+#include <urcu-call-rcu.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * struct rcu_ht_node and struct _rcu_ht_node should be aligned on
+ * 4-bytes boundaries because the two lower bits are used as flags.
+ */
+
+struct _rcu_ht_node {
+ struct rcu_ht_node *next; /* ptr | DUMMY_FLAG | REMOVED_FLAG */
+ unsigned long reverse_hash;
+};
+
+struct rcu_ht_node {
+ /* cache-hot for iteration */
+ struct _rcu_ht_node p; /* needs to be first field */
+ void *key;
+ unsigned int key_len;
+ /* cache-cold for iteration */
+ struct rcu_head head;
+};
+
+struct rcu_ht;