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glibc/nptl/tst-cond24.c
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/* Verify that condition variables synchronized by PI mutexes don't hang. | |
Copyright (C) 2012-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library is distributed in the hope that it will be useful, | |
but WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#include <pthread.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <string.h> | |
#include <errno.h> | |
#include <sys/types.h> | |
#include <sys/syscall.h> | |
#include <unistd.h> | |
#include <sys/time.h> | |
#include <time.h> | |
#define THREADS_NUM 5 | |
#define MAXITER 50000 | |
static pthread_mutex_t mutex; | |
static pthread_mutexattr_t mutex_attr; | |
static pthread_cond_t cond; | |
static pthread_t threads[THREADS_NUM]; | |
static int pending = 0; | |
typedef void * (*threadfunc) (void *); | |
void * | |
thread_fun_timed (void *arg) | |
{ | |
int *ret = arg; | |
int rv, i; | |
printf ("Started thread_fun_timed[%d]\n", *ret); | |
for (i = 0; i < MAXITER / THREADS_NUM; i++) | |
{ | |
rv = pthread_mutex_lock (&mutex); | |
if (rv) | |
{ | |
printf ("pthread_mutex_lock: %s(%d)\n", strerror (rv), rv); | |
*ret = 1; | |
goto out; | |
} | |
while (!pending) | |
{ | |
struct timespec ts; | |
clock_gettime(CLOCK_REALTIME, &ts); | |
ts.tv_sec += 20; | |
rv = pthread_cond_timedwait (&cond, &mutex, &ts); | |
/* There should be no timeout either. */ | |
if (rv) | |
{ | |
printf ("pthread_cond_wait: %s(%d)\n", strerror (rv), rv); | |
*ret = 1; | |
goto out; | |
} | |
} | |
pending--; | |
rv = pthread_mutex_unlock (&mutex); | |
if (rv) | |
{ | |
printf ("pthread_mutex_unlock: %s(%d)\n", strerror (rv), rv); | |
*ret = 1; | |
goto out; | |
} | |
} | |
*ret = 0; | |
out: | |
return ret; | |
} | |
void * | |
thread_fun (void *arg) | |
{ | |
int *ret = arg; | |
int rv, i; | |
printf ("Started thread_fun[%d]\n", *ret); | |
for (i = 0; i < MAXITER / THREADS_NUM; i++) | |
{ | |
rv = pthread_mutex_lock (&mutex); | |
if (rv) | |
{ | |
printf ("pthread_mutex_lock: %s(%d)\n", strerror (rv), rv); | |
*ret = 1; | |
goto out; | |
} | |
while (!pending) | |
{ | |
rv = pthread_cond_wait (&cond, &mutex); | |
if (rv) | |
{ | |
printf ("pthread_cond_wait: %s(%d)\n", strerror (rv), rv); | |
*ret = 1; | |
goto out; | |
} | |
} | |
pending--; | |
rv = pthread_mutex_unlock (&mutex); | |
if (rv) | |
{ | |
printf ("pthread_mutex_unlock: %s(%d)\n", strerror (rv), rv); | |
*ret = 1; | |
goto out; | |
} | |
} | |
*ret = 0; | |
out: | |
return ret; | |
} | |
static int | |
do_test_wait (threadfunc f) | |
{ | |
int i; | |
int rv; | |
int counter = 0; | |
int retval[THREADS_NUM]; | |
puts ("Starting test"); | |
rv = pthread_mutexattr_init (&mutex_attr); | |
if (rv) | |
{ | |
printf ("pthread_mutexattr_init: %s(%d)\n", strerror (rv), rv); | |
return 1; | |
} | |
rv = pthread_mutexattr_setprotocol (&mutex_attr, PTHREAD_PRIO_INHERIT); | |
if (rv) | |
{ | |
printf ("pthread_mutexattr_setprotocol: %s(%d)\n", strerror (rv), rv); | |
return 1; | |
} | |
rv = pthread_mutex_init (&mutex, &mutex_attr); | |
if (rv) | |
{ | |
printf ("pthread_mutex_init: %s(%d)\n", strerror (rv), rv); | |
return 1; | |
} | |
rv = pthread_cond_init (&cond, NULL); | |
if (rv) | |
{ | |
printf ("pthread_cond_init: %s(%d)\n", strerror (rv), rv); | |
return 1; | |
} | |
for (i = 0; i < THREADS_NUM; i++) | |
{ | |
retval[i] = i; | |
rv = pthread_create (&threads[i], NULL, f, &retval[i]); | |
if (rv) | |
{ | |
printf ("pthread_create: %s(%d)\n", strerror (rv), rv); | |
return 1; | |
} | |
} | |
for (; counter < MAXITER; counter++) | |
{ | |
rv = pthread_mutex_lock (&mutex); | |
if (rv) | |
{ | |
printf ("pthread_mutex_lock: %s(%d)\n", strerror (rv), rv); | |
return 1; | |
} | |
if (!(counter % 100)) | |
printf ("counter: %d\n", counter); | |
pending += 1; | |
rv = pthread_cond_signal (&cond); | |
if (rv) | |
{ | |
printf ("pthread_cond_signal: %s(%d)\n", strerror (rv), rv); | |
return 1; | |
} | |
rv = pthread_mutex_unlock (&mutex); | |
if (rv) | |
{ | |
printf ("pthread_mutex_unlock: %s(%d)\n", strerror (rv), rv); | |
return 1; | |
} | |
} | |
for (i = 0; i < THREADS_NUM; i++) | |
{ | |
void *ret; | |
rv = pthread_join (threads[i], &ret); | |
if (rv) | |
{ | |
printf ("pthread_join: %s(%d)\n", strerror (rv), rv); | |
return 1; | |
} | |
if (ret && *(int *)ret) | |
{ | |
printf ("Thread %d returned with an error\n", i); | |
return 1; | |
} | |
} | |
return 0; | |
} | |
static int | |
do_test (void) | |
{ | |
puts ("Testing pthread_cond_wait"); | |
int ret = do_test_wait (thread_fun); | |
if (ret) | |
return ret; | |
puts ("Testing pthread_cond_timedwait"); | |
return do_test_wait (thread_fun_timed); | |
} | |
#define TIMEOUT 20 | |
#define TEST_FUNCTION do_test () | |
#include "../test-skeleton.c" |