1/* Emulate getpagesize on systems that lack it. 2 Copyright (C) 1999, 2000, 2004 Free Software Foundation, Inc. 3 4 This program is free software; you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 2, or (at your option) 7 any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program; if not, write to the Free Software 16 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 17 USA. */ 18 19#ifndef HAVE_GETPAGESIZE 20 21#ifdef HAVE_UNISTD_H 22# include <unistd.h> 23#endif 24 25#if !defined getpagesize && defined _SC_PAGESIZE 26# if !(defined VMS && __VMS_VER < 70000000) 27# define getpagesize() sysconf (_SC_PAGESIZE) 28# endif 29#endif 30 31#if !defined getpagesize && defined VMS 32# ifdef __ALPHA 33# define getpagesize() 8192 34# else 35# define getpagesize() 512 36# endif 37#endif 38 39/* This is for BeOS. */ 40#if !defined getpagesize && HAVE_OS_H 41# include <OS.h> 42# if defined B_PAGE_SIZE 43# define getpagesize() B_PAGE_SIZE 44# endif 45#endif 46 47#if !defined getpagesize && HAVE_SYS_PARAM_H 48# include <sys/param.h> 49# ifdef EXEC_PAGESIZE 50# define getpagesize() EXEC_PAGESIZE 51# else 52# ifdef NBPG 53# ifndef CLSIZE 54# define CLSIZE 1 55# endif 56# define getpagesize() (NBPG * CLSIZE) 57# else 58# ifdef NBPC 59# define getpagesize() NBPC 60# endif 61# endif 62# endif 63#endif 64 65#endif /* not HAVE_GETPAGESIZE */ 66