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

[SVN r41370]

example/doc_allocator.cpp

@@ -0,0 +1,43 @@
+//////////////////////////////////////////////////////////////////////////////
+//
+// (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/detail/config_begin.hpp>
+#include <boost/interprocess/detail/workaround.hpp>
+//[doc_allocator
+#include <boost/interprocess/managed_shared_memory.hpp>
+#include <boost/interprocess/allocators/allocator.hpp>
+#include <cassert>
+
+using namespace boost::interprocess;
+
+int main ()
+{
+   shared_memory_object::remove("MySharedMemory");
+
+   //Create shared memory
+   managed_shared_memory segment(create_only, 
+                                 "MySharedMemory",  //segment name
+                                 65536);
+
+   //Create an allocator that allocates ints from the managed segment
+   allocator<int, managed_shared_memory::segment_manager>
+      allocator_instance(segment.get_segment_manager());
+
+   //Copy constructed allocator is equal
+   allocator<int, managed_shared_memory::segment_manager>
+      allocator_instance2(allocator_instance);
+   assert(allocator_instance2 == allocator_instance);
+
+   //Allocate and deallocate memory for 100 ints
+   allocator_instance2.deallocate(allocator_instance.allocate(100), 100);
+
+   return 0;
+}
+//]
+#include <boost/interprocess/detail/config_end.hpp>