From: Jan Vrany <jan.vrany@fit.cvut.cz>
To: Tom Tromey <tom@tromey.com>
Cc: gdb-patches <gdb-patches@sourceware.org>
Subject: Re: [RFC 8/8] mi/python: Allow redefinition of python MI commands
Date: Tue, 07 May 2019 11:26:00 -0000 [thread overview]
Message-ID: <31326cf9e4f843bef7141860306b20ee016b06bf.camel@fit.cvut.cz> (raw)
In-Reply-To: <87woj3mfbs.fsf@tromey.com>
On Mon, 2019-05-06 at 15:40 -0600, Tom Tromey wrote:
> Jan> Does above address your concern?
>
> The issue isn't a leak but rather the possibility of using an object
> after it's been destroyed.
>
> That is, if an MI command can be running when it is replaced, the code
> has to be sure that the command object isn't referenced after the
> replacement -- because the old object will have been destroyed.
>
I see. I just added a test for this case into "almost finished"
v2 of the patch series. There, this problem is kind of avoided by
making sure that in mi_command_py::invoke anything from "this"
mi_command_py object is not accessed AFTER calling the python code.
However I agree that using shared_ptr is more robust solution.
Thanks!
Jan
> Tom
next prev parent reply other threads:[~2019-05-07 11:26 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-18 15:23 [RFC 0/8] Create MI commands using python Jan Vrany
2019-04-18 15:23 ` [RFC 1/8] Use std::map for MI commands in mi-cmds.c Jan Vrany
2019-04-25 19:13 ` Tom Tromey
2019-04-25 19:15 ` Tom Tromey
2019-04-25 19:34 ` Jan Vrany
2019-05-03 22:40 ` Simon Marchi
2019-05-03 22:45 ` Simon Marchi
2019-04-18 15:24 ` [RFC 4/8] mi/python: C++ify python MI command handling code Jan Vrany
2019-04-25 19:43 ` Tom Tromey
2019-04-18 15:24 ` [RFC 3/8] Create MI commands using python Jan Vrany
2019-04-25 19:42 ` Tom Tromey
2019-04-18 15:24 ` [RFC 2/8] Use classes to represent MI Command instead of structures Jan Vrany
2019-04-25 19:25 ` Tom Tromey
2019-05-03 22:49 ` Simon Marchi
2019-05-03 22:57 ` Simon Marchi
2019-04-18 15:24 ` [RFC 6/8] mi/python: Handle python exception when executiong python-defined MI commands Jan Vrany
2019-04-25 19:46 ` Tom Tromey
2019-04-26 10:19 ` Jan Vrany
2019-04-18 15:24 ` [RFC 8/8] mi/python: Allow redefinition of python " Jan Vrany
2019-04-25 19:50 ` Tom Tromey
2019-05-03 15:26 ` Jan Vrany
2019-05-06 21:40 ` Tom Tromey
2019-05-07 11:26 ` Jan Vrany [this message]
2019-05-07 13:09 ` Simon Marchi
2019-05-07 13:19 ` Jan Vrany
2019-05-08 0:10 ` Simon Marchi
2019-05-08 18:00 ` Tom Tromey
2019-04-18 15:24 ` [RFC 7/8] mi/python: Add tests for python-defined " Jan Vrany
2019-04-25 19:48 ` Tom Tromey
2019-04-18 16:03 ` [RFC 0/8] Create MI commands using python Simon Marchi
2019-04-20 7:20 ` Jan Vrany
2019-04-18 16:12 ` [RFC 5/8] mi/python: Polish MI output of python commands Jan Vrany
2019-04-25 19:50 ` Tom Tromey
2019-04-25 18:03 ` [RFC 0/8] Create MI commands using python Tom Tromey
2019-04-25 19:00 ` Simon Marchi
2019-04-25 19:01 ` Simon Marchi
2019-05-14 11:24 ` [PATCH v2 3/5] " Jan Vrany
2019-05-17 4:29 ` Simon Marchi
2019-05-28 20:35 ` Jan Vrany
2019-05-14 11:24 ` [PATCH v2 5/5] mi/python: Add tests for python-defined MI commands Jan Vrany
2019-05-14 11:24 ` [PATCH v2 1/5] Use std::map for MI commands in mi-cmds.c Jan Vrany
2019-05-14 11:24 ` [PATCH v2 0/5] Create MI commands using python Jan Vrany
2019-05-14 11:24 ` [PATCH v2 2/5] Use classes to represent MI Command instead of structures Jan Vrany
2019-05-17 3:12 ` Simon Marchi
2019-05-14 11:57 ` [PATCH v2 4/5] mi/python: Allow redefinition of python MI commands Jan Vrany
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