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- /*
- * Copyright (c) 2003 Gunnar Ritter
- *
- * This software is provided 'as-is', without any express or implied
- * warranty. In no event will the authors be held liable for any damages
- * arising from the use of this software.
- *
- * Permission is granted to anyone to use this software for any purpose,
- * including commercial applications, and to alter it and redistribute
- * it freely, subject to the following restrictions:
- *
- * 1. The origin of this software must not be misrepresented; you must not
- * claim that you wrote the original software. If you use this software
- * in a product, an acknowledgment in the product documentation would be
- * appreciated but is not required.
- *
- * 2. Altered source versions must be plainly marked as such, and must not be
- * misrepresented as being the original software.
- *
- * 3. This notice may not be removed or altered from any source distribution.
- */
- /* Sccsid @(#)memalign.c 1.7 (gritter) 1/22/06 */
- #if defined (__FreeBSD__) || defined (__dietlibc__) || defined (_AIX) || \
- defined (__NetBSD__) || defined (__OpenBSD__) || \
- defined (__DragonFly__) || defined (__APPLE__)
- /*
- * FreeBSD malloc(3) promises to page-align the return of malloc() calls
- * if size is at least a page. This serves for a poor man's memalign()
- * implementation that matches our needs.
- */
- #include <unistd.h>
- #include <stdlib.h>
- #include "memalign.h"
- void *
- memalign(size_t alignment, size_t size)
- {
- static long pagesize;
- if (pagesize == 0)
- pagesize = sysconf(_SC_PAGESIZE);
- if (alignment != pagesize)
- return NULL;
- if (size < pagesize)
- size = pagesize;
- return malloc(size);
- }
- #endif /* __FreeBSD__ || __dietlibc__ || _AIX || __NetBSD__ || __OpenBSD__ ||
- __DragonFly__ || __APPLE__ */
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