[alsa-devel] PCM -- no need to release params mem nor close handle?

Jaroslav Kysela perex at suse.cz
Fri Mar 23 17:50:12 CET 2007

On Fri, 23 Mar 2007, intellij wrote:

> I am looking at PCM interface manual 
> http://www.alsa-project.org/alsa-doc/alsa-lib/pcm.html
> It tells that there are an open and set_params functions but nothing 
> about close(). Furthermore, the description of open() 
> http://www.alsa-project.org/alsa-doc/alsa-lib/group___p_c_m.html#g8340c7dc0ac37f37afe5e7c21d6c528b 
> neither tells that. Ok, I have realized from the examples. However, even 
> the examples demonstrate no params deallocation. You call the 
> snd_pcm_hw_params_alloca(&hwparams) but never release the allocated 
> memory. Why?

Do 'man alloca' and 'man malloc' and compare these two memory allocation 


Jaroslav Kysela <perex at suse.cz>
Linux Kernel Sound Maintainer
ALSA Project, SUSE Labs

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