svn commit: r269150 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Sun Jul 27 07:07:12 2014
New Revision: 269150
URL: http://svnweb.freebsd.org/changeset/base/269150

Log:
  Added a v_wire_count test scenario.
  
  Sponsored by:	 EMC / Isilon storage division

Added:
  user/pho/stress2/misc/mmap13.sh   (contents, props changed)

Added: user/pho/stress2/misc/mmap13.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/mmap13.sh	Sun Jul 27 07:07:12 2014	(r269150)
@@ -0,0 +1,77 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2014 EMC Corp.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# $FreeBSD$
+#
+
+# Leak of "vm.stats.vm.v_wire_count" seen.
+# Test scenario by: Mark Johnston markj@
+# Fixed in r269134.
+
+dir=/tmp
+odir=`pwd`
+cd $dir
+sed '1,/^EOF/d' < $odir/$0 > $dir/mmap13.c
+cc -o mmap13  -O2 -Wall -Wextra mmap13.c || exit 1
+rm -f mmap13.c
+cd $odir
+
+v1=`sysctl -n vm.stats.vm.v_wire_count`
+for i in `jot 5000`; do
+	/tmp/mmap13
+done
+v2=`sysctl -n vm.stats.vm.v_wire_count`
+[ $v2 -gt $((v1 + 500)) ] &&
+    echo "FAIL vm.stats.vm.v_wire_count changed from $v1 to $v2."
+
+rm -f /tmp/mmap13
+exit
+
+EOF
+#include <sys/mman.h>
+
+#include <err.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+int
+main(void)
+{
+	void *addr;
+	size_t sz;
+
+	sz = getpagesize();
+	addr = mmap(NULL, sz, PROT_READ | PROT_WRITE, MAP_ANON, -1, 0);
+	if (addr == NULL)
+		err(1, "mmap");
+	if (mlock(addr, sz) != 0)
+		err(1, "mlock");
+	if (mprotect(addr, sz, PROT_NONE) != 0)
+		err(1, "mprotect");
+
+	return (0);
+}