I've spent the last couple of weeks with this; https://groups.google.com/forum/#!topic/v8-users/L8rq6zbviHg
And eventually found the same conclusion. (Node, chromium, all implement their own platforms) The last post has a very hacky proxy platform implementation which works around it. https://github.com/SoylentGraham/V8InspectorMinimal/blob/master/src/TV8Platform.h It would be nice if the wiki made a note about this. Or if the core implementation had a similar workaround, as it's pretty much the only thing that stops CDT from working from a stock v8 implementation. On Monday, 17 September 2018 06:53:34 UTC+1, Dan Pike wrote: > > Hi Yang, > > > > That would explain it! > > > > I hadn’t realised that I needed to implement the platform, too. It was > probably something that I read somewhere and then quickly forgot about. :( > > > > Many thanks, > > > > Dan > > > > *From:* v8-...@googlegroups.com <javascript:> <v8-...@googlegroups.com > <javascript:>> *On Behalf Of *Yang Guo > *Sent:* 17 September 2018 06:18 > *To:* v8-...@googlegroups.com <javascript:> > *Subject:* Re: [v8-dev] Assertion from V8 inspector logic because it's > trying to use unimplemented code > > > > Hi Dan, > > > > the reason non-zero delays are not implemented is because this is just the > default task runner used in V8 for for testing purposes. You are supposed > to implement your own v8::Platform class, that returns your own > implementation of v8::TaskRunner through > v8::Platform::GetForegroundTaskRunner. > > > > I hope this helps. > > > > Cheers, > > > > Yang > > > > On Sun, Sep 16, 2018 at 5:24 PM Dan Pike <oga...@gmail.com <javascript:>> > wrote: > > I have just started to use the V8 inspector and I am getting an assertion > from V8 when I try to debug my code using the console of Chrome DevTools > running on Windows. To me, it seems that the V8 inspector is trying to use > a timeout of 500ms on a delayed task call that then gets passed in to some > code that says "no one uses a non-zero timeout, so we don't need to > implement it". :) > > > > I imagine that I need to set some flag or other while building my > inspector client/channel, but I'm not sure where to look, so I would > appreciate some pointers, please. > > > > I attach a couple of screenshots that show the stack trace, the code that > is triggering the "UNIMPLEMENTED" assertion and the source of the no-zero > timeout. The full stack trace is: > > > > 00000000() Unknown > [Frames below may be incorrect and/or missing] Unknown > v8_libbase.dll!v8::base::OS::Abort() Line 903 C++ > v8_libbase.dll!V8_Fatal(const char * file, int line, const char * > format, ...) Line 172 C++ > > v8_libplatform.dll!v8::platform::DefaultWorkerThreadsTaskRunner:: > PostDelayedTask(std::unique_ptr<v8::Task,std::default_delete<v8::Task> > > task, double delay_in_seconds) Line 50 C++ > v8_libplatform.dll!v8::platform::DefaultPlatform:: > CallDelayedOnWorkerThread(std::unique_ptr<v8::Task,std::default_delete<v8 > ::Task> > task, double delay_in_seconds) Line 203 C++ > v8.dll!v8_inspector::V8InspectorImpl::EvaluateScope::setTimeout(double > timeout) Line 434 C++ > v8.dll!v8_inspector::V8DebuggerAgentImpl::evaluateOnCallFrame(const > v8_inspector::String16 & callFrameId, const v8_inspector::String16 & > expression, v8_inspector::protocol::Maybe<v8_inspector::String16> > objectGroup, v8_inspector::protocol::Maybe<bool> includeCommandLineAPI, > v8_inspector::protocol::Maybe<bool> silent, v8_inspector::protocol::Maybe > <bool> returnByValue, v8_inspector::protocol::Maybe<bool> generatePreview, > v8_inspector::protocol::Maybe<bool> throwOnSideEffect, v8_inspector:: > protocol::Maybe<double> timeout, std::unique_ptr<v8_inspector::protocol:: > Runtime::RemoteObject,std::default_delete<v8_inspector::protocol::Runtime > ::RemoteObject> > * result, v8_inspector::protocol::Maybe<v8_inspector:: > protocol::Runtime::ExceptionDetails> * exceptionDetails) Line 1082 C++ > v8.dll!v8_inspector::protocol::Debugger::DispatcherImpl:: > evaluateOnCallFrame(int callId, const v8_inspector::String16 & method, > const v8_inspector::String16 & message, std::unique_ptr<v8_inspector:: > protocol::DictionaryValue,std::default_delete<v8_inspector::protocol:: > DictionaryValue> > requestMessageObject, v8_inspector::protocol:: > ErrorSupport * errors) Line 1052 C++ > v8.dll!v8_inspector::protocol::Debugger::DispatcherImpl::dispatch(int > callId, const v8_inspector::String16 & method, const v8_inspector:: > String16 & message, std::unique_ptr<v8_inspector::protocol:: > DictionaryValue,std::default_delete<v8_inspector::protocol:: > DictionaryValue> > messageObject) Line 920 C++ > v8.dll!v8_inspector::protocol::UberDispatcher::dispatch(int callId, > const v8_inspector::String16 & method, std::unique_ptr<v8_inspector:: > protocol::Value,std::default_delete<v8_inspector::protocol::Value> > > parsedMessage, const v8_inspector::String16 & rawMessage) Line 816 C++ > v8.dll!v8_inspector::V8InspectorSessionImpl::dispatchProtocolMessage( > const v8_inspector::StringView & message) Line 329 C++ > > > Many thanks, > > > > Dan > > -- > -- > v8-dev mailing list > v8-...@googlegroups.com <javascript:> > http://groups.google.com/group/v8-dev > --- > You received this message because you are subscribed to the Google Groups > "v8-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to v8-dev+un...@googlegroups.com <javascript:>. > For more options, visit https://groups.google.com/d/optout. > > -- > -- > v8-dev mailing list > v8-...@googlegroups.com <javascript:> > http://groups.google.com/group/v8-dev > --- > You received this message because you are subscribed to a topic in the > Google Groups "v8-dev" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/v8-dev/bMjbMGXVrME/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > v8-dev+un...@googlegroups.com <javascript:>. > For more options, visit https://groups.google.com/d/optout. > -- -- v8-dev mailing list v8-dev@googlegroups.com http://groups.google.com/group/v8-dev --- You received this message because you are subscribed to the Google Groups "v8-dev" group. 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