static void
wait_code (void)
{
struct timespec ts = { .tv_sec = 0, .tv_nsec = 200000000 };
while (nanosleep (&ts, &ts) < 0)
;
}
#ifdef WAIT_IN_CHILD
static pthread_barrier_t b;
#endif
static void *
tf1 (void *arg)
{
#ifdef WAIT_IN_CHILD
int e = pthread_barrier_wait (&b);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
printf ("%s: barrier_wait failed\n", __func__);
exit (1);
}
wait_code ();
#endif
pthread_join ((pthread_t) arg, NULL);
exit (42);
}
static void *
tf2 (void *arg)
{
#ifdef WAIT_IN_CHILD
int e = pthread_barrier_wait (&b);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
printf ("%s: barrier_wait failed\n", __func__);
exit (1);
}
wait_code ();
#endif
pthread_join ((pthread_t) arg, NULL);
exit (43);
}
static int
do_test (void)
{
#ifdef WAIT_IN_CHILD
if (pthread_barrier_init (&b, NULL, 2) != 0)
{
puts ("barrier_init failed");
return 1;
}
#endif
pthread_t th;
int err = pthread_join (pthread_self (), NULL);
if (err == 0)
{
puts ("1st circular join succeeded");
return 1;
}
if (err != EDEADLK)
{
printf ("1st circular join %d, not EDEADLK\n", err);
return 1;
}
if (pthread_create (&th, NULL, tf1, (void *) pthread_self ()) != 0)
{
puts ("1st create failed");
return 1;
}
#ifndef WAIT_IN_CHILD
wait_code ();
#endif
if (pthread_cancel (th) != 0)
{
puts ("cannot cancel 1st thread");
return 1;
}
#ifdef WAIT_IN_CHILD
int e = pthread_barrier_wait (&b);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
printf ("%s: barrier_wait failed\n", __func__);
return 1;
}
#endif
void *r;
err = pthread_join (th, &r);
if (err != 0)
{
printf ("cannot join 1st thread: %d\n", err);
return 1;
}
if (r != PTHREAD_CANCELED)
{
puts ("1st thread not canceled");
return 1;
}
err = pthread_join (pthread_self (), NULL);
if (err == 0)
{
puts ("2nd circular join succeeded");
return 1;
}
if (err != EDEADLK)
{
printf ("2nd circular join %d, not EDEADLK\n", err);
return 1;
}
if (pthread_create (&th, NULL, tf2, (void *) pthread_self ()) != 0)
{
puts ("2nd create failed");
return 1;
}
#ifndef WAIT_IN_CHILD
wait_code ();
#endif
if (pthread_cancel (th) != 0)
{
puts ("cannot cancel 2nd thread");
return 1;
}
#ifdef WAIT_IN_CHILD
e = pthread_barrier_wait (&b);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
printf ("%s: barrier_wait failed\n", __func__);
return 1;
}
#endif
if (pthread_join (th, &r) != 0)
{
puts ("cannot join 2nd thread");
return 1;
}
if (r != PTHREAD_CANCELED)
{
puts ("2nd thread not canceled");
return 1;
}
err = pthread_join (pthread_self (), NULL);
if (err == 0)
{
puts ("3rd circular join succeeded");
return 1;
}
if (err != EDEADLK)
{
printf ("3rd circular join %d, not EDEADLK\n", err);
return 1;
}
return 0;
}
