--- /dev/null
+#ifndef SKIPLIST_H
+#define SKIPLIST_H
+
+#include "datatype.h"
+#include "map.h"
+
+typedef struct sl skiplist_t;
+
+extern map_type_t MAP_TYPE_SKIPLIST;
+
+skiplist_t *sl_alloc (const datatype_t *key_type);
+uint64_t sl_cas (skiplist_t *sl, void *key, uint64_t expected_val, uint64_t new_val);
+uint64_t sl_lookup (skiplist_t *sl, void *key);
+uint64_t sl_remove (skiplist_t *sl, void *key);
+uint64_t sl_count (skiplist_t *sl);
+void sl_print (skiplist_t *sl);
+void sl_free (skiplist_t *sl);
+
+#endif//SKIPLIST_H