First commit XiUOS

kernel/include/xs_avltree.h

@@ -0,0 +1,66 @@
+/*
+* Copyright (c) 2020 AIIT XUOS Lab
+* XiUOS is licensed under Mulan PSL v2.
+* You can use this software according to the terms and conditions of the Mulan PSL v2.
+* You may obtain a copy of Mulan PSL v2 at:
+*        http://license.coscl.org.cn/MulanPSL2
+* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+* See the Mulan PSL v2 for more details.
+*/
+
+/**
+* @file:    xs_avltree.h
+* @brief:   function declaration and structure defintion of avl tree
+* @version: 1.0
+* @author:  AIIT XUOS Lab
+* @date:    2020/4/20
+*
+*/
+
+#ifndef AVL_TREE_H
+#define AVL_TREE_H
+
+#include <xs_base.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+#ifdef KERNEL_AVL_TREE
+struct AvlNode
+{
+    int32 data;
+    uint32 height;
+
+    struct AvlNode *left;
+    struct AvlNode *right;
+};
+
+typedef struct AvlNode *AvlNodeType;
+
+#ifndef AVL_MAX
+#define AVL_MAX(a, b) ((a) > (b) ? (a) : (b))
+#endif
+
+#ifndef AVL_ABS
+#define AVL_ABS(a) ((a > 0) ? (a) : (-a))
+#endif
+
+/*This function will insert data to the avl tree*/
+AvlNodeType AvlTreeInsertNode(AvlNodeType avl_node, int32 data);
+
+/*This function will delete data from the avl tree*/
+AvlNodeType AvlTreeDeleteNode(AvlNodeType avl_node, int32 data);
+
+/*This function will modify certain data of the avl tree*/
+AvlNodeType AvlNodeModifyNode(AvlNodeType avl_node, int32 src_data, int32 dst_data);
+
+/*This function will return the avl node which has the data*/
+AvlNodeType AvlNodeSearchNode(AvlNodeType avl_node, int32 data);
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+#endif