[haiku-gsoc] Re: [HCD]: Bfs bug #1
- From: "Rene Gollent" <anevilyak@xxxxxxxxx>
- To: haiku-gsoc@xxxxxxxxxxxxx
- Date: Sat, 21 Jun 2008 14:06:27 -0500
On Sat, Jun 21, 2008 at 2:01 PM, Rene Gollent <anevilyak@xxxxxxxxx> wrote:
> On Sat, Jun 21, 2008 at 1:15 PM, Salvatore Benedetto <emitrax@xxxxxxxxx>
> wrote:
>> One question though, is it possible to see who is holding a semaphore?
>> That is, not who created it,
>> but who is holding it, because I haven't understand if the attached
>> screenshot shows a deadlock or not.
>>
>
> From that screenshot it looks like the scsi bus service forgot to
> release it somewhere..you'll notice thread 33 is in the waiting queue,
> and the sem was also last acquired and released by 33. Which implies
> that 33 tried to acquire it several times in a row without releasing
> it.
>
Incidentally, that thread appears to belong to the SCSI bus manager if
that helps at all, it's created in
src/add-ons/kernel/bus_managers/scsi/busses.c.
Regards,
Rene
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