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// Copyright Joyent, Inc. and other Node contributors. // // Permission is hereby granted, free of charge, to any person obtaining a // copy of this software and associated documentation files (the // "Software"), to deal in the Software without restriction, including // without limitation the rights to use, copy, modify, merge, publish, // distribute, sublicense, and/or sell copies of the Software, and to permit // persons to whom the Software is furnished to do so, subject to the // following conditions: // // The above copyright notice and this permission notice shall be included // in all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE // USE OR OTHER DEALINGS IN THE SOFTWARE. #include "handle_wrap.h" #include "async_wrap-inl.h" #include "env-inl.h" #include "util-inl.h" #include "node.h" namespace node { using v8::Context; using v8::FunctionCallbackInfo; using v8::FunctionTemplate; using v8::HandleScope; using v8::Local; using v8::Object; using v8::Value; void HandleWrap::Ref(const FunctionCallbackInfo<Value>& args) { HandleWrap* wrap; ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder()); if (IsAlive(wrap)) uv_ref(wrap->GetHandle()); } void HandleWrap::Unref(const FunctionCallbackInfo<Value>& args) { HandleWrap* wrap; ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder()); if (IsAlive(wrap)) uv_unref(wrap->GetHandle()); } void HandleWrap::HasRef(const FunctionCallbackInfo<Value>& args) { HandleWrap* wrap; ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder()); args.GetReturnValue().Set(HasRef(wrap)); } void HandleWrap::Close(const FunctionCallbackInfo<Value>& args) { HandleWrap* wrap; ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder()); wrap->Close(args[0]); } void HandleWrap::Close(Local<Value> close_callback) { if (state_ != kInitialized) return; uv_close(handle_, OnClose); state_ = kClosing; if (!close_callback.IsEmpty() && close_callback->IsFunction() && !persistent().IsEmpty()) { object()->Set(env()->context(), env()->handle_onclose_symbol(), close_callback).Check(); } } void HandleWrap::MakeWeak() { persistent().SetWeak( this, [](const v8::WeakCallbackInfo<HandleWrap>& data) { HandleWrap* handle_wrap = data.GetParameter(); handle_wrap->persistent().Reset(); handle_wrap->Close(); }, v8::WeakCallbackType::kParameter); } void HandleWrap::MarkAsInitialized() { env()->handle_wrap_queue()->PushBack(this); state_ = kInitialized; } void HandleWrap::MarkAsUninitialized() { handle_wrap_queue_.Remove(); state_ = kClosed; } HandleWrap::HandleWrap(Environment* env, Local<Object> object, uv_handle_t* handle, AsyncWrap::ProviderType provider) : AsyncWrap(env, object, provider), state_(kInitialized), handle_(handle) { handle_->data = this; HandleScope scope(env->isolate()); env->handle_wrap_queue()->PushBack(this); } void HandleWrap::OnClose(uv_handle_t* handle) { std::unique_ptr<HandleWrap> wrap { static_cast<HandleWrap*>(handle->data) }; Environment* env = wrap->env(); HandleScope scope(env->isolate()); Context::Scope context_scope(env->context()); CHECK_EQ(wrap->state_, kClosing); wrap->state_ = kClosed; wrap->OnClose(); if (!wrap->persistent().IsEmpty() && wrap->object()->Has(env->context(), env->handle_onclose_symbol()) .FromMaybe(false)) { wrap->MakeCallback(env->handle_onclose_symbol(), 0, nullptr); } } Local<FunctionTemplate> HandleWrap::GetConstructorTemplate(Environment* env) { Local<FunctionTemplate> tmpl = env->handle_wrap_ctor_template(); if (tmpl.IsEmpty()) { tmpl = env->NewFunctionTemplate(nullptr); tmpl->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "HandleWrap")); tmpl->Inherit(AsyncWrap::GetConstructorTemplate(env)); env->SetProtoMethod(tmpl, "close", HandleWrap::Close); env->SetProtoMethodNoSideEffect(tmpl, "hasRef", HandleWrap::HasRef); env->SetProtoMethod(tmpl, "ref", HandleWrap::Ref); env->SetProtoMethod(tmpl, "unref", HandleWrap::Unref); env->set_handle_wrap_ctor_template(tmpl); } return tmpl; } } // namespace node