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/* Memory allocation aligned to system page boundaries.
Copyright (C) 2005 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 2, or (at your option)
any later version.
This program 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
General Public License for more details.
You should have received a copy of the GNU General Public
License along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
USA. */
#ifndef _PAGEALIGN_ALLOC_H
# define _PAGEALIGN_ALLOC_H
# include <stddef.h>
/* Allocate a block of memory of SIZE bytes, aligned on a system page
boundary.
If SIZE is not a multiple of the system page size, it will be rounded up
to the next multiple.
Return a pointer to the start of the memory block. Upon allocation failure,
return NULL and set errno. */
extern void *pagealign_alloc (size_t size);
/* Like pagealign_alloc, except it exits the program if the allocation
fails. */
extern void *pagealign_xalloc (size_t size);
/* Free a memory block.
PTR must be a non-NULL pointer returned by pagealign_alloc or
pagealign_xalloc. */
extern void pagealign_free (void *ptr);
#endif /* _PAGEALIGN_ALLOC_H */
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