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/* Allocate memory on a page boundary.
Copyright (C) 1991, 1992 Free Software Foundation, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA.
The author may be reached (Email) at the address mike@ai.mit.edu,
or (US mail) as Mike Haertel c/o Free Software Foundation. */
#include <stdlib.h>
#include "malloc.h"
#ifdef emacs
#include "config.h"
#endif
#ifdef __GNU_LIBRARY__
extern size_t __getpagesize __P ((void));
#else
#ifndef USG
extern size_t getpagesize __P ((void));
#define __getpagesize() getpagesize()
#else
#include <sys/param.h>
#ifdef EXEC_PAGESIZE
#define __getpagesize() EXEC_PAGESIZE
#else /* No EXEC_PAGESIZE. */
#ifdef NBPG
#ifndef CLSIZE
#define CLSIZE 1
#endif /* No CLSIZE. */
#define __getpagesize() (NBPG * CLSIZE)
#else /* No NBPG. */
#define __getpagesize() NBPC
#endif /* NBPG. */
#endif /* EXEC_PAGESIZE. */
#endif /* USG. */
#endif
static size_t pagesize;
__ptr_t
valloc (size)
size_t size;
{
if (pagesize == 0)
pagesize = __getpagesize ();
return memalign (pagesize, size);
}
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