Re: Reading Serial Port

From:
clinisbut <clinisbut@gmail.com>
Newsgroups:
microsoft.public.vc.mfc
Date:
Wed, 6 Feb 2008 06:28:49 -0800 (PST)
Message-ID:
<fd46315b-cfa9-4ac7-95e6-45a9690c1d6e@d21g2000prf.googlegroups.com>

OK, so it looks like pMySerial has another worker thread (pReaderThread)
that needs to be ended when pMySerial thread is ending? That's what the
above 2 lines say.


Yes, Inside my MySerial UI thread I have a worker thread
(ReaderThread ). I explained it some post ago.

    pReaderThread = AfxBeginThread( ReaderThread, this,
THREAD_PRIORITY_NORMAL );

This is how I create it.

Set a breakpoint in pReaderThread that is waiting for ShutdownEvent. Does
it get it? Does it properly exit the thread function when it does get it?


I set a breakpoint where ReaderThread gets ShutdownEvent and it
reaches ok.

When the thread function is exited, WFSO returns, and
pReaderThread->m_hThread is nomore. You should close its handle:

     CloseHandle( pReaderThread->m_hThread);


Sorry, I look better for the problem and I found that actually it pass
ok through that WFSO( pReaderThread->m_hThread, INFINITE ). That was
another problem (not related) and all code is executed, but still with
that memory leak:

MySerial.cpp(21) : {120} client block at 0x00432410, subtype 0, 224
bytes long. a MySerial object at $00432410, 224 bytes long
That points to
  IMPLEMENT_DYNCREATE(MySerial, CWinThread)
in my header.

Also, the WM_MY_SERIAL_CLOSE handler does not terminate the pMySerial
thread! You need to add this after pReaderThread has successfully
terminated:

    PostThreadMessage (GetCurrentThreadId(), WM_QUIT, 0, 0);


Doesn't do this the PostQuitMessage(0); I already have? (You can see
it some post 5 post above)

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