[fluid-dev] Possible freeze in delete_fluid_alsa_audio_driver()

[Sven Meier]

Hi all,

I'm experiencing a strange freeze in delete_fluid_alsa_audio_driver():

0x9da58ae5    fluid_thread_join + 0x1d
0x9da4d388    delete_fluid_alsa_audio_driver + 0x47
0x9da81c74    delete_fluid_audio_driver + 0x59

The attempt to join the (synthesizer?) thread never returns (line #332):

  dev->cont = 0;
  if (dev->thread)
    fluid_thread_join (dev->thread); /* never returns */

To trigger this issue the following prerequisites have to be met:
- Jack is running
- a fluidsynth instance is created with "audio.driver" explicitely set 
to "alsa".
- finally the fluidsynth instance is deleted.

I've just double checked by starting fluidsynth from the command line 
and this seems to expose the same issue:

$ fluidsynth -a alsa
FluidSynth version 1.1.3
....
fluidsynth: debug: Using 'alsa' audio driver
fluidsynth: debug: Using 'alsa_seq' midi driver
Type 'help' for help topics.
....
> quit
cheers!
<nothing happens after cheers>

BTW I'm using the latest fluidsynth from SVN.

Any ideas?

Sven