Mercurial > hg > octave-nkf > gnulib-hg

changeset 1880:47d1f5864f6b

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author Jim Meyering <jim@meyering.net>
date Thu, 15 Jul 1999 09:31:44 +0000
parents c18a90c0e39c
children 13f907e16c9a
files lib/getpagesize.h
diffstat 1 files changed, 35 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
new file mode 100644
--- /dev/null
+++ b/lib/getpagesize.h
@@ -0,0 +1,35 @@
+/* Emulate getpagesize on systems that lack it.  */
+
+#ifndef HAVE_GETPAGESIZE
+
+#ifdef VMS
+#define getpagesize() 512
+#endif
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#ifdef _SC_PAGESIZE
+#define getpagesize() sysconf(_SC_PAGESIZE)
+#else
+
+#include <sys/param.h>
+
+#ifdef EXEC_PAGESIZE
+#define getpagesize() EXEC_PAGESIZE
+#else
+#ifdef NBPG
+#define getpagesize() NBPG * CLSIZE
+#ifndef CLSIZE
+#define CLSIZE 1
+#endif /* no CLSIZE */
+#else /* no NBPG */
+#ifdef NBPC
+#define getpagesize() NBPC
+#endif /* NBPC */
+#endif /* no NBPG */
+#endif /* no EXEC_PAGESIZE */
+#endif /* no _SC_PAGESIZE */
+
+#endif /* not HAVE_GETPAGESIZE */