From: Bruno Turcksin <bruno.turcksin@gmail.com>
Date: Mon, 18 Dec 2017 00:12:18 +0000 (-0500)
Subject: Add move constructor to TrilinosWrappers::SparsityPattern
X-Git-Tag: v9.0.0-rc1~646^2~1
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=39be46a39e50178c118d766a1a6a7493b37b7600;p=dealii.git

Add move constructor to TrilinosWrappers::SparsityPattern
---

diff --git a/include/deal.II/lac/trilinos_sparsity_pattern.h b/include/deal.II/lac/trilinos_sparsity_pattern.h
index 7755784741..2ce1494d10 100644
--- a/include/deal.II/lac/trilinos_sparsity_pattern.h
+++ b/include/deal.II/lac/trilinos_sparsity_pattern.h
@@ -316,6 +316,12 @@ namespace TrilinosWrappers
                      const size_type               n,
                      const std::vector<size_type> &n_entries_per_row);
 
+    /**
+     * Move constructor. Create a new sparse matrix by stealing the internal
+     * data.
+     */
+    SparsityPattern (SparsityPattern &&other);
+
     /**
      * Copy constructor. Sets the calling sparsity pattern to be the same as
      * the input sparsity pattern.
diff --git a/source/lac/trilinos_sparsity_pattern.cc b/source/lac/trilinos_sparsity_pattern.cc
index 98da5f3e1a..dbf1802db7 100644
--- a/source/lac/trilinos_sparsity_pattern.cc
+++ b/source/lac/trilinos_sparsity_pattern.cc
@@ -145,6 +145,16 @@ namespace TrilinosWrappers
   }
 
 
+
+  SparsityPattern::SparsityPattern (SparsityPattern &&other)
+    :
+    Subscriptor(std::move(other)),
+    column_space_map(std::move(other.column_space_map)),
+    graph(std::move(other.graph)),
+    nonlocal_graph(std::move(other.nonlocal_graph))
+  {}
+
+
   // Copy function only works if the
   // sparsity pattern is empty.
   SparsityPattern::SparsityPattern (const SparsityPattern &input_sparsity)
diff --git a/tests/trilinos/sparsity_pattern_04.cc b/tests/trilinos/sparsity_pattern_04.cc
new file mode 100644
index 0000000000..f45898ec1f
--- /dev/null
+++ b/tests/trilinos/sparsity_pattern_04.cc
@@ -0,0 +1,51 @@
+// ---------------------------------------------------------------------
+//
+// Copyright (C) 2017 by the deal.II authors
+//
+// This file is part of the deal.II library.
+//
+// The deal.II library is free software; you can use it, redistribute
+// it, and/or modify it under the terms of the GNU Lesser General
+// Public License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+// The full text of the license can be found in the file LICENSE at
+// the top level of the deal.II distribution.
+//
+// ---------------------------------------------------------------------
+
+
+#include "../tests.h"
+#include <deal.II/lac/trilinos_sparsity_pattern.h>
+#include <deal.II/base/utilities.h>
+
+int main (int argc, char **argv)
+{
+  initlog();
+
+  Utilities::MPI::MPI_InitFinalize mpi_initialization (argc, argv, testing_max_num_threads());
+
+  IndexSet partitioning(3);
+
+  partitioning.add_range(0, 3);
+
+  // Add element (2,1) to the matrix
+  TrilinosWrappers::SparsityPattern A(partitioning);
+  A.add(2,1);
+  A.compress();
+
+  TrilinosWrappers::SparsityPattern B(std::move(A));
+  for (unsigned int i=0; i<3; ++i)
+    for (unsigned int j=0; j<3; ++j)
+      {
+        if ((i == 2) && (j == 1))
+          {
+            AssertThrow(B.exist(i,j) == true, ExcInternalError());
+          }
+        else
+          {
+            AssertThrow(B.exist(i,j) == false, ExcInternalError());
+          }
+      }
+
+  deallog << "OK" << std::endl;
+}
diff --git a/tests/trilinos/sparsity_pattern_04.output b/tests/trilinos/sparsity_pattern_04.output
new file mode 100644
index 0000000000..0fd8fc12f0
--- /dev/null
+++ b/tests/trilinos/sparsity_pattern_04.output
@@ -0,0 +1,2 @@
+
+DEAL::OK