Merged in dstaesse/ouroboros/be-rbuff-sleep (pull request #120)

lib: shm_ap_rbuff: sleep when read on empty rbuff

1 files changed, 5 insertions, 7 deletions

diff --git a/src/ipcpd/shim-udp/main.c b/src/ipcpd/shim-udp/main.c
index c6c16ebf..48fa141e 100644
--- a/src/ipcpd/shim-udp/main.c
+++ b/src/ipcpd/shim-udp/main.c
@@ -775,6 +775,11 @@ static void * ipcp_udp_sdu_loop(void * o)
                 int len = 0;
                 char * buf;
 
+                e = shm_ap_rbuff_read(_ap_instance->rb);
+                if (e == NULL) {
+                        continue;
+                }
+
                 rw_lock_rdlock(&_ipcp->state_lock);
 
                 if (_ipcp->state != IPCP_ENROLLED) {
@@ -782,13 +787,6 @@ static void * ipcp_udp_sdu_loop(void * o)
                         return (void *) 1; /* -ENOTENROLLED */
                 }
 
-                e = shm_ap_rbuff_read(_ap_instance->rb);
-
-                if (e == NULL) {
-                        rw_lock_unlock(&_ipcp->state_lock);
-                        continue;
-                }
-
                 len = shm_du_map_read_sdu((uint8_t **) &buf,
                                           _ap_instance->dum,
                                           e->index);