Fwd: Unusual behaviour of taglib using threads.

[William Pitcock]

This is a double free. You are probably calling delete on the same 
resource in both threads.

You should set the resource to NULL (if it is a pointer), and then check 
to make sure that the resource is not NULL before calling delete on it. If 
you do this, you shouldn't encounter this problem.

It is possible that TagLib has a bug, but as far as I know it is 
reentrant.

- William

On Mon, 30 Apr 2007, Yogesh M wrote:

> ---------- Forwarded message ----------
> From: Yogesh M <yogeshm02 at gmail.com>
> Date: 30-Apr-2007 15:32
> Subject: Unusual behaviour of taglib using threads.
> To: "For discussion of multimedia (sound/video) issues under KDE"
> <kde-multimedia at kde.org>
>
>
> Hi
>
> I'm using taglib for reading tags from media files and having problem
> in the following context:
> Two threads are being used; one for reading tags for the playlist
> (using taglib) and other for building media collection which also
> reads tags using taglib. Both of the threads are entirely separate and
> have no dependence on each other in any way.
>
> The problem is that when one thread is building meta collection
> (lengthy affair ~ 1 min.) and I load a very large playlist (containing
> ~  90% of the total media files), the program terminates (with SIGABRT)
> and (interestingly) this is the point where both threads were
> reading/had read tags from the same file.
>
> What can be the problem?
>
> --
> Yogesh M
> Chandigarh, India
> http://mr-yogi.blogspot.com/
>
>
>
> -- 
> Yogesh M
> Chandigarh, India
> http://mr-yogi.blogspot.com/
>
>