зеркало из https://github.com/mozilla/gecko-dev.git
362 строки
9.8 KiB
C++
362 строки
9.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=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_quotamanager_h__
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#define mozilla_dom_quota_quotamanager_h__
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#include "QuotaCommon.h"
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#include "nsIObserver.h"
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#include "nsIQuotaManager.h"
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#include "mozilla/Mutex.h"
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#include "nsClassHashtable.h"
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#include "nsRefPtrHashtable.h"
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#include "nsThreadUtils.h"
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#include "ArrayCluster.h"
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#include "Client.h"
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#include "StoragePrivilege.h"
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#define QUOTA_MANAGER_CONTRACTID "@mozilla.org/dom/quota/manager;1"
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class nsIAtom;
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class nsIOfflineStorage;
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class nsIPrincipal;
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class nsIThread;
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class nsITimer;
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class nsIURI;
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class nsPIDOMWindow;
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BEGIN_QUOTA_NAMESPACE
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class AcquireListener;
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class AsyncUsageRunnable;
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class CheckQuotaHelper;
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class OriginClearRunnable;
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class OriginInfo;
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class OriginOrPatternString;
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class QuotaObject;
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struct SynchronizedOp;
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class QuotaManager MOZ_FINAL : public nsIQuotaManager,
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public nsIObserver
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{
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friend class AsyncUsageRunnable;
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friend class OriginClearRunnable;
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friend class OriginInfo;
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friend class QuotaObject;
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enum MozBrowserPatternFlag
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{
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MozBrowser = 0,
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NotMozBrowser,
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IgnoreMozBrowser
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};
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typedef void
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(*WaitingOnStoragesCallback)(nsTArray<nsCOMPtr<nsIOfflineStorage> >&, void*);
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIQUOTAMANAGER
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NS_DECL_NSIOBSERVER
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// Returns a non-owning reference.
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static QuotaManager*
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GetOrCreate();
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// Returns a non-owning reference.
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static QuotaManager*
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Get();
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// Returns an owning reference! No one should call this but the factory.
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static QuotaManager*
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FactoryCreate();
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// Returns true if we've begun the shutdown process.
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static bool IsShuttingDown();
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void
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InitQuotaForOrigin(const nsACString& aOrigin,
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int64_t aLimitBytes,
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int64_t aUsageBytes);
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void
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DecreaseUsageForOrigin(const nsACString& aOrigin,
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int64_t aSize);
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void
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RemoveQuotaForPattern(const nsACString& aPattern);
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already_AddRefed<QuotaObject>
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GetQuotaObject(const nsACString& aOrigin,
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nsIFile* aFile);
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already_AddRefed<QuotaObject>
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GetQuotaObject(const nsACString& aOrigin,
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const nsAString& aPath);
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// Set the Window that the current thread is doing operations for.
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// The caller is responsible for ensuring that aWindow is held alive.
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static void
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SetCurrentWindow(nsPIDOMWindow* aWindow)
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{
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QuotaManager* quotaManager = Get();
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NS_ASSERTION(quotaManager, "Must have a manager here!");
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quotaManager->SetCurrentWindowInternal(aWindow);
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}
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static void
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CancelPromptsForWindow(nsPIDOMWindow* aWindow)
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{
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NS_ASSERTION(aWindow, "Passed null window!");
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QuotaManager* quotaManager = Get();
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NS_ASSERTION(quotaManager, "Must have a manager here!");
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quotaManager->CancelPromptsForWindowInternal(aWindow);
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}
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// Called when a storage is created.
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bool
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RegisterStorage(nsIOfflineStorage* aStorage);
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// Called when a storage is being unlinked or destroyed.
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void
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UnregisterStorage(nsIOfflineStorage* aStorage);
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// Called when a storage has been closed.
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void
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OnStorageClosed(nsIOfflineStorage* aStorage);
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// Called when a window is being purged from the bfcache or the user leaves
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// a page which isn't going into the bfcache. Forces any live storage
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// objects to close themselves and aborts any running transactions.
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void
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AbortCloseStoragesForWindow(nsPIDOMWindow* aWindow);
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// Used to check if there are running transactions in a given window.
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bool
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HasOpenTransactions(nsPIDOMWindow* aWindow);
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// Waits for storages to be cleared and for version change transactions to
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// complete before dispatching the given runnable.
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nsresult
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WaitForOpenAllowed(const OriginOrPatternString& aOriginOrPattern,
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nsIAtom* aId,
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nsIRunnable* aRunnable);
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// Acquire exclusive access to the storage given (waits for all others to
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// close). If storages need to close first, the callback will be invoked
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// with an array of said storages.
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nsresult
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AcquireExclusiveAccess(nsIOfflineStorage* aStorage,
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const nsACString& aOrigin,
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AcquireListener* aListener,
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WaitingOnStoragesCallback aCallback,
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void* aClosure)
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{
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NS_ASSERTION(aStorage, "Need a storage here!");
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return AcquireExclusiveAccess(aOrigin, aStorage, aListener, aCallback,
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aClosure);
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}
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nsresult
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AcquireExclusiveAccess(const nsACString& aOrigin,
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AcquireListener* aListener,
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WaitingOnStoragesCallback aCallback,
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void* aClosure)
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{
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return AcquireExclusiveAccess(aOrigin, nullptr, aListener, aCallback,
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aClosure);
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}
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void
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AllowNextSynchronizedOp(const OriginOrPatternString& aOriginOrPattern,
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nsIAtom* aId);
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bool
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IsClearOriginPending(const nsACString& aPattern)
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{
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return !!FindSynchronizedOp(aPattern, nullptr);
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}
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nsresult
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GetDirectoryForOrigin(const nsACString& aASCIIOrigin,
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nsIFile** aDirectory) const;
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nsresult
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EnsureOriginIsInitialized(const nsACString& aOrigin,
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bool aTrackQuota,
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nsIFile** aDirectory);
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void
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OriginClearCompleted(const nsACString& aPattern);
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nsIThread*
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IOThread()
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{
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NS_ASSERTION(mIOThread, "This should never be null!");
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return mIOThread;
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}
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already_AddRefed<Client>
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GetClient(Client::Type aClientType);
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const nsString&
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GetBaseDirectory() const
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{
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return mStorageBasePath;
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}
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static uint32_t
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GetStorageQuotaMB();
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static already_AddRefed<nsIAtom>
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GetStorageId(const nsACString& aOrigin,
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const nsAString& aName);
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static nsresult
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GetASCIIOriginFromURI(nsIURI* aURI,
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uint32_t aAppId,
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bool aInMozBrowser,
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nsACString& aASCIIOrigin);
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static nsresult
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GetASCIIOriginFromPrincipal(nsIPrincipal* aPrincipal,
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nsACString& aASCIIOrigin);
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static nsresult
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GetASCIIOriginFromWindow(nsPIDOMWindow* aWindow,
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nsACString& aASCIIOrigin);
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static void
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GetOriginPatternString(uint32_t aAppId, bool aBrowserOnly,
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const nsACString& aOrigin, nsAutoCString& _retval)
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{
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return GetOriginPatternString(aAppId,
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aBrowserOnly ? MozBrowser : NotMozBrowser,
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aOrigin, _retval);
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}
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static void
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GetOriginPatternStringMaybeIgnoreBrowser(uint32_t aAppId, bool aBrowserOnly,
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nsAutoCString& _retval)
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{
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return GetOriginPatternString(aAppId,
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aBrowserOnly ? MozBrowser : IgnoreMozBrowser,
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EmptyCString(), _retval);
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}
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private:
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QuotaManager();
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virtual ~QuotaManager();
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nsresult
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Init();
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void
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SetCurrentWindowInternal(nsPIDOMWindow* aWindow);
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void
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CancelPromptsForWindowInternal(nsPIDOMWindow* aWindow);
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// Determine if the quota is lifted for the Window the current thread is
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// using.
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bool
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LockedQuotaIsLifted();
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nsresult
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AcquireExclusiveAccess(const nsACString& aOrigin,
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nsIOfflineStorage* aStorage,
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AcquireListener* aListener,
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WaitingOnStoragesCallback aCallback,
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void* aClosure);
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nsresult
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RunSynchronizedOp(nsIOfflineStorage* aStorage,
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SynchronizedOp* aOp);
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SynchronizedOp*
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FindSynchronizedOp(const nsACString& aPattern,
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nsISupports* aId);
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nsresult
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ClearStoragesForApp(uint32_t aAppId, bool aBrowserOnly);
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nsresult
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MaybeUpgradeOriginDirectory(nsIFile* aDirectory);
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void
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ReleaseIOThreadObjects()
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{
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AssertIsOnIOThread();
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for (uint32_t index = 0; index < Client::TYPE_MAX; index++) {
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mClients[index]->ReleaseIOThreadObjects();
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}
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}
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static void
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GetOriginPatternString(uint32_t aAppId,
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MozBrowserPatternFlag aBrowserFlag,
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const nsACString& aOrigin,
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nsAutoCString& _retval);
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// TLS storage index for the current thread's window.
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unsigned int mCurrentWindowIndex;
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mozilla::Mutex mQuotaMutex;
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nsRefPtrHashtable<nsCStringHashKey, OriginInfo> mOriginInfos;
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// A map of Windows to the corresponding quota helper.
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nsRefPtrHashtable<nsPtrHashKey<nsPIDOMWindow>,
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CheckQuotaHelper> mCheckQuotaHelpers;
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// Maintains a list of live storages per origin.
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nsClassHashtable<nsCStringHashKey,
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ArrayCluster<nsIOfflineStorage*> > mLiveStorages;
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// Maintains a list of synchronized operatons that are in progress or queued.
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nsAutoTArray<nsAutoPtr<SynchronizedOp>, 5> mSynchronizedOps;
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// Thread on which IO is performed.
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nsCOMPtr<nsIThread> mIOThread;
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// A timer that gets activated at shutdown to ensure we close all storages.
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nsCOMPtr<nsITimer> mShutdownTimer;
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// A list of all successfully initialized origins. This list isn't protected
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// by any mutex but it is only ever touched on the IO thread.
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nsTArray<nsCString> mInitializedOrigins;
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nsAutoTArray<nsRefPtr<Client>, Client::TYPE_MAX> mClients;
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nsString mStorageBasePath;
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};
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class AutoEnterWindow
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{
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public:
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AutoEnterWindow(nsPIDOMWindow* aWindow)
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{
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QuotaManager::SetCurrentWindow(aWindow);
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}
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~AutoEnterWindow()
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{
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QuotaManager::SetCurrentWindow(nullptr);
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}
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};
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END_QUOTA_NAMESPACE
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#endif /* mozilla_dom_quota_quotamanager_h__ */
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