re PR libstdc++/12658 (Thread safety problems in locale::global() and locale::locale())

2004-03-08  Petur Runolfsson  <peturr02@ru.is>

	PR libstdc++/12658
	* testsuite/22_locale/locale/cons/12658_thread.cc: New.

From-SVN: r79128

libstdc++-v3/ChangeLog

+2004-03-08  Petur Runolfsson  <peturr02@ru.is>
+
+	PR libstdc++/12658
+	* testsuite/22_locale/locale/cons/12658_thread.cc: New.
+
 2004-03-08  Paolo Carlini  <pcarlini@suse.de>
 
 	* docs/html/ext/howto.html: Add entry for DR 103 [WP].

libstdc++-v3/testsuite/22_locale/locale/cons/12658_thread.cc

+// { 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* } }
+
+// Copyright (C) 2004 Free Software Foundation
+//
+// 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// 22.1.1.2 locale constructors and destructors [lib.locale.cons]
+
+#include <locale>
+#include <pthread.h>
+ 
+const int max_thread_count = 20;
+//const int max_loop_count = 1000000; // orig value
+const int max_loop_count = 100000;
+const int max_locales = 10;
+ 
+void* thread_main(void*)
+{
+  std::locale loc_c = std::locale::classic();
+  std::locale loc[max_locales];
+  for (int j = 0; j < max_locales; ++j)
+    loc[j] = std::locale(j % 2 ? "en_US" : "fr_FR");
+
+  for (int i = 0; i < max_loop_count; ++i)
+    {
+      int k = i % max_locales;
+      loc[k] = std::locale::global(loc[k]);
+      
+      if (i % 37 == 0)
+	loc[k] = loc[k].combine<std::ctype<char> >(loc_c);
+    }
+
+  return 0;
+}
+ 
+int
+main()
+{
+  pthread_t tid[max_thread_count];
+ 
+  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;
+}