Как запустить процесс на конкретном процессоре в много процессорной системе?

Code:

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