void * _aligned_offset_recalloc_dbg( void *memblock, size_t num, size_t size, size_t alignment, size_t offset, const char *filename, int linenumber );
The current memory block pointer.
Number of elements.
Length in bytes of each element.
The alignment value, which must be an integer power of 2.
The offset into the memory allocation to force the alignment.
Pointer to the name of the source file that requested the
realloc operation or NULL.
Line number in the source file where the
realloc operation was requested or NULL.
_aligned_offset_recalloc_dbg returns a void pointer to the reallocated (and possibly moved) memory block. The return value is
NULL if the size is zero and the buffer argument is not
NULL, or if there is not enough available memory to expand the block to the given size. In the first case, the original block is freed. In the second case, the original block is unchanged. The return value points to a storage space that is guaranteed to be suitably aligned for storage of any type of object. To get a pointer to a type other than void, use a type cast on the return value.
_aligned_offset_realloc_dbg is a debug version of the _aligned_offset_recalloc function. When _DEBUG is not defined, each call to
_aligned_offset_recalloc_dbg is reduced to a call to _
aligned_offset_recalloc. Both _
_aligned_offset_recalloc_dbg reallocate a memory block in the base heap, but
_aligned_offset_recalloc_dbg accommodates several debugging features: buffers on either side of the user portion of the block to test for leaks, a block type parameter to track specific allocation types, and
linenumber information to determine the origin of allocation requests.
_aligned_offset_realloc_dbg reallocates the specified memory block with slightly more space than the requested
newSize might be greater or less than the size of the originally allocated memory block. The additional space is used by the debug heap manager to link the debug memory blocks and to provide the application with debug header information and overwrite buffers. The reallocation might result in moving the original memory block to a different location in the heap, as well as changing the size of the memory block. If the memory block is moved, the contents of the original block are overwritten.
This function sets
ENOMEM if the memory allocation failed or if the requested size (
size) was greater than
_HEAP_MAXREQ. For more information about
errno, see errno, _doserrno, _sys_errlist, and _sys_nerr. Also,
_aligned_offset_recalloc_dbg validates its parameters. If
alignment is not a power of 2 or if
offset is greater than or equal to the requested size and nonzero, this function invokes the invalid parameter handler, as described in Parameter Validation. If execution is allowed to continue, this function returns
NULL and sets
For information about how memory blocks are allocated, initialized, and managed in the debug version of the base heap, see CRT Debug Heap Details. For information about the allocation block types and how they are used, see Types of blocks on the debug heap. For information about the differences between calling a standard heap function and its debug version in a debug build of an application, see Debug Versions of Heap Allocation Functions.
Not applicable. To call the standard C function, use
PInvoke. For more information, see Platform Invoke Examples.