rcuja: add fallback nodes

[userspace-rcu.git] / rcuja / rcuja-shadow-nodes.c

diff --git a/rcuja/rcuja-shadow-nodes.c b/rcuja/rcuja-shadow-nodes.c
index 3a5de33669a9f53db204e6e473c9e928f48803c7..89b4c4517adfe1d6619b8a6a003f431ded283510 100644 (file)
--- a/rcuja/rcuja-shadow-nodes.c
+++ b/rcuja/rcuja-shadow-nodes.c
@@ -220,7 +220,7 @@ void rcuja_shadow_unlock(struct cds_ja_shadow_node *shadow_node)
 }
 
 __attribute__((visibility("protected")))
-int rcuja_shadow_set(struct cds_lfht *ht,
+struct cds_ja_shadow_node *rcuja_shadow_set(struct cds_lfht *ht,
                struct cds_ja_inode *new_node,
                struct cds_ja_shadow_node *inherit_from)
 {
@@ -230,7 +230,7 @@ int rcuja_shadow_set(struct cds_lfht *ht,
 
        shadow_node = calloc(sizeof(*shadow_node), 1);
        if (!shadow_node)
-               return -ENOMEM;
+               return NULL;
 
        shadow_node->node = new_node;
        /*
@@ -242,7 +242,7 @@ int rcuja_shadow_set(struct cds_lfht *ht,
                shadow_node->lock = calloc(sizeof(*shadow_node->lock), 1);
                if (!shadow_node->lock) {
                        free(shadow_node);
-                       return -ENOMEM;
+                       return NULL;
                }
                pthread_mutex_init(shadow_node->lock, NULL);
        }
@@ -258,9 +258,9 @@ int rcuja_shadow_set(struct cds_lfht *ht,
 
        if (ret_node != &shadow_node->ht_node) {
                free(shadow_node);
-               return -EEXIST;
+               return NULL;
        }
-       return 0;
+       return shadow_node;
 }
 
 static