Bug hunting

Dimitri Stolnikov horiz0n at gmx.net
Tue Aug 7 23:23:54 UTC 2012


Hi Christian,

could you please try the attached patch together with Peter's join patch?  
It handles async cancellation in a more graceful way.

The other problem (segfault on trow in ctor) still has to be addressed.


Best regards,
Dimitri

On Tue, 07 Aug 2012 20:53:25 +0200, Christian Gagneraud  
<chris at techworks.ie> wrote:

> On 07/08/12 15:49, Peter Stuge wrote:
>> Christian Gagneraud wrote:
>>> Please find attached the full log.
>>
>> Thanks!
>>
>>
>>> I can provide u with a simple python program, but it will depends
>>> on gnuradio, gr-osmosdr and you will need a compatible device
>>> plugged in as well.
>>
>> No problem, but I think I find the problem.
>>
>>
>>> libusb: 0.783771 debug [libusb_handle_events_timeout_completed] doing  
>>> our own event handling
>>> libusb: 0.783793 debug [handle_events] poll() 3 fds with timeout in  
>>> 1000ms
>>> libusb: 0.783811 debug [libusb_release_interface] interface 0
>>> libusb: 0.785853 debug [handle_events] poll() returned 1
>>
>> The above lines show that the interface is released while event
>> handling is still running. The destructor was called while the IO
>> thread is running, and the destructor does cancel all IO, but it only
>> waited 200 ms for the IO to complete, before it went on to close
>> everything. Please try the attached patch for gr-osmosdr.
>>
>> This may or may not be the appropriate fix. This should perhaps be
>> fixed inside rtl-sdr, or even libusb (we're already considering it)
>> instead.
>
> It doesn't fix the problem alone. The script simply never exits.
> I've just sent a patch for rtl-sdr that fix the issue.
> I think it's still possible that a call to join() could block the app  
> forever, so maybe a longer timeout would be safer here. As well the same  
> apply for the osmosdr wrapper code.
>
> Chris
>
>>
>>
>> //Peter
>>
>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: cleanclose.patch
Type: text/x-diff
Size: 2923 bytes
Desc: not available
URL: <http://lists.osmocom.org/pipermail/osmocom-sdr/attachments/20120808/46392eef/attachment.bin>


More information about the osmocom-sdr mailing list