src/mem.h

   1 /*
   2     Copyright (C) 2017-2018 Ben Kibbey <bjk@luxsci.net>
   3
   4     This file is part of libpwmd.
   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 Street, Fifth Floor, Boston, MA  02110-1301
  19     USA
  20 */
  21 #ifndef MEM_H
  22 #define MEM_H
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <stdlib.h>
  28
  29 /* To avoid that a compiler optimizes certain memset calls away, these
  30    macros may be used instead. Thanks g10Code. */
  31 #define wipememory(_ptr,_set,_len) do { \
  32     volatile char *_vptr=(volatile char *)(_ptr); \
  33     size_t _vlen=(_len); \
  34     while(_vlen) { *_vptr=(_set); _vptr++; _vlen--; } \
  35 } while(0)
  36
  37 #ifdef __cplusplus
  38 extern "C"
  39 {
  40 #endif
  41
  42 #ifdef MEM_DEBUG
  43 #define _xfree free
  44 #define _xmalloc malloc
  45 #define _xrealloc realloc
  46 #define _xcalloc calloc
  47   void *xrealloc_gpgrt (void *, size_t);
  48 #else
  49   void _xfree (void *ptr)
  50      __attribute__ ((visibility ("hidden")));
  51   void *_xmalloc (size_t size)
  52      __attribute__ ((visibility ("hidden")));
  53   void *_xrealloc (void *ptr, size_t size)
  54      __attribute__ ((visibility ("hidden")));
  55   void *_xcalloc (size_t nmemb, size_t size)
  56      __attribute__ ((visibility ("hidden")));
  57   void *_xrealloc_gpgrt (void *, size_t)
  58      __attribute__ ((visibility ("hidden")));
  59 #endif
  60
  61 #ifdef __cplusplus
  62 }
  63 #endif
  64
  65 #endif