misc/xmalloc.c

   1 /*
   2    xmalloc - a safe malloc
   3
   4    Use this function instead of malloc whenever you don't intend to check
   5    the return value yourself, for instance because you don't have a good
   6    way to handle a zero return value.
   7
   8    Typically, Wine's own memory requests should be handled by this function,
   9    while the clients should use malloc directly (and Wine should return an
  10    error to the client if allocation fails).
  11
  12    Copyright 1995 by Morten Welinder.
  13
  14 */
  15
  16 #include <stdlib.h>
  17 #include <string.h>
  18 #include "xmalloc.h"
  19 #include "debug.h"
  20
  21 void *xmalloc( int size )
  22 {
  23     void *res;
  24
  25     res = malloc (size ? size : 1);
  26     if (res == NULL)
  27     {
  28         MSG("Virtual memory exhausted.\n");
  29         exit (1);
  30     }
  31     memset(res,0,size);
  32     return res;
  33 }
  34
  35 void *xcalloc( int size )
  36 {
  37     void *res;
  38
  39     res = xmalloc (size);
  40     memset(res,0,size);
  41     return res;
  42 }
  43
  44
  45 void *xrealloc( void *ptr, int size )
  46 {
  47     void *res = realloc (ptr, size);
  48     if ((res == NULL) && size)
  49     {
  50         MSG("Virtual memory exhausted.\n");
  51         exit (1);
  52     }
  53     return res;
  54 }
  55
  56
  57 char *xstrdup( const char *str )
  58 {
  59     char *res = strdup( str );
  60     if (!res)
  61     {
  62         MSG("Virtual memory exhausted.\n");
  63         exit (1);
  64     }
  65     return res;
  66 }