tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

PerformanceMark.h (2455B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #ifndef mozilla_dom_performancemark_h___
      8 #define mozilla_dom_performancemark_h___
      9 
     10 #include "mozilla/ProfilerMarkers.h"
     11 #include "mozilla/dom/PerformanceEntry.h"
     12 
     13 namespace mozilla::dom {
     14 
     15 struct PerformanceMarkOptions;
     16 
     17 // http://www.w3.org/TR/user-timing/#performancemark
     18 class PerformanceMark final : public PerformanceEntry {
     19 public:
     20  NS_DECL_ISUPPORTS_INHERITED
     21  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(PerformanceMark,
     22                                                         PerformanceEntry);
     23 
     24 private:
     25  PerformanceMark(nsISupports* aParent, const nsAString& aName,
     26                  DOMHighResTimeStamp aStartTime,
     27                  const JS::Handle<JS::Value>& aDetail,
     28                  DOMHighResTimeStamp aUnclampedStartTime);
     29 
     30 public:
     31  static already_AddRefed<PerformanceMark> Constructor(
     32      const GlobalObject& aGlobal, const nsAString& aMarkName,
     33      const PerformanceMarkOptions& aMarkOptions, ErrorResult& aRv);
     34 
     35  static already_AddRefed<PerformanceMark> Constructor(
     36      JSContext* aCx, nsIGlobalObject* aGlobal, const nsAString& aMarkName,
     37      const PerformanceMarkOptions& aMarkOptions, ErrorResult& aRv);
     38 
     39  virtual JSObject* WrapObject(JSContext* aCx,
     40                               JS::Handle<JSObject*> aGivenProto) override;
     41 
     42  virtual DOMHighResTimeStamp StartTime() const override { return mStartTime; }
     43 
     44  virtual DOMHighResTimeStamp UnclampedStartTime() const override {
     45    MOZ_ASSERT(profiler_thread_is_being_profiled_for_markers(),
     46               "This should only be called when the Gecko Profiler is active.");
     47    return mUnclampedStartTime;
     48  }
     49 
     50  void GetDetail(JSContext* aCx, JS::MutableHandle<JS::Value> aRetval);
     51 
     52  size_t SizeOfIncludingThis(
     53      mozilla::MallocSizeOf aMallocSizeOf) const override;
     54 
     55 protected:
     56  virtual ~PerformanceMark();
     57  DOMHighResTimeStamp mStartTime;
     58 
     59 private:
     60  JS::Heap<JS::Value> mDetail;
     61  // This is used by the Gecko Profiler only to be able to add precise markers.
     62  // It's not exposed to JS
     63  DOMHighResTimeStamp mUnclampedStartTime;
     64 };
     65 
     66 }  // namespace mozilla::dom
     67 
     68 #endif /* mozilla_dom_performancemark_h___ */