dmake/dbug/malloc/malloc.h

   1 /*
   2  * (c) Copyright 1990 Conor P. Cahill (uunet!virtech!cpcahil).
   3  * You may copy, distribute, and use this software as long as this
   4  * copyright statement is not removed.
   5  */
   6 /*
   7  * $Id: malloc.h,v 1.2 2006-07-25 10:08:50 rt Exp $
   8  */
   9 struct mlist
  10 {
  11     struct mlist        * next;                 /* next entry in chain  */
  12     struct mlist        * prev;                 /* prev entry in chain  */
  13     int           flag;                 /* inuse flag           */
  14     unsigned int          r_size;               /* requested size       */
  15     union
  16     {
  17         unsigned int      size;         /* actual size          */
  18         double            unused_just_for_alignment;
  19     } s;
  20     char                  data[4];
  21 };
  22
  23 #define M_SIZE          ((int)(char *)((struct mlist *)0)->data)
  24 #define M_RND           0x08
  25
  26 #define M_INUSE         0x01
  27 #define M_MAGIC         0x03156100
  28
  29 #define M_BLOCKSIZE     (1024*8)
  30
  31 #define M_FILL          '\01'
  32 #define M_FREE_FILL     '\02'
  33
  34 #define M_ROUNDUP(size) {\
  35                 if( size & (M_RND-1) ) \
  36                 { \
  37                     size &= ~(M_RND-1); \
  38                     size += M_RND; \
  39                 } \
  40             }
  41
  42 /*
  43  * Malloc warning/fatal error handler defines...
  44  */
  45 #define M_HANDLE_DUMP   0x80  /* 128 */
  46 #define M_HANDLE_IGNORE 0
  47 #define M_HANDLE_ABORT  1
  48 #define M_HANDLE_EXIT   2
  49 #define M_HANDLE_CORE   3
  50
  51 /*
  52  * Mallopt commands and defaults
  53  */
  54
  55 #define MALLOC_WARN     1               /* set malloc warning handling  */
  56 #define MALLOC_FATAL    2               /* set malloc fatal handling    */
  57 #define MALLOC_ERRFILE  3               /* specify malloc error file    */
  58 #define MALLOC_CKCHAIN  4               /* turn on chain checking       */
  59 union malloptarg
  60 {
  61     int   i;
  62     char        * str;
  63 };
  64
  65 /*
  66  * Malloc warning/fatal error codes
  67  */
  68
  69 #define M_CODE_CHAIN_BROKE      1       /* malloc chain is broken       */
  70 #define M_CODE_NO_END           2       /* chain end != endptr          */
  71 #define M_CODE_BAD_PTR          3       /* pointer not in malloc area   */
  72 #define M_CODE_BAD_MAGIC        4       /* bad magic number in header   */
  73 #define M_CODE_BAD_CONNECT      5       /* chain poingers corrupt       */
  74 #define M_CODE_OVERRUN          6       /* data overrun in malloc seg   */
  75 #define M_CODE_REUSE            7       /* reuse of freed area          */
  76 #define M_CODE_NOT_INUSE        8       /* pointer is not in use        */
  77 #define M_CODE_NOMORE_MEM       9       /* no more memory available     */
  78 #define M_CODE_OUTOF_BOUNDS     10      /* gone beyound bounds          */
  79
  80 void malloc_warning();
  81 void malloc_fatal();
  82 void malloc_check_data();
  83 void malloc_check_str();
  84 void malloc_verify();
  85