_aligned_msize
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Returns the size of a memory block allocated in the heap.
size_t _msize( void *memblock, size_t alignment, size_t offset );
Parameters
[in] memblock
Pointer to the memory block.
[in] alignment
The alignment value, which must be an integer power of 2.
[in] offset
The offset into the memory allocation to force the alignment.
Returns the size (in bytes) as an unsigned integer.
The _aligned_msize function returns the size, in bytes, of the memory block allocated by a call to _aligned_malloc or _aligned_realloc. The alignment and offset values must be the same as the values passed to the function that allocated the block.
When the application is linked with a debug version of the C run-time libraries, _aligned_msize resolves to _aligned_msize_dbg. For more information about how the heap is managed during the debugging process, see The CRT Debug Heap.
This function validates its parameter. If memblock is a null pointer or alignment is not a power of 2, _msize invokes an invalid parameter handler, as described in Parameter Validation. If the error is handled, the function sets errno to EINVAL and returns -1.
| Routine | Required header |
|---|---|
_msize | <malloc.h> |
For more compatibility information, see Compatibility in the Introduction.
All versions of the C run-time libraries.
Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.