зеркало из https://github.com/mozilla/gecko-dev.git
85 строки
2.8 KiB
C++
85 строки
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "ServiceWorkerPeriodicUpdater.h"
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#include "mozilla/ClearOnShutdown.h"
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#include "mozilla/unused.h"
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#include "mozilla/Services.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/dom/ContentParent.h"
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#include "nsIServiceWorkerManager.h"
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#define OBSERVER_TOPIC_IDLE_DAILY "idle-daily"
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namespace mozilla {
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namespace dom {
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namespace workers {
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NS_IMPL_ISUPPORTS(ServiceWorkerPeriodicUpdater, nsIObserver)
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StaticRefPtr<ServiceWorkerPeriodicUpdater>
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ServiceWorkerPeriodicUpdater::sInstance;
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bool
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ServiceWorkerPeriodicUpdater::sPeriodicUpdatesEnabled = true;
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already_AddRefed<ServiceWorkerPeriodicUpdater>
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ServiceWorkerPeriodicUpdater::GetSingleton()
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{
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MOZ_ASSERT(XRE_GetProcessType() == GeckoProcessType_Default);
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if (!sInstance) {
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sInstance = new ServiceWorkerPeriodicUpdater();
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ClearOnShutdown(&sInstance);
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}
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nsRefPtr<ServiceWorkerPeriodicUpdater> copy(sInstance.get());
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return copy.forget();
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}
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ServiceWorkerPeriodicUpdater::ServiceWorkerPeriodicUpdater()
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{
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Preferences::AddBoolVarCache(&sPeriodicUpdatesEnabled,
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"dom.serviceWorkers.periodic-updates.enabled",
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true);
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}
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ServiceWorkerPeriodicUpdater::~ServiceWorkerPeriodicUpdater()
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{
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}
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NS_IMETHODIMP
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ServiceWorkerPeriodicUpdater::Observe(nsISupports* aSubject,
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const char* aTopic,
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const char16_t* aData)
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{
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// In tests, the pref is set to false so that the idle-daily service does not
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// trigger updates leading to intermittent failures.
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// We're called from SpecialPowers inside tests, in which case we need to
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// update during the test run, for which we use a non-empty aData.
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NS_NAMED_LITERAL_STRING(CallerSpecialPowers, "Caller:SpecialPowers");
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if (strcmp(aTopic, OBSERVER_TOPIC_IDLE_DAILY) == 0 &&
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(sPeriodicUpdatesEnabled || (aData && CallerSpecialPowers.Equals(aData)))) {
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// First, update all registrations in the parent process.
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nsCOMPtr<nsIServiceWorkerManager> swm =
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mozilla::services::GetServiceWorkerManager();
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if (swm) {
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swm->UpdateAllRegistrations();
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}
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// Now, tell all child processes to update their registrations as well.
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nsTArray<ContentParent*> children;
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ContentParent::GetAll(children);
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for (uint32_t i = 0; i < children.Length(); i++) {
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unused << children[i]->SendUpdateServiceWorkerRegistrations();
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}
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}
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return NS_OK;
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}
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} // namespace workers
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} // namespace dom
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} // namespace mozilla
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