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3a515b92
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cagy
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/*********************************************************************
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* NAN - Native Abstractions for Node.js
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*
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* Copyright (c) 2018 NAN contributors
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*
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* MIT License <https://github.com/nodejs/nan/blob/master/LICENSE.md>
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********************************************************************/
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#ifndef NAN_WEAK_H_
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#define NAN_WEAK_H_
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static const int kInternalFieldsInWeakCallback = 2;
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static const int kNoInternalFieldIndex = -1;
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#if defined(V8_MAJOR_VERSION) && (V8_MAJOR_VERSION > 4 || \
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(V8_MAJOR_VERSION == 4 && defined(V8_MINOR_VERSION) && V8_MINOR_VERSION >= 3))
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# define NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_ \
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v8::WeakCallbackInfo<WeakCallbackInfo<T> > const&
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# define NAN_WEAK_TWOFIELD_CALLBACK_DATA_TYPE_ \
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NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_
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# define NAN_WEAK_PARAMETER_CALLBACK_SIG_ NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_
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# define NAN_WEAK_TWOFIELD_CALLBACK_SIG_ NAN_WEAK_TWOFIELD_CALLBACK_DATA_TYPE_
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#elif NODE_MODULE_VERSION > IOJS_1_1_MODULE_VERSION
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# define NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_ \
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v8::PhantomCallbackData<WeakCallbackInfo<T> > const&
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# define NAN_WEAK_TWOFIELD_CALLBACK_DATA_TYPE_ \
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NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_
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# define NAN_WEAK_PARAMETER_CALLBACK_SIG_ NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_
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# define NAN_WEAK_TWOFIELD_CALLBACK_SIG_ NAN_WEAK_TWOFIELD_CALLBACK_DATA_TYPE_
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#elif NODE_MODULE_VERSION > NODE_0_12_MODULE_VERSION
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# define NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_ \
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v8::PhantomCallbackData<WeakCallbackInfo<T> > const&
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# define NAN_WEAK_TWOFIELD_CALLBACK_DATA_TYPE_ \
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v8::InternalFieldsCallbackData<WeakCallbackInfo<T>, void> const&
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# define NAN_WEAK_PARAMETER_CALLBACK_SIG_ NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_
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# define NAN_WEAK_TWOFIELD_CALLBACK_SIG_ NAN_WEAK_TWOFIELD_CALLBACK_DATA_TYPE_
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#elif NODE_MODULE_VERSION > NODE_0_10_MODULE_VERSION
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# define NAN_WEAK_CALLBACK_DATA_TYPE_ \
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v8::WeakCallbackData<S, WeakCallbackInfo<T> > const&
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# define NAN_WEAK_CALLBACK_SIG_ NAN_WEAK_CALLBACK_DATA_TYPE_
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#else
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# define NAN_WEAK_CALLBACK_DATA_TYPE_ void *
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# define NAN_WEAK_CALLBACK_SIG_ \
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v8::Persistent<v8::Value>, NAN_WEAK_CALLBACK_DATA_TYPE_
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#endif
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template<typename T>
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class WeakCallbackInfo {
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public:
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typedef void (*Callback)(const WeakCallbackInfo<T>& data);
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WeakCallbackInfo(
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Persistent<v8::Value> *persistent
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, Callback callback
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, void *parameter
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, void *field1 = 0
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, void *field2 = 0) :
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callback_(callback), isolate_(0), parameter_(parameter) {
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std::memcpy(&persistent_, persistent, sizeof (v8::Persistent<v8::Value>));
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internal_fields_[0] = field1;
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internal_fields_[1] = field2;
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}
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inline v8::Isolate *GetIsolate() const { return isolate_; }
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inline T *GetParameter() const { return static_cast<T*>(parameter_); }
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inline void *GetInternalField(int index) const {
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assert((index == 0 || index == 1) && "internal field index out of bounds");
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if (index == 0) {
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return internal_fields_[0];
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} else {
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return internal_fields_[1];
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}
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}
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private:
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NAN_DISALLOW_ASSIGN_COPY_MOVE(WeakCallbackInfo)
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Callback callback_;
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v8::Isolate *isolate_;
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void *parameter_;
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void *internal_fields_[kInternalFieldsInWeakCallback];
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v8::Persistent<v8::Value> persistent_;
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template<typename S, typename M> friend class Persistent;
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template<typename S> friend class PersistentBase;
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#if NODE_MODULE_VERSION <= NODE_0_12_MODULE_VERSION
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# if NODE_MODULE_VERSION > NODE_0_10_MODULE_VERSION
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template<typename S>
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static void invoke(NAN_WEAK_CALLBACK_SIG_ data);
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template<typename S>
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static WeakCallbackInfo *unwrap(NAN_WEAK_CALLBACK_DATA_TYPE_ data);
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# else
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static void invoke(NAN_WEAK_CALLBACK_SIG_ data);
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static WeakCallbackInfo *unwrap(NAN_WEAK_CALLBACK_DATA_TYPE_ data);
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# endif
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#else
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# if defined(V8_MAJOR_VERSION) && (V8_MAJOR_VERSION > 4 || \
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(V8_MAJOR_VERSION == 4 && defined(V8_MINOR_VERSION) && V8_MINOR_VERSION >= 3))
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template<bool isFirstPass>
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static void invokeparameter(NAN_WEAK_PARAMETER_CALLBACK_SIG_ data);
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template<bool isFirstPass>
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static void invoketwofield(NAN_WEAK_TWOFIELD_CALLBACK_SIG_ data);
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# else
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static void invokeparameter(NAN_WEAK_PARAMETER_CALLBACK_SIG_ data);
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static void invoketwofield(NAN_WEAK_TWOFIELD_CALLBACK_SIG_ data);
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# endif
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static WeakCallbackInfo *unwrapparameter(
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NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_ data);
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static WeakCallbackInfo *unwraptwofield(
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NAN_WEAK_TWOFIELD_CALLBACK_DATA_TYPE_ data);
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#endif
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};
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#if defined(V8_MAJOR_VERSION) && (V8_MAJOR_VERSION > 4 || \
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(V8_MAJOR_VERSION == 4 && defined(V8_MINOR_VERSION) && V8_MINOR_VERSION >= 3))
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template<typename T>
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template<bool isFirstPass>
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void
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WeakCallbackInfo<T>::invokeparameter(NAN_WEAK_PARAMETER_CALLBACK_SIG_ data) {
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WeakCallbackInfo<T> *cbinfo = unwrapparameter(data);
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if (isFirstPass) {
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cbinfo->persistent_.Reset();
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data.SetSecondPassCallback(invokeparameter<false>);
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} else {
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cbinfo->callback_(*cbinfo);
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delete cbinfo;
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}
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}
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template<typename T>
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template<bool isFirstPass>
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void
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WeakCallbackInfo<T>::invoketwofield(NAN_WEAK_TWOFIELD_CALLBACK_SIG_ data) {
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WeakCallbackInfo<T> *cbinfo = unwraptwofield(data);
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if (isFirstPass) {
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cbinfo->persistent_.Reset();
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data.SetSecondPassCallback(invoketwofield<false>);
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} else {
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cbinfo->callback_(*cbinfo);
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delete cbinfo;
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}
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}
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template<typename T>
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WeakCallbackInfo<T> *WeakCallbackInfo<T>::unwrapparameter(
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NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_ data) {
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WeakCallbackInfo<T> *cbinfo =
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static_cast<WeakCallbackInfo<T>*>(data.GetParameter());
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cbinfo->isolate_ = data.GetIsolate();
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return cbinfo;
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}
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template<typename T>
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WeakCallbackInfo<T> *WeakCallbackInfo<T>::unwraptwofield(
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NAN_WEAK_TWOFIELD_CALLBACK_DATA_TYPE_ data) {
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WeakCallbackInfo<T> *cbinfo =
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static_cast<WeakCallbackInfo<T>*>(data.GetInternalField(0));
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cbinfo->isolate_ = data.GetIsolate();
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return cbinfo;
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}
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#undef NAN_WEAK_PARAMETER_CALLBACK_SIG_
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#undef NAN_WEAK_TWOFIELD_CALLBACK_SIG_
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#undef NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_
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#undef NAN_WEAK_TWOFIELD_CALLBACK_DATA_TYPE_
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# elif NODE_MODULE_VERSION > NODE_0_12_MODULE_VERSION
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template<typename T>
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void
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WeakCallbackInfo<T>::invokeparameter(NAN_WEAK_PARAMETER_CALLBACK_SIG_ data) {
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WeakCallbackInfo<T> *cbinfo = unwrapparameter(data);
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cbinfo->persistent_.Reset();
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cbinfo->callback_(*cbinfo);
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delete cbinfo;
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}
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template<typename T>
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void
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WeakCallbackInfo<T>::invoketwofield(NAN_WEAK_TWOFIELD_CALLBACK_SIG_ data) {
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WeakCallbackInfo<T> *cbinfo = unwraptwofield(data);
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cbinfo->persistent_.Reset();
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cbinfo->callback_(*cbinfo);
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delete cbinfo;
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}
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template<typename T>
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WeakCallbackInfo<T> *WeakCallbackInfo<T>::unwrapparameter(
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NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_ data) {
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WeakCallbackInfo<T> *cbinfo =
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static_cast<WeakCallbackInfo<T>*>(data.GetParameter());
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cbinfo->isolate_ = data.GetIsolate();
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return cbinfo;
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}
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template<typename T>
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WeakCallbackInfo<T> *WeakCallbackInfo<T>::unwraptwofield(
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NAN_WEAK_TWOFIELD_CALLBACK_DATA_TYPE_ data) {
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WeakCallbackInfo<T> *cbinfo =
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static_cast<WeakCallbackInfo<T>*>(data.GetInternalField1());
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cbinfo->isolate_ = data.GetIsolate();
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return cbinfo;
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}
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#undef NAN_WEAK_PARAMETER_CALLBACK_SIG_
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#undef NAN_WEAK_TWOFIELD_CALLBACK_SIG_
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#undef NAN_WEAK_PARAMETER_CALLBACK_DATA_TYPE_
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#undef NAN_WEAK_TWOFIELD_CALLBACK_DATA_TYPE_
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#elif NODE_MODULE_VERSION > NODE_0_10_MODULE_VERSION
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template<typename T>
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template<typename S>
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void WeakCallbackInfo<T>::invoke(NAN_WEAK_CALLBACK_SIG_ data) {
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WeakCallbackInfo<T> *cbinfo = unwrap(data);
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cbinfo->persistent_.Reset();
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cbinfo->callback_(*cbinfo);
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delete cbinfo;
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}
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template<typename T>
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template<typename S>
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WeakCallbackInfo<T> *WeakCallbackInfo<T>::unwrap(
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NAN_WEAK_CALLBACK_DATA_TYPE_ data) {
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void *parameter = data.GetParameter();
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WeakCallbackInfo<T> *cbinfo =
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static_cast<WeakCallbackInfo<T>*>(parameter);
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cbinfo->isolate_ = data.GetIsolate();
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return cbinfo;
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}
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#undef NAN_WEAK_CALLBACK_SIG_
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#undef NAN_WEAK_CALLBACK_DATA_TYPE_
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#else
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template<typename T>
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void WeakCallbackInfo<T>::invoke(NAN_WEAK_CALLBACK_SIG_ data) {
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WeakCallbackInfo<T> *cbinfo = unwrap(data);
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cbinfo->persistent_.Dispose();
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cbinfo->persistent_.Clear();
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cbinfo->callback_(*cbinfo);
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delete cbinfo;
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}
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| 240 |
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| 241 |
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template<typename T>
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| 242 |
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WeakCallbackInfo<T> *WeakCallbackInfo<T>::unwrap(
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NAN_WEAK_CALLBACK_DATA_TYPE_ data) {
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| 244 |
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WeakCallbackInfo<T> *cbinfo =
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| 245 |
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static_cast<WeakCallbackInfo<T>*>(data);
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| 246 |
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cbinfo->isolate_ = v8::Isolate::GetCurrent();
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| 247 |
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return cbinfo;
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| 248 |
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}
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| 249 |
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#undef NAN_WEAK_CALLBACK_SIG_
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| 251 |
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#undef NAN_WEAK_CALLBACK_DATA_TYPE_
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| 252 |
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#endif
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| 253 |
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| 254 |
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#if defined(V8_MAJOR_VERSION) && (V8_MAJOR_VERSION > 4 || \
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| 255 |
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(V8_MAJOR_VERSION == 4 && defined(V8_MINOR_VERSION) && V8_MINOR_VERSION >= 3))
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| 256 |
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template<typename T, typename M>
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| 257 |
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template<typename P>
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| 258 |
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inline void Persistent<T, M>::SetWeak(
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| 259 |
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P *parameter
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| 260 |
|
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, typename WeakCallbackInfo<P>::Callback callback
|
| 261 |
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, WeakCallbackType type) {
|
| 262 |
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WeakCallbackInfo<P> *wcbd;
|
| 263 |
|
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if (type == WeakCallbackType::kParameter) {
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| 264 |
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wcbd = new WeakCallbackInfo<P>(
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| 265 |
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reinterpret_cast<Persistent<v8::Value>*>(this)
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| 266 |
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, callback
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| 267 |
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, parameter);
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| 268 |
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v8::PersistentBase<T>::SetWeak(
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| 269 |
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wcbd
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| 270 |
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, WeakCallbackInfo<P>::template invokeparameter<true>
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| 271 |
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, type);
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| 272 |
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} else {
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| 273 |
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v8::Local<v8::Value>* self_v(reinterpret_cast<v8::Local<v8::Value>*>(this));
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| 274 |
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assert((*self_v)->IsObject());
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| 275 |
|
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v8::Local<v8::Object> self((*self_v).As<v8::Object>());
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| 276 |
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int count = self->InternalFieldCount();
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| 277 |
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void *internal_fields[kInternalFieldsInWeakCallback] = {0, 0};
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| 278 |
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for (int i = 0; i < count && i < kInternalFieldsInWeakCallback; i++) {
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| 279 |
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internal_fields[i] = self->GetAlignedPointerFromInternalField(i);
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| 280 |
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}
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| 281 |
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wcbd = new WeakCallbackInfo<P>(
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| 282 |
|
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reinterpret_cast<Persistent<v8::Value>*>(this)
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| 283 |
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, callback
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| 284 |
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, 0
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| 285 |
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, internal_fields[0]
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| 286 |
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, internal_fields[1]);
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| 287 |
|
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self->SetAlignedPointerInInternalField(0, wcbd);
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| 288 |
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v8::PersistentBase<T>::SetWeak(
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| 289 |
|
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static_cast<WeakCallbackInfo<P>*>(0)
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| 290 |
|
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, WeakCallbackInfo<P>::template invoketwofield<true>
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| 291 |
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, type);
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| 292 |
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}
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| 293 |
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}
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| 294 |
|
|
#elif NODE_MODULE_VERSION > IOJS_1_1_MODULE_VERSION
|
| 295 |
|
|
template<typename T, typename M>
|
| 296 |
|
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template<typename P>
|
| 297 |
|
|
inline void Persistent<T, M>::SetWeak(
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| 298 |
|
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P *parameter
|
| 299 |
|
|
, typename WeakCallbackInfo<P>::Callback callback
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| 300 |
|
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, WeakCallbackType type) {
|
| 301 |
|
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WeakCallbackInfo<P> *wcbd;
|
| 302 |
|
|
if (type == WeakCallbackType::kParameter) {
|
| 303 |
|
|
wcbd = new WeakCallbackInfo<P>(
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| 304 |
|
|
reinterpret_cast<Persistent<v8::Value>*>(this)
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| 305 |
|
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, callback
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| 306 |
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|
, parameter);
|
| 307 |
|
|
v8::PersistentBase<T>::SetPhantom(
|
| 308 |
|
|
wcbd
|
| 309 |
|
|
, WeakCallbackInfo<P>::invokeparameter);
|
| 310 |
|
|
} else {
|
| 311 |
|
|
v8::Local<v8::Value>* self_v(reinterpret_cast<v8::Local<v8::Value>*>(this));
|
| 312 |
|
|
assert((*self_v)->IsObject());
|
| 313 |
|
|
v8::Local<v8::Object> self((*self_v).As<v8::Object>());
|
| 314 |
|
|
int count = self->InternalFieldCount();
|
| 315 |
|
|
void *internal_fields[kInternalFieldsInWeakCallback] = {0, 0};
|
| 316 |
|
|
for (int i = 0; i < count && i < kInternalFieldsInWeakCallback; i++) {
|
| 317 |
|
|
internal_fields[i] = self->GetAlignedPointerFromInternalField(i);
|
| 318 |
|
|
}
|
| 319 |
|
|
wcbd = new WeakCallbackInfo<P>(
|
| 320 |
|
|
reinterpret_cast<Persistent<v8::Value>*>(this)
|
| 321 |
|
|
, callback
|
| 322 |
|
|
, 0
|
| 323 |
|
|
, internal_fields[0]
|
| 324 |
|
|
, internal_fields[1]);
|
| 325 |
|
|
self->SetAlignedPointerInInternalField(0, wcbd);
|
| 326 |
|
|
v8::PersistentBase<T>::SetPhantom(
|
| 327 |
|
|
static_cast<WeakCallbackInfo<P>*>(0)
|
| 328 |
|
|
, WeakCallbackInfo<P>::invoketwofield
|
| 329 |
|
|
, 0
|
| 330 |
|
|
, count > 1 ? 1 : kNoInternalFieldIndex);
|
| 331 |
|
|
}
|
| 332 |
|
|
}
|
| 333 |
|
|
#elif NODE_MODULE_VERSION > NODE_0_12_MODULE_VERSION
|
| 334 |
|
|
template<typename T, typename M>
|
| 335 |
|
|
template<typename P>
|
| 336 |
|
|
inline void Persistent<T, M>::SetWeak(
|
| 337 |
|
|
P *parameter
|
| 338 |
|
|
, typename WeakCallbackInfo<P>::Callback callback
|
| 339 |
|
|
, WeakCallbackType type) {
|
| 340 |
|
|
WeakCallbackInfo<P> *wcbd;
|
| 341 |
|
|
if (type == WeakCallbackType::kParameter) {
|
| 342 |
|
|
wcbd = new WeakCallbackInfo<P>(
|
| 343 |
|
|
reinterpret_cast<Persistent<v8::Value>*>(this)
|
| 344 |
|
|
, callback
|
| 345 |
|
|
, parameter);
|
| 346 |
|
|
v8::PersistentBase<T>::SetPhantom(
|
| 347 |
|
|
wcbd
|
| 348 |
|
|
, WeakCallbackInfo<P>::invokeparameter);
|
| 349 |
|
|
} else {
|
| 350 |
|
|
v8::Local<v8::Value>* self_v(reinterpret_cast<v8::Local<v8::Value>*>(this));
|
| 351 |
|
|
assert((*self_v)->IsObject());
|
| 352 |
|
|
v8::Local<v8::Object> self((*self_v).As<v8::Object>());
|
| 353 |
|
|
int count = self->InternalFieldCount();
|
| 354 |
|
|
void *internal_fields[kInternalFieldsInWeakCallback] = {0, 0};
|
| 355 |
|
|
for (int i = 0; i < count && i < kInternalFieldsInWeakCallback; i++) {
|
| 356 |
|
|
internal_fields[i] = self->GetAlignedPointerFromInternalField(i);
|
| 357 |
|
|
}
|
| 358 |
|
|
wcbd = new WeakCallbackInfo<P>(
|
| 359 |
|
|
reinterpret_cast<Persistent<v8::Value>*>(this)
|
| 360 |
|
|
, callback
|
| 361 |
|
|
, 0
|
| 362 |
|
|
, internal_fields[0]
|
| 363 |
|
|
, internal_fields[1]);
|
| 364 |
|
|
self->SetAlignedPointerInInternalField(0, wcbd);
|
| 365 |
|
|
v8::PersistentBase<T>::SetPhantom(
|
| 366 |
|
|
WeakCallbackInfo<P>::invoketwofield
|
| 367 |
|
|
, 0
|
| 368 |
|
|
, count > 1 ? 1 : kNoInternalFieldIndex);
|
| 369 |
|
|
}
|
| 370 |
|
|
}
|
| 371 |
|
|
#elif NODE_MODULE_VERSION > NODE_0_10_MODULE_VERSION
|
| 372 |
|
|
template<typename T, typename M>
|
| 373 |
|
|
template<typename P>
|
| 374 |
|
|
inline void Persistent<T, M>::SetWeak(
|
| 375 |
|
|
P *parameter
|
| 376 |
|
|
, typename WeakCallbackInfo<P>::Callback callback
|
| 377 |
|
|
, WeakCallbackType type) {
|
| 378 |
|
|
WeakCallbackInfo<P> *wcbd;
|
| 379 |
|
|
if (type == WeakCallbackType::kParameter) {
|
| 380 |
|
|
wcbd = new WeakCallbackInfo<P>(
|
| 381 |
|
|
reinterpret_cast<Persistent<v8::Value>*>(this)
|
| 382 |
|
|
, callback
|
| 383 |
|
|
, parameter);
|
| 384 |
|
|
v8::PersistentBase<T>::SetWeak(wcbd, WeakCallbackInfo<P>::invoke);
|
| 385 |
|
|
} else {
|
| 386 |
|
|
v8::Local<v8::Value>* self_v(reinterpret_cast<v8::Local<v8::Value>*>(this));
|
| 387 |
|
|
assert((*self_v)->IsObject());
|
| 388 |
|
|
v8::Local<v8::Object> self((*self_v).As<v8::Object>());
|
| 389 |
|
|
int count = self->InternalFieldCount();
|
| 390 |
|
|
void *internal_fields[kInternalFieldsInWeakCallback] = {0, 0};
|
| 391 |
|
|
for (int i = 0; i < count && i < kInternalFieldsInWeakCallback; i++) {
|
| 392 |
|
|
internal_fields[i] = self->GetAlignedPointerFromInternalField(i);
|
| 393 |
|
|
}
|
| 394 |
|
|
wcbd = new WeakCallbackInfo<P>(
|
| 395 |
|
|
reinterpret_cast<Persistent<v8::Value>*>(this)
|
| 396 |
|
|
, callback
|
| 397 |
|
|
, 0
|
| 398 |
|
|
, internal_fields[0]
|
| 399 |
|
|
, internal_fields[1]);
|
| 400 |
|
|
v8::PersistentBase<T>::SetWeak(wcbd, WeakCallbackInfo<P>::invoke);
|
| 401 |
|
|
}
|
| 402 |
|
|
}
|
| 403 |
|
|
#else
|
| 404 |
|
|
template<typename T>
|
| 405 |
|
|
template<typename P>
|
| 406 |
|
|
inline void PersistentBase<T>::SetWeak(
|
| 407 |
|
|
P *parameter
|
| 408 |
|
|
, typename WeakCallbackInfo<P>::Callback callback
|
| 409 |
|
|
, WeakCallbackType type) {
|
| 410 |
|
|
WeakCallbackInfo<P> *wcbd;
|
| 411 |
|
|
if (type == WeakCallbackType::kParameter) {
|
| 412 |
|
|
wcbd = new WeakCallbackInfo<P>(
|
| 413 |
|
|
reinterpret_cast<Persistent<v8::Value>*>(this)
|
| 414 |
|
|
, callback
|
| 415 |
|
|
, parameter);
|
| 416 |
|
|
persistent.MakeWeak(wcbd, WeakCallbackInfo<P>::invoke);
|
| 417 |
|
|
} else {
|
| 418 |
|
|
v8::Local<v8::Value>* self_v(reinterpret_cast<v8::Local<v8::Value>*>(this));
|
| 419 |
|
|
assert((*self_v)->IsObject());
|
| 420 |
|
|
v8::Local<v8::Object> self((*self_v).As<v8::Object>());
|
| 421 |
|
|
int count = self->InternalFieldCount();
|
| 422 |
|
|
void *internal_fields[kInternalFieldsInWeakCallback] = {0, 0};
|
| 423 |
|
|
for (int i = 0; i < count && i < kInternalFieldsInWeakCallback; i++) {
|
| 424 |
|
|
internal_fields[i] = self->GetPointerFromInternalField(i);
|
| 425 |
|
|
}
|
| 426 |
|
|
wcbd = new WeakCallbackInfo<P>(
|
| 427 |
|
|
reinterpret_cast<Persistent<v8::Value>*>(this)
|
| 428 |
|
|
, callback
|
| 429 |
|
|
, 0
|
| 430 |
|
|
, internal_fields[0]
|
| 431 |
|
|
, internal_fields[1]);
|
| 432 |
|
|
persistent.MakeWeak(wcbd, WeakCallbackInfo<P>::invoke);
|
| 433 |
|
|
}
|
| 434 |
|
|
}
|
| 435 |
|
|
#endif
|
| 436 |
|
|
|
| 437 |
|
|
#endif // NAN_WEAK_H_
|