зеркало из https://github.com/mozilla/gecko-dev.git
156 строки
4.8 KiB
C++
156 строки
4.8 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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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Indexed Database.
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*
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* The Initial Developer of the Original Code is
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* The Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2011
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef mozilla_dom_indexeddb_fileinfo_h__
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#define mozilla_dom_indexeddb_fileinfo_h__
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#include "IndexedDatabase.h"
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#include "nsAtomicRefcnt.h"
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#include "nsThreadUtils.h"
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#include "FileManager.h"
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#include "IndexedDatabaseManager.h"
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BEGIN_INDEXEDDB_NAMESPACE
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class FileInfo
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{
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friend class FileManager;
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public:
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FileInfo(FileManager* aFileManager)
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: mFileManager(aFileManager)
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{ }
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virtual ~FileInfo()
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{
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#ifdef DEBUG
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NS_ASSERTION(NS_IsMainThread(), "File info destroyed on wrong thread!");
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#endif
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}
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static
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FileInfo* Create(FileManager* aFileManager, PRInt64 aId);
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void AddRef()
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{
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if (IndexedDatabaseManager::IsClosed()) {
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NS_AtomicIncrementRefcnt(mRefCnt);
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}
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else {
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UpdateReferences(mRefCnt, 1);
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}
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}
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void Release()
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{
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if (IndexedDatabaseManager::IsClosed()) {
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nsrefcnt count = NS_AtomicDecrementRefcnt(mRefCnt);
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if (count == 0) {
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mRefCnt = 1;
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delete this;
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}
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}
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else {
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UpdateReferences(mRefCnt, -1);
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}
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}
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void UpdateDBRefs(PRInt32 aDelta)
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{
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UpdateReferences(mDBRefCnt, aDelta);
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}
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void ClearDBRefs()
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{
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UpdateReferences(mDBRefCnt, 0, true);
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}
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void UpdateSliceRefs(PRInt32 aDelta)
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{
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UpdateReferences(mSliceRefCnt, aDelta);
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}
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void GetReferences(PRInt32* aRefCnt, PRInt32* aDBRefCnt,
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PRInt32* aSliceRefCnt);
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FileManager* Manager() const
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{
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return mFileManager;
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}
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virtual PRInt64 Id() const = 0;
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private:
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void UpdateReferences(nsAutoRefCnt& aRefCount, PRInt32 aDelta,
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bool aClear = false);
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void Cleanup();
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nsAutoRefCnt mRefCnt;
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nsAutoRefCnt mDBRefCnt;
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nsAutoRefCnt mSliceRefCnt;
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nsRefPtr<FileManager> mFileManager;
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};
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#define FILEINFO_SUBCLASS(_bits) \
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class FileInfo##_bits : public FileInfo \
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{ \
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public: \
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FileInfo##_bits(FileManager* aFileManager, PRInt##_bits aId) \
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: FileInfo(aFileManager), mId(aId) \
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{ } \
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\
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virtual PRInt64 Id() const \
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{ \
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return mId; \
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} \
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\
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private: \
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PRInt##_bits mId; \
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};
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FILEINFO_SUBCLASS(16)
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FILEINFO_SUBCLASS(32)
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FILEINFO_SUBCLASS(64)
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#undef FILEINFO_SUBCLASS
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END_INDEXEDDB_NAMESPACE
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#endif // mozilla_dom_indexeddb_fileinfo_h__
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