diff --git a/include/villas/queue_signalled.h b/include/villas/queue_signalled.h
index bf6913855..d36ae30a3 100644
--- a/include/villas/queue_signalled.h
+++ b/include/villas/queue_signalled.h
@@ -18,10 +18,16 @@ struct queue_signalled {
 	pthread_mutex_t mutex;		/**< Mutex for ready. */
 };
 
+#define queue_signalled_available(q) queue_available(&((q)->queue))
+
 int queue_signalled_init(struct queue_signalled *qs, size_t size, struct memtype *mem);
 
 int queue_signalled_destroy(struct queue_signalled *qs);
 
+int queue_signalled_push(struct queue_signalled *qs, void *ptr);
+
+int queue_signalled_pull(struct queue_signalled *qs, void **ptr);
+
 int queue_signalled_push_many(struct queue_signalled *qs, void *ptr[], size_t cnt);
 
 int queue_signalled_pull_many(struct queue_signalled *qs, void *ptr[], size_t cnt);
diff --git a/lib/queue_signalled.c b/lib/queue_signalled.c
index 0bbbcc7e8..3af163f5c 100644
--- a/lib/queue_signalled.c
+++ b/lib/queue_signalled.c
@@ -47,6 +47,21 @@ int queue_signalled_destroy(struct queue_signalled *qs)
 	return 0;
 }
 
+int queue_signalled_push(struct queue_signalled *qs, void *ptr)
+{
+	int ret;
+	
+	ret = queue_push(&qs->queue, ptr);
+	if (ret < 0)
+		return ret;
+	
+	pthread_mutex_lock(&qs->mutex);
+	pthread_cond_broadcast(&qs->ready);
+	pthread_mutex_unlock(&qs->mutex);
+
+	return ret;
+}
+
 int queue_signalled_push_many(struct queue_signalled *qs, void *ptr[], size_t cnt)
 {
 	int ret;
@@ -62,6 +77,18 @@ int queue_signalled_push_many(struct queue_signalled *qs, void *ptr[], size_t cn
 	return ret;
 }
 
+int queue_signalled_pull(struct queue_signalled *qs, void **ptr)
+{
+	/* Make sure that qs->mutex is unlocked if this thread gets cancelled. */
+	pthread_cleanup_push((void (*)(void*)) pthread_mutex_unlock, &qs->mutex);
+	pthread_mutex_lock(&qs->mutex);
+	pthread_cond_wait(&qs->ready, &qs->mutex);
+	pthread_mutex_unlock(&qs->mutex);
+	pthread_cleanup_pop(0);
+	
+	return queue_pull(&qs->queue, ptr);
+}
+
 int queue_signalled_pull_many(struct queue_signalled *qs, void *ptr[], size_t cnt)
 {
 	/* Make sure that qs->mutex is unlocked if this thread gets cancelled. */