summaryrefslogtreecommitdiffstats
path: root/lib/malloc/getpagesize.h
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--lib/malloc/getpagesize.h60
1 files changed, 60 insertions, 0 deletions
diff --git a/lib/malloc/getpagesize.h b/lib/malloc/getpagesize.h
new file mode 100644
index 0000000..a59eabe
--- /dev/null
+++ b/lib/malloc/getpagesize.h
@@ -0,0 +1,60 @@
+/* Emulation of getpagesize() for systems that need it.
+ Copyright (C) 1991-2003 Free Software Foundation, Inc.
+
+ This file is part of GNU Bash, the Bourne-Again SHell.
+
+ Bash 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.
+
+ Bash 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 Bash. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#if defined (HAVE_UNISTD_H)
+# ifdef _MINIX
+# include <sys/types.h>
+# endif
+# include <unistd.h>
+# if defined (_SC_PAGESIZE)
+# define getpagesize() sysconf(_SC_PAGESIZE)
+# else
+# if defined (_SC_PAGE_SIZE)
+# define getpagesize() sysconf(_SC_PAGE_SIZE)
+# endif /* _SC_PAGE_SIZE */
+# endif /* _SC_PAGESIZE */
+#endif
+
+#if !defined (getpagesize)
+# if defined (HAVE_SYS_PARAM_H)
+# include <sys/param.h>
+# endif
+# 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 (getpagesize)
+# define getpagesize() 4096 /* Just punt and use reasonable value */
+#endif