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glibc/nptl/tst-rwlock6.c
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/* Copyright (C) 2002-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. | |
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 <errno.h> | |
#include <pthread.h> | |
#include <stdlib.h> | |
#include <stdio.h> | |
#include <string.h> | |
#include <sys/time.h> | |
static int kind[] = | |
{ | |
PTHREAD_RWLOCK_PREFER_READER_NP, | |
PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP, | |
PTHREAD_RWLOCK_PREFER_WRITER_NP, | |
}; | |
static void * | |
tf (void *arg) | |
{ | |
pthread_rwlock_t *r = arg; | |
/* Timeout: 0.3 secs. */ | |
struct timeval tv; | |
(void) gettimeofday (&tv, NULL); | |
struct timespec ts; | |
TIMEVAL_TO_TIMESPEC (&tv, &ts); | |
ts.tv_nsec += 300000000; | |
if (ts.tv_nsec >= 1000000000) | |
{ | |
ts.tv_nsec -= 1000000000; | |
++ts.tv_sec; | |
} | |
puts ("child calling timedrdlock"); | |
int err = pthread_rwlock_timedrdlock (r, &ts); | |
if (err == 0) | |
{ | |
puts ("rwlock_timedrdlock returned"); | |
pthread_exit ((void *) 1l); | |
} | |
if (err != ETIMEDOUT) | |
{ | |
printf ("err = %s (%d), expected %s (%d)\n", | |
strerror (err), err, strerror (ETIMEDOUT), ETIMEDOUT); | |
pthread_exit ((void *) 1l); | |
} | |
puts ("1st child timedrdlock done"); | |
struct timeval tv2; | |
(void) gettimeofday (&tv2, NULL); | |
timersub (&tv2, &tv, &tv); | |
if (tv.tv_usec < 200000) | |
{ | |
puts ("timeout too short"); | |
pthread_exit ((void *) 1l); | |
} | |
(void) gettimeofday (&tv, NULL); | |
TIMEVAL_TO_TIMESPEC (&tv, &ts); | |
ts.tv_sec += 10; | |
/* Note that the following operation makes ts invalid. */ | |
ts.tv_nsec += 1000000000; | |
err = pthread_rwlock_timedrdlock (r, &ts); | |
if (err == 0) | |
{ | |
puts ("2nd timedrdlock succeeded"); | |
pthread_exit ((void *) 1l); | |
} | |
if (err != EINVAL) | |
{ | |
puts ("2nd timedrdlock did not return EINVAL"); | |
pthread_exit ((void *) 1l); | |
} | |
puts ("2nd child timedrdlock done"); | |
return NULL; | |
} | |
static int | |
do_test (void) | |
{ | |
size_t cnt; | |
for (cnt = 0; cnt < sizeof (kind) / sizeof (kind[0]); ++cnt) | |
{ | |
pthread_rwlock_t r; | |
pthread_rwlockattr_t a; | |
if (pthread_rwlockattr_init (&a) != 0) | |
{ | |
printf ("round %Zu: rwlockattr_t failed\n", cnt); | |
exit (1); | |
} | |
if (pthread_rwlockattr_setkind_np (&a, kind[cnt]) != 0) | |
{ | |
printf ("round %Zu: rwlockattr_setkind failed\n", cnt); | |
exit (1); | |
} | |
if (pthread_rwlock_init (&r, &a) != 0) | |
{ | |
printf ("round %Zu: rwlock_init failed\n", cnt); | |
exit (1); | |
} | |
if (pthread_rwlockattr_destroy (&a) != 0) | |
{ | |
printf ("round %Zu: rwlockattr_destroy failed\n", cnt); | |
exit (1); | |
} | |
struct timeval tv; | |
(void) gettimeofday (&tv, NULL); | |
struct timespec ts; | |
TIMEVAL_TO_TIMESPEC (&tv, &ts); | |
++ts.tv_sec; | |
/* Get a write lock. */ | |
int e = pthread_rwlock_timedwrlock (&r, &ts); | |
if (e != 0) | |
{ | |
printf ("round %Zu: rwlock_timedwrlock failed (%d)\n", cnt, e); | |
exit (1); | |
} | |
puts ("1st timedwrlock done"); | |
(void) gettimeofday (&tv, NULL); | |
TIMEVAL_TO_TIMESPEC (&tv, &ts); | |
++ts.tv_sec; | |
e = pthread_rwlock_timedrdlock (&r, &ts); | |
if (e == 0) | |
{ | |
puts ("timedrdlock succeeded"); | |
exit (1); | |
} | |
if (e != EDEADLK) | |
{ | |
puts ("timedrdlock did not return EDEADLK"); | |
exit (1); | |
} | |
puts ("1st timedrdlock done"); | |
(void) gettimeofday (&tv, NULL); | |
TIMEVAL_TO_TIMESPEC (&tv, &ts); | |
++ts.tv_sec; | |
e = pthread_rwlock_timedwrlock (&r, &ts); | |
if (e == 0) | |
{ | |
puts ("2nd timedwrlock succeeded"); | |
exit (1); | |
} | |
if (e != EDEADLK) | |
{ | |
puts ("2nd timedwrlock did not return EDEADLK"); | |
exit (1); | |
} | |
puts ("2nd timedwrlock done"); | |
pthread_t th; | |
if (pthread_create (&th, NULL, tf, &r) != 0) | |
{ | |
printf ("round %Zu: create failed\n", cnt); | |
exit (1); | |
} | |
puts ("started thread"); | |
void *status; | |
if (pthread_join (th, &status) != 0) | |
{ | |
printf ("round %Zu: join failed\n", cnt); | |
exit (1); | |
} | |
if (status != NULL) | |
{ | |
printf ("failure in round %Zu\n", cnt); | |
exit (1); | |
} | |
puts ("joined thread"); | |
if (pthread_rwlock_destroy (&r) != 0) | |
{ | |
printf ("round %Zu: rwlock_destroy failed\n", cnt); | |
exit (1); | |
} | |
} | |
return 0; | |
} | |
#define TEST_FUNCTION do_test () | |
#include "../test-skeleton.c" |