зеркало из https://github.com/mozilla/gecko-dev.git
135 строки
4.9 KiB
C++
135 строки
4.9 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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#ifndef mozilla_dom_cache_QuotaClientImpl_h
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#define mozilla_dom_cache_QuotaClientImpl_h
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#include "mozilla/dom/QMResult.h"
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#include "mozilla/dom/cache/QuotaClient.h"
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#include "mozilla/dom/cache/FileUtils.h"
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#include "mozilla/dom/quota/ResultExtensions.h"
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namespace mozilla::dom::cache {
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class CacheQuotaClient final : public quota::Client {
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static CacheQuotaClient* sInstance;
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public:
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using OriginMetadata = quota::OriginMetadata;
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using PersistenceType = quota::PersistenceType;
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using UsageInfo = quota::UsageInfo;
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CacheQuotaClient();
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static CacheQuotaClient* Get();
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virtual Type GetType() override;
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virtual Result<UsageInfo, nsresult> InitOrigin(
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PersistenceType aPersistenceType, const OriginMetadata& aOriginMetadata,
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const AtomicBool& aCanceled) override;
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virtual nsresult InitOriginWithoutTracking(
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PersistenceType aPersistenceType, const OriginMetadata& aOriginMetadata,
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const AtomicBool& aCanceled) override;
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virtual Result<UsageInfo, nsresult> GetUsageForOrigin(
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PersistenceType aPersistenceType, const OriginMetadata& aOriginMetadata,
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const AtomicBool& aCanceled) override;
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virtual void OnOriginClearCompleted(PersistenceType aPersistenceType,
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const nsACString& aOrigin) override;
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virtual void ReleaseIOThreadObjects() override;
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void AbortOperationsForLocks(
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const DirectoryLockIdTable& aDirectoryLockIds) override;
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virtual void AbortOperationsForProcess(
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ContentParentId aContentParentId) override;
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virtual void AbortAllOperations() override;
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virtual void StartIdleMaintenance() override;
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virtual void StopIdleMaintenance() override;
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nsresult UpgradeStorageFrom2_0To2_1(nsIFile* aDirectory) override;
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template <typename Callable>
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nsresult MaybeUpdatePaddingFileInternal(nsIFile& aBaseDir,
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mozIStorageConnection& aConn,
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const int64_t aIncreaseSize,
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const int64_t aDecreaseSize,
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Callable&& aCommitHook) {
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MOZ_ASSERT(!NS_IsMainThread());
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MOZ_DIAGNOSTIC_ASSERT(aIncreaseSize >= 0);
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MOZ_DIAGNOSTIC_ASSERT(aDecreaseSize >= 0);
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// Temporary should be removed at the end of each action. If not, it means
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// the failure happened.
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const bool temporaryPaddingFileExist =
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DirectoryPaddingFileExists(aBaseDir, DirPaddingFile::TMP_FILE);
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if (aIncreaseSize == aDecreaseSize && !temporaryPaddingFileExist) {
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// Early return here, since most cache actions won't modify padding size.
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QM_TRY(MOZ_TO_RESULT(aCommitHook()));
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return NS_OK;
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}
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// Don't delete the temporary padding file in case of an error to force the
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// next action recalculate the padding size.
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QM_TRY(MOZ_TO_RESULT(
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UpdateDirectoryPaddingFile(aBaseDir, aConn, aIncreaseSize,
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aDecreaseSize, temporaryPaddingFileExist)));
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// Don't delete the temporary padding file in case of an error to force the
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// next action recalculate the padding size.
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QM_TRY(MOZ_TO_RESULT(aCommitHook()));
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QM_WARNONLY_TRY(MOZ_TO_RESULT(DirectoryPaddingFinalizeWrite(aBaseDir)),
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([&aBaseDir](const nsresult) {
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// Force restore file next time.
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QM_WARNONLY_TRY(QM_TO_RESULT(DirectoryPaddingDeleteFile(
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aBaseDir, DirPaddingFile::FILE)));
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// Ensure that we are able to force the padding file to
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// be restored.
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MOZ_ASSERT(DirectoryPaddingFileExists(
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aBaseDir, DirPaddingFile::TMP_FILE));
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// Since both the body file and header have been stored
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// in the file-system, just make the action be resolve
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// and let the padding file be restored in the next
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// action.
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}));
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return NS_OK;
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}
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nsresult RestorePaddingFileInternal(nsIFile* aBaseDir,
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mozIStorageConnection* aConn);
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nsresult WipePaddingFileInternal(
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const CacheDirectoryMetadata& aDirectoryMetadata, nsIFile* aBaseDir);
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private:
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~CacheQuotaClient();
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void InitiateShutdown() override;
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bool IsShutdownCompleted() const override;
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nsCString GetShutdownStatus() const override;
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void ForceKillActors() override;
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void FinalizeShutdown() override;
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(CacheQuotaClient, override)
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};
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} // namespace mozilla::dom::cache
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#endif // mozilla_dom_cache_QuotaClientImpl_h
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