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1 | /* crypto/pqueue/pqueue.h */ |
2 | /* | |
3 | * DTLS implementation written by Nagendra Modadugu | |
4 | * (nagendra@cs.stanford.edu) for the OpenSSL project 2005. | |
5 | */ | |
6 | /* ==================================================================== | |
7 | * Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved. | |
8 | * | |
9 | * Redistribution and use in source and binary forms, with or without | |
10 | * modification, are permitted provided that the following conditions | |
11 | * are met: | |
12 | * | |
13 | * 1. Redistributions of source code must retain the above copyright | |
14 | * notice, this list of conditions and the following disclaimer. | |
15 | * | |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in | |
18 | * the documentation and/or other materials provided with the | |
19 | * distribution. | |
20 | * | |
21 | * 3. All advertising materials mentioning features or use of this | |
22 | * software must display the following acknowledgment: | |
23 | * "This product includes software developed by the OpenSSL Project | |
24 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
25 | * | |
26 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
27 | * endorse or promote products derived from this software without | |
28 | * prior written permission. For written permission, please contact | |
29 | * openssl-core@OpenSSL.org. | |
30 | * | |
31 | * 5. Products derived from this software may not be called "OpenSSL" | |
32 | * nor may "OpenSSL" appear in their names without prior written | |
33 | * permission of the OpenSSL Project. | |
34 | * | |
35 | * 6. Redistributions of any form whatsoever must retain the following | |
36 | * acknowledgment: | |
37 | * "This product includes software developed by the OpenSSL Project | |
38 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
39 | * | |
40 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
41 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
42 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
43 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
44 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
45 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
46 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
47 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
49 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
50 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
51 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
52 | * ==================================================================== | |
53 | * | |
54 | * This product includes cryptographic software written by Eric Young | |
55 | * (eay@cryptsoft.com). This product includes software written by Tim | |
56 | * Hudson (tjh@cryptsoft.com). | |
57 | * | |
58 | */ | |
59 | ||
60 | #ifndef HEADER_PQUEUE_H | |
61 | # define HEADER_PQUEUE_H | |
62 | ||
63 | # include <stdio.h> | |
64 | # include <stdlib.h> | |
65 | # include <string.h> | |
66 | ||
67 | #ifdef __cplusplus | |
68 | extern "C" { | |
69 | #endif | |
70 | typedef struct _pqueue *pqueue; | |
71 | ||
72 | typedef struct _pitem { | |
73 | unsigned char priority[8]; /* 64-bit value in big-endian encoding */ | |
74 | void *data; | |
75 | struct _pitem *next; | |
76 | } pitem; | |
77 | ||
78 | typedef struct _pitem *piterator; | |
79 | ||
80 | pitem *pitem_new(unsigned char *prio64be, void *data); | |
81 | void pitem_free(pitem *item); | |
82 | ||
83 | pqueue pqueue_new(void); | |
84 | void pqueue_free(pqueue pq); | |
85 | ||
86 | pitem *pqueue_insert(pqueue pq, pitem *item); | |
87 | pitem *pqueue_peek(pqueue pq); | |
88 | pitem *pqueue_pop(pqueue pq); | |
89 | pitem *pqueue_find(pqueue pq, unsigned char *prio64be); | |
90 | pitem *pqueue_iterator(pqueue pq); | |
91 | pitem *pqueue_next(piterator *iter); | |
92 | ||
93 | void pqueue_print(pqueue pq); | |
94 | int pqueue_size(pqueue pq); | |
95 | ||
96 | #ifdef __cplusplus | |
97 | } | |
98 | #endif | |
99 | #endif /* ! HEADER_PQUEUE_H */ |