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

[John P Poet]

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
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