libstdc++-v3/testsuite/thread/pthread4.cc

   1 // 2002-01-23  Loren J. Rittle <rittle@labs.mot.com> <ljrittle@acm.org>
   2 // Adapted from http://gcc.gnu.org/ml/gcc-bugs/2002-01/msg00679.html
   3 // which was adapted from pthread1.cc by Mike Lu <MLu@dynamicsoft.com>
   4 //
   5 // Copyright (C) 2002 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  21 // USA.
  22
  23 // { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin } }
  24 // { dg-options "-pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* } }
  25 // { dg-options "-pthreads" { target *-*-solaris* } }
  26
  27 #include <string>
  28 #include <list>
  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 using namespace std;
  35
  36 static list<string> foo;
  37 static pthread_mutex_t fooLock = PTHREAD_MUTEX_INITIALIZER;
  38 static unsigned max_size = 10;
  39 #if defined(__CYGWIN__)
  40 static int iters = 10000;
  41 #else
  42 static int iters = 300000;
  43 #endif
  44
  45 void*
  46 produce (void*)
  47 {
  48   for (int num = 0; num < iters; )
  49     {
  50       string str ("test string");
  51
  52       pthread_mutex_lock (&fooLock);
  53       if (foo.size () < max_size)
  54         {
  55           foo.push_back (str);
  56           num++;
  57         }
  58       pthread_mutex_unlock (&fooLock);
  59     }
  60
  61   return 0;
  62 }
  63
  64 void*
  65 consume (void*)
  66 {
  67   for (int num = 0; num < iters; )
  68     {
  69       pthread_mutex_lock (&fooLock);
  70       while (foo.size () > 0)
  71         {
  72           string str = foo.back ();
  73           foo.pop_back ();
  74           num++;
  75         }
  76       pthread_mutex_unlock (&fooLock);
  77     }
  78
  79   return 0;
  80 }
  81
  82 int
  83 main (void)
  84 {
  85 #if defined(__sun) && defined(__svr4__)
  86   pthread_setconcurrency (2);
  87 #endif
  88
  89   pthread_t prod;
  90   pthread_create (&prod, NULL, produce, NULL);
  91   pthread_t cons;
  92   pthread_create (&cons, NULL, consume, NULL);
  93
  94   pthread_join (prod, NULL);
  95   pthread_join (cons, NULL);
  96
  97   return 0;
  98 }
  99 #else
 100 int main (void) {}
 101 #endif