CPUProfiler: Improve line numbers support in profiler.

src/cpu-profiler.h

Index: src/cpu-profiler.h
diff --git a/src/cpu-profiler.h b/src/cpu-profiler.h
index 77fdb0681ba871a79cb30af671a0b8d200a25bcc..e31b47dda9983b2f5b10caf750345af16c8b1bdc 100644
--- a/src/cpu-profiler.h
+++ b/src/cpu-profiler.h
@@ -156,7 +156,7 @@ class ProfilerEventsProcessor : public Thread {
 
   // Thread control.
   virtual void Run();
-  inline void Stop() { running_ = false; }
+  void StopSynchronously();
   INLINE(bool running()) { return running_; }
   void Enqueue(const CodeEventsContainer& event);
 
@@ -171,15 +171,16 @@ class ProfilerEventsProcessor : public Thread {
 
  private:
   // Called from events processing thread (Run() method.)
-  bool ProcessCodeEvent(unsigned* dequeue_order);
-  bool ProcessTicks(unsigned dequeue_order);
+  bool ProcessCodeEvent();
+  bool ProcessTicks();
 
   ProfileGenerator* generator_;
   bool running_;
   UnboundQueue<CodeEventsContainer> events_buffer_;
   SamplingCircularQueue ticks_buffer_;
   UnboundQueue<TickSampleEventRecord> ticks_from_vm_buffer_;
-  unsigned enqueue_order_;
+  unsigned last_code_event_id_;
+  unsigned last_processed_code_event_id_;
 };
 
 
@@ -251,6 +252,9 @@ class CpuProfiler {
     return &is_profiling_;
   }
 
+  ProfileGenerator* generator() const { return generator_; }
+  ProfilerEventsProcessor* processor() const { return processor_; }
+
  private:
   void StartProcessorIfNotStarted();
   void StopProcessorIfLastProfile(const char* title);