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/* Emulation of getpagesize() for systems that need it.
Copyright (C) 1991 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 of the License, 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
#if defined (HAVE_UNISTD_H)
# include <unistd.h>
# if defined (_SC_PAGESIZE)
# define getpagesize() sysconf(_SC_PAGESIZE)
# else
# if defined (_SC_PAGE_SIZE)
# define getpagesize() sysconf(_SC_PAGE_SIZE)
# endif /* _SC_PAGE_SIZE */
# endif /* _SC_PAGESIZE */
#endif
#if !defined (getpagesize)
# ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
# endif
# if defined (PAGESIZE)
# define getpagesize() PAGESIZE
# else /* !PAGESIZE */
# if defined (EXEC_PAGESIZE)
# define getpagesize() EXEC_PAGESIZE
# else /* !EXEC_PAGESIZE */
# if defined (NBPG)
# if !defined (CLSIZE)
# define CLSIZE 1
# endif /* !CLSIZE */
# define getpagesize() (NBPG * CLSIZE)
# else /* !NBPG */
# if defined (NBPC)
# define getpagesize() NBPC
# endif /* NBPC */
# endif /* !NBPG */
# endif /* !EXEC_PAGESIZE */
# endif /* !PAGESIZE */
#endif /* !getpagesize */
#if !defined (getpagesize)
# define getpagesize() 4096 /* Just punt and use reasonable value */
#endif
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