เมื่อ วันพุธที่ 15 มกราคม ค.ศ. 2020 15 นาฬิกา 15 นาที 49 วินาที UTC+7,
Darin Dimitrov เขียนว่า:
>
> I have embedded V8 (7.8.279.19) inside my Android application and tried
> executing a script that compiles a WebAssembly module.
>
> Unfortunately the promise returned by the "WebAssembly.compile" method is
> never completed (neither the "then" or the "catch" methods are invoked).
> The same happens with the "WebAssembly.instantiate" method:
>
> std::unique_ptr<v8::Platform> platform = v8::platform::NewDefaultPlatform
> ();
> v8::V8::InitializePlatform(platform.get());
> v8::V8::Initialize();
>
> v8::Isolate::CreateParams create_params;
> create_params.array_buffer_allocator = v8::ArrayBuffer::Allocator::
> NewDefaultAllocator();
> v8::Isolate* isolate = v8::Isolate::New(create_params);
> v8::Isolate::Scope isolate_scope(isolate);
> v8::HandleScope scope(isolate);
> auto global_template = v8::ObjectTemplate::New(isolate);
> global_template->Set(v8::String::NewFromUtf8(isolate, "log", v8::
> NewStringType::kNormal).ToLocalChecked(), v8::FunctionTemplate::New(
> isolate, [](const v8::FunctionCallbackInfo<v8::Value>& info) {
> v8::Isolate* isolate = info.GetIsolate();
> v8::String::Utf8Value utf(isolate, info[0].As<v8::String>());
> __android_log_print(ANDROID_LOG_DEBUG, "V8Native", "%s",*utf);
> }));
>
> v8::Local<v8::Context> context = v8::Context::New(isolate, nullptr,
> global_template);
> v8::Context::Scope context_scope(context);
> const char* csource = R"(
> let bytes = new Uint8Array([
> 0,97,115,109,1,0,0,0,1,8,2,96,1,127,0,96,0,0,2,8,1,2,106,
> 115,1,95,0,0,3,2,1,1,8,1,1,10,9,1,7,0,65,185,10,16,0,11
> ]);
> log('before the call');
> WebAssembly
> .instantiate(bytes)
> .then(obj => log('success'))
> .catch(err => log('log'));
> )";
> v8::Local<v8::String> source = v8::String::NewFromUtf8(isolate, csource,
> v8::NewStringType::kNormal).ToLocalChecked();
> v8::Local<v8::Script> script = v8::Script::Compile(context, source).
> ToLocalChecked();
> v8::Local<v8::Value> result;
> script->Run(context).ToLocal(&result);
>
>
>
> Do you have any idea what I might be missing here? The same javascript code
> works fine in the desktop browser.
>
>
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