Implemented the bug cleanup at application exit

Fixes most memory leaks in softmixer.
The concept of 'transaction' for dynamic streams has
been generalized to the objects created at startup.
The cleanup is done via a handle set through a atexit()
call.
Also added a missing strdup in alsa-api-loop, that fixes
a double free.

Warning, the bluez-alsa PCM are not closed in this
version. This is intentional due to a BUG in the
bluealsa ioplug PCM, that crashes upon close
(pthread_cancel is used to terminate the io_thread
and things get very bad. I have a pending fix for
that, relying on a cancellation pipe, but deeper
testing must be done).
As an effect, only one phone call can be made,
else 4a needs to be restarted

Change-Id: Idb84cafe15f17c0ef02fcc70296d541dc55a2dcf
Signed-off-by: Thierry Bultel <thierry.bultel@iot.bzh>
Signed-off-by: Stephane Desneux <stephane.desneux@iot.bzh>

1 files changed, 6 insertions, 1 deletions

diff --git a/plugins/alsa/alsa-transaction.h b/plugins/alsa/alsa-transaction.h
index a0af0ae..dd6e91b 100644
--- a/plugins/alsa/alsa-transaction.h
+++ b/plugins/alsa/alsa-transaction.h
@@ -13,7 +13,8 @@ typedef void (*AlsaTransactionDestructor) (struct SoftMixerT_ *, void*);
 typedef struct {
 	const char * uid;
 	struct SoftMixerT_*  mixer;
-	struct cds_list_head list;
+	struct cds_list_head item_list; // list of items
+	struct cds_list_head transaction_node; // node in a list of transactions
 } AlsaMixerTransaction;
 
 typedef struct {
@@ -24,10 +25,14 @@ typedef struct {
 
 extern AlsaMixerTransaction * AlsaMixerTransactionNew(struct SoftMixerT_ * api, const char*);
 
+extern void AlsaMixerTransactionDelete(AlsaMixerTransaction * transaction);
+
 extern void AlsaMixerTransactionDataListDestroy(AlsaMixerTransaction*);
 
 extern bool AlsaMixerTransactionObjectAdd(AlsaMixerTransaction*, void * object, AlsaTransactionDestructor destructor);
 
+extern void AlsaMixerTransactionObjectForget(AlsaMixerTransaction* list, void * object);
+
 extern void AlsaMixerTransactionDoCleanup(AlsaMixerTransaction*);
 
 extern bool AlsaMixerTransactionVerbCreate(AlsaMixerTransaction*);