dom/time/TimeService.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 "base/basictypes.h"
   6 #include "jsapi.h"
   7 #include "mozilla/ClearOnShutdown.h"
   8 #include "mozilla/Hal.h"
   9 #include "TimeService.h"
  10
  11 namespace mozilla {
  12 namespace dom {
  13 namespace time {
  14
  15 NS_IMPL_ISUPPORTS(TimeService, nsITimeService)
  16
  17 /* static */ StaticRefPtr<TimeService> TimeService::sSingleton;
  18
  19 /* static */ already_AddRefed<TimeService>
  20 TimeService::GetInstance()
  21 {
  22   if (!sSingleton) {
  23     sSingleton = new TimeService();
  24     ClearOnShutdown(&sSingleton);
  25   }
  26   nsRefPtr<TimeService> service = sSingleton.get();
  27   return service.forget();
  28 }
  29
  30 NS_IMETHODIMP
  31 TimeService::Set(int64_t aTimeInMS) {
  32   hal::AdjustSystemClock(aTimeInMS - (JS_Now() / PR_USEC_PER_MSEC));
  33   return NS_OK;
  34 }
  35
  36 } // namespace time
  37 } // namespace dom
  38 } // namespace mozilla