Allow recording individual samples in addition to the aggregated CPU profiles

src/cpu-profiler.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 189 matching lines @@
 namespace internal {
 
 
 // TODO(isolates): isolatify this class.
 class CpuProfiler {
  public:
   static void SetUp();
   static void TearDown();
 
   static void StartProfiling(const char* title);
-  static void StartProfiling(String* title);
+  static void StartProfiling(String* title, bool record_samples);
   static CpuProfile* StopProfiling(const char* title);
   static CpuProfile* StopProfiling(Object* security_token, String* title);
   static int GetProfilesCount();
   static CpuProfile* GetProfile(Object* security_token, int index);
   static CpuProfile* FindProfile(Object* security_token, unsigned uid);
   static void DeleteAllProfiles();
   static void DeleteProfile(CpuProfile* profile);
   static bool HasDetachedProfiles();
 
   // Invoked from stack sampler (thread or signal handler.)
@@ skipping 25 matching lines @@
   static void SharedFunctionInfoMoveEvent(Address from, Address to);
 
   static INLINE(bool is_profiling(Isolate* isolate)) {
     CpuProfiler* profiler = isolate->cpu_profiler();
     return profiler != NULL && profiler->is_profiling_;
   }
 
  private:
   CpuProfiler();
   ~CpuProfiler();
-  void StartCollectingProfile(const char* title);
-  void StartCollectingProfile(String* title);
+  void StartCollectingProfile(const char* title, bool record_samples);
+  void StartCollectingProfile(String* title, bool record_samples);
   void StartProcessorIfNotStarted();
   CpuProfile* StopCollectingProfile(const char* title);
   CpuProfile* StopCollectingProfile(Object* security_token, String* title);
   void StopProcessorIfLastProfile(const char* title);
   void StopProcessor();
   void ResetProfiles();
 
   CpuProfilesCollection* profiles_;
   unsigned next_profile_uid_;
   TokenEnumerator* token_enumerator_;
   ProfileGenerator* generator_;
   ProfilerEventsProcessor* processor_;
   int saved_logging_nesting_;
   bool need_to_stop_sampler_;
   bool is_profiling_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CpuProfiler);
 };
 
 } }  // namespace v8::internal
 
 
 #endif  // V8_CPU_PROFILER_H_