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 = getNativeNode(obj, ndi);
if (ndi->sweep) {
MM().removeNativeObject(node);
}
size_t size = ObjectData::sizeForNProps(nProps) + ndsize(obj, ndi);
if (LIKELY(size <= kMaxSmallSize)) {
return MM().freeSmallSize(node, size);
}
MM().freeBigSize(node, size);
}
/* Classes with NativeData structs allocate extra memory prior
* to the ObjectData.
*
* [NativeNode][padding][NativeData][ObjectData](prop0)...(propN)
* /\
* ObjectData* points here
*
* padding is added by alignTypedValue(sizeof(NativeData)) to ensure
* that ObjectData* falls on a 16-aligned boundary. NativeData is
* sizeof(NativeData) (NativeDataInfo.sz) bytes for the custom struct.
* NativeNode is a link in the NativeData sweep list for this ND block
*/
ObjectData* nativeDataInstanceCtor(Class* cls) {
HPHP::Attr attrs = cls->attrs();
if (UNLIKELY(attrs &
(AttrAbstract | AttrInterface | AttrTrait | AttrEnum))) {
ObjectData::raiseAbstractClassError(cls);
}
auto ndi = cls->getNativeDataInfo();
size_t nativeDataSize = ndsize(ndi->sz);
size_t nProps = cls->numDeclProperties();
size_t size = ObjectData::sizeForNProps(nProps) + nativeDataSize;
auto node = reinterpret_cast<NativeNode*>(
MM().objMalloc(size)
);
node->obj_offset = nativeDataSize;
node->hdr.kind = HeaderKind::NativeData;
auto obj = new (reinterpret_cast<char*>(node) + nativeDataSize)
ObjectData(cls);
assert(obj->hasExactlyOneRef());
obj->setAttribute(static_cast<ObjectData::Attribute>(ndi->odattrs));
if (ndi->init) {
ndi->init(obj);
}
if (ndi->sweep) {
MM().addNativeObject(node);
}
if (UNLIKELY(cls->needsInitThrowable())) {
obj->callCustomInstanceInit();
}
return obj;
}
size_t ndsize(const ObjectData* obj, const NativeDataInfo* ndi) {
auto cls = obj->getVMClass();
if (cls == Generator::getClass() || cls == AsyncGenerator::getClass()) {
return (cls == Generator::getClass())
? Native::data<Generator>(obj)->resumable()->size()
- sizeof(ObjectData)
: Native::data<AsyncGenerator>(obj)->resumable()->size()
- sizeof(ObjectData);
}
return ndsize(ndi->sz);
}
void sweepNativeData(std::vector<NativeNode*>& natives) {
while (!natives.empty()) {
assert(natives.back()->sweep_index == natives.size() - 1);
auto node = natives.back();
natives.pop_back();
auto obj = Native::obj(node);
auto ndi = obj->getVMClass()->getNativeDataInfo();
assert(ndi->sweep);
assert(node->obj_offset == ndsize(ndi));
ndi->sweep(obj);
assert(invalidateNativeData(obj, ndi));
}
}
/* Classes with NativeData structs allocate extra memory prior
* to the ObjectData.
*
* [NativeNode][padding][NativeData][ObjectData](prop0)...(propN)
* /\
* ObjectData* points here
*
* padding is added by alignTypedValue(sizeof(NativeData)) to ensure
* that ObjectData* falls on a 16-aligned boundary. NativeData is
* sizeof(NativeData) (NativeDataInfo.sz) bytes for the custom struct.
* NativeNode is a link in the NativeData sweep list for this ND block
*/
ObjectData* nativeDataInstanceCtor(Class* cls) {
auto ndi = cls->getNativeDataInfo();
size_t nativeDataSize = ndsize(ndi->sz);
size_t nProps = cls->numDeclProperties();
size_t size = ObjectData::sizeForNProps(nProps) + nativeDataSize;
auto node = reinterpret_cast<NativeNode*>(
MM().objMalloc(size)
);
node->obj_offset = nativeDataSize;
node->hdr.kind = HeaderKind::NativeData;
auto obj = new (reinterpret_cast<char*>(node) + nativeDataSize)
ObjectData(cls);
assert(obj->hasExactlyOneRef());
obj->setAttribute(static_cast<ObjectData::Attribute>(ndi->odattrs));
if (ndi->init) {
ndi->init(obj);
}
if (ndi->sweep) {
MM().addNativeObject(node);
}
return obj;
}
DEBUG_ONLY
static bool invalidateNativeData(ObjectData* obj, const NativeDataInfo* ndi) {
memset(getSweepNode(obj, ndi), kSmartFreeFill, ndsize(ndi));
return true;
}
inline NativeNode* getSweepNode(ObjectData *obj, const NativeDataInfo* ndi) {
return reinterpret_cast<NativeNode*>(
reinterpret_cast<char*>(obj) - ndsize(ndi)
);
}