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// 2002-01-23  Loren J. Rittle <rittle@labs.mot.com> <ljrittle@acm.org>

// Adpated from libstdc++/5444 submitted by markus.breuer@materna.de

//

// Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc.

//

// This file is part of the GNU ISO C++ Library.  This library is free

// software; you can redistribute it and/or modify it under the

// terms of the GNU General Public License as published by the

// Free Software Foundation; either version 2, or (at your option)

// any later version.

//

// This 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 General Public License for more details.

//

// You should have received a copy of the GNU General Public License along

// with this library; see the file COPYING.  If not, write to the Free

// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,

// USA.

// { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* alpha*-*-osf* } }

// { dg-options "-pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* alpha*-*-osf* } }

// { dg-options "-pthreads" { target *-*-solaris* } }

#include <string>

#include <map>

#include <vector>

// Do not include <pthread.h> explicitly; if threads are properly

// configured for the port, then it is picked up free from STL headers.

const int max_thread_count = 8;

const int loops = 100000;

const char* my_default = "Hallo Welt!";

const std::size_t upper_limit = 2500;

const std::size_t lower_limit = 1000;

typedef char charT;

typedef std::string String;

typedef String MyType;

void*

thread_main (void*)

{

  typedef std::map<unsigned int,MyType> Map;

  typedef Map::value_type Value_Pair;

  Map myMap;

  for (int loop = 0; loop < loops; loop++)

    {

      String& str = myMap[loop];

      str.append (my_default);

      myMap.insert (Value_Pair (loop, str));

      if (myMap.size () > upper_limit)

        {

          while (myMap.size () > lower_limit)

            {

              Map::iterator it = myMap.begin ();

              myMap.erase (it);

            }

        }

    }

  return 0;

}

int

main (void)

{

  pthread_t tid[max_thread_count];

#if defined(__sun) && defined(__svr4__) && _XOPEN_VERSION >= 500

  pthread_setconcurrency (max_thread_count);

#endif

  for (int i = 0; i < max_thread_count; i++)

    pthread_create (&tid[i], NULL, thread_main, 0);

  for (int i = 0; i < max_thread_count; i++)

    pthread_join (tid[i], NULL);

  return 0;

}