1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/indexedDB/FileInfo.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,118 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* vim: set ts=2 et sw=2 tw=80: */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#ifndef mozilla_dom_indexeddb_fileinfo_h__
1.11 +#define mozilla_dom_indexeddb_fileinfo_h__
1.12 +
1.13 +#include "IndexedDatabase.h"
1.14 +
1.15 +#include "FileManager.h"
1.16 +#include "IndexedDatabaseManager.h"
1.17 +
1.18 +BEGIN_INDEXEDDB_NAMESPACE
1.19 +
1.20 +class FileInfo
1.21 +{
1.22 + friend class FileManager;
1.23 +
1.24 +public:
1.25 + FileInfo(FileManager* aFileManager)
1.26 + : mFileManager(aFileManager)
1.27 + { }
1.28 +
1.29 + virtual ~FileInfo()
1.30 + { }
1.31 +
1.32 + static
1.33 + FileInfo* Create(FileManager* aFileManager, int64_t aId);
1.34 +
1.35 + void AddRef()
1.36 + {
1.37 + if (IndexedDatabaseManager::IsClosed()) {
1.38 + ++mRefCnt;
1.39 + }
1.40 + else {
1.41 + UpdateReferences(mRefCnt, 1);
1.42 + }
1.43 + }
1.44 +
1.45 + void Release()
1.46 + {
1.47 + if (IndexedDatabaseManager::IsClosed()) {
1.48 + nsrefcnt count = --mRefCnt;
1.49 + if (count == 0) {
1.50 + mRefCnt = 1;
1.51 + delete this;
1.52 + }
1.53 + }
1.54 + else {
1.55 + UpdateReferences(mRefCnt, -1);
1.56 + }
1.57 + }
1.58 +
1.59 + void UpdateDBRefs(int32_t aDelta)
1.60 + {
1.61 + UpdateReferences(mDBRefCnt, aDelta);
1.62 + }
1.63 +
1.64 + void ClearDBRefs()
1.65 + {
1.66 + UpdateReferences(mDBRefCnt, 0, true);
1.67 + }
1.68 +
1.69 + void UpdateSliceRefs(int32_t aDelta)
1.70 + {
1.71 + UpdateReferences(mSliceRefCnt, aDelta);
1.72 + }
1.73 +
1.74 + void GetReferences(int32_t* aRefCnt, int32_t* aDBRefCnt,
1.75 + int32_t* aSliceRefCnt);
1.76 +
1.77 + FileManager* Manager() const
1.78 + {
1.79 + return mFileManager;
1.80 + }
1.81 +
1.82 + virtual int64_t Id() const = 0;
1.83 +
1.84 +private:
1.85 + void UpdateReferences(ThreadSafeAutoRefCnt& aRefCount, int32_t aDelta,
1.86 + bool aClear = false);
1.87 + void Cleanup();
1.88 +
1.89 + ThreadSafeAutoRefCnt mRefCnt;
1.90 + ThreadSafeAutoRefCnt mDBRefCnt;
1.91 + ThreadSafeAutoRefCnt mSliceRefCnt;
1.92 +
1.93 + nsRefPtr<FileManager> mFileManager;
1.94 +};
1.95 +
1.96 +#define FILEINFO_SUBCLASS(_bits) \
1.97 +class FileInfo##_bits : public FileInfo \
1.98 +{ \
1.99 +public: \
1.100 + FileInfo##_bits(FileManager* aFileManager, int##_bits##_t aId) \
1.101 + : FileInfo(aFileManager), mId(aId) \
1.102 + { } \
1.103 + \
1.104 + virtual int64_t Id() const \
1.105 + { \
1.106 + return mId; \
1.107 + } \
1.108 + \
1.109 +private: \
1.110 + int##_bits##_t mId; \
1.111 +};
1.112 +
1.113 +FILEINFO_SUBCLASS(16)
1.114 +FILEINFO_SUBCLASS(32)
1.115 +FILEINFO_SUBCLASS(64)
1.116 +
1.117 +#undef FILEINFO_SUBCLASS
1.118 +
1.119 +END_INDEXEDDB_NAMESPACE
1.120 +
1.121 +#endif // mozilla_dom_indexeddb_fileinfo_h__
