include/crt/malloc.h

   1 /**
   2  * This file has no copyright assigned and is placed in the Public Domain.
   3  * This file is part of the w64 mingw-runtime package.
   4  * No warranty is given; refer to the file DISCLAIMER within this package.
   5  */
   6 #ifndef _MALLOC_H_
   7 #define _MALLOC_H_
   8
   9 #include <crtdefs.h>
  10
  11 #pragma pack(push,_CRT_PACKING)
  12
  13 #ifndef _MM_MALLOC_H_INCLUDED
  14 #define _MM_MALLOC_H_INCLUDED
  15 #endif
  16
  17 #ifdef __cplusplus
  18 extern "C" {
  19 #endif
  20
  21 #ifdef _WIN64
  22 #define _HEAP_MAXREQ 0xFFFFFFFFFFFFFFE0
  23 #else
  24 #define _HEAP_MAXREQ 0xFFFFFFE0
  25 #endif
  26
  27 #ifndef _STATIC_ASSERT
  28 #define _STATIC_ASSERT(expr) extern char (*static_assert(void)) [(expr) ? 1 : -1]
  29 #endif
  30
  31 /* Return codes for _heapwalk()  */
  32 #define _HEAPEMPTY (-1)
  33 #define _HEAPOK (-2)
  34 #define _HEAPBADBEGIN (-3)
  35 #define _HEAPBADNODE (-4)
  36 #define _HEAPEND (-5)
  37 #define _HEAPBADPTR (-6)
  38
  39 /* Values for _heapinfo.useflag */
  40 #define _FREEENTRY 0
  41 #define _USEDENTRY 1
  42
  43 #ifndef _HEAPINFO_DEFINED
  44 #define _HEAPINFO_DEFINED
  45  /* The structure used to walk through the heap with _heapwalk.  */
  46   typedef struct _heapinfo {
  47     int *_pentry;
  48     size_t _size;
  49     int _useflag;
  50   } _HEAPINFO;
  51 #endif
  52
  53   extern unsigned int _amblksiz;
  54
  55 #define _mm_free(a) _aligned_free(a)
  56 #define _mm_malloc(a,b) _aligned_malloc(a,b)
  57
  58 #ifndef _CRT_ALLOCATION_DEFINED
  59 #define _CRT_ALLOCATION_DEFINED
  60   void *__cdecl calloc(size_t _NumOfElements,size_t _SizeOfElements);
  61   void __cdecl free(void *_Memory);
  62   void *__cdecl malloc(size_t _Size);
  63   void *__cdecl realloc(void *_Memory,size_t _NewSize);
  64   _CRTIMP void *__cdecl _recalloc(void *_Memory,size_t _Count,size_t _Size);
  65   /*    _CRTIMP void __cdecl _aligned_free(void *_Memory);
  66   _CRTIMP void *__cdecl _aligned_malloc(size_t _Size,size_t _Alignment); */
  67   _CRTIMP void *__cdecl _aligned_offset_malloc(size_t _Size,size_t _Alignment,size_t _Offset);
  68   _CRTIMP void *__cdecl _aligned_realloc(void *_Memory,size_t _Size,size_t _Alignment);
  69   _CRTIMP void *__cdecl _aligned_recalloc(void *_Memory,size_t _Count,size_t _Size,size_t _Alignment);
  70   _CRTIMP void *__cdecl _aligned_offset_realloc(void *_Memory,size_t _Size,size_t _Alignment,size_t _Offset);
  71   _CRTIMP void *__cdecl _aligned_offset_recalloc(void *_Memory,size_t _Count,size_t _Size,size_t _Alignment,size_t _Offset);
  72 #endif
  73
  74 #define _MAX_WAIT_MALLOC_CRT 60000
  75
  76   _CRTIMP int __cdecl _resetstkoflw (void);
  77   _CRTIMP unsigned long __cdecl _set_malloc_crt_max_wait(unsigned long _NewValue);
  78
  79   _CRTIMP void *__cdecl _expand(void *_Memory,size_t _NewSize);
  80   _CRTIMP size_t __cdecl _msize(void *_Memory);
  81 #ifdef __GNUC__
  82 #undef _alloca
  83 #define _alloca(x) __builtin_alloca((x))
  84 #else
  85   void *__cdecl _alloca(size_t _Size);
  86 #endif
  87   _CRTIMP size_t __cdecl _get_sbh_threshold(void);
  88   _CRTIMP int __cdecl _set_sbh_threshold(size_t _NewValue);
  89   _CRTIMP errno_t __cdecl _set_amblksiz(size_t _Value);
  90   _CRTIMP errno_t __cdecl _get_amblksiz(size_t *_Value);
  91   _CRTIMP int __cdecl _heapadd(void *_Memory,size_t _Size);
  92   _CRTIMP int __cdecl _heapchk(void);
  93   _CRTIMP int __cdecl _heapmin(void);
  94   _CRTIMP int __cdecl _heapset(unsigned int _Fill);
  95   _CRTIMP int __cdecl _heapwalk(_HEAPINFO *_EntryInfo);
  96   _CRTIMP size_t __cdecl _heapused(size_t *_Used,size_t *_Commit);
  97   _CRTIMP intptr_t __cdecl _get_heap_handle(void);
  98
  99 #define _ALLOCA_S_THRESHOLD 1024
 100 #define _ALLOCA_S_STACK_MARKER 0xCCCC
 101 #define _ALLOCA_S_HEAP_MARKER 0xDDDD
 102
 103 #if(defined(_X86_) && !defined(__x86_64))
 104 #define _ALLOCA_S_MARKER_SIZE 8
 105 #elif defined(__ia64__) || defined(__x86_64)
 106 #define _ALLOCA_S_MARKER_SIZE 16
 107 #elif defined(__arm__)
 108 #define _ALLOCA_S_MARKER_SIZE 8
 109 #endif
 110
 111 #if !defined(RC_INVOKED)
 112   static __inline void *_MarkAllocaS(void *_Ptr,unsigned int _Marker) {
 113     if(_Ptr) {
 114       *((unsigned int*)_Ptr) = _Marker;
 115       _Ptr = (char*)_Ptr + _ALLOCA_S_MARKER_SIZE;
 116     }
 117     return _Ptr;
 118   }
 119 #endif
 120
 121 #undef _malloca
 122 #define _malloca(size) \
 123   ((((size) + _ALLOCA_S_MARKER_SIZE) <= _ALLOCA_S_THRESHOLD) ? \
 124     _MarkAllocaS(_alloca((size) + _ALLOCA_S_MARKER_SIZE),_ALLOCA_S_STACK_MARKER) : \
 125     _MarkAllocaS(malloc((size) + _ALLOCA_S_MARKER_SIZE),_ALLOCA_S_HEAP_MARKER))
 126 #undef _FREEA_INLINE
 127 #define _FREEA_INLINE
 128
 129 #ifndef RC_INVOKED
 130 #undef _freea
 131   static __inline void __cdecl _freea(void *_Memory) {
 132     unsigned int _Marker;
 133     if(_Memory) {
 134       _Memory = (char*)_Memory - _ALLOCA_S_MARKER_SIZE;
 135       _Marker = *(unsigned int *)_Memory;
 136       if(_Marker==_ALLOCA_S_HEAP_MARKER) {
 137         free(_Memory);
 138       }
 139 #ifdef _ASSERTE
 140       else if(_Marker!=_ALLOCA_S_STACK_MARKER) {
 141         _ASSERTE(("Corrupted pointer passed to _freea",0));
 142       }
 143 #endif
 144     }
 145   }
 146 #endif /* RC_INVOKED */
 147
 148 #ifndef NO_OLDNAMES
 149 #define alloca _alloca
 150 #endif
 151
 152 #ifdef HEAPHOOK
 153 #ifndef _HEAPHOOK_DEFINED
 154 #define _HEAPHOOK_DEFINED
 155   typedef int (__cdecl *_HEAPHOOK)(int,size_t,void *,void **);
 156 #endif
 157
 158   _CRTIMP _HEAPHOOK __cdecl _setheaphook(_HEAPHOOK _NewHook);
 159
 160 #define _HEAP_MALLOC 1
 161 #define _HEAP_CALLOC 2
 162 #define _HEAP_FREE 3
 163 #define _HEAP_REALLOC 4
 164 #define _HEAP_MSIZE 5
 165 #define _HEAP_EXPAND 6
 166 #endif
 167
 168 #ifdef __cplusplus
 169 }
 170 #endif
 171
 172 #pragma pack(pop)
 173
 174 #endif /* _MALLOC_H_ */