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

Include dependency graph for malloc.h:

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)

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)

_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

◆ _ALLOCA_S_HEAP_MARKER

#define _ALLOCA_S_HEAP_MARKER 0xDDDD

Definition at line 81 of file malloc.h.

◆ _ALLOCA_S_MARKER_SIZE

#define _ALLOCA_S_MARKER_SIZE 8

Definition at line 86 of file malloc.h.

◆ _ALLOCA_S_STACK_MARKER

#define _ALLOCA_S_STACK_MARKER 0xCCCC

Definition at line 80 of file malloc.h.

◆ _ALLOCA_S_THRESHOLD

#define _ALLOCA_S_THRESHOLD 1024

Definition at line 79 of file malloc.h.

◆ _FREEENTRY

#define _FREEENTRY 0

Definition at line 39 of file malloc.h.

◆ _HEAP_MAXREQ

#define _HEAP_MAXREQ 0xFFFFFFE0

Definition at line 27 of file malloc.h.

◆ _HEAPBADBEGIN

#define _HEAPBADBEGIN (-3)

Definition at line 35 of file malloc.h.

◆ _HEAPBADNODE

#define _HEAPBADNODE (-4)

Definition at line 36 of file malloc.h.

◆ _HEAPBADPTR

#define _HEAPBADPTR (-6)

Definition at line 38 of file malloc.h.

◆ _HEAPEMPTY

#define _HEAPEMPTY (-1)

Definition at line 33 of file malloc.h.

◆ _HEAPEND

#define _HEAPEND (-5)

Definition at line 37 of file malloc.h.

◆ _HEAPOK

#define _HEAPOK (-2)

Definition at line 34 of file malloc.h.

◆ _INC_MALLOC

#define _INC_MALLOC

Definition at line 10 of file malloc.h.

◆ _malloca

#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)

Definition at line 133 of file malloc.h.

◆ _mm_free

#define _mm_free ( a ) _aligned_free(a)

Definition at line 49 of file malloc.h.

◆ _mm_malloc

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

Definition at line 50 of file malloc.h.

◆ _USEDENTRY

#define _USEDENTRY 1

Definition at line 40 of file malloc.h.

Typedef Documentation

◆ _HEAPINFO

typedef struct _heapinfo _HEAPINFO

Function Documentation

◆ _freea()

__inline void __CRTDECL _freea ( _Pre_maybenull_ _Post_invalid_ void * _Memory )

Definition at line 153 of file malloc.h.

    {
        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
        }
    }

◆ _get_heap_handle()

_ACRTIMP intptr_t __cdecl _get_heap_handle ( void )

Definition at line 367 of file heap.c.

{
    return (intptr_t)heap;
}

◆ _heapmin()

_Check_return_ _DCRTIMP int __cdecl _heapmin ( void )

Definition at line 133 of file malloc.c.

{
    if (!HeapCompact(GetProcessHeap(), 0))
        return -1;
    return 0;
}

◆ _MallocaComputeSize()

__inline size_t _MallocaComputeSize ( size_t _Size )

Definition at line 106 of file malloc.h.

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

◆ _MarkAllocaS()

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

Definition at line 96 of file malloc.h.

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

◆ _Post_writable_byte_size_()

_Ret_notnull_ _Post_writable_byte_size_ ( _Size )

◆ _resetstkoflw()

_DCRTIMP int __cdecl _resetstkoflw ( void )

Definition at line 38 of file stack.c.

{
    int stack_addr;
    DWORD oldprot;
 
    /* causes stack fault that updates NtCurrentTeb()->Tib.StackLimit */
    return VirtualProtect(&stack_addr, 1, PAGE_GUARD|PAGE_READWRITE, &oldprot);
}

◆ _STATIC_ASSERT()

_STATIC_ASSERT ( sizeof(unsigned int)<= _ALLOCA_S_MARKER_SIZE )

Classes

Macros

Typedefs

Functions