src/mem.h

   1 /*
   2     Copyright (C) 2016
   3     Ben Kibbey <bjk@luxsci.net>
   4
   5     This file is part of libpwmd.
   6
   7     Libpwmd is free software: you can redistribute it and/or modify
   8     it under the terms of the GNU General Public License as published by
   9     the Free Software Foundation, either version 2 of the License, or
  10     (at your option) any later version.
  11
  12     Libpwmd is distributed in the hope that it will be useful,
  13     but WITHOUT ANY WARRANTY; without even the implied warranty of
  14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15     GNU General Public License for more details.
  16
  17     You should have received a copy of the GNU General Public License
  18     along with libpwmd.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20 #ifndef MEM_H
  21 #define MEM_H
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <stdlib.h>
  27
  28 /* To avoid that a compiler optimizes certain memset calls away, these
  29    macros may be used instead. Thanks g10Code. */
  30 #define wipememory(_ptr,_set,_len) do { \
  31     volatile char *_vptr=(volatile char *)(_ptr); \
  32     size_t _vlen=(_len); \
  33     while(_vlen) { *_vptr=(_set); _vptr++; _vlen--; } \
  34 } while(0)
  35
  36 #ifdef __cplusplus
  37 extern "C"
  38 {
  39 #endif
  40
  41 #ifdef MEM_DEBUG
  42 #define _xfree free
  43 #define _xmalloc malloc
  44 #define _xrealloc realloc
  45 #define _xcalloc calloc
  46   void *xrealloc_gpgrt (void *, size_t);
  47 #else
  48   void _xfree (void *ptr)
  49      __attribute__ ((visibility ("hidden")));
  50   void *_xmalloc (size_t size)
  51      __attribute__ ((visibility ("hidden")));
  52   void *_xrealloc (void *ptr, size_t size)
  53      __attribute__ ((visibility ("hidden")));
  54   void *_xcalloc (size_t nmemb, size_t size)
  55      __attribute__ ((visibility ("hidden")));
  56   void *_xrealloc_gpgrt (void *, size_t)
  57      __attribute__ ((visibility ("hidden")));
  58 #endif
  59
  60 #ifdef __cplusplus
  61 }
  62 #endif
  63
  64 #endif