svn commit: r332008 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Wed Apr  4 11:12:47 2018
New Revision: 332008
URL: https://svnweb.freebsd.org/changeset/base/332008

Log:
  Added a test scenario to demonstrate a memory leak for threaded programs.
  
  Sponsored by:	Dell EMC Isilon

Added:
  user/pho/stress2/misc/thr3.sh   (contents, props changed)

Added: user/pho/stress2/misc/thr3.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/thr3.sh	Wed Apr  4 11:12:47 2018	(r332008)
@@ -0,0 +1,105 @@
+#!/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.
+#
+# $FreeBSD$
+
+# Demonstrate VM leakage. Not seen on FreeBSD HEAD.
+
+. ../default.cfg
+
+here=`pwd`
+cd /tmp
+sed '1,/^EOF/d' < $here/$0 > thr3.c
+mycc -o thr3 -Wall -Wextra -O0 thr3.c -lpthread || exit 1
+rm -f thr3.c
+
+./thr3 &
+pid=$!
+
+log=/tmp/$0.$$
+trap "rm -f $log" EXIT INT
+r=`ps -Ovsz -p $pid | head -1`
+echo "        $r" > $log
+export max=0
+export n=0
+while true; do
+	sleep 30
+	vsz=`ps -Ovsz -p $pid | tail -1 | awk '{print $2}'`
+	[ -z "$vsz" -o "$vsz" = VSZ ] && break
+	if [ $vsz -gt $max ]; then
+		max=$vsz
+		r=`ps -Ovsz -p $pid | tail -1`
+		echo "`date '+%T'` $r"
+		n=$((n + 1))
+	fi
+done >> $log 2>&1
+[ $n -gt 1 ] && cat $log
+wait
+rm -f thr3
+[ $n -gt 1 ] && exit 1 || exit 0
+EOF
+#include <sys/types.h>
+#include <sys/time.h>
+
+#include <err.h>
+#include <fcntl.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#define NTHREADS 256
+#define RUNTIME (3 * 60)
+
+static void *
+thr_routine(void *arg __unused)
+{
+	getuid();
+	return (NULL);
+}
+
+int
+main(void)
+{
+	pthread_t threads[NTHREADS];
+	time_t start;
+	int i, r;
+
+	start = time(NULL);
+	while (time(NULL) - start < RUNTIME) {
+		for (i = 0; i < NTHREADS; i++)
+			if ((r = pthread_create(&threads[i], NULL,
+			    thr_routine, NULL)) != 0)
+				errc(1, r, "pthread_create()");
+
+		for (i = 0; i < NTHREADS; i++)
+			if ((r = pthread_join(threads[i], NULL)) != 0)
+				errc(1, r, "pthread_join(%d)", i);
+	}
+
+	return (0);
+}