void nativeDataInstanceDtor(ObjectData* obj, const Class* cls) {
assert(!cls->preClass()->builtinObjSize());
assert(!cls->preClass()->builtinODOffset());
obj->~ObjectData();
auto const nProps = size_t{cls->numDeclProperties()};
auto prop = reinterpret_cast<TypedValue*>(obj + 1);
auto const stop = prop + nProps;
for (; prop != stop; ++prop) {
tvRefcountedDecRef(prop);
}
auto ndi = cls->getNativeDataInfo();
if (ndi->destroy) {
ndi->destroy(obj);
}
auto node = getSweepNode(obj, ndi);
if (ndi->sweep) {
MM().removeNativeObject(node);
}
size_t size = ObjectData::sizeForNProps(nProps) + ndsize(ndi);
if (LIKELY(size <= kMaxSmartSize)) {
return MM().smartFreeSizeLogged(node, size);
}
MM().smartFreeSizeBigLogged(node, size);
}
/* Classes with NativeData structs allocate extra memory prior
* to the ObjectData.
*
* [padding][NativeData][SweepNode][ObjectData](prop0)...(propN)
* /\
* ObjectData* points here
*
* padding is added by alignTypedValue() to ensure that ObjectData*
* falls on a memory alignment boundary
* NativeData is info.sz bytes for the custom class Native Data
* SweepNode is a link in the NativeData sweep list for this ND block
*/
ObjectData* nativeDataInstanceCtor(Class* cls) {
Attr attrs = cls->attrs();
if (UNLIKELY(attrs &
(AttrAbstract | AttrInterface | AttrTrait | AttrEnum))) {
ObjectData::raiseAbstractClassError(cls);
}
auto ndi = cls->getNativeDataInfo();
size_t nativeDataSize = alignTypedValue(ndi->sz + sizeof(SweepNode));
size_t nProps = cls->numDeclProperties();
size_t size = ObjectData::sizeForNProps(nProps) + nativeDataSize;
void *ptr = MM().objMallocLogged(size);
auto obj = new (static_cast<char*>(ptr) + nativeDataSize) ObjectData(cls);
obj->setAttribute(static_cast<ObjectData::Attribute>(ndi->odattrs));
if (ndi->init) {
ndi->init(obj);
}
if (ndi->sweep) {
prependSweepNode(getSweepNode(obj));
}
if (UNLIKELY(cls->callsCustomInstanceInit())) {
obj->callCustomInstanceInit();
}
return obj;
}
DEBUG_ONLY
static bool invalidateNativeData(ObjectData* obj, const NativeDataInfo* ndi) {
memset(getSweepNode(obj, ndi), kSmartFreeFill, ndsize(ndi));
return true;
}
