dlls/msvcrt/main.c

   1 /*
   2  * msvcrt.dll initialisation functions
   3  *
   4  * Copyright 2000 Jon Griffiths
   5  */
   6 #include "msvcrt.h"
   7
   8 #include "msvcrt/stdio.h"
   9
  10
  11 DEFAULT_DEBUG_CHANNEL(msvcrt);
  12
  13 /* Index to TLS */
  14 DWORD MSVCRT_tls_index;
  15
  16 /* MT locks */
  17 CRITICAL_SECTION MSVCRT_heap_cs;
  18 CRITICAL_SECTION MSVCRT_file_cs;
  19 CRITICAL_SECTION MSVCRT_exit_cs;
  20 CRITICAL_SECTION MSVCRT_console_cs;
  21 CRITICAL_SECTION MSVCRT_locale_cs;
  22
  23 static inline BOOL msvcrt_init_tls(void);
  24 static inline BOOL msvcrt_free_tls(void);
  25 static inline void msvcrt_init_critical_sections(void);
  26 static inline void msvcrt_free_critical_sections(void);
  27 const char* msvcrt_get_reason(DWORD reason) WINE_UNUSED;
  28
  29 void msvcrt_init_io(void);
  30 void msvcrt_init_console(void);
  31 void msvcrt_free_console(void);
  32 void msvcrt_init_args(void);
  33 void msvcrt_free_args(void);
  34 void msvcrt_init_vtables(void);
  35 char* MSVCRT_setlocale(int category, const char* locale);
  36
  37
  38 /*********************************************************************
  39  *                  Init
  40  */
  41 BOOL WINAPI MSVCRT_Init(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
  42 {
  43   MSVCRT_thread_data *tls;
  44
  45   TRACE("(0x%08x, %s, %p) pid(%ld), tid(%ld), tls(%ld)\n",
  46         hinstDLL, msvcrt_get_reason(fdwReason), lpvReserved,
  47         (long)GetCurrentProcessId(), (long)GetCurrentThreadId(),
  48         (long)MSVCRT_tls_index);
  49
  50   switch (fdwReason)
  51   {
  52   case DLL_PROCESS_ATTACH:
  53     if (!msvcrt_init_tls())
  54       return FALSE;
  55     msvcrt_init_vtables();
  56     msvcrt_init_critical_sections();
  57     msvcrt_init_io();
  58     msvcrt_init_console();
  59     msvcrt_init_args();
  60     MSVCRT_setlocale(0, "C");
  61     TRACE("finished process init\n");
  62     /* FALL THROUGH for Initial TLS allocation!! */
  63   case DLL_THREAD_ATTACH:
  64     TRACE("starting thread init\n");
  65     /* Create TLS */
  66     tls = (MSVCRT_thread_data*) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
  67                                           sizeof(MSVCRT_thread_data));
  68     if (!tls || !TlsSetValue(MSVCRT_tls_index, tls))
  69     {
  70       ERR("TLS init failed! error = %ld\n", GetLastError());
  71       return FALSE;
  72     }
  73     TRACE("finished thread init\n");
  74     break;
  75   case DLL_PROCESS_DETACH:
  76     msvcrt_free_critical_sections();
  77     _fcloseall();
  78     msvcrt_free_console();
  79     msvcrt_free_args();
  80     if (!msvcrt_free_tls())
  81       return FALSE;
  82     TRACE("finished process free\n");
  83     break;
  84   case DLL_THREAD_DETACH:
  85     /* Free TLS */
  86     tls = TlsGetValue(MSVCRT_tls_index);
  87
  88     if (!tls)
  89     {
  90       ERR("TLS free failed! error = %ld\n", GetLastError());
  91       return FALSE;
  92     }
  93     HeapFree(GetProcessHeap(), 0, tls);
  94     TRACE("finished thread free\n");
  95     break;
  96   }
  97   return TRUE;
  98 }
  99
 100 static inline BOOL msvcrt_init_tls(void)
 101 {
 102   MSVCRT_tls_index = TlsAlloc();
 103
 104   if (MSVCRT_tls_index == TLS_OUT_OF_INDEXES)
 105   {
 106     ERR("TlsAlloc() failed!\n");
 107     return FALSE;
 108   }
 109   return TRUE;
 110 }
 111
 112 static inline BOOL msvcrt_free_tls(void)
 113 {
 114   if (!TlsFree(MSVCRT_tls_index))
 115   {
 116     ERR("TlsFree() failed!\n");
 117     return FALSE;
 118   }
 119   return TRUE;
 120 }
 121
 122 static inline void msvcrt_init_critical_sections(void)
 123 {
 124   InitializeCriticalSectionAndSpinCount(&MSVCRT_heap_cs, 4000);
 125   InitializeCriticalSection(&MSVCRT_file_cs);
 126   InitializeCriticalSection(&MSVCRT_exit_cs);
 127   InitializeCriticalSection(&MSVCRT_console_cs);
 128   InitializeCriticalSection(&MSVCRT_locale_cs);
 129 }
 130
 131 static inline void msvcrt_free_critical_sections(void)
 132 {
 133   DeleteCriticalSection(&MSVCRT_locale_cs);
 134   DeleteCriticalSection(&MSVCRT_console_cs);
 135   DeleteCriticalSection(&MSVCRT_exit_cs);
 136   DeleteCriticalSection(&MSVCRT_file_cs);
 137   DeleteCriticalSection(&MSVCRT_heap_cs);
 138 }
 139
 140 const char* msvcrt_get_reason(DWORD reason)
 141 {
 142   switch (reason)
 143   {
 144   case DLL_PROCESS_ATTACH: return "DLL_PROCESS_ATTACH";
 145   case DLL_PROCESS_DETACH: return "DLL_PROCESS_DETACH";
 146   case DLL_THREAD_ATTACH:  return "DLL_THREAD_ATTACH";
 147   case DLL_THREAD_DETACH:  return "DLL_THREAD_DETACH";
 148   }
 149   return "UNKNOWN";
 150 }
 151
 152
 153 /*********************************************************************
 154  *                  Fixup functions
 155  *
 156  * Anything not really understood but needed to make the DLL work
 157  */
 158 void MSVCRT_I10_OUTPUT(void)
 159 {
 160   /* FIXME: This is probably data, not a function */
 161 }
 162
 163 void MSVCRT___unDName(void)
 164 {
 165   /* Called by all VC compiled progs on startup. No idea what it does */
 166 }
 167
 168 void MSVCRT___unDNameEx(void)
 169 {
 170   /* As above */
 171 }
 172