[inspector] cache stack frame for call sites

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 <memory>
 
@@ skipping 4239 matching lines @@
   // Accessors for the constant pool.
   DECL_ACCESSORS(constant_pool, FixedArray)
 
   // Accessors for handler table containing offsets of exception handlers.
   DECL_ACCESSORS(handler_table, FixedArray)
 
   // Accessors for source position table containing mappings between byte code
   // offset and source position.
   DECL_ACCESSORS(source_position_table, ByteArray)
 
+  DECL_ACCESSORS(stack_frame_cache, Object)
+
   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();
@@ skipping 10 matching lines @@
 
   // Bytecode aging
   bool IsOld() const;
   void MakeOlder();
 
   // Layout description.
   static const int kConstantPoolOffset = FixedArrayBase::kHeaderSize;
   static const int kHandlerTableOffset = kConstantPoolOffset + kPointerSize;
   static const int kSourcePositionTableOffset =
       kHandlerTableOffset + kPointerSize;
-  static const int kFrameSizeOffset = kSourcePositionTableOffset + kPointerSize;
+  static const int kStackFrameCacheOffset =
+      kSourcePositionTableOffset + kPointerSize;
+  static const int kFrameSizeOffset = kStackFrameCacheOffset + kPointerSize;
   static const int kParameterSizeOffset = kFrameSizeOffset + kIntSize;
   static const int kInterruptBudgetOffset = kParameterSizeOffset + kIntSize;
   static const int kOSRNestingLevelOffset = kInterruptBudgetOffset + kIntSize;
   static const int kBytecodeAgeOffset = kOSRNestingLevelOffset + kCharSize;
   static const int kHeaderSize = kBytecodeAgeOffset + kCharSize;
 
   // Maximal memory consumption for a single BytecodeArray.
   static const int kMaxSize = 512 * MB;
   // Maximal length of a single BytecodeArray.
   static const int kMaxLength = kMaxSize - kHeaderSize;
@@ skipping 362 matching lines @@
 
   // [handler_table]: Fixed array containing offsets of exception handlers.
   DECL_ACCESSORS(handler_table, FixedArray)
 
   // [deoptimization_data]: Array containing data for deopt.
   DECL_ACCESSORS(deoptimization_data, FixedArray)
 
   // [source_position_table]: ByteArray for the source positions table.
   DECL_ACCESSORS(source_position_table, ByteArray)
 
+  DECL_ACCESSORS(stack_frame_cache, Object)
+
   // [trap_handler_index]: An index into the trap handler's master list of code
   // objects.
   DECL_ACCESSORS(trap_handler_index, Smi)
 
   // [raw_type_feedback_info]: This field stores various things, depending on
   // the kind of the code object.
   //   FUNCTION           => type feedback information.
   //   STUB and ICs       => major/minor key as Smi.
   DECL_ACCESSORS(raw_type_feedback_info, Object)
   inline Object* type_feedback_info();
@@ skipping 356 matching lines @@
   static const int kConstantPoolSize =
       FLAG_enable_embedded_constant_pool ? kIntSize : 0;
 
   // Layout description.
   static const int kRelocationInfoOffset = HeapObject::kHeaderSize;
   static const int kHandlerTableOffset = kRelocationInfoOffset + kPointerSize;
   static const int kDeoptimizationDataOffset =
       kHandlerTableOffset + kPointerSize;
   static const int kSourcePositionTableOffset =
       kDeoptimizationDataOffset + kPointerSize;
+  static const int kStackFrameCacheOffset =
+      kSourcePositionTableOffset + kPointerSize;
   // For FUNCTION kind, we store the type feedback info here.
   static const int kTypeFeedbackInfoOffset =
-      kSourcePositionTableOffset + kPointerSize;
+      kStackFrameCacheOffset + kPointerSize;
   static const int kNextCodeLinkOffset = kTypeFeedbackInfoOffset + kPointerSize;
   static const int kGCMetadataOffset = kNextCodeLinkOffset + kPointerSize;
   static const int kInstructionSizeOffset = kGCMetadataOffset + kPointerSize;
   static const int kICAgeOffset = kInstructionSizeOffset + kIntSize;
   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;
@@ skipping 131 matching lines @@
 
   // Returns the size of the code instructions.
   inline int instruction_size();
 
   // Return the source position table.
   inline ByteArray* source_position_table();
 
   // Set the source position table.
   inline void set_source_position_table(ByteArray* source_position_table);
 
+  inline Object* stack_frame_cache();
+  inline void set_stack_frame_cache(Object* stack_frame_cache);
+
   // 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
@@ skipping 6226 matching lines @@
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #include "src/objects/object-macros-undef.h"
 
 #endif  // V8_OBJECTS_H_