[mythtv] [mythtv-commits] Ticket #6719: Add channel change monitoring into the signal monitor

[Eric Bosch]

John P Poet wrote:
> On Thu, Sep 3, 2009 at 10:13 AM, Eric Bosch<eric.bosch at comcast.net> wrote:
>> Mark Buechler wrote:
>>> Hi
>>>
>>> On Tue, Sep 1, 2009 at 12:54 PM, MythTV <mythtv at cvs.mythtv.org
>>> <mailto:mythtv at cvs.mythtv.org>> wrote:
>>>
>>>     #6719: Add channel change monitoring into the signal monitor
>>>     ------------------------------+---------------------------------------------
>>>      Reporter:  jppoet at gmail.com <mailto:jppoet at gmail.com>  |
>>>      Owner:  ijr
>>>         Type:  patch             |       Status:  new
>>>      Priority:  minor             |    Milestone:  unknown
>>>     Component:  MythTV - General  |      Version:  unknown
>>>      Severity:  medium            |   Resolution:
>>>      Mlocked:  0                 |
>>>     ------------------------------+---------------------------------------------
>>>
>>>     Comment(by eric.bosch at comcast.net <mailto:eric.bosch at comcast.net>):
>>>
>>>      I will test this again.  It was working well before, but I dropped
>>>     using
>>>      it at one point due to a different problem.  Now, after an upgrade to
>>>      current CVS today (21623) my firewire capture has ceased to function,
>>>      failing to lock on signal, even though firewire tester shows it as fine
>>>
>>>     --
>>>
>>> I suspect there may be a race condition here between
>>> SetupSignalMonitor() and SetupDTVSignalMonitor(). SetupSignalMonitor()
>>> may be attempting to
>>> GetDTVSignalMonitor()->GetStreamData()->SetVideoStreamsRequired(0) while
>>> GetStreamData() is NULL before SetupDTVSignalMonitor() has a chance to
>>> initialize it.. but I could be wrong.
>>>
>>> - Mark.
>>>
>>>
>>> ------------------------------------------------------------------------
>>>
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>> I'm seeing some deadlocks on channel changes with this using a Firewire
>> and pvr 150 tuners
> 
> Can you please attach a back-trace from when this deadlocks.  I am not
> sure when I will have time to look at it, but it may be difficult for
> me to track without a back-trace.
> 
> Thanks,
> 
> John
I will try to do this as soon as I return from vacation, likely towards
the end of next week.