class RawOperationDescriptor;
class CallHandlerHelper;
class EscapableHandleScope;
-template<typename T> class ReturnValue;
namespace internal {
class Arguments;
template<class F> friend class internal::CustomArguments;
friend class HandleScope;
friend class EscapableHandleScope;
- template<class F1, class F2, class F3> friend class PersistentValueMap;
V8_INLINE static Local<T> New(Isolate* isolate, T* that);
};
P* parameter,
typename WeakCallbackData<S, P>::Callback callback);
- template<typename P>
- V8_INLINE P* ClearWeak();
-
- // TODO(dcarney): remove this.
- V8_INLINE void ClearWeak() { ClearWeak<void>(); }
+ V8_INLINE void ClearWeak();
/**
* Marks the reference to this object independent. Garbage collector is free
template<class F> friend class UniquePersistent;
template<class F> friend class PersistentBase;
template<class F> friend class ReturnValue;
- template<class F1, class F2, class F3> friend class PersistentValueMap;
friend class Object;
explicit V8_INLINE PersistentBase(T* val) : val_(val) {}
};
public:
- /**
+ /**
* A UniquePersistent with no storage cell.
*/
V8_INLINE UniquePersistent() : PersistentBase<T>(0) { }
template<class S>
V8_INLINE UniquePersistent& operator=(UniquePersistent<S> rhs) {
TYPE_CHECK(T, S);
- this->Reset();
this->val_ = rhs.val_;
rhs.val_ = 0;
return *this;
};
-typedef uintptr_t PersistentContainerValue;
-static const uintptr_t kPersistentContainerNotFound = 0;
-
-/**
- * A map wrapper that allows using UniquePersistent as a mapped value.
- * C++11 embedders don't need this class, as they can use UniquePersistent
- * directly in std containers.
- *
- * The map relies on a backing map, whose type and accessors are described
- * by the Traits class. The backing map will handle values of type
- * PersistentContainerValue, with all conversion into and out of V8
- * handles being transparently handled by this class.
- */
-template<class K, class V, class Traits>
-class PersistentValueMap {
- public:
- V8_INLINE explicit PersistentValueMap(Isolate* isolate) : isolate_(isolate) {}
-
- V8_INLINE ~PersistentValueMap() { Clear(); }
-
- V8_INLINE Isolate* GetIsolate() { return isolate_; }
-
- /**
- * Return size of the map.
- */
- V8_INLINE size_t Size() { return Traits::Size(&impl_); }
-
- /**
- * Get value stored in map.
- */
- V8_INLINE Local<V> Get(const K& key) {
- return Local<V>::New(isolate_, FromVal(Traits::Get(&impl_, key)));
- }
-
- /**
- * Check whether a value is contained in the map.
- */
- V8_INLINE bool Contains(const K& key) {
- return Traits::Get(&impl_, key) != 0;
- }
-
- /**
- * Get value stored in map and set it in returnValue.
- * Return true if a value was found.
- */
- V8_INLINE bool SetReturnValue(const K& key,
- ReturnValue<Value>& returnValue);
-
- /**
- * Call Isolate::SetReference with the given parent and the map value.
- */
- V8_INLINE void SetReference(const K& key,
- const v8::Persistent<v8::Object>& parent) {
- GetIsolate()->SetReference(
- reinterpret_cast<internal::Object**>(parent.val_),
- reinterpret_cast<internal::Object**>(FromVal(Traits::Get(&impl_, key))));
- }
-
- /**
- * Put value into map. Depending on Traits::kIsWeak, the value will be held
- * by the map strongly or weakly.
- * Returns old value as UniquePersistent.
- */
- UniquePersistent<V> Set(const K& key, Local<V> value) {
- UniquePersistent<V> persistent(isolate_, value);
- return SetUnique(key, &persistent);
- }
-
- /**
- * Put value into map, like Set(const K&, Local<V>).
- */
- UniquePersistent<V> Set(const K& key, UniquePersistent<V> value) {
- return SetUnique(key, &value);
- }
-
- /**
- * Return value for key and remove it from the map.
- */
- V8_INLINE UniquePersistent<V> Remove(const K& key) {
- return Release(Traits::Remove(&impl_, key)).Pass();
- }
-
- /**
- * Traverses the map repeatedly,
- * in case side effects of disposal cause insertions.
- **/
- void Clear();
-
- private:
- PersistentValueMap(PersistentValueMap&);
- void operator=(PersistentValueMap&);
-
- /**
- * Put the value into the map, and set the 'weak' callback when demanded
- * by the Traits class.
- */
- UniquePersistent<V> SetUnique(const K& key, UniquePersistent<V>* persistent) {
- if (Traits::kIsWeak) {
- Local<V> value(Local<V>::New(isolate_, *persistent));
- persistent->template SetWeak<typename Traits::WeakCallbackDataType>(
- Traits::WeakCallbackParameter(&impl_, key, value), WeakCallback);
- }
- PersistentContainerValue old_value =
- Traits::Set(&impl_, key, ClearAndLeak(persistent));
- return Release(old_value).Pass();
- }
-
- static void WeakCallback(
- const WeakCallbackData<V, typename Traits::WeakCallbackDataType>& data);
- V8_INLINE static V* FromVal(PersistentContainerValue v) {
- return reinterpret_cast<V*>(v);
- }
- V8_INLINE static PersistentContainerValue ClearAndLeak(
- UniquePersistent<V>* persistent) {
- V* v = persistent->val_;
- persistent->val_ = 0;
- return reinterpret_cast<PersistentContainerValue>(v);
- }
-
- /**
- * Return a container value as UniquePersistent and make sure the weak
- * callback is properly disposed of. All remove functionality should go
- * through this.
- */
- V8_INLINE static UniquePersistent<V> Release(PersistentContainerValue v) {
- UniquePersistent<V> p;
- p.val_ = FromVal(v);
- if (Traits::kIsWeak && !p.IsEmpty()) {
- Traits::DisposeCallbackData(
- p.template ClearWeak<typename Traits::WeakCallbackDataType>());
- }
- return p.Pass();
- }
-
- Isolate* isolate_;
- typename Traits::Impl impl_;
-};
-
-
/**
* A stack-allocated class that governs a number of local handles.
* After a handle scope has been created, all local handles will be
template<class F> friend class ReturnValue;
template<class F> friend class FunctionCallbackInfo;
template<class F> friend class PropertyCallbackInfo;
- template<class F, class G, class H> friend class PersistentValueMap;
- V8_INLINE void SetInternal(internal::Object* value) { *value_ = value; }
V8_INLINE internal::Object* GetDefaultValue();
V8_INLINE explicit ReturnValue(internal::Object** slot);
internal::Object** value_;
void SetEventLogger(LogEventCallback that);
private:
- template<class K, class V, class Traits> friend class PersistentValueMap;
-
Isolate();
Isolate(const Isolate&);
~Isolate();
static void MakeWeak(internal::Object** global_handle,
void* data,
WeakCallback weak_callback);
- static void* ClearWeak(internal::Object** global_handle);
+ static void ClearWeak(internal::Object** global_handle);
static void Eternalize(Isolate* isolate,
Value* handle,
int* index);
template <class T>
-template<typename P>
-P* PersistentBase<T>::ClearWeak() {
- return reinterpret_cast<P*>(
- V8::ClearWeak(reinterpret_cast<internal::Object**>(this->val_)));
+void PersistentBase<T>::ClearWeak() {
+ V8::ClearWeak(reinterpret_cast<internal::Object**>(this->val_));
}
}
-template <class K, class V, class Traits>
-bool PersistentValueMap<K, V, Traits>::SetReturnValue(const K& key,
- ReturnValue<Value>& returnValue) {
- PersistentContainerValue value = Traits::Get(&impl_, key);
- bool hasValue = value != 0;
- if (hasValue) {
- returnValue.SetInternal(
- *reinterpret_cast<internal::Object**>(FromVal(value)));
- }
- return hasValue;
-}
-
-template <class K, class V, class Traits>
-void PersistentValueMap<K, V, Traits>::Clear() {
- typedef typename Traits::Iterator It;
- HandleScope handle_scope(isolate_);
- // TODO(dcarney): figure out if this swap and loop is necessary.
- while (!Traits::Empty(&impl_)) {
- typename Traits::Impl impl;
- Traits::Swap(impl_, impl);
- for (It i = Traits::Begin(&impl); i != Traits::End(&impl); ++i) {
- Traits::Dispose(isolate_, Release(Traits::Value(i)).Pass(), &impl,
- Traits::Key(i));
- }
- }
-}
-
-
-template <class K, class V, class Traits>
-void PersistentValueMap<K, V, Traits>::WeakCallback(
- const WeakCallbackData<V, typename Traits::WeakCallbackDataType>& data) {
- typename Traits::Impl* impl = Traits::ImplFromWeakCallbackData(data);
- K key = Traits::KeyFromWeakCallbackData(data);
- PersistentContainerValue value = Traits::Remove(impl, key);
- Traits::Dispose(data.GetIsolate(), Release(value).Pass(), impl, key);
-}
-
-
template<typename T>
ReturnValue<T>::ReturnValue(internal::Object** slot) : value_(slot) {}
}
-template<typename K, typename V, bool is_weak>
-class StdPersistentValueMapTraits {
- public:
- static const bool kIsWeak = is_weak;
- typedef v8::PersistentContainerValue VInt;
- typedef std::map<K, VInt> Impl;
- struct WeakCallbackDataType {
- Impl* impl;
- K key;
- };
- typedef typename Impl::iterator Iterator;
- static bool Empty(Impl* impl) { return impl->empty(); }
- static size_t Size(Impl* impl) { return impl->size(); }
- static void Swap(Impl& a, Impl& b) { std::swap(a, b); } // NOLINT
- static Iterator Begin(Impl* impl) { return impl->begin(); }
- static Iterator End(Impl* impl) { return impl->end(); }
- static K Key(Iterator it) { return it->first; }
- static VInt Value(Iterator it) { return it->second; }
- static VInt Set(Impl* impl, K key, VInt value) {
- std::pair<Iterator, bool> res = impl->insert(std::make_pair(key, value));
- VInt old_value = v8::kPersistentContainerNotFound;
- if (!res.second) {
- old_value = res.first->second;
- res.first->second = value;
- }
- return old_value;
- }
- static VInt Get(Impl* impl, K key) {
- Iterator it = impl->find(key);
- if (it == impl->end()) return v8::kPersistentContainerNotFound;
- return it->second;
- }
- static VInt Remove(Impl* impl, K key) {
- Iterator it = impl->find(key);
- if (it == impl->end()) return v8::kPersistentContainerNotFound;
- impl->erase(it);
- return it->second;
- }
- static void Dispose(v8::Isolate* isolate, v8::UniquePersistent<V> value,
- Impl* impl, K key) {}
- static WeakCallbackDataType* WeakCallbackParameter(
- Impl* impl, const K& key, Local<V> value) {
- WeakCallbackDataType* data = new WeakCallbackDataType;
- data->impl = impl;
- data->key = key;
- return data;
- }
- static Impl* ImplFromWeakCallbackData(
- const v8::WeakCallbackData<V, WeakCallbackDataType>& data) {
- return data.GetParameter()->impl;
- }
- static K KeyFromWeakCallbackData(
- const v8::WeakCallbackData<V, WeakCallbackDataType>& data) {
- return data.GetParameter()->key;
- }
- static void DisposeCallbackData(WeakCallbackDataType* data) {
- delete data;
- }
-};
-
-
-template<bool is_weak>
-static void TestPersistentValueMap() {
- LocalContext env;
- v8::Isolate* isolate = env->GetIsolate();
- typedef v8::PersistentValueMap<int, v8::Object,
- StdPersistentValueMapTraits<int, v8::Object, is_weak> > Map;
- Map map(isolate);
- v8::internal::GlobalHandles* global_handles =
- reinterpret_cast<v8::internal::Isolate*>(isolate)->global_handles();
- int initial_handle_count = global_handles->global_handles_count();
- CHECK_EQ(0, static_cast<int>(map.Size()));
- {
- HandleScope scope(isolate);
- Local<v8::Object> obj = map.Get(7);
- CHECK(obj.IsEmpty());
- Local<v8::Object> expected = v8::Object::New(isolate);
- map.Set(7, expected);
- CHECK_EQ(1, static_cast<int>(map.Size()));
- obj = map.Get(7);
- CHECK_EQ(expected, obj);
- v8::UniquePersistent<v8::Object> removed = map.Remove(7);
- CHECK_EQ(0, static_cast<int>(map.Size()));
- CHECK(expected == removed);
- removed = map.Remove(7);
- CHECK(removed.IsEmpty());
- map.Set(8, expected);
- CHECK_EQ(1, static_cast<int>(map.Size()));
- map.Set(8, expected);
- CHECK_EQ(1, static_cast<int>(map.Size()));
- }
- CHECK_EQ(initial_handle_count + 1, global_handles->global_handles_count());
- if (is_weak) {
- reinterpret_cast<v8::internal::Isolate*>(isolate)->heap()->
- CollectAllGarbage(i::Heap::kAbortIncrementalMarkingMask);
- } else {
- map.Clear();
- }
- CHECK_EQ(0, static_cast<int>(map.Size()));
- CHECK_EQ(initial_handle_count, global_handles->global_handles_count());
-}
-
-
-TEST(PersistentValueMap) {
- TestPersistentValueMap<false>();
- TestPersistentValueMap<true>();
-}
-
-
THREADED_TEST(GlobalHandleUpcast) {
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);