v4.0/src/TOOLS/BLD/INC/MALLOC.H

   1 /***
   2 *malloc.h - declarations and definitions for memory allocation functions
   3 *
   4 *   Copyright (c) 1985-1988, Microsoft Corporation.  All rights reserved.
   5 *
   6 *Purpose:
   7 *   Contains the function declarations for memory allocation functions;
   8 *   also defines manifest constants and types used by the heap routines.
   9 *   [System V]
  10 *
  11 *******************************************************************************/
  12
  13
  14 #define _HEAPEMPTY      -1
  15 #define _HEAPOK         -2
  16 #define _HEAPBADBEGIN   -3
  17 #define _HEAPBADNODE    -4
  18 #define _HEAPEND        -5
  19 #define _HEAPBADPTR     -6
  20 #define _FREEENTRY      0
  21 #define _USEDENTRY      1
  22
  23 #ifndef _SIZE_T_DEFINED
  24 typedef unsigned int size_t;
  25 #define _SIZE_T_DEFINED
  26 #endif
  27
  28 #if (!defined(NO_EXT_KEYS))
  29
  30 #ifndef _HEAPINFO_DEFINED
  31 typedef struct _heapinfo {
  32     int far * _pentry;
  33     size_t _size;
  34     int _useflag;
  35     } _HEAPINFO;
  36 #define _HEAPINFO_DEFINED
  37 #endif
  38
  39 #else   /* NO_EXT_KEYS */
  40 #if (defined(M_I86CM) || defined(M_I86LM) || defined(M_I86HM))
  41
  42 #ifndef _HEAPINFO_DEFINED
  43
  44 typedef struct _heapinfo {
  45     int * _pentry;
  46     size_t _size;
  47     int _useflag;
  48     } _HEAPINFO;
  49
  50 #define _HEAPINFO_DEFINED
  51 #endif
  52
  53 #endif  /* M_I86CM || M_I86LM || M_I86HM */
  54
  55 #endif  /* NO_EXT_KEYS */
  56
  57
  58 #if (defined(M_I86SM) || defined(M_I86MM))
  59 #define _heapchk  _nheapchk
  60 #define _heapset  _nheapset
  61 #define _heapwalk _nheapwalk
  62 #endif
  63 #if (defined(M_I86CM) || defined(M_I86LM) || defined(M_I86HM))
  64 #define _heapchk  _fheapchk
  65 #define _heapset  _fheapset
  66 #define _heapwalk _fheapwalk
  67 #endif
  68
  69 #ifndef NO_EXT_KEYS /* extensions enabled */
  70     #define _CDECL  cdecl
  71     #define _NEAR   near
  72 #else /* extensions not enabled */
  73     #define _CDECL
  74     #define _NEAR
  75 #endif /* NO_EXT_KEYS */
  76
  77
  78 /* external variable declarations */
  79 extern unsigned int _NEAR _CDECL _amblksiz;
  80
  81 /* function prototypes */
  82
  83 void * _CDECL alloca(size_t);
  84 void * _CDECL calloc(size_t, size_t);
  85 void * _CDECL _expand(void *, size_t);
  86 int _CDECL _fheapchk(void);
  87 int _CDECL _fheapset(unsigned int);
  88 unsigned int _CDECL _freect(size_t);
  89 void _CDECL free(void *);
  90 void * _CDECL malloc(size_t);
  91 size_t _CDECL _memavl(void);
  92 size_t _CDECL _memmax(void);
  93 size_t _CDECL _msize(void *);
  94 int _CDECL _nheapchk(void);
  95 int _CDECL _nheapset(unsigned int);
  96 void * _CDECL realloc(void *, size_t);
  97 void * _CDECL sbrk(int);
  98 size_t _CDECL stackavail(void);
  99
 100
 101 #ifndef NO_EXT_KEYS /* extensions enabled */
 102
 103 void cdecl _ffree(void far *);
 104 void far * cdecl _fmalloc(size_t);
 105 size_t cdecl _fmsize(void far *);
 106 #ifndef _QC
 107 void huge * cdecl halloc(long, size_t);
 108 void cdecl hfree(void huge *);
 109 #endif
 110 void cdecl _nfree(void near *);
 111 void near * cdecl _nmalloc(size_t);
 112 size_t cdecl _nmsize(void near *);
 113 int cdecl _nheapwalk(struct _heapinfo *);
 114 int cdecl _fheapwalk(struct _heapinfo *);
 115
 116 #else
 117 #if (defined(M_I86CM) || defined(M_I86LM) || defined(M_I86HM))
 118
 119 int _nheapwalk(struct _heapinfo *);
 120 int _fheapwalk(struct _heapinfo *);
 121
 122 #endif  /* M_I86CM || M_I86LM || M_I86HM */
 123
 124 #endif /* NO_EXT_KEYS */