1 /*
   2  * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_SERVICES_DIAGNOSTICARGUMENT_HPP
  26 #define SHARE_VM_SERVICES_DIAGNOSTICARGUMENT_HPP
  27 
  28 #include "classfile/vmSymbols.hpp"
  29 #include "memory/allocation.hpp"
  30 #include "runtime/os.hpp"
  31 #include "runtime/thread.hpp"
  32 #include "utilities/exceptions.hpp"
  33 
  34 class GenDCmdArgument : public ResourceObj {
  35 protected:
  36   GenDCmdArgument* _next;
  37   const char*      _name;
  38   const char*      _description;
  39   const char*      _type;
  40   const char*      _default_string;
  41   bool             _is_set;
  42   bool             _is_mandatory;
  43   GenDCmdArgument(const char* name, const char* description, const char* type,
  44                   const char* default_string, bool mandatory) {
  45     _name = name;
  46     _description = description;
  47     _type = type;
  48     _default_string = default_string;
  49     _is_mandatory = mandatory;
  50     _is_set = false;
  51   };
  52 public:
  53   const char* name() { return _name; }
  54   const char* description() { return _description; }
  55   const char* type() { return _type; }
  56   const char* default_string() { return _default_string; }
  57   bool is_set() { return _is_set; }
  58   void set_is_set(bool b) { _is_set = b; }
  59   bool is_mandatory() { return _is_mandatory; }
  60   bool has_value() { return _is_set || _default_string != NULL; }
  61   bool has_default() { return _default_string != NULL; }
  62   void read_value(const char* str, size_t len, TRAPS);
  63   virtual void parse_value(const char* str, size_t len, TRAPS) = 0;
  64   virtual void init_value(TRAPS) = 0;
  65   virtual void reset(TRAPS) = 0;
  66   virtual void cleanup() = 0;
  67   void set_next(GenDCmdArgument* arg) {
  68     _next = arg;
  69   }
  70   GenDCmdArgument* next() {
  71     return _next;
  72   }
  73 };
  74 
  75 template <class ArgType> class DCmdArgument: public GenDCmdArgument {
  76 private:
  77   ArgType _value;
  78 public:
  79   DCmdArgument(const char* name, const char* description, const char* type,
  80                bool mandatory) :
  81                GenDCmdArgument(name, description, type, NULL, mandatory) { }
  82   DCmdArgument(const char* name, const char* description, const char* type,
  83                bool mandatory, const char* defaultvalue) :
  84                GenDCmdArgument(name, description, type, defaultvalue, mandatory)
  85                { }
  86   ~DCmdArgument() { destroy_value(); }
  87   ArgType value() { return _value;}
  88   void set_value(ArgType v) { _value = v; }
  89   void reset(TRAPS) {
  90     destroy_value();
  91     init_value(CHECK);
  92     _is_set = false;
  93   }
  94   void cleanup() {
  95     destroy_value();
  96   }
  97   void parse_value(const char* str, size_t len, TRAPS);
  98   void init_value(TRAPS);
  99   void destroy_value();
 100 };
 101 
 102 #endif  /* SHARE_VM_SERVICES_DIAGNOSTICARGUMENT_HPP */