Subj : getprocessaffinitymask
To   : borland.public.cpp.borlandcpp
From : Jeff Kish <jeff.kish@mro.com>
Date : Wed Oct 01 2003 10:10 am

Greetings.
I am trying to write a small bit of code that will ensure that an
application runs on only one processor (hyperthreading not
withstanding).

Unfortunately my code is failing to even get the process. Can someone
make a comment here? This code keeps getting executed: MessageBox(
"Exit Error", "OpenProcessToken() failed", MB_OK);

is PROCESS_ALL_ACCESS the problem or something else?

Thanks

    HANDLE            hToken;
    LUID              takeOwnershipValue;
    TOKEN_PRIVILEGES  tkp;

    if (!OpenProcessToken(GetCurrentProcess(),
                          PROCESS_ALL_ACCESS, &hToken))
    {
      MessageBox( "Exit Error", "OpenProcessToken() failed", MB_OK);
      return;
    }
DWORD dwProcessAM;
DWORD dwSystemAM;
BOOL BResult = GetProcessAffinityMask(hToken,	// handle to the
process of interest
    &dwProcessAM,	// pointer to structure to receive process
affinity mask
    &dwSystemAM);	// pointer to structure to receive system
affinity mask

   if (BResult == 0)
   {
   	MessageBox("Unable to getprocessaffinitymask","cant
continue",MB_OK);
      return;
   }
char szMsg[2048];
	sprintf(szMsg,"system am: %d, process am:
%d",dwSystemAM,dwProcessAM);
   MessageBox(szMsg,szMsg,MB_OK);
	return;
Jeff Kish

.