first-paint and first-contentful paint

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

 /*
  * 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 71 matching lines @@
   entries.appendVector(m_resourceTimingBuffer);
   if (m_navigationTiming)
     entries.append(m_navigationTiming);
   entries.appendVector(m_frameTimingBuffer);
 
   if (m_userTiming) {
     entries.appendVector(m_userTiming->getMarks());
     entries.appendVector(m_userTiming->getMeasures());
   }
 
+  for (const auto& entry : m_paintTimingBuffer) {
+    entries.append(entry.value);
+  }
+
   std::sort(entries.begin(), entries.end(),
             PerformanceEntry::startTimeCompareLessThan);
   return entries;
 }
 
 PerformanceEntryVector PerformanceBase::getEntriesByType(
     const String& entryType) {
   PerformanceEntryVector entries;
   PerformanceEntry::EntryType type =
       PerformanceEntry::toEntryTypeEnum(entryType);
 
   switch (type) {
     case PerformanceEntry::Invalid:
       return entries;
     case PerformanceEntry::LongTask:
       // Unsupported for LongTask. Per the spec, Long task entries can only be
       // accessed via Performance Observer. No separate buffer is maintained.
       return entries;
     case PerformanceEntry::Resource:
       for (const auto& resource : m_resourceTimingBuffer)
         entries.append(resource);
       break;
     case PerformanceEntry::Navigation:
       if (m_navigationTiming)
         entries.append(m_navigationTiming);
       break;
+    case PerformanceEntry::Paint:
+      for (const auto& entry : m_paintTimingBuffer) {
+        entries.append(entry.value);
+      }
+      break;
     case PerformanceEntry::Composite:
     case PerformanceEntry::Render:
       for (const auto& frame : m_frameTimingBuffer) {
         if (type == frame->entryTypeEnum()) {
           entries.append(frame);
         }
       }
       break;
     case PerformanceEntry::Mark:
       if (m_userTiming)
@@ skipping 25 matching lines @@
       if (resource->name() == name)
         entries.append(resource);
     }
   }
 
   if (entryType.isNull() || type == PerformanceEntry::Navigation) {
     if (m_navigationTiming && m_navigationTiming->name() == name)
       entries.append(m_navigationTiming);
   }
 
+  if (entryType.isNull() || type == PerformanceEntry::Paint) {
+    for (const auto& paintEntry : m_paintTimingBuffer) {
+      if (paintEntry.value->name() == name)
+        entries.append(paintEntry.value);
+    }
+  }
+
   if (entryType.isNull() || type == PerformanceEntry::Composite ||
       type == PerformanceEntry::Render) {
     for (const auto& frame : m_frameTimingBuffer) {
       if (frame->name() == name &&
           (entryType.isNull() || entryType == frame->entryType()))
         entries.append(frame);
     }
   }
 
   if (m_userTiming) {
@@ skipping 175 matching lines @@
       documentLoader->getNavigationType(), documentLoadTiming.redirectStart(),
       documentLoadTiming.redirectEnd(), documentLoadTiming.fetchStart(),
       documentLoadTiming.responseEnd(),
       documentLoadTiming.hasCrossOriginRedirect(),
       documentLoadTiming.hasSameOriginAsPreviousDocument(), resourceLoadTiming,
       lastRedirectEndTime, finishTime, transferSize, encodedBodyLength,
       decodedBodyLength, didReuseConnection);
   notifyObserversOfEntry(*m_navigationTiming);
 }
 
+void PerformanceBase::addPaintTiming(PerformancePaintTiming::PaintType type,
+                                     double startTime) {
+  if (!RuntimeEnabledFeatures::performancePaintTimingEnabled())
+    return;
+  PerformanceEntry* entry = new PerformancePaintTiming(
+      type, monotonicTimeToDOMHighResTimeStamp(startTime));
+  notifyObserversOfEntry(*entry);
+  // Only allow one entry for each type, keep the newest one.
+  m_paintTimingBuffer.set(PerformancePaintTiming::fromPaintTypeToString(type),
+                          entry);
+}
+
+void PerformanceBase::clearPaintTimingBuffer() {
+  m_paintTimingBuffer.clear();
+}
+
 void PerformanceBase::addResourceTimingBuffer(PerformanceEntry& entry) {
   m_resourceTimingBuffer.append(&entry);
 
   if (isResourceTimingBufferFull()) {
     dispatchEvent(Event::create(EventTypeNames::resourcetimingbufferfull));
     dispatchEvent(
         Event::create(EventTypeNames::webkitresourcetimingbufferfull));
   }
 }
 
@@ skipping 160 matching lines @@
 }
 
 DEFINE_TRACE(PerformanceBase) {
   visitor->trace(m_frameTimingBuffer);
   visitor->trace(m_resourceTimingBuffer);
   visitor->trace(m_navigationTiming);
   visitor->trace(m_userTiming);
   visitor->trace(m_observers);
   visitor->trace(m_activeObservers);
   visitor->trace(m_suspendedObservers);
+  visitor->trace(m_paintTimingBuffer);
   EventTargetWithInlineData::trace(visitor);
 }
 
 }  // namespace blink