dom/base/PerformanceResourceTiming.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "PerformanceResourceTiming.h"
   7 #include "mozilla/dom/PerformanceResourceTimingBinding.h"
   8
   9 using namespace mozilla::dom;
  10
  11 NS_IMPL_CYCLE_COLLECTION_INHERITED(PerformanceResourceTiming,
  12                                    PerformanceEntry,
  13                                    mTiming)
  14
  15 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(PerformanceResourceTiming,
  16                                                PerformanceEntry)
  17 NS_IMPL_CYCLE_COLLECTION_TRACE_END
  18
  19 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(PerformanceResourceTiming)
  20 NS_INTERFACE_MAP_END_INHERITING(PerformanceEntry)
  21
  22 NS_IMPL_ADDREF_INHERITED(PerformanceResourceTiming, PerformanceEntry)
  23 NS_IMPL_RELEASE_INHERITED(PerformanceResourceTiming, PerformanceEntry)
  24
  25 PerformanceResourceTiming::PerformanceResourceTiming(nsPerformanceTiming* aPerformanceTiming,
  26                                                      nsPerformance* aPerformance)
  27 : PerformanceEntry(aPerformance),
  28   mTiming(aPerformanceTiming)
  29 {
  30   MOZ_ASSERT(aPerformance, "Parent performance object should be provided");
  31 }
  32
  33 PerformanceResourceTiming::~PerformanceResourceTiming()
  34 {
  35 }
  36
  37 DOMHighResTimeStamp
  38 PerformanceResourceTiming::StartTime() const
  39 {
  40   DOMHighResTimeStamp startTime = mTiming->RedirectStartHighRes();
  41   return startTime ? startTime : mTiming->FetchStartHighRes();
  42 }
  43
  44 JSObject*
  45 PerformanceResourceTiming::WrapObject(JSContext* aCx)
  46 {
  47   return PerformanceResourceTimingBinding::Wrap(aCx, this);
  48 }