gecko-dev/dom/indexedDB/FileInfo.cpp

139 lines
3.6 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Indexed Database.
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "IndexedDatabaseManager.h"
#include "FileInfo.h"
USING_INDEXEDDB_NAMESPACE
// static
FileInfo*
FileInfo::Create(FileManager* aFileManager, PRInt64 aId)
{
NS_ASSERTION(aId > 0, "Wrong id!");
if (aId <= PR_INT16_MAX) {
return new FileInfo16(aFileManager, aId);
}
if (aId <= PR_INT32_MAX) {
return new FileInfo32(aFileManager, aId);
}
return new FileInfo64(aFileManager, aId);
}
void
FileInfo::GetReferences(PRInt32* aRefCnt, PRInt32* aDBRefCnt,
PRInt32* aSliceRefCnt)
{
if (IndexedDatabaseManager::IsClosed()) {
NS_ERROR("Shouldn't be called after shutdown!");
if (aRefCnt) {
*aRefCnt = -1;
}
if (aDBRefCnt) {
*aDBRefCnt = -1;
}
if (aSliceRefCnt) {
*aSliceRefCnt = -1;
}
return;
}
MutexAutoLock lock(IndexedDatabaseManager::FileMutex());
if (aRefCnt) {
*aRefCnt = mRefCnt;
}
if (aDBRefCnt) {
*aDBRefCnt = mDBRefCnt;
}
if (aSliceRefCnt) {
*aSliceRefCnt = mSliceRefCnt;
}
}
void
FileInfo::UpdateReferences(nsAutoRefCnt& aRefCount, PRInt32 aDelta,
bool aClear)
{
if (IndexedDatabaseManager::IsClosed()) {
NS_ERROR("Shouldn't be called after shutdown!");
return;
}
{
MutexAutoLock lock(IndexedDatabaseManager::FileMutex());
aRefCount = aClear ? 0 : aRefCount + aDelta;
if (mRefCnt + mDBRefCnt + mSliceRefCnt > 0) {
return;
}
mFileManager->mFileInfos.Remove(Id());
}
Cleanup();
delete this;
}
void
FileInfo::Cleanup()
{
if (IndexedDatabaseManager::IsShuttingDown() ||
mFileManager->Invalidated()) {
return;
}
nsRefPtr<IndexedDatabaseManager> mgr = IndexedDatabaseManager::Get();
NS_ASSERTION(mgr, "Shouldn't be null!");
if (NS_FAILED(mgr->AsyncDeleteFile(mFileManager, Id()))) {
NS_WARNING("Failed to delete file asynchronously!");
}
}