1/* Emulate getpagesize on systems that lack it. 2 Copyright (C) 1986, 1992, 1995, 2001, 2002, 2003, 2004, 3 2005, 2006, 2007 Free Software Foundation, Inc. 4 5This file is part of GNU Emacs. 6 7GNU Emacs is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 2, or (at your option) 10any later version. 11 12GNU Emacs is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17You should have received a copy of the GNU General Public License 18along with GNU Emacs; see the file COPYING. If not, write to 19the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20Boston, MA 02110-1301, USA. */ 21 22#ifndef HAVE_GETPAGESIZE 23 24# ifdef VMS 25# define getpagesize() 512 26# endif 27 28# ifdef HAVE_UNISTD_H 29# include <unistd.h> 30# endif 31 32# ifdef _SC_PAGESIZE 33# define getpagesize() sysconf(_SC_PAGESIZE) 34# else /* no _SC_PAGESIZE */ 35# ifdef HAVE_SYS_PARAM_H 36# include <sys/param.h> 37# ifdef EXEC_PAGESIZE 38# define getpagesize() EXEC_PAGESIZE 39# else /* no EXEC_PAGESIZE */ 40# ifdef NBPG 41# define getpagesize() NBPG * CLSIZE 42# ifndef CLSIZE 43# define CLSIZE 1 44# endif /* no CLSIZE */ 45# else /* no NBPG */ 46# ifdef NBPC 47# define getpagesize() NBPC 48# else /* no NBPC */ 49# ifdef PAGESIZE 50# define getpagesize() PAGESIZE 51# endif /* PAGESIZE */ 52# endif /* no NBPC */ 53# endif /* no NBPG */ 54# endif /* no EXEC_PAGESIZE */ 55# else /* no HAVE_SYS_PARAM_H */ 56# define getpagesize() 8192 /* punt totally */ 57# endif /* no HAVE_SYS_PARAM_H */ 58# endif /* no _SC_PAGESIZE */ 59 60#endif /* no HAVE_GETPAGESIZE */ 61 62/* arch-tag: ff6206e3-97e2-4763-923a-e84bf28eabbc 63 (do not change this comment) */ 64