dlls/msvcrt/main.c

   1 /*
   2  * msvcrt.dll initialisation functions
   3  *
   4  * Copyright 2000 Jon Griffiths
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20 #include "msvcrt.h"
  21
  22 #include "wine/debug.h"
  23
  24 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
  25
  26 /* Index to TLS */
  27 DWORD msvcrt_tls_index;
  28
  29 static const char* msvcrt_get_reason(DWORD reason)
  30 {
  31   switch (reason)
  32   {
  33   case DLL_PROCESS_ATTACH: return "DLL_PROCESS_ATTACH";
  34   case DLL_PROCESS_DETACH: return "DLL_PROCESS_DETACH";
  35   case DLL_THREAD_ATTACH:  return "DLL_THREAD_ATTACH";
  36   case DLL_THREAD_DETACH:  return "DLL_THREAD_DETACH";
  37   }
  38   return "UNKNOWN";
  39 }
  40
  41 static inline BOOL msvcrt_init_tls(void)
  42 {
  43   msvcrt_tls_index = TlsAlloc();
  44
  45   if (msvcrt_tls_index == TLS_OUT_OF_INDEXES)
  46   {
  47     ERR("TlsAlloc() failed!\n");
  48     return FALSE;
  49   }
  50   return TRUE;
  51 }
  52
  53 static inline BOOL msvcrt_free_tls(void)
  54 {
  55   if (!TlsFree(msvcrt_tls_index))
  56   {
  57     ERR("TlsFree() failed!\n");
  58     return FALSE;
  59   }
  60   return TRUE;
  61 }
  62
  63 /*********************************************************************
  64  *                  Init
  65  */
  66 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
  67 {
  68   thread_data_t *tls;
  69
  70   TRACE("(%p, %s, %p) pid(%x), tid(%x), tls(%ld)\n",
  71         hinstDLL, msvcrt_get_reason(fdwReason), lpvReserved,
  72         GetCurrentProcessId(), GetCurrentThreadId(),
  73         (long)msvcrt_tls_index);
  74
  75   switch (fdwReason)
  76   {
  77   case DLL_PROCESS_ATTACH:
  78     if (!msvcrt_init_tls())
  79       return FALSE;
  80     msvcrt_init_mt_locks();
  81     msvcrt_init_io();
  82     msvcrt_init_console();
  83     msvcrt_init_args();
  84     msvcrt_init_signals();
  85     MSVCRT_setlocale(0, "C");
  86     TRACE("finished process init\n");
  87     break;
  88   case DLL_THREAD_ATTACH:
  89     break;
  90   case DLL_PROCESS_DETACH:
  91     msvcrt_free_mt_locks();
  92     msvcrt_free_io();
  93     msvcrt_free_console();
  94     msvcrt_free_args();
  95     msvcrt_free_signals();
  96     if (!msvcrt_free_tls())
  97       return FALSE;
  98     TRACE("finished process free\n");
  99     break;
 100   case DLL_THREAD_DETACH:
 101     /* Free TLS */
 102     tls = TlsGetValue(msvcrt_tls_index);
 103     if (tls)
 104     {
 105         HeapFree(GetProcessHeap(),0,tls->efcvt_buffer);
 106         HeapFree(GetProcessHeap(),0,tls->asctime_buffer);
 107         HeapFree(GetProcessHeap(),0,tls->wasctime_buffer);
 108         HeapFree(GetProcessHeap(),0,tls->strerror_buffer);
 109     }
 110     HeapFree(GetProcessHeap(), 0, tls);
 111     TRACE("finished thread free\n");
 112     break;
 113   }
 114   return TRUE;
 115 }
 116
 117 /*********************************************************************
 118  *              $I10_OUTPUT (MSVCRT.@)
 119  * Function not really understood but needed to make the DLL work
 120  */
 121 void CDECL MSVCRT_I10_OUTPUT(void)
 122 {
 123   /* FIXME: This is probably data, not a function */
 124   /* no it is a function. I10 is an Int of 10 bytes */
 125   /* also known as 80 bit flotaing point (long double */
 126   /* for some compilers, not MSVC) */
 127 }
 128
 129 /*********************************************************************
 130  *              _adjust_fdiv (MSVCRT.@)
 131  * Used by the MSVC compiler to work around the Pentium FDIV bug.
 132  */
 133 int MSVCRT__adjust_fdiv = 0;