1 files changed, 162 insertions, 0 deletions
diff --git a/dom/performance/Performance.h b/dom/performance/Performance.h
new file mode 100644
index 000000000..bc70589a5
--- /dev/null
+++ b/dom/performance/Performance.h
@@ -0,0 +1,162 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_Performance_h
+#define mozilla_dom_Performance_h
+
+#include "mozilla/Attributes.h"
+#include "mozilla/DOMEventTargetHelper.h"
+#include "nsCOMPtr.h"
+#include "nsDOMNavigationTiming.h"
+
+class nsITimedChannel;
+class nsIHttpChannel;
+
+namespace mozilla {
+
+class ErrorResult;
+
+namespace dom {
+
+class PerformanceEntry;
+class PerformanceNavigation;
+class PerformanceObserver;
+class PerformanceTiming;
+
+namespace workers {
+class WorkerPrivate;
+}
+
+// Base class for main-thread and worker Performance API
+class Performance : public DOMEventTargetHelper
+{
+public:
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(Performance,
+                                           DOMEventTargetHelper)
+
+  static bool IsEnabled(JSContext* aCx, JSObject* aGlobal);
+
+  static bool IsObserverEnabled(JSContext* aCx, JSObject* aGlobal);
+
+  static already_AddRefed<Performance>
+  CreateForMainThread(nsPIDOMWindowInner* aWindow,
+                      nsDOMNavigationTiming* aDOMTiming,
+                      nsITimedChannel* aChannel,
+                      Performance* aParentPerformance);
+
+  static already_AddRefed<Performance>
+  CreateForWorker(workers::WorkerPrivate* aWorkerPrivate);
+
+  JSObject* WrapObject(JSContext *cx,
+                       JS::Handle<JSObject*> aGivenProto) override;
+
+  void GetEntries(nsTArray<RefPtr<PerformanceEntry>>& aRetval);
+
+  void GetEntriesByType(const nsAString& aEntryType,
+                        nsTArray<RefPtr<PerformanceEntry>>& aRetval);
+
+  void GetEntriesByName(const nsAString& aName,
+                        const Optional<nsAString>& aEntryType,
+                        nsTArray<RefPtr<PerformanceEntry>>& aRetval);
+
+  virtual void AddEntry(nsIHttpChannel* channel,
+                        nsITimedChannel* timedChannel) = 0;
+
+  void ClearResourceTimings();
+
+  virtual DOMHighResTimeStamp Now() const = 0;
+
+  void Mark(const nsAString& aName, ErrorResult& aRv);
+
+  void ClearMarks(const Optional<nsAString>& aName);
+
+  void Measure(const nsAString& aName,
+               const Optional<nsAString>& aStartMark,
+               const Optional<nsAString>& aEndMark,
+               ErrorResult& aRv);
+
+  void ClearMeasures(const Optional<nsAString>& aName);
+
+  void SetResourceTimingBufferSize(uint64_t aMaxSize);
+
+  void AddObserver(PerformanceObserver* aObserver);
+  void RemoveObserver(PerformanceObserver* aObserver);
+  void NotifyObservers();
+  void CancelNotificationObservers();
+
+  virtual PerformanceTiming* Timing() = 0;
+
+  virtual PerformanceNavigation* Navigation() = 0;
+
+  IMPL_EVENT_HANDLER(resourcetimingbufferfull)
+
+  virtual void GetMozMemory(JSContext *aCx,
+                            JS::MutableHandle<JSObject*> aObj) = 0;
+
+  virtual nsDOMNavigationTiming* GetDOMTiming() const = 0;
+
+  virtual nsITimedChannel* GetChannel() const = 0;
+
+  virtual Performance* GetParentPerformance() const = 0;
+
+protected:
+  Performance();
+  explicit Performance(nsPIDOMWindowInner* aWindow);
+
+  virtual ~Performance();
+
+  virtual void InsertUserEntry(PerformanceEntry* aEntry);
+  void InsertResourceEntry(PerformanceEntry* aEntry);
+
+  void ClearUserEntries(const Optional<nsAString>& aEntryName,
+                        const nsAString& aEntryType);
+
+  DOMHighResTimeStamp ResolveTimestampFromName(const nsAString& aName,
+                                               ErrorResult& aRv);
+
+  virtual nsISupports* GetAsISupports() = 0;
+
+  virtual void DispatchBufferFullEvent() = 0;
+
+  virtual TimeStamp CreationTimeStamp() const = 0;
+
+  virtual DOMHighResTimeStamp CreationTime() const = 0;
+
+  virtual bool IsPerformanceTimingAttribute(const nsAString& aName) = 0;
+
+  virtual DOMHighResTimeStamp
+  GetPerformanceTimingFromString(const nsAString& aTimingName) = 0;
+
+  bool IsResourceEntryLimitReached() const
+  {
+    return mResourceEntries.Length() >= mResourceTimingBufferSize;
+  }
+
+  void LogEntry(PerformanceEntry* aEntry, const nsACString& aOwner) const;
+  void TimingNotification(PerformanceEntry* aEntry, const nsACString& aOwner,
+                          uint64_t epoch);
+
+  void RunNotificationObserversTask();
+  void QueueEntry(PerformanceEntry* aEntry);
+
+  DOMHighResTimeStamp RoundTime(double aTime) const;
+
+  nsTObserverArray<PerformanceObserver*> mObservers;
+
+private:
+  nsTArray<RefPtr<PerformanceEntry>> mUserEntries;
+  nsTArray<RefPtr<PerformanceEntry>> mResourceEntries;
+
+  uint64_t mResourceTimingBufferSize;
+  static const uint64_t kDefaultResourceTimingBufferSize = 150;
+  bool mPendingNotificationObserversTask;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_Performance_h