/* 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 <signal.h>

#include <semaphore.h>

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#define N 10

static pthread_t th[N];

static int do_test (void);

#define TEST_FUNCTION do_test ()

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

#define CB(n) \

static void								      \

cb##n (void)								      \

{									      \

  if (th[n] != pthread_self ())						      \

    {									      \

      write_message ("wrong callback\n");				      \

      _exit (1);							      \

    }									      \

}

CB (0)

CB (1)

CB (2)

CB (3)

CB (4)

CB (5)

CB (6)

CB (7)

CB (8)

CB (9)

static void (*cbs[]) (void) =

{

  cb0, cb1, cb2, cb3, cb4, cb5, cb6, cb7, cb8, cb9

};

static __thread void (*fp) (void) __attribute__ ((tls_model ("local-exec")));

static sem_t s;

#define THE_SIG SIGUSR1

static void

handler (int sig)

{

  if (sig != THE_SIG)

    {

      write_message ("wrong signal\n");

      _exit (1);

    }

  fp ();

  if (sem_post (&s) != 0)

    {

      write_message ("sem_post failed\n");

      _exit (1);

    }

}

static pthread_barrier_t b;

#define TOTAL_SIGS 1000

static int nsigs;

static void *

tf (void *arg)

{

  fp = arg;

  pthread_barrier_wait (&b);

  pthread_barrier_wait (&b);

  if (nsigs != TOTAL_SIGS)

    {

      puts ("barrier_wait prematurely returns");

      exit (1);

    }

  return NULL;

}

int

do_test (void)

{

  if (pthread_barrier_init (&b, NULL, N + 1) != 0)

    {

      puts ("barrier_init failed");

      exit (1);

    }

  if (sem_init (&s, 0, 0) != 0)

    {

      puts ("sem_init failed");

      exit (1);

    }

  struct sigaction sa;

  sa.sa_handler = handler;

  sigemptyset (&sa.sa_mask);

  sa.sa_flags = 0;

  if (sigaction (THE_SIG, &sa, NULL) != 0)

    {

      puts ("sigaction failed");

      exit (1);

    }

  pthread_attr_t a;

  if (pthread_attr_init (&a) != 0)

    {

      puts ("attr_init failed");

      exit (1);

    }

  if (pthread_attr_setstacksize (&a, 1 * 1024 * 1024) != 0)

    {

      puts ("attr_setstacksize failed");

      return 1;

    }

  int i;

  for (i = 0; i < N; ++i)

    if (pthread_create (&th[i], &a, tf, cbs[i]) != 0)

      {

	puts ("pthread_create failed");

	exit (1);

      }

  if (pthread_attr_destroy (&a) != 0)

    {

      puts ("attr_destroy failed");

      exit (1);

    }

  pthread_barrier_wait (&b);

  sigset_t ss;

  sigemptyset (&ss);

  sigaddset (&ss, THE_SIG);

  if (pthread_sigmask (SIG_BLOCK, &ss, NULL) != 0)

    {

      puts ("pthread_sigmask failed");

      exit (1);

    }

  /* Start sending signals.  */

  for (i = 0; i < TOTAL_SIGS; ++i)

    {

      if (kill (getpid (), THE_SIG) != 0)

	{

	  puts ("kill failed");

	  exit (1);

	}

      if (TEMP_FAILURE_RETRY (sem_wait (&s)) != 0)

	{

	  puts ("sem_wait failed");

	  exit (1);

	}

      ++nsigs;

    }

  pthread_barrier_wait (&b);

  for (i = 0; i < N; ++i)

    if (pthread_join (th[i], NULL) != 0)

      {

	puts ("join failed");

	exit (1);

      }

  return 0;

}