DCHECK exception on CEFCLIENT (and my app) shutdown

[BobM]

Windows 10 Version 10.0.18362 Build 18362,
Visual Studio 2017, CEF cef_binary_77.1.12+gc63c001+chromium-77.0.3865.90_windows32, debug build, sandbox on or off, and no debug info as required to avoid corrupt exe...

When shutting down get...

[1015/144634.126:FATAL:memory_dump_manager.cc(247)] Check failed: (*mdp_iter)->task_runner && (*mdp_iter)->task_runner->RunsTasksInCurrentSequence(). MemoryDumpProvider "DiscardableSharedMemoryManager" attempted to unregister itself in a racy way. Please file a crbug.

Occurs in cefclient.exe as well as my application, and if a browser has or has not been created.

Code: Select all

    libcef.dll!logging::LogMessage::~LogMessage() Line 944   C++
>   libcef.dll!base::trace_event::MemoryDumpManager::UnregisterDumpProviderInternal(base::trace_event::MemoryDumpProvider * mdp, bool take_mdp_ownership_and_delete_async) Line 257   C++
    libcef.dll!base::trace_event::MemoryDumpManager::UnregisterDumpProvider(base::trace_event::MemoryDumpProvider * mdp) Line 204   C++
    libcef.dll!discardable_memory::DiscardableSharedMemoryManager::~DiscardableSharedMemoryManager() Line 247   C++
    libcef.dll!discardable_memory::DiscardableSharedMemoryManager::~DiscardableSharedMemoryManager() Line 243   C++
    [Inline Frame] libcef.dll!std::__1::default_delete<discardable_memory::DiscardableSharedMemoryManager>::operator()(discardable_memory::DiscardableSharedMemoryManager * __ptr) Line 2338   C++
    [Inline Frame] libcef.dll!std::__1::unique_ptr<discardable_memory::DiscardableSharedMemoryManager,std::__1::default_delete<discardable_memory::DiscardableSharedMemoryManager> >::reset(discardable_memory::DiscardableSharedMemoryManager * __p) Line 2651   C++
    [Inline Frame] libcef.dll!std::__1::unique_ptr<discardable_memory::DiscardableSharedMemoryManager,std::__1::default_delete<discardable_memory::DiscardableSharedMemoryManager> >::~unique_ptr() Line 2605   C++
    libcef.dll!content::ContentMainRunnerImpl::~ContentMainRunnerImpl() Line 608   C++
    libcef.dll!content::ContentMainRunnerImpl::~ContentMainRunnerImpl() Line 605   C++
    [Inline Frame] libcef.dll!std::__1::default_delete<content::ContentMainRunnerImpl>::operator()(content::ContentMainRunnerImpl * __ptr) Line 2338   C++
    [Inline Frame] libcef.dll!std::__1::unique_ptr<content::ContentMainRunnerImpl,std::__1::default_delete<content::ContentMainRunnerImpl> >::reset(content::ContentMainRunnerImpl * __p) Line 2651   C++
    [Inline Frame] libcef.dll!std::__1::unique_ptr<content::ContentMainRunnerImpl,std::__1::default_delete<content::ContentMainRunnerImpl> >::~unique_ptr() Line 2605   C++
    libcef.dll!content::ContentServiceManagerMainDelegate::~ContentServiceManagerMainDelegate() Line 21   C++
    libcef.dll!content::ContentServiceManagerMainDelegate::~ContentServiceManagerMainDelegate() Line 21   C++
    [Inline Frame] libcef.dll!std::__1::default_delete<content::ContentServiceManagerMainDelegate>::operator()(content::ContentServiceManagerMainDelegate * __ptr) Line 2338   C++
    [Inline Frame] libcef.dll!std::__1::unique_ptr<content::ContentServiceManagerMainDelegate,std::__1::default_delete<content::ContentServiceManagerMainDelegate> >::reset(content::ContentServiceManagerMainDelegate * __p) Line 2651   C++
    libcef.dll!CefContext::FinalizeShutdown() Line 638   C++
    libcef.dll!CefContext::Shutdown() Line 482   C++
    libcef.dll!CefShutdown() Line 272   C++


[BobM]

Also, I just determined that the DCHECK exception only occurs when using --multi-threaded-message-loop.

[BobM]

Hi Marshall,

In cefclient.exe (and my application) this is still a problem with the cef_binary_77.1.18+g8e8d602+chromium-77.0.3865.120_windows32 binaries and Visual Studio 2019 when running Debug with multi-threaded-message-pump.

Any chance of having a look at this?
Thanks

[amaitland]

For reference there is a known shutdown issue with multithreaded message loop enabled.

https://bitbucket.org/chromiumembedded/ ... closing-if

Maybe unrelated

[BobM]

For reference there is a known shutdown issue with multithreaded message loop enabled.

https://bitbucket.org/chromiumembedded/ ... closing-if

Maybe unrelated

It does look unrelated.

[salvadordf]

I could reproduce this issue too with the latest cefclient.

I couldn't find an open issue about this so I created a new one :
https://bitbucket.org/chromiumembedded/ ... t-shutdown