first-paint and first-contentful paint

third_party/WebKit/Source/core/timing/PerformanceBase.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2012 Intel Inc. 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.
@@ skipping 18 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef PerformanceBase_h
 #define PerformanceBase_h
 
 #include "core/CoreExport.h"
 #include "core/dom/DOMHighResTimeStamp.h"
 #include "core/events/EventTarget.h"
 #include "core/timing/PerformanceEntry.h"
+#include "core/timing/PerformancePaintTiming.h"
 #include "platform/Timer.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
 #include "wtf/HashSet.h"
 #include "wtf/ListHashSet.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 class DOMWindow;
 class ExceptionState;
 class LocalFrame;
 class PerformanceObserver;
 class PerformanceTiming;
 class ResourceTimingInfo;
 class UserTiming;
 
 using PerformanceEntryVector = HeapVector<Member<PerformanceEntry>>;
+using PerformancePaintTimingEntries =
+    HeapHashMap<String, Member<PerformanceEntry>>;
 using PerformanceObservers = HeapListHashSet<Member<PerformanceObserver>>;
 
 class CORE_EXPORT PerformanceBase : public EventTargetWithInlineData {
  public:
   ~PerformanceBase() override;
 
   const AtomicString& interfaceName() const override;
 
   virtual PerformanceTiming* timing() const;
 
@@ skipping 33 matching lines @@
                          double endTime,
                          const String& name,
                          const String& culpritFrameSrc,
                          const String& culpritFrameId,
                          const String& culpritFrameName);
 
   void addResourceTiming(const ResourceTimingInfo&);
 
   void addNavigationTiming(LocalFrame*);
 
+  void addPaintTiming(PerformancePaintTiming::PaintType, double startTime);
+
+  void clearPaintTimingBuffer();
+
   void mark(const String& markName, ExceptionState&);
   void clearMarks(const String& markName);
 
   void measure(const String& measureName,
                const String& startMark,
                const String& endMark,
                ExceptionState&);
   void clearMeasures(const String& measureName);
 
   void unregisterPerformanceObserver(PerformanceObserver&);
@@ skipping 16 matching lines @@
   void notifyObserversOfEntry(PerformanceEntry&);
   bool hasObserverFor(PerformanceEntry::EntryType) const;
 
   void deliverObservationsTimerFired(TimerBase*);
 
   PerformanceEntryVector m_frameTimingBuffer;
   unsigned m_frameTimingBufferSize;
   PerformanceEntryVector m_resourceTimingBuffer;
   unsigned m_resourceTimingBufferSize;
   Member<PerformanceEntry> m_navigationTiming;
+  PerformancePaintTimingEntries m_paintTimingBuffer;

[panicker, 2016/11/29 22:21:15]

This is not supposed to be buffer-able yet due to a spec limitation.
Let's remove the buffer, and could add it back in the future when the spec
supports it.
(This simplifies the implementation a lot)

[sunjian, 2016/12/02 21:39:57]

Done.

   Member<UserTiming> m_userTiming;
 
   double m_timeOrigin;
 
   PerformanceEntryTypeMask m_observerFilterOptions;
   PerformanceObservers m_observers;
   PerformanceObservers m_activeObservers;
   PerformanceObservers m_suspendedObservers;
   Timer<PerformanceBase> m_deliverObservationsTimer;
 };
 
 }  // namespace blink
 
 #endif  // PerformanceBase_h