/* Test that gettext() in multithreaded applications works correctly if

   different threads operate in different locales with the same encoding.

   Copyright (C) 2005-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Bruno Haible <bruno@clisp.org>, 2005.

   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 <libintl.h>

#include <locale.h>

#include <pthread.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

/* Set to 1 if the program is not behaving correctly.  */

int result;

/* Denotes which thread should run next.  */

int flipflop;

/* Lock and wait queue used to switch between the threads.  */

pthread_mutex_t lock;

pthread_cond_t waitqueue;

/* Waits until the flipflop has a given value.

   Before the call, the lock is unlocked.  After the call, it is locked.  */

static void

waitfor (int value)

{

  if (pthread_mutex_lock (&lock))

    exit (10);

  while (flipflop != value)

    if (pthread_cond_wait (&waitqueue, &lock))

      exit (11);

}

/* Sets the flipflop to a given value.

   Before the call, the lock is locked.  After the call, it is unlocked.  */

static void

setto (int value)

{

  flipflop = value;

  if (pthread_cond_signal (&waitqueue))

    exit (20);

  if (pthread_mutex_unlock (&lock))

    exit (21);

}

void *

thread1_execution (void *arg)

{

  char *s;

  waitfor (1);

  uselocale (newlocale (LC_ALL_MASK, "de_DE.ISO-8859-1", NULL));

  setto (2);

  waitfor (1);

  s = gettext ("beauty");

  puts (s);

  if (strcmp (s, "Sch\366nheit"))

    {

      fprintf (stderr, "thread 1 call 1 returned: %s\n", s);

      result = 1;

    }

  setto (2);

  waitfor (1);

  s = gettext ("beauty");

  puts (s);

  if (strcmp (s, "Sch\366nheit"))

    {

      fprintf (stderr, "thread 1 call 2 returned: %s\n", s);

      result = 1;

    }

  setto (2);

  return NULL;

}

void *

thread2_execution (void *arg)

{

  char *s;

  waitfor (2);

  uselocale (newlocale (LC_ALL_MASK, "fr_FR.ISO-8859-1", NULL));

  setto (1);

  waitfor (2);

  s = gettext ("beauty");

  puts (s);

  if (strcmp (s, "beaut\351"))

    {

      fprintf (stderr, "thread 2 call 1 returned: %s\n", s);

      result = 1;

    }

  setto (1);

  waitfor (2);

  s = gettext ("beauty");

  puts (s);

  if (strcmp (s, "beaut\351"))

    {

      fprintf (stderr, "thread 2 call 2 returned: %s\n", s);

      result = 1;

    }

  setto (1);

  return NULL;

}

int

main (void)

{

  pthread_t thread1;

  pthread_t thread2;

  unsetenv ("LANGUAGE");

  unsetenv ("OUTPUT_CHARSET");

  textdomain ("multithread");

  bindtextdomain ("multithread", OBJPFX "domaindir");

  result = 0;

  flipflop = 1;

  if (pthread_mutex_init (&lock, NULL))

    exit (2);

  if (pthread_cond_init (&waitqueue, NULL))

    exit (2);

  if (pthread_create (&thread1, NULL, &thread1_execution, NULL))

    exit (2);

  if (pthread_create (&thread2, NULL, &thread2_execution, NULL))

    exit (2);

  if (pthread_join (thread2, NULL))

    exit (3);

  return result;

}