[Alsaplayer-devel] Bad pause behavior, and thread counts...

[Dominique Michel]

Le Wed, 14 Feb 2007 16:16:43 -0600,
"Austin Bingham" <austin.bingham at gmail.com> a écrit :

> I've been using the svn head version for the past week or so, and I've
> noticed a problem. If I pause for a long time (say an hour, but I
> don't have hard numbers on this), when I unpause it, I get a wierd
> "chattering" effect. It's as if the player is playing short
> (sub-second) segments of the file with a short pause between each. I
> can usually knock it out of this state by going to the next song in
> the playlist, but it's weird. FWIW, I'm running the player in daemon
> mode and communicating with it via a custom python interface using the
> control.h methods.
> 
Which configure option do you use? Only --enable-debug or also
--enable-maintainer-mode?


> Also, in a mild attempt to look into this problem, I've been running
> alsaplayer under gdb. I noticed that alsaplayer was using 38 threads!
> What could it possibly be doing that would justify this? Maybe this is
> the expected behavior, but it does seem a bit odd.
>
I don't know much about gdb usage. I just try to compile alsaplayer with
--enable-debug and to run it under gdb.

In one console:
 $ alsaplayer -i daemon
In another one:
 $ alsaplayer -e "01 - Sodade.mp3"

If I check with htop, I get only 3 threads.

And with gdb (for all 3 threads):

 Reading symbols
from /usr/lib/alsaplayer/interface/libdaemon_interface.so...done. Loaded
symbols for /usr/lib/alsaplayer/interface/libdaemon_interface.so 0xb7f73410
in ?? ()

And the program stop. I run continue and it play again.
At the end of the song:

[Thread -1231819872 (zombie) exited]

And gdm hang if I run continue. Nothing append either if I try to enqeue a
new song. 

But if I enqueue a few song before the end of the first one, I get:

[Thread -1232360544 (zombie) exited]
[New Thread -1232360544 (LWP 11868)]

And it is now four threads in htop. I get this with each new song, so each new
song add a thread.

Dominique

> Anyhow, I'd be happy to look into either of these problems when I have
> time, but some pointers on where to look would be helpful if anyone
> has any idea what's going on.
> 
> Austin
> 
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-- 
Dominique Michel

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