win32ss/gdi/gdi32/main/dllmain.c

   1 /*
   2  * dllmain.c
   3  */
   4
   5 #include <precomp.h>
   6
   7 extern HGDIOBJ stock_objects[];
   8 BOOL SetStockObjects = FALSE;
   9 PDEVCAPS GdiDevCaps = NULL;
  10 PGDIHANDLECACHE GdiHandleCache = NULL;
  11 BOOL gbLpk = FALSE;
  12 RTL_CRITICAL_SECTION semLocal;
  13 extern CRITICAL_SECTION gcsClientObjLinks;
  14
  15 /*
  16  * GDI32.DLL does have an entry point for disable threadlibrarycall,. The initialization is done by a call
  17  * to GdiDllInitialize(). This call is done from the entry point of USER32.DLL.
  18  */
  19 BOOL
  20 WINAPI
  21 DllMain(
  22     HANDLE  hDll,
  23     DWORD   dwReason,
  24     LPVOID  lpReserved)
  25 {
  26     switch (dwReason)
  27     {
  28     case DLL_PROCESS_ATTACH :
  29         DisableThreadLibraryCalls(hDll);
  30         break;
  31
  32     default:
  33         break;
  34     }
  35     return TRUE;
  36 }
  37
  38
  39 VOID
  40 WINAPI
  41 GdiProcessSetup(VOID)
  42 {
  43     hProcessHeap = GetProcessHeap();
  44
  45     /* map the gdi handle table to user space */
  46     GdiHandleTable = NtCurrentTeb()->ProcessEnvironmentBlock->GdiSharedHandleTable;
  47     GdiSharedHandleTable = NtCurrentTeb()->ProcessEnvironmentBlock->GdiSharedHandleTable;
  48     GdiDevCaps = &GdiSharedHandleTable->DevCaps;
  49     CurrentProcessId = NtCurrentTeb()->ClientId.UniqueProcess;
  50     GDI_BatchLimit = (DWORD) NtCurrentTeb()->ProcessEnvironmentBlock->GdiDCAttributeList;
  51     GdiHandleCache = (PGDIHANDLECACHE)NtCurrentTeb()->ProcessEnvironmentBlock->GdiHandleBuffer;
  52     RtlInitializeCriticalSection(&semLocal);
  53     InitializeCriticalSection(&gcsClientObjLinks);
  54 }
  55
  56 VOID
  57 WINAPI
  58 GdiProcessShutdown(VOID)
  59 {
  60     DeleteCriticalSection(&gcsClientObjLinks);
  61     RtlDeleteCriticalSection(&semLocal);
  62 }
  63
  64
  65 /*
  66  * @implemented
  67  */
  68 BOOL
  69 WINAPI
  70 GdiDllInitialize(
  71     HANDLE hDll,
  72     DWORD dwReason,
  73     LPVOID lpReserved)
  74 {
  75     switch (dwReason)
  76     {
  77         case DLL_PROCESS_ATTACH:
  78         {
  79             /* Don't bother us for each thread */
  80             // DisableThreadLibraryCalls(hDll);
  81
  82             /* Initialize the kernel part of GDI first */
  83             if (!NtGdiInit()) return FALSE;
  84
  85             /* Now initialize ourselves */
  86             GdiProcessSetup();
  87             break;
  88         }
  89
  90         case DLL_THREAD_ATTACH:
  91         {
  92             NtCurrentTeb()->GdiTebBatch.Offset = 0;
  93             NtCurrentTeb()->GdiBatchCount = 0;
  94             break;
  95         }
  96
  97         case DLL_PROCESS_DETACH:
  98         {
  99             /* Cleanup */
 100             GdiProcessShutdown();
 101             return TRUE;
 102         }
 103
 104         default:
 105             return FALSE;
 106     }
 107
 108     /* Very simple, the list will fill itself as it is needed */
 109     if (!SetStockObjects)
 110     {
 111         RtlZeroMemory(&stock_objects, NB_STOCK_OBJECTS); // Assume ROS is dirty
 112         SetStockObjects = TRUE;
 113     }
 114
 115     return TRUE;
 116 }
 117
 118 /* EOF */