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71 lines
2.0 KiB
71 lines
2.0 KiB
#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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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 v8::Persistent<v8::Promise::Resolver> persistent;
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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), {0, 0});
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v8::Local<v8::Promise::Resolver> local =
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v8::Local<v8::Promise::Resolver>::New(isolate, persistent);
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local->Resolve(v8::Undefined(isolate));
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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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if (persistent.IsEmpty()) {
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persistent.Reset(isolate, v8::Promise::Resolver::New(isolate));
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uv_work_t* req = new uv_work_t;
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uv_queue_work(uv_default_loop(), req, [](uv_work_t*) {}, Callback);
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}
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v8::Local<v8::Promise::Resolver> local =
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v8::Local<v8::Promise::Resolver>::New(isolate, persistent);
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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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} // namespace
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NODE_MODULE(binding, Initialize)
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