src/getpagesize.h

/* Emulate getpagesize on systems that lack it.
   Copyright (C) 1986, 1992, 1995, 2001-2014 Free Software Foundation,
   Inc.

This file is part of GNU Emacs.

GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */

#ifndef HAVE_GETPAGESIZE

# include <unistd.h>

# ifdef _SC_PAGESIZE
#  define getpagesize() sysconf (_SC_PAGESIZE)
# else /* no _SC_PAGESIZE */
#  ifdef HAVE_SYS_PARAM_H
#   include <sys/param.h>
#   ifdef EXEC_PAGESIZE
#    define getpagesize() EXEC_PAGESIZE
#   else /* no EXEC_PAGESIZE */
#    ifdef NBPG
#     define getpagesize() NBPG * CLSIZE
#     ifndef CLSIZE
#      define CLSIZE 1
#     endif /* no CLSIZE */
#    else /* no NBPG */
#      ifdef PAGESIZE
#       define getpagesize() PAGESIZE
#      endif /* PAGESIZE */
#    endif /* no NBPG */
#   endif /* no EXEC_PAGESIZE */
#  else /* no HAVE_SYS_PARAM_H */
#   define getpagesize() 8192	/* punt totally */
#  endif /* no HAVE_SYS_PARAM_H */
# endif /* no _SC_PAGESIZE */

#endif /* no HAVE_GETPAGESIZE */
Commit	Line	Data
	1	/* Emulate getpagesize on systems that lack it.
	2	Copyright (C) 1986, 1992, 1995, 2001-2014 Free Software Foundation,
	3	Inc.
	4
	5	This file is part of GNU Emacs.
	6
	7	GNU Emacs is free software: you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation, either version 3 of the License, or
	10	(at your option) any later version.
	11
	12	GNU Emacs is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
	19
	20	#ifndef HAVE_GETPAGESIZE
	21
	22	# include <unistd.h>
	23
	24	# ifdef _SC_PAGESIZE
	25	# define getpagesize() sysconf (_SC_PAGESIZE)
	26	# else /* no _SC_PAGESIZE */
	27	# ifdef HAVE_SYS_PARAM_H
	28	# include <sys/param.h>
	29	# ifdef EXEC_PAGESIZE
	30	# define getpagesize() EXEC_PAGESIZE
	31	# else /* no EXEC_PAGESIZE */
	32	# ifdef NBPG
	33	# define getpagesize() NBPG * CLSIZE
	34	# ifndef CLSIZE
	35	# define CLSIZE 1
	36	# endif /* no CLSIZE */
	37	# else /* no NBPG */
	38	# ifdef PAGESIZE
	39	# define getpagesize() PAGESIZE
	40	# endif /* PAGESIZE */
	41	# endif /* no NBPG */
	42	# endif /* no EXEC_PAGESIZE */
	43	# else /* no HAVE_SYS_PARAM_H */
	44	# define getpagesize() 8192 /* punt totally */
	45	# endif /* no HAVE_SYS_PARAM_H */
	46	# endif /* no _SC_PAGESIZE */
	47
	48	#endif /* no HAVE_GETPAGESIZE */
	49