michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim: set ts=2 et sw=2 tw=80: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef mozilla_dom_indexeddb_fileinfo_h__
michael@0: #define mozilla_dom_indexeddb_fileinfo_h__
michael@0: 
michael@0: #include "IndexedDatabase.h"
michael@0: 
michael@0: #include "FileManager.h"
michael@0: #include "IndexedDatabaseManager.h"
michael@0: 
michael@0: BEGIN_INDEXEDDB_NAMESPACE
michael@0: 
michael@0: class FileInfo
michael@0: {
michael@0:   friend class FileManager;
michael@0: 
michael@0: public:
michael@0:   FileInfo(FileManager* aFileManager)
michael@0:   : mFileManager(aFileManager)
michael@0:   { }
michael@0: 
michael@0:   virtual ~FileInfo()
michael@0:   { }
michael@0: 
michael@0:   static
michael@0:   FileInfo* Create(FileManager* aFileManager, int64_t aId);
michael@0: 
michael@0:   void AddRef()
michael@0:   {
michael@0:     if (IndexedDatabaseManager::IsClosed()) {
michael@0:       ++mRefCnt;
michael@0:     }
michael@0:     else {
michael@0:       UpdateReferences(mRefCnt, 1);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   void Release()
michael@0:   {
michael@0:     if (IndexedDatabaseManager::IsClosed()) {
michael@0:       nsrefcnt count = --mRefCnt;
michael@0:       if (count == 0) {
michael@0:         mRefCnt = 1;
michael@0:         delete this;
michael@0:       }
michael@0:     }
michael@0:     else {
michael@0:       UpdateReferences(mRefCnt, -1);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   void UpdateDBRefs(int32_t aDelta)
michael@0:   {
michael@0:     UpdateReferences(mDBRefCnt, aDelta);
michael@0:   }
michael@0: 
michael@0:   void ClearDBRefs()
michael@0:   {
michael@0:     UpdateReferences(mDBRefCnt, 0, true);
michael@0:   }
michael@0: 
michael@0:   void UpdateSliceRefs(int32_t aDelta)
michael@0:   {
michael@0:     UpdateReferences(mSliceRefCnt, aDelta);
michael@0:   }
michael@0: 
michael@0:   void GetReferences(int32_t* aRefCnt, int32_t* aDBRefCnt,
michael@0:                      int32_t* aSliceRefCnt);
michael@0: 
michael@0:   FileManager* Manager() const
michael@0:   {
michael@0:     return mFileManager;
michael@0:   }
michael@0: 
michael@0:   virtual int64_t Id() const = 0;
michael@0: 
michael@0: private:
michael@0:   void UpdateReferences(ThreadSafeAutoRefCnt& aRefCount, int32_t aDelta,
michael@0:                         bool aClear = false);
michael@0:   void Cleanup();
michael@0: 
michael@0:   ThreadSafeAutoRefCnt mRefCnt;
michael@0:   ThreadSafeAutoRefCnt mDBRefCnt;
michael@0:   ThreadSafeAutoRefCnt mSliceRefCnt;
michael@0: 
michael@0:   nsRefPtr<FileManager> mFileManager;
michael@0: };
michael@0: 
michael@0: #define FILEINFO_SUBCLASS(_bits)                                              \
michael@0: class FileInfo##_bits : public FileInfo                                       \
michael@0: {                                                                             \
michael@0: public:                                                                       \
michael@0:   FileInfo##_bits(FileManager* aFileManager, int##_bits##_t aId)              \
michael@0:   : FileInfo(aFileManager), mId(aId)                                          \
michael@0:   { }                                                                         \
michael@0:                                                                               \
michael@0:   virtual int64_t Id() const                                                  \
michael@0:   {                                                                           \
michael@0:     return mId;                                                               \
michael@0:   }                                                                           \
michael@0:                                                                               \
michael@0: private:                                                                      \
michael@0:   int##_bits##_t mId;                                                         \
michael@0: };
michael@0: 
michael@0: FILEINFO_SUBCLASS(16)
michael@0: FILEINFO_SUBCLASS(32)
michael@0: FILEINFO_SUBCLASS(64)
michael@0: 
michael@0: #undef FILEINFO_SUBCLASS
michael@0: 
michael@0: END_INDEXEDDB_NAMESPACE
michael@0: 
michael@0: #endif // mozilla_dom_indexeddb_fileinfo_h__