/* 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 pthread_barrier_t b;

/* Cleanup handling test.  */

static int cl_called;

static void

cl (void *arg)

{

  ++cl_called;

}

static void *

tf (void *arg)

{

  int r = pthread_barrier_wait (&b);

  if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)

    {

      puts ("barrier_wait failed");

      exit (1);

    }

  pthread_cleanup_push (cl, NULL);

  struct timespec ts = { .tv_sec = arg == NULL ? 10000000 : 0, .tv_nsec = 0 };

  TEMP_FAILURE_RETRY (clock_nanosleep (CLOCK_REALTIME, 0, &ts, &ts);;

  pthread_cleanup_pop (0);

  puts ("clock_nanosleep returned");

  exit (1);

}

static int

do_test (void)

{

  if (pthread_barrier_init (&b, NULL, 2) != 0)

    {

      puts ("barrier_init failed");

      return 1;

    }

  pthread_t th;

  if (pthread_create (&th, NULL, tf, NULL) != 0)

    {

      puts ("1st create failed");

      return 1;

    }

  int r = pthread_barrier_wait (&b);

  if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)

    {

      puts ("barrier_wait failed");

      exit (1);

    }

  struct timespec  ts = { .tv_sec = 0, .tv_nsec = 100000000 };

  while (nanosleep (&ts, &ts) != 0)

    continue;

  puts ("going to cancel in-time");

  if (pthread_cancel (th) != 0)

    {

      puts ("1st cancel failed");

      return 1;

    }

  void *status;

  if (pthread_join (th, &status) != 0)

    {

      puts ("1st join failed");

      return 1;

    }

  if (status != PTHREAD_CANCELED)

    {

      puts ("1st thread not canceled");

      return 1;

    }

  if (cl_called == 0)

    {

      puts ("cleanup handler not called");

      return 1;

    }

  if (cl_called > 1)

    {

      puts ("cleanup handler called more than once");

      return 1;

    }

  puts ("in-time cancellation succeeded");

  cl_called = 0;

  if (pthread_create (&th, NULL, tf, NULL) != 0)

    {

      puts ("2nd create failed");

      return 1;

    }

  puts ("going to cancel early");

  if (pthread_cancel (th) != 0)

    {

      puts ("2nd cancel failed");

      return 1;

    }

  r = pthread_barrier_wait (&b);

  if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)

    {

      puts ("barrier_wait failed");

      exit (1);

    }

  if (pthread_join (th, &status) != 0)

    {

      puts ("2nd join failed");

      return 1;

    }

  if (status != PTHREAD_CANCELED)

    {

      puts ("2nd thread not canceled");

      return 1;

    }

  if (cl_called == 0)

    {

      printf ("cleanup handler not called\n");

      return 1;

    }

  if (cl_called > 1)

    {

      printf ("cleanup handler called more than once\n");

      return 1;

    }

  puts ("early cancellation succeeded");

  return 0;

}

#define TEST_FUNCTION do_test ()

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