win32/include/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 <_mingw.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 void __static_assert_t(int [(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 #endif
 108
 109 #if !defined(RC_INVOKED)
 110   static __inline void *_MarkAllocaS(void *_Ptr,unsigned int _Marker) {
 111     if(_Ptr) {
 112       *((unsigned int*)_Ptr) = _Marker;
 113       _Ptr = (char*)_Ptr + _ALLOCA_S_MARKER_SIZE;
 114     }
 115     return _Ptr;
 116   }
 117 #endif
 118
 119 #undef _malloca
 120 #define _malloca(size) \
 121   ((((size) + _ALLOCA_S_MARKER_SIZE) <= _ALLOCA_S_THRESHOLD) ? \
 122     _MarkAllocaS(_alloca((size) + _ALLOCA_S_MARKER_SIZE),_ALLOCA_S_STACK_MARKER) : \
 123     _MarkAllocaS(malloc((size) + _ALLOCA_S_MARKER_SIZE),_ALLOCA_S_HEAP_MARKER))
 124 #undef _FREEA_INLINE
 125 #define _FREEA_INLINE
 126
 127 #ifndef RC_INVOKED
 128 #undef _freea
 129   static __inline void __cdecl _freea(void *_Memory) {
 130     unsigned int _Marker;
 131     if(_Memory) {
 132       _Memory = (char*)_Memory - _ALLOCA_S_MARKER_SIZE;
 133       _Marker = *(unsigned int *)_Memory;
 134       if(_Marker==_ALLOCA_S_HEAP_MARKER) {
 135         free(_Memory);
 136       }
 137 #ifdef _ASSERTE
 138       else if(_Marker!=_ALLOCA_S_STACK_MARKER) {
 139         _ASSERTE(("Corrupted pointer passed to _freea",0));
 140       }
 141 #endif
 142     }
 143   }
 144 #endif /* RC_INVOKED */
 145
 146 #ifndef NO_OLDNAMES
 147 #ifdef __GNUC__
 148 #undef alloca
 149 #define alloca(x) __builtin_alloca((x))
 150 #endif
 151 #endif
 152
 153 #ifdef HEAPHOOK
 154 #ifndef _HEAPHOOK_DEFINED
 155 #define _HEAPHOOK_DEFINED
 156   typedef int (__cdecl *_HEAPHOOK)(int,size_t,void *,void **);
 157 #endif
 158
 159   _CRTIMP _HEAPHOOK __cdecl _setheaphook(_HEAPHOOK _NewHook);
 160
 161 #define _HEAP_MALLOC 1
 162 #define _HEAP_CALLOC 2
 163 #define _HEAP_FREE 3
 164 #define _HEAP_REALLOC 4
 165 #define _HEAP_MSIZE 5
 166 #define _HEAP_EXPAND 6
 167 #endif
 168
 169 #ifdef __cplusplus
 170 }
 171 #endif
 172
 173 #pragma pack(pop)
 174
 175 #endif /* _MALLOC_H_ */