CODEWITHSUNDEEP
c++windowsmallocidentifier
Jbrownstone
Jbrownstone

Reputation: 31

valloc identifier not found on Windows

I have to modify a Mac code to make it work on Windows, or at least compile for now, but there seems to be a problem with valloc.

It says : error C3861: 'valloc': identifier not found.

This is how it's used :

#ifndef _XOPEN_SOURCE_EXTENDED 1
#define _XOPEN_SOURCE_EXTENDED 1
#endif
#include <stdlib.h>

#include <queue>
#include "ArrayArithmetic.h"
#include "MessageObject.h"

#if __SSE__
// allocate memory aligned to 16-bytes memory boundary
#define ALLOC_ALIGNED_BUFFER(_numBytes) (float *) _mm_malloc(_numBytes, 16)
#define FREE_ALIGNED_BUFFER(_buffer) _mm_free(_buffer)
#else
// NOTE(mhroth): valloc seems to work well, but is deprecated!
#define ALLOC_ALIGNED_BUFFER(_numBytes) (float *) valloc(_numBytes)
#define FREE_ALIGNED_BUFFER(_buffer) free(_buffer)
#endif

I have the good include, or at least I think so. No, I really don't see where it comes from, is valloc available on Windows?

I work on windows 8.1 with Visual Studio 2010.

Upvotes: 0

Views: 1333

Answers (1)

Anthony
Anthony

Reputation: 12407

If Windows is detected, use the _aligned_malloc/_aligned_free functions. 

#ifdef _WIN32

#define ALLOC_ALIGNED_BUFFER(_numBytes) ((float *)_aligned_malloc (_numBytes, 16))
#define FREE_ALIGNED_BUFFER(_buffer) _aligned_free(_buffer)

#elif __SSE__
// allocate memory aligned to 16-bytes memory boundary
#define ALLOC_ALIGNED_BUFFER(_numBytes) (float *) _mm_malloc(_numBytes, 16)
#define FREE_ALIGNED_BUFFER(_buffer) _mm_free(_buffer)
#else
// NOTE(mhroth): valloc seems to work well, but is deprecated!
#define ALLOC_ALIGNED_BUFFER(_numBytes) (float *) valloc(_numBytes)
#define FREE_ALIGNED_BUFFER(_buffer) free(_buffer)
#endif

Upvotes: 1

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