little_helpers/tikz/sketch-0.2.161/memutil.h

   1 /* memutil.h
   2    Copyright (C) 2005,2006,2007,2008 Eugene K. Ressler, Jr.
   3
   4 This file is part of Sketch, a small, simple system for making
   5 3d drawings with LaTeX and the PSTricks or TikZ package.
   6
   7 Sketch 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 3, or (at your option)
  10 any later version.
  11
  12 Sketch 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 Sketch; see the file COPYING.txt.  If not, see
  19 http://www.gnu.org/copyleft */
  20
  21 #ifndef __MEMUTIL_H
  22 #define __MEMUTIL_H
  23
  24 #include <stdlib.h>
  25 #include <string.h>
  26
  27 // booleans
  28 typedef int bool;
  29
  30 // bit N
  31 #define bit(N)  (1u << (N))
  32
  33 // size of a static or auto declared array
  34 #define ARRAY_SIZE(A) (sizeof (A) / sizeof (A)[0])
  35
  36 // zero the memory of struct at *P to zero
  37 #define SET_STRUCT_ZERO(P) memset((P), 0, sizeof *(P))
  38
  39 // zero the array A to zero
  40 #define SET_ARRAY_ZERO(A)  memset((A), 0, sizeof (A))
  41
  42 // checking memory allocators
  43 void *safe_malloc (unsigned size);
  44 void *safe_realloc (void *p, unsigned size);
  45 char *safe_strdup (char *str);
  46 void safe_free (void *p);
  47
  48 #define MALLOC_STRUCT(P)  (P) = safe_malloc(sizeof *(P))
  49
  50 // deliberately cause compilation errors if caller uses
  51 // system memory routines
  52 #ifdef _DEBUG
  53 #define malloc(N)    __call_safe_malloc_instead()
  54 #define realloc(P,N) __call_safe_alloc_instead()
  55 #define strdup(S)    __call_safe_alloc_instead()
  56 #define free(P)      __call_safe_free_instead()
  57 #endif
  58
  59 #endif