fix remote.c crash on gdbserver close (+fix py-finish-breakpoint.exp for gdbserver) " Jan Kratochvil
2011-12-27 23:30 ` [patch] Fix remote.c crash on gdbserver close (+fix py-finish-breakpoint.exp for gdbserver) [rediff] Jan Kratochvil
2012-01-02 17:57 ` Tom Tromey
2012-01-02 19:49 ` Pedro Alves
2012-01-19 16:24 ` Call target_close after unpushing, not before (was: Re: [patch] Fix remote.c crash on gdbserver close (+fix py-finish-breakpoint.exp for gdbserver)) Pedro Alves
2012-01-19 16:27 ` Jan Kratochvil
2012-01-19 16:37 ` Call target_close after unpushing, not before Pedro Alves
2012-01-19 16:53 ` [commit] Re: Call target_close after unpushing, not before (was: Re: [patch] Fix remote.c crash on gdbserver close (+fix py-finish-breakpoint.exp for gdbserver)) Jan Kratochvil
2012-01-04 14:49 ` [RFC] Python Finish Breakpoints Ulrich Weigand
2012-01-04 15:24 ` Kevin Pouget
2012-01-04 16:29 ` Ulrich Weigand
2012-01-04 16:42 ` Tom Tromey
2012-01-04 16:40 ` Tom Tromey
2012-01-04 17:13 ` Ulrich Weigand
2012-01-09 9:21 ` Kevin Pouget
2012-01-27 17:01 ` Kevin Pouget
2011-10-28 19:26 ` Tom Tromey
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