--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/gc/g1/heapRegionType.cpp	Wed May 13 15:16:06 2015 +0200
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2014, 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/g1/heapRegionType.hpp"
+
+bool HeapRegionType::is_valid(Tag tag) {
+  switch (tag) {
+    case FreeTag:
+    case EdenTag:
+    case SurvTag:
+    case StartsHumongousTag:
+    case ContinuesHumongousTag:
+    case OldTag:
+      return true;
+  }
+  return false;
+}
+
+const char* HeapRegionType::get_str() const {
+  hrt_assert_is_valid(_tag);
+  switch (_tag) {
+    case FreeTag:               return "FREE";
+    case EdenTag:               return "EDEN";
+    case SurvTag:               return "SURV";
+    case StartsHumongousTag:    return "HUMS";
+    case ContinuesHumongousTag: return "HUMC";
+    case OldTag:                return "OLD";
+  }
+  ShouldNotReachHere();
+  // keep some compilers happy
+  return NULL;
+}
+
+const char* HeapRegionType::get_short_str() const {
+  hrt_assert_is_valid(_tag);
+  switch (_tag) {
+    case FreeTag:               return "F";
+    case EdenTag:               return "E";
+    case SurvTag:               return "S";
+    case StartsHumongousTag:    return "HS";
+    case ContinuesHumongousTag: return "HC";
+    case OldTag:                return "O";
+  }
+  ShouldNotReachHere();
+  // keep some compilers happy
+  return NULL;
+}