This patch is the propagation version of https://codereview.chromium.org/10824032 patch

src/log.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 58 matching lines @@
 // --prof
 // Collect statistical profiling information (ticks), default is off.  The
 // tick profiler requires code events, so --prof implies --log-code.
 
 // Forward declarations.
 class LogMessageBuilder;
 class Profiler;
 class Semaphore;
 class Ticker;
 class Isolate;
+class PositionsRecorder;
 
 #undef LOG
 #define LOG(isolate, Call)                          \
   do {                                              \
     v8::internal::Logger* logger =                  \
         (isolate)->logger();                        \
     if (logger->is_logging())                       \
       logger->Call;                                 \
   } while (false)
 
@@ skipping 150 matching lines @@
                        SharedFunctionInfo* shared,
                        String* source, int line);
   void CodeCreateEvent(LogEventsAndTags tag, Code* code, int args_count);
   void CodeMovingGCEvent();
   // Emits a code create event for a RegExp.
   void RegExpCodeCreateEvent(Code* code, String* source);
   // Emits a code move event.
   void CodeMoveEvent(Address from, Address to);
   // Emits a code delete event.
   void CodeDeleteEvent(Address from);
+  // Emits a code line info add event with Postion type .

[danno, 2013/02/06 14:21:34]

nit: remove space before .

+  void CodeLinePosInfoAddPositionEvent(void* jit_handler_data,
+                                       int pc_offset,
+                                       int position);
+  // Emits a code line info add event with StatementPostion type.
+  void CodeLinePosInfoAddStatementPositionEvent(void* jit_handler_data,
+                                                int pc_offset,
+                                                int position);
+  // Emits a code line info start to record event
+  void CodeStartLinePosInfoRecordEvent(PositionsRecorder* pos_recorder);
+  // Emits a code line info finish record event.
+  // It's the callee's responsibility to dispose the parameter line_info data.

[danno, 2013/02/06 14:21:34]

There is no "line_info data" parameter? 

+  void CodeEndLinePosInfoRecordEvent(Code* code, void* jit_handler_data);
 
   void SharedFunctionInfoMoveEvent(Address from, Address to);
 
   void SnapshotPositionEvent(Address addr, int pos);
 
   // ==== Events logged by --log-gc. ====
   // Heap sampling events: start, end, and individual types.
   void HeapSampleBeginEvent(const char* space, const char* kind);
   void HeapSampleEndEvent(const char* space, const char* kind);
   void HeapSampleItemEvent(const char* type, int number, int bytes);
@@ skipping 50 matching lines @@
 
   void RegExpCompileEvent(Handle<JSRegExp> regexp, bool in_cache);
 
   // Log an event reported from generated code
   void LogRuntime(Vector<const char> format, JSArray* args);
 
   bool is_logging() {
     return logging_nesting_ > 0;
   }
 
+  bool is_code_event_handler_enabled() {
+    return code_event_handler_ != NULL;
+  }
+
   bool is_logging_code_events() {
     return is_logging() || code_event_handler_ != NULL;
   }
 
   // Pause/Resume collection of profiling data.
   // When data collection is paused, CPU Tick events are discarded until
   // data collection is Resumed.
   void PauseProfiler();
   void ResumeProfiler();
   bool IsProfilerPaused();
@@ skipping 23 matching lines @@
   void LogFailure();
 
  private:
   class NameBuffer;
   class NameMap;
 
   Logger();
   ~Logger();
 
   // Issue code notifications.
-  void IssueCodeAddedEvent(Code* code, const char* name, size_t name_len);
+  void IssueCodeAddedEvent(Code* code,
+                           Script* script,

[danno, 2013/02/06 14:21:34]

Should be a Handle<Script>

+                           const char* name,
+                           size_t name_len);
   void IssueCodeMovedEvent(Address from, Address to);
   void IssueCodeRemovedEvent(Address from);
-
+  void IssueAddCodeLinePosInfoEvent(void* jit_handler_data,
+                                    int pc_offset,
+                                    int position,
+                                    JitCodeEvent::PositionType position_Type);
+  void* IssueStartCodePosInfoEvent();
+  void IssueEndCodePosInfoEvent(Code* code, void* jit_handler_data);
   // Emits the profiler's first message.
   void ProfilerBeginEvent();
 
   // Emits callback event messages.
   void CallbackEventInternal(const char* prefix,
                              const char* name,
                              Address entry_point);
 
   // Internal configurable move event.
   void MoveEventInternal(LogEventsAndTags event, Address from, Address to);
@@ skipping 140 matching lines @@
 // Class that extracts stack trace, used for profiling.
 class StackTracer : public AllStatic {
  public:
   static void Trace(Isolate* isolate, TickSample* sample);
 };
 
 } }  // namespace v8::internal
 
 
 #endif  // V8_LOG_H_