Thanks Jacob,
I'll see if I can figure out why interrupt handling isn't working
properly. I'm guessing that something is awry in restoring Python's
interrupt handler code after returning from R's evaluator.
-G
On Mar 27, 2007, at 1:39PM , Jacob Joseph wrote:
> Pressing ctrl-c while r is processing always works properly. Pressing
> ctrl-c after "from rpy import *" does not guarantee a segfault
> immediately, but a crash is virtually certain within 2-10
> repetitions of
> ctrl-c.
>
> For clarity, once R displays the "possible actions", keyboard input
> goes
> to python or nowhere, but never the menu itself.
>
> Thanks again.
> -Jacob
>
> On 03/26/2007 04:14 PM, Gregory Warnes wrote:
>> Hmm. Try this code instead, maybe it'll be slow enough to ensure you
>> can get it while still inside of call():
>>
>>>> from rpy import r
>>>> r("for(i in 1:1e6) rnorm(1e6)")
>>
>>
>> On Mar 26, 2007, at 3:46PM , Jacob Joseph wrote:
>>
>>> Gregory, thanks for the quick assistance.
>>>
>>> If I manage to press ctrl-c while still in rpy.py:__call__(), I can
>>> get
>>> back to the python shell, and get a segfault at exit from this
>>> shell.
>>> At other times, it will segfault immediately. Pressing ctrl-c a
>>> second
>>> time in rapid succession seems with my small samples to produce the
>>> issue more frequently.
>>>
>>> I realize this doesn't resolve your question with more than a
>>> "sometimes". Is there a case that might test this more
>>> definitively?
>>>
>>> -Jacob
>>>
>>> On 03/26/2007 03:21 PM, Gregory Warnes wrote:
>>>> Hi Jacob,
>>>>
>>>> It looks like the event handler code isn't properly setting or
>>>> resetting the control-c handler. Can you try seeing whether
>>>> Control
>>>> C is handled correctly while R itself is processing. IE, exectute:
>>>>
>>>> from rpy import r
>>>> r("for(i in 1:1e6) 1+1")
>>>>
>>>> then press Control-C.
>>>>
>>>> -G
>>>>
>>>> On Mar 26, 2007, at 2:48PM , Jacob Joseph wrote:
>>>>
>>>>> Linux.
>>>>>
>>>>> Sorry, I didn't even think to include it.
>>>>>
>>>>> -Jacob
>>>>>
>>>>> On 03/26/2007 02:47 PM, Gregory. R. Warnes wrote:
>>>>>> What O/S?
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Mar 26, 2007, at 11:36AM , Jacob Joseph wrote:
>>>>>>
>>>>>>> Hi folks,
>>>>>>> I'm looking for suggestions to correct a crash caused by R.
>>>>>>> Often,
>>>>>>> upon
>>>>>>> pressing ctrl-C after importing rpy, R segfaults. I need not
>>>>>>> have yet
>>>>>>> accessed rpy for this to occur. Here's a sample:
>>>>>>>
>>>>>>> *** caught segfault ***
>>>>>>> address (nil), cause 'unknown'
>>>>>>>
>>>>>>> Possible actions:
>>>>>>> 1: abort (with core dump)
>>>>>>> 2: normal R exit
>>>>>>> 3: exit R without saving workspace
>>>>>>> 4: exit R saving workspace
>>>>>>> Selection:
>>>>>>> *** caught segfault ***
>>>>>>> address 0x48, cause 'memory not mapped'
>>>>>>>
>>>>>>> Possible actions:
>>>>>>> 1: abort (with core dump)
>>>>>>> 2: normal R exit
>>>>>>> 3: exit R without saving workspace
>>>>>>> 4: exit R saving workspace
>>>>>>> Selection:
>>>>>>>
>>>>>>> I'm running:
>>>>>>> *rpy-1.0-RC2 patched with
>>>>>>> https://sourceforge.net/tracker/?
>>>>>>> func=detail&atid=453021&aid=1665794&group_id=48422
>>>>>>>
>>>>>>> *python 2.5
>>>>>>> *ipython
>>>>>>> *R 2.4.1
>>>>>>> (all on x86_64)
>>>>>>>
>>>>>>> Thanks.
>>>>>>> -Jacob
>
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