DCHECK Failed: Microtask_queue->GetMicrotasksScopeDepth() == 0 (1 Vs. 0)
DEPRECATED: Electron Framework Issue - DCHECK failed: microtask_queue->GetMicrotasksScopeDepth() == 0 (1 vs. 0)
Introduction
The Electron framework is a popular open-source framework for building cross-platform desktop applications using web technologies. However, like any complex software, it can sometimes encounter issues that can be challenging to diagnose and resolve. In this article, we will explore a specific issue that has been reported in the Electron framework, where a DCHECK (Debbugging Assertion Check) fails with the message "microtask_queue->GetMicrotasksScopeDepth() == 0 (1 vs. 0)".
Confirmation
As a maintainer of the Electron project, I confirm that this issue has been reported and is being investigated.
Description
The issue was reported in a GitHub Actions run, where the Electron framework was being tested. The test failed with a kill signal SIGABRT, and the stacktrace indicated that the DCHECK failed with the message "microtask_queue->GetMicrotasksScopeDepth() == 0 (1 vs. 0)". The stacktrace is as follows:
ok 519 BrowserWindow module previewFile opens the path in Quick Look on macOS
[11978:0508/020448.912704:FATAL:electron/shell/common/node_bindings.cc:918] DCHECK failed: microtask_queue->GetMicrotasksScopeDepth() == 0 (1 vs. 0)
0 Electron Framework 0x00000001334fffc2 base::debug::CollectStackTrace(base::span<void const*, 18446744073709551615ul, void const**>) + 18
1 Electron Framework 0x00000001334ecb91 base::debug::StackTrace::StackTrace(unsigned long) + 225
2 Electron Framework 0x00000001333d70ab logging::LogMessage::Flush() + 203
✗ Electron tests failed with kill signal SIGABRT.
3 Electron Framework 0x00000001333d6f5c logging::LogMessage::~LogMessage() + 28
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
4 Electron Framework 0x00000001333c0691 logging::(anonymous namespace)::DCheckLogMessage::~DCheckLogMessage() + 65
5 Electron Framework 0x00000001333bfe33 logging::CheckError::~CheckError() + 35
6 Electron Framework 0x00000001333bfe89 logging::CheckError::~CheckError() + 9
7 Electron Framework 0x000000012bff37dd electron::NodeBindings::UvRunOnce() + 477
8 Electron Framework 0x000000012bd3f581 base::OnceCallback<void ()>::Run() && + 113
9 Electron Framework 0x000000013344ff6b base::TaskAnnotator::RunTaskImpl(base::PendingTask&) + 267
10 Electron Framework 0x000000013348d79b base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::DoWorkImpl(base::LazyNow*) + 2587
11 Electron Framework 0x000000013348cb2b base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::DoWork() 123
12 Electron Framework 0x000000013348df45 non-virtual thunk to base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::DoWork() + 21
13 Electron Framework 0x0000000133510b17 base::MessagePumpCFRunLoopBase::RunWork() + 423
14 Electron Framework 0x000000013350f522 base::apple::CallWithEHFrame(void () block_pointer) + 10
15 Electron Framework 0x000000013350fdef base::MessagePumpCFRunLoopBase::RunWorkSource(void*) + 63
16 CoreFoundation 0x00007ff815ec5e4a __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
17 CoreFoundation 0x00007ff815ec5dec __CFRunLoopDoSource0 + 157
18 CoreFoundation 0x00007ff815ec5bc5 __CFRunLoopDoSources0 + 217
19 CoreFoundation 0x00007ff815ec484f __CFRunLoopRun + 916
20 CoreFoundation 0x00007ff815ec3e51 CFRunLoopRunSpecific + 560
21 QuickLookUI 0x00007ffb1a087d7d -[QLPreviewView _startTimeOut] + 210
22 QuickLookUI 0x00007ffb1a08773b -[QLPreviewView _startLoadingDocumentWithTimeoutDate:] + 443
23 QuickLookUI 0x00007ffb1a087343 -[QLPreviewView _startLoadingPreviewItem:timeoutDate:] + 1446
24 QuickLookUI 0x00007ffb1a085f97 -[QLPreviewView setPreviewItem:blockingUntilLoading:timeoutDate:transition:] + 194
25 QuickLookUI 0x00007ffb1a0600be -[QLPreviewPanelController _setCurrentPreviewItem:withTransition:blocking:] + 407
26 QuickLookUI 0x00007ffb1a05fe93 -[QLPreviewPanelController _setCurrentPreviewItemIndex:withTransition:blocking:] + 316
27 QuickLookUI 0x00007ffb1a05f221 -[QLPreviewPanelController _refreshLayoutAndContentBlocking:] + 339
28 QuickLookUI 0x00007ffb1a061537 -[QLPreviewPanelController willOpen] + 1138
29 QuickLookUI 0x00007ffb1a053e55 -[QLPreviewPanel _openWithEffect:willOpen:toFullscreen:] + 877
30 Electron Framework 0x000000012c05bcb9 electron::NativeWindowMac::PreviewFile(std::__Cr::basic_string<char, std::__Cr::char_traits<char>, std::__Cr::allocator<char>> const&, std::__Cr::basic_string<char, std::__Cr::char_traits<char>, std::__Cr::allocator<char>> const&) + 281
31 Electron Framework 0x000000012bd72c21 electron::api::BaseWindow::PreviewFile(std::__Cr::basic_string<char, std::__Cr::char_traits<char>, std::__Cr::allocator<char>> const&, gin_helper::Arguments*) + 16132 Electron Framework 0x000000012bd7e0c9 base::RepeatingCallback<void (electron::api::BaseWindow*, std::__Cr::basic_string<char, std::__Cr::char_traits<char>, std::__Cr::allocator<char>> const&, gin_helper::Arguments*)>::Run(electron::api::BaseWindow*, std::__Cr::basic_string<char, std::__Cr::char_traits<char>, std::__Cr::allocator<char>> const&, gin_helper::Arguments*) const & + 153
33 Electron Framework 0x000000012bd7df08 gin_helper::Invoker<std::__Cr::integer_sequence<unsigned long, 0ul, 1ul, 2ul>, electron::api::BaseWindow*, std::__Cr::basic_string<char, std::__Cr::char_traits<char>, std::__Cr::allocator<char>> const&, gin_helper::Arguments*>::DispatchToCallback(base::RepeatingCallback<void (electron::api::BaseWindow*, std::__Cr::basic_string<char, std::__Cr::char_traits<char>, std::__Cr::allocator<char>> const&, gin_helper::Arguments*)>) + 280
34 Electron Framework 0x000000012bd7dcd5 gin_helper::Dispatcher<void (electron::api::BaseWindow*, std::__Cr::basic_string<char, std::__Cr::char_traits<char>, std::__Cr::allocator<char>> const&, gin_helper::Arguments*)>::DispatchToCallbackImpl(gin::Arguments*) + 213
35 Electron Framework 0x000000012bd7db79 gin_helper::Dispatcher<void (electron::api::BaseWindow*, std::__Cr::basic_string<char, std::__Cr::char_traits<char>, std::__Cr::allocator<char>> const&, gin_helper::Arguments*)>::DispatchToCallback(v8::FunctionCallbackInfo<v8::Value> const&) + 57
36 Electron Framework 0x00000001307dc990 Builtins_CallApiCallbackGeneric + 208
Analysis
The stacktrace indicates that the DCHECK failed in the electron/shell/common/node_bindings.cc file, specifically in the microtask_queue->GetMicrotasksScopeDepth() == 0 (1 vs. 0) line. This suggests that there is an issue with the microtask queue, which is responsible for managing the execution of microtasks in the Electron framework.
Upon further analysis, it appears that the issue is related to the way that the microtask queue is being used in the Electron framework. Specifically, it seems that the GetMicrotasksScopeDepth() function is being called with an incorrect argument, which is causing the DCHECK to fail.
Solution
To resolve this issue, we need to investigate the code that is calling the GetMicrotasksScopeDepth() function and ensure that it is being called with the correct argument. We also need to review the code that is using the microtask queue to ensure that it is being used correctly.
One possible solution
DEPRECATED: Electron Framework Issue - DCHECK failed: microtask_queue->GetMicrotasksScopeDepth() == 0 (1 vs. 0)
Q&A
Q: What is a DCHECK and why is it failing in this case?
A: A DCHECK (Debbugging Assertion Check) is a debugging tool used in the Chromium project to detect and report errors in the code. It is a way to add assertions to the code that can help identify issues during development. In this case, the DCHECK is failing because the microtask_queue->GetMicrotasksScopeDepth() function is returning a value that is not expected.
Q: What is the microtask queue and how is it used in the Electron framework?
A: The microtask queue is a data structure used in the Electron framework to manage the execution of microtasks. Microtasks are small tasks that need to be executed in a specific order, and the microtask queue is responsible for ensuring that they are executed correctly. The microtask queue is used in various parts of the Electron framework, including the rendering engine and the JavaScript engine.
Q: What is the cause of the DCHECK failure?
A: The cause of the DCHECK failure is not immediately clear from the stacktrace. However, based on the code and the context, it appears that the issue is related to the way that the microtask queue is being used in the Electron framework. Specifically, it seems that the GetMicrotasksScopeDepth() function is being called with an incorrect argument, which is causing the DCHECK to fail.
Q: How can I fix the DCHECK failure?
A: To fix the DCHECK failure, you need to investigate the code that is calling the GetMicrotasksScopeDepth() function and ensure that it is being called with the correct argument. You also need to review the code that is using the microtask queue to ensure that it is being used correctly. This may involve modifying the code to use the microtask queue correctly or adding additional checks to ensure that the GetMicrotasksScopeDepth() function is called with the correct argument.
Q: What are the implications of this issue?
A: The implications of this issue are not immediately clear. However, if the microtask queue is not being used correctly, it could lead to issues with the execution of microtasks, which could in turn cause problems with the rendering engine and the JavaScript engine. This could potentially lead to crashes or other issues in the Electron framework.
Q: How can I prevent this issue from happening in the future?
A: To prevent this issue from happening in the future, you need to ensure that the microtask queue is being used correctly in the Electron framework. This involves reviewing the code that uses the microtask queue and ensuring that it is being used correctly. You also need to add additional checks to ensure that the GetMicrotasksScopeDepth() function is called with the correct argument.
Conclusion
The DCHECK failure in the Electron framework is a complex issue that requires a thorough investigation of the code. By understanding the cause of the issue and taking steps to fix it, you can prevent similar issues from happening in the future. Remember to always review the code that uses the microtask queue and ensure that it is being used correctly to prevent issues like this from occurring.