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/* Copyright (C) 2002-2017 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"
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