Re: Why do I get broken pipe on write to a pcm in statePREPARED?

[Takashi Iwai <tiwai@suse.de>]

At Fri, 04 Oct 2002 20:04:00 +0200,
Abramo Bagnara wrote:
> 
> Takashi Iwai wrote:
> > 
> > At Fri, 4 Oct 2002 10:14:09 +0200,
> > Anders Torger wrote:
> > >
> > > Uhhh... I guess ignoring me works just as well :-)
> > 
> > not ignored but pending :)
> > 
> > Abramo, do you still have objection to change the default behavior?
> > 
> > i don't mind that even the new behavior is optional e.g. via
> > snd_pcm_sw_params.  but i believe the current behavior is not expected
> > as a normal one, so it's enough reason to change it.
> > 
> > also, if someone (Tim?) already has a patch, please send it here.
> > it seems my last patch doesn't work properly...
> 
> For what it worths my objections are still there.
> 
> I'm strongly convinced that to have poll waiting for something that
> cannot happens is a big mistake (also as an optional behaviour).

it CAN happen if you have multi-threads.
the problem is that we have no option to block the poll.


> That apart I'm sure that to make a change in actual behaviour between
> rcX and 1.0 is a professional suicide. However it's _your_ professional
> suicide so... ;-)))
 
yes, i know it well ;)

i don't like to change this inevitably, too.
and as mentioned above, i don't mind to add an option as sw_params,
etc. for the new behavior.

but the current behavior is incorrect from the interpretation of
POSIX.  so this must be a bug.
if we have to change it, then i would choose the new one, because it's
more intuitive without exception.


Takashi


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