--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/gc/shared/generationSpec.cpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2001, 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "gc/serial/defNewGeneration.hpp"
+#include "gc/serial/tenuredGeneration.hpp"
+#include "gc/shared/cardTableRS.hpp"
+#include "gc/shared/generationSpec.hpp"
+#include "memory/binaryTreeDictionary.hpp"
+#include "memory/filemap.hpp"
+#include "runtime/java.hpp"
+#include "utilities/macros.hpp"
+#if INCLUDE_ALL_GCS
+#include "gc/cms/concurrentMarkSweepGeneration.hpp"
+#include "gc/cms/parNewGeneration.hpp"
+#endif // INCLUDE_ALL_GCS
+
+Generation* GenerationSpec::init(ReservedSpace rs, CardTableRS* remset) {
+  switch (name()) {
+    case Generation::DefNew:
+      return new DefNewGeneration(rs, init_size());
+
+    case Generation::MarkSweepCompact:
+      return new TenuredGeneration(rs, init_size(), remset);
+
+#if INCLUDE_ALL_GCS
+    case Generation::ParNew:
+      return new ParNewGeneration(rs, init_size());
+
+    case Generation::ConcurrentMarkSweep: {
+      assert(UseConcMarkSweepGC, "UseConcMarkSweepGC should be set");
+      if (remset == NULL) {
+        vm_exit_during_initialization("Rem set incompatibility.");
+      }
+      // Otherwise
+      // The constructor creates the CMSCollector if needed,
+      // else registers with an existing CMSCollector
+
+      ConcurrentMarkSweepGeneration* g = NULL;
+      g = new ConcurrentMarkSweepGeneration(rs, init_size(), remset);
+
+      g->initialize_performance_counters();
+
+      return g;
+    }
+#endif // INCLUDE_ALL_GCS
+
+    default:
+      guarantee(false, "unrecognized GenerationName");
+      return NULL;
+  }
+}