Instead of having a parameter to enable/disable them (which was also
ignored by the source code side), simply identify NetBSD 5 (when the atomic
ops were implemented the first time) in a $host switch and ignore checking
for libatomic_ops.
The type -p check is not compatible with POSIX shells, and indeed fails
when used with the FreeBSD 8 default shell. Instead the AC_CHECK_PROG macro
is written properly to look for the command.
FIONREAD on OpenSolaris is declared in sys/filio.h. The RTP modules already
rely on the presence of FIONREAD, and check for the header, so this brings
the pipe source and sink modules on par with them.
Without this change, on OpenSolaris, it's possible that the compiler will
be reported, by default, as failing to produce executables, since
_XOPEN_SOURCE=600 requires a C99 compiler to compile even the simples of
the programs.
volume_limit sets maximum volume that can be set from the module
default is PA_VOLUME_NORM*3/2 (150%)
volume_step sets step in volume changing
default is PA_VOLUME_NORM/20
values are of raw pa_volume_t type
added function to increase volume not exceeding specified limit
simply changed PA_VOLUME_MAX to 'limit' in pa_cvolume_inc
pa_cvolume_inc now calls pa_cvolume_inc_clamp with PA_VOLUME_MAX limit
In virtual machines sound card clocks and OS scheduling tend to become
unreliable, adding various 'uneven' latencies. The adaptive algorithm
that handles drop-outs does not handle it this well: in contrast to
drop-outs on real machines that are evenly distributed, small and can
easily be encountered via the adpative algorithms, drop-outs in VMs tend
to happen abruptly, and massively, which is not easy to counter.
This patch simply disables timer based scheduling in VMs reverting to
classic IO based scheduling. This should help make PA perform better in
VMs.
https://bugzilla.redhat.com/show_bug.cgi?id=532775
Lennart,
Apparently I was debugging this at the same time as you. I can't figure out
why my Fedora 11 install with glibc-2.10 has a glibc realpath that doesn't
match the gnu documentation and returns null. But it does.
Your commit aa8ce5bb9b almost fixed my
problem, but it needs a tweak.
Thanks,
David Yoder
On Wed, Sep 16, 2009 at 11:57:04PM +0200, Lennart Poettering wrote:
> On Wed, 16.09.09 15:15, Daniel Mack (daniel@caiaq.de) wrote:
>
> > + s = pa_xnew(pa_semaphore, 1);
> > + MPCreateSemaphore(UINT_MAX, value, &(s->sema));
> > + pa_assert(s->sema != 0);
>
> Hmm, I'd prefer if the ret val of MPCreateSemaphore() would be checked
> here.
>
> Also I find it a bit weird checking for s->sema, though not
> initializing it to 0 in the beginning. If the call actually failed,
> then the assert will check uninitialized memory. Also, comparing
> pointers with 0 sucks. That should be NULL.
>
> Given that this can not realisitically fail, only in OOM or OOM-like
> situations in which case we abort anyway it mght be enough just writing:
>
> pa_assert_se(MPCreateSemaphore(UINT_MAX, value, &s->sema) == 0);
>
> (Assuming that success is signalled by retval == 0 on MacOSX)
>
> > +void pa_semaphore_free(pa_semaphore *s) {
> > + pa_assert(s);
> > + MPDeleteSemaphore(s->sema);
>
> Same here.
>
> > + pa_xfree(s);
> > +}
> > +
> > +void pa_semaphore_post(pa_semaphore *s) {
> > + pa_assert(s);
> > + MPSignalSemaphore(s->sema);
>
> And here.
>
> > +}
> > +
> > +void pa_semaphore_wait(pa_semaphore *s) {
> > + pa_assert(s);
> > + /* should probably check return value (-ve is error), noErr is ok. */
> > + MPWaitOnSemaphore(s->sema, kDurationForever);
>
> And here.
Ok, done. See the patch below.
Daniel
>From 26df2fbae6d9215a3ae084876fb5f79e4d9cf4f0 Mon Sep 17 00:00:00 2001
From: Kim Lester <kim@dfusion.com.au>
Date: Wed, 16 Sep 2009 09:23:39 +0800
Subject: [PATCH] Mac OS X: add semaphore implementation
