[mythtv] Ticket #10414: HDHomeRun: Bad Recordings

[Daniel Kristjansson]

On Sun, 2012-03-11 at 15:29 -0500, David Engel wrote:

> Daniel, I traced my high CPU usage to the following commit.

> Specifically, it is the following code in DTVRecorder::BufferedWrite().
> 
>     if (!timeOfFirstData.isValid() && curRecording)
>     {
>         QMutexLocker locker(&statisticsLock);
>         timeOfFirstData = mythCurrentDateTime();
>     }
> 
>     uint64_t now = mythCurrentDateTime().toTime_t();
>     if (!timeOfLatestData.isValid() || (now - timeOfLatestData.toTime_t() >= 5))
>     {
>         QMutexLocker locker(&statisticsLock);
>         timeOfLatestData = mythCurrentDateTime();
>     }

Makes sense, QDateTime can take up crazy amounts of CPU. I'll rework
this so we only need to look up the time every five seconds or so.

-- Daniel