reactos/lib/crt/misc/tls.c

   1 #include <precomp.h>
   2 #include <stdlib.h>
   3 #include <internal/tls.h>
   4 #include <internal/rterror.h>
   5
   6
   7 static DWORD TlsIndex = TLS_OUT_OF_INDEXES;
   8
   9
  10 static void InitThreadData(PTHREADDATA ThreadData)
  11 {
  12    ThreadData->terrno = 0;
  13    ThreadData->tdoserrno = 0;
  14
  15    ThreadData->fpecode = 0;
  16
  17    /* FIXME: init more thread local data */
  18
  19 }
  20
  21
  22 int SetThreadData(PTHREADDATA ThreadData)
  23 {
  24    if(TlsIndex == TLS_OUT_OF_INDEXES ||
  25       !TlsSetValue(TlsIndex, ThreadData))
  26      return FALSE;
  27
  28    InitThreadData(ThreadData);
  29
  30    return TRUE;
  31 }
  32
  33
  34 int CreateThreadData(void)
  35 {
  36    TlsIndex = TlsAlloc();
  37    return (TlsIndex != TLS_OUT_OF_INDEXES);
  38 }
  39
  40
  41 void DestroyThreadData(void)
  42 {
  43    if (TlsIndex != TLS_OUT_OF_INDEXES)
  44      {
  45         TlsFree(TlsIndex);
  46         TlsIndex = TLS_OUT_OF_INDEXES;
  47      }
  48 }
  49
  50
  51 void FreeThreadData(PTHREADDATA ThreadData)
  52 {
  53    if (TlsIndex != TLS_OUT_OF_INDEXES)
  54      {
  55         if (ThreadData == NULL)
  56            ThreadData = TlsGetValue(TlsIndex);
  57
  58         if (ThreadData != NULL)
  59           {
  60              /* FIXME: free more thread local data */
  61
  62              free(ThreadData);
  63           }
  64
  65         TlsSetValue(TlsIndex, NULL);
  66      }
  67 }
  68
  69
  70 PTHREADDATA GetThreadData(void)
  71 {
  72    PTHREADDATA ThreadData;
  73    DWORD LastError;
  74
  75    LastError = GetLastError();
  76    ThreadData = TlsGetValue(TlsIndex);
  77    if (ThreadData == NULL)
  78      {
  79         ThreadData = (PTHREADDATA)calloc(1, sizeof(THREADDATA));
  80         if (ThreadData != NULL)
  81           {
  82              TlsSetValue(TlsIndex, (LPVOID)ThreadData);
  83
  84              InitThreadData(ThreadData);
  85
  86              ThreadData->hThread = GetCurrentThread();
  87           }
  88         else
  89           {
  90             _amsg_exit(_RT_THREAD); /* write message and die */
  91           }
  92      }
  93
  94    SetLastError(LastError);
  95
  96    return ThreadData;
  97 }
  98
  99 /* EOF */
 100