1 2#ifndef SRC_NODE_UTIL_H_ 3#define SRC_NODE_UTIL_H_ 4 5#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS 6#include "base_object.h" 7#include "node_snapshotable.h" 8#include "v8.h" 9 10namespace node { 11namespace util { 12 13class WeakReference : public SnapshotableObject { 14 public: 15 SERIALIZABLE_OBJECT_METHODS() 16 17 SET_OBJECT_ID(util_weak_reference) 18 19 WeakReference(Realm* realm, 20 v8::Local<v8::Object> object, 21 v8::Local<v8::Object> target); 22 static void New(const v8::FunctionCallbackInfo<v8::Value>& args); 23 static void Get(const v8::FunctionCallbackInfo<v8::Value>& args); 24 static void IncRef(const v8::FunctionCallbackInfo<v8::Value>& args); 25 static void DecRef(const v8::FunctionCallbackInfo<v8::Value>& args); 26 27 SET_MEMORY_INFO_NAME(WeakReference) 28 SET_SELF_SIZE(WeakReference) 29 SET_NO_MEMORY_INFO() 30 31 struct InternalFieldInfo : public node::InternalFieldInfoBase { 32 SnapshotIndex target; 33 uint64_t reference_count; 34 }; 35 36 private: 37 WeakReference(Realm* realm, 38 v8::Local<v8::Object> object, 39 v8::Local<v8::Object> target, 40 uint64_t reference_count); 41 v8::Global<v8::Object> target_; 42 uint64_t reference_count_ = 0; 43 44 SnapshotIndex target_index_ = 0; // 0 means target_ is not snapshotted 45}; 46 47} // namespace util 48} // namespace node 49 50#endif // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS 51 52#endif // SRC_NODE_UTIL_H_ 53