dlls/msvcrt/exit.c

   1 /*
   2  * msvcrt.dll exit functions
   3  *
   4  * Copyright 2000 Jon Griffiths
   5  */
   6 #include "msvcrt.h"
   7
   8 #include "msvcrt/conio.h"
   9 #include "msvcrt/stdlib.h"
  10
  11
  12 DEFAULT_DEBUG_CHANNEL(msvcrt);
  13
  14 /* MT */
  15 extern CRITICAL_SECTION MSVCRT_exit_cs;
  16 #define LOCK_EXIT      EnterCriticalSection(&MSVCRT_exit_cs)
  17 #define UNLOCK_EXIT    LeaveCriticalSection(&MSVCRT_exit_cs)
  18
  19 static _onexit_t *MSVCRT_atexit_table = NULL;
  20 static int MSVCRT_atexit_table_size = 0;
  21 static int MSVCRT_atexit_registered = 0; /* Points to free slot */
  22
  23 extern int MSVCRT_app_type;
  24 void *MSVCRT_realloc(void *ptr, unsigned int size);
  25
  26 /* INTERNAL: call atexit functions */
  27 void __MSVCRT__call_atexit(void)
  28 {
  29   /* Note: should only be called with the exit lock held */
  30   TRACE("%d atext functions to call\n", MSVCRT_atexit_registered);
  31   /* Last registered gets executed first */
  32   while (MSVCRT_atexit_registered > 0)
  33   {
  34     MSVCRT_atexit_registered--;
  35     TRACE("next is %p\n",MSVCRT_atexit_table[MSVCRT_atexit_registered]);
  36     if (MSVCRT_atexit_table[MSVCRT_atexit_registered])
  37       (*MSVCRT_atexit_table[MSVCRT_atexit_registered])();
  38     TRACE("returned\n");
  39   }
  40 }
  41
  42 /*********************************************************************
  43  *              __dllonexit (MSVCRT.@)
  44  */
  45 _onexit_t __dllonexit(_onexit_t func, _onexit_t **start, _onexit_t **end)
  46 {
  47   _onexit_t *tmp;
  48   int len;
  49
  50   TRACE("(%p,%p,%p)\n", func, start, end);
  51
  52   if (!start || !*start || !end || !*end)
  53   {
  54    FIXME("bad table\n");
  55    return NULL;
  56   }
  57
  58   len = (*end - *start);
  59
  60   TRACE("table start %p-%p, %d entries\n", *start, *end, len);
  61
  62   if (++len <= 0)
  63     return NULL;
  64
  65   tmp = (_onexit_t *)MSVCRT_realloc(*start, len * sizeof(tmp));
  66   if (!tmp)
  67     return NULL;
  68   *start = tmp;
  69   *end = tmp + len;
  70   tmp[len - 1] = func;
  71   TRACE("new table start %p-%p, %d entries\n", *start, *end, len);
  72   return func;
  73 }
  74
  75 /*********************************************************************
  76  *              _exit (MSVCRT.@)
  77  */
  78 void MSVCRT__exit(int exitcode)
  79 {
  80   TRACE("(%d)\n", exitcode);
  81   ExitProcess(exitcode);
  82 }
  83
  84 /*********************************************************************
  85  *              _amsg_exit (MSVCRT.@)
  86  */
  87 void MSVCRT__amsg_exit(int errnum)
  88 {
  89   TRACE("(%d)\n", errnum);
  90   /* FIXME: text for the error number. */
  91   if (MSVCRT_app_type == 2)
  92   {
  93     /* FIXME: MsgBox */
  94   }
  95   _cprintf("\nruntime error R60%d\n",errnum);
  96   MSVCRT__exit(255);
  97 }
  98
  99 /*********************************************************************
 100  *              abort (MSVCRT.@)
 101  */
 102 void MSVCRT_abort(void)
 103 {
 104   TRACE("(void)\n");
 105   if (MSVCRT_app_type == 2)
 106   {
 107     /* FIXME: MsgBox */
 108   }
 109   _cputs("\nabnormal program termination\n");
 110   MSVCRT__exit(3);
 111 }
 112
 113 /*********************************************************************
 114  *              _assert (MSVCRT.@)
 115  */
 116 void MSVCRT__assert(const char* str, const char* file, unsigned int line)
 117 {
 118   TRACE("(%s,%s,%d)\n",str,file,line);
 119   if (MSVCRT_app_type == 2)
 120   {
 121     /* FIXME: MsgBox */
 122   }
 123   _cprintf("Assertion failed: %s, file %s, line %d\n\n",str,file, line);
 124   MSVCRT_abort();
 125 }
 126
 127 /*********************************************************************
 128  *              _c_exit (MSVCRT.@)
 129  */
 130 void MSVCRT__c_exit(void)
 131 {
 132   TRACE("(void)\n");
 133   /* All cleanup is done on DLL detach; Return to caller */
 134 }
 135
 136 /*********************************************************************
 137  *              _cexit (MSVCRT.@)
 138  */
 139 void MSVCRT__cexit(void)
 140 {
 141   TRACE("(void)\n");
 142   /* All cleanup is done on DLL detach; Return to caller */
 143 }
 144
 145 /*********************************************************************
 146  *              _onexit (MSVCRT.@)
 147  */
 148 _onexit_t _onexit(_onexit_t func)
 149 {
 150   TRACE("(%p)\n",func);
 151
 152   if (!func)
 153     return NULL;
 154
 155   LOCK_EXIT;
 156   if (MSVCRT_atexit_registered > MSVCRT_atexit_table_size - 1)
 157   {
 158     _onexit_t *newtable;
 159     TRACE("expanding table\n");
 160     newtable = MSVCRT_calloc(sizeof(void *),MSVCRT_atexit_table_size + 32);
 161     if (!newtable)
 162     {
 163       TRACE("failed!\n");
 164       UNLOCK_EXIT;
 165       return NULL;
 166     }
 167     memcpy (newtable, MSVCRT_atexit_table, MSVCRT_atexit_table_size);
 168     MSVCRT_atexit_table_size += 32;
 169     if (MSVCRT_atexit_table)
 170       MSVCRT_free (MSVCRT_atexit_table);
 171     MSVCRT_atexit_table = newtable;
 172   }
 173   MSVCRT_atexit_table[MSVCRT_atexit_registered] = func;
 174   MSVCRT_atexit_registered++;
 175   UNLOCK_EXIT;
 176   return func;
 177 }
 178
 179 /*********************************************************************
 180  *              exit (MSVCRT.@)
 181  */
 182 void MSVCRT_exit(int exitcode)
 183 {
 184   TRACE("(%d)\n",exitcode);
 185   LOCK_EXIT;
 186   __MSVCRT__call_atexit();
 187   UNLOCK_EXIT;
 188   ExitProcess(exitcode);
 189 }
 190
 191 /*********************************************************************
 192  *              atexit (MSVCRT.@)
 193  */
 194 int MSVCRT_atexit(_onexit_t func)
 195 {
 196   TRACE("(%p)\n", func);
 197   return _onexit(func) == func ? 0 : -1;
 198 }
 199
 200 /*********************************************************************
 201  *              _purecall (MSVCRT.@)
 202  */
 203 void _purecall(void)
 204 {
 205   TRACE("(void)\n");
 206   MSVCRT__amsg_exit( 25 );
 207 }