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annotate src/getpagesize.h @ 5437:002cb5224e4f

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Merge with 21.5 trunk.
author Mats Lidell <matsl@xemacs.org>
date Mon, 15 Nov 2010 22:33:52 +0100
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children
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1 /* This file is part of XEmacs.
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2
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3 XEmacs is free software: you can redistribute it and/or modify it
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4 under the terms of the GNU General Public License as published by the
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5 Free Software Foundation, either version 3 of the License, or (at your
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6 option) any later version.
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7
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8 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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9 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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10 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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11 for more details.
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12
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13 You should have received a copy of the GNU General Public License
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14 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */
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15
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16 /* Synched up with: FSF 19.30. */
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17
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18 #ifndef INCLUDED_getpagesize_h_
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19 #define INCLUDED_getpagesize_h_
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20
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21 /* Emulate getpagesize on systems that lack it. */
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22
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23 #if 0
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24 #ifdef __hpux
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25 #include <sys/types.h>
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26 static size_t getpagesize() { return( 4096 ); }
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27 #define HAVE_GETPAGESIZE
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28 #endif
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29 #endif
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30
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31 #ifndef HAVE_GETPAGESIZE
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32
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33 #ifdef HAVE_UNISTD_H
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34 #include <unistd.h>
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35 #endif
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36
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37 #ifdef _SC_PAGESIZE
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38 #define getpagesize() sysconf(_SC_PAGESIZE)
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39 #else
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40
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41 #include <sys/param.h>
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42
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43 #ifdef EXEC_PAGESIZE
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44 #define getpagesize() EXEC_PAGESIZE
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45 #else
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46 #ifdef NBPG
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47 #define getpagesize() NBPG * CLSIZE
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48 #ifndef CLSIZE
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49 #define CLSIZE 1
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50 #endif /* no CLSIZE */
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51 #else /* no NBPG */
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52 #if (defined (sparc) && defined (USG)) || defined (SOLARIS2)
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53 #define getpagesize() PAGESIZE
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54 #else /* not Solaris 2 */
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55 #ifdef PAGESIZE
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56 #define getpagesize() PAGESIZE
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57 #endif
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58 #endif /* not Solaris 2 */
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59 #endif /* no NBPG */
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60 #endif /* no EXEC_PAGESIZE */
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61 #endif /* _SC_PAGESIZE */
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62 #endif /* not HAVE_GETPAGESIZE */
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64 #endif /* INCLUDED_getpagesize_h_ */