Undocumented functions of NTDLL

2OOO, 19 December



THREAD_BASIC_INFORMATION
THREAD_BASIC_INFORMATION

typedef struct _THREAD_BASIC_INFORMATION {



  NTSTATUS                ExitStatus;
  PVOID                   TebBaseAddress;
  CLIENT_ID               ClientId;
  KAFFINITY               AffinityMask;
  KPRIORITY               Priority;
  KPRIORITY               BasePriority;




} THREAD_BASIC_INFORMATION, *PTHREAD_BASIC_INFORMATION;


  • ExitStatus
    •     Thread exit status. If thread is not terminated, it has STATUS_PENDING value. See also Win32 API GetExitCodeThread.
  • TebBaseAddress
    •     Address of TEB structure for specified thread. See also NtCurrentTeb.
  • ClientId
    •     Unique process id and thread id.
  • AffinityMask
    •     Thread affinity mask. There are no Win32 call GetThreadAffinityMask, but there's function SetThreadAffinityMask that's use AffinityMask value. See also ThreadAffinityMask information class.
  • Priority
    •     I'm not sure...
  • BasePriority
    •     Thread base priority. Used by Kernel32.dll in function GetThreadPriority. See also ThreadBasePriority information class.


    Structure is used with ThreadBasicInformation information class in NtQueryInformationThread call.


    Documented by:
    Tomasz Nowak



    Requirements:
    Library: ntdll.lib


    See also:
    NtQueryInformationThread
    THREAD_INFORMATION_CLASS