mingw/include/malloc.h

   1 /*
   2  * malloc.h
   3  * This file has no copyright assigned and is placed in the Public Domain.
   4  * This file is a part of the mingw-runtime package.
   5  * No warranty is given; refer to the file DISCLAIMER within the package.
   6  *
   7  * Support for programs which want to use malloc.h to get memory management
   8  * functions. Unless you absolutely need some of these functions and they are
   9  * not in the ANSI headers you should use the ANSI standard header files
  10  * instead.
  11  *
  12  */
  13
  14 #ifndef _MALLOC_H_
  15 #define _MALLOC_H_
  16
  17 /* All the headers include this file. */
  18 #include <_mingw.h>
  19
  20 #include <stdlib.h>
  21
  22 #ifndef RC_INVOKED
  23
  24 /*
  25  * The structure used to walk through the heap with _heapwalk.
  26  */
  27 typedef struct _heapinfo
  28 {
  29         int*    _pentry;
  30         size_t  _size;
  31         int     _useflag;
  32 } _HEAPINFO;
  33
  34 /* Values for _heapinfo.useflag */
  35 #define _FREEENTRY 0
  36 #define _USEDENTRY 1
  37
  38 /* Return codes for _heapwalk()  */
  39 #define _HEAPEMPTY      (-1)
  40 #define _HEAPOK         (-2)
  41 #define _HEAPBADBEGIN   (-3)
  42 #define _HEAPBADNODE    (-4)
  43 #define _HEAPEND        (-5)
  44 #define _HEAPBADPTR     (-6)
  45
  46 #ifdef  __cplusplus
  47 extern "C" {
  48 #endif
  49 /*
  50    The _heap* memory allocation functions are supported on NT
  51    but not W9x. On latter, they always set errno to ENOSYS.
  52 */
  53 _CRTIMP int __cdecl _heapwalk (_HEAPINFO*);
  54 #ifdef __GNUC__
  55 #define _alloca(x) __builtin_alloca((x))
  56 #endif
  57
  58 #ifndef _NO_OLDNAMES
  59 _CRTIMP int __cdecl heapwalk (_HEAPINFO*);
  60 #ifdef __GNUC__
  61 #define alloca(x) __builtin_alloca((x))
  62 #endif
  63 #endif  /* Not _NO_OLDNAMES */
  64
  65 _CRTIMP int __cdecl _heapchk (void);    /* Verify heap integrety. */
  66 _CRTIMP int __cdecl _heapmin (void);    /* Return unused heap to the OS. */
  67 _CRTIMP int __cdecl _heapset (unsigned int);
  68
  69 _CRTIMP size_t __cdecl _msize (void*);
  70 _CRTIMP size_t __cdecl _get_sbh_threshold (void);
  71 _CRTIMP int __cdecl _set_sbh_threshold (size_t);
  72 _CRTIMP void* __cdecl _expand (void*, size_t);
  73
  74 /* These require msvcr70.dll or higher. */
  75 #if __MSVCRT_VERSION__ >= 0x0700
  76 _CRTIMP void * __cdecl _aligned_offset_malloc(size_t, size_t, size_t);
  77 _CRTIMP void * __cdecl _aligned_offset_realloc(void*, size_t, size_t, size_t);
  78
  79 _CRTIMP void * __cdecl _aligned_malloc (size_t, size_t);
  80 _CRTIMP void * __cdecl _aligned_realloc (void*, size_t, size_t);
  81 _CRTIMP void __cdecl _aligned_free (void*);
  82 #endif /* __MSVCRT_VERSION__ >= 0x0700 */
  83
  84 /* These require libmingwex.a. */
  85 void * __cdecl __mingw_aligned_offset_malloc (size_t, size_t, size_t);
  86 void * __cdecl __mingw_aligned_offset_realloc (void*, size_t, size_t, size_t);
  87
  88 void * __cdecl __mingw_aligned_malloc (size_t, size_t);
  89 void * __cdecl __mingw_aligned_realloc (void*, size_t, size_t);
  90 void __cdecl __mingw_aligned_free (void*);
  91
  92 #ifdef __cplusplus
  93 }
  94 #endif
  95
  96 #endif  /* RC_INVOKED */
  97
  98 #endif /* Not _MALLOC_H_ */