--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1Log.hpp	Fri Apr 13 01:59:38 2012 +0200
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2012, 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.
+ *
+ */
+
+#ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1LOG_HPP
+#define SHARE_VM_GC_IMPLEMENTATION_G1_G1LOG_HPP
+
+#include "memory/allocation.hpp"
+
+class G1Log : public AllStatic {
+  typedef enum {
+    LevelNone,
+    LevelFine,
+    LevelFiner,
+    LevelFinest
+  } LogLevel;
+
+  static LogLevel _level;
+
+ public:
+  inline static bool fine() {
+    return _level >= LevelFine;
+  }
+
+  inline static bool finer() {
+    return _level >= LevelFiner;
+  }
+
+  inline static bool finest() {
+    return _level == LevelFinest;
+  }
+
+  static void init();
+};
+
+#endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1LOG_HPP