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/* Copyright (C) 2003-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
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
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <sys/time.h>
static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
static pthread_mutex_t mut = PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP;
static pthread_barrier_t bar;
static void
ch (void *arg)
{
int e = pthread_mutex_lock (&mut);
if (e == 0)
{
puts ("mutex not locked at all by cond_wait");
exit (1);
}
if (e != EDEADLK)
{
puts ("no deadlock error signaled");
exit (1);
}
if (pthread_mutex_unlock (&mut) != 0)
{
puts ("ch: cannot unlock mutex");
exit (1);
}
puts ("ch done");
}
static void *
tf1 (void *p)
{
int err;
if (pthread_setcancelstate (PTHREAD_CANCEL_ENABLE, NULL) != 0
|| pthread_setcanceltype (PTHREAD_CANCEL_DEFERRED, NULL) != 0)
{
puts ("cannot set cancellation options");
exit (1);
}
err = pthread_mutex_lock (&mut);
if (err != 0)
{
puts ("child: cannot get mutex");
exit (1);
}
err = pthread_barrier_wait (&bar);
if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD)
{
printf ("barrier_wait returned %d\n", err);
exit (1);
}
puts ("child: got mutex; waiting");
pthread_cleanup_push (ch, NULL);
pthread_cond_wait (&cond, &mut);
pthread_cleanup_pop (0);
puts ("child: cond_wait should not have returned");
return NULL;
}
static void *
tf2 (void *p)
{
int err;
if (pthread_setcancelstate (PTHREAD_CANCEL_ENABLE, NULL) != 0
|| pthread_setcanceltype (PTHREAD_CANCEL_DEFERRED, NULL) != 0)
{
puts ("cannot set cancellation options");
exit (1);
}
err = pthread_mutex_lock (&mut);
if (err != 0)
{
puts ("child: cannot get mutex");
exit (1);
}
err = pthread_barrier_wait (&bar);
if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD)
{
printf ("barrier_wait returned %d\n", err);
exit (1);
}
puts ("child: got mutex; waiting");
pthread_cleanup_push (ch, NULL);
/* Current time. */
struct timeval tv;
(void) gettimeofday (&tv, NULL);
/* +1000 seconds in correct format. */
struct timespec ts;
TIMEVAL_TO_TIMESPEC (&tv, &ts);
ts.tv_sec += 1000;
pthread_cond_timedwait (&cond, &mut, &ts);
pthread_cleanup_pop (0);
puts ("child: cond_wait should not have returned");
return NULL;
}
static int
do_test (void)
{
pthread_t th;
int err;
printf ("&cond = %p\n&mut = %p\n", &cond, &mut);
puts ("parent: get mutex");
err = pthread_barrier_init (&bar, NULL, 2);
if (err != 0)
{
puts ("parent: cannot init barrier");
exit (1);
}
puts ("parent: create child");
err = pthread_create (&th, NULL, tf1, NULL);
if (err != 0)
{
puts ("parent: cannot create thread");
exit (1);
}
puts ("parent: wait for child to lock mutex");
err = pthread_barrier_wait (&bar);
if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("parent: cannot wait for barrier");
exit (1);
}
err = pthread_mutex_lock (&mut);
if (err != 0)
{
puts ("parent: mutex_lock failed");
exit (1);
}
err = pthread_mutex_unlock (&mut);
if (err != 0)
{
puts ("parent: mutex_unlock failed");
exit (1);
}
if (pthread_cancel (th) != 0)
{
puts ("cannot cancel thread");
exit (1);
}
void *r;
err = pthread_join (th, &r);
if (err != 0)
{
puts ("parent: failed to join");
exit (1);
}
if (r != PTHREAD_CANCELED)
{
puts ("child hasn't been canceled");
exit (1);
}
puts ("parent: create 2nd child");
err = pthread_create (&th, NULL, tf2, NULL);
if (err != 0)
{
puts ("parent: cannot create thread");
exit (1);
}
puts ("parent: wait for child to lock mutex");
err = pthread_barrier_wait (&bar);
if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("parent: cannot wait for barrier");
exit (1);
}
err = pthread_mutex_lock (&mut);
if (err != 0)
{
puts ("parent: mutex_lock failed");
exit (1);
}
err = pthread_mutex_unlock (&mut);
if (err != 0)
{
puts ("parent: mutex_unlock failed");
exit (1);
}
if (pthread_cancel (th) != 0)
{
puts ("cannot cancel thread");
exit (1);
}
err = pthread_join (th, &r);
if (err != 0)
{
puts ("parent: failed to join");
exit (1);
}
if (r != PTHREAD_CANCELED)
{
puts ("child hasn't been canceled");
exit (1);
}
puts ("done");
return 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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