dom/workers/Performance.cpp

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this
   3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   4
   5 #include "Performance.h"
   6 #include "mozilla/dom/PerformanceBinding.h"
   7
   8 #include "WorkerPrivate.h"
   9
  10 BEGIN_WORKERS_NAMESPACE
  11
  12 NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(Performance, AddRef)
  13 NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(Performance, Release)
  14
  15 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(Performance)
  16
  17 Performance::Performance(WorkerPrivate* aWorkerPrivate)
  18   : mWorkerPrivate(aWorkerPrivate)
  19 {
  20   mWorkerPrivate->AssertIsOnWorkerThread();
  21 }
  22
  23 Performance::~Performance()
  24 {
  25   mWorkerPrivate->AssertIsOnWorkerThread();
  26 }
  27
  28 JSObject*
  29 Performance::WrapObject(JSContext* aCx)
  30 {
  31   return PerformanceBinding_workers::Wrap(aCx, this);
  32 }
  33
  34 double
  35 Performance::Now() const
  36 {
  37   TimeDuration duration =
  38     TimeStamp::Now() - mWorkerPrivate->NowBaseTimeStamp();
  39   return duration.ToMilliseconds();
  40 }
  41
  42 END_WORKERS_NAMESPACE