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diff --git a/src/share/vm/runtime/memprofiler.hpp b/src/share/vm/runtime/memprofiler.hpp
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+/*
+ * Copyright 1998 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+// Prints periodic memory usage trace of HotSpot VM
+
+class MemProfilerTask;
+
+class MemProfiler : AllStatic {
+ friend class MemProfilerTask;
+ private:
+  static MemProfilerTask* _task;
+  static FILE* _log_fp;
+  // Do trace (callback from MemProfilerTask and from disengage)
+  static void do_trace()      PRODUCT_RETURN;
+ public:
+  // Start/stop the profiler
+  static void engage()        PRODUCT_RETURN;
+  static void disengage()     PRODUCT_RETURN;
+  // Tester
+  static bool is_active()     PRODUCT_RETURN0;
+};