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 inline BOOL msvcrt_init_tls(void);
  30 static inline BOOL msvcrt_free_tls(void);
  31 const char* msvcrt_get_reason(DWORD reason);
  32
  33 /*********************************************************************
  34  *                  Init
  35  */
  36 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
  37 {
  38   thread_data_t *tls;
  39
  40   TRACE("(%p, %s, %p) pid(%x), tid(%x), tls(%ld)\n",
  41         hinstDLL, msvcrt_get_reason(fdwReason), lpvReserved,
  42         GetCurrentProcessId(), GetCurrentThreadId(),
  43         (long)msvcrt_tls_index);
  44
  45   switch (fdwReason)
  46   {
  47   case DLL_PROCESS_ATTACH:
  48     if (!msvcrt_init_tls())
  49       return FALSE;
  50     msvcrt_init_mt_locks();
  51     msvcrt_init_io();
  52     msvcrt_init_console();
  53     msvcrt_init_args();
  54     msvcrt_init_signals();
  55     MSVCRT_setlocale(0, "C");
  56     TRACE("finished process init\n");
  57     break;
  58   case DLL_THREAD_ATTACH:
  59     break;
  60   case DLL_PROCESS_DETACH:
  61     msvcrt_free_mt_locks();
  62     msvcrt_free_io();
  63     msvcrt_free_console();
  64     msvcrt_free_args();
  65     msvcrt_free_signals();
  66     if (!msvcrt_free_tls())
  67       return FALSE;
  68     TRACE("finished process free\n");
  69     break;
  70   case DLL_THREAD_DETACH:
  71     /* Free TLS */
  72     tls = TlsGetValue(msvcrt_tls_index);
  73     if (tls)
  74     {
  75         HeapFree(GetProcessHeap(),0,tls->efcvt_buffer);
  76         HeapFree(GetProcessHeap(),0,tls->asctime_buffer);
  77         HeapFree(GetProcessHeap(),0,tls->wasctime_buffer);
  78         HeapFree(GetProcessHeap(),0,tls->strerror_buffer);
  79     }
  80     HeapFree(GetProcessHeap(), 0, tls);
  81     TRACE("finished thread free\n");
  82     break;
  83   }
  84   return TRUE;
  85 }
  86
  87 static inline BOOL msvcrt_init_tls(void)
  88 {
  89   msvcrt_tls_index = TlsAlloc();
  90
  91   if (msvcrt_tls_index == TLS_OUT_OF_INDEXES)
  92   {
  93     ERR("TlsAlloc() failed!\n");
  94     return FALSE;
  95   }
  96   return TRUE;
  97 }
  98
  99 static inline BOOL msvcrt_free_tls(void)
 100 {
 101   if (!TlsFree(msvcrt_tls_index))
 102   {
 103     ERR("TlsFree() failed!\n");
 104     return FALSE;
 105   }
 106   return TRUE;
 107 }
 108
 109 const char* msvcrt_get_reason(DWORD reason)
 110 {
 111   switch (reason)
 112   {
 113   case DLL_PROCESS_ATTACH: return "DLL_PROCESS_ATTACH";
 114   case DLL_PROCESS_DETACH: return "DLL_PROCESS_DETACH";
 115   case DLL_THREAD_ATTACH:  return "DLL_THREAD_ATTACH";
 116   case DLL_THREAD_DETACH:  return "DLL_THREAD_DETACH";
 117   }
 118   return "UNKNOWN";
 119 }
 120
 121
 122 /*********************************************************************
 123  *              $I10_OUTPUT (MSVCRT.@)
 124  * Function not really understood but needed to make the DLL work
 125  */
 126 void CDECL MSVCRT_I10_OUTPUT(void)
 127 {
 128   /* FIXME: This is probably data, not a function */
 129   /* no it is a function. I10 is an Int of 10 bytes */
 130   /* also known as 80 bit flotaing point (long double */
 131   /* for some compilers, not MSVC) */
 132 }
 133
 134 /*********************************************************************
 135  *              _adjust_fdiv (MSVCRT.@)
 136  * Used by the MSVC compiler to work around the Pentium FDIV bug.
 137  */
 138 int MSVCRT__adjust_fdiv = 0;