1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause 5# 6# Copyright (c) 2019 Dell EMC Isilon 7# 8# Redistribution and use in source and binary forms, with or without 9# modification, are permitted provided that the following conditions 10# are met: 11# 1. Redistributions of source code must retain the above copyright 12# notice, this list of conditions and the following disclaimer. 13# 2. Redistributions in binary form must reproduce the above copyright 14# notice, this list of conditions and the following disclaimer in the 15# documentation and/or other materials provided with the distribution. 16# 17# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27# SUCH DAMAGE. 28# 29 30# No problems seen. 31 32. ../default.cfg 33[ `id -u` -ne 0 ] && echo "Must be root!" && exit 1 34 35dir=/tmp 36odir=`pwd` 37cd $dir 38sed '1,/^EOF/d' < $odir/$0 > $dir/sem_timedwait.c 39mycc -o sem_timedwait -Wall -Wextra -O0 -g sem_timedwait.c || exit 1 40rm -f sem_timedwait.c 41cd $odir 42 43set -e 44mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint 45[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart 46mdconfig -a -t swap -s 1g -u $mdstart 47newfs $newfs_flags md$mdstart > /dev/null 48mount /dev/md$mdstart $mntpoint 49set +e 50 51(cd $odir/../testcases/swap; ./swap -t 5m -i 20 -h -l 100) > /dev/null & 52cd $mntpoint 53nice $dir/sem_timedwait 54s=$? 55[ -f sem_timedwait.core -a $s -eq 0 ] && 56 { ls -l sem_timedwait.core; mv sem_timedwait.core $dir; s=1; } 57cd $odir 58 59while pkill swap; do :; done 60wait 61for i in `jot 6`; do 62 mount | grep -q "on $mntpoint " || break 63 umount $mntpoint && break || sleep 10 64 [ $i -eq 6 ] && 65 { echo FATAL; fstat -mf $mntpoint; exit 1; } 66done 67mdconfig -d -u $mdstart 68rm -rf $dir/sem_timedwait 69exit $s 70 71EOF 72#include <sys/param.h> 73#include <sys/mman.h> 74#include <sys/stat.h> 75#include <sys/wait.h> 76 77#include <machine/atomic.h> 78 79#include <err.h> 80#include <errno.h> 81#include <fcntl.h> 82#include <semaphore.h> 83#include <stdio.h> 84#include <stdlib.h> 85#include <time.h> 86#include <unistd.h> 87 88static volatile u_int *share; 89 90#define PARALLEL 64 91#define RUNTIME (5 * 60) 92#define SYNC 0 93 94static void 95test(void) 96{ 97 struct timespec tm; 98 sem_t sem; 99 int i; 100 101 atomic_add_int(&share[SYNC], 1); 102 while (share[SYNC] != PARALLEL) 103 ; 104 105 sem_init(&sem, 0, 0); 106 i = 0; 107 do { 108 clock_gettime(CLOCK_REALTIME, &tm); 109 tm.tv_nsec += 1000; 110 if (tm.tv_nsec >= 1000000000L) { 111 tm.tv_nsec -= 1000000000L; 112 tm.tv_sec++; 113 } 114 115 if (++i == 1000) 116 sem_post(&sem); 117 else 118 usleep(10000); 119 } while (sem_timedwait(&sem, &tm) == -1); 120 121 _exit(0); 122} 123 124int 125main(void) 126{ 127 pid_t pids[PARALLEL]; 128 size_t len; 129 time_t start; 130 int e, i, status; 131 132 e = 0; 133 len = PAGE_SIZE; 134 if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE, 135 MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) 136 err(1, "mmap"); 137 138 start = time(NULL); 139 while ((time(NULL) - start) < RUNTIME && e == 0) { 140 share[SYNC] = 0; 141 for (i = 0; i < PARALLEL; i++) { 142 if ((pids[i] = fork()) == 0) 143 test(); 144 if (pids[i] == -1) 145 err(1, "fork()"); 146 } 147 for (i = 0; i < PARALLEL; i++) { 148 if (waitpid(pids[i], &status, 0) == -1) 149 err(1, "waitpid(%d)", pids[i]); 150 if (status != 0) { 151 if (WIFSIGNALED(status)) 152 fprintf(stderr, 153 "pid %d exit signal %d\n", 154 pids[i], WTERMSIG(status)); 155 } 156 e += status == 0 ? 0 : 1; 157 } 158 } 159 160 return (e); 161} 162