1 /* Emulate getpagesize on systems that lack it.
2 Copyright (C) 1999, 2000, 2004, 2005 Free Software Foundation, Inc.
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 3 of the License, or
7 (at your option) any later version.
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.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 #ifndef HAVE_GETPAGESIZE
21 #if !defined getpagesize && defined _SC_PAGESIZE
22 # if ! (defined __VMS && __VMS_VER < 70000000)
23 # define getpagesize() sysconf (_SC_PAGESIZE)
27 #if !defined getpagesize && defined __VMS
29 # define getpagesize() 8192
31 # define getpagesize() 512
35 /* This is for BeOS. */
36 #if !defined getpagesize && HAVE_OS_H
38 # if defined B_PAGE_SIZE
39 # define getpagesize() B_PAGE_SIZE
43 /* This is for AmigaOS4.0. */
44 #if !defined getpagesize && defined __amigaos4__
45 # define getpagesize() 2048
48 #if !defined getpagesize && HAVE_SYS_PARAM_H
49 # include <sys/param.h>
51 # define getpagesize() EXEC_PAGESIZE
57 # define getpagesize() (NBPG * CLSIZE)
60 # define getpagesize() NBPC
66 #endif /* not HAVE_GETPAGESIZE */