rev 8500 : 8087183: Fix call to inline function is_oop in header debugInfo.hpp.

   1 /*
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   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   6  * under the terms of the GNU General Public License version 2 only, as
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  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).
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  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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  24 
  25 #ifndef SHARE_VM_CODE_DEBUGINFO_HPP
  26 #define SHARE_VM_CODE_DEBUGINFO_HPP
  27 
  28 #include "code/compressedStream.hpp"
  29 #include "code/location.hpp"
  30 #include "code/nmethod.hpp"
  31 #include "code/oopRecorder.hpp"
  32 #include "runtime/stackValue.hpp"
  33 #include "utilities/growableArray.hpp"
  34 
  35 // Classes used for serializing debugging information.
  36 // These abstractions are introducted to provide symmetric
  37 // read and write operations.
  38 
  39 // ScopeValue        describes the value of a variable/expression in a scope
  40 // - LocationValue   describes a value in a given location (in frame or register)
  41 // - ConstantValue   describes a constant
  42 
  43 class ConstantOopReadValue;
  44 
  45 class ScopeValue: public ResourceObj {
  46  public:
  47   // Testers
  48   virtual bool is_location() const { return false; }
  49   virtual bool is_object() const { return false; }
  50   virtual bool is_constant_int() const { return false; }
  51   virtual bool is_constant_double() const { return false; }
  52   virtual bool is_constant_long() const { return false; }
  53   virtual bool is_constant_oop() const { return false; }
  54   virtual bool equals(ScopeValue* other) const { return false; }
  55 
  56   ConstantOopReadValue* as_ConstantOopReadValue() {
  57     assert(is_constant_oop(), "must be");
  58     return (ConstantOopReadValue*) this;
  59   }
  60 
  61   // Serialization of debugging information
  62   virtual void write_on(DebugInfoWriteStream* stream) = 0;
  63   static ScopeValue* read_from(DebugInfoReadStream* stream);
  64 };
  65 
  66 
  67 // A Location value describes a value in a given location; i.e. the corresponding
  68 // logical entity (e.g., a method temporary) lives in this location.
  69 
  70 class LocationValue: public ScopeValue {
  71  private:
  72   Location  _location;
  73  public:
  74   LocationValue(Location location)           { _location = location; }
  75   bool      is_location() const              { return true; }
  76   Location  location() const                 { return _location; }
  77 
  78   // Serialization of debugging information
  79   LocationValue(DebugInfoReadStream* stream);
  80   void write_on(DebugInfoWriteStream* stream);
  81 
  82   // Printing
  83   void print_on(outputStream* st) const;
  84 };
  85 
  86 
  87 // An ObjectValue describes an object eliminated by escape analysis.
  88 
  89 class ObjectValue: public ScopeValue {
  90  private:
  91   int                        _id;
  92   ScopeValue*                _klass;
  93   GrowableArray<ScopeValue*> _field_values;
  94   Handle                     _value;
  95   bool                       _visited;
  96 
  97  public:
  98   ObjectValue(int id, ScopeValue* klass)
  99      : _id(id)
 100      , _klass(klass)
 101      , _field_values()
 102      , _value()
 103      , _visited(false) {
 104     assert(klass->is_constant_oop(), "should be constant java mirror oop");
 105   }
 106 
 107   ObjectValue(int id)
 108      : _id(id)
 109      , _klass(NULL)
 110      , _field_values()
 111      , _value()
 112      , _visited(false) {}
 113 
 114   // Accessors
 115   bool                        is_object() const         { return true; }
 116   int                         id() const                { return _id; }
 117   ScopeValue*                 klass() const             { return _klass; }
 118   GrowableArray<ScopeValue*>* field_values()            { return &_field_values; }
 119   ScopeValue*                 field_at(int i) const     { return _field_values.at(i); }
 120   int                         field_size()              { return _field_values.length(); }
 121   Handle                      value() const             { return _value; }
 122   bool                        is_visited() const        { return _visited; }
 123 
 124   void                        set_value(oop value)      { _value = Handle(value); }
 125   void                        set_visited(bool visited) { _visited = false; }
 126 
 127   // Serialization of debugging information
 128   void read_object(DebugInfoReadStream* stream);
 129   void write_on(DebugInfoWriteStream* stream);
 130 
 131   // Printing
 132   void print_on(outputStream* st) const;
 133   void print_fields_on(outputStream* st) const;
 134 };
 135 
 136 
 137 // A ConstantIntValue describes a constant int; i.e., the corresponding logical entity
 138 // is either a source constant or its computation has been constant-folded.
 139 
 140 class ConstantIntValue: public ScopeValue {
 141  private:
 142   jint _value;
 143  public:
 144   ConstantIntValue(jint value)         { _value = value; }
 145   jint value() const                   { return _value;  }
 146   bool is_constant_int() const         { return true;    }
 147   bool equals(ScopeValue* other) const { return false;   }
 148 
 149   // Serialization of debugging information
 150   ConstantIntValue(DebugInfoReadStream* stream);
 151   void write_on(DebugInfoWriteStream* stream);
 152 
 153   // Printing
 154   void print_on(outputStream* st) const;
 155 };
 156 
 157 class ConstantLongValue: public ScopeValue {
 158  private:
 159   jlong _value;
 160  public:
 161   ConstantLongValue(jlong value)       { _value = value; }
 162   jlong value() const                  { return _value;  }
 163   bool is_constant_long() const        { return true;    }
 164   bool equals(ScopeValue* other) const { return false;   }
 165 
 166   // Serialization of debugging information
 167   ConstantLongValue(DebugInfoReadStream* stream);
 168   void write_on(DebugInfoWriteStream* stream);
 169 
 170   // Printing
 171   void print_on(outputStream* st) const;
 172 };
 173 
 174 class ConstantDoubleValue: public ScopeValue {
 175  private:
 176   jdouble _value;
 177  public:
 178   ConstantDoubleValue(jdouble value)   { _value = value; }
 179   jdouble value() const                { return _value;  }
 180   bool is_constant_double() const      { return true;    }
 181   bool equals(ScopeValue* other) const { return false;   }
 182 
 183   // Serialization of debugging information
 184   ConstantDoubleValue(DebugInfoReadStream* stream);
 185   void write_on(DebugInfoWriteStream* stream);
 186 
 187   // Printing
 188   void print_on(outputStream* st) const;
 189 };
 190 
 191 // A ConstantOopWriteValue is created by the compiler to
 192 // be written as debugging information.
 193 
 194 class ConstantOopWriteValue: public ScopeValue {
 195  private:
 196   jobject _value;
 197  public:
 198   ConstantOopWriteValue(jobject value) { _value = value; }
 199   jobject value() const                { return _value;  }
 200   bool is_constant_oop() const         { return true;    }
 201   bool equals(ScopeValue* other) const { return false;   }
 202 
 203   // Serialization of debugging information
 204   void write_on(DebugInfoWriteStream* stream);
 205 
 206   // Printing
 207   void print_on(outputStream* st) const;
 208 };
 209 
 210 // A ConstantOopReadValue is created by the VM when reading
 211 // debug information
 212 
 213 class ConstantOopReadValue: public ScopeValue {
 214  private:
 215   Handle _value;
 216  public:
 217   Handle value() const                 { return _value;  }
 218   bool is_constant_oop() const         { return true;    }
 219   bool equals(ScopeValue* other) const { return false;   }
 220 
 221   // Serialization of debugging information
 222   ConstantOopReadValue(DebugInfoReadStream* stream);
 223   void write_on(DebugInfoWriteStream* stream);
 224 
 225   // Printing
 226   void print_on(outputStream* st) const;
 227 };
 228 
 229 // MonitorValue describes the pair used for monitor_enter and monitor_exit.
 230 
 231 class MonitorValue: public ResourceObj {
 232  private:
 233   ScopeValue* _owner;
 234   Location    _basic_lock;
 235   bool        _eliminated;
 236  public:
 237   // Constructor
 238   MonitorValue(ScopeValue* owner, Location basic_lock, bool eliminated = false);
 239 
 240   // Accessors
 241   ScopeValue*  owner()      const { return _owner; }
 242   Location     basic_lock() const { return _basic_lock;  }
 243   bool         eliminated() const { return _eliminated; }
 244 
 245   // Serialization of debugging information
 246   MonitorValue(DebugInfoReadStream* stream);
 247   void write_on(DebugInfoWriteStream* stream);
 248 
 249   // Printing
 250   void print_on(outputStream* st) const;
 251 };
 252 
 253 // DebugInfoReadStream specializes CompressedReadStream for reading
 254 // debugging information. Used by ScopeDesc.
 255 
 256 class DebugInfoReadStream : public CompressedReadStream {
 257  private:
 258   const nmethod* _code;
 259   const nmethod* code() const { return _code; }
 260   GrowableArray<ScopeValue*>* _obj_pool;
 261  public:
 262   DebugInfoReadStream(const nmethod* code, int offset, GrowableArray<ScopeValue*>* obj_pool = NULL) :
 263     CompressedReadStream(code->scopes_data_begin(), offset) {
 264     _code = code;
 265     _obj_pool = obj_pool;
 266 
 267   } ;
 268 
 269   oop read_oop() {
 270     oop o = code()->oop_at(read_int());
 271     assert(o == NULL || o->is_oop(), "oop only");
 272     return o;
 273   }
 274   Method* read_method() {
 275     Method* o = (Method*)(code()->metadata_at(read_int()));
 276     // is_metadata() is a faster check than is_metaspace_object()
 277     assert(o == NULL || o->is_metadata(), "meta data only");
 278     return o;
 279   }
 280   ScopeValue* read_object_value();
 281   ScopeValue* get_cached_object();
 282   // BCI encoding is mostly unsigned, but -1 is a distinguished value
 283   int read_bci() { return read_int() + InvocationEntryBci; }
 284 };
 285 
 286 // DebugInfoWriteStream specializes CompressedWriteStream for
 287 // writing debugging information. Used by ScopeDescRecorder.
 288 
 289 class DebugInfoWriteStream : public CompressedWriteStream {
 290  private:
 291   DebugInformationRecorder* _recorder;
 292   DebugInformationRecorder* recorder() const { return _recorder; }
 293  public:
 294   DebugInfoWriteStream(DebugInformationRecorder* recorder, int initial_size);
 295   void write_handle(jobject h);
 296   void write_bci(int bci) { write_int(bci - InvocationEntryBci); }
 297 
 298   void write_metadata(Metadata* m);
 299 };
 300 
 301 #endif // SHARE_VM_CODE_DEBUGINFO_HPP
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