1 /*
2  * Copyright (c) 2022 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef CERT_MANAGER_DOUBLE_LIST_H
17 #define CERT_MANAGER_DOUBLE_LIST_H
18 
19 #include "cm_type.h"
20 
21 #ifdef __cplusplus
22 extern "C" {
23 #endif
24 
25 struct DoubleList {
26     struct DoubleList *prev;
27     struct DoubleList *next;
28 };
29 
30 void CmInitList(struct DoubleList *listNode);
31 
32 void CmAddNodeAfterListHead(struct DoubleList *listHead, struct DoubleList *listNode);
33 
34 void CmAddNodeAtListTail(struct DoubleList *listHead, struct DoubleList *listNode);
35 
36 void CmRemoveNodeFromList(struct DoubleList *listNode);
37 
38 #ifdef __cplusplus
39 }
40 #endif
41 
42 /*
43  * CM_DLIST_ITER - iterate over double list of struct st, double list should be the first member of struct st
44  * @st:        the struct in the double list
45  * @head:      the head for double list.
46  */
47 #define CM_DLIST_ITER(st, head) \
48     struct DoubleList *p = NULL; \
49     for (p = (head)->next, (st) = (__typeof__(st))p; p != (head); p = p->next, (st) = (__typeof__(st))p)
50 
51 #define CM_DLIST_SAFT_ITER(st, head) \
52     struct DoubleList *p = NULL; \
53     struct DoubleList tmp = { NULL, NULL }; \
54     for (p = (head)->next, (st) = (__typeof__(st))p, tmp = *p; p != (head); \
55         p = tmp.next, tmp = *p, (st) = (__typeof__(st))p)
56 
57 #endif /* CERT_MANAGER_DOUBLE_LIST_H */
58 
59