1#!/bin/sh 2 3# 4# Copyright (c) 2012 Peter Holm <pho@FreeBSD.org> 5# All rights reserved. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 1. Redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer. 12# 2. Redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution. 15# 16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26# SUCH DAMAGE. 27# 28 29# SUJ rename test scenario by Andrey Zonov <zont@FreeBSD.org> 30# "panic: flush_pagedep_deps: MKDIR_PARENT" seen: 31# http://people.freebsd.org/~pho/stress/log/suj30.txt 32 33[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 34 35. ../default.cfg 36 37here=`pwd` 38cd /tmp 39sed '1,/^EOF/d' < $here/$0 > suj30.c 40mycc -o suj30 -Wall -Wextra -O2 suj30.c -lpthread 41rm -f suj30.c 42 43mount | grep "on $mntpoint " | grep -q md$mdstart && umount $mntpoint 44mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 45 46mdconfig -a -t swap -s 4g -u $mdstart 47newfs -j md$mdstart > /dev/null 48mount /dev/md$mdstart $mntpoint 49chmod 777 $mntpoint 50 51for i in `jot 10`; do 52 /tmp/suj30 $mntpoint/test-$i 100000 & 53done 54wait 55 56while mount | grep -q $mntpoint; do 57 umount $mntpoint || sleep 1 58done 59mdconfig -d -u $mdstart 60rm -f /tmp/suj30 61exit 0 62EOF 63/* 64 * Andrey Zonov (c) 2012 65 * 66 * compile as `cc -o rename rename.c -lpthread' 67 */ 68 69#include <sys/types.h> 70#include <sys/stat.h> 71#include <sys/time.h> 72#include <sys/queue.h> 73#include <err.h> 74#include <errno.h> 75#include <fcntl.h> 76#include <pthread.h> 77#ifdef __FreeBSD__ 78#include <pthread_np.h> 79#define __NP__ 80#endif 81#include <sched.h> 82#include <stdio.h> 83#include <stdlib.h> 84#include <string.h> 85#include <time.h> 86#include <unistd.h> 87 88#define LOCK(x) pthread_mutex_lock(&x.mtx) 89#define UNLOCK(x) pthread_mutex_unlock(&x.mtx) 90#define SIGNAL(x) pthread_cond_signal(&x.wait) 91#define WAIT(x) pthread_cond_wait(&x.wait, &x.mtx) 92 93int max; 94int exited; 95char *dirname1; 96char *dirname2; 97 98struct file { 99 char *name; 100 STAILQ_ENTRY(file) next; 101}; 102 103struct files { 104 pthread_mutex_t mtx; 105 pthread_cond_t wait; 106 STAILQ_HEAD(, file) list; 107}; 108 109static struct files newfiles; 110static struct files renamedfiles; 111 112void *loop_create(void *arg __unused); 113void *loop_rename(void *arg __unused); 114void *loop_unlink(void *arg __unused); 115 116int 117main(int argc, char **argv) 118{ 119 int i; 120 int rc; 121 pthread_t tid[3]; 122 123 if (argc != 3) 124 errx(1, "usage: pthread_count <dirname> <max>"); 125 126 asprintf(&dirname1, "%s.1", argv[1]); 127 asprintf(&dirname2, "%s.2", argv[1]); 128 if (mkdir(dirname1, 0755) == -1) 129 err(1, "mkdir(%s)", dirname1); 130 if (mkdir(dirname2, 0755) == -1) 131 err(1, "mkdir(%s)", dirname2); 132 max = atoi(argv[2]); 133 134 STAILQ_INIT(&newfiles.list); 135 STAILQ_INIT(&renamedfiles.list); 136 137 rc = pthread_mutex_init(&newfiles.mtx, NULL); 138 if (rc != 0) 139 errc(1, rc, "pthread_mutex_init()"); 140 rc = pthread_cond_init(&newfiles.wait, NULL); 141 if (rc != 0) 142 errc(1, rc, "pthread_cond_init()"); 143 rc = pthread_mutex_init(&renamedfiles.mtx, NULL); 144 if (rc != 0) 145 errc(1, rc, "pthread_mutex_init()"); 146 rc = pthread_cond_init(&renamedfiles.wait, NULL); 147 if (rc != 0) 148 errc(1, rc, "pthread_cond_init()"); 149 150 rc = pthread_create(&tid[0], NULL, loop_create, NULL); 151 if (rc != 0) 152 errc(1, rc, "pthread_create()"); 153 rc = pthread_create(&tid[1], NULL, loop_rename, NULL); 154 if (rc != 0) 155 errc(1, rc, "pthread_create()"); 156 rc = pthread_create(&tid[2], NULL, loop_unlink, NULL); 157 if (rc != 0) 158 errc(1, rc, "pthread_create()"); 159 160 for (i = 0; i < 3; i++) { 161 rc = pthread_join(tid[i], NULL); 162 if (rc != 0) 163 errc(1, rc, "pthread_join(%d)", i); 164 } 165 166 rc = pthread_mutex_destroy(&newfiles.mtx); 167 if (rc != 0) 168 errc(1, rc, "pthread_mutex_destroy(newfiles)"); 169 rc = pthread_cond_destroy(&newfiles.wait); 170 if (rc != 0) 171 errc(1, rc, "pthread_cond_destroy(newfiles)"); 172 rc = pthread_mutex_destroy(&renamedfiles.mtx); 173 if (rc != 0) 174 errc(1, rc, "pthread_mutex_destroy(renamedfiles)"); 175 rc = pthread_cond_destroy(&renamedfiles.wait); 176 if (rc != 0) 177 errc(1, rc, "pthread_cond_destroy(renamedfiles)"); 178 rmdir(dirname1); 179 rmdir(dirname2); 180 free(dirname1); 181 free(dirname2); 182 183 exit(0); 184} 185 186void * 187loop_create(void *arg __unused) 188{ 189 int i; 190 struct file *file; 191 192#ifdef __NP__ 193 pthread_set_name_np(pthread_self(), __func__); 194#endif 195 196 for (i = 0; i < max; i++) { 197 file = malloc(sizeof(*file)); 198 asprintf(&file->name, "%s/filename_too-long:%d", dirname1, i); 199 if (mkdir(file->name, 0666) == -1) { 200 warn("mkdir(%s)", file->name); 201 free(file->name); 202 free(file); 203 break; 204 } 205 LOCK(newfiles); 206 STAILQ_INSERT_TAIL(&newfiles.list, file, next); 207 UNLOCK(newfiles); 208 SIGNAL(newfiles); 209 } 210 exited = 1; 211 SIGNAL(newfiles); 212 pthread_exit(NULL); 213} 214 215void * 216loop_rename(void *arg __unused) 217{ 218 char *filename, *newname; 219 struct file *file; 220 221#ifdef __NP__ 222 pthread_set_name_np(pthread_self(), __func__); 223#endif 224 225 for ( ;; ) { 226 LOCK(newfiles); 227 while (STAILQ_EMPTY(&newfiles.list) && exited < 1) 228 WAIT(newfiles); 229 if (STAILQ_EMPTY(&newfiles.list) && exited == 1) { 230 UNLOCK(newfiles); 231 break; 232 } 233 file = STAILQ_FIRST(&newfiles.list); 234 STAILQ_REMOVE_HEAD(&newfiles.list, next); 235 UNLOCK(newfiles); 236 filename = strrchr(file->name, '/'); 237 asprintf(&newname, "%s/%s", dirname2, filename); 238 if (rename(file->name, newname) == -1) 239 err(1, "rename(%s, %s)", file->name, newname); 240 free(file->name); 241 file->name = newname; 242 LOCK(renamedfiles); 243 STAILQ_INSERT_TAIL(&renamedfiles.list, file, next); 244 UNLOCK(renamedfiles); 245 SIGNAL(renamedfiles); 246 } 247 exited = 2; 248 SIGNAL(renamedfiles); 249 pthread_exit(NULL); 250} 251 252void * 253loop_unlink(void *arg __unused) 254{ 255 struct file *file; 256 257#ifdef __NP__ 258 pthread_set_name_np(pthread_self(), __func__); 259#endif 260 261 for ( ;; ) { 262 LOCK(renamedfiles); 263 while (STAILQ_EMPTY(&renamedfiles.list) && exited < 2) 264 WAIT(renamedfiles); 265 if (STAILQ_EMPTY(&renamedfiles.list) && exited == 2) { 266 UNLOCK(renamedfiles); 267 break; 268 } 269 file = STAILQ_FIRST(&renamedfiles.list); 270 STAILQ_REMOVE_HEAD(&renamedfiles.list, next); 271 UNLOCK(renamedfiles); 272 rmdir(file->name); 273 free(file->name); 274 free(file); 275 } 276 pthread_exit(NULL); 277} 278