Re: [asio-users] win_iocp_io_service::shutdown_service() locks on timer_thread_->join()

[Daniele B. <dan...@eu...>]

>> All seems to work: the CWorker destructor is called but the call to
>> CoUninitialize() locks!
>> Here the Threads when the lock occur:
> 
> Do you really have some com ptrs marshalled from the main thread?

Hi Igor!

This is the fact...I THINK no.
The deadlock happen also if I remove the CoInitialize/CoUninitialize.
(I call these functions to post events from my C++ Object to the COM
object).

My COM wrapper only create an object using the factory function from my LIB:

HRESULT CTETRAMoto::FinalConstruct()
{
  _devTetra.reset( EuroATLib::GetTETRAMotoObj() );
}

and that's it.
Then inside the LIB, at the first object creation, a worker thread is
started...but no COM object 'live' into that thread!

Debugging a little deeper I see that, when the io_service.run() returns,
the Main thread is looped in win_iocp_io_service::shutdown_service() at:

while (::InterlockedExchangeAdd(&outstanding_work_, 0) > 0)
{ ... }

which never ends. If I force the flow to go ahead, there is the
timer_thread_->join() instruction which calls
::WaitForSingleObject(thread_, INFINITE) which, in turn, lock the main
thread!

Suggestions?
Daniele.