172c33676SMaxim Ag /* $OpenBSD: pqueue.h,v 1.4 2016/11/04 18:28:58 guenther Exp $ */ 2f5b1c8a1SJohn Marino 3f5b1c8a1SJohn Marino /* 4f5b1c8a1SJohn Marino * DTLS implementation written by Nagendra Modadugu 5f5b1c8a1SJohn Marino * (nagendra@cs.stanford.edu) for the OpenSSL project 2005. 6f5b1c8a1SJohn Marino */ 7f5b1c8a1SJohn Marino /* ==================================================================== 8f5b1c8a1SJohn Marino * Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved. 9f5b1c8a1SJohn Marino * 10f5b1c8a1SJohn Marino * Redistribution and use in source and binary forms, with or without 11f5b1c8a1SJohn Marino * modification, are permitted provided that the following conditions 12f5b1c8a1SJohn Marino * are met: 13f5b1c8a1SJohn Marino * 14f5b1c8a1SJohn Marino * 1. Redistributions of source code must retain the above copyright 15f5b1c8a1SJohn Marino * notice, this list of conditions and the following disclaimer. 16f5b1c8a1SJohn Marino * 17f5b1c8a1SJohn Marino * 2. Redistributions in binary form must reproduce the above copyright 18f5b1c8a1SJohn Marino * notice, this list of conditions and the following disclaimer in 19f5b1c8a1SJohn Marino * the documentation and/or other materials provided with the 20f5b1c8a1SJohn Marino * distribution. 21f5b1c8a1SJohn Marino * 22f5b1c8a1SJohn Marino * 3. All advertising materials mentioning features or use of this 23f5b1c8a1SJohn Marino * software must display the following acknowledgment: 24f5b1c8a1SJohn Marino * "This product includes software developed by the OpenSSL Project 25f5b1c8a1SJohn Marino * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 26f5b1c8a1SJohn Marino * 27f5b1c8a1SJohn Marino * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 28f5b1c8a1SJohn Marino * endorse or promote products derived from this software without 29f5b1c8a1SJohn Marino * prior written permission. For written permission, please contact 30f5b1c8a1SJohn Marino * openssl-core@OpenSSL.org. 31f5b1c8a1SJohn Marino * 32f5b1c8a1SJohn Marino * 5. Products derived from this software may not be called "OpenSSL" 33f5b1c8a1SJohn Marino * nor may "OpenSSL" appear in their names without prior written 34f5b1c8a1SJohn Marino * permission of the OpenSSL Project. 35f5b1c8a1SJohn Marino * 36f5b1c8a1SJohn Marino * 6. Redistributions of any form whatsoever must retain the following 37f5b1c8a1SJohn Marino * acknowledgment: 38f5b1c8a1SJohn Marino * "This product includes software developed by the OpenSSL Project 39f5b1c8a1SJohn Marino * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 40f5b1c8a1SJohn Marino * 41f5b1c8a1SJohn Marino * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 42f5b1c8a1SJohn Marino * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43f5b1c8a1SJohn Marino * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 44f5b1c8a1SJohn Marino * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 45f5b1c8a1SJohn Marino * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 46f5b1c8a1SJohn Marino * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 47f5b1c8a1SJohn Marino * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 48f5b1c8a1SJohn Marino * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 49f5b1c8a1SJohn Marino * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 50f5b1c8a1SJohn Marino * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 51f5b1c8a1SJohn Marino * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 52f5b1c8a1SJohn Marino * OF THE POSSIBILITY OF SUCH DAMAGE. 53f5b1c8a1SJohn Marino * ==================================================================== 54f5b1c8a1SJohn Marino * 55f5b1c8a1SJohn Marino * This product includes cryptographic software written by Eric Young 56f5b1c8a1SJohn Marino * (eay@cryptsoft.com). This product includes software written by Tim 57f5b1c8a1SJohn Marino * Hudson (tjh@cryptsoft.com). 58f5b1c8a1SJohn Marino * 59f5b1c8a1SJohn Marino */ 60f5b1c8a1SJohn Marino 61f5b1c8a1SJohn Marino #ifndef HEADER_PQUEUE_H 62f5b1c8a1SJohn Marino #define HEADER_PQUEUE_H 63f5b1c8a1SJohn Marino 6472c33676SMaxim Ag __BEGIN_HIDDEN_DECLS 6572c33676SMaxim Ag 66f5b1c8a1SJohn Marino typedef struct _pqueue *pqueue; 67f5b1c8a1SJohn Marino 68f5b1c8a1SJohn Marino typedef struct _pitem { 69f5b1c8a1SJohn Marino unsigned char priority[8]; /* 64-bit value in big-endian encoding */ 70f5b1c8a1SJohn Marino void *data; 71f5b1c8a1SJohn Marino struct _pitem *next; 72f5b1c8a1SJohn Marino } pitem; 73f5b1c8a1SJohn Marino 74f5b1c8a1SJohn Marino typedef struct _pitem *piterator; 75f5b1c8a1SJohn Marino 76f5b1c8a1SJohn Marino pitem *pitem_new(unsigned char *prio64be, void *data); 77f5b1c8a1SJohn Marino void pitem_free(pitem *item); 78f5b1c8a1SJohn Marino 79f5b1c8a1SJohn Marino pqueue pqueue_new(void); 80f5b1c8a1SJohn Marino void pqueue_free(pqueue pq); 81f5b1c8a1SJohn Marino 82f5b1c8a1SJohn Marino pitem *pqueue_insert(pqueue pq, pitem *item); 83f5b1c8a1SJohn Marino pitem *pqueue_peek(pqueue pq); 84f5b1c8a1SJohn Marino pitem *pqueue_pop(pqueue pq); 85f5b1c8a1SJohn Marino pitem *pqueue_find(pqueue pq, unsigned char *prio64be); 86f5b1c8a1SJohn Marino pitem *pqueue_iterator(pqueue pq); 87f5b1c8a1SJohn Marino pitem *pqueue_next(piterator *iter); 88f5b1c8a1SJohn Marino 89f5b1c8a1SJohn Marino int pqueue_size(pqueue pq); 90f5b1c8a1SJohn Marino 9172c33676SMaxim Ag __END_HIDDEN_DECLS 9272c33676SMaxim Ag 93f5b1c8a1SJohn Marino #endif /* ! HEADER_PQUEUE_H */ 94