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 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 2, or (at your option)
  10 // any later version.
  11 //
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING.  If not, write to the Free
  19 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  20 // USA.
  21
  22 // { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* alpha*-*-osf* } }
  23 // { dg-options "-pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* alpha*-*-osf* } }
  24 // { dg-options "-pthreads" { target *-*-solaris* } }
  25
  26 #include <string>
  27 #include <map>
  28 #include <vector>
  29
  30 // Do not include <pthread.h> explicitly; if threads are properly
  31 // configured for the port, then it is picked up free from STL headers.
  32
  33 #if __GTHREADS
  34
  35 const int max_thread_count = 8;
  36 const int loops = 100000;
  37
  38 const char* my_default = "Hallo Welt!";
  39
  40 const std::size_t upper_limit = 2500;
  41 const std::size_t lower_limit = 1000;
  42
  43 typedef char charT;
  44
  45 typedef std::string String;
  46
  47 typedef String MyType;
  48
  49 void*
  50 thread_main (void*)
  51 {
  52   typedef std::map<unsigned int,MyType> Map;
  53   typedef Map::value_type Value_Pair;
  54   Map myMap;
  55
  56   for (int loop = 0; loop < loops; loop++)
  57     {
  58       String& str = myMap[loop];
  59       str.append (my_default);
  60       myMap.insert (Value_Pair (loop, str));
  61
  62       if (myMap.size () > upper_limit)
  63         {
  64           while (myMap.size () > lower_limit)
  65             {
  66               Map::iterator it = myMap.begin ();
  67               myMap.erase (it);
  68             }
  69         }
  70     }
  71
  72   return 0;
  73 }
  74
  75 int
  76 main (void)
  77 {
  78   pthread_t tid[max_thread_count];
  79
  80 #if defined(__sun) && defined(__svr4__)
  81   pthread_setconcurrency (max_thread_count);
  82 #endif
  83
  84   for (int i = 0; i < max_thread_count; i++)
  85     pthread_create (&tid[i], NULL, thread_main, 0);
  86
  87   for (int i = 0; i < max_thread_count; i++)
  88     pthread_join (tid[i], NULL);
  89
  90   return 0;
  91 }
  92 #else
  93 int main (void) {}
  94 #endif