Improve Observatory Timeline UI

runtime/vm/timeline.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_H_
 #define VM_TIMELINE_H_
 
 #include "include/dart_tools_api.h"
 
 #include "vm/allocation.h"
@@ skipping 763 matching lines @@
 
 // A recorder that stores events in a buffer of fixed capacity. When the buffer
 // is full, new events overwrite old events.
 class TimelineEventRingRecorder : public TimelineEventFixedBufferRecorder {
  public:
   explicit TimelineEventRingRecorder(intptr_t capacity = kDefaultCapacity)
       : TimelineEventFixedBufferRecorder(capacity) {}
   ~TimelineEventRingRecorder() {}
 
   const char* name() const {
-    return "ring";
+    return "Ring";
   }
 
  protected:
   TimelineEventBlock* GetNewBlockLocked();
 };
 
 
 // A recorder that stores events in a buffer of fixed capacity. When the buffer
 // is full, new events are dropped.
 class TimelineEventStartupRecorder : public TimelineEventFixedBufferRecorder {
  public:
   explicit TimelineEventStartupRecorder(intptr_t capacity = kDefaultCapacity)
       : TimelineEventFixedBufferRecorder(capacity) {}
   ~TimelineEventStartupRecorder() {}
 
   const char* name() const {
-    return "startup";
+    return "Startup";
   }
 
  protected:
   TimelineEventBlock* GetNewBlockLocked();
 };
 
 
 // An abstract recorder that calls |OnEvent| whenever an event is complete.
 // This should only be used for testing.
 class TimelineEventCallbackRecorder : public TimelineEventRecorder {
  public:
   TimelineEventCallbackRecorder();
   ~TimelineEventCallbackRecorder();
 
   void PrintJSON(JSONStream* js, TimelineEventFilter* filter);
   void PrintTraceEvent(JSONStream* js, TimelineEventFilter* filter);
 
   // Called when |event| is completed. It is unsafe to keep a reference to
   // |event| as it may be freed as soon as this function returns.
   virtual void OnEvent(TimelineEvent* event) = 0;
 
   const char* name() const {
-    return "callback";
+    return "Callback";
   }
 
  protected:
   TimelineEventBlock* GetNewBlockLocked() {
     return NULL;
   }
   TimelineEventBlock* GetHeadBlockLocked() {
     return NULL;
   }
   void Clear() {
   }
   TimelineEvent* StartEvent();
   void CompleteEvent(TimelineEvent* event);
 };
 
 
 // A recorder that stores events in chains of blocks of events.
 // NOTE: This recorder will continue to allocate blocks until it exhausts
 // memory.
 class TimelineEventEndlessRecorder : public TimelineEventRecorder {
  public:
   TimelineEventEndlessRecorder();
 
   void PrintJSON(JSONStream* js, TimelineEventFilter* filter);
   void PrintTraceEvent(JSONStream* js, TimelineEventFilter* filter);
 
   const char* name() const {
-    return "endless";
+    return "Endless";
   }
 
  protected:
   TimelineEvent* StartEvent();
   void CompleteEvent(TimelineEvent* event);
   TimelineEventBlock* GetNewBlockLocked();
   TimelineEventBlock* GetHeadBlockLocked();
   void Clear();
 
   void PrintJSONEvents(JSONArray* array, TimelineEventFilter* filter);
@@ skipping 21 matching lines @@
 
  private:
   TimelineEventBlock* current_;
   TimelineEventRecorder* recorder_;
 };
 
 
 }  // namespace dart
 
 #endif  // VM_TIMELINE_H_