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 /* maximum size of a user request for memory */
  47 #define _HEAP_MAXREQ  0xFFFFFFE0
  48
  49 #ifdef  __cplusplus
  50 extern "C" {
  51 #endif
  52 /*
  53    The _heap* memory allocation functions are supported on NT
  54    but not W9x. On latter, they always set errno to ENOSYS.
  55 */
  56 _CRTIMP int __cdecl __MINGW_NOTHROW _heapwalk (_HEAPINFO*);
  57 #ifdef __GNUC__
  58 #define _alloca(x) __builtin_alloca((x))
  59 #endif
  60
  61 #ifndef _NO_OLDNAMES
  62 _CRTIMP int __cdecl __MINGW_NOTHROW heapwalk (_HEAPINFO*);
  63 #ifdef __GNUC__
  64 #define alloca(x) __builtin_alloca((x))
  65 #endif
  66 #endif  /* Not _NO_OLDNAMES */
  67
  68 _CRTIMP int __cdecl __MINGW_NOTHROW _heapchk (void);    /* Verify heap integrety. */
  69 _CRTIMP int __cdecl __MINGW_NOTHROW _heapmin (void);    /* Return unused heap to the OS. */
  70 _CRTIMP int __cdecl __MINGW_NOTHROW _heapset (unsigned int);
  71
  72 _CRTIMP size_t __cdecl __MINGW_NOTHROW _msize (void*);
  73 _CRTIMP size_t __cdecl __MINGW_NOTHROW _get_sbh_threshold (void);
  74 _CRTIMP int __cdecl __MINGW_NOTHROW _set_sbh_threshold (size_t);
  75 _CRTIMP void* __cdecl __MINGW_NOTHROW _expand (void*, size_t);
  76
  77 /* These require msvcr70.dll or higher. */
  78 #if __MSVCRT_VERSION__ >= 0x0700
  79 _CRTIMP void * __cdecl __MINGW_NOTHROW _aligned_offset_malloc(size_t, size_t, size_t);
  80 _CRTIMP void * __cdecl __MINGW_NOTHROW _aligned_offset_realloc(void*, size_t, size_t, size_t);
  81 _CRTIMP void * __cdecl __MINGW_NOTHROW _aligned_offset_recalloc(void*, size_t, size_t, size_t, size_t);
  82
  83 _CRTIMP void * __cdecl __MINGW_NOTHROW _aligned_malloc (size_t, size_t);
  84 _CRTIMP void * __cdecl __MINGW_NOTHROW _aligned_realloc (void*, size_t, size_t);
  85 _CRTIMP void* __cdecl __MINGW_NOTHROW _aligned_recalloc(void*, size_t, size_t, size_t);
  86 _CRTIMP void __cdecl __MINGW_NOTHROW _aligned_free (void*);
  87 #endif /* __MSVCRT_VERSION__ >= 0x0700 */
  88
  89 /* These require libmingwex.a. */
  90 void * __cdecl __MINGW_NOTHROW __mingw_aligned_offset_malloc (size_t, size_t, size_t);
  91 void * __cdecl __MINGW_NOTHROW __mingw_aligned_offset_realloc (void*, size_t, size_t, size_t);
  92
  93 void * __cdecl __MINGW_NOTHROW __mingw_aligned_malloc (size_t, size_t);
  94 void * __cdecl __MINGW_NOTHROW __mingw_aligned_realloc (void*, size_t, size_t);
  95 void __cdecl __MINGW_NOTHROW __mingw_aligned_free (void*);
  96
  97 #ifdef __cplusplus
  98 }
  99 #endif
 100
 101 #endif  /* RC_INVOKED */
 102
 103 #endif /* Not _MALLOC_H_ */