Add --timing

runtime/vm/timeline_analysis.h

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_TIMELINE_ANALYSIS_H_
 #define VM_TIMELINE_ANALYSIS_H_
 
 #include "vm/growable_array.h"
 #include "vm/timeline.h"
 
@@ skipping 132 matching lines @@
     inclusive_micros_ += delta_micros;
     ASSERT(inclusive_micros_ >= 0);
   }
 
   // Adjust exclusive micros.
   void add_exclusive_micros(int64_t delta_micros) {
     exclusive_micros_ += delta_micros;
     ASSERT(exclusive_micros_ >= 0);
   }
 
+  void Aggregate(const TimelineLabelPauseInfo* thread_pause_info);
+
   const char* name_;
   int64_t inclusive_micros_;
   int64_t exclusive_micros_;
   int64_t max_inclusive_micros_;
   int64_t max_exclusive_micros_;
 
   friend class TimelinePauses;
+  friend class TimelinePauseTrace;
 };
 
 
 class TimelinePauses : public TimelineAnalysis {
  public:
   TimelinePauses(Zone* zone,
                  Isolate* isolate,
                  TimelineEventRecorder* recorder);
 
   void Setup();
 
   void CalculatePauseTimesForThread(ThreadId tid);
 
   TimelineLabelPauseInfo* GetLabelPauseInfo(const char* name) const;
 
   int64_t InclusiveTime(const char* name) const;
   int64_t ExclusiveTime(const char* name) const;
   int64_t MaxInclusiveTime(const char* name) const;
   int64_t MaxExclusiveTime(const char* name) const;
 
+  intptr_t NumPauseInfos() const {
+    return labels_.length();
+  }
+
+  const TimelineLabelPauseInfo* PauseInfoAt(intptr_t i) const {
+    return labels_.At(i);
+  }
+
  private:
   struct StackItem {
     TimelineEvent* event;
     TimelineLabelPauseInfo* pause_info;
     int64_t exclusive_micros;
   };
 
   void ProcessThread(TimelineAnalysisThread* thread);
   bool CheckStack(TimelineEvent* event);
   void PopFinished(int64_t start);
   void Push(TimelineEvent* event);
-  bool IsLabelOnStack(const char* label);
+  bool IsLabelOnStack(const char* label) const;
   intptr_t StackDepth() const;
   StackItem& GetStackTop();
   TimelineLabelPauseInfo* GetOrAddLabelPauseInfo(const char* name);
 
   ZoneGrowableArray<StackItem> stack_;
   ZoneGrowableArray<TimelineLabelPauseInfo*> labels_;
 };
 
+
+class TimelinePauseTrace : public ValueObject {
+ public:
+  TimelinePauseTrace();
+  ~TimelinePauseTrace();
+
+  void Print();
+
+ private:
+  TimelineLabelPauseInfo* GetOrAddLabelPauseInfo(const char* name);
+  void Aggregate(const TimelineLabelPauseInfo* thread_pause_info);
+  void PrintPauseInfo(const TimelineLabelPauseInfo* pause_info);
+
+  ZoneGrowableArray<TimelineLabelPauseInfo*> isolate_labels_;
+};
+
 }  // namespace dart
 
 #endif  // VM_TIMELINE_ANALYSIS_H_