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/* Copyright (C) 2002-2014 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 <stdio.h>
#include <time.h>
#include <unistd.h>
#include <sys/time.h>
#include <config.h>
#ifndef TYPE
# define TYPE PTHREAD_MUTEX_NORMAL
#endif
static int
do_test (void)
{
pthread_mutex_t m;
struct timespec ts;
struct timeval tv;
struct timeval tv2;
int err;
pthread_mutexattr_t a;
if (pthread_mutexattr_init (&a) != 0)
{
puts ("mutexattr_init failed");
return 1;
}
if (pthread_mutexattr_settype (&a, TYPE) != 0)
{
puts ("mutexattr_settype failed");
return 1;
}
#ifdef ENABLE_PI
if (pthread_mutexattr_setprotocol (&a, PTHREAD_PRIO_INHERIT) != 0)
{
puts ("pthread_mutexattr_setprotocol failed");
return 1;
}
#endif
err = pthread_mutex_init (&m, &a);
if (err != 0)
{
#ifdef ENABLE_PI
if (err == ENOTSUP)
{
puts ("PI mutexes unsupported");
return 0;
}
#endif
puts ("mutex_init failed");
return 1;
}
if (pthread_mutexattr_destroy (&a) != 0)
{
puts ("mutexattr_destroy failed");
return 1;
}
if (pthread_mutex_lock (&m) != 0)
{
puts ("mutex_lock failed");
return 1;
}
/* Elided locks do not time out. */
#ifndef ENABLE_LOCK_ELISION
if (pthread_mutex_trylock (&m) == 0)
{
puts ("mutex_trylock succeeded");
return 1;
}
gettimeofday (&tv, NULL);
TIMEVAL_TO_TIMESPEC (&tv, &ts);
ts.tv_sec += 2; /* Wait 2 seconds. */
err = pthread_mutex_timedlock (&m, &ts);
if (err == 0)
{
puts ("timedlock succeeded");
return 1;
}
else if (err != ETIMEDOUT)
{
printf ("timedlock error != ETIMEDOUT: %d\n", err);
return 1;
}
else
{
int clk_tck = sysconf (_SC_CLK_TCK);
gettimeofday (&tv2, NULL);
tv2.tv_sec -= tv.tv_sec;
tv2.tv_usec -= tv.tv_usec;
if (tv2.tv_usec < 0)
{
tv2.tv_usec += 1000000;
tv2.tv_sec -= 1;
}
/* Be a bit tolerant, add one CLK_TCK. */
tv2.tv_usec += 1000000 / clk_tck;
if (tv2.tv_usec >= 1000000)
{
tv2.tv_usec -= 1000000;
++tv2.tv_sec;
}
if (tv2.tv_sec < 2)
{
printf ("premature timeout: %ld.%06ld difference\n",
tv2.tv_sec, tv2.tv_usec);
return 1;
}
}
(void) gettimeofday (&tv, NULL);
TIMEVAL_TO_TIMESPEC (&tv, &ts);
ts.tv_sec += 2; /* Wait 2 seconds. */
/* The following makes the ts value invalid. */
ts.tv_nsec += 1000000000;
err = pthread_mutex_timedlock (&m, &ts);
if (err == 0)
{
puts ("2nd timedlock succeeded");
return 1;
}
else if (err != EINVAL)
{
printf ("2nd timedlock error != EINVAL: %d\n", err);
return 1;
}
if (pthread_mutex_unlock (&m) != 0)
{
puts ("mutex_unlock failed");
return 1;
}
(void) gettimeofday (&tv, NULL);
TIMEVAL_TO_TIMESPEC (&tv, &ts);
ts.tv_sec += 2; /* Wait 2 seconds. */
if (pthread_mutex_timedlock (&m, &ts) != 0)
{
puts ("3rd timedlock failed");
}
(void) gettimeofday (&tv2, NULL);
/* Check that timedlock didn't delay. We use a limit of 0.1 secs. */
timersub (&tv2, &tv, &tv2);
if (tv2.tv_sec > 0 || tv2.tv_usec > 100000)
{
puts ("3rd timedlock didn't return right away");
return 1;
}
#endif
if (pthread_mutex_unlock (&m) != 0)
{
puts ("final mutex_unlock failed");
return 1;
}
if (pthread_mutex_destroy (&m) != 0)
{
puts ("mutex_destroy failed");
return 1;
}
return 0;
}
#define TIMEOUT 4
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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