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