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/* Some OS-dependent utility code */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <X11/Xosdefs.h>
#include <X11/IntrinsicP.h>
#include "Private.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h> /* for sysconf(), and getpagesize() */
#endif
#if defined(_WIN32) && !defined(__CYGWIN__)
/* AC_CHECK_FUNCS([getpagesize]) may report a false positive for
getpagesize() when using MinGW gcc, since it's present in libgcc.a */
#undef HAVE_GETPAGESIZE
#endif
#if defined(linux)
/* kernel header doesn't work with -ansi */
/* #include <asm/page.h> *//* for PAGE_SIZE */
#define HAS_SC_PAGESIZE /* _SC_PAGESIZE may be an enum for Linux */
#endif
int
_XawGetPageSize(void)
{
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 = (int) sysconf(_SC_PAGESIZE);
#endif
#ifdef _SC_PAGE_SIZE
if (pagesize == -1)
pagesize = (int) sysconf(_SC_PAGE_SIZE);
#endif
#ifdef HAVE_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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