static void zend_persist_zval_const(zval *z)
{
zend_uchar flags;
void *new_ptr;
switch (Z_TYPE_P(z)) {
case IS_STRING:
case IS_CONSTANT:
flags = Z_GC_FLAGS_P(z) & ~ (IS_STR_PERSISTENT | IS_STR_INTERNED | IS_STR_PERMANENT);
zend_accel_memdup_interned_string(Z_STR_P(z));
Z_GC_FLAGS_P(z) |= flags;
Z_TYPE_FLAGS_P(z) &= ~(IS_TYPE_REFCOUNTED | IS_TYPE_COPYABLE);
break;
case IS_ARRAY:
new_ptr = zend_shared_alloc_get_xlat_entry(Z_ARR_P(z));
if (new_ptr) {
Z_ARR_P(z) = new_ptr;
Z_TYPE_FLAGS_P(z) = IS_TYPE_IMMUTABLE;
} else {
if (Z_IMMUTABLE_P(z)) {
Z_ARR_P(z) = zend_accel_memdup(Z_ARR_P(z), sizeof(zend_array));
zend_hash_persist_immutable(Z_ARRVAL_P(z));
} else {
GC_REMOVE_FROM_BUFFER(Z_ARR_P(z));
zend_accel_store(Z_ARR_P(z), sizeof(zend_array));
zend_hash_persist(Z_ARRVAL_P(z), zend_persist_zval);
/* make immutable array */
Z_TYPE_FLAGS_P(z) = IS_TYPE_IMMUTABLE;
GC_REFCOUNT(Z_COUNTED_P(z)) = 2;
Z_ARRVAL_P(z)->u.flags &= ~HASH_FLAG_APPLY_PROTECTION;
}
}
break;
case IS_REFERENCE:
new_ptr = zend_shared_alloc_get_xlat_entry(Z_REF_P(z));
if (new_ptr) {
Z_REF_P(z) = new_ptr;
} else {
zend_accel_store(Z_REF_P(z), sizeof(zend_reference));
zend_persist_zval(Z_REFVAL_P(z));
}
break;
case IS_CONSTANT_AST:
new_ptr = zend_shared_alloc_get_xlat_entry(Z_AST_P(z));
if (new_ptr) {
Z_AST_P(z) = new_ptr;
} else {
zend_accel_store(Z_AST_P(z), sizeof(zend_ast_ref));
Z_ASTVAL_P(z) = zend_persist_ast(Z_ASTVAL_P(z));
}
break;
}
}
ZEND_API void ZEND_FASTCALL zend_objects_store_del(zend_object *object) /* {{{ */
{
/* Make sure we hold a reference count during the destructor call
otherwise, when the destructor ends the storage might be freed
when the refcount reaches 0 a second time
*/
if (EG(objects_store).object_buckets &&
IS_OBJ_VALID(EG(objects_store).object_buckets[object->handle])) {
if (GC_REFCOUNT(object) == 0) {
if (!(GC_FLAGS(object) & IS_OBJ_DESTRUCTOR_CALLED)) {
GC_FLAGS(object) |= IS_OBJ_DESTRUCTOR_CALLED;
if (object->handlers->dtor_obj
&& (object->handlers->dtor_obj != zend_objects_destroy_object
|| object->ce->destructor)) {
GC_ADDREF(object);
object->handlers->dtor_obj(object);
GC_DELREF(object);
}
}
if (GC_REFCOUNT(object) == 0) {
uint32_t handle = object->handle;
void *ptr;
EG(objects_store).object_buckets[handle] = SET_OBJ_INVALID(object);
if (!(GC_FLAGS(object) & IS_OBJ_FREE_CALLED)) {
GC_FLAGS(object) |= IS_OBJ_FREE_CALLED;
if (object->handlers->free_obj) {
GC_ADDREF(object);
object->handlers->free_obj(object);
GC_DELREF(object);
}
}
ptr = ((char*)object) - object->handlers->offset;
GC_REMOVE_FROM_BUFFER(object);
efree(ptr);
ZEND_OBJECTS_STORE_ADD_TO_FREE_LIST(handle);
}
} else {
GC_DELREF(object);
}
}
}
ZEND_API void ZEND_FASTCALL zend_objects_store_del(zend_object *object) /* {{{ */
{
ZEND_ASSERT(GC_REFCOUNT(object) == 0);
/* GC might have released this object already. */
if (UNEXPECTED(GC_TYPE(object) == IS_NULL)) {
return;
}
/* Make sure we hold a reference count during the destructor call
otherwise, when the destructor ends the storage might be freed
when the refcount reaches 0 a second time
*/
if (!(OBJ_FLAGS(object) & IS_OBJ_DESTRUCTOR_CALLED)) {
GC_ADD_FLAGS(object, IS_OBJ_DESTRUCTOR_CALLED);
if (object->handlers->dtor_obj != zend_objects_destroy_object
|| object->ce->destructor) {
GC_SET_REFCOUNT(object, 1);
object->handlers->dtor_obj(object);
GC_DELREF(object);
}
}
if (GC_REFCOUNT(object) == 0) {
uint32_t handle = object->handle;
void *ptr;
ZEND_ASSERT(EG(objects_store).object_buckets != NULL);
ZEND_ASSERT(IS_OBJ_VALID(EG(objects_store).object_buckets[handle]));
EG(objects_store).object_buckets[handle] = SET_OBJ_INVALID(object);
if (!(OBJ_FLAGS(object) & IS_OBJ_FREE_CALLED)) {
GC_ADD_FLAGS(object, IS_OBJ_FREE_CALLED);
GC_SET_REFCOUNT(object, 1);
object->handlers->free_obj(object);
}
ptr = ((char*)object) - object->handlers->offset;
GC_REMOVE_FROM_BUFFER(object);
efree(ptr);
ZEND_OBJECTS_STORE_ADD_TO_FREE_LIST(handle);
}
}
static void gc_remove_nested_data_from_buffer(zend_refcounted *ref, gc_root_buffer *root)
{
HashTable *ht = NULL;
Bucket *p, *end;
zval *zv;
tail_call:
if (root ||
(GC_REF_ADDRESS(ref) != 0 &&
GC_REF_CHECK_COLOR(ref, GC_BLACK))) {
GC_TRACE_REF(ref, "removing from buffer");
if (root) {
gc_remove_from_roots(root);
GC_REF_SET_INFO(ref, 0);
root = NULL;
} else {
GC_REMOVE_FROM_BUFFER(ref);
}
if (GC_TYPE(ref) == IS_OBJECT) {
zend_object *obj = (zend_object*)ref;
if (EXPECTED(!(OBJ_FLAGS(ref) & IS_OBJ_FREE_CALLED))) {
int n;
zval *zv, *end;
ht = obj->handlers->get_gc(obj, &zv, &n);
end = zv + n;
if (EXPECTED(!ht)) {
if (!n) return;
while (!Z_REFCOUNTED_P(--end)) {
if (zv == end) return;
}
}
while (zv != end) {
if (Z_REFCOUNTED_P(zv)) {
ref = Z_COUNTED_P(zv);
gc_remove_nested_data_from_buffer(ref, NULL);
}
zv++;
}
if (EXPECTED(!ht)) {
ref = Z_COUNTED_P(zv);
goto tail_call;
}
} else {
return;
}
} else if (GC_TYPE(ref) == IS_ARRAY) {
ht = (zend_array*)ref;
} else if (GC_TYPE(ref) == IS_REFERENCE) {
if (Z_REFCOUNTED(((zend_reference*)ref)->val)) {
ref = Z_COUNTED(((zend_reference*)ref)->val);
goto tail_call;
}
return;
} else {
return;
}
if (!ht->nNumUsed) return;
p = ht->arData;
end = p + ht->nNumUsed;
while (1) {
end--;
zv = &end->val;
if (Z_TYPE_P(zv) == IS_INDIRECT) {
zv = Z_INDIRECT_P(zv);
}
if (Z_REFCOUNTED_P(zv)) {
break;
}
if (p == end) return;
}
while (p != end) {
zv = &p->val;
if (Z_TYPE_P(zv) == IS_INDIRECT) {
zv = Z_INDIRECT_P(zv);
}
if (Z_REFCOUNTED_P(zv)) {
ref = Z_COUNTED_P(zv);
gc_remove_nested_data_from_buffer(ref, NULL);
}
p++;
}
zv = &p->val;
if (Z_TYPE_P(zv) == IS_INDIRECT) {
zv = Z_INDIRECT_P(zv);
}
ref = Z_COUNTED_P(zv);
goto tail_call;
}
}
