malloc.h File Reference

#include <corecrt.h>
#include <corecrt_malloc.h>

Go to the source code of this file.

Classes
struct	_heapinfo

Macros
#define	_INC_MALLOC
#define	_HEAP_MAXREQ   0xFFFFFFE0
#define	_HEAPEMPTY   (-1)
#define	_HEAPOK   (-2)
#define	_HEAPBADBEGIN   (-3)
#define	_HEAPBADNODE   (-4)
#define	_HEAPEND   (-5)
#define	_HEAPBADPTR   (-6)
#define	_FREEENTRY   0
#define	_USEDENTRY   1
#define	_mm_free(a)   _aligned_free(a)
#define	_mm_malloc(a, b)   _aligned_malloc(a, b)
#define	_ALLOCA_S_THRESHOLD   1024
#define	_ALLOCA_S_STACK_MARKER   0xCCCC
#define	_ALLOCA_S_HEAP_MARKER   0xDDDD
#define	_ALLOCA_S_MARKER_SIZE   8
#define	_malloca(size)
#define	alloca   _alloca

Typedefs
typedef struct _heapinfo	_HEAPINFO

Functions
_Ret_notnull_	_Post_writable_byte_size_ (_Size) void *__cdecl _alloca(_In_ size_t _Size)
_ACRTIMP intptr_t __cdecl	_get_heap_handle (void)
_Check_return_ _DCRTIMP int __cdecl	_heapmin (void)
_ACRTIMP int __cdecl	_heapwalk (_Inout_ _HEAPINFO *_EntryInfo)
_Check_return_ _DCRTIMP int __cdecl	_heapchk (void)
_DCRTIMP int __cdecl	_resetstkoflw (void)
	_STATIC_ASSERT (sizeof(unsigned int)<=_ALLOCA_S_MARKER_SIZE)
__inline void *	_MarkAllocaS (_Out_opt_ __crt_typefix(unsigned int *) void *_Ptr, unsigned int _Marker)
__inline size_t	_MallocaComputeSize (size_t _Size)
__inline void __CRTDECL	_freea (_Pre_maybenull_ _Post_invalid_ void *_Memory)

Macro Definition Documentation

#define _ALLOCA_S_HEAP_MARKER   0xDDDD

#define _ALLOCA_S_MARKER_SIZE   8

#define _ALLOCA_S_STACK_MARKER   0xCCCC

#define _ALLOCA_S_THRESHOLD   1024

#define _FREEENTRY   0

#define _HEAP_MAXREQ   0xFFFFFFE0

#define _HEAPBADBEGIN   (-3)

#define _HEAPBADNODE   (-4)

#define _HEAPBADPTR   (-6)

#define _HEAPEMPTY   (-1)

#define _HEAPEND   (-5)

#define _HEAPOK   (-2)

#define _INC_MALLOC

#define _malloca

(

size

)

Value:

__pragma(warning(suppress: 6255 6386))                                             \
        (_MallocaComputeSize(size) != 0                                                    \
            ? (((_MallocaComputeSize(size) <= _ALLOCA_S_THRESHOLD)                         \
                ? _MarkAllocaS(_alloca(_MallocaComputeSize(size)), _ALLOCA_S_STACK_MARKER) \
                : _MarkAllocaS(malloc(_MallocaComputeSize(size)), _ALLOCA_S_HEAP_MARKER))) \
            : NULL)

#define _mm_free

(

a

)

_aligned_free(a)

#define _mm_malloc	(		a,
			b
	)		_aligned_malloc(a, b)

#define _USEDENTRY   1

#define alloca   _alloca

Typedef Documentation

typedef struct _heapinfo _HEAPINFO

Function Documentation

__inline void __CRTDECL _freea

(

_Pre_maybenull_ _Post_invalid_ void *

_Memory

)

    {
        unsigned int _Marker;
        if (_Memory)
        {
            _Memory = (char*)_Memory - _ALLOCA_S_MARKER_SIZE;
            _Marker = *(unsigned int*)_Memory;
            if (_Marker == _ALLOCA_S_HEAP_MARKER)
            {
                free(_Memory);
            }
            #ifdef _ASSERTE
            else if (_Marker != _ALLOCA_S_STACK_MARKER)
            {
                _ASSERTE(("Corrupted pointer passed to _freea" && 0));
            }
            #endif
        }
    }

_ACRTIMP intptr_t __cdecl _get_heap_handle

(

void

)

_Check_return_ _DCRTIMP int __cdecl _heapchk

(

void

)

_Check_return_ _DCRTIMP int __cdecl _heapmin

(

void

)

_ACRTIMP int __cdecl _heapwalk

(

_Inout_ _HEAPINFO *

_EntryInfo

)

__inline size_t _MallocaComputeSize

(

size_t

_Size

)

    {
        size_t _MarkedSize = _Size + _ALLOCA_S_MARKER_SIZE;
        return _MarkedSize > _Size ? _MarkedSize : 0;
    }

__inline void* _MarkAllocaS	(	_Out_opt_ __crt_typefix(unsigned int *) void *	_Ptr,
		unsigned int	_Marker
	)

    {
        if (_Ptr)
        {
            *((unsigned int*)_Ptr) = _Marker;
            _Ptr = (char*)_Ptr + _ALLOCA_S_MARKER_SIZE;
        }
        return _Ptr;
    }

_Ret_notnull_ _Post_writable_byte_size_

(

_Size

)

_DCRTIMP int __cdecl _resetstkoflw

(

void

)

_STATIC_ASSERT

(

sizeof(unsigned int)<=

_ALLOCA_S_MARKER_SIZE

)