/****************************************************************************
**
** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (developer.feedback@nokia.com)
**
** This file is part of the HbCore module of the UI Extensions for Mobile.
**
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at developer.feedback@nokia.com.
**
****************************************************************************/
#include "hbsharedmemorymanagerut_p.h"
#include <QSharedMemory>
#include <QString>
#include <QDebug>
#include "hbthemecommon_p.h"
#include "hbsharedcache_p.h"
#define HB_THEME_SHARED_AUTOTEST_CHUNK "hbthemesharedautotest"
HbSharedMemoryManagerUt * HbSharedMemoryManagerUt::memManager = 0;
/**
* initialize
*/
bool HbSharedMemoryManagerUt::initialize()
{
bool success = false;
if ( !chunk ) {
chunk = new HbSharedMemoryWrapper(HB_THEME_SHARED_AUTOTEST_CHUNK);
success = chunk->create( CACHE_SIZE, QSharedMemory::ReadWrite );
// If SharedMemory Already Exists.
// (This can happpen if ThemeServer crashed without releasing QSharedMemory)
if ( !success && QSharedMemory::AlreadyExists == chunk->error() ) {
success = chunk->attach( QSharedMemory::ReadWrite );
}
writable = true;
if ( !success ) {
#ifdef THEME_SERVER_TRACES
qDebug() << "HbSharedMemoryManager:: Could not initialize shared memory chunk";
#endif //THEME_SERVER_TRACES
delete chunk;
chunk = 0;
}
}
if (success) {
// if we are recovering from theme server crash, shared chunk may
// already be ready
bool enableRecovery = false;
HbSharedChunkHeader *chunkHeader = (HbSharedChunkHeader*)(chunk->data());
if (enableRecovery && chunkHeader->identifier == INITIALIZED_CHUNK_IDENTIFIER) {
// just reconnect allocators to the shared chunk
mainAllocator->initialize(chunk, chunkHeader->mainAllocatorOffset);
subAllocator->initialize(chunk, chunkHeader->subAllocatorOffset, mainAllocator);
} else {
chunkHeader->mainAllocatorOffset = sizeof(HbSharedChunkHeader);
// Clear also allocator identifier so that they will not try to re-connect
qptrdiff *mainAllocatorIdentifier = reinterpret_cast<qptrdiff *>(static_cast<char *>(base()) + chunkHeader->mainAllocatorOffset);
*mainAllocatorIdentifier = 0;
mainAllocator->initialize(chunk, chunkHeader->mainAllocatorOffset);
chunkHeader->subAllocatorOffset = alloc(SPACE_NEEDED_FOR_MULTISEGMENT_ALLOCATOR);
qptrdiff *subAllocatorIdentifier = reinterpret_cast<qptrdiff *>(static_cast<char *>(base()) + chunkHeader->subAllocatorOffset);
*subAllocatorIdentifier = 0;
subAllocator->initialize(chunk, chunkHeader->subAllocatorOffset, mainAllocator);
chunkHeader->identifier = INITIALIZED_CHUNK_IDENTIFIER;
// Create empty shared cache for unit test purposes
HbSharedCache *cachePtr = createSharedCache(0, 0, 0, -1);
if (cachePtr) {
const QString &appName = HbMemoryUtils::getCleanAppName();
if (appName == THEME_SERVER_NAME) {
cachePtr->initServer();
} else {
cachePtr->initClient();
}
}
}
success = true;
}
return success;
}
/**
* c'tor
*/
HbSharedMemoryManagerUt::HbSharedMemoryManagerUt()
{
}
/**
* d'tor
*/
HbSharedMemoryManagerUt::~HbSharedMemoryManagerUt()
{
}
/**
* to change access right..
*/
void HbSharedMemoryManagerUt::setWritable( bool readWrite )
{
writable = readWrite;
}
/**
* to get instance of HbSharedMemoryManagerUt
*/
HbMemoryManager * HbSharedMemoryManagerUt::instance()
{
if( !memManager ){
memManager = new HbSharedMemoryManagerUt();
if( !memManager->initialize() ) {
qWarning( "HbSharedMemoryManager:Could not initialize shared memory" );
delete memManager;
memManager = 0;
}
}
return memManager;
}
/**
* to release instance of HbSharedMemoryManagerUt
*/
void HbSharedMemoryManagerUt::releaseInstance()
{
delete memManager;
memManager = 0;
}