libs/pbd/dmalloc.cc

   1 /*
   2  * file that facilitates C++ program debugging.
   3  *
   4  * Copyright 1995 by Gray Watson
   5  *
   6  * This file is part of the dmalloc package.
   7  *
   8  * Permission to use, copy, modify, and distribute this software for any
   9  * NON-COMMERCIAL purpose and without fee is hereby granted, provided
  10  * that the above copyright notice and this permission notice appear
  11  * in all copies, and that the name of Gray Watson not be used in
  12  * advertising or publicity pertaining to distribution of the document
  13  * or software without specific, written prior permission.
  14  *
  15  * Please see the PERMISSIONS file or contact the author for information
  16  * about commercial licenses.
  17  *
  18  * Gray Watson makes no representations about the suitability of the
  19  * software described herein for any purpose.  It is provided "as is"
  20  * without express or implied warranty.
  21  *
  22  * The author may be contacted via http://www.letters.com/~gray/
  23  *
  24  * $Id$
  25  */
  26
  27 /*
  28  * This file is used to effectively redirect new to the more familiar
  29  * malloc and delete to the more familiar free so they can be debugged
  30  * with the debug malloc library..  They also give the known error
  31  * behavior, too.
  32  *
  33  * Compile and link this in with the C++ program you want to debug.
  34  *
  35  * NOTE: I am not a C++ hacker so feedback in the form of other hints
  36  * and ideas for C++ users would be much appreciated.
  37  */
  38
  39 #ifdef DEBUG_MALLOC
  40
  41 extern "C" {
  42 #include <stdlib.h>
  43 #include <dmalloc.h>
  44 #include "/usr/local/src/dmalloc-4.1.2/return.h"
  45 }
  46
  47 /*
  48  * An overload function for the C++ new.
  49  */
  50 void *
  51 operator new(size_t size)
  52 {
  53   char  *file;
  54   GET_RET_ADDR(file);
  55
  56   /* handle correct C++ semantics for an alloc of size 0 */
  57
  58   if (size == 0) size = 1;
  59
  60   return _malloc_leap(file, 0, size);
  61 }
  62
  63 /*
  64  * An overload function for the C++ new[].
  65  */
  66 void *
  67 operator new[](size_t size)
  68 {
  69   char  *file;
  70   GET_RET_ADDR(file);
  71
  72   /* handle correct C++ semantics for an alloc of size 0 */
  73
  74   if (size == 0) size = 1;
  75
  76   return _malloc_leap(file, 0, size);
  77 }
  78
  79 /*
  80  * An overload function for the C++ delete.
  81  */
  82 void
  83 operator delete(void *pnt)
  84 {
  85   char  *file;
  86   GET_RET_ADDR(file);
  87   _free_leap(file, 0, pnt);
  88 }
  89
  90 /*
  91  * An overload function for the C++ delete[].  Thanks to Jens Krinke
  92  * <j.krinke@gmx.de>
  93  */
  94 void
  95 operator delete[](void *pnt)
  96 {
  97   char  *file;
  98   GET_RET_ADDR(file);
  99   _free_leap(file, 0, pnt);
 100 }
 101
 102 #endif