Date: Wed, 4 Apr 2018 11:12:47 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r332008 - user/pho/stress2/misc Message-ID: <201804041112.w34BClRM020965@repo.freebsd.org>
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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); +}
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