/* 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 <pthread.h>

#include <semaphore.h>

#include <signal.h>

#include <stdint.h>

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include <pthreaddef.h>

extern pthread_barrier_t b;

#define TOTAL_SIGS 1000

extern int nsigs;

extern sem_t s;

static __thread void (*fp) (void);

#define THE_SIG SIGUSR1

void

handler (int sig)

{

  if (sig != THE_SIG)

    {

      write (STDOUT_FILENO, "wrong signal\n", 13);

      _exit (1);

    }

  fp ();

  if (sem_post (&s) != 0)

    {

      write (STDOUT_FILENO, "sem_post failed\n", 16);

      _exit (1);

    }

}

void *

tf (void *arg)

{

  if ((uintptr_t) pthread_self () & (TCB_ALIGNMENT - 1))

    {

      puts ("thread's struct pthread not aligned enough");

      exit (1);

    }

  if (fp != NULL)

    {

      puts ("fp not initially NULL");

      exit (1);

    }

  fp = arg;

  pthread_barrier_wait (&b);

  pthread_barrier_wait (&b);

  if (nsigs != TOTAL_SIGS)

    {

      puts ("barrier_wait prematurely returns");

      exit (1);

    }

  return NULL;

}