#!/bin/sh
#
# Copyright (c) 2014 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.
#
# _exit(2) test scenario with focus on shared channel tear down.
. ../default.cfg
here=`pwd`
cd /tmp
sed '1,/^EOF/d' < $here/$0 > pthread3.c
mycc -o pthread3 -Wall -Wextra -O2 -g -gdwarf-2 pthread3.c -lpthread || exit 1
rm -f pthread3.c
for i in `jot 8`; do
/tmp/pthread3 &
pids="$pids $!"
done
s=0
for i in $pids; do
wait $i
e=$?
[ $e -ne 0 ] && s=$e
done
rm -f /tmp/pthread3
exit $s
EOF
/*
* Threaded producer-consumer test.
* Loosly based on work by
* Andrey Zonov (c) 2012
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/queue.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.h>
#ifdef __FreeBSD__
#include <pthread_np.h>
#define __NP__
#endif
#include <sched.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <sys/wait.h>
#define LOCK(x) plock(&x.mtx)
#define UNLOCK(x) punlock(&x.mtx)
#define SIGNAL(x) psig(&x.wait)
#define WAIT(x) pwait(&x.wait, &x.mtx)
long ncreate, nrename, nunlink;
int max;
char *dirname1;
char *dirname2;
struct file {
char *name;
STAILQ_ENTRY(file) next;
};
struct files {
pthread_mutex_t mtx;
pthread_cond_t wait;
STAILQ_HEAD(, file) list;
};
static struct files newfiles;
static struct files renamedfiles;
static void
hand(int i __unused) { /* handler */
fprintf(stderr, "max = %d, ncreate = %ld, nrename = %ld, nunlink = %ld\n",
max, ncreate, nrename, nunlink);
}
static void
ahand(int i __unused) { /* handler */
fprintf(stderr, "FAIL\n");
hand(0);
_exit(0);
}
void
plock(pthread_mutex_t *l)
{
int rc;
if ((rc = pthread_mutex_lock(l)) != 0)
errc(1, rc, "pthread_mutex_lock");
}
void
punlock(pthread_mutex_t *l)
{
int rc;
if ((rc = pthread_mutex_unlock(l)) != 0)
errc(1, rc, "pthread_mutex_unlock");
}
void
psig(pthread_cond_t *c)
{
int rc;
if ((rc = pthread_cond_signal(c)) != 0)
errc(1, rc, "pthread_cond_signal");
}
void
pwait(pthread_cond_t *c, pthread_mutex_t *l)
{
int rc;
if ((rc = pthread_cond_wait(c, l)) != 0)
errc(1, rc, "pthread_cond_wait");
}
void *
loop_create(void *arg __unused)
{
int i, j;
struct file *file;
#ifdef __NP__
pthread_set_name_np(pthread_self(), __func__);
#endif
for (i = 0; i < max; i++) {
file = malloc(sizeof(*file));
asprintf(&file->name, "%s/filename_too-long:%d", dirname1, i);
LOCK(newfiles);
STAILQ_INSERT_TAIL(&newfiles.list, file, next);
ncreate++;
UNLOCK(newfiles);
SIGNAL(newfiles);
if ((i > 0) && (i % 100000 == 0))
for (j = 0; j < 10 && ncreate != nrename; j++)
usleep(400);
}
return (NULL);
}
void *
loop_rename(void *arg __unused)
{
char *filename, *newname;
struct file *file;
#ifdef __NP__
pthread_set_name_np(pthread_self(), __func__);
#endif
while (nrename < max) {
LOCK(newfiles);
while (STAILQ_EMPTY(&newfiles.list)) {
WAIT(newfiles);
}
file = STAILQ_FIRST(&newfiles.list);
STAILQ_REMOVE_HEAD(&newfiles.list, next);
UNLOCK(newfiles);
filename = strrchr(file->name, '/');
asprintf(&newname, "%s/%s", dirname2, filename);
nrename++;
free(file->name);
file->name = newname;
LOCK(renamedfiles);
STAILQ_INSERT_TAIL(&renamedfiles.list, file, next);
UNLOCK(renamedfiles);
SIGNAL(renamedfiles);
}
return (NULL);
}
void *
loop_unlink(void *arg __unused)
{
struct file *file;
#ifdef __NP__
pthread_set_name_np(pthread_self(), __func__);
#endif
while (nunlink < max) {
LOCK(renamedfiles);
while (STAILQ_EMPTY(&renamedfiles.list)) {
WAIT(renamedfiles);
}
file = STAILQ_FIRST(&renamedfiles.list);
STAILQ_REMOVE_HEAD(&renamedfiles.list, next);
nunlink++;
UNLOCK(renamedfiles);
free(file->name);
free(file);
if (arc4random() % 100 == 1)
if (arc4random() % 100 == 1)
if (arc4random() % 100 < 10)
_exit(0);
}
return (NULL);
}
void
test(void)
{
int i;
int rc;
pthread_t tid[3];
asprintf(&dirname1, "%s.1", "f1");
asprintf(&dirname2, "%s.2", "f2");
// max = 15000000;
max = 50000;
STAILQ_INIT(&newfiles.list);
STAILQ_INIT(&renamedfiles.list);
if ((rc = pthread_mutex_init(&newfiles.mtx, NULL)) != 0)
errc(1, rc, "pthread_mutex_init()");
if ((rc = pthread_cond_init(&newfiles.wait, NULL)) != 0)
errc(1, rc, "pthread_cond_init()");
if ((rc = pthread_mutex_init(&renamedfiles.mtx, NULL)) != 0)
errc(1, rc, "pthread_mutex_init()");
if ((rc = pthread_cond_init(&renamedfiles.wait, NULL)) != 0)
errc(1, rc, "pthread_cond_init()");
signal(SIGINFO, hand);
signal(SIGALRM, ahand);
alarm(300);
if ((rc = pthread_create(&tid[0], NULL, loop_create, NULL)) != 0)
errc(1, rc, "pthread_create()");
if ((rc = pthread_create(&tid[1], NULL, loop_rename, NULL)) != 0)
errc(1, rc, "pthread_create()");
if ((rc = pthread_create(&tid[2], NULL, loop_unlink, NULL)) != 0)
errc(1, rc, "pthread_create()");
for (i = 0; i < 3; i++) {
if ((rc = pthread_join(tid[i], NULL)) != 0)
errc(1, rc, "pthread_join(%d)", i);
}
if ((rc = pthread_mutex_destroy(&newfiles.mtx)) != 0)
errc(1, rc, "pthread_mutex_destroy(newfiles)");
if ((rc = pthread_cond_destroy(&newfiles.wait)) != 0)
errc(1, rc, "pthread_cond_destroy(newfiles)");
if ((rc = pthread_mutex_destroy(&renamedfiles.mtx)) != 0)
errc(1, rc, "pthread_mutex_destroy(renamedfiles)");
if ((rc = pthread_cond_destroy(&renamedfiles.wait)) != 0)
errc(1, rc, "pthread_cond_destroy(renamedfiles)");
free(dirname1);
free(dirname2);
_exit(0);
}
int
main(void)
{
int i;
alarm(1200);
for (i = 0; i < 1000; i++) {
if (fork() == 0)
test();
wait(NULL);
}
return (0);
}
