libstdc++-v3/testsuite/23_containers/map/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, 2009
   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 3, 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 COPYING3.  If not see
  20 // <http://www.gnu.org/licenses/>.
  21
  22 // { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* alpha*-*-osf* mips-sgi-irix6* } }
  23 // { dg-options "-pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* alpha*-*-osf* mips-sgi-irix6* } }
  24 // { dg-options "-pthreads" { target *-*-solaris* } }
  25
  26 #include <string>
  27 #include <map>
  28 #include <vector>
  29 #include <pthread.h>
  30
  31 const int max_thread_count = 8;
  32 const int loops = 100000;
  33
  34 const char* my_default = "Hallo Welt!";
  35
  36 const std::size_t upper_limit = 2500;
  37 const std::size_t lower_limit = 1000;
  38
  39 typedef char charT;
  40
  41 typedef std::string String;
  42
  43 typedef String MyType;
  44
  45 void*
  46 thread_main (void*)
  47 {
  48   typedef std::map<unsigned int,MyType> Map;
  49   typedef Map::value_type Value_Pair;
  50   Map myMap;
  51
  52   for (int loop = 0; loop < loops; loop++)
  53     {
  54       String& str = myMap[loop];
  55       str.append (my_default);
  56       myMap.insert (Value_Pair (loop, str));
  57
  58       if (myMap.size () > upper_limit)
  59         {
  60           while (myMap.size () > lower_limit)
  61             {
  62               Map::iterator it = myMap.begin ();
  63               myMap.erase (it);
  64             }
  65         }
  66     }
  67
  68   return 0;
  69 }
  70
  71 int
  72 main (void)
  73 {
  74   pthread_t tid[max_thread_count];
  75
  76 #if defined(__sun) && defined(__svr4__) && _XOPEN_VERSION >= 500
  77   pthread_setconcurrency (max_thread_count);
  78 #endif
  79
  80   for (int i = 0; i < max_thread_count; i++)
  81     pthread_create (&tid[i], NULL, thread_main, 0);
  82
  83   for (int i = 0; i < max_thread_count; i++)
  84     pthread_join (tid[i], NULL);
  85
  86   return 0;
  87 }