libstdc++-v3/testsuite/thread/pthread6.cc

   1 // 2002-01-23  Loren J. Rittle <rittle@labs.mot.com> <ljrittle@acm.org>
   2 // Adpated from libstdc++/5444 submitted by markus.breuer@materna.de
   3 //
   4 // Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007
   5 // Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 2, or (at your option)
  11 // any later version.
  12 //
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING.  If not, write to the Free
  20 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  21 // USA.
  22
  23 // { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* alpha*-*-osf* } }
  24 // { dg-options "-pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* alpha*-*-osf* } }
  25 // { dg-options "-pthreads" { target *-*-solaris* } }
  26
  27 #include <string>
  28 #include <map>
  29 #include <vector>
  30 #include <pthread.h>
  31
  32 const int max_thread_count = 8;
  33 const int loops = 100000;
  34
  35 const char* my_default = "Hallo Welt!";
  36
  37 const std::size_t upper_limit = 2500;
  38 const std::size_t lower_limit = 1000;
  39
  40 typedef char charT;
  41
  42 typedef std::string String;
  43
  44 typedef String MyType;
  45
  46 void*
  47 thread_main (void*)
  48 {
  49   typedef std::map<unsigned int,MyType> Map;
  50   typedef Map::value_type Value_Pair;
  51   Map myMap;
  52
  53   for (int loop = 0; loop < loops; loop++)
  54     {
  55       String& str = myMap[loop];
  56       str.append (my_default);
  57       myMap.insert (Value_Pair (loop, str));
  58
  59       if (myMap.size () > upper_limit)
  60         {
  61           while (myMap.size () > lower_limit)
  62             {
  63               Map::iterator it = myMap.begin ();
  64               myMap.erase (it);
  65             }
  66         }
  67     }
  68
  69   return 0;
  70 }
  71
  72 int
  73 main (void)
  74 {
  75   pthread_t tid[max_thread_count];
  76
  77 #if defined(__sun) && defined(__svr4__) && _XOPEN_VERSION >= 500
  78   pthread_setconcurrency (max_thread_count);
  79 #endif
  80
  81   for (int i = 0; i < max_thread_count; i++)
  82     pthread_create (&tid[i], NULL, thread_main, 0);
  83
  84   for (int i = 0; i < max_thread_count; i++)
  85     pthread_join (tid[i], NULL);
  86
  87   return 0;
  88 }