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/*
* Copyright 2011-2015 Blender Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "util_aligned_malloc.h"
#include "util_guarded_allocator.h"
#include <cassert>
/* Adopted from Libmv. */
#if !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__NetBSD__)
/* Needed for memalign on Linux and _aligned_alloc on Windows. */
# ifdef FREE_WINDOWS
/* Make sure _aligned_malloc is included. */
# ifdef __MSVCRT_VERSION__
# undef __MSVCRT_VERSION__
# endif
# define __MSVCRT_VERSION__ 0x0700
# endif /* FREE_WINDOWS */
# include <malloc.h>
#else
/* Apple's malloc is 16-byte aligned, and does not have malloc.h, so include
* stdilb instead.
*/
# include <cstdlib>
#endif
CCL_NAMESPACE_BEGIN
void *util_aligned_malloc(size_t size, int alignment)
{
#ifdef WITH_BLENDER_GUARDEDALLOC
return MEM_mallocN_aligned(size, alignment, "Cycles Aligned Alloc");
#endif
#ifdef _WIN32
return _aligned_malloc(size, alignment);
#elif defined(__APPLE__)
/* On Mac OS X, both the heap and the stack are guaranteed 16-byte aligned so
* they work natively with SSE types with no further work.
*/
assert(alignment == 16);
return malloc(size);
#elif defined(__FreeBSD__) || defined(__NetBSD__)
void *result;
if (posix_memalign(&result, alignment, size)) {
/* Non-zero means allocation error
* either no allocation or bad alignment value.
*/
return NULL;
}
return result;
#else /* This is for Linux. */
return memalign(alignment, size);
#endif
}
void util_aligned_free(void *ptr)
{
#if defined(WITH_BLENDER_GUARDEDALLOC)
if(ptr != NULL) {
MEM_freeN(ptr);
}
#elif defined(_WIN32)
_aligned_free(ptr);
#else
free(ptr);
#endif
}
CCL_NAMESPACE_END
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