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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
90 lines
3.1 KiB
C++
90 lines
3.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* vim: set sw=4 ts=8 et 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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#ifndef nsDNSService2_h__
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#define nsDNSService2_h__
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#include "nsPIDNSService.h"
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#include "nsIIDNService.h"
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#include "nsIMemoryReporter.h"
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#include "nsIObserver.h"
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#include "nsHostResolver.h"
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#include "nsAutoPtr.h"
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#include "nsString.h"
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#include "nsTHashtable.h"
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#include "nsHashKeys.h"
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#include "mozilla/Mutex.h"
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#include "mozilla/Attributes.h"
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class nsAuthSSPI;
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class nsDNSService final : public nsPIDNSService
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, public nsIObserver
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, public nsIMemoryReporter
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{
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public:
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_NSPIDNSSERVICE
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NS_DECL_NSIDNSSERVICE
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NS_DECL_NSIOBSERVER
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NS_DECL_NSIMEMORYREPORTER
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nsDNSService();
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static already_AddRefed<nsIDNSService> GetXPCOMSingleton();
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size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf) const;
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bool GetOffline() const;
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protected:
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friend class nsAuthSSPI;
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nsresult DeprecatedSyncResolve(const nsACString &aHostname,
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uint32_t flags,
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const mozilla::OriginAttributes &aOriginAttributes,
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nsIDNSRecord **result);
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private:
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~nsDNSService();
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static already_AddRefed<nsDNSService> GetSingleton();
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uint16_t GetAFForLookup(const nsACString &host, uint32_t flags);
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nsresult PreprocessHostname(bool aLocalDomain,
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const nsACString &aInput,
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nsIIDNService *aIDN,
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nsACString &aACE);
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nsresult ResolveInternal(const nsACString &aHostname,
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uint32_t flags,
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const mozilla::OriginAttributes &aOriginAttributes,
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nsIDNSRecord **result);
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RefPtr<nsHostResolver> mResolver;
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nsCOMPtr<nsIIDNService> mIDN;
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// mLock protects access to mResolver and mIPv4OnlyDomains
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mozilla::Mutex mLock;
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// mIPv4OnlyDomains is a comma-separated list of domains for which only
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// IPv4 DNS lookups are performed. This allows the user to disable IPv6 on
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// a per-domain basis and work around broken DNS servers. See bug 68796.
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nsCString mIPv4OnlyDomains;
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nsCString mForceResolve;
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bool mDisableIPv6;
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bool mDisablePrefetch;
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bool mBlockDotOnion;
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bool mFirstTime;
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bool mNotifyResolution;
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bool mOfflineLocalhost;
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bool mForceResolveOn;
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nsTHashtable<nsCStringHashKey> mLocalDomains;
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};
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#endif //nsDNSService2_h__
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