author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 17 Sep 2010 08:32:10 +0300 | |
changeset 28 | b7da29130b0e |
parent 23 | e6ad4ef83b23 |
permissions | -rw-r--r-- |
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/**************************************************************************** |
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** |
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** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies). |
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** All rights reserved. |
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** Contact: Nokia Corporation (developer.feedback@nokia.com) |
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** |
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** This file is part of the HbCore module of the UI Extensions for Mobile. |
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** |
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** GNU Lesser General Public License Usage |
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** This file may be used under the terms of the GNU Lesser General Public |
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** License version 2.1 as published by the Free Software Foundation and |
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** appearing in the file LICENSE.LGPL included in the packaging of this file. |
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** Please review the following information to ensure the GNU Lesser General |
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** Public License version 2.1 requirements will be met: |
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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** |
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** In addition, as a special exception, Nokia gives you certain additional |
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** rights. These rights are described in the Nokia Qt LGPL Exception |
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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** |
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** If you have questions regarding the use of this file, please contact |
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** Nokia at developer.feedback@nokia.com. |
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** |
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****************************************************************************/ |
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|
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#include "hbsharedmemorymanagerut_p.h" |
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#include <QSharedMemory> |
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#include <QString> |
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#include <QDebug> |
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#include "hbthemecommon_p.h" |
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#include "hbsharedcache_p.h" |
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#define HB_THEME_SHARED_AUTOTEST_CHUNK "hbthemesharedautotest" |
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HbSharedMemoryManagerUt * HbSharedMemoryManagerUt::memManager = 0; |
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/** |
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* initialize |
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*/ |
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bool HbSharedMemoryManagerUt::initialize() |
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{ |
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bool success = false; |
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if ( !chunk ) { |
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chunk = new HbSharedMemoryWrapper(HB_THEME_SHARED_AUTOTEST_CHUNK); |
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success = chunk->create( CACHE_SIZE, QSharedMemory::ReadWrite ); |
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// If SharedMemory Already Exists. |
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// (This can happpen if ThemeServer crashed without releasing QSharedMemory) |
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if ( !success && QSharedMemory::AlreadyExists == chunk->error() ) { |
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success = chunk->attach( QSharedMemory::ReadWrite ); |
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} |
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writable = true; |
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if ( !success ) { |
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THEME_GENERIC_DEBUG() << "HbSharedMemoryManager:: Could not initialize shared memory chunk"; |
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delete chunk; |
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chunk = 0; |
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} |
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} |
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|
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if (success) { |
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// if we are recovering from theme server crash, shared chunk may |
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// already be ready |
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bool enableRecovery = false; |
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HbSharedChunkHeader *chunkHeader = (HbSharedChunkHeader*)(chunk->data()); |
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if (enableRecovery && chunkHeader->identifier == INITIALIZED_CHUNK_IDENTIFIER) { |
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// just reconnect allocators to the shared chunk |
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mainAllocator->initialize(chunk, chunkHeader->mainAllocatorOffset); |
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subAllocator->initialize(chunk, chunkHeader->subAllocatorOffset, mainAllocator); |
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} else { |
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memset(chunkHeader, 0, sizeof(HbSharedChunkHeader)); |
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chunkHeader->mainAllocatorOffset = sizeof(HbSharedChunkHeader); |
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// Clear also allocator identifier so that they will not try to re-connect |
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quint32 *mainAllocatorIdentifier = reinterpret_cast<quint32 *>(static_cast<char *>(base()) + chunkHeader->mainAllocatorOffset); |
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*mainAllocatorIdentifier = 0; |
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mainAllocator->initialize(chunk, chunkHeader->mainAllocatorOffset); |
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chunkHeader->subAllocatorOffset = alloc(SPACE_NEEDED_FOR_MULTISEGMENT_ALLOCATOR); |
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quint32 *subAllocatorIdentifier = reinterpret_cast<quint32 *>(static_cast<char *>(base()) + chunkHeader->subAllocatorOffset); |
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*subAllocatorIdentifier = 0; |
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subAllocator->initialize(chunk, chunkHeader->subAllocatorOffset, mainAllocator); |
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chunkHeader->identifier = INITIALIZED_CHUNK_IDENTIFIER; |
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// Create empty shared cache for unit test purposes |
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HbSharedCache *cachePtr = createSharedCache(0, 0, 0, -1); |
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if (cachePtr) { |
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const QString &appName = HbMemoryUtils::getCleanAppName(); |
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if (appName == THEME_SERVER_NAME) { |
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cachePtr->initServer(); |
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} else { |
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cachePtr->initClient(); |
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} |
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} |
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} |
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success = true; |
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} |
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return success; |
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} |
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/** |
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* c'tor |
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*/ |
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HbSharedMemoryManagerUt::HbSharedMemoryManagerUt() |
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{ |
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} |
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/** |
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* d'tor |
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*/ |
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HbSharedMemoryManagerUt::~HbSharedMemoryManagerUt() |
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{ |
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} |
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/** |
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* to change access right.. |
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*/ |
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void HbSharedMemoryManagerUt::setWritable( bool readWrite ) |
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{ |
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writable = readWrite; |
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} |
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/** |
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* to get instance of HbSharedMemoryManagerUt |
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*/ |
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HbMemoryManager * HbSharedMemoryManagerUt::instance() |
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{ |
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if( !memManager ){ |
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memManager = new HbSharedMemoryManagerUt(); |
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if( !memManager->initialize() ) { |
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hbWarning( "HbSharedMemoryManager:Could not initialize shared memory" ); |
0
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delete memManager; |
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memManager = 0; |
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} |
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} |
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return memManager; |
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} |
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/** |
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* to release instance of HbSharedMemoryManagerUt |
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*/ |
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void HbSharedMemoryManagerUt::releaseInstance() |
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{ |
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delete memManager; |
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memManager = 0; |
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} |
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