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-rw-r--r--lib/malloclib/getpagesize.h56
1 files changed, 56 insertions, 0 deletions
diff --git a/lib/malloclib/getpagesize.h b/lib/malloclib/getpagesize.h
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+/* Emulation of getpagesize() for systems that need it.
+ Copyright (C) 1991 Free Software Foundation, Inc.
+
+This program 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 2 of the License, or
+(at your option) any later version.
+
+This program 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 this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#if !defined (USG)
+extern size_t getpagesize __P ((void));
+# if !defined (HAVE_GETPAGESIZE)
+# define HAVE_GETPAGESIZE
+# endif /* !HAVE_GETPAGESIZE */
+#endif /* !USG */
+
+#if !defined (HAVE_GETPAGESIZE) && defined (HAVE_UNISTD_H)
+# include <unistd.h>
+# if defined (_SC_PAGESIZE)
+# define getpagesize() sysconf(_SC_PAGESIZE)
+# endif /* _SC_PAGESIZE */
+#endif
+
+#if !defined (HAVE_GETPAGESIZE)
+# include <sys/param.h>
+# if defined (PAGESIZE)
+# define getpagesize() PAGESIZE
+# else /* !PAGESIZE */
+# if defined (EXEC_PAGESIZE)
+# define getpagesize() EXEC_PAGESIZE
+# else /* !EXEC_PAGESIZE */
+# if defined (NBPG)
+# if !defined (CLSIZE)
+# define CLSIZE 1
+# endif /* !CLSIZE */
+# define getpagesize() (NBPG * CLSIZE)
+# else /* !NBPG */
+# if defined (NBPC)
+# define getpagesize() NBPC
+# endif /* NBPC */
+# endif /* !NBPG */
+# endif /* !EXEC_PAGESIZE */
+# endif /* !PAGESIZE */
+#endif /* !getpagesize */
+
+#if !defined (HAVE_GETPAGESIZE) && !defined (getpagesize)
+# define getpagesize() 4096 /* Just punt and use reasonable value */
+#endif /* !HAVE_GETPAGESIZE && !getpagesize */