Wire up profiling budget to the Code object.

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 4854 matching lines @@
   // Used during GC to code a list of code objects to deoptimize.
   inline Object* code_to_deoptimize_link();
   inline void set_code_to_deoptimize_link(Object* value);
   inline Object** code_to_deoptimize_link_slot();
 
   // [gc_metadata]: Field used to hold GC related metadata. The contents of this
   // field does not have to be traced during garbage collection since
   // it is only used by the garbage collector itself.
   DECL_ACCESSORS(gc_metadata, Object)
 
+  // Profiling budget counter to govern when to invoke the runtime profiler.
+  DECL_ACCESSORS(profiling_budget, Cell)
+
+  inline void ResetProfilingBudget(int value);
+
   // [ic_age]: Inline caching age: the value of the Heap::global_ic_age
   // at the moment when this object was created.
   inline void set_ic_age(int count);
   inline int ic_age();
 
   // [prologue_offset]: Offset of the function prologue, used for aging
   // FUNCTIONs and OPTIMIZED_FUNCTIONs.
   inline int prologue_offset();
   inline void set_prologue_offset(int offset);
 
@@ skipping 293 matching lines @@
 
   // Layout description.
   static const int kInstructionSizeOffset = HeapObject::kHeaderSize;
   static const int kRelocationInfoOffset = kInstructionSizeOffset + kIntSize;
   static const int kHandlerTableOffset = kRelocationInfoOffset + kPointerSize;
   static const int kDeoptimizationDataOffset =
       kHandlerTableOffset + kPointerSize;
   static const int kTypeFeedbackInfoOffset =
       kDeoptimizationDataOffset + kPointerSize;
   static const int kGCMetadataOffset = kTypeFeedbackInfoOffset + kPointerSize;
-  static const int kICAgeOffset =
-      kGCMetadataOffset + kPointerSize;
+  static const int kProfilingBudgetOffset = kGCMetadataOffset + kPointerSize;
+  static const int kICAgeOffset = kProfilingBudgetOffset + kPointerSize;
   static const int kFlagsOffset = kICAgeOffset + kIntSize;
   static const int kKindSpecificFlags1Offset = kFlagsOffset + kIntSize;
   static const int kKindSpecificFlags2Offset =
       kKindSpecificFlags1Offset + kIntSize;
   // Note: We might be able to squeeze this into the flags above.
   static const int kPrologueOffset = kKindSpecificFlags2Offset + kIntSize;
 
   static const int kHeaderPaddingStart = kPrologueOffset + kIntSize;
 
   // Add padding to align the instruction start following right after
@@ skipping 5076 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_