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/* $XFree86: xc/lib/Xaw/OS.c,v 1.2 1998/12/06 11:24:32 dawes Exp $ */
/* Some OS-dependent utility code */
#include <X11/Xosdefs.h>
#include <X11/IntrinsicP.h>
#include "Private.h"
#ifndef X_NOT_POSIX
#include <unistd.h> /* for sysconf(), and getpagesize() */
#endif
#if defined(linux)
#include <asm/page.h> /* for PAGE_SIZE */
#define HAS_GETPAGESIZE
#define HAS_SC_PAGESIZE /* _SC_PAGESIZE may be an enum for Linux */
#endif
#if defined(CSRG_BASED)
#define HAS_GETPAGESIZE
#endif
#if defined(sun)
#define HAS_GETPAGESIZE
#endif
int
_XawGetPageSize()
{
static int pagesize = -1;
if (pagesize != -1)
return pagesize;
/* Try each supported method in the preferred order */
#if defined(_SC_PAGESIZE) || defined(HAS_SC_PAGESIZE)
pagesize = sysconf(_SC_PAGESIZE);
#endif
#ifdef _SC_PAGE_SIZE
if (pagesize == -1)
pagesize = sysconf(_SC_PAGE_SIZE);
#endif
#ifdef HAS_GETPAGESIZE
if (pagesize == -1)
pagesize = getpagesize();
#endif
#ifdef PAGE_SIZE
if (pagesize == -1)
pagesize = PAGE_SIZE;
#endif
if (pagesize == -1)
pagesize = 0;
return pagesize;
}
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