rev 50556 : [mq]: jcmd-cleanups

   1 /*
   2  * Copyright (c) 2012, 2014, 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 StringArrayArgument : public CHeapObj<mtInternal> {
  35 private:
  36   GrowableArray<char*>* _array;
  37 public:
  38   StringArrayArgument();
  39   ~StringArrayArgument();
  40 
  41   void add(const char* str, size_t len);
  42 
  43   GrowableArray<char*>* array() {
  44     return _array;
  45   }
  46 };
  47 
  48 class NanoTimeArgument {
  49 public:
  50   jlong _nanotime;
  51   jlong _time;
  52   char _unit[3];
  53 };
  54 
  55 class MemorySizeArgument {
  56 public:
  57   u8 _size;
  58   u8 _val;
  59   char _multiplier;
  60 };
  61 
  62 class GenDCmdArgument : public ResourceObj {
  63 protected:
  64   GenDCmdArgument* _next;
  65   const char* const _name;
  66   const char* const _description;
  67   const char* const _type;
  68   const char* const _default_string;
  69   bool              _is_set;
  70   const bool        _is_mandatory;
  71   bool             _allow_multiple;
  72   GenDCmdArgument(const char* name, const char* description, const char* type,
  73                   const char* default_string, bool mandatory)
  74     : _next(NULL)
  75     , _name(name)
  76     , _description(description)
  77     , _type(type)
  78     , _default_string(default_string)
  79     , _is_set(false)
  80     , _is_mandatory(mandatory)
  81     ,  _allow_multiple(false) {}
  82 
  83 public:
  84   const char* name() const        { return _name; }
  85   const char* description() const { return _description; }
  86   const char* type() const        { return _type; }
  87   const char* default_string() const { return _default_string; }
  88   bool is_set() const             { return _is_set; }
  89   void set_is_set(bool b)         { _is_set = b; }
  90   bool allow_multiple() const     { return _allow_multiple; }
  91   bool is_mandatory() const       { return _is_mandatory; }
  92   bool has_value() const          { return _is_set || _default_string != NULL; }
  93   bool has_default() const        { return _default_string != NULL; }
  94   void read_value(const char* str, size_t len, TRAPS);
  95   virtual void parse_value(const char* str, size_t len, TRAPS) = 0;
  96   virtual void init_value(TRAPS) = 0;
  97   virtual void reset(TRAPS) = 0;
  98   virtual void cleanup() = 0;
  99   virtual void value_as_str(char* buf, size_t len) const = 0;
 100   void set_next(GenDCmdArgument* arg) {
 101     _next = arg;
 102   }
 103   GenDCmdArgument* next() {
 104     return _next;
 105   }
 106 
 107   void to_string(jlong l, char* buf, size_t len) const;
 108   void to_string(bool b, char* buf, size_t len) const;
 109   void to_string(char* c, char* buf, size_t len) const;
 110   void to_string(NanoTimeArgument n, char* buf, size_t len) const;
 111   void to_string(MemorySizeArgument f, char* buf, size_t len) const;
 112   void to_string(StringArrayArgument* s, char* buf, size_t len) const;
 113 };
 114 
 115 template <class ArgType> class DCmdArgument: public GenDCmdArgument {
 116 private:
 117   ArgType _value;
 118 public:
 119   DCmdArgument(const char* name, const char* description, const char* type,
 120                bool mandatory) :
 121                GenDCmdArgument(name, description, type, NULL, mandatory) { }
 122   DCmdArgument(const char* name, const char* description, const char* type,
 123                bool mandatory, const char* defaultvalue) :
 124                GenDCmdArgument(name, description, type, defaultvalue, mandatory)
 125                { }
 126   ~DCmdArgument() { destroy_value(); }
 127   ArgType value() const { return _value;}
 128   void set_value(ArgType v) { _value = v; }
 129   void reset(TRAPS) {
 130     destroy_value();
 131     init_value(CHECK);
 132     _is_set = false;
 133   }
 134   void cleanup() {
 135     destroy_value();
 136   }
 137   void parse_value(const char* str, size_t len, TRAPS);
 138   void init_value(TRAPS);
 139   void destroy_value();
 140   void value_as_str(char *buf, size_t len) const { to_string(_value, buf, len);}
 141 };
 142 
 143 #endif  /* SHARE_VM_SERVICES_DIAGNOSTICARGUMENT_HPP */
--- EOF ---