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

[SVN r41370]

src/timer.cpp

@@ -0,0 +1,25 @@
+// Copyright (C) 2006 Douglas Gregor <doug.gregor -at- gmail.com>
+
+// Use, modification and distribution is subject to 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)
+#include <boost/mpi/timer.hpp>
+#include <boost/mpi/exception.hpp>
+
+namespace boost { namespace mpi {
+
+bool timer::time_is_global()
+{
+  int* is_global;
+  int found = 0;
+
+  BOOST_MPI_CHECK_RESULT(MPI_Attr_get,
+                         (MPI_COMM_WORLD, MPI_WTIME_IS_GLOBAL, &is_global,
+                          &found));
+  if (!found)
+    return false;
+  else
+    return *is_global != 0;
+}
+
+} } // end namespace boost::mpi