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257d9118dc
Right now, NS_GENERIC_FACTORY_SINGLETON_CONSTRUCTOR expects singleton constructors to return already-addrefed raw pointers, and while it accepts constructors that return already_AddRefed, most existing don't do so. Meanwhile, the convention elsewhere is that a raw pointer return value is owned by the callee, and that the caller needs to addref it if it wants to keep its own reference to it. The difference in convention makes it easy to leak (I've definitely caused more than one shutdown leak this way), so it would be better if we required the singleton getters to return an explicit already_AddRefed, which would behave the same for all callers. This also cleans up several singleton constructors that left a dangling pointer to their singletons when their initialization methods failed, when they released their references without clearing their global raw pointers. MozReview-Commit-ID: 9peyG4pRYcr --HG-- extra : rebase_source : 2f5bd89c17cb554541be38444672a827c1392f3f
123 lines
2.5 KiB
C++
123 lines
2.5 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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_quota_QuotaManagerService_h
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#define mozilla_dom_quota_QuotaManagerService_h
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#include "mozilla/dom/ipc/IdType.h"
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#include "mozilla/dom/battery/Types.h"
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#include "mozilla/Observer.h"
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#include "nsAutoPtr.h"
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#include "nsIObserver.h"
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#include "nsIQuotaManagerService.h"
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#define QUOTAMANAGER_SERVICE_CONTRACTID \
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"@mozilla.org/dom/quota-manager-service;1"
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namespace mozilla {
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namespace ipc {
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class PBackgroundChild;
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} // namespace ipc
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namespace hal {
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class BatteryInformation;
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}
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namespace dom {
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namespace quota {
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class QuotaChild;
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class QuotaManager;
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class QuotaManagerService final
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: public nsIQuotaManagerService
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, public nsIObserver
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, public BatteryObserver
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{
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typedef mozilla::ipc::PBackgroundChild PBackgroundChild;
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class BackgroundCreateCallback;
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class PendingRequestInfo;
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class UsageRequestInfo;
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class RequestInfo;
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class IdleMaintenanceInfo;
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nsCOMPtr<nsIEventTarget> mBackgroundThread;
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QuotaChild* mBackgroundActor;
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bool mBackgroundActorFailed;
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bool mIdleObserverRegistered;
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public:
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// Returns a non-owning reference.
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static QuotaManagerService*
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GetOrCreate();
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// Returns a non-owning reference.
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static QuotaManagerService*
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Get();
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// No one should call this but the factory.
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static already_AddRefed<QuotaManagerService>
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FactoryCreate();
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void
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ClearBackgroundActor();
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void
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NoteLiveManager(QuotaManager* aManager);
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void
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NoteShuttingDownManager();
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// Called when a process is being shot down. Aborts any running operations
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// for the given process.
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void
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AbortOperationsForProcess(ContentParentId aContentParentId);
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private:
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QuotaManagerService();
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~QuotaManagerService();
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nsresult
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Init();
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void
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Destroy();
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nsresult
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InitiateRequest(nsAutoPtr<PendingRequestInfo>& aInfo);
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nsresult
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BackgroundActorCreated(PBackgroundChild* aBackgroundActor);
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void
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BackgroundActorFailed();
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void
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PerformIdleMaintenance();
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void
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RemoveIdleObserver();
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NS_DECL_ISUPPORTS
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NS_DECL_NSIQUOTAMANAGERSERVICE
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NS_DECL_NSIOBSERVER
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// BatteryObserver override
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void
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Notify(const hal::BatteryInformation& aBatteryInfo) override;
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};
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} // namespace quota
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} // namespace dom
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} // namespace mozilla
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#endif /* mozilla_dom_quota_QuotaManagerService_h */
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