unfinished work

src/inc_internal/rcu_hash.h

@@ -0,0 +1,59 @@
+/*
+**********************************************************************************************
+*	File: maat_rhash.h
+*   Description: maat rcu hashtable
+*	Authors: Liu WenTan <liuwentan@geedgenetworks.com>
+*	Date:    2022-10-31
+*   Copyright: (c) 2018-2022 Geedge Networks, Inc. All rights reserved.
+***********************************************************************************************
+*/
+
+#ifndef _RCU_HASH_H_
+#define _RCU_HASH_H_
+
+#ifdef __cpluscplus
+extern "C"
+{
+#endif
+
+#include "uthash/uthash.h"
+
+/* rcu hash table */
+struct rcu_hash_table;
+
+struct rcu_hash_table *rcu_hash_new(void (* data_free)(void *data));
+
+void rcu_hash_free(struct rcu_hash_table *htable);
+
+/**
+ * @brief the data added just in updating stage
+ *        after call rcu_hash_commit, it in effective stage
+*/
+void rcu_hash_add(struct rcu_hash_table *htable, const char *key, size_t key_len, void *data);
+
+void rcu_hash_del(struct rcu_hash_table *htable, const char *key, size_t key_len);
+
+/**
+ * @brief find in effective nodes
+ * 
+ * @param htable:  the rcu_hash_table
+ * @param key:     the key used for searching in the hash table
+ * @param key_len: the key's length
+ * 
+ * @retval NULL or 
+*/
+void *rcu_hash_find(struct rcu_hash_table *htable, const char *key, size_t key_len);
+
+size_t rcu_hash_counts(struct rcu_hash_table *htable);
+
+
+/**
+ * @brief make add/del effective
+*/
+void rcu_hash_commit(struct rcu_hash_table *htable);
+
+#ifdef __cpluscplus
+}
+#endif
+
+#endif