void rwlock_rwunlock(rwlock_t* lock){
#ifdef USE_PTHREAD
pthread_rwlock_unlock(lock);
#elif defined USE_ETHREAD
erl_drv_rwlock_rwunlock(*lock);
#endif
}
int
exmpp_ht_store(struct exmpp_hashtable *ht, const char *key, int key_len,
void *value)
{
unsigned int index;
struct exmpp_ht_entry *entry;
if (ht == NULL || ht->entries == NULL)
return (-1);
/* Allocate the new entry. */
entry = driver_alloc(sizeof(*entry));
if (entry == NULL)
return (-1);
if (key_len == -1) {
entry->hash = ht_hash(key);
entry->key = exmpp_strdup(key);
if (entry->key == NULL)
return (-1);
} else {
entry->hash = ht_hash_len(key, key_len);
entry->key = driver_alloc(key_len + 1);
if (entry->key == NULL)
return (-1);
memcpy(entry->key, key, key_len);
entry->key[key_len] = '\0';
}
entry->key_len = key_len;
entry->value = value;
#if defined(USE_RWLOCK)
erl_drv_rwlock_rwlock(ht->lock);
#endif
/* Expand the table is necessary. */
if (++(ht->entries_count) > ht->load_limit) {
/*
* Ignore the return value. If expand fails, we should
* still try cramming just this value into the existing
* table -- we may not have memory for a larger table,
* but one more element may be ok. Next time we insert,
* we'll try expanding again.
*/
ht_expand(ht);
}
/* Wire the new entry. */
index = entry->hash % ht->length;
entry->next = ht->entries[index];
ht->entries[index] = entry;
#if defined(USE_RWLOCK)
erl_drv_rwlock_rwunlock(ht->lock);
#endif
return (0);
}
void
exmpp_ht_destroy(struct exmpp_hashtable *ht)
{
unsigned int i;
struct exmpp_ht_entry *entry, *next;
if (ht == NULL || ht->entries == NULL)
return;
#if defined(USE_RWLOCK)
erl_drv_rwlock_rwlock(ht->lock);
#endif
for (i = 0; i < ht->length; ++i) {
next = ht->entries[i];
while (next != NULL) {
entry = next;
next = next->next;
driver_free(entry->key);
if (ht->free_value != NULL)
ht->free_value(entry->value);
driver_free(entry);
}
}
driver_free(ht->entries);
ht->entries = NULL;
ht->entries_count = 0;
ht->length = 0;
#if defined(USE_RWLOCK)
erl_drv_rwlock_rwunlock(ht->lock);
erl_drv_rwlock_destroy(ht->lock);
#endif
driver_free(ht);
}