dlls/msvcrt/exit.c

   1 /*
   2  * msvcrt.dll exit 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 <stdio.h>
  21 #include "msvcrt.h"
  22 #include "mtdll.h"
  23 #include "winuser.h"
  24 #include "wine/debug.h"
  25
  26 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
  27
  28 /* MT */
  29 #define LOCK_EXIT   _mlock(_EXIT_LOCK1)
  30 #define UNLOCK_EXIT _munlock(_EXIT_LOCK1)
  31
  32 static MSVCRT__onexit_t *MSVCRT_atexit_table = NULL;
  33 static int MSVCRT_atexit_table_size = 0;
  34 static int MSVCRT_atexit_registered = 0; /* Points to free slot */
  35 static MSVCRT_purecall_handler purecall_handler = NULL;
  36
  37 static const char szMsgBoxTitle[] = "Wine C++ Runtime Library";
  38
  39 extern int MSVCRT_app_type;
  40 extern MSVCRT_wchar_t *MSVCRT__wpgmptr;
  41
  42 static unsigned int MSVCRT_abort_behavior =  MSVCRT__WRITE_ABORT_MSG | MSVCRT__CALL_REPORTFAULT;
  43 static int MSVCRT_error_mode = MSVCRT__OUT_TO_DEFAULT;
  44
  45 void (*CDECL _aexit_rtn)(int) = MSVCRT__exit;
  46
  47 /* INTERNAL: call atexit functions */
  48 static void __MSVCRT__call_atexit(void)
  49 {
  50   /* Note: should only be called with the exit lock held */
  51   TRACE("%d atext functions to call\n", MSVCRT_atexit_registered);
  52   /* Last registered gets executed first */
  53   while (MSVCRT_atexit_registered > 0)
  54   {
  55     MSVCRT_atexit_registered--;
  56     TRACE("next is %p\n",MSVCRT_atexit_table[MSVCRT_atexit_registered]);
  57     if (MSVCRT_atexit_table[MSVCRT_atexit_registered])
  58       (*MSVCRT_atexit_table[MSVCRT_atexit_registered])();
  59     TRACE("returned\n");
  60   }
  61 }
  62
  63 /*********************************************************************
  64  *              __dllonexit (MSVCRT.@)
  65  */
  66 MSVCRT__onexit_t CDECL __dllonexit(MSVCRT__onexit_t func, MSVCRT__onexit_t **start, MSVCRT__onexit_t **end)
  67 {
  68   MSVCRT__onexit_t *tmp;
  69   int len;
  70
  71   TRACE("(%p,%p,%p)\n", func, start, end);
  72
  73   if (!start || !*start || !end || !*end)
  74   {
  75    FIXME("bad table\n");
  76    return NULL;
  77   }
  78
  79   len = (*end - *start);
  80
  81   TRACE("table start %p-%p, %d entries\n", *start, *end, len);
  82
  83   if (++len <= 0)
  84     return NULL;
  85
  86   tmp = MSVCRT_realloc(*start, len * sizeof(*tmp));
  87   if (!tmp)
  88     return NULL;
  89   *start = tmp;
  90   *end = tmp + len;
  91   tmp[len - 1] = func;
  92   TRACE("new table start %p-%p, %d entries\n", *start, *end, len);
  93   return func;
  94 }
  95
  96 /*********************************************************************
  97  *              _exit (MSVCRT.@)
  98  */
  99 void CDECL MSVCRT__exit(int exitcode)
 100 {
 101   TRACE("(%d)\n", exitcode);
 102   ExitProcess(exitcode);
 103 }
 104
 105 /* Print out an error message with an option to debug */
 106 static void DoMessageBoxW(const MSVCRT_wchar_t *lead, const MSVCRT_wchar_t *message)
 107 {
 108   static const MSVCRT_wchar_t message_format[] = {'%','s','\n','\n','P','r','o','g','r','a','m',':',' ','%','s','\n',
 109     '%','s','\n','\n','P','r','e','s','s',' ','O','K',' ','t','o',' ','e','x','i','t',' ','t','h','e',' ',
 110     'p','r','o','g','r','a','m',',',' ','o','r',' ','C','a','n','c','e','l',' ','t','o',' ','s','t','a','r','t',' ',
 111     't','h','e',' ','W','i','n','e',' ','d','e','b','b','u','g','e','r','.','\n',0};
 112
 113   MSGBOXPARAMSW msgbox;
 114   MSVCRT_wchar_t text[2048];
 115   INT ret;
 116
 117   MSVCRT__snwprintf(text,sizeof(text),message_format, lead, MSVCRT__wpgmptr, message);
 118
 119   msgbox.cbSize = sizeof(msgbox);
 120   msgbox.hwndOwner = GetActiveWindow();
 121   msgbox.hInstance = 0;
 122   msgbox.lpszText = (LPCWSTR)text;
 123   msgbox.lpszCaption = (LPCWSTR)szMsgBoxTitle;
 124   msgbox.dwStyle = MB_OKCANCEL|MB_ICONERROR;
 125   msgbox.lpszIcon = NULL;
 126   msgbox.dwContextHelpId = 0;
 127   msgbox.lpfnMsgBoxCallback = NULL;
 128   msgbox.dwLanguageId = LANG_NEUTRAL;
 129
 130   ret = MessageBoxIndirectW(&msgbox);
 131   if (ret == IDCANCEL)
 132     DebugBreak();
 133 }
 134
 135 static void DoMessageBox(const char *lead, const char *message)
 136 {
 137   MSVCRT_wchar_t leadW[1024], messageW[1024];
 138
 139   MSVCRT_mbstowcs(leadW, lead, 1024);
 140   MSVCRT_mbstowcs(messageW, message, 1024);
 141
 142   DoMessageBoxW(leadW, messageW);
 143 }
 144
 145 /*********************************************************************
 146  *              _amsg_exit (MSVCRT.@)
 147  */
 148 void CDECL _amsg_exit(int errnum)
 149 {
 150   TRACE("(%d)\n", errnum);
 151
 152   if ((MSVCRT_error_mode == MSVCRT__OUT_TO_MSGBOX) ||
 153      ((MSVCRT_error_mode == MSVCRT__OUT_TO_DEFAULT) && (MSVCRT_app_type == 2)))
 154   {
 155     char text[32];
 156     sprintf(text, "Error: R60%d",errnum);
 157     DoMessageBox("Runtime error!", text);
 158   }
 159   else
 160     _cprintf("\nruntime error R60%d\n",errnum);
 161   _aexit_rtn(255);
 162 }
 163
 164 /*********************************************************************
 165  *              abort (MSVCRT.@)
 166  */
 167 void CDECL MSVCRT_abort(void)
 168 {
 169   TRACE("()\n");
 170
 171   if (MSVCRT_abort_behavior & MSVCRT__WRITE_ABORT_MSG)
 172   {
 173     if ((MSVCRT_error_mode == MSVCRT__OUT_TO_MSGBOX) ||
 174        ((MSVCRT_error_mode == MSVCRT__OUT_TO_DEFAULT) && (MSVCRT_app_type == 2)))
 175     {
 176       DoMessageBox("Runtime error!", "abnormal program termination");
 177     }
 178     else
 179       _cputs("\nabnormal program termination\n");
 180   }
 181   MSVCRT_raise(MSVCRT_SIGABRT);
 182   /* in case raise() returns */
 183   MSVCRT__exit(3);
 184 }
 185
 186 /*********************************************************************
 187  *              _set_abort_behavior (MSVCRT.@)
 188  *
 189  * Not exported by native msvcrt, added in msvcr80
 190  */
 191 unsigned int CDECL MSVCRT__set_abort_behavior(unsigned int flags, unsigned int mask)
 192 {
 193   unsigned int old = MSVCRT_abort_behavior;
 194
 195   TRACE("%x, %x\n", flags, mask);
 196   if (mask & MSVCRT__CALL_REPORTFAULT)
 197     FIXME("_WRITE_CALL_REPORTFAULT unhandled\n");
 198
 199   MSVCRT_abort_behavior = (MSVCRT_abort_behavior & ~mask) | (flags & mask);
 200   return old;
 201 }
 202
 203 /*********************************************************************
 204  *              _wassert (MSVCRT.@)
 205  */
 206 void CDECL MSVCRT__wassert(const MSVCRT_wchar_t* str, const MSVCRT_wchar_t* file, unsigned int line)
 207 {
 208   static const MSVCRT_wchar_t assertion_failed[] = {'A','s','s','e','r','t','i','o','n',' ','f','a','i','l','e','d','!',0};
 209   static const MSVCRT_wchar_t format_msgbox[] = {'F','i','l','e',':',' ','%','s','\n','L','i','n','e',':',' ','%','d',
 210       '\n','\n','E','x','p','r','e','s','s','i','o','n',':',' ','\"','%','s','\"',0};
 211   static const MSVCRT_wchar_t format_console[] = {'A','s','s','e','r','t','i','o','n',' ','f','a','i','l','e','d',':',' ',
 212       '%','s',',',' ','f','i','l','e',' ','%','s',',',' ','l','i','n','e',' ','%','d','\n','\n',0};
 213
 214   TRACE("(%s,%s,%d)\n", debugstr_w(str), debugstr_w(file), line);
 215
 216   if ((MSVCRT_error_mode == MSVCRT__OUT_TO_MSGBOX) ||
 217      ((MSVCRT_error_mode == MSVCRT__OUT_TO_DEFAULT) && (MSVCRT_app_type == 2)))
 218   {
 219     MSVCRT_wchar_t text[2048];
 220     MSVCRT__snwprintf(text, sizeof(text), format_msgbox, file, line, str);
 221     DoMessageBoxW(assertion_failed, text);
 222   }
 223   else
 224     _cwprintf(format_console, str, file, line);
 225
 226   MSVCRT_raise(MSVCRT_SIGABRT);
 227   MSVCRT__exit(3);
 228 }
 229
 230 /*********************************************************************
 231  *              _assert (MSVCRT.@)
 232  */
 233 void CDECL MSVCRT__assert(const char* str, const char* file, unsigned int line)
 234 {
 235     MSVCRT_wchar_t strW[1024], fileW[1024];
 236
 237     MSVCRT_mbstowcs(strW, str, 1024);
 238     MSVCRT_mbstowcs(fileW, file, 1024);
 239
 240     MSVCRT__wassert(strW, fileW, line);
 241 }
 242
 243 /*********************************************************************
 244  *              _c_exit (MSVCRT.@)
 245  */
 246 void CDECL MSVCRT__c_exit(void)
 247 {
 248   TRACE("(void)\n");
 249   /* All cleanup is done on DLL detach; Return to caller */
 250 }
 251
 252 /*********************************************************************
 253  *              _cexit (MSVCRT.@)
 254  */
 255 void CDECL MSVCRT__cexit(void)
 256 {
 257   TRACE("(void)\n");
 258   LOCK_EXIT;
 259   __MSVCRT__call_atexit();
 260   UNLOCK_EXIT;
 261 }
 262
 263 /*********************************************************************
 264  *              _onexit (MSVCRT.@)
 265  */
 266 MSVCRT__onexit_t CDECL MSVCRT__onexit(MSVCRT__onexit_t func)
 267 {
 268   TRACE("(%p)\n",func);
 269
 270   if (!func)
 271     return NULL;
 272
 273   LOCK_EXIT;
 274   if (MSVCRT_atexit_registered > MSVCRT_atexit_table_size - 1)
 275   {
 276     MSVCRT__onexit_t *newtable;
 277     TRACE("expanding table\n");
 278     newtable = MSVCRT_calloc(sizeof(void *),MSVCRT_atexit_table_size + 32);
 279     if (!newtable)
 280     {
 281       TRACE("failed!\n");
 282       UNLOCK_EXIT;
 283       return NULL;
 284     }
 285     memcpy (newtable, MSVCRT_atexit_table, MSVCRT_atexit_table_size);
 286     MSVCRT_atexit_table_size += 32;
 287     MSVCRT_free (MSVCRT_atexit_table);
 288     MSVCRT_atexit_table = newtable;
 289   }
 290   MSVCRT_atexit_table[MSVCRT_atexit_registered] = func;
 291   MSVCRT_atexit_registered++;
 292   UNLOCK_EXIT;
 293   return func;
 294 }
 295
 296 /*********************************************************************
 297  *              exit (MSVCRT.@)
 298  */
 299 void CDECL MSVCRT_exit(int exitcode)
 300 {
 301   HMODULE hmscoree;
 302   static const WCHAR mscoreeW[] = {'m','s','c','o','r','e','e',0};
 303   void (WINAPI *pCorExitProcess)(int);
 304
 305   TRACE("(%d)\n",exitcode);
 306   MSVCRT__cexit();
 307
 308   hmscoree = GetModuleHandleW(mscoreeW);
 309
 310   if (hmscoree)
 311   {
 312     pCorExitProcess = (void*)GetProcAddress(hmscoree, "CorExitProcess");
 313
 314     if (pCorExitProcess)
 315       pCorExitProcess(exitcode);
 316   }
 317
 318   ExitProcess(exitcode);
 319 }
 320
 321 /*********************************************************************
 322  *              atexit (MSVCRT.@)
 323  */
 324 int CDECL MSVCRT_atexit(void (*func)(void))
 325 {
 326   TRACE("(%p)\n", func);
 327   return MSVCRT__onexit((MSVCRT__onexit_t)func) == (MSVCRT__onexit_t)func ? 0 : -1;
 328 }
 329
 330 /* _set_purecall_handler - not exported in native msvcrt */
 331 MSVCRT_purecall_handler CDECL _set_purecall_handler(MSVCRT_purecall_handler function)
 332 {
 333     MSVCRT_purecall_handler ret = purecall_handler;
 334
 335     TRACE("(%p)\n", function);
 336     purecall_handler = function;
 337     return ret;
 338 }
 339
 340 /*********************************************************************
 341  *              _purecall (MSVCRT.@)
 342  */
 343 void CDECL _purecall(void)
 344 {
 345   TRACE("(void)\n");
 346
 347   if(purecall_handler)
 348       purecall_handler();
 349   _amsg_exit( 25 );
 350 }
 351
 352 /******************************************************************************
 353  *              _set_error_mode (MSVCRT.@)
 354  *
 355  * Set the error mode, which describes where the C run-time writes error messages.
 356  *
 357  * PARAMS
 358  *   mode - the new error mode
 359  *
 360  * RETURNS
 361  *   The old error mode.
 362  *
 363  */
 364 int CDECL _set_error_mode(int mode)
 365 {
 366
 367   const int old = MSVCRT_error_mode;
 368   if ( MSVCRT__REPORT_ERRMODE != mode ) {
 369     MSVCRT_error_mode = mode;
 370   }
 371   return old;
 372 }