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This is in preparation for a lint rule forbidding usage of `v8::Persistent`. PR-URL: https://github.com/nodejs/node/pull/31018 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Richard Lau <riclau@uk.ibm.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: David Carlier <devnexen@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: Gus Caplan <me@gus.host> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
78 lines
2.3 KiB
C++
78 lines
2.3 KiB
C++
#include "node.h"
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#include "v8.h"
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#include "uv.h"
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#include <assert.h>
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#include <vector>
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#include <memory>
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namespace {
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void RunInCallbackScope(const v8::FunctionCallbackInfo<v8::Value>& args) {
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v8::Isolate* isolate = args.GetIsolate();
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assert(args.Length() == 4);
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assert(args[0]->IsObject());
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assert(args[1]->IsNumber());
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assert(args[2]->IsNumber());
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assert(args[3]->IsFunction());
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node::async_context asyncContext = {
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args[1].As<v8::Number>()->Value(),
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args[2].As<v8::Number>()->Value()
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};
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node::CallbackScope scope(isolate, args[0].As<v8::Object>(), asyncContext);
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v8::Local<v8::Function> fn = args[3].As<v8::Function>();
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v8::MaybeLocal<v8::Value> ret =
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fn->Call(isolate->GetCurrentContext(), args[0], 0, nullptr);
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if (!ret.IsEmpty())
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args.GetReturnValue().Set(ret.ToLocalChecked());
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}
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static void Callback(uv_work_t* req, int ignored) {
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v8::Isolate* isolate = v8::Isolate::GetCurrent();
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v8::HandleScope scope(isolate);
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node::CallbackScope callback_scope(isolate, v8::Object::New(isolate),
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node::async_context{0, 0});
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std::unique_ptr<v8::Global<v8::Promise::Resolver>> persistent {
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static_cast<v8::Global<v8::Promise::Resolver>*>(req->data) };
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v8::Local<v8::Promise::Resolver> local = persistent->Get(isolate);
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local->Resolve(isolate->GetCurrentContext(),
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v8::Undefined(isolate)).ToChecked();
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delete req;
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}
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static void TestResolveAsync(const v8::FunctionCallbackInfo<v8::Value>& args) {
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v8::Isolate* isolate = args.GetIsolate();
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v8::Global<v8::Promise::Resolver>* persistent =
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new v8::Global<v8::Promise::Resolver>(
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isolate,
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v8::Promise::Resolver::New(
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isolate->GetCurrentContext()).ToLocalChecked());
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uv_work_t* req = new uv_work_t;
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req->data = static_cast<void*>(persistent);
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uv_queue_work(node::GetCurrentEventLoop(isolate),
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req,
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[](uv_work_t*) {},
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Callback);
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v8::Local<v8::Promise::Resolver> local = persistent->Get(isolate);
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args.GetReturnValue().Set(local->GetPromise());
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}
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void Initialize(v8::Local<v8::Object> exports) {
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NODE_SET_METHOD(exports, "runInCallbackScope", RunInCallbackScope);
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NODE_SET_METHOD(exports, "testResolveAsync", TestResolveAsync);
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}
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} // anonymous namespace
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NODE_MODULE(NODE_GYP_MODULE_NAME, Initialize)
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