Re: New Essay: Serial Ports

From:

"David Ching" <dc@remove-this.dcsoft.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Fri, 28 Jul 2006 08:29:15 -0700

Message-ID:

<12ckbe17418co73@news.supernews.com>

"tio" <tomjey@wp.pl> wrote in message
news:1154098697.486292.301740@p79g2000cwp.googlegroups.com...

Ok but I have other problem

           DWORD result = ::WaitForMultipleObjects(2, waiters, FALSE,
INFINITE);
           switch(result)
              { /* wait */
               case WAIT_OBJECT_0: // shutdown
                   ::CancelIo(parms->hCom);
                   shutdown = ERROR_SUCCESS; // clean shutdown
                   running = FALSE;
                   continue;
               case WAIT_OBJECT_0 + 1: // I/O complete
                   ok = ::GetOverlappedResult(parms->hCom, &ovl,
&bytesRead, TRUE);
                   if(!ok)
                      { /* GetOverlappedResult failed */
                       DWORD err = ::GetLastError();
running = FALSE;
                       continue;
                      } /* GetOverlappedResult failed */
               default:
                   { /* trouble */
                    shutdown = ::GetLastError();
-----------> ASSERT(FALSE); // failure <
------------------this line
                    running = FALSE;
                    continue;
                   } /* trouble */
              } /* wait */
          } /* error */
/////////////end code

In line which is last Assert() I got error "debug assertion failed"
when I try start application.

Could it be? Could it be that Joe forgot to handle the WAIT_ABANDONED_x
case that he has rigorously critiqued other people for doing the exact same
thing? That's the only other (documented) result from
WaitForMultipleObjects, other than WAIT_TIMEOUT which shouldn't happen
because the wait is INFINITE.

-- David