svn commit: r293198 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Tue Jan  5 14:54:10 2016
New Revision: 293198
URL: https://svnweb.freebsd.org/changeset/base/293198

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

Added:
  user/pho/stress2/misc/posix_fadvise3.sh   (contents, props changed)

Added: user/pho/stress2/misc/posix_fadvise3.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/posix_fadvise3.sh	Tue Jan  5 14:54:10 2016	(r293198)
@@ -0,0 +1,119 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2016 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.
+#
+# $FreeBSD$
+#
+
+# Looping thread seen:
+# https://people.freebsd.org/~pho/stress/log/kostik855.txt
+# Fixed by r293197.
+
+. ../default.cfg
+
+odir=`pwd`
+cd /tmp
+sed '1,/^EOF/d' < $odir/$0 > posix_fadvise3.c
+mycc -o posix_fadvise3 -Wall -Wextra -O2 -g posix_fadvise3.c
+
+data=/tmp/posix_fadvise3.data
+dd if=/dev/zero of=$data bs=1m count=64 2>&1 | \
+    egrep -v 'records|transferred'
+/tmp/posix_fadvise3
+
+rm $data
+truncate -s 64m $data
+/tmp/posix_fadvise3
+
+rm -f /tmp/posix_fadvise3 posix_fadvise3.c $data
+exit
+EOF
+#include <err.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#define LOOPS 10000
+#define N (128 * 1024 / (int)sizeof(u_int32_t))
+
+u_int32_t r[N];
+
+unsigned long
+makearg(void)
+{
+	unsigned int i;
+	unsigned long val;
+
+	val = arc4random();
+	i   = arc4random() % 100;
+	if (i < 20)
+		val = val & 0xff;
+	if (i >= 20 && i < 40)
+		val = val & 0xffff;
+	if (i >= 40 && i < 60)
+		val = (unsigned long)(r) | (val & 0xffff);
+#if defined(__LP64__)
+	if (i >= 60) {
+		val = (val << 32) | arc4random();
+		if (i > 80)
+			val = val & 0x00007fffffffffffUL;
+	}
+#endif
+
+	return(val);
+}
+
+int
+main(void)
+{
+	off_t len, offset;
+	int advise, fd, i, j;
+
+	if ((fd = open("/tmp/posix_fadvise3.data", O_RDONLY)) == -1)
+		err(1, "open()");
+	offset = 0;
+	len = 0x7fffffffffffffff;
+	advise = 4;
+	if (posix_fadvise(fd, offset, len, advise) == -1)
+		warn("posix_fadvise");
+	close(fd);
+
+	for (i = 0; i < LOOPS; i++) {
+		for (j = 0; j < N; j++)
+			r[j] = arc4random();
+		if ((fd = open("/tmp/posix_fadvise3.data", O_RDONLY)) == -1)
+			err(1, "open()");
+		offset = makearg();
+		len = makearg();
+		advise = arc4random() % 6;
+		if (posix_fadvise(fd, offset, len, advise) == -1)
+			warn("posix_fadvise");
+		close(fd);
+	}
+
+	return (0);
+}