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From: "Ömer Sinan Ağacan" <omeragacan@gmail.com>
To: Phil Muldoon <pmuldoon@redhat.com>
Cc: paul_koning <Paul_Koning@dell.com>, gdb <gdb@sourceware.org>
Subject: Re: recursion limit exceeded in Python API, but there's only one function in traceback
Date: Fri, 17 Oct 2014 10:53:00 -0000	[thread overview]
Message-ID: <CAMQQO3mVQX8S7_juz2XgNQEjJWnYMWyAXMYVS93Kr2epo8a6Gw@mail.gmail.com> (raw)
In-Reply-To: <5440EB39.2060305@redhat.com>

> Right.  gdb.execute won't return until the command has completed.  Also the
> Python GIL has been acquired (as this is coming from the Python interpreter)
> and so now Python is also blocked too.  So in effect the only thing running
> at this point is the gdb.execute command that was invoked (in your case, the
> continue command). That will return, and then the Python GIL will be released
> and the rest of the script will continue.
>
> I have a patch I need to upstream that adds a release_gil keyword to
> gdb.execute.  This optionally releases the GIL before executing the command.
> But I have not got around to that yet.

IMO, something like dont_block would be more useful for me. What I would expect
from that argument is that when it's True then `gdb.execute` would return
immediately after GDB starts running the command.

> A workaround would be to post any gdb.execute statements into the GDB event
> loop.  See gdb.post_event.  That will return immediately and the gdb.execute
> function will be scheduled to be called in the event loop.  Note there is no
> guarantee when this is.  But as long as GDB is not busy processing other
> events it usually means right away.

Thanks for the tip. I'll try that.


Do you think adding something like `dont_block` would be hard? Maybe I can hack
on that this weekend.


  reply	other threads:[~2014-10-17 10:53 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-10-16 10:46 Ömer Sinan Ağacan
2014-10-16 12:45 ` Phil Muldoon
2014-10-16 14:28   ` Paul_Koning
     [not found]     ` <CAMQQO3=GxjGzF-9RXQsJ_9=Du3rS-UoYFA_0-friPp1nMa8yAA@mail.gmail.com>
2014-10-16 15:04       ` Paul_Koning
2014-10-16 15:15         ` Ömer Sinan Ağacan
2014-10-16 15:18         ` Ömer Sinan Ağacan
2014-10-17  9:31           ` Ömer Sinan Ağacan
2014-10-17 10:11             ` Phil Muldoon
2014-10-17 10:53               ` Ömer Sinan Ağacan [this message]
2014-10-17 14:20                 ` Phil Muldoon
2014-10-17 14:27                   ` Ömer Sinan Ağacan
2014-10-17 15:02                     ` Phil Muldoon
2014-10-17 15:04               ` Paul_Koning
2014-10-17 17:31                 ` Phil Muldoon
2014-10-17 16:41             ` Doug Evans
2014-10-17 17:35               ` Phil Muldoon
2014-10-17 16:45           ` Doug Evans
     [not found]     ` <543FE072.6040507@redhat.com>
2014-10-16 15:16       ` Ömer Sinan Ağacan

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