[mythtv] [PATCH] mythfrontend segfault due to NULL thread priv request

[Isaac Richards]

On Friday 10 September 2004 12:21 am, Isaac Richards wrote:
> On Thursday 09 September 2004 11:48 pm, Frank Riley wrote:
> > This bug is not fixed. The problem is there is no synchronization between
> > the video thread and the thread that handles the priv requests. The video
> > thread that gets placed on the priv request queue is created on the stack
> > in NuppelVideoPlayer::StartPlaying(). If StartPlaying() finishs (i.e. the
> > video is done playing) before the priv request thread gets around to
> > handling the request on the queue, pthread_setschedparam blows up because
> > the thread pointer it has is now pointing into la-la land. This is easily
> > reproducible (at least on my box) by going to the delete recordings
> > screen and quickly scrolling through the recordings until it blows up (as
> > long as the preview window is turned on). I'm guessing there is a
> > separate thread to change the priority only because we only want to have
> > to set
> > mythfrontend as setuid. Is that correct?
>
> Yup, and your assessment of the issue is also 100% correct.  I'm probably
> going to end up disabling the priority thread temporarily for the release,
> then fix it afterwards..

Ah, nevermind - got an easy workaround in place.

Isaac