1 /* 2 * pkghash.h 3 * 4 * Copyright (c) 2011-2018 Pacman Development Team <pacman-dev@archlinux.org> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program. If not, see <http://www.gnu.org/licenses/>. 18 */ 19 20 #ifndef ALPM_PKGHASH_H 21 #define ALPM_PKGHASH_H 22 23 #include <stdlib.h> 24 25 #include "alpm.h" 26 #include "alpm_list.h" 27 28 29 /** 30 * @brief A hash table for holding alpm_pkg_t objects. 31 * 32 * A combination of a hash table and a list, allowing for fast look-up 33 * by package name but also iteration over the packages. 34 */ 35 struct __alpm_pkghash_t { 36 /** data held by the hash table */ 37 alpm_list_t **hash_table; 38 /** head node of the hash table data in normal list format */ 39 alpm_list_t *list; 40 /** number of buckets in hash table */ 41 unsigned int buckets; 42 /** number of entries in hash table */ 43 unsigned int entries; 44 /** max number of entries before a resize is needed */ 45 unsigned int limit; 46 }; 47 48 typedef struct __alpm_pkghash_t alpm_pkghash_t; 49 50 alpm_pkghash_t *_alpm_pkghash_create(unsigned int size); 51 52 alpm_pkghash_t *_alpm_pkghash_add(alpm_pkghash_t **hash, alpm_pkg_t *pkg); 53 alpm_pkghash_t *_alpm_pkghash_add_sorted(alpm_pkghash_t **hash, alpm_pkg_t *pkg); 54 alpm_pkghash_t *_alpm_pkghash_remove(alpm_pkghash_t *hash, alpm_pkg_t *pkg, alpm_pkg_t **data); 55 56 void _alpm_pkghash_free(alpm_pkghash_t *hash); 57 58 alpm_pkg_t *_alpm_pkghash_find(alpm_pkghash_t *hash, const char *name); 59 60 #endif /* ALPM_PKGHASH_H */ 61