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Add small bucket support. 

SVN revision: 38168
This commit is contained in:
Cedric BAIL 2008-12-16 16:49:29 +00:00
parent 00b5758937
commit c80a55ee14
2 changed files with 48 additions and 22 deletions
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8
legacy/eina/src/include/eina_hash.h
View File

@ -66,9 +66,11 @@ EAPI int eina_hash_shutdown(void);
EAPI Eina_Hash * eina_hash_new(Eina_Key_Length key_length_cb,
Eina_Key_Cmp key_cmp_cb,
Eina_Key_Hash key_hash_cb,
Eina_Free_Cb data_free_cb);
Eina_Free_Cb data_free_cb,
int buckets_power_size);
EAPI Eina_Hash * eina_hash_string_djb2_new(Eina_Free_Cb data_free_cb);
EAPI Eina_Hash * eina_hash_string_superfast_new(Eina_Free_Cb data_free_cb);
EAPI Eina_Hash * eina_hash_string_small_new(Eina_Free_Cb data_free_cb);
EAPI Eina_Hash * eina_hash_int32_new(Eina_Free_Cb data_free_cb);
EAPI Eina_Hash * eina_hash_int64_new(Eina_Free_Cb data_free_cb);
EAPI Eina_Hash * eina_hash_pointer_new(Eina_Free_Cb data_free_cb);
@ -119,8 +121,8 @@ EAPI int eina_hash_superfast(const char *key, int len);
static inline int eina_hash_djb2(const char *key, int len);
/* Hash function from http://www.concentric.net/~Ttwang/tech/inthash.htm */
static inline int eina_hash_int32(unsigned int *pkey, __UNUSED__ int len);
static inline int eina_hash_int64(unsigned long int *pkey, __UNUSED__ int len);
static inline int eina_hash_int32(unsigned int *pkey, int len);
static inline int eina_hash_int64(unsigned long int *pkey, int len);
#include "eina_inline_hash.x"

62
legacy/eina/src/lib/eina_hash.c
View File

@ -50,8 +50,9 @@
EINA_MAGIC_FAIL(d, EINA_MAGIC_HASH_ITERATOR); \
} while(0)
#define EINA_HASH_BUCKET_SIZE 256
#define EINA_HASH_BUCKET_MASK 0xFF
#define EINA_HASH_BUCKET_SIZE 8
#define EINA_HASH_SMALL_BUCKET_SIZE 5
#define EINA_HASH_RBTREE_MASK 0xFFF
typedef struct _Eina_Hash_Head Eina_Hash_Head;
@ -68,6 +69,9 @@ struct _Eina_Hash
Eina_Free_Cb data_free_cb;
Eina_Rbtree **buckets;
int size;
int mask;
int population;
EINA_MAGIC;
@ -190,13 +194,13 @@ eina_hash_add_alloc_by_hash(Eina_Hash *hash,
error = EINA_ERROR_OUT_OF_MEMORY;
/* Apply eina mask to hash. */
hash_num = key_hash & EINA_HASH_BUCKET_MASK;
hash_num = key_hash & hash->mask;
key_hash &= EINA_HASH_RBTREE_MASK;
if (!hash->buckets)
{
hash->buckets = malloc(sizeof (Eina_Rbtree*) * EINA_HASH_BUCKET_SIZE);
memset(hash->buckets, 0, sizeof (Eina_Rbtree*) * EINA_HASH_BUCKET_SIZE);
hash->buckets = malloc(sizeof (Eina_Rbtree*) * hash->size);
memset(hash->buckets, 0, sizeof (Eina_Rbtree*) * hash->size);
eh = NULL;
}
@ -287,7 +291,7 @@ _eina_hash_find_by_hash(const Eina_Hash *hash, Eina_Hash_Tuple *tuple, int key_h
Eina_Hash_El *el;
int rb_hash = key_hash & EINA_HASH_RBTREE_MASK;
key_hash &= EINA_HASH_BUCKET_MASK;
key_hash &= hash->mask;
if (!hash->buckets) return NULL;
@ -315,7 +319,7 @@ _eina_hash_find_by_data(const Eina_Hash *hash, const void *data, int *key_hash,
each.el = NULL;
each.data = data;
for (hash_num = 0; hash_num < EINA_HASH_BUCKET_SIZE; hash_num++)
for (hash_num = 0; hash_num < hash->size; hash_num++)
{
if (!hash->buckets[hash_num])
continue;
@ -357,7 +361,7 @@ _eina_hash_del_by_hash_el(Eina_Hash *hash, Eina_Hash_El *el, Eina_Hash_Head *eh,
if (!eh->head)
{
key_hash &= EINA_HASH_BUCKET_MASK;
key_hash &= hash->mask;
hash->buckets[key_hash] = eina_rbtree_inline_remove(hash->buckets[key_hash], EINA_RBTREE_GET(eh), EINA_RBTREE_CMP_NODE_CB(_eina_hash_hash_rbtree_cmp_node), NULL);
free(eh);
@ -534,7 +538,7 @@ _eina_hash_iterator_next(Eina_Iterator_Hash *it, void **data)
if (ok == EINA_FALSE)
{
while (bucket < EINA_HASH_BUCKET_SIZE)
while (bucket < it->hash->size)
{
if (it->hash->buckets[bucket] != NULL)
{
@ -549,7 +553,7 @@ _eina_hash_iterator_next(Eina_Iterator_Hash *it, void **data)
if (it->list) eina_iterator_free(it->list);
it->list = eina_rbtree_iterator_prefix(it->eh->head);
ok = eina_iterator_next(it->list, (void**) &it->el);
if (bucket == EINA_HASH_BUCKET_SIZE) ok = EINA_FALSE;
if (bucket == it->hash->size) ok = EINA_FALSE;
}
it->index++;
@ -663,18 +667,19 @@ eina_hash_shutdown(void)
eina_error_shutdown();
return --_eina_hash_init_count;
}
EAPI Eina_Hash *
eina_hash_new(Eina_Key_Length key_length_cb,
Eina_Key_Cmp key_cmp_cb,
Eina_Key_Hash key_hash_cb,
Eina_Free_Cb data_free_cb)
Eina_Free_Cb data_free_cb,
int buckets_power_size)
{
/* FIXME: Use mempool. */
Eina_Hash *new;
eina_error_set(0);
if (!key_length_cb || !key_cmp_cb) return NULL;
if (buckets_power_size < 3 || buckets_power_size > 16) return NULL;
new = malloc(sizeof (Eina_Hash));
if (!new) goto on_error;
@ -686,6 +691,9 @@ eina_hash_new(Eina_Key_Length key_length_cb,
new->buckets = NULL;
new->population = 0;
new->size = 1 << buckets_power_size;
new->mask = new->size - 1;
EINA_MAGIC_SET(new, EINA_MAGIC_HASH);
return new;
@ -701,7 +709,8 @@ eina_hash_string_djb2_new(Eina_Free_Cb data_free_cb)
return eina_hash_new(EINA_KEY_LENGTH(_eina_string_key_length),
EINA_KEY_CMP(_eina_string_key_cmp),
EINA_KEY_HASH(eina_hash_djb2),
data_free_cb);
data_free_cb,
EINA_HASH_BUCKET_SIZE);
}
EAPI Eina_Hash *
@ -710,7 +719,18 @@ eina_hash_string_superfast_new(Eina_Free_Cb data_free_cb)
return eina_hash_new(EINA_KEY_LENGTH(_eina_string_key_length),
EINA_KEY_CMP(_eina_string_key_cmp),
EINA_KEY_HASH(eina_hash_superfast),
data_free_cb);
data_free_cb,
EINA_HASH_BUCKET_SIZE);
}
EAPI Eina_Hash *
eina_hash_string_small_new(Eina_Free_Cb data_free_cb)
{
return eina_hash_new(EINA_KEY_LENGTH(_eina_string_key_length),
EINA_KEY_CMP(_eina_string_key_cmp),
EINA_KEY_HASH(eina_hash_superfast),
data_free_cb,
EINA_HASH_SMALL_BUCKET_SIZE);
}
EAPI Eina_Hash *
@ -719,7 +739,8 @@ eina_hash_int32_new(Eina_Free_Cb data_free_cb)
return eina_hash_new(EINA_KEY_LENGTH(_eina_int32_key_length),
EINA_KEY_CMP(_eina_int32_key_cmp),
EINA_KEY_HASH(eina_hash_int32),
data_free_cb);
data_free_cb,
EINA_HASH_BUCKET_SIZE);
}
EAPI Eina_Hash *
@ -728,7 +749,8 @@ eina_hash_int64_new(Eina_Free_Cb data_free_cb)
return eina_hash_new(EINA_KEY_LENGTH(_eina_int64_key_length),
EINA_KEY_CMP(_eina_int64_key_cmp),
EINA_KEY_HASH(eina_hash_int64),
data_free_cb);
data_free_cb,
EINA_HASH_BUCKET_SIZE);
}
EAPI Eina_Hash *
@ -738,12 +760,14 @@ eina_hash_pointer_new(Eina_Free_Cb data_free_cb)
return eina_hash_new(EINA_KEY_LENGTH(_eina_int64_key_length),
EINA_KEY_CMP(_eina_int64_key_cmp),
EINA_KEY_HASH(eina_hash_int64),
data_free_cb);
data_free_cb,
EINA_HASH_BUCKET_SIZE);
#else
return eina_hash_new(EINA_KEY_LENGTH(_eina_int32_key_length),
EINA_KEY_CMP(_eina_int32_key_cmp),
EINA_KEY_HASH(eina_hash_int32),
data_free_cb);
data_free_cb,
EINA_HASH_BUCKET_SIZE);
#endif
}
@ -787,7 +811,7 @@ eina_hash_free(Eina_Hash *hash)
if (!hash) return;
if (hash->buckets)
for (i = 0; i < EINA_HASH_BUCKET_SIZE; i++)
for (i = 0; i < hash->size; i++)
eina_rbtree_delete(hash->buckets[i], EINA_RBTREE_FREE_CB(_eina_hash_head_free), hash);
free(hash);
}