Adds support for collecting statistics about code and its metadata.

src/objects.h

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 
 #include "src/assert-scope.h"
@@ skipping 4430 matching lines @@
   // offset and source position.
   DECL_ACCESSORS(source_position_table, ByteArray)
 
   DECLARE_CAST(BytecodeArray)
 
   // Dispatched behavior.
   inline int BytecodeArraySize();
 
   inline int instruction_size();
 
+  // Returns the size of bytecode and its metadata. This includes the size of
+  // bytecode, constant pool, source position table, and handler table.
+  inline int SizeIncludingMetadata();
+
   int SourcePosition(int offset);
   int SourceStatementPosition(int offset);
 
   DECLARE_PRINTER(BytecodeArray)
   DECLARE_VERIFIER(BytecodeArray)
 
   void Disassemble(std::ostream& os);
 
   void CopyBytecodesTo(BytecodeArray* to);
 
@@ skipping 657 matching lines @@
 
   // Returns the address of the first instruction.
   inline byte* instruction_start();
 
   // Returns the address right after the last instruction.
   inline byte* instruction_end();
 
   // Returns the size of the instructions, padding, and relocation information.
   inline int body_size();
 
+  // Returns the size of code and its metadata. This includes the size of code
+  // relocation information, deoptimization data and handler table.
+  inline int SizeIncludingMetadata();
+
   // Returns the address of the first relocation info (read backwards!).
   inline byte* relocation_start();
 
   // Code entry point.
   inline byte* entry();
 
   // Returns true if pc is inside this object's instructions.
   inline bool contains(byte* pc);
 
   // Relocate the code by delta bytes. Called to signal that this code
@@ skipping 211 matching lines @@
 };
 
 class AbstractCode : public HeapObject {
  public:
   // All code kinds and INTERPRETED_FUNCTION.
   enum Kind {
 #define DEFINE_CODE_KIND_ENUM(name) name,
     CODE_KIND_LIST(DEFINE_CODE_KIND_ENUM)
 #undef DEFINE_CODE_KIND_ENUM
         INTERPRETED_FUNCTION,
+    NUMBER_OF_KINDS
   };
 
+  static const char* Kind2String(Kind kind);
+
   int SourcePosition(int offset);
   int SourceStatementPosition(int offset);
 
   // Returns the address of the first instruction.
   inline Address instruction_start();
 
   // Returns the address right after the last instruction.
   inline Address instruction_end();
 
-  // Returns the of the code instructions.
+  // Returns the size of the code instructions.
   inline int instruction_size();
 
+  // Returns the size of instructions and the metadata.
+  inline int SizeIncludingMetadata();
+
   // Returns true if pc is inside this object's instructions.
   inline bool contains(byte* pc);
 
   // Returns the AbstractCode::Kind of the code.
   inline Kind kind();
 
   // Calculate the size of the code object to report for log events. This takes
   // the layout of the code object into account.
   inline int ExecutableSize();
 
@@ skipping 5366 matching lines @@
     }
     return value;
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_