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64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
/* Emulate getpagesize on systems that lack it.
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Copyright (C) 1999, 2000, 2004, 2005 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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USA. */
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#ifndef HAVE_GETPAGESIZE
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#include <unistd.h>
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#if !defined getpagesize && defined _SC_PAGESIZE
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# if !(defined VMS && __VMS_VER < 70000000)
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# define getpagesize() sysconf (_SC_PAGESIZE)
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# endif
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#endif
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#if !defined getpagesize && defined VMS
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# ifdef __ALPHA
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# define getpagesize() 8192
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# else
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# define getpagesize() 512
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# endif
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#endif
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/* This is for BeOS. */
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#if !defined getpagesize && HAVE_OS_H
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# include <OS.h>
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# if defined B_PAGE_SIZE
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# define getpagesize() B_PAGE_SIZE
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# endif
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#endif
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#if !defined getpagesize && HAVE_SYS_PARAM_H
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# include <sys/param.h>
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# ifdef EXEC_PAGESIZE
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# define getpagesize() EXEC_PAGESIZE
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# else
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# ifdef NBPG
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# ifndef CLSIZE
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# define CLSIZE 1
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# endif
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# define getpagesize() (NBPG * CLSIZE)
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# else
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# ifdef NBPC
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# define getpagesize() NBPC
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# endif
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# endif
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# endif
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#endif
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#endif /* not HAVE_GETPAGESIZE */
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