Date: Mon, 4 Nov 2013 11:48:45 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r257630 - user/pho/stress2/misc Message-ID: <201311041148.rA4BmjgP048263@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: pho Date: Mon Nov 4 11:48:45 2013 New Revision: 257630 URL: http://svnweb.freebsd.org/changeset/base/257630 Log: Added regression test. Sponsored by: EMC / Isilon storage division Added: user/pho/stress2/misc/nanosleep.sh (contents, props changed) Added: user/pho/stress2/misc/nanosleep.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/nanosleep.sh Mon Nov 4 11:48:45 2013 (r257630) @@ -0,0 +1,96 @@ +#!/bin/sh + +# +# Copyright (c) 2013 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. +# +# $FreeBSD$ +# + +# A simplistic regression test for r200510: + +[ `sysctl kern.hz | sed 's/.* //'` -ne 1000 ] && exit 1 + +here=`pwd` +cd /tmp +sed '1,/^EOF/d' < $here/$0 > nanosleep.c +cc -o nanosleep -Wall -Wextra nanosleep.c || exit 1 +rm -f nanosleep.c + +/tmp/nanosleep || exit + +rm -f /tmp/nanosleep +exit 0 +EOF +#include <err.h> +#include <strings.h> +#include <time.h> +#include <stdio.h> +#include <sys/limits.h> +#include <sys/time.h> + +#define timespecsub(vvp, uvp) \ + do { \ + (vvp)->tv_sec -= (uvp)->tv_sec; \ + (vvp)->tv_nsec -= (uvp)->tv_nsec; \ + if ((vvp)->tv_nsec < 0) { \ + (vvp)->tv_sec--; \ + (vvp)->tv_nsec += 1000000000; \ + } \ + } while (0) + +#define N 20000 + +int +main(void) +{ + struct timespec rqt, rmt; + struct timespec start, finish; + long m; + int i; + + m = LONG_MAX; + for (i = 0; i < 100; i++) { + rqt.tv_sec = 0; + rqt.tv_nsec = N; + clock_gettime(CLOCK_REALTIME_PRECISE, &start); + if (nanosleep(&rqt, &rmt) == -1) + err(1, "nanosleep"); + clock_gettime(CLOCK_REALTIME_PRECISE, &finish); + timespecsub(&finish, &start); + if (finish.tv_nsec < N) + errx(1, "Short sleep: %ld", finish.tv_nsec); +// fprintf(stderr, "asked for %f, got %f\n", (double)N / 1e9, +// (double)finish.tv_nsec / 1e9); + if (m > finish.tv_nsec) + m = finish.tv_nsec; + } + if (m > 2 * N) { + fprintf(stderr, "nanosleep(%fs). Best value is %fs.\n", + (double)N / 1e9, (double)m / 1e9); + errx(1, "FAIL"); + } + + return (0); +}
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201311041148.rA4BmjgP048263>