ZEND_API void zend_hash_destroy(HashTable *ht)
{
Bucket *p, *q;
IS_CONSISTENT(ht);
SET_INCONSISTENT(HT_IS_DESTROYING);
p = ht->pListHead;
while (p != NULL) {
q = p;
p = p->pListNext;
if (ht->pDestructor) {
ht->pDestructor(q->pData);
}
if (q->pData != &q->pDataPtr) {
pefree(q->pData, ht->persistent);
}
pefree(q, ht->persistent);
}
if (ht->nTableMask) {
pefree(ht->arBuckets, ht->persistent);
}
SET_INCONSISTENT(HT_DESTROYED);
}
ZEND_API void zend_hash_clean(HashTable *ht)
{
Bucket *p, *q;
IS_CONSISTENT(ht);
SET_INCONSISTENT(HT_CLEANING);
p = ht->pListHead;
while (p != NULL) {
q = p;
p = p->pListNext;
if (ht->pDestructor) {
ht->pDestructor(q->pData);
}
if (q->pData != &q->pDataPtr) {
pefree(q->pData, ht->persistent);
}
pefree(q, ht->persistent);
}
memset(ht->arBuckets, 0, ht->nTableSize*sizeof(Bucket *));
ht->pListHead = NULL;
ht->pListTail = NULL;
ht->nNumOfElements = 0;
ht->nNextFreeElement = 0;
ht->pInternalPointer = NULL;
SET_INCONSISTENT(HT_OK);
}
ZEND_API void _zend_hash_init(HashTable *ht, uint nSize, dtor_func_t pDestructor, zend_bool persistent ZEND_FILE_LINE_DC)
{
uint i = 3;
SET_INCONSISTENT(HT_OK);
if (nSize >= 0x80000000) {
/* prevent overflow */
ht->nTableSize = 0x80000000;
} else {
while ((1U << i) < nSize) {
i++;
}
ht->nTableSize = 1 << i;
}
ht->nTableMask = 0; /* 0 means that ht->arBuckets is uninitialized */
ht->nNumUsed = 0;
ht->nNumOfElements = 0;
ht->nNextFreeElement = 0;
ht->arData = NULL;
ht->arHash = (zend_uint*)&uninitialized_bucket;
ht->pDestructor = pDestructor;
ht->nInternalPointer = INVALID_IDX;
if (persistent) {
ht->u.flags = HASH_FLAG_PERSISTENT | HASH_FLAG_APPLY_PROTECTION;
} else {
ht->u.flags = HASH_FLAG_APPLY_PROTECTION;
}
}
ZEND_API int _zend_hash_init(HashTable *ht, uint nSize, hash_func_t pHashFunction, dtor_func_t pDestructor, zend_bool persistent ZEND_FILE_LINE_DC)
{
uint i = 3;
SET_INCONSISTENT(HT_OK);
if (nSize >= 0x80000000) {
/* prevent overflow */
ht->nTableSize = 0x80000000;
} else {
while ((1U << i) < nSize) {
i++;
}
ht->nTableSize = 1 << i;
}
ht->nTableMask = 0; /* 0 means that ht->arBuckets is uninitialized */
ht->pDestructor = pDestructor;
ht->arBuckets = (Bucket**)&uninitialized_bucket;
ht->pListHead = NULL;
ht->pListTail = NULL;
ht->nNumOfElements = 0;
ht->nNextFreeElement = 0;
ht->pInternalPointer = NULL;
ht->persistent = persistent;
ht->nApplyCount = 0;
ht->bApplyProtection = 1;
return SUCCESS;
}
ZEND_API void zend_hash_graceful_reverse_destroy(HashTable *ht)
{
IS_CONSISTENT(ht);
while (ht->pListTail != NULL) {
zend_hash_bucket_delete(ht, ht->pListTail);
}
if (ht->nTableMask) {
pefree(ht->arBuckets, ht->persistent);
}
SET_INCONSISTENT(HT_DESTROYED);
}
ZEND_API void zend_hash_graceful_destroy(HashTable *ht)
{
Bucket *p;
IS_CONSISTENT(ht);
p = ht->pListHead;
while (p != NULL) {
p = zend_hash_apply_deleter(ht, p);
}
pefree(ht->arBuckets, ht->persistent);
SET_INCONSISTENT(HT_DESTROYED);
}
// hash_func_t参数不再使用,保留仅是接口兼容.
// typedef void (*dtor_func_t)(void *pDest);
ZEND_API int _zend_hash_init(HashTable *ht, uint nSize, hash_func_t pHashFunction, dtor_func_t pDestructor, zend_bool persistent ZEND_FILE_LINE_DC)
{
uint i = 3;
Bucket **tmp;
SET_INCONSISTENT(HT_OK);
if (nSize >= 0x80000000) {
/* prevent overflow */
ht->nTableSize = 0x80000000;
} else {
// round操作
// i有最小值的
while ((1U << i) < nSize) {
i++;
}
ht->nTableSize = 1 << i;
}
ht->nTableMask = ht->nTableSize - 1;
// 通用的元素释放函数
ht->pDestructor = pDestructor;
ht->arBuckets = NULL;
ht->pListHead = NULL;
ht->pListTail = NULL;
ht->nNumOfElements = 0;
ht->nNextFreeElement = 0;
ht->pInternalPointer = NULL;
ht->persistent = persistent;
ht->nApplyCount = 0;
ht->bApplyProtection = 1;
/* Uses ecalloc() so that Bucket* == NULL */
if (persistent) {
tmp = (Bucket **) calloc(ht->nTableSize, sizeof(Bucket *));
if (!tmp) {
return FAILURE;
}
ht->arBuckets = tmp;
} else {
tmp = (Bucket **) ecalloc_rel(ht->nTableSize, sizeof(Bucket *));
if (tmp) {
ht->arBuckets = tmp;
}
}
return SUCCESS;
}
ZEND_API void zend_hash_graceful_reverse_destroy(HashTable *ht)
{
Bucket *p;
IS_CONSISTENT(ht);
p = ht->pListTail;
while (p != NULL) {
zend_hash_apply_deleter(ht, p);
p = ht->pListTail;
}
if (ht->nTableMask) {
pefree(ht->arBuckets, ht->persistent);
}
SET_INCONSISTENT(HT_DESTROYED);
}