procqueue: separate queue check function

In order to give advanced control over a processing queue,
it would be better to have the checking function separated from
the osmo_gapk_pq_prepare(). Moreover, this change introduces an
additional 'strict' checking mode that requires a queue to have
a source item first and a sink item in the last position.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/app_osmo_gapk.c b/src/app_osmo_gapk.c
index 6543eef..2aac0aa 100644
--- a/src/app_osmo_gapk.c
+++ b/src/app_osmo_gapk.c
@@ -521,6 +521,7 @@ make_processing_chain(struct gapk_state *gs)
 	const struct osmo_gapk_codec_desc *codec_in, *codec_out;
 
 	int need_dec, need_enc;
+	int rc;
 
 	LOGP(DAPP, LOGL_NOTICE, "Creating a processing queue\n");
 
@@ -627,6 +628,11 @@ make_processing_chain(struct gapk_state *gs)
 		return -1;
 	}
 
+	/* Check the processing queue in strict mode */
+	rc = osmo_gapk_pq_check(gs->pq, 1);
+	if (rc)
+		return rc;
+
 	return 0;
 }