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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_indexeddb_fileinfo_h__
#define mozilla_dom_indexeddb_fileinfo_h__
#include "nsISupportsImpl.h"
namespace mozilla {
namespace dom {
namespace indexedDB {
class FileManager;
class FileInfo
{
friend class FileManager;
ThreadSafeAutoRefCnt mRefCnt;
ThreadSafeAutoRefCnt mDBRefCnt;
ThreadSafeAutoRefCnt mSliceRefCnt;
RefPtr<FileManager> mFileManager;
public:
class CustomCleanupCallback;
static
FileInfo* Create(FileManager* aFileManager, int64_t aId);
explicit FileInfo(FileManager* aFileManager);
void
AddRef()
{
UpdateReferences(mRefCnt, 1);
}
void
Release(CustomCleanupCallback* aCustomCleanupCallback = nullptr)
{
UpdateReferences(mRefCnt, -1, aCustomCleanupCallback);
}
void
UpdateDBRefs(int32_t aDelta)
{
UpdateReferences(mDBRefCnt, aDelta);
}
void
UpdateSliceRefs(int32_t aDelta)
{
UpdateReferences(mSliceRefCnt, aDelta);
}
void
GetReferences(int32_t* aRefCnt, int32_t* aDBRefCnt, int32_t* aSliceRefCnt);
FileManager*
Manager() const
{
return mFileManager;
}
virtual int64_t
Id() const = 0;
protected:
virtual ~FileInfo();
private:
void
UpdateReferences(ThreadSafeAutoRefCnt& aRefCount,
int32_t aDelta,
CustomCleanupCallback* aCustomCleanupCallback = nullptr);
bool
LockedClearDBRefs();
void
Cleanup();
};
class NS_NO_VTABLE FileInfo::CustomCleanupCallback
{
public:
virtual nsresult
Cleanup(FileManager* aFileManager, int64_t aId) = 0;
protected:
CustomCleanupCallback()
{ }
};
} // namespace indexedDB
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_indexeddb_fileinfo_h__
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