Moncef Mechri 333f998123 Don't busy wait in the audio thread (ALSA)
When the emulation is paused and the ALSA backend is used, make the audio
thread wait on a condition variable instead of busy-waiting. This commit
fixes bug #7729

Since the ALSA API is not thread-safe, calls to snd_pcm_drop() and snd_pcm_prepare()
in AlsaSound::Clear() are protected by the same mutex as the condition variable in AlsaSound::SoundLoop()
to make sure that we do not call these functions while a call to
snd_pcm_writei() is ongoing.
2015-08-11 03:54:54 +02:00
..
2015-05-25 13:11:47 +02:00
2014-05-26 21:28:59 -07:00