1f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/* 2f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Copyright © 2008 Intel Corporation 3f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 4f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Permission is hereby granted, free of charge, to any person obtaining a 5f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * copy of this software and associated documentation files (the "Software"), 6f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * to deal in the Software without restriction, including without limitation 7f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * and/or sell copies of the Software, and to permit persons to whom the 9f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Software is furnished to do so, subject to the following conditions: 10f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 11f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * The above copyright notice and this permission notice (including the next 12f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * paragraph) shall be included in all copies or substantial portions of the 13f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Software. 14f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 15f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 21f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * DEALINGS IN THE SOFTWARE. 22f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 23f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 24f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/** 25f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * \file hash_table.c 26f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * \brief Implementation of a generic, opaque hash table data type. 27f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 28f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * \author Ian Romanick <ian.d.romanick@intel.com> 29f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 30f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 31f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "main/imports.h" 32f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "main/simple_list.h" 33f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "hash_table.h" 34f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 35f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstruct node { 36f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct node *next; 37f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct node *prev; 38f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org}; 39f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 40f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstruct hash_table { 41f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org hash_func_t hash; 42f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org hash_compare_func_t compare; 43f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 44f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org unsigned num_buckets; 45f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct node buckets[1]; 46f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org}; 47f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 48f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 49f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstruct hash_node { 50f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct node link; 51f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const void *key; 52f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org void *data; 53f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org}; 54f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 55f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 56f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstruct hash_table * 57f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orghash_table_ctor(unsigned num_buckets, hash_func_t hash, 58f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org hash_compare_func_t compare) 59f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 60f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct hash_table *ht; 61f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org unsigned i; 62f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 63f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 64f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (num_buckets < 16) { 65f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org num_buckets = 16; 66f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 67f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 68f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org ht = malloc(sizeof(*ht) + ((num_buckets - 1) 69f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * sizeof(ht->buckets[0]))); 70f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (ht != NULL) { 71f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org ht->hash = hash; 72f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org ht->compare = compare; 73f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org ht->num_buckets = num_buckets; 74f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 75f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i = 0; i < num_buckets; i++) { 76f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org make_empty_list(& ht->buckets[i]); 77f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 78f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 79f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 80f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return ht; 81f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 82f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 83f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 84f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 85f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orghash_table_dtor(struct hash_table *ht) 86f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 87f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org hash_table_clear(ht); 88f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org free(ht); 89f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 90f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 91f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 92f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 93f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orghash_table_clear(struct hash_table *ht) 94f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 95f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct node *node; 96f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct node *temp; 97f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org unsigned i; 98f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 99f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 100f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i = 0; i < ht->num_buckets; i++) { 101f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org foreach_s(node, temp, & ht->buckets[i]) { 102f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org remove_from_list(node); 103f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org free(node); 104f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 105f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 106f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org assert(is_empty_list(& ht->buckets[i])); 107f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 108f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 109f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 110f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 111f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstatic struct hash_node * 112f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgget_node(struct hash_table *ht, const void *key) 113f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 114f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const unsigned hash_value = (*ht->hash)(key); 115f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const unsigned bucket = hash_value % ht->num_buckets; 116f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct node *node; 117f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 118f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org foreach(node, & ht->buckets[bucket]) { 119f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct hash_node *hn = (struct hash_node *) node; 120f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 121f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if ((*ht->compare)(hn->key, key) == 0) { 122f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return hn; 123f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 124f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 125f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 126f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return NULL; 127f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 128f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 129f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid * 130f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orghash_table_find(struct hash_table *ht, const void *key) 131f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 132f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct hash_node *hn = get_node(ht, key); 133f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 134f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return (hn == NULL) ? NULL : hn->data; 135f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 136f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 137f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 138f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orghash_table_insert(struct hash_table *ht, void *data, const void *key) 139f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 140f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const unsigned hash_value = (*ht->hash)(key); 141f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const unsigned bucket = hash_value % ht->num_buckets; 142f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct hash_node *node; 143f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 144f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org node = calloc(1, sizeof(*node)); 145f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 146f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org node->data = data; 147f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org node->key = key; 148f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 149f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org insert_at_head(& ht->buckets[bucket], & node->link); 150f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 151f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 152f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgbool 153f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orghash_table_replace(struct hash_table *ht, void *data, const void *key) 154f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 155f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const unsigned hash_value = (*ht->hash)(key); 156f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const unsigned bucket = hash_value % ht->num_buckets; 157f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct node *node; 158f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct hash_node *hn; 159f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 160f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org foreach(node, & ht->buckets[bucket]) { 161f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org hn = (struct hash_node *) node; 162f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 163f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if ((*ht->compare)(hn->key, key) == 0) { 164f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org hn->data = data; 165f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return true; 166f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 167f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 168f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 169f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org hn = calloc(1, sizeof(*hn)); 170f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 171f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org hn->data = data; 172f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org hn->key = key; 173f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 174f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org insert_at_head(& ht->buckets[bucket], & hn->link); 175f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return false; 176f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 177f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 178f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 179f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orghash_table_remove(struct hash_table *ht, const void *key) 180f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 181f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct node *node = (struct node *) get_node(ht, key); 182f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (node != NULL) { 183f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org remove_from_list(node); 184f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org free(node); 185f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return; 186f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 187f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 188f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 189f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 190f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orghash_table_call_foreach(struct hash_table *ht, 191f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org void (*callback)(const void *key, 192f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org void *data, 193f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org void *closure), 194f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org void *closure) 195f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 196f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org int bucket; 197f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 198f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (bucket = 0; bucket < ht->num_buckets; bucket++) { 199f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct node *node, *temp; 200f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org foreach_s(node, temp, &ht->buckets[bucket]) { 201f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct hash_node *hn = (struct hash_node *) node; 202f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 203f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org callback(hn->key, hn->data, closure); 204f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 205f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 206f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 207f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 208f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgunsigned 209f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orghash_table_string_hash(const void *key) 210f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 211f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const char *str = (const char *) key; 212f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org unsigned hash = 5381; 213f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 214f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 215f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org while (*str != '\0') { 216f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org hash = (hash * 33) + *str; 217f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org str++; 218f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 219f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 220f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return hash; 221f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 222f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 223f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 224f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgunsigned 225f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orghash_table_pointer_hash(const void *key) 226f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 227f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return (unsigned)((uintptr_t) key / sizeof(void *)); 228f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 229f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 230f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 231f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgint 232f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orghash_table_pointer_compare(const void *key1, const void *key2) 233f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 234f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return key1 == key2 ? 0 : 1; 235f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 236