Как запустить процесс на конкретном процессоре в многопроцессорной системе?

function ExecuteProcess(FileName: string; Visibility: Integer; BitMask: Integer; Synch: Boolean): Longword;
//valori di Visibility:
{
Value                Meaning
SW_HIDE            :Hides the window and activates another window.
SW_MAXIMIZE        :Maximizes the specified window.
SW_MINIMIZE        :Minimizes the specified window and activates the next top-level window in the Z order.
SW_RESTORE        :Activates and displays the window. If the window is minimized or maximized,
                    Windows restores it to its original size and position. An application should
                    specify this flag when restoring a minimized window.
SW_SHOW                :Activates the window and displays it in its current size and position.
SW_SHOWDEFAULT        :Sets the show state based on the SW_ flag specified in the STARTUPINFO
                        structure passed to the CreateProcess function by the program that started the application.
SW_SHOWMAXIMIZED       :Activates the window and displays it as a maximized window.
SW_SHOWMINIMIZED       :Activates the window and displays it as a minimized window.
SW_SHOWMINNOACTIVE     :Displays the window as a minimized window. The active window remains active.
SW_SHOWNA              :Displays the window in its current state. The active window remains active.
SW_SHOWNOACTIVATE      :Displays a window in its most recent size and position. The active window remains active.
SW_SHOWNORMAL          :Activates and displays a window. If the window is minimized or maximized,
                      Windows restores it to its original size and position. An application should specify this
                      flag when displaying the window for the first time.
}
//FileName: the name of the program I want to launch
//Bitmask:   specifies the set of CPUs on wich I want to run the program
    //the BitMask is built in the following manner:
    //I have a bit sequence: every bit is associated to a CPU (from right to left)
    //I set the bit to 1 if I want to use the corrisponding CPU, 0 otherwise
    //for example: I have 4 processor and I want to run the specified process on the CPU 2 and 4:
    //the corresponding bitmask will be     1010 -->2^0 * 0 + 2^1 * 1 + 2^2 * 0 + 2^3 * 1 = 2 + 8 = 10
    //hence BitMask = 10
//Synch: Boolean --> True if I want a Synchronous Execution (I cannot close
//my application before the launched process is terminated)
 
var
  zAppName: array[0..512] of Char;
  zCurDir: array[0..255] of Char;
  WorkDir: string;
  StartupInfo: TStartupInfo;
  ProcessInfo: TProcessInformation;
  Closed: Boolean;
begin
  Closed := True;
  StrPCopy(zAppName, FileName);
  GetDir(0, WorkDir);
  StrPCopy(zCurDir, WorkDir);
  FillChar(StartupInfo, SizeOf(StartupInfo), #0);
  StartupInfo.cb := SizeOf(StartupInfo);
  StartupInfo.dwFlags := STARTF_USESHOWWINDOW;
  StartupInfo.wShowWindow := Visibility;
  if not CreateProcess(nil,
    zAppName, // pointer to command line string
    nil, // pointer to process security attributes
    nil, // pointer to thread security attributes
    False, // handle inheritance flag
    CREATE_NEW_CONSOLE or // creation flags
    NORMAL_PRIORITY_CLASS,
    nil, //pointer to new environment block
    nil, // pointer to current directory name
    StartupInfo, // pointer to STARTUPINFO
    ProcessInfo) // pointer to PROCESS_INF
    then Result := WAIT_FAILED
  else
  begin
    //running the process on the set of CPUs specified by BitMask
    SetProcessAffinityMask(ProcessInfo.hProcess, BitMask);
    /////
    if (Synch = True) then //if I want a Synchronous execution (I cannot close my
    // application before this process is terminated)
      begin
        Closed:= False;
        repeat
          case WaitForSingleObject(
            ProcessInfo.hProcess, 100) of
              WAIT_OBJECT_0 : Closed:= True;
              WAIT_FAILED : RaiseLastWin32Error;
          end;
          Application.ProcessMessages;
        until (Closed);
        GetExitCodeProcess(ProcessInfo.hProcess, Result);
        //exit code of the launched process (0 if the process returned no error  )
        CloseHandle(ProcessInfo.hProcess);
        CloseHandle(ProcessInfo.hThread);
      end
    else
      begin
        Result := 0;
      end;
  end;
end; {ExecuteProcess}
 
// Open Taskmanager, select the launched process, right click,
// "Set affinity", you will see a check on the CPUs you selected

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