From: mobi phil <mobi@mobiphil.com>
To: gdb@sourceware.org
Subject: readline in gdb (python)
Date: Mon, 23 Feb 2015 17:30:00 -0000 [thread overview]
Message-ID: <CAGMoNKvqC7_r=CHcz8ONjLf7ptRC0tWnjZ9ZAmL9iiOxZdbvTQ@mail.gmail.com> (raw)
Hi,
started to implement a gdb wrapper with some python. Among others I
wanted to add some features that would need readline for completion. I
am aware about the gdb completion system, but that is not
satisfactory. Among others I need my own io/select loop. This is not
available in python readline either, but there is a little hack with
ctypes which makes it working.
Unfortunately it is impossible to import readline. The reason I found
is that readline is not reentrant. Not exactly clear what that means
in this situation and what would be the use-case that would be
dangerous if "import readline" would be enabled.
Probably it would be a problem if readline would be called on a python
callback that is already result of a readline completion. In my case
that would not happen, so do not see any problem.
I also tried to import readline with ctypes, but ctypes does not seem
to callbacks that have result non-trivial types like pointer to
c_char_p.
So I would like to challenge this decision to forbid "import readline"
and to allow it in future
rgrds,
mobi phil
--
rgrds,
mobi phil
being mobile, but including technology
http://mobiphil.com
reply other threads:[~2015-02-23 17:30 UTC|newest]
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