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acddc0ed | 1 | // SPDX-License-Identifier: LGPL-2.1-or-later |
74971473 JG |
2 | /* |
3 | * This file is part of the PCEPlib, a PCEP protocol library. | |
4 | * | |
5 | * Copyright (C) 2020 Volta Networks https://voltanet.io/ | |
6 | * | |
74971473 JG |
7 | * Author : Brady Johnson <brady@voltanet.io> |
8 | * | |
9 | */ | |
10 | ||
11 | ||
12 | #ifndef PCEP_UTILS_INCLUDE_PCEP_UTILS_DOUBLE_LINKED_LIST_H_ | |
13 | #define PCEP_UTILS_INCLUDE_PCEP_UTILS_DOUBLE_LINKED_LIST_H_ | |
14 | ||
15 | typedef struct double_linked_list_node_ { | |
16 | struct double_linked_list_node_ *prev_node; | |
17 | struct double_linked_list_node_ *next_node; | |
18 | void *data; | |
19 | ||
20 | } double_linked_list_node; | |
21 | ||
22 | ||
23 | typedef struct double_linked_list_ { | |
24 | double_linked_list_node *head; | |
25 | double_linked_list_node *tail; | |
26 | unsigned int num_entries; | |
27 | ||
28 | } double_linked_list; | |
29 | ||
30 | ||
31 | /* Initialize a double linked list */ | |
32 | double_linked_list *dll_initialize(void); | |
33 | ||
34 | /* Destroy a double linked list, by freeing the handle and nodes, | |
35 | * user data will not be freed, and may be leaked if not handled | |
36 | * externally. */ | |
37 | void dll_destroy(double_linked_list *handle); | |
38 | /* Destroy a double linked list, by freeing the handle and nodes, | |
39 | * and the user data. */ | |
40 | void dll_destroy_with_data(double_linked_list *handle); | |
41 | void dll_destroy_with_data_memtype(double_linked_list *handle, | |
42 | void *data_memory_type); | |
43 | ||
44 | /* Creates a node and adds it as the first item in the list */ | |
45 | double_linked_list_node *dll_prepend(double_linked_list *handle, void *data); | |
46 | ||
47 | /* Creates a node and adds it as the last item in the list */ | |
48 | double_linked_list_node *dll_append(double_linked_list *handle, void *data); | |
49 | ||
50 | /* Delete the first node in the list, and return the data */ | |
51 | void *dll_delete_first_node(double_linked_list *handle); | |
52 | ||
53 | /* Delete the last node in the list, and return the data */ | |
54 | void *dll_delete_last_node(double_linked_list *handle); | |
55 | ||
56 | /* Delete the designated node in the list, and return the data */ | |
57 | void *dll_delete_node(double_linked_list *handle, | |
58 | double_linked_list_node *node); | |
59 | ||
60 | #endif /* PCEP_UTILS_INCLUDE_PCEP_UTILS_DOUBLE_LINKED_LIST_H_ */ |