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/*===---- mm_malloc.h - Allocating and Freeing Aligned Memory Blocks -------===
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*===-----------------------------------------------------------------------===
*/
#ifndef __MM_MALLOC_H
#define __MM_MALLOC_H
#include <errno.h>
#include <stdlib.h>
static inline void *__attribute__((__always_inline__, __nodebug__)) _mm_malloc(size_t size, size_t align)
{
if (align & (align - 1)) {
errno = EINVAL;
return 0;
}
if (!size)
return 0;
if (align < 2 * sizeof(void *))
align = 2 * sizeof(void *);
void *mallocedMemory = malloc(size + align);
if (!mallocedMemory)
return 0;
void *alignedMemory = (void *)(((size_t)mallocedMemory + align) & ~((size_t)align - 1));
((void **)alignedMemory)[-1] = mallocedMemory;
return alignedMemory;
}
static inline void __attribute__((__always_inline__, __nodebug__)) _mm_free(void *p)
{
if (p)
free(((void **)p)[-1]);
}
#endif /* __MM_MALLOC_H */
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