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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;
}