C / C++ / MFC

Member 4250705 wrote:

Its creting new threads , but its overwriting the parameter value ie it is shared by all the created threads....

DWORD WINAPI personal_recv_fnc_thread( LPVOID lpParam)
{
  int i=10;
  TRACE("%X: RUNNING THREAD, starting from %d =====================\n", GetCurrewntThreadId(), i);
  do
  {
    Sleep(200);
    --i;
    TRACE("%X: %d\n", GetCurrewntThreadId(), i);
  }while(i>=0);
  return 0;
}

...
  CreateThread(...personal_recv_fnc_thread...);
  Sleep(300);
  CreateThread(...personal_recv_fnc_thread...);
  Sleep(300);
  CreateThread(...personal_recv_fnc_thread...);
...

Member 4250705 wrote:

Its creting new threads , but its overwriting the local integer value ie it is shared by all the created threads....

DWORD WINAPI ThreadProc(
  LPVOID lpParameter
  )
{
  int i=10;
  const int BUFSIZE = 0x100;
  TCHAR szBuf[BUFSIZE];
  HRESULT hr;

  do
  {
    Sleep(200);
    --i;
    printf("%x %d\n", (INT_PTR)lpParameter, i);
    
    hr = StringCchPrintf(szBuf, BUFSIZE, _T("%x %d\n"),  (INT_PTR)lpParameter, i);
    if ( SUCCEEDED(hr))  OutputDebugString(szBuf);
  } while (i>=0) ;
  return 0;
}


bool main()
{

  for (int i=0; i<10; i++)
  {
    DWORD dwId;
    CreateThread(NULL, 0, ThreadProc, (LPVOID)i, 0, &dwId);
  }

  Sleep (4000);

  return true;
}