--- IO-AIO/AIO.xs	2010/08/04 14:02:58	1.168
+++ IO-AIO/AIO.xs	2010/08/04 16:06:54	1.169
@@ -142,6 +142,23 @@
 # define POSIX_FADV_DONTNEED 0
 #endif
 
+#ifndef POSIX_MADV_NORMAL
+# define POSIX_MADV_NORMAL 0
+# define NO_MADVISE 1
+#endif
+#ifndef POSIX_MADV_SEQUENTIAL
+# define POSIX_MADV_SEQUENTIAL 0
+#endif
+#ifndef POSIX_MADV_RANDOM
+# define POSIX_MADV_RANDOM 0
+#endif
+#ifndef POSIX_MADV_WILLNEED
+# define POSIX_MADV_WILLNEED 0
+#endif
+#ifndef POSIX_MADV_DONTNEED
+# define POSIX_MADV_DONTNEED 0
+#endif
+
 #ifndef ST_NODEV
 # define ST_NODEV       0
 #endif
@@ -701,6 +718,12 @@
     const_niv (FADV_WILLNEED  , POSIX_FADV_WILLNEED)
     const_niv (FADV_DONTNEED  , POSIX_FADV_DONTNEED)
 
+    const_niv (MADV_NORMAL    , POSIX_MADV_NORMAL)
+    const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
+    const_niv (MADV_RANDOM    , POSIX_MADV_RANDOM)
+    const_niv (MADV_WILLNEED  , POSIX_MADV_WILLNEED)
+    const_niv (MADV_DONTNEED  , POSIX_MADV_DONTNEED)
+
     const_iv (ST_RDONLY)
     const_iv (ST_NOSUID)
     const_iv (ST_NODEV)
@@ -1420,6 +1443,28 @@
         sv_unmagic (scalar, MMAP_MAGIC);
 
 int
+madvise (SV *scalar, off_t offset, off_t length, IV advice)
+        PROTOTYPE: $$$$
+        CODE:
+{
+	char *addr = SvPV_nolen (scalar) + offset;
+
+        if (!SvOK (ST (2)))
+          length = SvCUR (scalar) - offset;
+
+	if (addr >= SvEND (scalar) || length <= 0)
+          XSRETURN_EMPTY;
+
+	#if _XOPEN_SOURCE >= 600 && !NO_MADVISE
+        RETVAL = posix_madvise (addr, length, advice);
+	#else
+        RETVAL = errno = ENOSYS; /* yes, this is actually correct */
+	#endif
+}
+	OUTPUT:
+        RETVAL
+
+int
 mlockall (int flags)
 	PROTOTYPE: $
         CODE: