зеркало из https://github.com/mozilla/gecko-dev.git
126 строки
3.3 KiB
C++
126 строки
3.3 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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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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, int64_t 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(int32_t 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(int32_t aDelta)
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{
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UpdateReferences(mSliceRefCnt, aDelta);
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}
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void GetReferences(int32_t* aRefCnt, int32_t* aDBRefCnt,
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int32_t* 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 int64_t Id() const = 0;
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private:
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void UpdateReferences(nsAutoRefCnt& aRefCount, int32_t 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, int##_bits##_t aId) \
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: FileInfo(aFileManager), mId(aId) \
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{ } \
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\
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virtual int64_t 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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int##_bits##_t 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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