reactos/lib/msvcrt/dllmain.c

   1 /* $Id$
   2  *
   3  * dllmain.c
   4  *
   5  * ReactOS MSVCRT.DLL Compatibility Library
   6  *
   7  *  THIS SOFTWARE IS NOT COPYRIGHTED
   8  *
   9  *  This source code is offered for use in the public domain. You may
  10  *  use, modify or distribute it freely.
  11  *
  12  *  This code is distributed in the hope that it will be useful but
  13  *  WITHOUT ANY WARRANTY. ALL WARRENTIES, EXPRESS OR IMPLIED ARE HEREBY
  14  *  DISCLAMED. This includes but is not limited to warrenties of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  16  *
  17  * $Revision: 1.24 $
  18  * $Author$
  19  * $Date$
  20  *
  21  */
  22
  23 #include <precomp.h>
  24 #include <stdio.h>
  25 #include <internal/tls.h>
  26 #include <stdlib.h>
  27 #include <internal/wine/msvcrt.h>
  28
  29 #define NDEBUG
  30 #include <internal/debug.h>
  31
  32
  33 /* EXTERNAL PROTOTYPES ********************************************************/
  34
  35 //void __fileno_init(void);
  36 extern BOOL __fileno_init(void);
  37 extern int BlockEnvToEnvironA(void);
  38 extern int BlockEnvToEnvironW(void);
  39 extern void FreeEnvironment(char **environment);
  40 extern void _atexit_cleanup(void);
  41
  42 extern unsigned int _osver;
  43 extern unsigned int _winminor;
  44 extern unsigned int _winmajor;
  45 extern unsigned int _winver;
  46
  47 extern char* _acmdln;        /* pointer to ascii command line */
  48 extern wchar_t* _wcmdln;     /* pointer to wide character command line */
  49 #undef _environ
  50 extern char** _environ;      /* pointer to environment block */
  51 extern char** __initenv;     /* pointer to initial environment block */
  52 extern wchar_t** _wenviron;  /* pointer to environment block */
  53 extern wchar_t** __winitenv; /* pointer to initial environment block */
  54
  55
  56 /* LIBRARY GLOBAL VARIABLES ***************************************************/
  57
  58 HANDLE hHeap = NULL;        /* handle for heap */
  59
  60
  61 /* LIBRARY ENTRY POINT ********************************************************/
  62
  63 BOOL
  64 STDCALL
  65 DllMain(PVOID hinstDll, ULONG dwReason, PVOID reserved)
  66 {
  67     switch (dwReason)
  68     {
  69     case DLL_PROCESS_ATTACH://1
  70         /* initialize version info */
  71         //DPRINT1("Process Attach %d\n", nAttachCount);
  72         //DPRINT1("Process Attach\n");
  73         _osver = GetVersion();
  74         _winmajor = (_osver >> 8) & 0xFF;
  75         _winminor = _osver & 0xFF;
  76         _winver = (_winmajor << 8) + _winminor;
  77         _osver = (_osver >> 16) & 0xFFFF;
  78         hHeap = HeapCreate(0, 100000, 0);
  79         if (hHeap == NULL)
  80             return FALSE;
  81         if (!__fileno_init())
  82             return FALSE;
  83
  84         /* create tls stuff */
  85         if (!CreateThreadData())
  86             return FALSE;
  87
  88         if (BlockEnvToEnvironA() < 0)
  89             return FALSE;
  90
  91         if (BlockEnvToEnvironW() < 0)
  92         {
  93             FreeEnvironment(_environ);
  94             return FALSE;
  95         }
  96
  97         _acmdln = _strdup(GetCommandLineA());
  98         _wcmdln = _wcsdup(GetCommandLineW());
  99
 100         /* FIXME: more initializations... */
 101
 102         /* FIXME: Initialization of the WINE code */
 103         msvcrt_init_mt_locks();
 104
 105         DPRINT("Attach done\n");
 106         break;
 107
 108     case DLL_THREAD_ATTACH://2
 109         break;
 110
 111     case DLL_THREAD_DETACH://4
 112         FreeThreadData(NULL);
 113         break;
 114
 115     case DLL_PROCESS_DETACH://0
 116         //DPRINT1("Detach %d\n", nAttachCount);
 117         //DPRINT("Detach\n");
 118         /* FIXME: more cleanup... */
 119         _fcloseall();
 120         _atexit_cleanup();
 121
 122         /* destroy tls stuff */
 123         DestroyThreadData();
 124
 125         if (__winitenv && __winitenv != _wenviron)
 126             FreeEnvironment((char**)__winitenv);
 127         if (_wenviron)
 128             FreeEnvironment((char**)_wenviron);
 129
 130         if (__initenv && __initenv != _environ)
 131             FreeEnvironment(__initenv);
 132         if (_environ)
 133             FreeEnvironment(_environ);
 134
 135         /* destroy heap */
 136         HeapDestroy(hHeap);
 137
 138         DPRINT("Detach done\n");
 139         break;
 140     }
 141
 142     return TRUE;
 143 }
 144
 145 /* EOF */