xmalloc.h

   1 /*
   2  * Copyright 2004-2005 Timo Hirvonen
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation; either version 2 of the
   7  * License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  17  * 02111-1307, USA.
  18  */
  19
  20 #ifndef _XMALLOC_H
  21 #define _XMALLOC_H
  22
  23 #include <compiler.h>
  24
  25 #include <stdlib.h>
  26 #include <string.h>
  27
  28 extern void malloc_fail(void) __NORETURN;
  29
  30 #define xnew(type, n)           (type *)xmalloc(sizeof(type) * (n))
  31 #define xnew0(type, n)          (type *)xmalloc0(sizeof(type) * (n))
  32 #define xrenew(type, mem, n)    (type *)xrealloc(mem, sizeof(type) * (n))
  33
  34 static inline void * __MALLOC xmalloc(size_t size)
  35 {
  36         void *ptr = malloc(size);
  37
  38         if (unlikely(ptr == NULL))
  39                 malloc_fail();
  40         return ptr;
  41 }
  42
  43 static inline void * __MALLOC xmalloc0(size_t size)
  44 {
  45         void *ptr = calloc(1, size);
  46
  47         if (unlikely(ptr == NULL))
  48                 malloc_fail();
  49         return ptr;
  50 }
  51
  52 static inline void * __MALLOC xrealloc(void *ptr, size_t size)
  53 {
  54         ptr = realloc(ptr, size);
  55         if (unlikely(ptr == NULL))
  56                 malloc_fail();
  57         return ptr;
  58 }
  59
  60 static inline char * __MALLOC xstrdup(const char *str)
  61 {
  62         char *s = strdup(str);
  63
  64         if (unlikely(s == NULL))
  65                 malloc_fail();
  66         return s;
  67 }
  68
  69 extern char * __MALLOC xstrndup(const char *str, size_t n);
  70 extern char **str_array_add(char **a, int *allocp, int *posp, char *str);
  71
  72 static inline char * __MALLOC xxstrdup(const char *str)
  73 {
  74         if (str == NULL)
  75                 return NULL;
  76         return xstrdup(str);
  77 }
  78
  79 static inline void free_str_array(char **array)
  80 {
  81         int i;
  82
  83         if (array == NULL)
  84                 return;
  85         for (i = 0; array[i]; i++)
  86                 free(array[i]);
  87         free(array);
  88 }
  89
  90 #endif