--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/services/diagnosticArgument.hpp	Wed Dec 14 04:30:57 2011 -0800
@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2011, 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_SERVICES_DIAGNOSTICARGUMENT_HPP
+#define SHARE_VM_SERVICES_DIAGNOSTICARGUMENT_HPP
+
+#include "classfile/vmSymbols.hpp"
+#include "memory/allocation.hpp"
+#include "runtime/os.hpp"
+#include "runtime/thread.hpp"
+#include "utilities/exceptions.hpp"
+
+class GenDCmdArgument : public ResourceObj {
+protected:
+  GenDCmdArgument* _next;
+  const char*      _name;
+  const char*      _description;
+  const char*      _type;
+  const char*      _default_string;
+  bool             _is_set;
+  bool             _is_mandatory;
+  GenDCmdArgument(const char* name, const char* description, const char* type,
+                  const char* default_string, bool mandatory) {
+    _name = name;
+    _description = description;
+    _type = type;
+    _default_string = default_string;
+    _is_mandatory = mandatory;
+    _is_set = false;
+  };
+public:
+  const char* name() { return _name; }
+  const char* description() { return _description; }
+  const char* type() { return _type; }
+  const char* default_string() { return _default_string; }
+  bool is_set() { return _is_set; }
+  void set_is_set(bool b) { _is_set = b; }
+  bool is_mandatory() { return _is_mandatory; }
+  bool has_value() { return _is_set || _default_string != NULL; }
+  bool has_default() { return _default_string != NULL; }
+  void read_value(const char* str, size_t len, TRAPS);
+  virtual void parse_value(const char* str, size_t len, TRAPS) = 0;
+  virtual void init_value(TRAPS) = 0;
+  virtual void reset(TRAPS) = 0;
+  virtual void cleanup() = 0;
+  void set_next(GenDCmdArgument* arg) {
+    _next = arg;
+  }
+  GenDCmdArgument* next() {
+    return _next;
+  }
+};
+
+template <class ArgType> class DCmdArgument: public GenDCmdArgument {
+private:
+  ArgType _value;
+public:
+  DCmdArgument(const char* name, const char* description, const char* type,
+               bool mandatory) :
+               GenDCmdArgument(name, description, type, NULL, mandatory) { }
+  DCmdArgument(const char* name, const char* description, const char* type,
+               bool mandatory, const char* defaultvalue) :
+               GenDCmdArgument(name, description, type, defaultvalue, mandatory)
+               { }
+  ~DCmdArgument() { destroy_value(); }
+  ArgType value() { return _value;}
+  void set_value(ArgType v) { _value = v; }
+  void reset(TRAPS) {
+    destroy_value();
+    init_value(CHECK);
+    _is_set = false;
+  }
+  void cleanup() {
+    destroy_value();
+  }
+  void parse_value(const char* str, size_t len, TRAPS);
+  void init_value(TRAPS);
+  void destroy_value();
+};
+
+#endif  /* SHARE_VM_SERVICES_DIAGNOSTICARGUMENT_HPP */