audio: clean up before monitor clean up

Since aa5cb7f5e, the chardevs are being cleaned up when leaving qemu,
before the atexit() handlers. audio_cleanup() may use the monitor to
notify of changes. For compatibility reasons, let's clean up audio
before the monitor so it keeps emitting monitor events.

The audio_atexit() function is made idempotent (so it can be called
multiple times), and renamed to audio_cleanup(). Since coreaudio
backend is using a 'isAtexit' code path, change it to check
audio_is_cleaning_up() instead, so the path is taken during normal
exit.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20160801112343.29082-3-marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/vl.c b/vl.c
index a14c438d38..c4eeaffb91 100644
--- a/vl.c
+++ b/vl.c
@@ -4612,6 +4612,7 @@ int main(int argc, char **argv, char **envp)
 
     /* vhost-user must be cleaned up before chardevs.  */
     net_cleanup();
+    audio_cleanup();
     monitor_cleanup();
     qemu_chr_cleanup();