/* Copyright (C) 2003-2018 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

   <http://www.gnu.org/licenses/>.  */

#include <errno.h>

#include <pthread.h>

#include <stdio.h>

#include <stdlib.h>

#include <time.h>

#include <unistd.h>

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;

}

#define TEST_FUNCTION do_test ()

#include "../test-skeleton.c"