Full merge from trunk at revision 41356 of entire boost-root tree.

[SVN r41370]

example/doc_upgradable_mutex_shared_data.hpp

@@ -0,0 +1,31 @@
+//////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga 2006-2007. Distributed under the Boost
+// Software License, Version 1.0. (See accompanying file
+// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+// See http://www.boost.org/libs/interprocess for documentation.
+//
+//////////////////////////////////////////////////////////////////////////////
+   #include <boost/interprocess/sync/interprocess_upgradable_mutex.hpp>
+
+   struct shared_data
+   {
+      enum { NumItems = 100 };
+      enum { LineSize = 100 };
+
+      shared_data()
+         :  current_line(0)
+         ,  end_a(false)
+         ,  end_b(false)
+      {}
+
+      //Mutex to protect access to the queue
+      boost::interprocess::interprocess_upgradable_mutex upgradable_mutex;
+
+      //Items to fill
+      char   items[NumItems][LineSize];
+      int    current_line;
+      bool   end_a;
+      bool   end_b;
+   };