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authorStef Walter <stefw@gnome.org>2012-12-06 22:42:02 +0100
committerStef Walter <stefw@gnome.org>2013-01-09 13:49:44 +0100
commit3d503948450d69293a3fdfec096e398fedf714f2 (patch)
tree17b68364a71602b846c5122c8007b86fd51812c2 /p11-kit/hashmap.c
parentc343f355b6abfe65adc696b57b18dc57c834acbc (diff)
Move debug and library code into the common/ subdirectory
Start using p11_ as our internal prefix rather than _p11_. We explicitly export p11_kit_ so this is fine as far as visibility. Move the threading, mutex, and module compat, dict, and array code into the common directory too. Take this opportunity to clean up a bit of internal API as well, since so many lines are being touched internally.
Diffstat (limited to 'p11-kit/hashmap.c')
-rw-r--r--p11-kit/hashmap.c391
1 files changed, 0 insertions, 391 deletions
diff --git a/p11-kit/hashmap.c b/p11-kit/hashmap.c
deleted file mode 100644
index d420221..0000000
--- a/p11-kit/hashmap.c
+++ /dev/null
@@ -1,391 +0,0 @@
-/*
- * Copyright (c) 2004 Stefan Walter
- * Copyright (c) 2011 Collabora Ltd.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above
- * copyright notice, this list of conditions and the
- * following disclaimer.
- * * Redistributions in binary form must reproduce the
- * above copyright notice, this list of conditions and
- * the following disclaimer in the documentation and/or
- * other materials provided with the distribution.
- * * The names of contributors to this software may not be
- * used to endorse or promote products derived from this
- * software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
- * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- */
-
-#include "config.h"
-
-#include "hashmap.h"
-
-#include <sys/types.h>
-
-#include <assert.h>
-#include <stdlib.h>
-#include <string.h>
-
-struct _hashmap {
- hash_hash_func hash_func;
- hash_equal_func equal_func;
- hash_destroy_func key_destroy_func;
- hash_destroy_func value_destroy_func;
-
- struct _hashbucket **buckets;
- unsigned int num_items;
- unsigned int num_buckets;
-};
-
-typedef struct _hashbucket {
- void *key;
- unsigned int hashed;
- void *value;
- struct _hashbucket *next;
-} hashbucket;
-
-static hashbucket *
-next_entry (hashiter *iter)
-{
- hashbucket *bucket = iter->next;
- while (!bucket) {
- if (iter->index >= iter->map->num_buckets)
- return NULL;
- bucket = iter->map->buckets[iter->index++];
- }
- iter->next = bucket->next;
- return bucket;
-}
-
-
-int
-_p11_hash_next (hashiter *iter,
- void **key,
- void **value)
-{
- hashbucket *bucket = next_entry (iter);
- if (bucket == NULL)
- return 0;
- if (key)
- *key = bucket->key;
- if (value)
- *value = bucket->value;
- return 1;
-}
-
-void
-_p11_hash_iterate (hashmap *map,
- hashiter *iter)
-{
- iter->map = map;
- iter->index = 0;
- iter->next = NULL;
-}
-
-static hashbucket **
-lookup_or_create_bucket (hashmap *map,
- const void *key,
- int create)
-{
- hashbucket **bucketp;
- unsigned int hash;
-
- /* Perform the hashing */
- hash = map->hash_func (key);
-
- /* scan linked list */
- for (bucketp = &map->buckets[hash % map->num_buckets];
- *bucketp != NULL; bucketp = &(*bucketp)->next) {
- if((*bucketp)->hashed == hash && map->equal_func ((*bucketp)->key, key))
- break;
- }
-
- if ((*bucketp) != NULL || !create)
- return bucketp;
-
- /* add a new entry for non-NULL val */
- (*bucketp) = calloc (sizeof (hashbucket), 1);
-
- if (*bucketp != NULL) {
- (*bucketp)->key = (void*)key;
- (*bucketp)->hashed = hash;
- map->num_items++;
- }
-
- return bucketp;
-}
-
-void *
-_p11_hash_get (hashmap *map,
- const void *key)
-{
- hashbucket **bucketp;
-
- bucketp = lookup_or_create_bucket (map, key, 0);
- if (bucketp && *bucketp)
- return (void*)((*bucketp)->value);
- else
- return NULL;
-}
-
-int
-_p11_hash_set (hashmap *map,
- void *key,
- void *val)
-{
- hashbucket **bucketp;
- hashiter iter;
- hashbucket *bucket;
- hashbucket **new_buckets;
- unsigned int num_buckets;
-
- bucketp = lookup_or_create_bucket (map, key, 1);
- if(bucketp && *bucketp) {
-
- /* Destroy the previous key */
- if ((*bucketp)->key && (*bucketp)->key != key && map->key_destroy_func)
- map->key_destroy_func ((*bucketp)->key);
-
- /* Destroy the previous value */
- if ((*bucketp)->value && (*bucketp)->value != val && map->value_destroy_func)
- map->value_destroy_func ((*bucketp)->value);
-
- /* replace entry */
- (*bucketp)->key = key;
- (*bucketp)->value = val;
-
- /* check that the collision rate isn't too high */
- if (map->num_items > map->num_buckets) {
- num_buckets = map->num_buckets * 2 + 1;
- new_buckets = (hashbucket **)calloc (sizeof (hashbucket *), num_buckets);
-
- /* Ignore failures, maybe we can expand later */
- if(new_buckets) {
- _p11_hash_iterate (map, &iter);
- while ((bucket = next_entry (&iter)) != NULL) {
- unsigned int i = bucket->hashed % num_buckets;
- bucket->next = new_buckets[i];
- new_buckets[i] = bucket;
- }
-
- free (map->buckets);
- map->buckets = new_buckets;
- map->num_buckets = num_buckets;
- }
- }
-
- return 1;
- }
-
- return 0;
-}
-
-int
-_p11_hash_steal (hashmap *map,
- const void *key,
- void **stolen_key,
- void **stolen_value)
-{
- hashbucket **bucketp;
-
- bucketp = lookup_or_create_bucket (map, key, 0);
- if (bucketp && *bucketp) {
- hashbucket *old = *bucketp;
- *bucketp = (*bucketp)->next;
- --map->num_items;
- if (stolen_key)
- *stolen_key = old->key;
- if (stolen_value)
- *stolen_value = old->value;
- free (old);
- return 1;
- }
-
- return 0;
-
-}
-
-int
-_p11_hash_remove (hashmap *map,
- const void *key)
-{
- void *old_key;
- void *old_value;
-
- if (!_p11_hash_steal (map, key, &old_key, &old_value))
- return 0;
-
- if (map->key_destroy_func)
- map->key_destroy_func (old_key);
- if (map->value_destroy_func)
- map->value_destroy_func (old_value);
- return 1;
-}
-
-void
-_p11_hash_clear (hashmap *map)
-{
- hashbucket *bucket, *next;
- int i;
-
- /* Free all entries in the array */
- for (i = 0; i < map->num_buckets; ++i) {
- bucket = map->buckets[i];
- while (bucket != NULL) {
- next = bucket->next;
- if (map->key_destroy_func)
- map->key_destroy_func (bucket->key);
- if (map->value_destroy_func)
- map->value_destroy_func (bucket->value);
- free (bucket);
- bucket = next;
- }
- }
-
- memset (map->buckets, 0, map->num_buckets * sizeof (hashbucket *));
- map->num_items = 0;
-}
-
-hashmap *
-_p11_hash_create (hash_hash_func hash_func,
- hash_equal_func equal_func,
- hash_destroy_func key_destroy_func,
- hash_destroy_func value_destroy_func)
-{
- hashmap *map;
-
- assert (hash_func);
- assert (equal_func);
-
- map = malloc (sizeof (hashmap));
- if (map) {
- map->hash_func = hash_func;
- map->equal_func = equal_func;
- map->key_destroy_func = key_destroy_func;
- map->value_destroy_func = value_destroy_func;
-
- map->num_buckets = 9;
- map->buckets = (hashbucket **)calloc (sizeof (hashbucket *), map->num_buckets);
- if (!map->buckets) {
- free (map);
- return NULL;
- }
-
- map->num_items = 0;
- }
-
- return map;
-}
-
-void
-_p11_hash_free (hashmap *map)
-{
- hashbucket *bucket;
- hashiter iter;
-
- if (!map)
- return;
-
- _p11_hash_iterate (map, &iter);
- while ((bucket = next_entry (&iter)) != NULL) {
- if (map->key_destroy_func)
- map->key_destroy_func (bucket->key);
- if (map->value_destroy_func)
- map->value_destroy_func (bucket->value);
- free (bucket);
- }
-
- if (map->buckets)
- free (map->buckets);
-
- free (map);
-}
-
-unsigned int
-_p11_hash_size (hashmap *map)
-{
- return map->num_items;
-}
-
-unsigned int
-_p11_hash_string_hash (const void *string)
-{
- const char *p = string;
- unsigned int hash = *p;
-
- if (hash)
- for (p += 1; *p != '\0'; p++)
- hash = (hash << 5) - hash + *p;
-
- return hash;
-}
-
-int
-_p11_hash_string_equal (const void *string_one,
- const void *string_two)
-{
- assert (string_one);
- assert (string_two);
-
- return strcmp (string_one, string_two) == 0;
-}
-
-unsigned int
-_p11_hash_ulongptr_hash (const void *to_ulong)
-{
- assert (to_ulong);
- return (unsigned int)*((unsigned long*)to_ulong);
-}
-
-int
-_p11_hash_ulongptr_equal (const void *ulong_one,
- const void *ulong_two)
-{
- assert (ulong_one);
- assert (ulong_two);
- return *((unsigned long*)ulong_one) == *((unsigned long*)ulong_two);
-}
-
-unsigned int
-_p11_hash_intptr_hash (const void *to_int)
-{
- assert (to_int);
- return (unsigned int)*((int*)to_int);
-}
-
-int
-_p11_hash_intptr_equal (const void *int_one,
- const void *int_two)
-{
- assert (int_one);
- assert (int_two);
- return *((int*)int_one) == *((int*)int_two);
-}
-
-unsigned int
-_p11_hash_direct_hash (const void *ptr)
-{
- return (unsigned int)(size_t)ptr;
-}
-
-int
-_p11_hash_direct_equal (const void *ptr_one,
- const void *ptr_two)
-{
- return ptr_one == ptr_two;
-}