/* Test for notification mechanism in lio_listio.

   Copyright (C) 2000-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   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 <aio.h>

#include <signal.h>

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include <errno.h>

#include <pthread.h>

static pthread_barrier_t b;

static void

thrfct (sigval_t arg)

{

  int e = pthread_barrier_wait (&b);

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

    {

      puts ("child: barrier_wait failed");

      exit (1);

    }

}

static int

do_test (int argc, char *argv[])

{

  char name[] = "/tmp/aio3.XXXXXX";

  int fd;

  struct aiocb *arr[1];

  struct aiocb cb;

  static const char buf[] = "Hello World\n";

  fd = mkstemp (name);

  if (fd == -1)

    {

      printf ("cannot open temp name: %m\n");

      return 1;

    }

  unlink (name);

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

    {

      puts ("barrier_init failed");

      return 1;

    }

  arr[0] = &cb;

  cb.aio_fildes = fd;

  cb.aio_lio_opcode = LIO_WRITE;

  cb.aio_reqprio = 0;

  cb.aio_buf = (void *) buf;

  cb.aio_nbytes = sizeof (buf) - 1;

  cb.aio_offset = 0;

  cb.aio_sigevent.sigev_notify = SIGEV_THREAD;

  cb.aio_sigevent.sigev_notify_function = thrfct;

  cb.aio_sigevent.sigev_notify_attributes = NULL;

  cb.aio_sigevent.sigev_value.sival_ptr = NULL;

  if (lio_listio (LIO_NOWAIT, arr, 1, NULL) < 0)

    {

      if (errno == ENOSYS)

	{

	  puts ("no aio support in this configuration");

	  return 0;

	}

      printf ("lio_listio failed: %m\n");

      return 1;

    }

  if (aio_suspend ((const struct aiocb *const *) arr, 1, NULL) < 0)

    {

      printf ("aio_suspend failed: %m\n");

      return 1;

    }

  int e = pthread_barrier_wait (&b);

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

    {

      puts ("parent: barrier_wait failed");

      return 1;

    }

  puts ("all OK");

  return 0;

}

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