Add timestamps to CPU profile samples.

src/profile-generator.h

 // Copyright 2011 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 181 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(ProfileTree);
 };
 
 
 class CpuProfile {
  public:
   CpuProfile(const char* title, bool record_samples);
 
   // Add pc -> ... -> main() call path to the profile.
-  void AddPath(const Vector<CodeEntry*>& path);
+  void AddPath(TimeTicks timestamp, const Vector<CodeEntry*>& path);
   void CalculateTotalTicksAndSamplingRate();
 
   const char* title() const { return title_; }
   const ProfileTree* top_down() const { return &top_down_; }
 
   int samples_count() const { return samples_.length(); }
   ProfileNode* sample(int index) const { return samples_.at(index); }
+  TimeTicks sample_timestamp(int index) const { return timestamps_.at(index); }
 
   TimeTicks start_time() const { return start_time_; }
   TimeTicks end_time() const { return end_time_; }
 
   void UpdateTicksScale();
 
   void Print();
 
  private:
   const char* title_;
   bool record_samples_;
   TimeTicks start_time_;
   TimeTicks end_time_;
   List<ProfileNode*> samples_;
+  List<TimeTicks> timestamps_;
   ProfileTree top_down_;
 
   DISALLOW_COPY_AND_ASSIGN(CpuProfile);
 };
 
 
 class CodeMap {
  public:
   CodeMap() : next_shared_id_(1) { }
   void AddCode(Address addr, CodeEntry* entry, unsigned size);
@@ skipping 64 matching lines @@
 
   CodeEntry* NewCodeEntry(
       Logger::LogEventsAndTags tag,
       const char* name,
       const char* name_prefix = CodeEntry::kEmptyNamePrefix,
       const char* resource_name = CodeEntry::kEmptyResourceName,
       int line_number = v8::CpuProfileNode::kNoLineNumberInfo,
       int column_number = v8::CpuProfileNode::kNoColumnNumberInfo);
 
   // Called from profile generator thread.
-  void AddPathToCurrentProfiles(const Vector<CodeEntry*>& path);
+  void AddPathToCurrentProfiles(
+      TimeTicks timestamp, const Vector<CodeEntry*>& path);
 
   // Limits the number of profiles that can be simultaneously collected.
   static const int kMaxSimultaneousProfiles = 100;
 
  private:
   StringsStorage function_and_resource_names_;
   List<CodeEntry*> code_entries_;
   List<CpuProfile*> finished_profiles_;
 
   // Accessed by VM thread and profile generator thread.
@@ skipping 30 matching lines @@
   CodeEntry* gc_entry_;
   CodeEntry* unresolved_entry_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileGenerator);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_PROFILE_GENERATOR_H_