Hello, I'm also from the NativeScript team... Another case that we found to hang the same way is whenever we handle the ` *Debugger.setBreakpointByUrl*` protocol message, in which case we see the following stack:
v8_inspector::(anonymous namespace)::ActualScript::setBreakpoint(v8_inspector::String16 const&, v8::debug::Location*, int*) const v8-debugger-script.cc:255 v8_inspector::V8DebuggerAgentImpl::setBreakpointImpl(v8_inspector::String16 const&, v8_inspector::String16 const&, v8_inspector::String16 const&, int, int) v8-debugger-agent-impl.cc:953 v8_inspector::V8DebuggerAgentImpl::setBreakpointByUrl(int, v8_crdtp::detail::ValueMaybe<v8_inspector::String16>, v8_crdtp::detail::ValueMaybe<v8_inspector::String16>, v8_crdtp::detail::ValueMaybe<v8_inspector::String16>, v8_crdtp::detail::ValueMaybe<int>, v8_crdtp::detail::ValueMaybe<v8_inspector::String16>, v8_inspector::String16*, std::__Cr::unique_ptr<std::__Cr::vector<std::__Cr::unique_ptr<v8_inspector::protocol::Debugger::Location, std::__Cr::default_delete<v8_inspector::protocol::Debugger::Location> >, std::__Cr::allocator<std::__Cr::unique_ptr<v8_inspector::protocol::Debugger::Location, std::__Cr::default_delete<v8_inspector::protocol::Debugger::Location> > > >, std::__Cr::default_delete<std::__Cr::vector<std::__Cr::unique_ptr<v8_inspector::protocol::Debugger::Location, std::__Cr::default_delete<v8_inspector::protocol::Debugger::Location> >, std::__Cr::allocator<std::__Cr::unique_ptr<v8_inspector::protocol::Debugger::Location, std::__Cr::default_delete<v8_inspector::protocol::Debugger::Location> > > > > >*) v8-debugger-agent-impl.cc:582 v8_inspector::protocol::Debugger::DomainDispatcherImpl::setBreakpointByUrl(v8_crdtp::Dispatchable const&) Debugger.cpp:1333 v8_inspector::protocol::Debugger::DomainDispatcherImpl::Dispatch(v8_crdtp::span<unsigned char>)::$_29::operator()(v8_crdtp::Dispatchable const&) const Debugger.cpp:519 decltype(std::__Cr::forward<v8_inspector::protocol::Debugger::DomainDispatcherImpl::Dispatch(v8_crdtp::span<unsigned char>)::$_29&>(fp)(std::__Cr::forward<v8_crdtp::Dispatchable const&>(fp0))) std::__Cr::__invoke<v8_inspector::protocol::Debugger::DomainDispatcherImpl::Dispatch(v8_crdtp::span<unsigned char>)::$_29&, v8_crdtp::Dispatchable const&>(v8_inspector::protocol::Debugger::DomainDispatcherImpl::Dispatch(v8_crdtp::span<unsigned char>)::$_29&, v8_crdtp::Dispatchable const&) type_traits:3694 void std::__Cr::__invoke_void_return_wrapper<void, true>::__call<v8_inspector::protocol::Debugger::DomainDispatcherImpl::Dispatch(v8_crdtp::span<unsigned char>)::$_29&, v8_crdtp::Dispatchable const&>(v8_inspector::protocol::Debugger::DomainDispatcherImpl::Dispatch(v8_crdtp::span<unsigned char>)::$_29&, v8_crdtp::Dispatchable const&) __functional_base:348 std::__Cr::__function::__default_alloc_func<v8_inspector::protocol::Debugger::DomainDispatcherImpl::Dispatch(v8_crdtp::span<unsigned char>)::$_29, void (v8_crdtp::Dispatchable const&)>::operator()(v8_crdtp::Dispatchable const&) functional:1611 void std::__Cr::__function::__policy_invoker<void (v8_crdtp::Dispatchable const&)>::__call_impl<std::__Cr::__function::__default_alloc_func<v8_inspector::protocol::Debugger::DomainDispatcherImpl::Dispatch(v8_crdtp::span<unsigned char>)::$_29, void (v8_crdtp::Dispatchable const&)> >(std::__Cr::__function::__policy_storage const*, v8_crdtp::Dispatchable const&) functional:2092 void std::__Cr::__function::__policy_invoker<void ()>::__call_impl<std::__Cr::__function::__default_alloc_func<v8_crdtp::UberDispatcher::Dispatch(v8_crdtp::Dispatchable const&) const::$_0, void ()> >(std::__Cr::__function::__policy_storage const*) 0x00000000b91e6ee1 v8_crdtp::UberDispatcher::DispatchResult::Run() 0x00000000b91e516a v8_inspector::V8InspectorSessionImpl::dispatchProtocolMessage(v8_inspector::StringView) v8-inspector-session-impl.cc:451 tns::JsV8InspectorClient::doDispatchMessage(v8::Isolate*, std::__Cr::basic_string<char, std::__Cr::char_traits<char>, std::__Cr::allocator<char> > const&) JsV8InspectorClient.cpp:131 tns::JsV8InspectorClient::dispatchMessage(std::__Cr::basic_string<char, std::__Cr::char_traits<char>, std::__Cr::allocator<char> > const&) JsV8InspectorClient.cpp:89 ::Java_com_tns_AndroidJsV8Inspector_dispatchMessage(JNIEnv *, jobject, jstring) com_tns_AndroidJsV8Inspector.cpp:29 art_quick_generic_jni_trampoline 0x00000000e400b2b3 art_quick_invoke_stub 0x00000000e4004aa3 art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*) 0x00000000e4099502 art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, art::ShadowFrame*, unsigned short, art::JValue*) 0x00000000e424f882 bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*) 0x00000000e4243bbf void art::interpreter::ExecuteSwitchImplCpp<false, false>(art::interpreter::SwitchImplContext*) 0x00000000e4017fcf ExecuteSwitchImplAsm 0x00000000e400bf63 art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame&, art::JValue, bool, bool) (.llvm.10914192770458939989) 0x00000000e4238e02 art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame*, art::JValue*) 0x00000000e4242da0 bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*) 0x00000000e4243ba1 void art::interpreter::ExecuteSwitchImplCpp<false, false>(art::interpreter::SwitchImplContext*) 0x00000000e4017d01 ExecuteSwitchImplAsm 0x00000000e400bf63 art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame&, art::JValue, bool, bool) (.llvm.10914192770458939989) 0x00000000e4238e02 art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame*, art::JValue*) 0x00000000e4242da0 bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*) 0x00000000e4243ba1 void art::interpreter::ExecuteSwitchImplCpp<false, false>(art::interpreter::SwitchImplContext*) 0x00000000e4016381 ExecuteSwitchImplAsm 0x00000000e400bf63 art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame&, art::JValue, bool, bool) (.llvm.10914192770458939989) 0x00000000e4238e02 art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame*, art::JValue*) 0x00000000e4242da0 bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*) 0x00000000e4243ba1 void art::interpreter::ExecuteSwitchImplCpp<false, false>(art::interpreter::SwitchImplContext*) 0x00000000e4017fcf ExecuteSwitchImplAsm 0x00000000e400bf63 art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame&, art::JValue, bool, bool) (.llvm.10914192770458939989) 0x00000000e4238e02 art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame*, art::JValue*) 0x00000000e4242da0 bool art::interpreter::DoCall<false, true>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*) 0x00000000e4244636 void art::interpreter::ExecuteSwitchImplCpp<true, false>(art::interpreter::SwitchImplContext*) 0x00000000e4057794 ExecuteSwitchImplAsm 0x00000000e400bf63 art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame&, art::JValue, bool, bool) (.llvm.10914192770458939989) 0x00000000e4238c0f art::interpreter::EnterInterpreterFromEntryPoint(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame*) 0x00000000e4242c81 artQuickToInterpreterBridge 0x00000000e4656186 art_quick_to_interpreter_bridge 0x00000000e400b38e <unknown> 0x00000000e400b530 As Eduardo mentioned, any hints or insights would be very appreciated! Thanks, Igor On Monday, 21 February 2022 at 22:33:22 UTC+1 Eduardo Speroni wrote: > Hello! > > We're trying to upgrade the v8 runtime to 9.7 in NativeScript but ran into > this issue when implementing the code for enabling the inspector console. > > We receive the message and call v8::debug::EvaluateGlobal with > kDisableBreaksAndThrowOnSideEffect: > > > https://github.com/NativeScript/android-runtime/blob/3a8316d47f965730ca9edeec8bed733a2636c6d9/test-app/runtime/src/main/cpp/v8_inspector/src/inspector/v8-runtime-agent-impl.cc#L279-L289 > > After that the thread hangs. Pausing the app shows the following stack > trace: > > syscall 0x00000073f171d35c __futex_wait_ex(void volatile*, bool, int, > bool, timespec const*) 0x00000073f1721984 pthread_cond_wait > 0x00000073f1781b90 > v8::internal::OptimizingCompileDispatcher::FlushQueues(v8::internal::BlockingBehavior, > > bool) 0x00000070cd85c348 > v8::internal::OptimizingCompileDispatcher::Flush(v8::internal::BlockingBehavior) > > 0x00000070cd85c3b4 > v8::internal::Debug::DeoptimizeFunction(v8::internal::Handle<v8::internal::SharedFunctionInfo>) > > 0x00000070cd576324 v8::internal::Runtime_DebugOnFunctionCall(int, unsigned > long*, v8::internal::Isolate*) 0x00000070cd8f8b98 > Builtins_CEntry_Return1_DontSaveFPRegs_ArgvOnStack_NoBuiltinExit > 0x00000070cdb6856c Builtins_CallFunction_ReceiverIsAny 0x00000070cdae25ec > Builtins_JSEntryTrampoline 0x00000070cdaebacc Builtins_JSEntry > 0x00000070cdaeb768 v8::internal::(anonymous > namespace)::Invoke(v8::internal::Isolate*, v8::internal::(anonymous > namespace)::InvokeParams const&) 0x00000070cd60b6d4 > v8::internal::Execution::CallScript(v8::internal::Isolate*, > v8::internal::Handle<v8::internal::JSFunction>, > v8::internal::Handle<v8::internal::Object>, > v8::internal::Handle<v8::internal::FixedArray>) 0x00000070cd60b9d4 > v8::internal::DebugEvaluate::Global(v8::internal::Isolate*, > v8::internal::Handle<v8::internal::JSFunction>, > v8::debug::EvaluateGlobalMode, v8::internal::REPLMode) 0x00000070cd56926c > v8::internal::DebugEvaluate::Global(v8::internal::Isolate*, > v8::internal::Handle<v8::internal::String>, v8::debug::EvaluateGlobalMode, > v8::internal::REPLMode) 0x00000070cd569080 > v8::debug::EvaluateGlobal(v8::Isolate*, v8::Local<v8::String>, > v8::debug::EvaluateGlobalMode, bool) 0x00000070cd566580 > v8_inspector::V8RuntimeAgentImpl::evaluate(v8_inspector::String16 const&, > v8_crdtp::detail::ValueMaybe<v8_inspector::String16>, > v8_crdtp::detail::ValueMaybe<bool>, v8_crdtp::detail::ValueMaybe<bool>, > v8_crdtp::detail::ValueMaybe<int>, v8_crdtp::detail::ValueMaybe<bool>, > v8_crdtp::detail::ValueMaybe<bool>, v8_crdtp::detail::ValueMaybe<bool>, > v8_crdtp::detail::ValueMaybe<bool>, v8_crdtp::detail::ValueMaybe<bool>, > v8_crdtp::detail::ValueMaybe<double>, v8_crdtp::detail::ValueMaybe<bool>, > v8_crdtp::detail::ValueMaybe<bool>, v8_crdtp::detail::ValueMaybe<bool>, > v8_crdtp::detail::ValueMaybe<v8_inspector::String16>, > std::__Cr::unique_ptr<v8_inspector::protocol::Runtime::Backend::EvaluateCallback, > > std::__Cr::default_delete<v8_inspector::protocol::Runtime::Backend::EvaluateCallback> > > >) v8-runtime-agent-impl.cc:309 > v8_inspector::protocol::Runtime::DomainDispatcherImpl::evaluate(v8_crdtp::Dispatchable > > const&) Runtime.cpp:961 > v8_inspector::protocol::Runtime::DomainDispatcherImpl::Dispatch(v8_crdtp::span<unsigned > > char>)::$_69::operator()(v8_crdtp::Dispatchable const&) const > Runtime.cpp:635 > decltype(std::__Cr::forward<v8_inspector::protocol::Runtime::DomainDispatcherImpl::Dispatch(v8_crdtp::span<unsigned > > char>)::$_69&>(fp)(std::__Cr::forward<v8_crdtp::Dispatchable const&>(fp0))) > std::__Cr::__invoke<v8_inspector::protocol::Runtime::DomainDispatcherImpl::Dispatch(v8_crdtp::span<unsigned > > char>)::$_69&, v8_crdtp::Dispatchable > const&>(v8_inspector::protocol::Runtime::DomainDispatcherImpl::Dispatch(v8_crdtp::span<unsigned > > char>)::$_69&, v8_crdtp::Dispatchable const&) type_traits:3694 void > std::__Cr::__invoke_void_return_wrapper<void, > true>::__call<v8_inspector::protocol::Runtime::DomainDispatcherImpl::Dispatch(v8_crdtp::span<unsigned > > char>)::$_69&, v8_crdtp::Dispatchable > const&>(v8_inspector::protocol::Runtime::DomainDispatcherImpl::Dispatch(v8_crdtp::span<unsigned > > char>)::$_69&, v8_crdtp::Dispatchable const&) __functional_base:348 > std::__Cr::__function::__default_alloc_func<v8_inspector::protocol::Runtime::DomainDispatcherImpl::Dispatch(v8_crdtp::span<unsigned > > char>)::$_69, void (v8_crdtp::Dispatchable > const&)>::operator()(v8_crdtp::Dispatchable const&) functional:1611 void > std::__Cr::__function::__policy_invoker<void (v8_crdtp::Dispatchable > const&)>::__call_impl<std::__Cr::__function::__default_alloc_func<v8_inspector::protocol::Runtime::DomainDispatcherImpl::Dispatch(v8_crdtp::span<unsigned > > char>)::$_69, void (v8_crdtp::Dispatchable const&)> > >(std::__Cr::__function::__policy_storage const*, v8_crdtp::Dispatchable > const&) functional:2092 v8_crdtp::UberDispatcher::DispatchResult::Run() > 0x00000070cd1e2954 > v8_inspector::V8InspectorSessionImpl::dispatchProtocolMessage(v8_inspector::StringView) > > v8-inspector-session-impl.cc:454 > tns::JsV8InspectorClient::doDispatchMessage(v8::Isolate*, > std::__Cr::basic_string<char, std::__Cr::char_traits<char>, > std::__Cr::allocator<char> > const&) JsV8InspectorClient.cpp:131 > tns::JsV8InspectorClient::dispatchMessage(std::__Cr::basic_string<char, > std::__Cr::char_traits<char>, std::__Cr::allocator<char> > const&) > JsV8InspectorClient.cpp:89 > ::Java_com_tns_AndroidJsV8Inspector_dispatchMessage(JNIEnv *, jobject, > jstring) com_tns_AndroidJsV8Inspector.cpp:29 > art_quick_generic_jni_trampoline 0x00000071422d9a48 art_quick_invoke_stub > 0x00000071422d0168 > art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, > art::ArtMethod*, art::ShadowFrame*, unsigned short, art::JValue*) > 0x00000071422f47c8 bool art::interpreter::DoCall<false, > false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction > const*, unsigned short, art::JValue*) 0x0000007142417a20 void > art::interpreter::ExecuteSwitchImplCpp<false, > false>(art::interpreter::SwitchImplContext*) 0x000000714221660c > ExecuteSwitchImplAsm 0x00000071422dc3dc > art::interpreter::ExecuteSwitch(art::Thread*, art::CodeItemDataAccessor > const&, art::ShadowFrame&, art::JValue, bool) (.llvm.6649268296134209133) > 0x0000007142545d58 art::interpreter::Execute(art::Thread*, > art::CodeItemDataAccessor const&, art::ShadowFrame&, art::JValue, bool, > bool) (.llvm.6649268296134209133) 0x000000714227e2f0 > art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, > art::CodeItemDataAccessor const&, art::ShadowFrame*, art::JValue*) > 0x00000071423851d4 bool art::interpreter::DoCall<false, > false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction > const*, unsigned short, art::JValue*) 0x0000007142417c98 void > art::interpreter::ExecuteSwitchImplCpp<false, > false>(art::interpreter::SwitchImplContext*) 0x00000071422166a0 > ExecuteSwitchImplAsm 0x00000071422dc3dc > art::interpreter::ExecuteSwitch(art::Thread*, art::CodeItemDataAccessor > const&, art::ShadowFrame&, art::JValue, bool) (.llvm.6649268296134209133) > 0x0000007142545d58 art::interpreter::Execute(art::Thread*, > art::CodeItemDataAccessor const&, art::ShadowFrame&, art::JValue, bool, > bool) (.llvm.6649268296134209133) 0x000000714227e2f0 > art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, > art::CodeItemDataAccessor const&, art::ShadowFrame*, art::JValue*) > 0x00000071423851d4 bool art::interpreter::DoCall<false, > false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction > const*, unsigned short, art::JValue*) 0x0000007142417c98 void > art::interpreter::ExecuteSwitchImplCpp<false, > false>(art::interpreter::SwitchImplContext*) 0x0000007142210704 > ExecuteSwitchImplAsm 0x00000071422dc3dc > art::interpreter::ExecuteSwitch(art::Thread*, art::CodeItemDataAccessor > const&, art::ShadowFrame&, art::JValue, bool) (.llvm.6649268296134209133) > 0x0000007142545d58 art::interpreter::Execute(art::Thread*, > art::CodeItemDataAccessor const&, art::ShadowFrame&, art::JValue, bool, > bool) (.llvm.6649268296134209133) 0x000000714227e2f0 > art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, > art::CodeItemDataAccessor const&, art::ShadowFrame*, art::JValue*) > 0x00000071423851d4 bool art::interpreter::DoCall<false, > false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction > const*, unsigned short, art::JValue*) 0x0000007142417c98 void > art::interpreter::ExecuteSwitchImplCpp<false, > false>(art::interpreter::SwitchImplContext*) 0x000000714221660c > ExecuteSwitchImplAsm 0x00000071422dc3dc > art::interpreter::ExecuteSwitch(art::Thread*, art::CodeItemDataAccessor > const&, art::ShadowFrame&, art::JValue, bool) (.llvm.6649268296134209133) > 0x0000007142545d58 art::interpreter::Execute(art::Thread*, > art::CodeItemDataAccessor const&, art::ShadowFrame&, art::JValue, bool, > bool) (.llvm.6649268296134209133) 0x000000714227e2f0 > art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, > art::CodeItemDataAccessor const&, art::ShadowFrame*, art::JValue*) > 0x00000071423851d4 bool art::interpreter::DoCall<false, > false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction > const*, unsigned short, art::JValue*) 0x0000007142417c98 void > art::interpreter::ExecuteSwitchImplCpp<false, > false>(art::interpreter::SwitchImplContext*) 0x0000007142210704 > ExecuteSwitchImplAsm 0x00000071422dc3dc MterpInvokeStatic > 0x0000007142775dc0 mterp_op_invoke_static 0x00000071422caa18 > art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, > art::ShadowFrame&, art::JValue, bool, bool) (.llvm.6649268296134209133) > 0x000000714227dd78 artQuickToInterpreterBridge 0x000000714227cf20 > art_quick_to_interpreter_bridge 0x00000071422d9b7c <unknown> > 0x00000071422d9d90 > > > > I believe the code is hanging on this line exactly: > > > https://github.com/v8/v8/blob/2257f6b14584c191e601cd10ccf3925540f2e492/src/compiler-dispatcher/optimizing-compile-dispatcher.cc#L179 > > but I can't find out why. Checking the other threads it doesn't seem there > are any v8 calls hanging. If we switch to kDisableBreaks or kDefault then > the app doesn't hang anymore, but the behavior still isn't correct. > > Any insight would be greatly appreciated! Thanks > -- -- v8-users mailing list v8-users@googlegroups.com http://groups.google.com/group/v8-users --- You received this message because you are subscribed to the Google Groups "v8-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to v8-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/v8-users/64391392-e134-4b57-9bd8-b1b7c41f8a5dn%40googlegroups.com.
