| #ifndef SRC_HANDLE_WRAP_H_ |
| #define SRC_HANDLE_WRAP_H_ |
| |
| #include "async-wrap.h" |
| #include "env.h" |
| #include "node.h" |
| #include "queue.h" |
| #include "uv.h" |
| #include "v8.h" |
| |
| namespace node { |
| |
| // Rules: |
| // |
| // - Do not throw from handle methods. Set errno. |
| // |
| // - MakeCallback may only be made directly off the event loop. |
| // That is there can be no JavaScript stack frames underneath it. |
| // (Is there any way to assert that?) |
| // |
| // - No use of v8::WeakReferenceCallback. The close callback signifies that |
| // we're done with a handle - external resources can be freed. |
| // |
| // - Reusable? |
| // |
| // - The uv_close_cb is used to free the c++ object. The close callback |
| // is not made into javascript land. |
| // |
| // - uv_ref, uv_unref counts are managed at this layer to avoid needless |
| // js/c++ boundary crossing. At the javascript layer that should all be |
| // taken care of. |
| |
| class HandleWrap : public AsyncWrap { |
| public: |
| static void Close(const v8::FunctionCallbackInfo<v8::Value>& args); |
| static void Ref(const v8::FunctionCallbackInfo<v8::Value>& args); |
| static void Unref(const v8::FunctionCallbackInfo<v8::Value>& args); |
| |
| static inline bool IsAlive(const HandleWrap* wrap) { |
| return wrap != nullptr && wrap->GetHandle() != nullptr; |
| } |
| |
| inline uv_handle_t* GetHandle() const { return handle__; } |
| |
| protected: |
| HandleWrap(Environment* env, |
| v8::Handle<v8::Object> object, |
| uv_handle_t* handle, |
| AsyncWrap::ProviderType provider, |
| AsyncWrap* parent = nullptr); |
| virtual ~HandleWrap() override; |
| |
| private: |
| friend void GetActiveHandles(const v8::FunctionCallbackInfo<v8::Value>&); |
| static void OnClose(uv_handle_t* handle); |
| QUEUE handle_wrap_queue_; |
| unsigned int flags_; |
| // Using double underscore due to handle_ member in tcp_wrap. Probably |
| // tcp_wrap should rename it's member to 'handle'. |
| uv_handle_t* handle__; |
| |
| static const unsigned int kUnref = 1; |
| static const unsigned int kCloseCallback = 2; |
| }; |
| |
| |
| } // namespace node |
| |
| |
| #endif // SRC_HANDLE_WRAP_H_ |