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 #include "winternl.h"
  22
  23 #include "wine/debug.h"
  24
  25 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
  26
  27 /* Index to TLS */
  28 DWORD msvcrt_tls_index;
  29
  30 static const char* msvcrt_get_reason(DWORD reason)
  31 {
  32   switch (reason)
  33   {
  34   case DLL_PROCESS_ATTACH: return "DLL_PROCESS_ATTACH";
  35   case DLL_PROCESS_DETACH: return "DLL_PROCESS_DETACH";
  36   case DLL_THREAD_ATTACH:  return "DLL_THREAD_ATTACH";
  37   case DLL_THREAD_DETACH:  return "DLL_THREAD_DETACH";
  38   }
  39   return "UNKNOWN";
  40 }
  41
  42 static inline BOOL msvcrt_init_tls(void)
  43 {
  44   msvcrt_tls_index = TlsAlloc();
  45
  46   if (msvcrt_tls_index == TLS_OUT_OF_INDEXES)
  47   {
  48     ERR("TlsAlloc() failed!\n");
  49     return FALSE;
  50   }
  51   return TRUE;
  52 }
  53
  54 static inline BOOL msvcrt_free_tls(void)
  55 {
  56   if (!TlsFree(msvcrt_tls_index))
  57   {
  58     ERR("TlsFree() failed!\n");
  59     return FALSE;
  60   }
  61   return TRUE;
  62 }
  63
  64 static inline void msvcrt_free_tls_mem(void)
  65 {
  66   thread_data_t *tls = TlsGetValue(msvcrt_tls_index);
  67
  68   if (tls)
  69   {
  70     CloseHandle(tls->handle);
  71     HeapFree(GetProcessHeap(),0,tls->efcvt_buffer);
  72     HeapFree(GetProcessHeap(),0,tls->asctime_buffer);
  73     HeapFree(GetProcessHeap(),0,tls->wasctime_buffer);
  74     HeapFree(GetProcessHeap(),0,tls->strerror_buffer);
  75     HeapFree(GetProcessHeap(),0,tls->wcserror_buffer);
  76     HeapFree(GetProcessHeap(),0,tls->time_buffer);
  77     HeapFree(GetProcessHeap(),0,tls->tmpnam_buffer);
  78     HeapFree(GetProcessHeap(),0,tls->wtmpnam_buffer);
  79     if(tls->have_locale) {
  80         free_locinfo(tls->locinfo);
  81         free_mbcinfo(tls->mbcinfo);
  82     }
  83   }
  84   HeapFree(GetProcessHeap(), 0, tls);
  85 }
  86
  87 /*********************************************************************
  88  *                  Init
  89  */
  90 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
  91 {
  92   TRACE("(%p, %s, %p) pid(%x), tid(%x), tls(%u)\n",
  93         hinstDLL, msvcrt_get_reason(fdwReason), lpvReserved,
  94         GetCurrentProcessId(), GetCurrentThreadId(),
  95         msvcrt_tls_index);
  96
  97   switch (fdwReason)
  98   {
  99   case DLL_PROCESS_ATTACH:
 100     msvcrt_init_exception(hinstDLL);
 101     if(!msvcrt_init_heap())
 102         return FALSE;
 103     if(!msvcrt_init_tls()) {
 104       msvcrt_destroy_heap();
 105       return FALSE;
 106     }
 107     msvcrt_init_mt_locks();
 108     if(!msvcrt_init_locale()) {
 109         msvcrt_free_locks();
 110         msvcrt_free_tls_mem();
 111         msvcrt_destroy_heap();
 112         return FALSE;
 113     }
 114     msvcrt_init_math();
 115     msvcrt_init_io();
 116     msvcrt_init_console();
 117     msvcrt_init_args();
 118     msvcrt_init_signals();
 119 #if _MSVCR_VER == 0
 120     /* don't allow unloading msvcrt, we can't setup file handles twice */
 121     LdrAddRefDll( LDR_ADDREF_DLL_PIN, hinstDLL );
 122 #elif _MSVCR_VER >= 80
 123     MSVCRT__set_printf_count_output(0);
 124 #endif
 125     TRACE("finished process init\n");
 126     break;
 127   case DLL_THREAD_ATTACH:
 128     break;
 129   case DLL_PROCESS_DETACH:
 130     msvcrt_free_io();
 131     if (lpvReserved) break;
 132     msvcrt_free_popen_data();
 133     msvcrt_free_locks();
 134     msvcrt_free_console();
 135     msvcrt_free_args();
 136     msvcrt_free_signals();
 137     msvcrt_free_tls_mem();
 138     if (!msvcrt_free_tls())
 139       return FALSE;
 140     MSVCRT__free_locale(MSVCRT_locale);
 141     msvcrt_destroy_heap();
 142     TRACE("finished process free\n");
 143     break;
 144   case DLL_THREAD_DETACH:
 145     msvcrt_free_tls_mem();
 146     TRACE("finished thread free\n");
 147     break;
 148   }
 149   return TRUE;
 150 }