зеркало из https://github.com/mozilla/gecko-dev.git
140 строки
4.0 KiB
C++
140 строки
4.0 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_FileUtils_h
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#define mozilla_dom_cache_FileUtils_h
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#include "mozilla/Attributes.h"
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#include "mozilla/dom/cache/Types.h"
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#include "mozIStorageConnection.h"
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#include "nsStreamUtils.h"
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#include "nsTArrayForwardDeclare.h"
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struct nsID;
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class nsIFile;
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namespace mozilla {
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namespace dom {
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namespace cache {
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#define PADDING_FILE_NAME ".padding"
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#define PADDING_TMP_FILE_NAME ".padding-tmp"
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enum DirPaddingFile
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{
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FILE,
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TMP_FILE
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};
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nsresult
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BodyCreateDir(nsIFile* aBaseDir);
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// Note that this function can only be used during the initialization of the
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// database. We're unlikely to be able to delete the DB successfully past
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// that point due to the file being in use.
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nsresult
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BodyDeleteDir(const QuotaInfo& aQuotaInfo, nsIFile* aBaseDir);
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nsresult
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BodyGetCacheDir(nsIFile* aBaseDir, const nsID& aId, nsIFile** aCacheDirOut);
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nsresult
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BodyStartWriteStream(const QuotaInfo& aQuotaInfo, nsIFile* aBaseDir,
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nsIInputStream* aSource, void* aClosure,
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nsAsyncCopyCallbackFun aCallback, nsID* aIdOut,
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nsISupports** aCopyContextOut);
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void
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BodyCancelWrite(nsIFile* aBaseDir, nsISupports* aCopyContext);
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nsresult
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BodyFinalizeWrite(nsIFile* aBaseDir, const nsID& aId);
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nsresult
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BodyOpen(const QuotaInfo& aQuotaInfo, nsIFile* aBaseDir, const nsID& aId,
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nsIInputStream** aStreamOut);
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nsresult
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BodyMaybeUpdatePaddingSize(const QuotaInfo& aQuotaInfo, nsIFile* aBaseDir,
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const nsID& aId, const uint32_t aPaddingInfo,
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int64_t* aPaddingSizeOut);
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nsresult
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BodyDeleteFiles(const QuotaInfo& aQuotaInfo, nsIFile* aBaseDir,
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const nsTArray<nsID>& aIdList);
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nsresult
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BodyDeleteOrphanedFiles(const QuotaInfo& aQuotaInfo, nsIFile* aBaseDir,
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nsTArray<nsID>& aKnownBodyIdList);
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nsresult
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CreateMarkerFile(const QuotaInfo& aQuotaInfo);
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nsresult
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DeleteMarkerFile(const QuotaInfo& aQuotaInfo);
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bool
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MarkerFileExists(const QuotaInfo& aQuotaInfo);
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nsresult
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RemoveNsIFileRecursively(const QuotaInfo& aQuotaInfo, nsIFile* aFile);
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nsresult
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RemoveNsIFile(const QuotaInfo& aQuotaInfo, nsIFile* aFile);
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void
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DecreaseUsageForQuotaInfo(const QuotaInfo& aQuotaInfo,
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const int64_t& aUpdatingSize);
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/**
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* This function is used to check if the directory padding file is existed.
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*/
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bool
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DirectoryPaddingFileExists(nsIFile* aBaseDir, DirPaddingFile aPaddingFileType);
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/**
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*
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* The functions below are used to read/write/delete the directory padding file
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* after acquiring the mutex lock. The mutex lock is held by
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* CacheQuotaClient to prevent multi-thread accessing issue. To avoid deadlock,
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* these functions should only access by static functions in
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* dom/cache/QuotaClient.cpp.
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*
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*/
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nsresult
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LockedDirectoryPaddingGet(nsIFile* aBaseDir, int64_t* aPaddingSizeOut);
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nsresult
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LockedDirectoryPaddingInit(nsIFile* aBaseDir);
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nsresult
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LockedUpdateDirectoryPaddingFile(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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const bool aTemporaryFileExist);
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nsresult
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LockedDirectoryPaddingTemporaryWrite(nsIFile* aBaseDir, int64_t aPaddingSize);
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nsresult
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LockedDirectoryPaddingFinalizeWrite(nsIFile* aBaseDir);
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nsresult
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LockedDirectoryPaddingRestore(nsIFile* aBaseDir, mozIStorageConnection* aConn,
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bool aMustRestore, int64_t* aPaddingSizeOut);
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nsresult
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LockedDirectoryPaddingDeleteFile(nsIFile* aBaseDir,
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DirPaddingFile aPaddingFileType);
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} // namespace cache
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_cache_FileUtils_h
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